Protective case of intelligent terminal, and use method for protective case of intelligent terminal

Abstract

Disclosed in the present application are a protective case of an intelligent terminal, and a use method therefor. The protective case of an intelligent terminal comprises a case body, a reinforcing sheet, an RFID coil, a plurality of RFID chips and a plurality of switch elements, wherein a mounting groove is provided in an inner surface of the case body, and a positioning groove is provided in an outer surface of the case body, the positioning groove and the mounting groove being arranged opposite each other; the reinforcing sheet is arranged in the mounting groove; the RFID coil is fixedly attached to the reinforcing sheet; the plurality of RFID chips are mounted in the mounting groove and are electrically connected to the RFID coil, and the plurality of RFID chips are arranged in parallel; and the plurality of switch elements are mounted in the positioning groove, and the plurality of switch elements are respectively connected in series to circuits connecting the corresponding RFID chips to the RFID coil. With such a configuration, on one hand, the positioning and mounting of the flexible RFID coil in the mounting groove is facilitated, and on the other hand, the strength of the case at the positions where the mounting groove and the positioning groove are provided can be improved by means of the reinforcing sheet, and the thickness of the case can thus be made smaller.

Description

Protective case for smart terminal and method of using the protective case for smart terminal Technical Field

[0001] The present application relates to the technical field of protective cases for smart terminals, and in particular to a protective case for a smart terminal and a method for using the protective case for a smart terminal. Background Art

[0002] Today's smart terminals, such as smartphones, are becoming increasingly intelligent. With the dramatic increase in the functionality of smartphones, the ways in which they are operated have also become complex and diverse. Smartphones are primarily equipped with touch screens that enable human-computer interaction through virtual switch elements on the touch screen. Meanwhile, smartphones are also equipped with mechanical switch elements to assist consumers in directly triggering certain functions, such as making emergency calls, sending messages, and opening certain application software.

[0003] Although smartphones are equipped with mechanical switch elements, the number of mechanical switch elements on smartphones is generally two to three. In order to increase the number of mechanical switch elements that can quickly trigger a program or application in the smartphone, a mechanical switch element can be set on the protective cover of the smartphone. The mechanical switch element is connected in series with the RFID chip and RFID coil on the protective cover to form a circuit. After the mechanical switch element is triggered, it can generate an electronic tag that can be sensed and read by the NFC module on the smartphone.

[0004] However, after the mechanical switch element, RFID chip and RFID coil are installed on the protective cover of the smartphone, the structure of the protective cover will be complicated on the one hand, and the overall size of the protective cover will be increased on the other hand, so a solution is urgently needed. Technical issues

[0005] The main purpose of this application is to propose a protective case for a smart terminal, aiming to solve the problem that the protective cases of existing smart terminals are too large in size and have a complex structure. Technical Solutions

[0006] To achieve the above-mentioned purpose, the present application proposes a protective case for a smart terminal, which includes a housing, a reinforcement sheet, an RFID coil, multiple RFID chips, and multiple switch elements; wherein,

[0007] The inner surface of the shell is provided with a mounting groove, and the outer surface of the shell is provided with a positioning groove, and the positioning groove is arranged opposite to the mounting groove;

[0008] The reinforcement sheet is arranged in the installation groove;

[0009] The RFID coil is fixedly attached to the reinforcement sheet;

[0010] A plurality of RFID chips are installed in the installation slot and electrically connected to the RFID coil, and the plurality of RFID chips are arranged in parallel;

[0011] A plurality of the switch elements are installed in the positioning grooves, and the plurality of the switch elements are respectively connected in series to the circuits connecting the corresponding RFID chips and the RFID coils.

[0012] In some embodiments of the present invention, the shell includes a back panel and side panels extending in the same direction from the edge of the back panel, the back panel and the side panels together form an installation cavity for accommodating the smart terminal, the surface of the side panel adjacent to the installation cavity is recessed with the installation groove, and the surface of the side panel facing away from the installation cavity is provided with the positioning groove.

[0013] In some embodiments of the present invention, the back panel has a first area arranged opposite to the NFC sensing area of ​​the smart terminal and a second area arranged opposite to the wireless charging sensing area of ​​the smart terminal, the first area and the second area are arranged at intervals, the mounting groove is arranged adjacent to the first area and at intervals from the second area, a portion of the RFID coil is arranged in the first area, and the other portion of the RFID coil is arranged in the mounting groove.

[0014] In some embodiments of the present invention, the frequency of the RFID chip is 10 MHz to 15 MHz.

[0015] In some embodiments of the present invention, the RFID coil and the reinforcement sheet are fixed by bonding with double-sided tape.

[0016] In some embodiments of the present invention, the RFID coil is arranged on the side of the reinforcement plate facing the bottom of the installation groove, and the multiple RFID chips are arranged on the side of the RFID coil facing the bottom of the installation groove, and the multiple RFID chips are encapsulated by the packaging film.

[0017] In some embodiments of the present invention, a plurality of avoidance recesses are provided at the bottom of the installation groove, and the plurality of avoidance recesses are all used to avoid the installation of the RFID chip.

[0018] In some embodiments of the present invention, the positioning groove is connected to the mounting groove, the switch element includes a push-type button and a keycap, the push-type button is connected in series with the RFID coil and the corresponding RFID chip to form a loop, the push-type button is arranged at a position opposite to the RFID coil and the positioning groove, the keycap cooperates with the positioning groove and can reciprocate along the positioning groove to press or release the push-type button.

[0019] In some embodiments of the present invention, the push button is a pot button.

[0020] In some embodiments of the present invention, the RFID chip is disposed on a side of the RFID coil facing the positioning slot, and the protective shell of the smart terminal further comprises a polyester film, which covers the reinforcing sheet, the RFID coil, the plurality of RFID chips, and the button arrangement. In some embodiments of the present invention, the protective shell of the smart terminal further comprises a PET sheet, wherein the PET sheet is provided with a first avoidance hole extending therethrough corresponding to the RFID chip, and a second avoidance hole extending therethrough corresponding to the button. One side of the PET sheet abuts against the polyester film, and the other side of the PET sheet is bonded and fixed to the RFID coil via double-sided tape.

[0021] In some embodiments of the present invention, the switching element is a self-resetting knob switch; or, the switching element is an electronic switch, the protective shell of the smart terminal also includes a power supply module or a power connector, and the electronic switch is electrically connected to the power supply module or the power connector.

[0022] In some embodiments of the present invention, the protective case of the smart terminal further includes a decorative plate, which is provided on a side of the reinforcing sheet facing away from the positioning groove, and covers the notch of the installation groove.

[0023] The present invention further provides a method for using a protective case of a smart terminal. The protective case of the smart terminal is as described above. The method for using the protective case of the smart terminal includes:

[0024] Step S10: placing the smart terminal in the housing and positioning the NFC sensing area of ​​the smart terminal opposite to the RFID coil;

[0025] Step S20: triggering one of the multiple switch elements to connect the circuit where the triggered switch element is located and generate an electronic tag that can be sensed and read by the NFC module of the smart terminal.

[0026] In some embodiments of the present invention, the frequency of the RFID chip is 10 MHz to 15 MHz, and the method for using the protective case of the smart terminal further includes:

[0027] Step S30: simultaneously triggering two or more switch elements among the plurality of switch elements, so that the loops where the two or more triggered switch elements are located are simultaneously turned on and generate electronic tags that cannot be sensed by the NFC module of the smart terminal. Beneficial effects

[0028] In the protective case of the smart terminal of the present invention, a reinforcement sheet is fixedly installed in the mounting groove, an RFID coil is attached to the reinforcement sheet, multiple RFID chips are arranged in parallel and electrically connected to the RFID coils, and multiple switch elements are installed in the positioning grooves and respectively connected in series to the circuit connecting the corresponding RFID chips and RFID coils. This arrangement not only facilitates the positioning and installation of the flexible RFID coil in the mounting groove, but also improves the strength of the housing at the mounting groove and positioning groove, thereby making the housing thinner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0030] FIG1 is a schematic structural diagram of an embodiment of a protective case for a smart terminal of the present invention;

[0031] FIG2 is a schematic structural diagram of the housing in FIG1 ;

[0032] FIG3 is an enlarged schematic diagram of a portion A in FIG2 ;

[0033] FIG4 is a cross-sectional view of the housing in FIG1 ;

[0034] FIG5 is an enlarged schematic diagram of a portion B in FIG4 ;

[0035] FIG6 is a schematic diagram of an embodiment of an RFID coil, multiple RFID chips, and multiple switch elements in a protective shell of a smart terminal according to the present invention;

[0036] FIG7 is a schematic diagram of another embodiment of an RFID coil, multiple RFID chips, and multiple switch elements in a protective shell of a smart terminal according to the present invention;

[0037] FIG8 is an exploded view of the reinforcing sheet, RFID coil, RFID chip, switch element, packaging film, polyester film, and PET sheet of the protective case of the smart terminal of the present invention;

[0038] FIG9 is a schematic structural diagram of a decorative plate of a protective shell of a smart terminal according to the present invention;

[0039] FIG10 is a cross-sectional view of the protective case of the smart terminal in FIG1 ;

[0040] FIG11 is an enlarged schematic diagram of a portion C in FIG10 ;

[0041] FIG12 is a flow chart of an embodiment of a method for using a protective case of a smart terminal according to the present invention;

[0042] FIG13 is a flow chart of another embodiment of a method for using a protective case of a smart terminal according to the present invention.

[0043] Description of Figure Numbers:

[0044] Reference numerals: Reference numerals: 100 protective case of smart terminal 30 RFID coil 10 housing 40 RFID chip 10a mounting groove 50 switch element 10b positioning groove 51 button / press-type button 10c mounting cavity 52 keycap 10d avoidance recess 60 packaging film 11 back plate 70 polyester film 11a first area 80 PET sheet 11b second area 80a first avoidance hole 11c wiring notch 80b second avoidance hole 12 side panel 90 decorative panel 13 positioning column 90a assembly hole 20 reinforcement sheet 91 cover block 20a positioning hole

[0045] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. Modes for Carrying Out the Invention

[0046] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] Referring to Figures 1 to 11, the present invention provides a protective case 100 for a smart terminal. The protective case 100 for the smart terminal is suitable for electronic devices such as mobile phones and tablets equipped with NFC (Near Field Communication) function. The protective case 100 for the smart terminal includes a shell 10, a reinforcement sheet 20, an RFID (Radio Frequency Identification) coil 30, two or more RFID chips 40, and two or more switch elements 50. The reinforcement sheet 20, the RFID coil 30, the two or more RFID chips 40, and the two or more switch elements 50 are all arranged on the shell 10.

[0048] The shell 10 can have various shapes. The shell 10 can be flat, U-shaped, or basin-shaped with high sides and a low center. The shape of the shell 10 is not specifically limited here. The shell 10 can be made of various materials. The shell 10 can be made of flexible materials, such as rubber, silicone, or flexible plastic. The shell 10 can also be made of rigid materials, such as hard plastic. The shell 10 can also be made of composite materials, and the details are not listed here.

[0049] The housing 10 has an inner surface and an outer surface. The inner surface of the housing 10 is defined herein as the surface of the housing 10 adjacent to the smart terminal, and the outer surface of the housing 10 is defined as the surface of the housing 10 away from the smart terminal. A mounting groove 10a is provided on the inner surface of the housing 10. The mounting groove 10a can be in the shape of an elongated strip, a circle, a rectangle, or other shapes. A positioning groove 10b is provided on the outer surface of the housing 10. The positioning groove 10b is disposed opposite the mounting groove 10a. The positioning groove 10b can be in the shape of an elongated strip, a circle, a rectangle, or other shapes. The positioning groove 10b can be connected to the mounting groove 10a or not. The number of positioning grooves 10b can be one or more. When there is one positioning groove 10b, the positioning groove 10b is disposed corresponding to multiple switch elements 50. When there are multiple positioning grooves 10b, the multiple positioning grooves 10b are disposed in a one-to-one correspondence with the multiple switch elements 50.

[0050] The reinforcing sheet 20 has various shapes. The shape of the reinforcing sheet 20 can be a long strip, a circle, a rectangle, or other shapes. The shape of the reinforcing sheet 20 is usually adapted to the shape of the mounting groove 10a to facilitate the installation of the reinforcing sheet 20 in the mounting groove 10a and to cover the notch of the mounting groove 10a. The reinforcing sheet 20 can be made of metal materials, metal oxides, composite materials, and other materials. Preferably, the reinforcing sheet 20 is made of metal materials (such as aluminum, copper, stainless steel, etc.). Metal materials have the advantages of high strength and good bending resistance, which can ensure the support performance and bending resistance of the reinforcing sheet 20.

[0051] The RFID coil 30 is also called a radio frequency antenna, which mainly plays the role of energy and information transmission. The RFID coil 30 is fixedly attached to the surface of the reinforcement plate 20, that is, the RFID coil 30 can be set as a whole in the mounting groove 10a, or the RFID coil 30 can be partially set in the mounting groove 10a, and the other part is set on the inner surface, outer surface or inside of the shell 10. It is worth noting that if the other part of the RFID coil 30 is located outside the mounting groove 10a, the part of the RFID coil 30 located outside the mounting groove 10a is preferably located inside the shell 10, so as to avoid the RFID coil 30 being exposed to the outside.

[0052] The multiple RFID chips 40 are all electrically connected to the RFID coil 30, and the multiple RFID chips 40 are arranged in parallel. The multiple RFID chips 40 and the RFID coil 30 can be electrically connected via wires, or the multiple RFID chips 40 can be integrated into the RFID coil 30. The multiple RFID chips 40 are arranged in the mounting groove 10a. The multiple RFID chips 40 can be fixed to the groove wall of the mounting groove 10a, fixed to the reinforcement sheet 20, or arranged on the RFID coil 30, without limitation. Regardless of the method used to fix the multiple RFID chips 40 in the mounting groove 10a, the multiple RFID chips 40 can be fixed to the groove wall of the mounting groove 10a.

[0053] The switch element 50 is a component that controls whether a circuit is turned on or off. The switch element 50 can be a mechanical switch, an electronic switch, a capacitive switch, an inductive switch, or the like, and the type of switch element 50 is not specifically limited herein. Multiple switch elements 50 are mounted in the positioning groove 10b. Each switch element 50 corresponds to each of the RFID chips 40, meaning that each switch element 50 is connected in series to the circuit connecting the corresponding RFID chip 40 and the RFID coil 30.

[0054] That is, each switch element 50 is connected in series with the corresponding RFID chip 40 and RFID coil 30 to form a loop, and multiple switch elements 50, multiple RFID chips 40 and RFID coils 30 form multiple loops. The conduction of each loop can generate an electronic tag, and the electronic tag generated by each loop can be sensed and read by the NFC (Near Field Communication) module of the smart terminal.

[0055] When the smart terminal is mounted on the protective case 100 of the smart terminal, the NFC sensing area of ​​the smart terminal is positioned relative to the position of the RFID coil 30 on the case 10. When the smart terminal starts the NFC program, the NFC module of the smart terminal begins to scan the electronic tag. When one of the multiple switch elements 50 is turned on, the circuit formed by the turned-on switch element 50, the corresponding RFID chip 40, and the RFID coil 30 generates an electronic tag. After the NFC module of the smart terminal scans and reads the electronic tag, the controller of the smart terminal determines whether to execute the next action (such as opening a program, closing a program, pausing a program, shutting down the smart terminal, etc.). In other words, it determines whether the electronic tag is a control instruction in the smart terminal. If so, the corresponding action is executed; otherwise, no response is given. In this way, shortcut commands can be sent to the smart terminal through the protective case 100 of the smart terminal, thereby facilitating the user's operation of the smart terminal.

[0056] It should also be noted that the multiple switch elements 50 on the protective shell 100 of the smart terminal can be set with shortcut instructions according to the user's preferences. The following explanation is taken as an example of a smart phone as the smart terminal: after the NFC program of the smart phone is turned on, the NFC module of the smart phone starts to scan the electronic tag. When the first switch element among the multiple switch elements 50 is turned on, the conductive circuit generates a first electronic tag at this time. The first electronic tag can be a shortcut instruction for opening or closing the browser of the smart phone; when the second switch element among the multiple switch elements 50 is turned on, the conductive circuit generates a second electronic tag at this time. The second electronic tag can be a shortcut instruction for answering or hanging up a call on the smart phone.

[0057] When the third switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a third electronic tag at this time, and the third electronic tag can be a shortcut instruction for opening the camera and pressing the shutter of the smartphone; when the fourth switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a fourth electronic tag at this time, and the fourth electronic tag can be a shortcut instruction for opening a certain game app of the smartphone; when the fifth switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a fifth electronic tag at this time, and the fifth electronic tag can be a shortcut instruction for the pop-up power reminder page of the smartphone; when the sixth switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a sixth electronic tag at this time, and the sixth electronic tag can be a shortcut instruction for switching to a certain instant messaging software APP of the smartphone. The shortcut instructions of the smartphone corresponding to each electronic tag on the protective case 100 of the smart terminal can be customized according to personal preferences, and they are not listed one by one here.

[0058] It is worth noting that the protective shell 100 of the smart terminal needs to be communicated with the smart terminal before use so as to customize the electronic tags generated when the circuits where the multiple switching elements 50 are located are turned on. When customizing the electronic tags generated when the circuits where the multiple switching elements 50 are located are turned on, the multiple switching elements 50 are triggered one by one and the corresponding circuits are turned on. The NFC module of the smart terminal senses and reads the corresponding electronic tags one by one, and the smart terminal then customizes the electronic tags so that each electronic tag forms a shortcut instruction for the smart terminal to perform a certain action.

[0059] In the protective case 100 for a smart terminal of the present invention, a reinforcement sheet 20 is fixedly mounted within the mounting groove 10a, an RFID coil 30 is attached to the reinforcement sheet 20, multiple RFID chips are arranged in parallel and electrically connected to the RFID coils, and multiple switch elements 50 are mounted within the positioning grooves and respectively connected in series to the circuit connecting the corresponding RFID chip 40 and the RFID coil 30. This arrangement not only facilitates the positioning and installation of the flexible RFID coil 30 within the mounting groove 10a, but also enhances the strength of the housing 10 at the locations of the mounting groove 10a and the positioning groove 10b, thereby allowing the housing 10 to be made thinner.

[0060] Referring to Figures 2 to 5 , in some embodiments of the present invention, the housing 10 includes a back panel 11 and side panels 12 extending in the same direction from the edges of the back panel 11. The side panels 12 and back panel 11 together enclose a mounting cavity 10c for accommodating the smart terminal. The surface of the side panel 12 adjacent to the mounting cavity 10c is provided with a mounting groove 10a, and the surface of the side panel 12 facing away from the mounting cavity 10c is provided with a positioning groove 10b. This arrangement facilitates quick positioning and assembly of the smart terminal on the housing 10 and also facilitates positioning the RFID coil 30 of the housing 10 relative to the NFC sensing area of ​​the smart terminal.

[0061] It should be noted that the thickness of the side panel 12 is usually consistent with the thickness of the back panel 11. Although the setting of the installation groove 10a and the positioning groove 10b will cause the local strength and bending resistance of the side panel 12 to be reduced, after the reinforcement sheet 20 is assembled in the installation groove 10a, the strength and bending resistance of the reinforcement sheet 20 itself are relatively high. In this way, the strength and bending resistance of the side panel 12 can be improved by the reinforcement sheet 20, so that the strength and bending resistance of various parts of the side panel 12 are equivalent. In other words, the setting of the reinforcement sheet 20 makes the thickness of the side panel 12 thinner.

[0062] It should also be noted that the side panel 12 is usually provided with a first through hole corresponding to the button on the side of the smart terminal, a second through hole corresponding to the headphone jack on the side of the smart terminal, and a third through hole corresponding to the charging hole on the side of the smart terminal. The number of the first through hole, the second through hole and the third through hole can be set according to the corresponding smart terminal; the back panel 11 is provided with a camera window corresponding to the camera on the smart terminal, and the shape of the camera window can be circular, square, polygonal, etc.

[0063] Further, referring to Figures 4, 5, 10, and 11, the back panel 11 includes a first region 11a positioned opposite the NFC sensing area of ​​the smart terminal and a second region 11b positioned opposite the wireless charging sensing area of ​​the smart terminal. The first region 11a and the second region 11b are spaced apart, and the mounting groove 10a is positioned adjacent to the first region 11a and spaced apart from the second region 11b. A portion of the RFID coil 30 is positioned within the first region 11a, while the remaining portion of the RFID coil 30 is positioned within the mounting groove 10a. This arrangement prevents the RFID coil 30 and the metal reinforcement sheet 20 from interfering with the wireless charging of the smart terminal, while also preventing the RFID coil 30 and the metal reinforcement sheet 20 from being affected by the wireless charging magnetic field.

[0064] Based on the above schemes, in some embodiments of the present invention, the frequency of the RFID chip is 10MHz~15MHz. Preferably, the frequency of the RFID chip 40 is 13.56MHz. Since the frequency of the RFID chip 40 is 13.56MHz, the RFID chip 40 of this frequency does not require power supply when in use. In addition, when two or more of the multiple switching elements 50 are turned on at the same time, the RFID coil 30 receives unchanged energy transmitted from the smart terminal, but the two or more loops are turned on, which will cause the frequency of the RFID coil 30 to be too low, and thus the electronic tags generated by the RFID chips in the two or more turned-on loops cannot be sensed by the NFC module of the smart terminal. Therefore, by selecting an RFID chip within the above frequency range, the effect of selectively turning on one of multiple parallel RFID chips can also be achieved.

[0065] That is to say, in the above technical solution, by selecting an RFID chip 40 with a frequency within the range of 10MHz~15MHz, on the one hand, the protective shell 100 of the smart terminal does not need to be equipped with a power supply or an external power supply, which makes the thickness of the shell 10 can be made thinner. On the other hand, it also allows multiple parallel RFID chips to be turned on one by one, thus avoiding the problem that the user presses two or more switch elements at the same time, which causes the smart terminal to need to execute two or more actions synchronously, thereby affecting the normal operation of the smart terminal.

[0066] In some embodiments of the present invention, the RFID coil 30 and the reinforcement sheet 20 are bonded and fixed by double-sided tape, and both sides of the double-sided tape are sticky, which makes it easy to bond and fix the reinforcement sheet 20 and the RFID coil 30; in addition, the double-sided tape has insulating properties. When the reinforcement sheet 20 is made of metal material, the double-sided tape can also insulate the reinforcement sheet 20 and the RFID coil 30, thereby preventing the reinforcement sheet 20 from affecting the operation of the RFID coil 30; in addition, the use of double-sided tape can also adjust the distance between the reinforcement sheet 20 and the RFID coil 30 according to actual conditions, so that the space of the installation slot 10a can be fully utilized to ensure the installation of the RFID chip 40, the switch element 50 and other structural parts.

[0067] Referring to Figures 8 and 11 , in some embodiments of the present invention, the RFID coil 30 is disposed on the side of the reinforcement sheet 20 facing the bottom of the mounting slot 10a, and multiple RFID chips 40 are disposed on the side of the RFID coil 30 facing the bottom of the mounting slot 10a. The multiple RFID chips 40 are encapsulated by an encapsulation film 60. This arrangement prevents the RFID chips 40 from being exposed from the notch of the mounting slot 10a. Furthermore, the encapsulation film 60 fully encapsulates the RFID chips 40. The encapsulation film 60 itself is relatively thin, so when covering the RFID chips 40, the encapsulation film 60 barely affects the space occupied by the RFID chips 40. Furthermore, the encapsulation film 60 prevents the RFID chips 40 from directly contacting the bottom of the mounting slot 10a and being abraded.

[0068] Further, please refer to Figures 3, 5 and 11. In some embodiments of the present invention, the bottom of the installation groove 10a is recessed with multiple avoidance recesses 10d, and the multiple avoidance recesses 10d are all used to avoid the RFID chip 40. It should be noted that the avoidance recess 10d and the RFID chip 40 can be set one-to-one or one-to-many. Such a setting can avoid the problem of multiple RFID chips 40 directly contacting the bottom of the installation groove 10a and being worn.

[0069] In addition, it is worth noting that although a plurality of avoidance recesses 10d are provided at the bottom of the installation groove 10a, which further reduces the thickness of the shell 10 at the position where the installation groove 10a is opened, a reinforcement sheet 20 is installed inside the installation groove 10a. The strength of the reinforcement sheet 20 itself is relatively high, and the reinforcement sheet 20 also has relatively high resistance to bending, thereby ensuring the strength and resistance to bending of the shell 10 at the position where the installation groove 10a and the positioning groove 10b are opened.

[0070] Please refer to Figures 8 and 11. In some embodiments of the present invention, the positioning groove 10b is connected to the installation groove 10a, and each switch element 50 includes a push-type button 51 and a keycap 52. Each push-type button 51 is connected in series with the RFID coil 30 and the corresponding RFID chip 40 to form a loop. Each push-type button 51 is set at a position opposite to the RFID coil 30 and the positioning groove 10b. Each keycap 52 cooperates with the positioning groove 10b. The keycap 52 can reciprocate along the positioning groove 10b to push against or release the corresponding push-type button 51, thereby connecting or disconnecting the corresponding push-type button 51 and the corresponding RFID chip 40 and the loop where the RFID coil 30 is located.

[0071] It should be noted that the above-mentioned press-type button 51 can be a soft rubber button, a film button, a pot button and other types of buttons, which are not listed here one by one. Preferably, the press-type button 51 is a pot button, and the thickness of the pot button is relatively small, so that the overall thickness of the RFID coil 30 and the pot button can be made 0.3mm or less than 0.3mm, so that the depth of the installation groove 10a can be made relatively small, and then the thickness of the shell 10 can be made relatively thin. In addition, the pot button can automatically reset when the external force is removed, so that the switch element 50 is easy to operate and suitable for use by special groups such as the elderly.

[0072] Referring to Figure 11 , in some embodiments of the present invention, the protective case 100 of the smart terminal further includes a polyester film 70, which is used to cover the reinforcement sheet 20, the RFID coil 30, the RFID chip 40, and the push-button 51. This arrangement not only provides a dust barrier, but also, because the polyester film 70 itself is relatively moisture-proof, it prevents moisture from the outside air from entering the mounting slot 10a through the positioning slot 10b and affecting the normal operation of the RFID coil 30, the RFID chip 40, and the push-button 51.

[0073] In addition, the thickness of the polyester film 70 is very thin. After the polyester film 70 covers the reinforcing sheet 20, RFID coil 30, RFID chip 40 and button 51, it does not cause the overall thickness to change too much. Specifically, the overall thickness of the reinforcing sheet 20, RFID chip 40, RFID coil 30 and pot button covered by the polyester film 70 is 0.8 mm or less. In other words, the setting of the polyester film 70 does not cause the thickness of the shell 10 to increase.

[0074] Further, referring to Figures 8 and 11, in some embodiments of the present invention, the protective case 100 of the smart terminal also includes a PET (polyethylene terephthalate) sheet 80, and a first avoidance hole 80a is provided through the PET sheet 80 at a position corresponding to the RFID chip 40, and a second avoidance hole 80b is provided at a position of the PET sheet 80 corresponding to the button 51. One side of the PET sheet 80 is connected to the polyester film 70, and the other side of the PET sheet 80 is bonded and fixed to the RFID coil 30 by double-sided tape.

[0075] It is worth noting that the first avoidance hole 80a on the PET sheet 80 can be set corresponding to one or more RFID chips 40, and the second avoidance hole 80b on the PET sheet 80 can be set corresponding to one or more buttons 51. That is to say, the buttons 51 on the RFID coil 30 and the RFID chip 40 are sealed on all sides by the PET sheet 80. The PET sheet 80 has relatively good air, water, oil and odor barrier properties. The use of the PET sheet 80 and the polyester film 70 can further improve the waterproof and dustproof effects. In addition, the PET sheet 80 has a certain thickness, which can also ensure that the RFID chip 40 on the RFID coil 30 is spaced apart from the bottom of the mounting groove 10a.

[0076] Obviously, the above-mentioned switch element 50 can also be other types of switch elements 50. In some embodiments of the present invention, the switch element 50 is a reset knob switch, which includes a knob switch and a reset dial. The reset dial is rotatably installed on the housing 10, and a reset torsion spring is also provided between the reset dial and the housing 10. The reset dial drives the knob switch to rotate together under the action of external force. When the knob switch rotates a preset angle and is turned on, the knob switch is turned on with the corresponding RFID chip 40 and the RFID coil 30 and generates an electronic tag. When the reset dial is released, the reset dial is reset to the initial position under the action of the reset torsion spring, and the knob switch is also switched from the on state to the off state.

[0077] It is worth noting that the above-mentioned switching element 50 can also be other types of switching elements 50. For example, the above-mentioned switching element 50 can be an electronic switch. The types of electronic switches include MOS tubes, triodes, relays, solid-state relays, optocouplers, analog switches and other electronic components with switching functions. At this time, the protective shell 100 of the smart terminal also includes a power supply module or a power connector. The electronic switch is electrically connected to the power supply module or the power connector. The electronic switch can be turned on by knocking, shaking, pressing, touching, etc.

[0078] Referring to Figures 3 and 8 , in some embodiments of the present invention, the mounting slot 10a is configured in an elongated strip shape, with two positioning posts 13 protruding from the bottom of the mounting slot 10a. The two positioning posts 13 are spaced apart along the length of the mounting slot 10a. The reinforcement sheet 20 is configured in an elongated strip shape, with positioning holes 20a extending through each end of the reinforcement sheet 20 along the length. The two positioning holes 20a engage with the two positioning posts 13. This arrangement facilitates positioning and installation of the reinforcement sheet 20 in the mounting slot 10a, thereby facilitating assembly of the reinforcement sheet 20 within the mounting slot 10a.

[0079] It should be noted that the side of the reinforcement sheet 20 facing the notch of the mounting groove 10a can be filled with foam and rubber, please refer to Figures 5 and 7. The side of the reinforcement sheet 20 facing the notch of the mounting groove 10a can also be covered by a decorative panel 90 made of polycarbonate (PC) material. The decorative panel 90 can be bonded and fixed to the side panel 12 by glue, and the decorative panel 90 can also be fixed to the side panel 12 by ultrasonic welding. The decorative panel 90 can also be fixed to the side panel 12 in other ways, which are not listed here. Since the decorative panel 90 itself has a high strength, this can further enhance the strength of the position where the mounting groove 10a is opened in the shell 10.

[0080] Further, referring to Figures 3 and 5, in some embodiments of the present invention, the decorative panel 90 is provided with assembly holes 90a at both ends in the length direction, the two assembly holes 90a cooperate with the two positioning columns 13, the decorative panel 90 and the reinforcing sheet 20 are fixed by double-sided adhesive, and the decorative panel 90 is used to cover the installation groove 10a of the installation groove 10a. Such a configuration facilitates the positioning and installation of the decorative panel 90 on the side panel 12 of the shell 10, and further facilitates the fixed installation of the decorative panel 90 on the side panel 12.

[0081] Furthermore, referring to Figures 3, 5 and 9, a wiring notch 11c connected to the mounting groove 10a is provided at a position of the back panel 11 adjacent to the mounting groove 10a, and a covering block 91 is provided on one side of the decorative panel 90 adjacent to the back panel 11. The covering block 91 cooperates with the wiring notch 11c and covers the wiring notch 11c. With such a configuration, on the one hand, the RFID coil 30 can be hidden inside the shell 10, and on the other hand, the covering block 91 can also play a fool-proof role when the decorative panel 90 and the side panel 12 are assembled. In addition, the cooperation between the covering block 91 and the wiring notch 11c can also limit the decorative panel 90 in the length direction of the mounting groove 10a.

[0082] Referring to FIG. 12 , the present invention further provides a method for using a protective case 100 for a smart terminal. The protective case 100 for the smart terminal is as described in the above embodiments. The method for using the protective case 100 for the smart terminal includes:

[0083] Step S10: placing the smart terminal in the housing and positioning the NFC sensing area of ​​the smart terminal opposite to the RFID coil;

[0084] Step S20: triggering one of the multiple switch elements to connect the circuit where the triggered switch element is located and generate an electronic tag that can be sensed and read by the NFC module of the smart terminal.

[0085] When the smart terminal is mounted on the protective case 100 of the smart terminal, the NFC sensing area of ​​the smart terminal is positioned relative to the position of the RFID coil 30 on the case 10. When the smart terminal starts the NFC program, the NFC module of the smart terminal begins to scan the electronic tag. When one of the multiple switch elements 50 is turned on, the circuit formed by the turned-on switch element 50, the corresponding RFID chip 40, and the RFID coil 30 generates an electronic tag. After the NFC module of the smart terminal scans and reads the electronic tag, the controller of the smart terminal determines whether to execute the next action (such as opening a program, closing a program, pausing a program, shutting down the smart terminal, etc.). In other words, it determines whether the electronic tag is a control instruction in the smart terminal. If so, the corresponding action is executed; otherwise, no response is given. In this way, shortcut commands can be sent to the smart terminal through the protective case 100 of the smart terminal, thereby facilitating the user's operation of the smart terminal.

[0086] It should also be noted that the multiple switch elements 50 on the protective shell 100 of the smart terminal can be set with shortcut instructions according to the user's preferences. The following explanation is taken as an example of a smart phone as the smart terminal: after the NFC program of the smart phone is turned on, the NFC module of the smart phone starts to scan the electronic tag. When the first switch element among the multiple switch elements 50 is turned on, the conductive circuit generates a first electronic tag at this time. The first electronic tag can be a shortcut instruction for opening or closing the browser of the smart phone; when the second switch element among the multiple switch elements 50 is turned on, the conductive circuit generates a second electronic tag at this time. The second electronic tag can be a shortcut instruction for answering or hanging up a call on the smart phone.

[0087] When the third switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a third electronic tag at this time, and the third electronic tag can be a shortcut instruction for turning on the camera and pressing the shutter of the smartphone; when the fourth switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a fourth electronic tag at this time, and the fourth electronic tag can be a shortcut instruction for opening a game app on the smartphone; when the fifth switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a fifth electronic tag at this time, and the fifth electronic tag can be a shortcut instruction for popping up a power reminder page on the smartphone; when the sixth switch element among the multiple switch elements 50 is turned on, the turned-on circuit generates a sixth electronic tag at this time, and the sixth electronic tag can be a shortcut instruction for the smartphone to switch to a certain instant messaging software APP. The shortcut instructions of the smartphone corresponding to each electronic tag on the protective case 100 of the smart terminal can be customized according to personal preferences, and they are not listed one by one here.

[0088] It is worth noting that the protective shell 100 of the smart terminal needs to be communicated with the smart terminal before use so as to customize the electronic tags generated when the circuits where the multiple switching elements 50 are located are turned on. When customizing the electronic tags generated when the circuits where the multiple switching elements 50 are located are turned on, the multiple switching elements 50 are triggered one by one and the corresponding circuits are turned on. The NFC module of the smart terminal senses and reads the corresponding electronic tags one by one, and the smart terminal then customizes the electronic tags so that each electronic tag forms a shortcut instruction for the smart terminal to perform a certain action.

[0089] Please refer to FIG13 . The frequency of the RFID chip 40 is 10 MHz to 15 MHz. The method of using the protective case 100 of the smart terminal further includes:

[0090] Step S30: simultaneously triggering two or more switch elements among the plurality of switch elements, so that the loops where the two or more triggered switch elements are located are simultaneously turned on and generate electronic tags that cannot be sensed by the NFC module of the smart terminal.

[0091] Since the frequency of the RFID chip 40 is between 10MHz and 15MHz, preferably, the frequency of the RFID chip 40 is 13.56MHz. The RFID chip 40 of this frequency does not require power supply when in use. In addition, when two or more of the multiple switching elements 50 are turned on at the same time, the RFID coil 30 receives unchanged energy transmitted from the smart terminal, but the two or more loops are turned on, which will cause the frequency of the RFID coil 30 to be too low, and thus the electronic tags generated by the RFID chips in the two or more turned-on loops cannot be sensed by the NFC module of the smart terminal. Therefore, by selecting an RFID chip within the above-mentioned frequency range, the effect of turning on one of multiple parallel RFID chips can also be achieved.

[0092] That is to say, in the above technical solution, by selecting an RFID chip 40 with a frequency within the range of 10MHz~15MHz, on the one hand, the protective shell 100 of the smart terminal does not need to be equipped with a power supply or an external power supply, which makes the thickness of the shell 10 can be made thinner. On the other hand, it also allows multiple parallel RFID chips to be turned on one by one, thus avoiding the problem that the user presses two or more switch elements at the same time, which causes the smart terminal to need to execute two or more actions synchronously, thereby affecting the normal operation of the smart terminal.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A protective shell for a smart terminal, characterized in that: It includes a housing, a reinforcing sheet, an RFID coil, a plurality of RFID chips and a plurality of switch elements; wherein, The inner surface of the shell is provided with a mounting groove, and the outer surface of the shell is provided with a positioning groove, and the positioning groove is arranged opposite to the mounting groove; The reinforcing sheet is arranged in the mounting groove; The RFID coil is fixedly attached to the reinforcement sheet; A plurality of the RFID chips are installed in the installation slot and electrically connected to the RFID coil, and the plurality of the RFID chips are arranged in parallel; A plurality of the switch elements are installed in the positioning grooves, and the plurality of the switch elements are respectively connected in series to the circuits connecting the corresponding RFID chips and the RFID coils.

2. The protective case of the smart terminal according to claim 1, characterized in that: The shell includes a back plate and side plates extending in the same direction from the edge of the back plate, the back plate and the side plates together enclose an installation cavity for accommodating the smart terminal, the surface of the side plate adjacent to the installation cavity is recessed with the installation groove, and the surface of the side plate facing away from the installation cavity is provided with the positioning groove.

3. The protective case of the smart terminal according to claim 2, characterized in that: The back panel has a first area arranged opposite to the NFC sensing area of ​​the smart terminal and a second area arranged opposite to the wireless charging sensing area of ​​the smart terminal, the first area and the second area are arranged at intervals, the mounting groove is arranged adjacent to the first area and at intervals from the second area, a part of the RFID coil is arranged in the first area, and another part of the RFID coil is arranged in the mounting groove.

4. The protective case of the smart terminal according to claim 1, characterized in that: The frequency of the RFID chip is 10 MHz to 15 MHz.

5. The protective case of the smart terminal according to claim 1, characterized in that: The RFID coil and the reinforcement sheet are bonded and fixed by double-sided adhesive.

6. The protective case of the smart terminal according to claim 1, characterized in that: The RFID coil is arranged on one side of the reinforcing sheet facing the bottom of the mounting groove, the plurality of RFID chips are arranged on one side of the RFID coil facing the bottom of the mounting groove, and the plurality of RFID chips are packaged by a packaging film.

7. The protective case of the smart terminal according to claim 6, characterized in that: The bottom of the installation groove is concavely provided with a plurality of avoidance recesses, and the plurality of avoidance recesses are all used for avoiding the setting of the RFID chip.

8. The protective case of the smart terminal according to claim 1, characterized in that: The positioning groove is connected to the mounting groove, and the switch element includes a push-type button and a key cap. The push-type button is connected in series with the RFID coil and the corresponding RFID chip to form a loop. The push-type button is arranged at a position opposite to the RFID coil and the positioning groove. The key cap cooperates with the positioning groove and can reciprocate along the positioning groove to press or release the push-type button.

9. The protective case of the smart terminal according to claim 8, characterized in that: The push-type button is a pot-shaped button.

10. The protective case of the smart terminal according to claim 8, characterized in that: The RFID chip is arranged on a side of the RFID coil facing the positioning groove, and the protective shell of the smart terminal further comprises a polyester film, which covers the reinforcing sheet, the RFID coil, the plurality of RFID chips and the button arrangement.

11. The protective case of the smart terminal according to claim 10, characterized in that: The protective shell of the smart terminal also includes a PET sheet, a first avoidance hole is penetrated through the PET sheet corresponding to the RFID chip, a second avoidance hole is penetrated through the PET sheet corresponding to the button, one side of the PET sheet is in contact with the polyester film, and the other side of the PET sheet is bonded and fixed to the RFID coil by double-sided tape.

12. The protective case of the smart terminal according to claim 1, characterized in that: The switch element is a self-resetting knob switch; or, the switch element is an electronic switch, the protective shell of the smart terminal also includes a power supply module or a power connector, and the electronic switch is electrically connected to the power supply module or the power connector.

13. The protective case of the smart terminal according to claim 1, characterized in that: The protective shell of the smart terminal further comprises a decorative plate, which is arranged on a side of the reinforcing sheet facing away from the positioning groove, and the decorative plate covers a notch of the mounting groove.

14. A method for using a protective shell of a smart terminal, characterized in that: The protective shell of the smart terminal is the protective shell of the smart terminal according to any one of claims 1 to 13, and the method for using the protective shell of the smart terminal includes: Step S10: placing the smart terminal in the housing and arranging the NFC sensing area of ​​the smart terminal to face the RFID coil; Step S20: triggering one of the multiple switch elements to connect the loop where the triggered switch element is located and generate an electronic tag that can be sensed and read by the NFC module of the smart terminal.

15. The method for using the protective shell of the smart terminal according to claim 14, characterized in that: The frequency of the RFID chip is 10MHz~15MHz, and the method for using the protective shell of the smart terminal also includes: Step S30: triggering two or more switch elements among the plurality of switch elements simultaneously, so that the loops where the two or more triggered switch elements are located are simultaneously turned on and generate electronic tags that cannot be sensed by the NFC module of the smart terminal.

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