Earphone equipment

Abstract

The invention discloses earphone equipment, and relates to the technical field of electronic products. The earphone equipment comprises a shell and two earphone modules arranged in the shell, wherein each earphone module comprises an earphone seat and an earphone body; the earphone seat is movably installed in the shell, and a limiting structure is arranged between the earphone body and the earphone seat and limits the earphone body to be separated from the earphone seat. The earphone seat can move between a storage position and an opening position, the earphone body is located inside the shell when the earphone seat is located at the storage position, and the earphone body is located outside the shell when the earphone seat is located at the opening position; and the earphone seat can leave the storage position or the opening position under the action of the pressing force. According to the earphone equipment, the earphone can be taken and placed in a pressing mode, and operation is convenient. When the earphone body needs to be taken and placed, the earphone seat slides relative to the shell, and the earphone seat is not easy to collide and is not easy to damage due to collision when the earphone body is taken and placed; and the limiting structure can prevent the earphone body from being lost when the earphone seat slides outwards.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic products, and in particular to a headphone device. Background Art

[0002] At present, more and more users prefer to use wireless headphones. TWS headphones are a type of wireless headphones. TWS headphones refer to true wireless stereo headphones (True Wi re less Stereo). There is no wire connection between the left and right earphones of TWS wireless headphones, which is more convenient to use.

[0003] TWS earphone devices generally include an earphone box and an earphone body. The earphone body is stored in the earphone box when not in use, and is taken out of the charging box when in use. In the related art, the earphone box of TWS earphone devices is generally a clamshell structure. When taking and placing the earphone body, the box cover is opened or closed by flipping. However, the box cover and the box body of the clamshell earphone box are generally connected by a hinge. If the box cover is hit when it is open, the hinge is easy to break, causing damage to the earphone box. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide an earphone device, in which the earphone module can be retracted or ejected by pressing, and is not easily damaged.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A headphone device, comprising:

[0007] housing; and,

[0008] An earphone module, the earphone module comprising an earphone seat and an earphone body placed on the earphone seat; the earphone seat is movably installed inside the shell, a limiting structure is provided between the earphone body and the earphone seat, and the limiting structure is used to keep the earphone body on the earphone seat; the earphone seat can move between a storage position and an open position, the earphone body is located inside the shell when the earphone seat is located at the storage position, and the earphone body is located outside the shell when the earphone seat is located at the open position;

[0009] The earphone seat can leave the storage position or the open position under the action of pressing force.

[0010] Optionally, the limiting structure is a magnetic attraction component; the magnetic attraction component includes a first magnetic component and a second magnetic component, the first magnetic component is arranged on the earphone body, and the second magnetic component is arranged on the earphone socket; the earphone body can be adsorbed on the earphone socket under the action of the magnetic attraction component.

[0011] Optionally, the interior of the shell forms an inner cavity, and the end of the shell forms a shell opening;

[0012] The earphone device includes a middle frame, the middle frame and the earphone seat are arranged in the inner cavity, and the earphone seat is slidably connected to the middle frame or the outer shell; an elastic member is arranged between the earphone seat and the middle frame, and the earphone seat has a tendency to move toward the shell opening under the elastic force of the elastic member.

[0013] Optionally, the earphone body includes a first body portion, and the first body portion is provided with a first electrical contact; the earphone device includes a battery; a first bracket is provided on a side of the middle frame close to the shell opening, and the first bracket is provided with a second electrical contact;

[0014] The second electrical contact is electrically connected to the battery; the first body is embedded in the first bracket, and the second electrical contact is electrically connected to the first electrical contact.

[0015] Optionally, the earphone module includes an electrical connector and a pressing piece;

[0016] The electrical connector and the pressing plate are arranged on a side of the earphone socket away from the earphone body; the pressing plate presses the electrical connector onto the earphone socket, and the pressing plate is connected to the earphone socket; one end of the electrical connector is connected to the second electrical contact, and the other end is connected to the battery.

[0017] Optionally, a first mounting portion is provided on a side of the pressing sheet close to the middle frame, a second mounting portion is provided on a side of the middle frame close to the pressing sheet, and two ends of the elastic member are respectively mounted on the first mounting portion and the second mounting portion.

[0018] Optionally, the earphone seat includes a first seat body and a second seat body extending from the first seat body in a direction away from the shell opening; the second seat body is slidably connected to the middle frame;

[0019] A locking piece is arranged between the second seat body and the middle frame; when the locking piece is in a locked state, the locking piece restricts the headphone seat from moving toward the direction of the shell opening; when the locking piece is in an unlocked state, the headphone seat can move toward the direction of the shell opening under the action of the elastic piece; the locking piece can switch between the locked state and the unlocked state when the second seat body moves away from the shell opening.

[0020] Optionally, the second seat body is provided with a guide groove; the locking member is a locking rod, one end of which is mounted on the middle frame, and the other end is inserted into the guide groove; the guide groove comprises a locking groove, a first guide groove, and a second guide groove which are connected in sequence;

[0021] The first guide groove extends from the locking groove in a direction away from the shell opening, the first part of the second guide groove extends from the first guide groove in a direction away from the shell opening, and the second part extends from the first part in a direction close to the shell opening;

[0022] When the earphone seat is located at the storage position, the locking rod is stuck in the locking groove; when the earphone seat is located at the open position, the locking rod is located in the second guide groove.

[0023] Optionally, it also includes an elastic pressing piece, which is connected to the middle frame or the outer shell; the elastic pressing piece is pressed on the side of the locking rod away from the second seat body; the elastic pressing piece is used to limit the locking rod from escaping from the guide groove.

[0024] Optionally, the earphone device comprises two earphone sockets;

[0025] The middle frame is provided with two seat grooves at intervals, and the two earphone seats are respectively provided in the two seat grooves; a plurality of sealing rings are provided at intervals between the outer wall of the earphone seat and the seat grooves;

[0026] The middle frame is further provided with a receiving groove, and the receiving groove is formed between the two seat grooves. The earphone device includes a battery, and the battery is arranged in the receiving groove.

[0027] Optionally, the earphone device further includes a display screen, the housing is provided with a screen opening, and the display screen is arranged in the screen opening.

[0028] Optionally, the earphone device further includes a circuit mainboard, a charging connector and buttons;

[0029] The circuit main board is arranged between the middle frame and the outer shell, and a waterproof seal is arranged between the circuit main board and the middle frame; the outer shell is provided with a charging opening, the charging connector is inserted into the charging opening, and a waterproof seal is arranged between the charging connector and the charging opening; the outer shell is provided with a push opening, the button is inserted into the push opening, and a waterproof seal is arranged between the button and the push opening.

[0030] Optionally, the shell is a transparent shell; the earphone device comprises a first shielding sheet and a second shielding sheet arranged between the shell and the middle frame;

[0031] The earphone modules are respectively arranged on both sides of the middle frame in the x direction, and the first shielding sheet and the second shielding sheet are respectively arranged on both sides of the middle frame in the y direction; a shielding gap is formed between the first shielding sheet and the middle frame, and between the second shielding sheet and the middle frame.

[0032] The beneficial effects of the present invention are as follows: the earphone device provides a new way of taking and placing the earphone, and the earphone body can be taken out by pressing, and can also be put back by pressing, and the earphone body can be taken out and placed conveniently and interestingly.

[0033] When the earphone body needs to be taken out, the earphone seat slides relative to the shell, and the earphone seat is not easily hit when the earphone body is taken out, reducing the risk of damage. In addition, a limit structure is set between the earphone body and the earphone seat to prevent the earphone body from being lost when the earphone seat is pressed and slides out. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0035] Figure 1 This is one of the overall structural schematic diagrams of the earphone device according to an embodiment of the present invention (the earphone seat is located in the storage position in the figure);

[0036] Figure 2 The second schematic diagram of the overall structure of the earphone device according to the embodiment of the present invention (the earphone seat is in the open position in the figure);

[0037] Figure 3 A schematic diagram of taking the earphone body out of the earphone seat when the earphone seat of the earphone device according to the embodiment of the present invention is in the open position;

[0038] Figure 4 This is a structural exploded diagram of the earphone device according to an embodiment of the present invention;

[0039] Figure 5 This is an exploded view of the earphone module structure according to an embodiment of the present invention from one angle;

[0040] Figure 6 Another angle of the exploded view of the earphone module structure according to the embodiment of the present invention;

[0041] Figure 7 is one of the cross-sectional views of the earphone device according to the embodiment of the present invention;

[0042] Figure 8 This is a second cross-sectional view of the earphone device according to an embodiment of the present invention;

[0043] Fig. 9 for Figure 8 Enlarged view of part A in the middle;

[0044] Fig.10 This is one of the internal structure diagrams of the earphone device according to the embodiment of the present invention;

[0045] Fig.11 The second schematic diagram of the internal structure of the earphone device according to the embodiment of the present invention (the earphone seat is located in the storage position in the figure);

[0046] Fig.12 for Fig.11 Enlarged view of middle part B;

[0047] Fig.13 The second schematic diagram of the internal structure of the earphone device according to the embodiment of the present invention (the earphone seat is in the open position in the figure);

[0048] Fig.14 This is the second structural exploded view of the earphone device according to the embodiment of the present invention;

[0049] Fig.15 The third internal structure diagram of the earphone device according to the embodiment of the present invention;

[0050] Fig.16 A schematic diagram showing that a user simultaneously unlocks and opens the earphone sockets at both ends of the earphone device, causing the two earphone bodies to be simultaneously ejected from the housing;

[0051] Fig.17 The fourth internal structure diagram of the earphone device according to the embodiment of the present invention (in the figure, both earphone sockets are located in the storage position);

[0052] Fig.18 for Fig.17 Enlarged view of part C in .

[0053] In the figure: 10, shell; 12, shell opening; 20, earphone module; 21, earphone seat; 2101, first seat body; 2102, second seat body; 211, first bracket; 212, second bracket; 213, guide groove; 2131, locking groove; 2132, first guide groove; 2133, second guide groove; 2134, step; 22, earphone body; 221, first body part; 222, second body part; 223, ear clamping recess; 231, first electrical contact; 232, second electrical contact; 24, electrical terminal board ; 25. Electrical connector; 26. Pressing piece; 261. First mounting portion; 30. Middle frame; 31. Second mounting portion; 321. Seat groove; 322. Accommodating groove; 33. Rod hole; 34. Frame limit block; 41. Elastic member; 42. Locking member; 43. Elastic pressing member; 51. Battery; 52. Circuit board; 53. Charging connector; 54. Button; 55. Display screen; 61. First shielding piece; 62. Second shielding piece; 70. Pressing gap; 80. Waterproof sealing member; 91. First magnetic member; 92. Second magnetic member. DETAILED DESCRIPTION

[0054] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "fixed" 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 the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0057] Wireless earphone devices generally include an earphone box and an earphone body. In the related art, the earphone box of the earphone device is generally a flip-top earphone box, the box cover is hinged to the box body through a hinge shaft, and the earphone body can be put back into the box body or taken out of the box body when the cover is opened. However, if the box cover is accidentally bumped when it is open, the hinge shaft is easily deformed or even broken, causing damage to the earphone box. In addition, the opening method of the flip-top earphone box is relatively unoriginal, and the playability and fun are low.

[0058] Based on this, the present invention provides an earphone device, which provides a new way to take and place the earphone, and the earphone can be taken and placed in a PUSH-PUSH manner. When the earphone body 22 needs to be taken and placed, the earphone seat 21 slides relative to the housing 10, and the earphone seat 21 is not easily hit when the earphone body 22 is taken and placed, and is not easily damaged by the collision. In addition, a limiting structure is provided between the earphone body 22 and the earphone seat 21 to ensure that the earphone body 22 is kept on the earphone seat 21 before the earphone body 22 is taken out, so as to avoid the earphone body 22 being lost when the earphone seat 21 is pressed and slides outward. At the same time, the earphone taking and placing operation of the earphone device of the present invention is novel and playable.

[0059] Please refer to Figures 1 to 14 , the headphone device is described in detail below.

[0060] The earphone device includes an earphone box and two earphone modules 20 . The earphone box includes a shell 10 and a middle frame 30 .

[0061] The interior of the shell 10 forms an inner cavity, and the opposite ends of the shell 10 form shell openings 12, and the shell openings 12 connect the interior of the shell 10 with the external environment. Two earphone modules 20 are arranged in the inner cavity, and the earphone module 20 includes an earphone seat 21 and an earphone body 22. The earphone seat 21 is slidably installed inside the shell 10, and the earphone body 22 is placed on the earphone seat 21, and the earphone seat 21 is used to support the earphone body 22. A limiting structure is set between the earphone body 22 and the earphone seat 21. When the earphone body 22 is placed on the earphone seat 21, the limiting structure is used to keep the earphone body 22 on the earphone seat 21, thereby reducing the risk of the earphone body 22 accidentally falling out of the earphone seat 21.

[0062] The earphone seat 21 has a storage position and an open position, and the earphone seat 21 can slide between the storage position and the open position. Figure 1 , Figures 7 to 9 In the embodiment, the earphone seat 21 is located at the storage position. At this time, the earphone body 22 is located inside the housing 10, so that the earphone body 22 is stored. Figure 2 In the embodiment, the earphone socket 21 is in the open position, at this time, at least part of the earphone body 22 extends out of the housing 10 through the shell opening 12, so that the user can grasp the earphone body 22 and remove the earphone body 22 from the earphone socket 21 for use. Figure 3 FIG. 4 shows the state where the earphone bodies 22 at both ends of the earphone device are taken out.

[0063] The earphone socket 21 can leave the storage position under the action of pressing force, and can also leave the open position under the action of pressing force. That is, when the earphone body 22 needs to be taken out or put back, the operation is performed by pressing the earphone module 20 inward for a certain distance.

[0064] The earphone device of the present invention can take out and put back the earphone body 22 by pressing, and this method of taking and putting the earphone is convenient to operate. In addition, by providing a limit structure between the earphone seat 21 and the earphone body 22, when the earphone seat 21 is in the open position but the user has not taken out the earphone body 22, the earphone body 22 is placed in a position where it is placed to prevent it from accidentally falling, thereby taking into account the convenience and fun of the earphone taking and putting operation, and reducing the risk of losing the earphone body 22.

[0065] Figures 5 to 7 In the embodiment, the limiting structure is a magnetic component, and the magnetic component includes a first magnetic part 91 and a second magnetic part 92. The first magnetic part 91 is arranged on the earphone body 22, and the second magnetic part 92 is arranged on the earphone seat 21; the earphone body 22 can be adsorbed on the earphone seat 21 under the action of the magnetic component. Among them, the first magnetic part 91 and the second magnetic part 92 can both be magnets, or one of them can be a magnet and the other can be a magnetic metal that can be adsorbed by a magnet, as long as the first magnetic part 91 and the second magnetic part 92 are close to each other, the earphone body 22 can be adsorbed on the earphone seat 21. The magnetic component is used as a limiting structure to facilitate the removal and placement of the earphone body 22.

[0066] In other embodiments, the limiting structure may be an elastic buckle, a nylon hook and loop buckle, etc., provided on the earphone socket 21 , as long as the earphone body 22 can be kept on the earphone socket 21 when the user does not grab the earphone body 22 .

[0067] In order to improve the reliability of the earphone module 20, a first limiting portion and a second limiting portion are provided in the shell 10. The first limiting portion and the second limiting portion respectively limit the outward and inward sliding travels of the earphone socket 21 to limit the earphone socket 21 from sliding between the two extreme positions of the open position and the storage position, thereby preventing the earphone socket 21 from falling off and being lost from the shell 10.

[0068] When the user needs to use the earphone body 22, the user presses the earphone body 22 from the shell opening 12, thereby pressing the earphone seat 21, and the earphone seat 21 moves from the storage position to the open position, and the earphone body 22 is pushed to the outside of the housing 10 by the earphone seat 21. When the earphone seat 21 is in the open position, the earphone seat 21 is still stored in the housing 10, and at least a part of the earphone body 22 protrudes from the housing 10. The user can grasp this protruding part to take the earphone body 22 out of the earphone seat 21. In this way, when the earphone seat 21 is in the open position, the earphone body 22 can be taken out, but the earphone seat 21 is in the housing 10. Even if an object accidentally hits the earphone device, it will not directly hit the earphone seat 21, and the earphone seat 21 will not be damaged. The press-to-pop-out and press-to-retract functions of the earphone seat 21 are highly reliable and not prone to failure. Since a magnetic component is provided between the earphone body 22 and the earphone socket 21 , when the earphone socket 21 does not extend out of the housing 10 and only the earphone body 22 extends out of the housing 10 , the earphone body 22 can also remain adsorbed on the earphone socket 21 and will not be lost.

[0069] Please refer to Figure 3 The earphone body 22 is an ear-clip Bluetooth earphone, also known as an earmuff earphone. The earphone body 22 includes a first body part 221 and a second body part 222. The sound playing component is arranged inside the first body part 221, and the first body part 221 is provided with a sound outlet. Figure 3 The middle earphone body 22 is in an ear-clamping usage state. In this state, the first body part 221 and the second body part 222 are in an angled state, and an ear-clamping recess 223 for clamping the auricle is formed between the first body part 221 and the second body part 222. At this time, the earphone body 22 can be clamped on the ear with the sound outlet of the first body part 221 close to the ear canal. The earphone body 22 is suitable for open earphone usage scenarios.

[0070] It is understandable that when the earphone body 22 is a clip-on Bluetooth earphone, Figure 2 When the earphone holder 21 is in the open state, the earphone holder 21 is still stored in the housing 10, at least a part of the earphone body 22 extends out of the housing 10, and the ear clip recess 223 of the earphone body 22 is exposed outside the housing 10. At this time, the ear clip recess 223 provides a position for the user's fingers to grasp the earphone body 22. In this way, when the earphone device of the present invention is used, the user can not only eject the earphone body 22 by pressing, but also conveniently grasp and take out the earphone body 22, and the earphone holder 21 will not be exposed to avoid accidental collision and damage of the earphone holder 21 when taking out the earphone body 22. The earphone device of the present invention is easy to use.

[0071] It should be noted that the earphone body 22 is an ear-clip Bluetooth earphone. The earphone body 22 can also have a straightened use state, and the second body part 222 can be straightened to facilitate the in-ear use of the earphone body 22.

[0072] Of course, in other embodiments, the earphone body 22 may also be other types of wireless earphones.

[0073] Please refer to Figure 4 , Figures 7 to 9 The middle frame 30 and the earphone socket 21 are both arranged in the inner cavity of the outer shell 10. The middle frame 30 is connected to the outer shell 10 by fastening with fasteners, snapping with connectors, gluing, welding, etc., and the earphone socket 21 is slidably connected to the middle frame 30.

[0074] Optionally, the housing 10 includes a first housing and a second housing, and the middle frame 30, the earphone socket 21 and other internal components are first installed in the first housing, and then the second housing cover is installed in the first housing, which is simple and convenient to assemble. In other embodiments, the middle frame 30 can also be integrally formed with the housing 10. In other embodiments, the earphone socket 21 can also be slidably connected to the housing 10.

[0075] Please refer to Figure 5 , Figure 7 , Figure 8 An elastic member 41 is disposed between the earphone holder 21 and the middle frame 30. The earphone holder 21 has a tendency to move toward the shell opening 12 under the elastic force of the elastic member 41. In this way, the earphone holder 21 can automatically slide to the open position after being pressed to leave the storage position. Figure 4 , Figures 8 to 13 A locking member 42 is further provided between the earphone holder 21 and the middle frame 30. When the locking member 42 is in a locked state, the earphone holder 21 overcomes the elastic force and remains in the storage position.

[0076] Please continue to refer to Figure 3 , Figure 4 A first bracket 211 is provided on one side of the earphone seat 21 close to the shell opening 12. When the earphone body 22 is placed on the earphone seat 21, at least a portion of the first body portion 221 of the earphone body 22 is embedded in the first bracket 211. The provision of the bracket can limit the position of the earphone body 22 when the earphone body 22 is stored, so that the earphone body 22 can be stored more stably.

[0077] In order to charge the earphone body 22, a battery 51 is arranged in the earphone box, a first electrical contact 231 is arranged in the first body part 221, and a second electrical contact 232 is arranged in the first bracket 211. The second electrical contact 232 is electrically connected to the battery 51. When the first body part 221 is embedded in the first bracket 211, the first electrical contact 231 contacts the second electrical contact 232. The second electrical contact 232 can be, but is not limited to, a charging pin.

[0078] When the earphone body 22 used is a clip-on Bluetooth earphone, a second bracket 212 spaced apart from the first bracket 211 is further provided on the side of the earphone seat 21 close to the shell opening 12 , and a part of the second body portion 222 of the earphone body 22 is embedded in the second bracket 212 .

[0079] Please refer to Figure 5 , Figure 6 , Figure 7 The first magnetic member 91 is arranged in the first main body portion 221, and the second magnetic member 92 is arranged at a position corresponding to the first bracket 211. In this way, when the first main body portion 221 is embedded in the first bracket 211, not only charging can be achieved, but also the first main body portion 221 can be adsorbed in the first bracket 211, while preventing the earphone body 22 from being lost, the contact stability between the electrical contacts is taken into account to ensure stable charging.

[0080] Figure 5 , Figure 6 The structure of the earphone module 20 is shown in FIG. Figures 7 to 9 FIG. 2 shows the matching modes of the earphone module 20 and the housing 10, and the earphone module 20 and the middle frame 30. Figures 5 to 9 The earphone module 20 also includes an electrical connector 25 and a pressing piece 26. The electrical connector 25 and the pressing piece 26 are both arranged on the side of the earphone seat 21 away from the shell opening 12 (i.e., away from the earphone body 22). The pressing piece 26 presses the electrical connector 25 to the earphone seat 21, and the pressing piece 26 is connected to the earphone seat 21. Among them, the connection method between the pressing piece 26 and the earphone seat 21 can be but not limited to snap-on, fastening with fasteners, welding, pasting, etc. One end of the electrical connector 25 is electrically connected to the second electrical contact 232, and the other end is electrically connected to the battery 51. The electrical connector 25 is mainly used to realize the charging function of the earphone body 22.

[0081] The earphone holder 21 is provided with a mounting hole, and the second electrical contact 232 is installed in the mounting hole. The second electrical contact 232 is exposed from both sides of the earphone holder 21. One end of the second electrical contact 232 is used to contact the first electrical contact 231, and the other end of the second electrical contact 232 is connected to the electrical connector 25. Please refer to Figure 5 , Figure 6 The second electrical contact 232 is a charging pin. The two electrical contacts are fixed on an electrical terminal board 24 . The pressing sheet 26 presses the electrical terminal board 24 against the earphone socket 21 . The electrical terminal board 24 is connected to the electrical connector 25 .

[0082] Please refer to Figure 5 , Figure 7The pressing piece 26 also serves to provide an installation position for the elastic member 41. A first installation portion 261 is provided on the side of the pressing piece 26 close to the middle frame 30, and a second installation portion 31 is provided on the side of the middle frame 30 close to the pressing piece 26. The elastic member 41 is a compression spring, and one end of the elastic member 41 is installed on the first installation portion 261, and the other end is installed on the second installation portion 31. In one embodiment, the first installation portion 261 is an annular flange formed on the side of the pressing piece 26 away from the mounting seat by a processing technology such as stamping, and the second installation portion 31 is a mounting column with a mounting groove formed integrally on the middle frame 30 by injection molding. During assembly, one end of the spring is sleeved in the annular groove formed by the annular flange, and the other end is inserted into the mounting column of the middle frame 30, so as to realize rapid disassembly and assembly of the spring. In addition, the mounting column of the middle frame 30 also serves to limit the travel of the spring.

[0083] In an assembly method of an earphone holder 21 and a middle frame 30:

[0084] Assemble the second electrical contact 232, the electrical terminal board 24 and the electrical connector 25 to form a first assembly;

[0085] Install the spring to the pressing plate 26 to form a second assembly;

[0086] First, place the first component on the earphone seat 21 and pass the second electrical contact 232 through the mounting hole of the earphone seat 21;

[0087] Then, the second component is mounted to the earphone holder 21, and the earphone holder 21 assembly is formed. During this process, the pressing piece 26 presses the electrical terminal board 24 to ensure that the second electrical contact 232 is in a stable position, and the pressing piece 26 presses a portion of the electrical connector 25 close to the second electrical contact 232 to ensure that the electrical connector 25 and the second electrical contact 232 are not easily loosened due to shaking, thereby ensuring charging reliability;

[0088] Next, the earphone socket 21 assembly is assembled to the middle frame 30 . During this process, the other end of the spring is inserted into the mounting column of the middle frame 30 , and the earphone socket 21 is slidably connected to the middle frame 30 .

[0089] The earphone device of the present invention has a compact structure between the earphone socket 21 and the middle frame 30, and the assembly process is convenient, simple and fast. The charging function of the earphone body 22 provided by the earphone socket 21 is stable, and the sliding-in and sliding-out functions of the earphone socket 21 are stable.

[0090] In one embodiment, the electrical connector 25 is an FPC, i.e., a flexible printed circuit board. The flexible printed circuit board has stable transmission, a large area, and a thin thickness. The front section of the flexible printed circuit board is easily pressed and fixed by the pressing sheet 26. In other embodiments, the electrical connector 25 may also be a wire. In one embodiment, the length of the electrical connector 25 is greater than the distance between the second electrical contact 232 and the battery 51. In other words, the electrical connector 25 has a certain length reserved to meet the charging connection requirements of the earphone holder 21 in both the pop-up state and the retracted state.

[0091] Please refer to Figures 5 to 7 The first seat body 2101 of the earphone holder 21 includes a first seat portion and a second seat portion. The first seat portion is provided with a first bracket 211, and the second seat portion is provided with a second bracket 212. The first bracket 211 and the second bracket 212 are used to accommodate different parts of the earphone body 22. The second magnetic member 92 is provided on the side of the first seat portion away from the earphone body 22, and the elastic member 41 is provided on the side of the second seat portion away from the earphone body 22. This layout is more compact. While realizing the functions of pressing to eject and pressing to retract the earphone holder 21, and realizing the magnetic suction anti-lost function of the earphone holder 21 to the earphone body 22, the overall small volume design of the earphone device is taken into consideration, which is easy to carry. Of course, in other embodiments, the second magnetic member 92 and the elastic member 41 can also be arranged in other positions, and the earphone holder 21 can also be provided with only one bracket.

[0092] Please refer to Figure 5 , Figure 6 The earphone holder 21 includes a first seat body 2101 and a second seat body 2102 connected to each other, and the second seat body 2102 is arranged on the side of the first seat body 2101 away from the shell opening 12. The first seat body 2101 is used to place the earphone body 22, and is also used to install the elastic member 41, the second electrical contact 232 and other components. The second seat body 2102 is used to be slidably connected with the middle frame 30 or the shell 10, and the locking member 42 for keeping the earphone holder 21 in the storage position is arranged between the second seat body 2102 and the middle frame 30. Figures 8 to 13 FIG. 2 shows the sliding cooperation between the second seat body 2102 and the middle frame 30 , and also shows the arrangement of the locking member 42 .

[0093] Figure 8 , Fig. 9 , Fig.11 , Fig.12 When the locking member 42 is in the locked state, the earphone holder 21 is restricted from moving toward the shell opening 12 , so that the earphone holder 21 overcomes the elastic force of the elastic member 41 and is maintained in the storage position. Fig.13 In the embodiment, the locking member 42 is in an unlocked state. At this time, the earphone holder 21 can move toward the shell opening 12 under the action of the elastic member 41, so that the earphone holder 21 can automatically pop up to the open position, thereby exposing the earphone body 22.

[0094] The headphone device is configured as follows: by pressing the headphone body 22 inward, the headphone seat 21 can be moved inward, and the locking member 42 can be switched from a locked state to an unlocked state, or from an unlocked state to a locked state. In this way, when the headphone body 22 needs to be taken out, the headphone module 20 can be pressed to unlock the locking member 42 and pop out the headphone module 20; when the headphone body 22 needs to be stored, the headphone module 20 can be pressed to retract the headphone seat 21 and lock it again by the locking member 42. The user can take and put the headphone by pressing inward, which is convenient and simple to operate and interesting.

[0095] Please refer to Figures 8 to 13 The following is a configuration method of the locking member 42 to achieve the pressing to take out the earphone and the pressing to put the earphone away:

[0096] Reference Figure 6 A guide groove 213 is provided on one side of the second seat body 2102, and the guide groove 213 includes a locking groove 2131, a first guide groove 2132, and a second guide groove 2133 which are connected in sequence. Figure 8 , Fig. 9 The locking member 42 is a locking rod, one end of which is mounted on the middle frame 30 and fixed relative to the middle frame 30, and the other end of which is inserted into the guide groove 213. Fig.11 , Fig.12 A rod hole 33 is provided on the middle frame 30 , one end of the locking rod is inserted into the rod hole 33 of the middle frame 30 , and the locking rod can rotate relative to the middle frame 30 .

[0097] The guide groove 213 is configured such that the locking rod can only slide in the guide groove 213 in the forward direction, and cannot slide in the guide groove 213 in the reverse direction. The locking rod can slide into the locking groove 2131, the first guide groove 2132, the second guide groove 2133, and the locking groove 2131 in sequence. A step 2134 is provided between the locking groove 2131 and the first guide groove 2132, between the first guide groove 2132 and the second guide groove 2133, and between the second guide groove 2133 and the locking groove 2131, so as to restrict the locking rod from entering the locking groove 2131 from the first guide groove 2132, from entering the second guide groove 2133 from the locking groove 2131, and from entering the first guide groove 2132 from the second guide groove 2133.

[0098] Reference Figure 5 , Figures 11 to 13 The first guide groove 2132 extends from the locking groove 2131 in a direction away from the shell opening 12, the first portion of the second guide groove 2133 extends from the first guide groove 2132 in a direction away from the shell opening 12, and the second portion extends from the first portion in a direction close to the shell opening 12. When the earphone holder 21 is in the storage position, the locking rod is stuck in the locking groove 2131; when the earphone holder 21 is in the open position, the locking rod is located in the second guide groove 2133.

[0099] Figure 8 , Fig. 9 , Fig.13 In the embodiment, the locking rod is in a locked state. At this time, the locking rod is stuck in the locking groove 2131. The locking rod abuts against the groove side wall of the locking groove 2131 facing the shell opening 12. The locking rod restricts the earphone seat 21 from moving in the direction of the shell opening 12, so that the earphone seat 21 overcomes the elastic force and remains in the storage position. When the user presses the earphone module 20 inward, the earphone seat 21 moves inward, and the locking rod slides from the locking groove 2131 into the first guide groove 2132. When the user's finger leaves the earphone module 20, the earphone seat 21 moves outward under the action of the elastic force, and the locking rod slides from the first guide groove 2132 into the second guide groove 2133. Fig.13 As shown, the locking rod is located in the second guide groove 2133, and the earphone seat 21 is in the open position, and a portion of the earphone body 22 extends out of the housing 10. When the user presses the earphone module 20 again, the earphone seat 21 moves inward, and the locking rod slides from the second guide groove 2133 into the locking groove 2131, thereby locking the earphone seat 21 again.

[0100] In one embodiment, both ends of the locking rod are bent toward the same side, and after bending, one end is inserted into the rod hole 33 of the middle frame 30, and the other end is inserted into the guide groove 213. In other embodiments, the locking rod may also be arc-shaped or have other structures.

[0101] Please continue to refer to Figure 4 In order to prevent the locking rod from falling out of the guide groove 213 and thus avoid failure of the function of pressing and placing the earphone body 22 , the earphone device further includes an elastic pressing member 43 . Fig.10 The figure shows the setting mode of the elastic pressing member 43. The elastic pressing member 43 is assembled on the middle frame 30 by snapping or other means. The spring sheet of the elastic pressing member 43 presses on the side of the locking rod away from the bottom wall of the guide groove 213. On the basis of not affecting the sliding cooperation between the earphone seat 21 and the locking rod, the locking rod is restricted from escaping from the notch of the guide groove 213, ensuring that the locking rod can keep the earphone seat 21 in the open position. The locking rod is limited by a pressing member with a certain elasticity to avoid excessive friction between the locking rod and the earphone seat 21 caused by over-pressing the locking rod, and to avoid affecting the smoothness of the earphone seat 21 being pressed to eject and retracted.

[0102] Please refer to Figure 5 , Figure 6 The second base 2102 is smaller in width than the first base 2101. The second base 2102 is connected to the middle of the first base 2101. Cables can be routed or other components can be installed on both sides of the second base 2102. In other embodiments, the width of the second base 2102 can also be consistent with that of the first base 2101.

[0103] Please refer to Figure 5 , Figure 6 , Fig.11 , Fig.12 The second seat body 2102 is provided with a seat limit block, and the middle frame 30 is provided with a frame limit block 34. The frame limit block 34 is located on the side of the seat limit block close to the shell opening 12. When the frame limit block 34 abuts against the seat limit block, the earphone seat 21 is restricted from sliding outward, thereby keeping the earphone seat 21 in the shell 10.

[0104] Please refer to Figures 1 to 4 The headphone device includes a display screen 55 and a circuit main board 52. The display screen 55 is installed on the front of the housing 10 or other positions, and the display screen 55 is electrically connected to the circuit main board 52. The display screen 55 can display information such as the battery level of the headphone, and can also be used to play pictures, videos, etc. The housing 10 is provided with a screen opening, and the display screen 55 is provided in the screen opening. The headphone device equipped with the display screen 55 is an audio-visual device with more comprehensive functions. In other embodiments, the display screen 55 may not be provided, and a pure headphone box may be made.

[0105] The earphone device includes a charging connector 53, and the housing 10 is provided with a charging opening. The charging connector 53 is inserted into the charging opening. The charging connector 53 may be a type-C, POGO pin, etc. A waterproof seal 80 is provided between the charging connector 53 and the charging opening to enhance the waterproof effect. The waterproof seal 80 may be, but is not limited to, a soft rubber sleeve. The charging connector 53 is electrically connected to the battery 51. In other embodiments, wireless charging may also be adopted.

[0106] The earphone device includes a button 54, which is electrically connected to the circuit board 52. The housing 10 is provided with a push opening, and the button 54 is inserted into the push opening. A waterproof seal 80 is provided between the button 54 and the push opening to enhance the waterproof effect. The waterproof seal 80 can be, but is not limited to, waterproof foam. In other embodiments, the button 54 may not be provided.

[0107] The circuit board 52 is disposed between the middle frame 30 and the housing 10, and a waterproof seal 80 is disposed between the circuit board 52 and the middle frame 30 to enhance the waterproof effect. The waterproof seal 80 may be, but is not limited to, a full circle of waterproof foam.

[0108] Please refer to Figure 4 The middle frame 30 is provided with two seat grooves 321 at intervals, and the two earphone seats 21 are respectively arranged in the two seat grooves 321; a plurality of sealing rings are arranged between the outer wall of the earphone seat 21 and the seat groove 321 at intervals to enhance the waterproof effect.

[0109] Please refer to Figure 4The middle frame 30 is also provided with a receiving groove 322, which is formed between the two seat grooves 321. The earphone device includes a battery 51, which is arranged in the receiving groove 322. The receiving groove 322 is arranged between the left and right seat grooves 321, so that the battery 51 is accommodated between the left and right earphone modules 20, and the charging of the earphone bodies 22 on both sides is taken into consideration. A display screen 55 can also be arranged above the middle frame 30, and a circuit board 52 can be arranged below the middle frame 30. The layout is reasonable, the structure is compact, the wiring is more convenient, and the power supply of the battery 51 to the display screen 55 is taken into consideration.

[0110] Please continue to refer to Fig.14 The housing 10 is a transparent housing. The housing 10 is made of transparent material, so that the internal electrical structure can be clearly seen, which increases the sense of technology of the product. The earphone device includes a first shielding piece 61 and a second shielding piece 62 arranged between the housing 10 and the middle frame 30. The first shielding piece 61 and the second shielding piece 62 are opaque structures. The first shielding piece 61 and the second shielding piece 62 are arranged on opposite sides of the middle frame 30. A shielding gap is formed between the first shielding piece 61 and the middle frame 30, and between the second shielding piece 62 and the middle frame 30. Messy parts such as wires and antennas can be arranged in the shielding gap. The setting of the shielding piece can cover the messy parts inside. When the housing 10 is transparent, the entire earphone device is more beautiful.

[0111] In one embodiment, the earphone modules 20 are respectively disposed on both sides of the middle frame 30x, and the first shielding piece 61 and the second shielding piece 62 are respectively disposed on both sides of the middle frame 30y.

[0112] When the headphone device includes multiple headphone sockets 21, in some applications, when the user presses the headphone socket 21, he will first hold the headphone socket 21 in his hand and press one headphone module 20 with his fingers. During the pressing operation, other parts of the palm may accidentally press other headphone modules 20. In this way, multiple headphone sockets 21 may be pressed and unlocked at the same time, and multiple headphone sockets 21 may be opened at the same time, causing multiple headphone bodies 22 to fall out at the same time. For ease of understanding, take the example of a headphone device including two headphone modules 20 arranged on the left and right, each headphone module 20 includes a headphone socket 21 and a headphone body 22. When opening the module, the user may use Fig.16 When holding the earphone device in the above manner, when the user's two fingers touch the earphone modules 20 at both ends at the same time, the two earphone modules 20 are easily pressed by mistake at the same time, causing the two earphone sockets 21 to be unlocked and opened at the same time, causing the two earphone bodies 22 to fall out at the same time.

[0113] In order to prevent the multiple earphone sockets 21 from being pressed and unlocked at the same time due to the user's mistaken operation, thereby preventing the earphone bodies 22 from falling out at the same time, refer to Fig.17 , Fig.18In the headphone device of the present invention, the multiple headphone sockets 21 are configured such that when at least one headphone socket 21 moves to its own unlocking position, another headphone socket 21 is restricted from moving to its own unlocking position. In other words, the multiple headphone sockets 21 include a first headphone socket 21 and a second headphone socket 21, and when the first headphone socket 21 moves to its own unlocking position, the second headphone socket 21 is restricted from moving to its own unlocking position. Through the interlocking design between the headphone sockets 21, the user can only press one headphone socket 21 to the unlocking position at a time, so that only one headphone socket 21 is opened at a time, thereby restricting multiple headphone sockets 21 from being opened at the same time, preventing multiple headphone bodies 22 from being sent out at the same time, and preventing the headphone body 22 from being lost due to user's mistaken pressing. In this way, not only can the headphone socket 21 be opened and the headphone body 22 can be taken out by a simple and interesting pressing method, but the headphone socket 21 can also be prevented from being accidentally opened and the headphone body 22 from being lost at a low cost.

[0114] The interlocking between multiple earphone sockets 21 can be achieved in at least two ways. The first interlocking way is: the two earphone sockets 21 share the press-unlocking stroke, and after one earphone socket 21 enters the press-unlocking stroke, the other earphone socket 21 cannot fully enter the press-unlocking stroke. The second interlocking way is: a linked interlocking piece is set between the two earphone sockets 21, and when one earphone socket 21 moves to its own unlocking position, it drives the interlocking piece to move, so that the interlocking piece blocks the other earphone socket 21 on the stroke of moving to the unlocking position.

[0115] Please refer to the following Figures 6 to 11 , the first interlocking method is explained.

[0116] The interlocking between the earphone sockets 21 is achieved by a common push-to-unlock stroke. The two earphone sockets 21 have their own storage position, unlocking position and opening position. Figures 6 to 8 When both earphone sockets 21 are at their unlocked positions, the gap between the two earphone sockets 21 is the pressing gap 70, and the pressing gap 70 provides the two earphone sockets with a travel from the storage position to the unlocked position. When one earphone socket 21 enters the pressing gap 70, it blocks the path of the other earphone socket 21 to move to its own unlocked position, and the other earphone socket 21 cannot move to its own unlocked position.

[0117] In this way, the pressing gap 70 can only provide a travel of pressing and unlocking of one earphone socket 21, and only after one earphone socket 21 is unlocked and opened, another earphone socket 21 can be unlocked and opened, thereby preventing multiple earphone sockets 21 from being unlocked by pressing and opening at the same time. Compared with the second interlocking method, the first interlocking method reduces the number of parts, has a simpler structure, and is low in cost.

[0118] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0119] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0120] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0121] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A headphone device, characterized in that: include: Housing (10); as well as, An earphone module (20), the earphone module (20) comprising an earphone seat (21) and an earphone body (22) placed on the earphone seat (21); the earphone seat (21) is movably mounted inside the housing (10), a limiting structure is provided between the earphone body (22) and the earphone seat (21), the limiting structure is used to keep the earphone body (22) on the earphone seat (21); the earphone seat (21) is movable between a storage position and an open position, the earphone body (22) is located inside the housing (10) when the earphone seat (21) is located at the storage position, and the earphone body (22) is located outside the housing (10) when the earphone seat (21) is located at the open position; The earphone seat (21) can leave the storage position or the open position under the action of pressing force.

2. The headphone device according to claim 1, characterized in that: The limiting structure is a magnetic attraction component; the magnetic attraction component comprises a first magnetic component (91) and a second magnetic component (92), the first magnetic component (91) is arranged on the earphone body (22), and the second magnetic component (92) is arranged on the earphone seat (21); the earphone body (22) can be adsorbed on the earphone seat (21) under the action of the magnetic attraction component.

3. The headphone device according to claim 1, characterized in that: The interior of the outer shell (10) forms an inner cavity, and the end of the outer shell (10) forms a shell opening (12); The earphone device comprises a middle frame (30), wherein the middle frame (30) and the earphone seat (21) are arranged in the inner cavity, and the earphone seat (21) is slidably connected to the middle frame (30) or the outer shell (10); an elastic member (41) is arranged between the earphone seat (21) and the middle frame (30), and the earphone seat (21) has a tendency to move toward the shell opening (12) under the elastic force of the elastic member (41).

4. The headphone device according to claim 3, characterized in that: The earphone body (22) comprises a first body portion (221), and the first body portion (221) is provided with a first electrical contact (231); the earphone device comprises a battery (51); a first bracket (211) is provided on a side of the middle frame (30) close to the shell opening (12), and the first bracket (211) is provided with a second electrical contact (232); The second electrical contact (232) is electrically connected to the battery (51); the first body portion (221) is embedded in the first bracket (211), and the second electrical contact (232) is in electrical contact with the first electrical contact (231).

5. The headphone device according to claim 4, characterized in that: The earphone module (20) comprises an electrical connector (25) and a pressing sheet (26); The electrical connector (25) and the pressing plate (26) are arranged on a side of the earphone seat (21) facing away from the earphone body (22); the pressing plate (26) presses the electrical connector (25) onto the earphone seat (21), and the pressing plate (26) is connected to the earphone seat (21); one end of the electrical connector (25) is connected to the second electrical contact (232), and the other end is connected to the battery (51).

6. The headphone device according to claim 5, characterized in that: A first mounting portion (261) is provided on a side of the pressing plate (26) close to the middle frame (30), a second mounting portion (31) is provided on a side of the middle frame (30) close to the pressing plate (26), and two ends of the elastic member (41) are respectively mounted on the first mounting portion (261) and the second mounting portion (31).

7. The earphone device according to any one of claims 3 to 6, characterized in that: The earphone seat (21) comprises a first seat body (2101) and a second seat body (2102) extending from the first seat body (2101) in a direction away from the shell opening (12); the second seat body (2102) is slidably connected to the middle frame (30); A locking member (42) is arranged between the second seat body (2102) and the middle frame (30); when the locking member (42) is in a locked state, the locking member (42) limits the earphone seat (21) from moving in the direction of the shell opening (12); when the locking member (42) is in an unlocked state, the earphone seat (21) can move in the direction of the shell opening (12) under the action of the elastic member (41); the locking member (42) can switch between the locked state and the unlocked state when the second seat body (2102) moves in a direction away from the shell opening (12).

8. The headphone device according to claim 7, characterized in that: The second seat body (2102) is provided with a guide groove (213); the locking member (42) is a locking rod, one end of which is mounted on the middle frame (30) and the other end is inserted into the guide groove (213); the guide groove (213) comprises a locking groove (2131), a first guide groove (2132), and a second guide groove (2133) which are connected in sequence; The first guide groove (2132) extends from the locking groove (2131) in a direction away from the shell opening (12), and the first part of the second guide groove (2133) extends from the first guide groove (2132) in a direction away from the shell opening (12), and the second part extends from the first part in a direction approaching the shell opening (12); When the earphone seat (21) is located at the storage position, the locking rod is clamped in the locking groove (2131); when the earphone seat (21) is located at the opening position, the locking rod is located in the second guide groove (2133).

9. The headphone device according to claim 8, characterized in that: It also includes an elastic pressing piece (43), which is connected to the middle frame (30) or the outer shell (10); the elastic pressing piece (43) is pressed on the side of the locking rod away from the second seat body (2102); the elastic pressing piece (43) is used to limit the locking rod from escaping from the guide groove (213).

10. The earphone device according to any one of claims 3 to 6, characterized in that: The earphone device comprises two earphone sockets (21); The middle frame (30) is provided with two seat grooves (321) at intervals, and the two earphone seats (21) are respectively arranged in the two seat grooves (321); a plurality of sealing rings are provided between the outer wall of the earphone seat (21) and the seat groove (321); The middle frame (30) is also provided with a receiving groove (322), wherein the receiving groove (322) is formed between the two seat grooves (321), and the earphone device comprises a battery (51), wherein the battery (51) is arranged in the receiving groove (322).

11. The earphone device according to any one of claims 1 to 6, characterized in that: The earphone device further comprises a display screen (55); the housing (10) is provided with a screen opening, and the display screen (55) is arranged in the screen opening.

12. The earphone device according to any one of claims 1 to 6, characterized in that: The earphone device also includes a circuit mainboard (52), a charging connector (53) and a button (54); The circuit main board (52) is arranged between the middle frame (30) and the outer shell (10), and a waterproof seal (80) is arranged between the circuit main board (52) and the middle frame (30); the outer shell (10) is provided with a charging opening, the charging connector (53) is inserted into the charging opening, and a waterproof seal (80) is arranged between the charging connector (53) and the charging opening; the outer shell (10) is provided with a push opening, the button (54) is inserted into the push opening, and a waterproof seal (80) is arranged between the button (54) and the push opening.

13. The earphone device according to any one of claims 3 to 6, characterized in that: The housing (10) is a transparent housing; the earphone device comprises a first shielding sheet and a second shielding sheet arranged between the housing (10) and the middle frame (30); The earphone modules (20) are respectively arranged on both sides of the middle frame (30) in the x direction, and a first shielding sheet and a second shielding sheet are respectively arranged on both sides of the middle frame (30) in the y direction; a shielding gap is formed between the first shielding sheet and the middle frame (30), and between the second shielding sheet and the middle frame (30).

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