An earphone charging case with a display screen and a wireless earphone

Abstract

The utility model relates to the field of earphone technology, and in particular to an earphone charging compartment with a display screen and a wireless earphone, wherein the earphone charging compartment with a display screen comprises a cover body and a charging compartment body; a receiving cavity for receiving earphones is formed between the cover body and the charging compartment body, and the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed; an opening is provided on the cover body, and the opening accommodates a touch display screen; the touch display screen is used for external interaction with the earphone charging compartment; the flexible circuit board connected to the touch display screen passes through the shaft structure and is electrically connected to a control mainboard provided inside the charging compartment body. In the above manner, the operation efficiency and user experience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, and in particular to an earphone charging compartment with a display screen and a wireless earphone. Background Art

[0002] The operation of traditional OWS (Open Wearable Stereo) / TWS (True Wireless Stereo) headphones is to realize function definition by controlling the headphone MFB (Multifunction Button), and the charging box is only used as a device to charge the headphones.

[0003] Existing devices such as mobile phones are required to use all functions of the charging box and earphones. When the connected device cannot be accessed, many functions can only be operated blindly, which makes it very inconvenient for users to operate the earphones. Summary of the invention

[0004] In view of the above-mentioned defects of the prior art, the main purpose of the present invention is to provide an earphone charging case with a display screen and a wireless earphone, so as to realize an earphone charging case and a wireless earphone that are easier to operate.

[0005] In order to solve the above technical problems, the embodiment of the utility model provides an earphone charging compartment with a display screen, comprising: a cover body and a charging compartment body; a receiving cavity for receiving earphones is formed between the cover body and the charging compartment body, the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed;

[0006] The cover body is provided with an opening, and the opening accommodates a touch display screen; the touch display screen is used for external interaction with the earphone charging compartment;

[0007] The flexible circuit board connected to the touch display screen passes through the shaft structure and is electrically connected to the control main board disposed inside the charging compartment body.

[0008] Optionally, the cover body includes a cover shell and a cover inner support; the cover shell is provided with the opening; the cover inner support is snap-fitted into the cover shell, and the cover inner support is used to support the touch display screen.

[0009] Optionally, the touch display screen includes a touch outer screen and a display inner screen; the flexible circuit board is connected to the display inner screen; the display inner screen is glued and fixed in the opening; and the cover shell is arranged on the outside of the display inner screen.

[0010] Optionally, the cover shell is provided with a mounting groove around the opening; the cover shell is snap-fitted into the mounting groove.

[0011] Optionally, a shaft sleeve is provided on the rotating shaft structure; the flexible circuit board passes through the shaft sleeve and is electrically connected to the control main board.

[0012] Optionally, a slot is provided on the shaft sleeve; a portion of the flexible circuit board passing through the shaft sleeve is fixedly disposed in the slot.

[0013] Optionally, limiting members are provided at corresponding positions on both sides of the slot; the limiting members are used to limit the portion of the flexible circuit board passing through the shaft sleeve in the slot.

[0014] Optionally, the limiting member includes a fixed pressure plate; the cover body includes a cover body shell and a cover body inner support; the cover body inner support is snap-fitted into the cover body shell; the fixed ends of the fixed pressure plate are respectively fixed on the cover body shell and the cover body inner support, and the movable end of the fixed pressure plate clamps the flexible circuit board in the direction of the slot when closed.

[0015] Optionally, the charging compartment body includes a conductive member, a rechargeable battery and a charging interface; the conductive member is used to connect the wireless headset accommodated in the accommodating cavity with the rechargeable battery; the rechargeable battery is electrically connected to the control main board; the charging interface is exposed on the surface of the charging compartment body, and the charging interface is electrically connected to the rechargeable battery;

[0016] The touch display screen is also used for external interaction with the headset.

[0017] According to another aspect of the embodiments of the utility model, a wireless headset is further provided, and the wireless headset includes the headset charging compartment with a display screen as described in any of the aforementioned embodiments.

[0018] In the embodiment of the utility model, the earphone charging compartment with a display screen includes a cover body and a charging compartment body; a receiving cavity for receiving earphones is formed between the cover body and the charging compartment body, the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed; an opening is provided on the cover body, and the opening receives a touch display screen; the touch display screen is used to interact with the earphone charging compartment from the outside; the flexible circuit board connected to the touch display screen is electrically connected to the control main board provided inside the charging compartment body through the shaft structure. Thus, different from the existing requirement that the user operates the operating device connected to the earphone to operate the earphone, the embodiment of the utility model provides the user with a faster and more convenient display of the earphone function by setting a touch display screen on the surface of the cover body, so as to satisfy the user's intuitive operation and good visual experience. Without the need to operate the connection device, the user can conveniently use all the functions of the charging compartment and the earphone by interactive operation through the touch display screen. Therefore, the embodiment of the utility model can improve the convenience of operation and user experience of the earphone. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0020] Figure 1 This is an exploded view of the earphone charging compartment with a display screen from a first perspective according to an embodiment of the utility model;

[0021] Figure 2 This is an exploded view of the earphone charging compartment with a display screen from a second perspective of the embodiment of the utility model;

[0022] Figure 3 It is an exploded schematic diagram of the cover of the earphone charging compartment with a display screen according to an embodiment of the utility model;

[0023] Figure 4 It is a schematic cross-sectional structure diagram of the cover body of the earphone charging compartment with a display screen according to an embodiment of the utility model.

[0024] In the above drawings:

[0025] Charging case shell 10, touch outer screen 301, display inner screen 302, flexible circuit board connecting strip 40, control main board 50, cover shell 201, cover inner support 202, opening 2011, installation groove 2012, shaft sleeve 604, rotating shaft 601, hinge 602, rotating shaft base 603, rechargeable battery 70, charging interface 80. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0027] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

[0030] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Related technical description:

[0033] FPC (Flexible Printed Circuit) is a printed circuit that is suitable for MP3, DVD, digital camera, mobile phone medical, automotive and aerospace fields, and has the characteristics of free bending, folding, winding, small size, thinness, free movement and extension.

[0034] TWS earphones are the abbreviation of true wireless earphones, which consist of two independent earplugs and a rechargeable storage box. Currently in life, many people use wireless earphones, but the power of wireless earphones is limited, so they need to be equipped with a charging case to charge the wireless earphones. Therefore, the use of wireless earphone charging cases is increasing.

[0035] Figure 1 A structural diagram of an earphone charging compartment with a display screen in an embodiment of the utility model is shown. Figure 2 It is an exploded view of the earphone charging compartment with a display screen from a second perspective of an embodiment of the utility model.

[0036] like Figure 1 as well as Figure 2 As shown, the earphone charging compartment with a display screen comprises a cover body and a charging compartment body; a receiving cavity for receiving earphones is formed between the cover body and the charging compartment body, and the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed;

[0037] The cover body is provided with an opening 2011, and the opening 2011 accommodates a touch screen; the touch screen is used for external interaction with the earphone charging compartment;

[0038] The flexible circuit board connected to the touch display screen is electrically connected to the control main board 50 arranged inside the charging compartment body through the shaft structure.

[0039] The charging compartment body includes a charging compartment shell 10, and the charging compartment shell 10 is movably connected to a rotating shaft base 603 fixed on the cover body through a rotating shaft 601 and a hinge 602, so that the accommodating cavity is opened or closed when the rotating shaft structure rotates. Figure 1 as well as Figure 2 As shown, first install the hinge 602 into the holes on both sides of the shaft base 603, and then assemble the cover body inner support 602 on the cover body outer shell 201. During assembly, the hinge 602 must first be inserted into the hinge groove of the cover body inner support 602, and then one end of the rotating shaft 601 is inserted into the shaft base 603, thereby completing the assembly of the upper cover body.

[0040] The flexible circuit board is the control circuit assembly of the touch screen, which is used to power the touch screen and provide control signals. It should be noted that for the convenience of installation, the flexible circuit board and the touch screen can be integrated or detachable, and the embodiment of the utility model does not limit this. Figure 1-2 As shown, the connection row 40 of the flexible circuit board passes through the shaft structure and is electrically connected to the control main board 50 disposed inside the charging compartment body.

[0041] Considering that the size of the earphone charging case is generally small, in order to increase the available interaction area and ensure the user's interactive experience with the touch screen, such as Figure 1-2 As shown, the touch display screen is arranged on the surface of the cover body away from the charging compartment body, rather than on the surface close to the charging compartment body or the surface of the charging compartment body, so that the entire surface of the cover body can be used to set the opening 2011 to accommodate the touch display screen.

[0042] The hollowness of the hinge structure can be a space in the middle of the hinge structure such as a through hole for the flexible circuit board connection row 40 to pass through, so as to facilitate the connection of the flexible circuit board connection row 40 connected to the touch display screen through the hinge structure and then connect it to the control main board 50, thereby realizing the usability of the touch display screen.

[0043] The touch display screen can receive control signals from the control mainboard 50 to display information, thereby providing a more intuitive and convenient headphone interaction experience.

[0044] At the same time, external users can interact with the earphone compartment through the touch display screen, so as to directly control the earphone compartment and / or the earphones contained in the earphone compartment without having to operate an operating device such as a mobile phone to which the earphones are connected.

[0045] Specifically, in order to make the installation of the touch display screen on the cover body more secure, the cover body includes a cover body shell 201 and a cover body inner support 202; the cover body shell 201 is provided with the opening 2011; the cover body inner support 202 is snap-fitted into the cover body shell 201, and the cover body inner support 202 is used to support the touch display screen.

[0046] Figure 3 It is an exploded schematic diagram of the cover of the earphone charging compartment with a display screen according to an embodiment of the present invention. Figure 4 1 is a schematic cross-sectional structure diagram of the cover of the earphone charging compartment with a display screen according to an embodiment of the present invention. Figure 3 as well as Figure 4As shown, the touch screen is first placed in the opening 2011, and then the cover body support 202 is snapped into the cover shell 201. In order to achieve the snapping of the cover shell 201 and the cover body support 202, the corresponding positions of the mutually adjacent surfaces of the cover shell 201 and the cover body are provided with mutually embedded fixing parts.

[0047] When the cover inner support 202 is engaged in the cover outer shell 201, the touch screen is supported in the direction away from the opening 2011, and the part of the touch screen exposed outside the opening 2011 is limited in the space between the cover inner support 202 and the cover outer shell 201, preventing the touch screen from detaching from the opening 2011, thereby ensuring the installation stability of the touch screen.

[0048] Specifically, the touch display screen may be an integrated screen. Optionally, in order to improve the usability of the touch display screen and provide protection for the touch display screen, the touch display screen includes a touch outer screen 301 and a display inner screen 302; Figure 1 to Figure 4 As shown, the flexible circuit board is connected to the display inner screen 302 ; the display inner screen 302 is glued and fixed in the opening 2011 ; and the cover shell 201 is arranged outside the display inner screen 302 .

[0049] In order to prevent the display inner screen 302 from detaching from the opening 2011, the display inner screen 302 is glued and fixed in the opening 2011. At the same time, combined with the supporting function of the cover inner support 202 on the rear side of the opening 2011, the installation stability of the touch display screen is further ensured.

[0050] Specifically, the touch outer screen 301 needs to be powered on, have a touch function, and protect the display inner screen 302 .

[0051] Specifically, in order to ensure and prevent the inner display screen 302 from detaching, the cover shell 201 is provided with a mounting groove 2012 around the opening 2011 ; the cover shell 201 is snap-fitted into the mounting groove 2012 .

[0052] like Figure 3 as well as Figure 4 As shown, the outer surface of the cover shell 201 is dug out to a certain depth around the opening 2011 in the direction close to the opening 2011, and a mounting groove 2012 is formed above the opening 2011. The size of the mounting groove 2012 can be set according to the size of the touch outer screen 301, and correspondingly, the size of the opening 2011 is set according to the size of the display inner screen 302, as shown in FIG. Figure 3 as well as Figure 4As shown, when the size of the touch outer screen 301 is larger than the display inner screen 302, the size of the mounting groove 2012 is larger than the size of the opening 2011. It can be understood that the size of the touch outer screen 301 is larger than the size of the display inner screen 302 to ensure that the touch outer screen 301 fully covers the display inner screen 302.

[0053] Specifically, a shaft sleeve 604 is provided on the rotating shaft structure; the connecting flexible row 40 of the flexible circuit board passes through the shaft sleeve 604 and is electrically connected to the control main board 50 .

[0054] By opening a hollow sleeve 604 on the shaft base 603 connected to the cover shell 201, it is convenient for the connection row 40 of the flexible circuit board to pass through, thereby facilitating the connection row 40 of the flexible circuit board to be connected to the control main board 50 set in the charging compartment body.

[0055] Specifically, a slot is formed on the shaft sleeve 604 ; the portion of the flexible circuit board that passes through the shaft sleeve 604 is fixedly disposed in the slot.

[0056] Considering that the rotating shaft structure may drive the flexible circuit board to move during the rotation process, thereby causing the flexible circuit board to be pulled and / or moved, affecting the normal operation of the flexible circuit board, a slot is provided on the sleeve 604 so that the portion of the flexible circuit board passing through the sleeve 604 is limited and fixed in the slot.

[0057] Specifically, the portion of the flexible circuit board that passes through the shaft sleeve 604 can be glued and fixed in the slot, thereby reducing the influence of the rotation of the shaft structure on the position of the flexible circuit board.

[0058] Furthermore, in order to further ensure the position stability of the flexible circuit board, limiters can be set at corresponding positions on both sides of the slot; the limiters are used to limit the part of the flexible circuit board passing through the shaft sleeve 604 in the slot.

[0059] The limiting member may be a pressing plate extending toward the slot, and is used to press the portion of the flexible circuit board passing through the shaft sleeve 604 into the slot, thereby preventing the possibility that the flexible circuit board is driven by the movement of the rotating shaft structure.

[0060] Taking into account the relative position relationship between the hinge structure and the cover body, and the limited internal space of the earphone compartment, specifically, the limiting member includes a fixed pressure plate; the cover body includes a cover body shell 201 and a cover body inner support 202; the cover body inner support 202 is snap-fitted into the cover body shell 201; the fixed ends of the fixed pressure plate are respectively fixed on the cover body shell 201 and the cover body inner support 202, and the movable end of the fixed pressure plate clamps the connecting soft row 40 of the flexible circuit board in the direction of the slot when closed.

[0061] By providing fixing pressure plates in the cover shell 201 and the cover inner support 202 respectively, the connection row 40 of the flexible circuit board is fixed near the card slot from both upper and lower sides, further ensuring the installation stability and usability of the flexible circuit board.

[0062] It should be noted that the installation of the flexible circuit board can be as follows: first, pass the connecting soft row 40 of the flexible circuit board through the shaft sleeve 604, and then fix the part of the connecting soft row 40 of the flexible circuit board passing through the shaft sleeve 604 in the slot, and then press the fixed pressure plates on the cover body shell 201 and the cover body inner support 202 respectively in the direction of the slot, so as to fix the connecting soft row 40 of the flexible circuit board in the slot, and finally engage the cover body shell 201 and the cover body inner support 202, and connect the cover body obtained after engagement with the charging bin main body through the hinge structure to obtain the installed cover body.

[0063] Furthermore, if Figure 1 as well as Figure 2 As shown, the charging compartment body includes a conductive member, a rechargeable battery 70 and a charging interface 80; the conductive member is used to connect the wireless headset accommodated in the accommodating cavity with the rechargeable battery 70; the rechargeable battery 70 is electrically connected to the control main board 50; the charging interface 80 is exposed on the surface of the charging compartment body, and the charging interface 80 is electrically connected to the rechargeable battery 70;

[0064] The touch display screen is also used for external interaction with the headset.

[0065] Specifically, the control motherboard 50 communicates and controls with the touch display screen through the flexible circuit board, is connected to the earphone through the conductive member, and is connected to the rechargeable battery 70, so that the control motherboard 50 can control the earphone and / or the earphone charging case according to the interactive signal input through the touch display screen, thereby realizing the function of the user using the earphone and the earphone charging case directly through the touch display screen without being able to operate the device to which the earphone is connected.

[0066] In the embodiment of the utility model, the earphone charging compartment with a display screen includes a cover body and a charging compartment body; a receiving cavity for receiving earphones is formed between the cover body and the charging compartment body, the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed; an opening 2011 is provided on the cover body, and the opening 2011 receives a touch display screen; the touch display screen is used to interact with the earphone charging compartment from the outside; the flexible circuit board connected to the touch display screen is electrically connected to the control motherboard 50 provided inside the charging compartment body through the shaft structure. Thus, different from the existing requirement that the user operates the operating device connected to the earphone to operate the earphone, the embodiment of the utility model provides the user with a faster and more convenient display of the earphone function by setting a touch display screen on the surface of the cover body, so as to satisfy the user's intuitive operation and good visual experience. Without the need to operate the connection device, the user can conveniently use all the functions of the charging compartment and the earphone by interactive operation through the touch display screen. Therefore, the embodiment of the utility model can improve the convenience of operation and user experience of the earphone.

[0067] In yet another embodiment of the present invention, a wireless headset is provided, and the wireless headset includes the headset charging compartment with a display screen as described in any of the aforementioned embodiments.

[0068] In the wireless headset provided by the embodiment of the utility model, a headset charging compartment with a display screen is provided, which includes a cover body and a charging compartment body; wherein, a receiving cavity for receiving the headset is formed between the cover body and the charging compartment body, and the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed; an opening 2011 is provided on the cover body, and the opening 2011 receives a touch display screen; the touch display screen is used to interact with the headset charging compartment externally; the flexible circuit board connected to the touch display screen is electrically connected to the control main board 50 provided inside the charging compartment body through the shaft structure. Thus, different from the existing requirement that the user operates the operating device connected to the headset to operate the headset, the embodiment of the utility model provides the user with a faster and more convenient display of the headset function by providing a touch display screen on the surface of the cover body, so as to satisfy the user's intuitive operation and good visual experience. Without the need to operate the connection device, the user can conveniently use all the functions of the charging compartment and the headset by interactive operation through the touch display screen. Therefore, the embodiment of the utility model can improve the operation convenience and user experience of the wireless headset.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An earphone charging compartment with a display screen, characterized in that: The earphone charging compartment with a display screen comprises a cover body and a charging compartment body; a receiving cavity for receiving earphones is formed between the cover body and the charging compartment body, and the cover body is connected to the charging compartment body through a hollow shaft structure, and when the shaft structure rotates, the receiving cavity is opened or closed; The cover body is provided with an opening, and the opening accommodates the touch display screen; the touch display screen is used to interact with the earphone charging compartment externally; the cover body includes a cover body shell and a cover body inner support; the cover body shell is provided with the opening; the cover body inner support is snap-fitted and arranged in the cover body shell, and the cover body inner support is used to support the touch display screen; The flexible circuit board connected to the touch display screen passes through the shaft structure and is electrically connected to a control main board disposed inside the charging compartment body.

2. The earphone charging compartment with a display screen according to claim 1, characterized in that: The touch display screen includes a touch outer screen and a display inner screen; the flexible circuit board is connected to the display inner screen; the display inner screen is glued and fixed in the opening; and the cover shell is arranged outside the display inner screen.

3. The earphone charging compartment with a display screen according to claim 2, characterized in that: The cover shell is provided with a mounting groove around the opening; the cover shell is clamped in the mounting groove.

4. The earphone charging compartment with a display screen according to claim 1, characterized in that: The rotating shaft structure is provided with a shaft sleeve; the flexible circuit board passes through the shaft sleeve and is electrically connected to the control main board.

5. The earphone charging compartment with a display screen according to claim 4, characterized in that: The shaft sleeve is provided with a slot; the portion of the flexible circuit board passing through the shaft sleeve is fixedly arranged in the slot.

6. The earphone charging compartment with a display screen according to claim 5, characterized in that: Limiting members are arranged at corresponding positions on both sides of the slot; the limiting members are used to limit the portion of the flexible circuit board passing through the shaft sleeve in the slot.

7. The earphone charging compartment with a display screen according to claim 6, characterized in that: The limiting member includes a fixed pressure plate; the cover body includes a cover body shell and a cover body inner support; the cover body inner support is snap-fitted into the cover body shell; the fixed ends of the fixed pressure plate are respectively fixedly arranged on the cover body shell and the cover body inner support, and the movable end of the fixed pressure plate clamps the flexible circuit board in the direction of the slot when closed.

8. The earphone charging compartment with a display screen according to claim 1, characterized in that: The charging compartment body comprises a conductive member, a rechargeable battery and a charging interface; the conductive member is used to connect the wireless headset contained in the accommodating cavity with the rechargeable battery; the rechargeable battery is electrically connected to the control main board; the charging interface is exposed on the surface of the charging compartment body, and the charging interface is electrically connected to the rechargeable battery; The touch display screen is also used for external interaction with the headset.

9. A wireless headset, characterized in that: The wireless headset comprises an earphone charging case with a display screen as described in any one of claims 1-8.

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