Coil fixing structure, coil fixing method and electronic equipment

Abstract

This application discloses a coil fixing structure, coil fixing method, and electronic device. The coil fixing structure may include a mounting bracket, a coil, and a filler. The mounting bracket includes a first accommodating cavity. The coil is used to transmit energy and / or information and has an arcuate surface. The coil is accommodated in the first accommodating cavity. The filler is at least partially disposed within the first accommodating cavity to fill the gap between the inner wall of the first accommodating cavity and the coil. The coil in this application can efficiently and stably transmit energy and / or information.

Description

Technical Field

[0001] The present application belongs to the field of electronic technology, and in particular relates to a coil fixing structure, a fixing method and an electronic device. Background Art

[0002] With the development of electronic technology, electronic devices are often equipped with coils for transmitting energy and / or information. For example, in related art, electronic devices can be equipped with planar coils for wireless charging. Planar coils are flat, thin, sheet-shaped inductor coils. However, given the limited length, width, and height of the electronic device itself, the coupling area between the planar coil and the corresponding coils of other devices is limited, limiting the charging efficiency of the electronic device.

[0003] Therefore, the existing technology needs to be improved and enhanced. Summary of the Invention

[0004] Embodiments of the present application provide a coil fixing structure, a coil fixing method, and an electronic device, which can improve the transmission efficiency of the coil.

[0005] In a first aspect, an embodiment of the present application provides a coil fixing structure, comprising:

[0006] A mounting bracket, the mounting bracket comprising a first accommodating cavity;

[0007] a coil, the coil being used to transmit energy and / or information, the coil being in an arc shape, and the coil being at least partially accommodated in the first accommodating cavity; and

[0008] A filling piece is at least partially disposed in the first accommodating cavity to fill a gap between an inner wall of the first accommodating cavity and the coil.

[0009] Optionally, the coil fixing structure further includes a magnetic isolation sheet, the magnetic isolation sheet being bonded to a side of the coil facing away from the opening of the first accommodating cavity, the magnetic isolation sheet being bonded and fixed to the mounting bracket, and the magnetic isolation sheet including a first portion located on an inner circumference side of the coil and a second portion located on an outer circumference side of the coil;

[0010] The filler includes a first main body portion and a second main body portion. The first main body portion is located on the inner circumference side of the coil and covers the first portion. The second main body portion is located on the outer circumference side of the coil and covers the second portion.

[0011] Optionally, the first portion is provided with a first positioning hole;

[0012] The mounting bracket is provided with a second positioning hole, and the second positioning hole is communicated with the first positioning hole;

[0013] The filling piece includes a first extension portion, and the first extension portion is passed through the first positioning hole and the second positioning hole.

[0014] Optionally, the magnetic isolation plate is provided with a wiring groove, one end of the wiring groove is located in the first part, and the other end of the wiring groove is located in the second part;

[0015] The filling piece further includes a connecting portion, which is located in the wiring groove, one end of the connecting portion is connected to the first main body portion, and the other end of the connecting portion is connected to the second main body portion.

[0016] Optionally, the coil fixing structure further includes:

[0017] an inner shell, wherein the inner shell is provided with a second accommodating cavity, and the mounting bracket is at least partially disposed in the second accommodating cavity; and

[0018] The outer shell is connected and fixed to the inner shell, the inner surface of the outer shell includes a first curved surface, and the side surface of the coil facing away from the bottom of the first accommodating cavity is tightly fitted with the first curved surface.

[0019] In a second aspect, an embodiment of the present application further provides a coil fixing method, comprising the following steps:

[0020] Providing a mounting bracket, the mounting bracket comprising a first accommodating cavity;

[0021] A coil module is provided, wherein the coil module includes a coil, the coil is used to transmit energy and / or information, and the coil is in an arc shape;

[0022] The coil module is at least partially disposed in the first accommodating cavity, so that the coil is at least partially accommodated in the first accommodating cavity;

[0023] Glue is poured into the first accommodating cavity to form a filling piece, thereby filling the gap between the inner wall of the first accommodating cavity and the coil module.

[0024] Optionally, pouring glue into the first accommodating cavity to form the filling piece includes:

[0025] A glue pouring mold is provided, the glue pouring mold comprising a lower mold and an upper mold, the lower mold having a third accommodating cavity, the upper mold being movable to a mold-closing state to close the third accommodating cavity, and the upper mold being movable to a mold-opening state to open the third accommodating cavity, the upper mold further being provided with a glue pouring flow channel;

[0026] When the upper mold is in an open mold state, placing the mounting bracket provided with the coil module into the third accommodating cavity;

[0027] When the upper mold is in a clamped state, glue is poured into the third accommodating cavity through the glue pouring channel to form the filling piece.

[0028] Optionally, the coil module further includes a wire electrically connected to the coil, and the mounting bracket includes a mounting hole communicating with the first accommodating cavity;

[0029] The step of at least partially disposing the coil module in the first accommodating cavity further includes: passing the wire through the mounting hole;

[0030] The step of placing the mounting bracket provided with the coil module into the third accommodating cavity further includes: providing a first movable insert; fixing one end of the wire located outside the mounting bracket to the first movable insert; and installing the first movable insert and the mounting bracket into the lower mold together.

[0031] Optionally, after pouring glue into the gap between the inner wall of the first accommodating cavity and the coil module to form a filling member, the coil fixing method further includes:

[0032] The mounting bracket with the filler is used as an insert for two-color injection molding to form an inner shell and an outer shell. The inner shell is provided with a second accommodating cavity. The mounting bracket is at least partially disposed in the second accommodating cavity. The outer shell is connected and fixed to the inner shell. The inner surface of the outer shell includes a first curved surface. The side surface of the coil facing away from the bottom of the first accommodating cavity is tightly fitted with the first curved surface.

[0033] In a third aspect, an embodiment of the present application further provides an electronic device comprising any of the above-mentioned coil fixing structures.

[0034] In the embodiment of the present application, when the length, width, and height dimensions of the electronic device are fixed, the coil is configured as an arc surface, which can provide a larger coupling area between the coil and other devices. Furthermore, the mounting bracket can support and secure the coil, and the filler can eliminate the gap between the inner wall of the first accommodating cavity and the coil, thereby preventing the coil from deforming toward the gap between the inner wall of the first accommodating cavity and the coil during subsequent assembly or use. Ultimately, the form and position tolerances of the coil can be well controlled, allowing the coil to stably and efficiently transmit energy and / or information. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and beneficial effects of the present application apparent.

[0036] Figure 1 A schematic structural diagram of a coil fixing structure provided in an embodiment of the present application.

[0037] Figure 2 for Figure 1 Exploded view of the coil fixing structure shown.

[0038] Figure 3 for Figure 1 Schematic diagram of the structure of the inner shell and outer shell of the coil fixing structure shown.

[0039] Figure 4 for Figure 3 Exploded view of the inner and outer shells of the coil fixing structure shown.

[0040] Figure 5 A flow chart of the coil fixing method provided in an embodiment of the present application.

[0041] Figure 6 This is a schematic diagram of the state of the glue filling mold in the embodiment of the present application in the mold opening state.

[0042] Figure 7 This is a cross-sectional view of the glue-filling mold in the closed mold state in an embodiment of the present application.

[0043] Figure 8 This is a schematic diagram showing the coil module being installed in the mounting bracket.

[0044] Figure 9 This is a schematic diagram of the state where the wire is fixed to the first movable insert.

[0045] Figure 10 Schematic diagram of the state of synchronously placing the mounting bracket and the first movable insert into the glue casting mold.

[0046] The numbers in the figure are:

[0047] 100. Coil fixing structure;

[0048] 11. Mounting bracket; 111. First accommodating cavity; 112. Second positioning hole; 113. Wire hole; 114. Second positioning post; 12. Coil; 13. Filler; 131. First main body; 132. Second main body; 133. First extension; 134. Connecting portion; 135. Second extension; 14. Magnetic shield; 141. First portion; 142. Second portion; 143. First positioning hole; 144. Wire trough; 15. Wire; 16. Inner shell; 161. Third accommodating cavity; 17. Outer shell;

[0049] 200. Glue filling mold;

[0050] 21. Lower mold; 211. Third accommodating cavity; 212. First movable insert; 213. Third positioning hole; 22. Upper mold; 221. Glue pouring channel. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0052] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a coil fixing structure provided in an embodiment of the present application. This embodiment of the present application provides a coil fixing structure 100, which is applied to an electronic device to enable the electronic device to transmit energy and / or information through a coil 12. The electronic device may be a charging device, a VR (Virtual Reality) device, an AR (Augmented Reality) device, a toy, a smart appliance, etc., and this embodiment of the present application does not limit this.

[0053] The coil 12 is used to transmit energy and / or information, that is, the coil 12 can be used only to transmit energy, the coil 12 can be used only to transmit information, or the coil 12 can be used to transmit both energy and information. This embodiment of the present application does not limit this.

[0054] Specifically, the coil 12 may be a receiving coil 12 for receiving energy and / or information, or the coil 12 may be a transmitting coil 12 for transmitting energy and / or information, which is not limited in the embodiment of the present application.

[0055] Specifically, when the coil 12 can be used to transmit energy, it can be used for wireless charging between different devices; when the coil 12 is used to transmit information, the information can be log information, firmware upgrade package, audio information, etc., which is not limited in this embodiment of the present application.

[0056] In related art, coils in electronic devices are typically planar coils, with planar coil 12 being a flat, thin sheet-shaped inductor. However, given the limited length, width, and height of the electronic device itself, the coupling area between the planar coil and the corresponding coil of another device is limited, limiting the charging efficiency of the electronic device.

[0057] Based on this, please continue to combine Figure 2 , Figure 2 for Figure 1An exploded view of the coil fixing structure is shown. In an embodiment of the present application, the coil fixing structure 100 may include a mounting bracket 11, a coil 12, and a filler 13. The mounting bracket 11 includes a first accommodating cavity 111. The coil 12 is used to transmit energy and / or information. The coil 12 is in the shape of an arc surface, or in other words, the coil 12 is in the shape of a thin sheet with an arc surface. Compared to a planar coil, when the length, width, and height dimensions of the electronic device are constant, the area of ​​the coil 12 in the embodiment of the present application can be larger, thereby increasing the coupling area between the coil 12 and other devices, thereby improving the transmission efficiency of the coil 12. The coil module is at least partially housed in the first accommodating cavity 111. Furthermore, the mounting bracket 11 can be used to support and fix the coil 12. The filler 13 is at least partially disposed in the first accommodating cavity 111 to fill the gap between the inner wall of the first accommodating cavity 111 and the coil 12. Thus, the gap between the inner wall of the first accommodating cavity 111 and the coil 12 can be eliminated by the filling piece 13, thereby preventing the coil 12 from deforming, such as rebounding or collapsing, toward the gap between the inner wall of the first accommodating cavity 111 and the coil 12 during subsequent assembly or use. Ultimately, the shape and position tolerances of the coil 12 can be well controlled, so that the coil 12 can transmit energy and / or information stably and efficiently.

[0058] In some embodiments, the coil fixing structure 100 may further include a magnetic isolation sheet 14. The magnetic isolation sheet 14 is attached to the side of the coil 12 facing away from the opening of the first accommodating cavity 111. On the one hand, the addition of the magnetic isolation sheet 14 can provide good protection for the coil 12 to prevent electromagnetic interference between the coil 12 and other metal components or electromagnetic components inside the electronic device. On the other hand, the addition of the magnetic isolation sheet 14 can also enhance the magnetic field strength at the coil 12, thereby improving the efficiency of the coil 12 in transmitting energy and / or information.

[0059] In some embodiments, the magnetic isolation sheet 14 can be made of a hard material, thereby effectively limiting the deformation of the coil 12, thereby further improving the efficiency of energy and / or information transmission by the coil 12. For example, the magnetic isolation sheet 14 can be made of silicon steel, ferrite, etc., which is not limited in this embodiment of the present application.

[0060] In some embodiments, the side surface of the magnetic isolation plate 14 facing away from the coil 12 can be tightly fitted with the bottom wall of the first accommodating cavity 111, and then the bottom wall of the first accommodating cavity 111 presses against the magnetic isolation plate 14 and the coil 12 to prevent the coil 12 and the magnetic isolation plate from deformation.

[0061] In some embodiments, the magnetic isolation sheet 14 and the coil 12 may be bonded together, for example, by adhesive or double-sided tape. This allows the coil 12 to be more firmly fixed to the magnetic isolation sheet 14 and allows the rigidity of the magnetic isolation sheet 14 to be better utilized to shape the coil 12.

[0062] In addition, in actual operation, the magnetic isolation sheet 14 and the coil 12 can be pre-bonded and fixed and then shaped simultaneously so that the magnetic isolation sheet 14 and the coil 12 can fit better, thereby avoiding the formation of a gap between the magnetic isolation sheet 14 and the coil 12 that causes deformation of the coil 12, and ultimately improving the transmission efficiency of the coil 12.

[0063] Of course, in some other implementations, the magnetic isolation sheet 14 may also be made of a flexible material, which is not limited in the embodiment of the present application.

[0064] In some embodiments, the magnetic barrier 14 may include a first portion 141 located on the inner circumference of the coil 12 and a second portion 142 located on the outer circumference of the coil 12. The filler 13 may include a first main body 131 and a second main body 132. The first main body 131 is located on the inner circumference of the coil 12 and covers the first portion 141. The second main body 132 is located on the outer circumference of the coil 12 and covers the second portion 142.

[0065] That is to say, since the coil 12 is in the shape of a ring-shaped sheet, the filler 13 can fill and shape the hollow structure in the middle of the coil 12 through the first main body 131, and the filler 13 can also fill and shape the outer peripheral side of the coil 12 through the second main body 132, so that the filler 13 can provide more comprehensive support and fixation for the coil 12, ultimately improving the transmission efficiency of the coil 12.

[0066] In some embodiments, the first portion 141 may be provided with a first positioning hole 143 . The mounting bracket 11 is provided with a second positioning hole 112 , which is in communication with the first positioning hole 143 .

[0067] Furthermore, in actual operation, the coil 12 and the magnetic shielding plate 14 can be assembled and then placed into the mounting bracket 11 using a positioning jig. Specifically, the positioning jig positions the magnetic shielding plate 14 and the mounting bracket 11 by engaging the first positioning hole 143 and the second positioning hole 112. For example, the positioning jig can include a first positioning post, which is inserted into the first positioning hole 143 and the second positioning hole 112 to align the magnetic shielding plate 14 with the mounting bracket 11.

[0068] Based on this, since the coil 12 is connected and fixed to the magnetic isolation plate 14, the coil 12 can be fixed on the mounting bracket 11 more accurately, thereby improving the position accuracy of the coil 12 after the electronic device is assembled, and ultimately allowing the coil 12 to transmit more efficiently.

[0069] In some embodiments, the magnetic isolation sheet 14 is bonded to the mounting bracket 11. In addition, during subsequent assembly or processing, the magnetic isolation sheet 14 and the coil 12 can be accurately fixed to the mounting bracket 11 to prevent the coil 12 from shifting, thereby improving the transmission efficiency of the coil 12.

[0070] For example, the surface of the magnetic isolation plate 14 facing away from the coil 12 is bonded and fixed to the bottom wall of the first accommodating cavity 111 by double-sided tape or other glue.

[0071] In some embodiments, the filling member 13 includes a first extending portion 133 , and the first extending portion 133 passes through the first positioning hole 143 and the second positioning hole 112 .

[0072] Furthermore, on the one hand, the filler 13 can better seal the holes on the mounting bracket 11, thereby improving the support and shaping effect of the filler 13 on the magnetic isolation sheet 14 and the coil 12. On the other hand, the filler 13 can also be clamped and positioned with the magnetic isolation sheet 14 and the mounting bracket 11 respectively through the first extension portion 133, so that the magnetic isolation sheet 14 and the coil 12 can be more firmly fixed to the mounting bracket 11, thereby preventing the filler 13, the magnetic isolation sheet 14 and the coil 12 from shifting relative to the mounting bracket 11, thereby achieving higher positioning accuracy of the coil 12 and ultimately improving the transmission efficiency of the coil 12.

[0073] In some embodiments, the magnetic isolation sheet 14 is provided with a wiring groove 144, one end of which is located in the first portion 141 and the other end of which is located in the second portion 142. The filler 13 also includes a connecting portion 134, which is located within the wiring groove 144 and has one end connected to the first main portion 131 and the other end connected to the second main portion 132.

[0074] Specifically, the filler 13 can be integrally formed, and by connecting the first main body 131 and the second main body 132 , the strength of each position of the filler 13 as a whole can be made higher, so that the filler 13 can provide better fixation and shaping for the coil 12 .

[0075] In some embodiments, the mounting bracket 11 includes a wire hole 113 that communicates with the first accommodating cavity 111. The coil fixing structure 100 also includes a wire 15 that passes through the wire hole 113. One end of the wire 15 located within the first accommodating cavity 111 is electrically connected to the coil 12, thereby enabling the coil 12 to be electrically connected to other electrical components within the electronic device through the wire 15.

[0076] Accordingly, the filler 13 includes a second extension portion 135, which is disposed between the inner wall of the wire hole 113 and the wire 15 to secure the portion of the wire 15 within the wire hole 113. Furthermore, the filler 13 can effectively secure the wire 15, preventing the wire 15 from swinging within the wire hole 113 and causing the coil 12 to loosen, or preventing the wire 15 from wearing at the end surface of the hole 113, thereby improving the installation stability of the coil 12 and the transmission efficiency.

[0077] In some embodiments, the second extension portion 135 may be snap-fitted to and fixed to the wire hole 113 , so that the filler 13 may be more firmly disposed on the mounting bracket 11 , thereby providing better shaping and fixing effects for the coil 12 .

[0078] Continuing, considering that the filler 13 can be integrally formed, the second extension portion 135 can be connected to the second main body portion 132. Furthermore, the filler 13, through the integrally formed first main body portion 131, connecting portion 134, second main body portion 132, first extension portion 133, and second extension portion 135, can provide more comprehensive support and fixation for the coil 12 and the magnetic isolation sheet 14, thereby preventing the coil 12 from rebounding or collapsing during subsequent assembly or use, and ultimately improving the transmission efficiency of the coil 12.

[0079] Specifically, the wire 15 may include a first wire and a second wire, the first wire is connected to the end of the outer peripheral side of the coil 12, the second wire is connected to the end of the inner peripheral side of the coil 12, the second wire is arranged in the wiring groove 144, and the connecting part 134 at least partially wraps the second wire.

[0080] Please continue to refer to Figure 3 and Figure 4 , Figure 3 for Figure 1 The schematic diagram of the structure of the inner shell and outer shell of the coil fixing structure is shown. Figure 4 for Figure 3Exploded view of the inner shell and outer shell of the coil fixing structure shown. The electronic device also includes an inner shell 16 and an outer shell 17. The inner shell 16 is provided with a second accommodating cavity 161, and the mounting bracket 11 is at least partially disposed in the second accommodating cavity 161. The outer shell 17 is connected and fixed to the inner shell 16. The inner surface of the outer shell 17 includes a first curved surface, and the first curved surface can be the same shape as the coil 12, so that the side surface of the coil 12 facing away from the bottom of the first accommodating cavity 111 is tightly fitted with the first curved surface. Thus, the mounting bracket 11 and the coil 12 are fixed to the inner surface of the outer shell 17 through the inner shell 16.

[0081] It can also be understood that compared to the filling piece 13 wrapping the entire coil 12, or a partial filling piece 13 being sandwiched between the first arc surface and the coil 12, the embodiment of the present application can make the distance between the coil 12 and the external environment smaller, so that the coupling distance between other devices and the coil 12 after being attached to the shell 17 can also be smaller, thereby improving the transmission efficiency of the coil 12.

[0082] In some embodiments, the side surface of the filler 13 facing the first arc surface, the side surface of the coil 12 facing the first arc surface, and the open end surface of the first accommodating cavity 111 are all tightly fitted with the first arc surface, and can thus jointly support the shell 17 to prevent the shell 17 from collapsing.

[0083] In some embodiments, the outer surface of housing 17 includes a second curved surface, which is disposed opposite the first curved surface and has the same shape as the first curved surface. The housing of other devices can also be formed into a corresponding curved surface shape to better fit the second curved surface. In this case, a similarly shaped curved coil can be installed inside the other device to couple with coil 12 of the present embodiment, thereby improving the transmission efficiency of coil 12 of the present embodiment.

[0084] In some embodiments, a second positioning post 114 may be provided on a side of the mounting bracket 11 facing away from the opening of the first accommodating cavity 111 . The second positioning post 114 may be provided through the inner shell 16 .

[0085] In some embodiments, the filler 13 may be made of PA (polyamide) or other materials such as PC (polycarbonate), which is not limited in the embodiments of the present application.

[0086] Please continue to refer to Figure 5 , Figure 5 A flow chart of the coil fixing method provided in an embodiment of the present application.

[0087] The present application also provides a method for fixing a coil, comprising the following steps:

[0088] S101 , providing a mounting bracket 11 , wherein the mounting bracket 11 includes a first accommodating cavity 111 .

[0089] S102 , providing a coil module, wherein the coil module includes a coil 12 , and the coil 12 is used to transmit energy and / or information. The coil 12 is in an arc shape, or in other words, the coil 12 is in an arc-shaped thin sheet shape.

[0090] In some embodiments, the coil module may further include a magnetic isolation sheet 14 , which is attached to one side surface of the coil 12 .

[0091] On the one hand, the addition of magnetic shielding sheet 14 effectively protects coil 12, preventing electromagnetic interference between coil 12 and other metal or electromagnetic components within the electronic device. On the other hand, the addition of magnetic shielding sheet 14 enhances the magnetic field strength at coil 12, thereby improving the efficiency of coil 12 in transmitting energy and / or information.

[0092] In some embodiments, the magnetic isolation sheet 14 can be made of a hard material, thereby effectively limiting the deformation of the first coil 12, thereby further improving the efficiency of energy and / or information transmission by the coil 12. For example, the magnetic isolation sheet 14 can be made of silicon steel, ferrite, etc., which is not limited in this embodiment of the present application.

[0093] In some embodiments, the magnetic isolation sheet 14 and the coil 12 may be bonded together, for example, by adhesive or double-sided tape. This allows the coil 12 to be more firmly fixed to the magnetic isolation sheet 14 and allows the rigidity of the magnetic isolation sheet 14 to be better utilized to shape the coil 12.

[0094] Of course, in some other implementations, the magnetic isolation sheet 14 may also be made of a flexible material, which is not limited in the embodiment of the present application.

[0095] In some embodiments, the magnetic isolation sheet 14 may include a first portion 141 located on the inner circumference side of the coil 12 and a second portion 142 located on the outer circumference side of the coil 12 .

[0096] Based on this, in some embodiments, before providing the coil module, the coil fixing method may further include: providing a coil to be shaped and a magnetic isolation sheet to be shaped; bonding and fixing the coil to be shaped and the magnetic isolation sheet to be shaped; synchronously shaping the coil to be shaped with the magnetic isolation sheet to be shaped bonded thereto, so that the coil to be shaped forms an arc-shaped coil 12 in the coil module, and the magnetic isolation sheet to be shaped forms an arc-shaped magnetic isolation sheet 14 in the coil module.

[0097] It can be understood that pre-bonding and fixing the magnetic isolation sheet 14 and the coil 12 and then simultaneously shaping them can make the magnetic isolation sheet 14 and the coil 12 fit better, thereby avoiding the formation of a gap between the magnetic isolation sheet 14 and the coil 12 for the coil 12 to deform, and ultimately improving the efficiency of the coil 12 in transmitting energy and / or information.

[0098] Exemplarily, synchronously shaping the coil to be shaped with the magnetic isolation sheet to be shaped may include: placing the coil to be shaped with the magnetic isolation sheet to be shaped into a shaping mold; and synchronously bending the magnetic isolation sheet to be shaped and the coil to be shaped through the shaping mold.

[0099] When the coils to be shaped and the magnetic isolation sheet to be shaped are simultaneously bent by the shaping die, the shaping die may be heated. Thus, the heating can release stress within the arcuate coils 12 and the arcuate magnetic isolation sheet 14, thereby preventing the arcuate coils 12 and the arcuate magnetic isolation sheet 14 from rebounding after being formed.

[0100] S103 , disposing the coil module at least partially in the first accommodating cavity 111 , so that the coil 12 is at least partially accommodated in the first accommodating cavity 111 .

[0101] In some embodiments, the first portion 141 may be provided with a first positioning hole 143. The mounting bracket 11 may be provided with a second positioning hole 112. Disposing the coil module at least partially within the first accommodating cavity 111 may include: disposing the coil 12 at least partially within the first accommodating cavity 111, such that the magnetic isolation sheet 14 is sandwiched between the coil 12 and the bottom wall of the first accommodating cavity 111, and communicating the second positioning hole 112 with the first positioning hole 143.

[0102] In some embodiments, the coil module and the mounting bracket 11 can be positioned using a positioning fixture. For example, the positioning fixture can include a first positioning post inserted into the first positioning hole 143 and the second positioning hole 112 to position the magnetic isolation sheet 14 and the mounting bracket 11 .

[0103] Based on this, since the coil 12 is connected and fixed to the magnetic isolation sheet 14, the coil 12 can be fixed on the mounting bracket 11 more accurately, thereby improving the position accuracy after the electronic device is assembled, so that the coil 12 can be transmitted more efficiently.

[0104] In some embodiments, disposing the coil module at least partially in the first accommodating cavity 111 may include: bonding and fixing the magnetic isolation sheet 14 to the mounting bracket 11 .

[0105] Furthermore, during the subsequent assembly or processing, the magnetic isolation sheet 14 and the coil 12 can be accurately fixed on the mounting bracket 11 to prevent the coil 12 from shifting, thereby improving the transmission efficiency of the coil 12 .

[0106] For example, the surface of the magnetic isolation plate 14 facing away from the coil 12 is bonded and fixed to the bottom wall of the first accommodating cavity 111 by double-sided tape or other glue.

[0107] S104 , pouring glue into the first accommodating cavity 111 to form a filling member 13 , thereby filling the gap between the inner wall of the first accommodating cavity 111 and the coil module.

[0108] Thus, the gap between the inner wall of the first accommodating cavity 111 and the coil 12 can be eliminated by the filling piece 13, thereby preventing the coil 12 from deforming, such as rebounding or collapsing, toward the gap between the inner wall of the first accommodating cavity 111 and the coil 12 during subsequent assembly or use. Ultimately, the shape and position tolerances of the coil 12 can be well controlled, so that the coil 12 can transmit energy and / or information stably and efficiently.

[0109] In some embodiments, the filler 13 may be made of PA (polyamide) or other materials such as PC (polycarbonate), which is not limited in the embodiments of the present application.

[0110] Please continue to combine Figure 6 and Figure 7 , Figure 6 for Figure 5 Schematic diagram of the state of the glue filling mold in the open mold state in the coil fixing method. Figure 7 The figure is a cross-sectional view of the glue-pouring mold in the closed state in an embodiment of the present application. Pouring glue into the first accommodating cavity 111 to form the filling member 13 may include: providing a glue-pouring mold 200, the glue-pouring mold 200 including a lower mold 21 and an upper mold 22, the lower mold 21 having a third accommodating cavity 211, the upper mold 22 capable of moving to a closed state to close the third accommodating cavity 211, and the upper mold 22 capable of moving to an open state to open the third accommodating cavity 211, the upper mold 22 further being provided with a glue-pouring flow channel 221; when the upper mold 22 is in the open state, the mounting bracket 11 having the coil module is placed into the third accommodating cavity 211; and when the upper mold 22 is in the closed state, glue is poured into the second accommodating cavity 161 through the glue-pouring flow channel 221 to form the filling member 13.

[0111] In some embodiments, the filler 13 may include a first main body 131 and a second main body 132, wherein the first main body 131 is located on the inner side of the coil 12 and covers the first part 141, and the second main body 132 is located on the outer side of the coil 12 and covers the second part 142.

[0112] In some embodiments, since the first positioning hole 143 and the second positioning hole 112 are connected, the filling piece 13 includes a first extending portion 133 , and the first extending portion 133 is disposed through the first positioning hole 143 and the second positioning hole 112 .

[0113] Furthermore, on the one hand, the filler 13 can better seal the holes on the mounting bracket 11, thereby improving the support and shaping effect of the filler 13 on the magnetic isolation sheet 14 and the coil 12. On the other hand, the filler 13 can also be clamped and positioned with the magnetic isolation sheet 14 and the mounting bracket 11 respectively through the first extension portion 133, so that the magnetic isolation sheet 14 and the coil 12 can be more firmly fixed to the mounting bracket 11, thereby preventing the filler 13, the magnetic isolation sheet 14 and the coil 12 from shifting relative to the mounting bracket 11, thereby achieving higher positioning accuracy of the coil 12 and ultimately improving the transmission efficiency of the coil 12.

[0114] Please continue to refer to Figures 8 to 10 , Figure 8 This is a schematic diagram of the coil module being placed in the mounting bracket. Figure 9 This is a schematic diagram of the state where the wire is fixed to the first movable insert. Figure 10 Schematic diagram of the state of synchronously placing the mounting bracket and the first movable insert into the glue-filling mold. The coil module also includes a wire 15, which is electrically connected to the coil 12, and the mounting bracket 11 includes a wire hole 113 connected to the first accommodating cavity 111. The coil module is at least partially arranged in the first accommodating cavity 111, and further includes: passing the wire 15 through the wire hole 113. The mounting bracket 11 with the coil module is placed in the third accommodating cavity 211, and further includes: providing a first movable insert 212; fixing the end of the wire 15 located outside the mounting bracket 11 to the first movable insert 212; and installing the first movable insert 212 and the mounting bracket 11 together into the lower mold 21.

[0115] After the glue is poured, the filler 13 further includes a second extension portion 135, which is disposed between the inner wall of the wire hole 113 and the wire 15 to secure the portion of the wire 15 within the wire hole 113. Furthermore, the filler 13 can effectively secure the wire 15, preventing the wire 15 from swinging within the wire hole 113 and causing the coil 12 to loosen, or preventing the wire 15 from wearing at the end surface of the hole 113, thereby improving the installation stability of the coil 12 and the transmission efficiency.

[0116] In some embodiments, the side of the mounting bracket 11 facing away from the opening of the first accommodating cavity 111 may be provided with multiple second positioning posts 114. Accordingly, the lower mold 21 and / or the first movable insert 212 may be provided with third positioning holes 213. Placing the mounting bracket 11 with the coil module into the second accommodating cavity 161 may further include inserting the multiple second positioning posts 114 into different third positioning holes 213 for positioning. This can improve the positioning accuracy of the coil 12.

[0117] In some embodiments, the magnetic isolation sheet 14 may be provided with a wiring groove 144, one end of which is located in the first portion 141 and the other end of which is located in the second portion 142. The filler 13 also includes a connecting portion 134, which is located within the wiring groove 144, one end of which is connected to the first main portion 131, and the other end of which is connected to the second main portion 132. Therefore, the filler 13 formed by the glue potting process also includes a connecting portion 134, which is located within the wiring groove 144, one end of which is connected to the first main portion 131, and the other end of which is connected to the second main portion 132.

[0118] In some embodiments, the wire 15 may include a first wire and a second wire, the first wire is connected to the end of the outer peripheral side of the coil 12, the second wire is connected to the end of the inner peripheral side of the limit, the second wire is arranged in the wiring groove 144, and the connecting part 134 at least partially wraps the second wire.

[0119] In some embodiments, when the upper mold 22 is in the closed state, glue is poured into the second accommodating cavity 161 through the glue pouring channel 221, which may include: pouring glue simultaneously on the inner side and the outer side of the coil 12. This can better fill the gaps between the coil module and the inner wall of the first accommodating cavity 111.

[0120] In some embodiments, after pouring glue into the first accommodating cavity 111 to form the filling piece 13, the manufacturing method may further include: performing two-color injection molding on the mounting bracket 11 formed with the filling piece 13 as an insert to form an inner shell 16 and an outer shell 17, the inner shell 16 is provided with a second accommodating cavity 161, the mounting bracket 11 is at least partially disposed in the second accommodating cavity 161, the outer shell 17 is connected and fixed to the inner shell 16, the inner surface of the outer shell 17 includes a first curved surface, and the side surface of the coil 12 facing away from the bottom of the first accommodating cavity 111 is tightly fitted with the first curved surface.

[0121] It is understood that, on the one hand, by directly injection molding the inner shell 16 and the outer shell 17 onto the mounting bracket 11, the positional accuracy of the coil 12 when mounted on the outer shell 17 can be greatly improved. On the other hand, combined with the aforementioned filling of the gap between the coil 12 and the inner wall of the first accommodating cavity 111 with the filler 13, the coil 12 can be effectively prevented from being compressed and deformed during the injection molding process. This not only reduces the form and position tolerances of the coil 12, but also makes the thickness of the inner shell 16 and the outer shell 17 more uniform and less prone to collapse, thereby improving the aesthetics of the electronic device.

[0122] In some embodiments, the mounting bracket 11 formed with the filler 13 is used as an insert for two-color injection molding to form the inner shell 16 and the outer shell 17, which may include: providing a two-color injection mold; placing the mounting bracket 11 formed with the filler 13 and the first movable insert 212 into the two-color injection mold, so that the mounting bracket 11 and the first movable insert 212 are fixed to the two-color injection mold, and the wire 15 is fixed to the first movable insert 212; performing two-color injection molding through the two-color injection mold to form the inner shell 16 and the outer shell 17.

[0123] Finally, the first movable insert 212 is removed.

[0124] Alternatively, after pouring glue into the first accommodating cavity 111 to form the filling piece 13, the fixing method may also include: providing an inner shell 16, the inner shell 16 being provided with a second accommodating cavity 161; at least partially disposing the mounting bracket 11 formed with the filling piece 13 in the second accommodating cavity 161; and forming an outer shell 17 by injection molding on the inner shell 16 provided with the mounting bracket 11 through an injection molding process, the outer shell 17 being connected and fixed to the inner shell 16, the inner surface of the outer shell 17 including a first curved surface, and the side surface of the coil 12 facing away from the bottom of the first accommodating cavity 111 being tightly fitted with the first curved surface.

[0125] It is understood that, on the one hand, by directly injection molding the inner shell 16 and the outer shell 17 onto the mounting bracket 11, the positional accuracy of the coil 12 when mounted on the outer shell 17 can be greatly improved. On the other hand, combined with the aforementioned filling of the gap between the coil 12 and the inner wall of the first accommodating cavity 111 with the filler 13, the coil 12 can be effectively prevented from being compressed and deformed during the injection molding process. This not only reduces the form and position tolerances of the coil 12, but also makes the thickness of the inner shell 16 and the outer shell 17 more uniform and less prone to collapse, thereby improving the aesthetics of the electronic device.

[0126] In some embodiments, disposing the mounting bracket 11 having the filler 13 at least partially within the second accommodating cavity 161 may include: disposing the mounting bracket 11 at least partially within the second accommodating cavity 161, and inserting the first movable insert 212 through the inner shell 16 so that the wire 15 is fixed to the first movable insert 212;

[0127] Finally, after the housing 17 is injection molded, the first movable insert 212 can be removed.

[0128] In some embodiments, the outer surface of housing 17 includes a second curved surface, which is disposed opposite the first curved surface and has the same shape as the first curved surface. The housing of other devices can also be formed into a corresponding curved surface shape to better fit the second curved surface. In this case, a similarly shaped curved coil can be installed inside the other device to couple with coil 12 of the present embodiment, thereby improving the transmission efficiency of coil 12 of the present embodiment.

[0129] In some embodiments, the side surface of the filler 13 facing the first arc surface, the side surface of the coil 12 facing the first arc surface, and the open end surface of the first accommodating cavity 111 are all tightly fitted with the first arc surface, and can thus jointly support the shell 17 to prevent the shell 17 from collapsing.

[0130] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0131] The coil fixing structure 100, coil fixing method and electronic device provided in the embodiments of the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A coil fixing structure, characterized in that: include: A mounting bracket, the mounting bracket comprising a first accommodating cavity; a coil, the coil being used to transmit energy and / or information, the coil being in an arc shape, and the coil being at least partially accommodated in the first accommodating cavity; a magnetic isolation sheet fixed to a side of the coil facing away from the opening of the first accommodating cavity, the magnetic isolation sheet comprising a first portion located on an inner circumference of the coil and a second portion located on an outer circumference of the coil, the first portion being provided with a first positioning hole, the mounting bracket being provided with a second positioning hole, the second positioning hole being in communication with the first positioning hole; and A filler is at least partially disposed in the first accommodating cavity to fill a gap between an inner wall of the first accommodating cavity and the coil, and the filler includes a first extension portion that passes through the first positioning hole and the second positioning hole.

2. The coil fixing structure according to claim 1, characterized in that: The magnetic isolation sheet is bonded to the side of the coil facing away from the opening of the first accommodating cavity, and the magnetic isolation sheet is bonded and fixed to the mounting bracket; The filler includes a first main body portion and a second main body portion. The first main body portion is located on the inner circumference side of the coil and covers the first portion. The second main body portion is located on the outer circumference side of the coil and covers the second portion.

3. The coil fixing structure according to claim 2, characterized in that: The magnetic isolation plate is provided with a wiring groove, one end of the wiring groove is located in the first part, and the other end of the wiring groove is located in the second part; The filling piece further includes a connecting portion, which is located in the wiring groove, one end of the connecting portion is connected to the first main body portion, and the other end of the connecting portion is connected to the second main body portion.

4. The coil fixing structure according to any one of claims 1 to 3, characterized in that: The coil fixing structure further includes: an inner shell, wherein the inner shell is provided with a second accommodating cavity, and the mounting bracket is at least partially disposed in the second accommodating cavity; and The outer shell is connected and fixed to the inner shell, the inner surface of the outer shell includes a first curved surface, and the side surface of the coil facing away from the bottom of the first accommodating cavity is tightly fitted with the first curved surface.

5. A coil fixing method, characterized in that: The steps include: Providing a mounting bracket, the mounting bracket comprising a first accommodating cavity and a mounting hole communicating with the first accommodating cavity; A coil module is provided, wherein the coil module includes a coil and a wire electrically connected to the coil, wherein the coil is used to transmit energy and / or information, and the coil is in an arc shape; The coil module is at least partially disposed in the first accommodating cavity, so that the coil is at least partially accommodated in the first accommodating cavity; Pouring glue into the first accommodating cavity to form a filling piece, thereby filling the gap between the inner wall of the first accommodating cavity and the coil module; The step of at least partially placing the coil module in the first accommodating cavity further comprises: passing the wire through the mounting hole; The step of pouring glue into the first accommodating cavity to form a filling piece includes: A glue pouring mold is provided, the glue pouring mold comprising a lower mold and an upper mold, the lower mold having a third accommodating cavity, the upper mold being movable to a mold-closing state to close the third accommodating cavity, and the upper mold being movable to a mold-opening state to open the third accommodating cavity, the upper mold further being provided with a glue pouring flow channel; When the upper mold is in an open mold state, a first movable insert is provided, an end of the wire located outside the mounting bracket is fixed to the first movable insert, and the first movable insert and the mounting bracket provided with the coil module are installed together into the third accommodating cavity; When the upper mold is in a clamped state, glue is poured into the third accommodating cavity through the glue pouring channel to form the filling piece.

6. The coil fixing method according to claim 5, characterized in that: After injecting glue into the gap between the inner wall of the first accommodating cavity and the coil module to form a filling member, the coil fixing method further includes: The mounting bracket with the filler is used as an insert for two-color injection molding to form an inner shell and an outer shell. The inner shell is provided with a second accommodating cavity. The mounting bracket is at least partially disposed in the second accommodating cavity. The outer shell is connected and fixed to the inner shell. The inner surface of the outer shell includes a first curved surface. The side surface of the coil facing away from the bottom of the first accommodating cavity is tightly fitted with the first curved surface.

7. An electronic device, characterized in that: The invention comprises the coil fixing structure according to any one of claims 1 to 4.

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