Protection case for electronic product

Abstract

Disclosed in the present application is a protection case for an electronic product, comprising a case body (10) and further comprising a switch structure (15) arranged on the case body (10), the switch structure (15) comprising a reinforcement piece (20) arranged on the inner wall of the case body (10), a switching element (50) arranged on the outer side of the reinforcement piece (20), and a signal switching component arranged between the reinforcement piece (20) and the switching element (50). When the switching element (50) is pressed to a working position, the signal switching component triggers a signal. The switching element (50) has an initial position and can reciprocate between the initial position and the working position, the distance between the initial position and the working position ranging from 0.05 mm to 0.5 mm. The reinforcement piece (20) is used for enhancing the bending resistance of the case body (10) at the position of the switch structure (15) and is used for resisting to stress on the switch element (50). The present application ensures the sensitivity and reliability of the switching element (50).

Description

A protective case for electronic products Technical Field

[0001] The invention relates to a protective shell for electronic products. Background Art

[0002] The protective cases of electronic products are typically relatively thin. For example, the thickness of a mobile phone's protective case is typically less than 3mm. Adding additional functions to such a thin protective case and setting a switch button for that function presents certain difficulties. For example, the button may need to have a large travel, causing it to visibly protrude relative to the protective case. Furthermore, the user may need to press the button until it touches the outer surface of the electronic product to trigger the relevant function. If it does not touch the electronic product, the relevant function may not be triggered, which may give the user the illusion of functional malfunction or failure. Therefore, a better improvement solution is urgently needed. Technical issues

[0003] One object of the present application is to improve the reliability of buttons of a protective case of an electronic product. Technical Solutions

[0004] To this end, the present application provides an electronic product protective case, comprising a shell and a switch structure arranged on the shell, wherein the switch structure comprises a reinforcement sheet arranged on the inner wall of the shell, a switch element arranged on the outside of the reinforcement sheet, and a signal switching component arranged between the reinforcement sheet and the switch element, wherein the signal switching component triggers a signal when the switch element is pressed to a working position; the switch element has an initial position and can reciprocate between the initial position and the working position, and the distance between the initial position and the working position is between 0.05 and 0.5 mm; the reinforcement sheet is used to strengthen the bending resistance of the shell at the switch structure, and to resist the pressure when the switch element is pressed.

[0005] In one embodiment of the present application, the electronic product protective shell is provided with a circuit module, and the circuit module is controlled by the signal switching component; the thickness of the shell does not exceed 1.6 mm, and the distance between the initial position and the working position of the switching element is no more than 0.3 mm.

[0006] In one embodiment of the present application, the circuit module includes an RFID coil, and an RFID chip corresponding to the RFID coil is disposed in the housing or the switch structure.

[0007] In one embodiment of the present application, an inner groove is provided on the inner surface of the shell, and the reinforcement sheet is fully or partially accommodated in the inner groove; the shell is provided with a switch through hole connected to the inner groove, the shell forms a clamping portion at the switch through hole, and the switch element is provided with a neck that is engaged with the clamping portion, and the size of the neck along the thickness direction of the shell is greater than the thickness of the clamping portion so that the switch element can reciprocate between the initial position and the working position.

[0008] In one embodiment of the present application, the switch element includes a push button and a key cap located outside the push button, and the neck is provided on the key cap.

[0009] In one embodiment of the present application, the press-type button is a pot button, and the protruding middle portion of the pot button presses against the keycap.

[0010] In one embodiment of the present application, the switch structure further includes a polyester film, which covers the reinforcing plate, the signal switching component and the push-type button, and the polyester film is provided with an avoidance hole at a position corresponding to the push-type button.

[0011] In one embodiment of the present application, the reinforcement sheet and the shell are provided with a positioning structure, and the positioning structure includes a positioning column provided on one of the reinforcement sheet and the shell, and a positioning hole provided on the other of the reinforcement sheet and the shell.

[0012] In one embodiment of the present application, the reinforcement sheet is in the shape of an elongated strip and is fixed to the inner wall of the shell by snapping and / or gluing.

[0013] In one embodiment of the present application, the signal switching component is in the form of a circuit window, the circuit window is formed on a thin film circuit board and / or an RFID coil, and the circuit window can be closed or maintained open by the switch element (50). Beneficial effects

[0014] The present application improves the bending resistance of the shell at the switch structure by providing a reinforcement sheet, and the reinforcement sheet resists the pressure when the switch element is pressed. When the switch element is pressed, the reinforcement sheet hardly bends, thereby ensuring the sensitivity and reliability of the switch element and reducing the stroke of the switch element and the size of the protective shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To further explain the specific technical content of this case, please first refer to the attached drawings, in which:

[0016] FIG1 is a schematic structural diagram of an embodiment of a protective case for an electronic product according to the present invention;

[0017] FIG2 is an exploded schematic diagram of a switch structure used in the protective case shown in FIG1 ;

[0018] FIG3 is a schematic structural diagram of the decorative plate of the protective shell shown in FIG1 ;

[0019] FIG4 is a cross-sectional view of the protective shell shown in FIG1 ;

[0020] FIG5 is an enlarged schematic diagram of a portion C in FIG4 .

[0021] FIG6 is a schematic structural diagram of the housing of the protective housing shown in FIG1 with the switch structure and the decorative panel removed;

[0022] FIG7 is an enlarged schematic diagram of a portion A in FIG6 ;

[0023] FIG8 is a cross-sectional view of the housing shown in FIG1 ;

[0024] FIG9 is an enlarged schematic diagram of a portion B in FIG8 ;

[0025] FIG10 is a schematic diagram of an RFID coil, multiple RFID chips, and multiple switch elements used in an embodiment of a protective case for an electronic product of the present invention;

[0026] FIG. 11 is a schematic diagram of an RFID coil, multiple RFID chips, and multiple switch elements used in another embodiment of a protective case for an electronic product of the present invention.

[0027] Description of Figure Numbers:

[0028] Reference numerals: Reference numerals: 100 protective case for electronic products 20 reinforcement sheet 10 housing 20a positioning hole 10a inner groove 30 RFID coil 10b outer groove 40 RFID chip 10c mounting cavity 50 switch element 10d avoidance recess 51 button / press-type button 10h switch through hole 52 keycap 10i clamping portion 52a neck 11 back plate 60 packaging film 11a first area 70 polyester film 11b second area 80 PET sheet 11c wiring notch 80a first avoidance hole 12 side panel 80b second avoidance hole 13 positioning column 90 decorative plate 15 switch structure 90a assembly hole 91 cover block

[0029] 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

[0030] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings of the present invention.

[0031] Referring to FIG. 1 , the present invention provides a protective case 100 for an electronic product. This protective case 100 is suitable for electronic products such as mobile phones and tablet computers. The protective case 100 includes a housing 10, a switch structure 15 attached to the housing 10, and a decorative panel 90 attached to the switch structure 15. The switch structure 15 includes a switch element 50 for controlling a circuit module attached to the housing 10. For example, the circuit module may be an RFID coil 30 and its RFID chip (not shown in FIG. 1 ). In this case, the protective case 100 is preferably suitable for electronic products with NFC (Near Field Communication) functionality.

[0032] 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.

[0033] Referring to Figures 2 through 5 , the switch structure 15 includes a reinforcement sheet 20 attached to the inner wall of the housing 10, a switch element 50 attached to the outer side of the reinforcement sheet 20, and a signal switching component disposed between the reinforcement sheet 20 and the switch element 50. The signal switching component triggers a signal when the switch element 50 is pressed to the operating position. In the present invention, a trigger signal specifically refers to a change in an electrical signal, such as a change from an open circuit to a closed circuit, or vice versa, or a change in voltage or current.

[0034] The switch element 50 has an initial position and can reciprocate between the initial position and the working position. The distance between the initial position and the working position is between 0.05 and 0.5 mm, which is also referred to as the switch stroke. In this embodiment, the signal switching component includes an RFID coil 30. It is understandable that the signal switching component can be a thin-film circuit board with other functions, etc. Preferably, the distance between the initial position and the working position is between 0.1 and 0.3 mm, and the thickness of the housing 10 does not exceed 1.2 mm. More preferably, the thickness of the housing 10 does not exceed 1 mm. The reinforcing sheet 20 is used to strengthen the bending resistance of the housing 10 at the switch structure 15 and to resist the pressure when the switch element 50 is pressed. In one embodiment, the signal switching component is in the form of a circuit window, which is formed in the thin-film circuit board and / or RFID coil. The circuit window can be closed or maintained open by the switch element. For example, when the switch element 50 is pressed to the working position, the window is closed to connect the circuit, and when reset, the circuit is maintained open.

[0035] In this embodiment, the inner surface of the housing 10 is provided with an inner groove 10a, and the reinforcement sheet 20 is fully or partially accommodated within the inner groove 10a. The housing 10 has a switch through-hole 10h that communicates with the inner groove 10a. The housing 10 forms a latching portion 10i at the switch through-hole 10h. The switch element 50 has a neck 52a that engages with the latching portion 10i. The neck 52a, along the thickness direction of the housing 10, is larger than the thickness of the latching portion 10i, enabling the switch element 50 to reciprocate between the initial position and the operating position.

[0036] The RFID coil 30 is mounted on the side of the reinforcement sheet 20 facing the bottom of the inner slot 10a. Multiple RFID chips 40 are also mounted on the side of the RFID coil 30 facing the bottom of the inner slot 10a. Each of the RFID chips 40 is encapsulated by an encapsulation film 60. This arrangement prevents the RFID chips 40 from being exposed through the notch of the inner slot 10a. Furthermore, the encapsulation film 60 completely encapsulates the RFID chips 40. The encapsulation film 60 itself is relatively thin, so covering the RFID chips 40 barely affects the space occupied by the chips 40. Furthermore, the encapsulation film 60 prevents the RFID chips 40 from directly contacting the bottom of the inner slot 10a and potentially causing wear.

[0037] The bottom of the inner groove 10a can be provided with a plurality of avoidance recesses 10d, and the plurality of 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 inner groove 10a and being worn.

[0038] It's also worth noting that while the bottom of the inner groove 10a is provided with multiple relief recesses 10d, further reducing the thickness of the housing 10 at the location where the inner groove 10a is located, the inner groove 10a is fitted with a reinforcement sheet 20. The reinforcement sheet 20 itself is relatively strong and has a high degree of bending resistance, thus ensuring the strength and bending resistance of the housing 10 at the locations where the inner groove 10a and outer groove 10b are located. Furthermore, the high bending resistance of the reinforcement sheet 20 ensures that when the switch element 50 is pressed, the reinforcement sheet 20 hardly bends, ensuring the sensitivity and reliability of the switch element 50 and reducing the travel of the switch element 50 and the size of the protective housing 100.

[0039] In this embodiment, an outer groove 10b is also provided on the outside of the housing 10, and the switch elements 50 are partially housed in the outer groove 10b. The outer groove 10b is connected to the inner groove 10a via a switch through hole 10h. Each switch element 50 includes a push-button 51 and a keycap 52. Each push-button 51 is connected in series with the RFID coil 30 and the corresponding RFID chip 40 to form a circuit. Each push-button 51 is positioned opposite the RFID coil 30 and the outer groove 10b. Each keycap 52 cooperates with the outer groove 10b. The keycap 52 can reciprocate along the outer groove 10b to press against or release the corresponding push-button 51, thereby connecting or disconnecting the circuit between the corresponding push-button 51, the corresponding RFID chip 40, and the RFID coil 30.

[0040] 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. The thickness of the pot button is relatively small, and the overall thickness of the RFID coil 30 and the pot button can be made 0.3mm or less than 0.3mm. Correspondingly, the depth of the inner 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, which makes the switch element 50 easy to operate and suitable for use by special groups such as the elderly.

[0041] Referring to Figure 5 , in some embodiments of the present invention, the protective case 100 for an electronic product 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 dust protection, but also, because the polyester film 70 itself is relatively moisture-proof, it prevents moisture from the outside air from entering the inner groove 10a through the outer groove 10b and affecting the normal operation of the RFID coil 30, the RFID chip 40, and the push-button 51.

[0042] 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.

[0043] Furthermore, in some embodiments of the present invention, the protective case 100 of the electronic product also includes a PET (polyethylene terephthalate) sheet 80, and a first avoidance hole 80a is provided through the PET sheet 80 at the position corresponding to the RFID chip 40, and a second avoidance hole 80b is provided at the 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.

[0044] 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 surrounded 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 inner groove 10a.

[0045] 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.

[0046] 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 electronic product 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.

[0047] Please also refer to Figures 6 to 9, which illustrate the structure of the housing 10 after removing the switch structure and decorative panel from the protective case 100. In some embodiments of the present invention, the inner groove 10a is configured as an elongated strip, with two positioning posts 13 protruding from the bottom of the inner groove 10a. The two positioning posts 13 are spaced apart along the length of the inner groove 10a. The reinforcement sheet 20 is configured as an elongated strip, with positioning holes 20a extending through both ends of the reinforcement sheet 20 in the longitudinal direction. The two positioning holes 20a are plugged into the two positioning posts 13. This configuration facilitates positioning and installation of the reinforcement sheet 20 within the inner groove 10a, thereby facilitating assembly of the reinforcement sheet 20 within the inner groove 10a.

[0048] It should be noted that the side of the reinforcement sheet 20 facing the notch of the inner groove 10a can be filled with foam and rubber, please refer to Figure 9 (in order to show the internal structure, Figure 9 removes the switch structure and decorative panel 90, etc.) and Figure 11. The side of the reinforcement sheet 20 facing the notch of the inner 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 inner groove 10a is opened in the shell 10.

[0049] Further, please refer to Figures 7 and 9 (in order to show the internal structure, Figures 6 and 9 remove the switch structure and decorative panel 90, etc.). 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 reinforcement sheet 20 are fixed by double-sided adhesive. The decorative panel 90 is used to cover the inner groove 10a of the inner 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.

[0050] Furthermore, referring to Figures 7, 9 and 3, a wiring notch 11c connected to the inner groove 10a is provided at a position of the back panel 11 adjacent to the inner 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 inner groove 10a.

[0051] 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. The inner surface of the housing 10 is provided with an inner groove 10a. The inner groove 10a can be arranged in an elongated, circular, rectangular, or other shape. The outer groove 10b is provided on the outer surface of the housing 10. The outer groove 10b can be arranged opposite to the inner groove 10a or offset. The outer groove 10b can be arranged in an elongated, circular, rectangular, or other shape. The outer groove 10b can be connected to the inner groove 10a or not. The number of outer grooves 10b can be one or more. When there is one outer groove 10b, the outer groove 10b is provided corresponding to multiple switch elements 50. When there are multiple outer grooves 10b, the multiple outer grooves 10b are provided in a one-to-one correspondence with the multiple switch elements 50.

[0052] 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 inner groove 10a to facilitate the installation of the reinforcing sheet 20 in the inner groove 10a and to seal the notch of the inner 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 metal aluminum, metal 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.

[0053] As shown in Figures 5 and 10-11, 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 inner groove 10a, and the RFID coil 30 can also be partially set in the inner 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 inner groove 10a, the part of the RFID coil 30 located outside the inner groove 10a is preferably located inside the shell 10, so as to avoid the RFID coil 30 being exposed to the outside.

[0054] The multiple RFID chips 40 are all electrically connected to the RFID coil 30, and the multiple RFID chips 4030 are arranged in parallel on the same RFID coil 30. The multiple RFID chips 40 can be arranged outside the inner groove 10a, but are preferably located inside the housing 10 and close to the NFC sensing area of ​​the mobile phone. Alternatively, they can be arranged inside the inner groove 10a, for example, fixed to the groove wall of the inner groove 10a, or the multiple RFID chips 40 can also be fixed to the reinforcement sheet 20, without limitation.

[0055] 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 outer slot 10b. Each of the switch elements 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.

[0056] That is, each switch element 50 is connected in series with the corresponding RFID chip 40 and RFID coil 30 to form a loop. 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 each electronic tag generated by the loop can be sensed and read by the NFC (Near Field Communication) module of the smart terminal. However, it should be noted that only one loop is allowed to be conductive and generate an electronic tag at a time to ensure that the energy in the RFID coil 30 is sufficient for the electronic tag to be sensed and read by the NFC module of the smart terminal.

[0057] When the smart terminal is assembled on the protective shell 100 of the electronic product, the NFC sensing area of ​​the smart terminal is relatively set to the position of the RFID coil 30 set on the shell 10. When the smart terminal starts the NFC program, the NFC module of the smart terminal starts 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, turning off the smart terminal, etc.), that is, judging whether the electronic tag is a control instruction in the smart terminal. If so, the corresponding action is executed, otherwise no response is given. With this setting, shortcut instructions can be sent to the smart terminal through the protective shell 100 of the electronic product, thereby facilitating the user to operate the smart terminal.

[0058] It should also be noted that the multiple switch elements 50 on the protective case 100 of the electronic product can be set with shortcut instructions according to the user's preferences. The following explanation is given using a smart phone as an example of a smart terminal: after the NFC program of the smart phone is turned on, the NFC module of the smart phone starts scanning the electronic tag. When the first switch element among the multiple switch elements 50 is turned on, the conductive circuit now generates a first electronic tag. 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 now generates a second electronic tag. The second electronic tag can be a shortcut instruction for answering or hanging up a call on the smart phone.

[0059] 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 electronic product can be customized according to personal preferences, and they are not listed one by one here.

[0060] It is worth noting that the protective case 100 of the electronic product 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.

[0061] In the protective case 100 for an electronic product of the present invention, a reinforcement sheet 20 is fixedly mounted within the inner 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 30, and multiple switch elements 50 are mounted within the outer groove and connected in series to the circuit connecting the corresponding RFID chips 40 and the RFID coils 30. This arrangement not only facilitates the positioning and installation of the flexible RFID coil 30 within the inner groove 10a, but also enhances the strength of the housing 10 at the inner groove 10a through the reinforcement sheet 20, thereby allowing the housing 10 to be made thinner.

[0062] Referring to Figures 6 to 11 , 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 recessed with an inner groove 10a, and the surface of the side panel 12 facing away from the mounting cavity 10c is recessed with an outer 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.

[0063] It should be noted that the thickness of the side panel 12 is generally consistent with that of the back panel 11. Although the provision of the inner groove 10a and the outer groove 10b may reduce the strength and bending resistance of the side panel 12 locally, after the reinforcement sheet 20 is assembled in the inner groove 10a, the reinforcement sheet 20 itself has relatively high strength and bending resistance. This can improve the strength and bending resistance of the side panel 12 through the reinforcement sheet 20, thereby making the strength and bending resistance of the side panel 12 equivalent at all locations. In other words, the provision of the reinforcement sheet 20 allows the thickness of the side panel 12 to be made thinner. It should also be noted that the side panel 12 is generally 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 port 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. The shape of the camera window can be circular, square, polygonal, etc. Further, referring to Figures 8, 9, 4, and 5, the back panel 11 has a first area 11a disposed opposite the NFC sensing area of ​​the smart terminal and a second area 11b disposed opposite the wireless charging sensing area of ​​the smart terminal. The first area 11a and the second area 11b are spaced apart. The inner groove 10a is disposed adjacent to the first area 11a and spaced apart from the second area 11b. A portion of the RFID coil 30 is disposed in the first area 11a, and another portion of the RFID coil 30 is disposed within the inner groove 10a. After the electronic product is installed in the protective case 100, the NFC sensing area of ​​the electronic product is close to the first area 11a. This arrangement can prevent the RFID coil 30 and the metal reinforcement sheet 20 from interfering with the wireless charging of the smart terminal, and also prevent 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 2510MHz~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 the RFID chip 40 with a frequency within the range of 10MHz~15MHz, on the one hand, the protective shell 100 of the electronic product 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 selectively turned on, 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 inner groove 10a can be fully utilized to ensure the installation of the RFID chip 40, the switch element 50 and other structural parts.

[0067] 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 an electronic product, comprising a shell (10), characterized in that: The housing (10) further comprises a switch structure (15) arranged on the housing (10), the switch structure (15) comprising a reinforcing sheet (20) arranged on the inner wall of the housing (10), a switch element (50) arranged on the outer side of the reinforcing sheet (20), and a signal switching component arranged between the reinforcing sheet (20) and the switch element (50), wherein the signal switching component triggers a signal when the switch element (50) is pressed to a working position; The switch element (50) has an initial position and can reciprocate between the initial position and a working position, and the distance between the initial position and the working position is between 0.05 and 0.5 mm; The reinforcing sheet (20) is used to strengthen the bending resistance of the housing (10) at the switch structure (15), and is used to resist the pressure when the switch element (50) is pressed.

2. The protective case for electronic products according to claim 1, characterized in that: The protective shell of the electronic product is provided with a circuit module, and the circuit module is controlled by the signal switching component; the thickness of the shell (10) does not exceed 1.6 mm; and the distance between the initial position and the working position of the switch element (50) does not exceed 0.3 mm.

3. The protective case for electronic products according to claim 2, characterized in that: The circuit module comprises an RFID coil (30), and an RFID chip corresponding to the RFID coil (30) is arranged in the housing (10) or the switch structure (15).

4. The protective case for electronic products according to claim 1, characterized in that: The inner surface of the shell (10) is provided with an inner groove (10a), and the reinforcing sheet (20) is wholly or partially accommodated in the inner groove (10a); the shell (10) is provided with a switch through hole (10h) connected to the inner groove (10a); the shell (10) forms a clamping portion (10i) at the switch through hole (10h); the switch element (50) is provided with a neck (52a) that is clamped with the clamping portion (10i); the dimension of the neck (52a) along the thickness direction of the shell (10) is greater than the thickness of the clamping portion (10i), so that the switch element (50) can reciprocate between the initial position and the working position.

5. The protective case for an electronic product as claimed in claim 4, characterized in that: The switch element (50) comprises a push-type button (51) and a key cap (52) located outside the push-type button (51), and the neck (52a) is arranged on the key cap (52).

6. The protective case for an electronic product as claimed in claim 5, characterized in that: The push-type button (51) is a pot-shaped button, and the outwardly protruding middle portion of the pot-shaped button abuts against the key cap (52).

7. The protective case for an electronic product as claimed in claim 5, characterized in that: The switch structure (15) further comprises a polyester film (70), wherein the polyester film (70) covers the reinforcing sheet (20), the signal switching component and the push-type button (51), and the polyester film (70) is provided with an escape hole at a position corresponding to the push-type button (51).

8. The protective case for an electronic product as claimed in claim 1, characterized in that: The reinforcing sheet (20) and the shell (10) are provided with a positioning structure, the positioning structure comprising a positioning column provided on one of the reinforcing sheet (20) and the shell (10), and a positioning hole provided on the other of the reinforcing sheet (20) and the shell (10).

9. The protective case for an electronic product as claimed in claim 1, characterized in that: The reinforcing sheet (20) is in the shape of a long strip and is fixed to the inner wall of the shell (10) by means of snap connection and / or gluing.

10. The protective case for an electronic product as claimed in claim 1, characterized in that: The signal switching component is in the form of a circuit window, which is formed on a thin-film circuit board and / or an RFID coil, and the circuit window can be closed or maintained open by the switch element (50).

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