Head-mounted device

Abstract

The embodiment of the invention discloses a head-mounted device which is characterized in that a housing is provided with an accommodating chamber and a sound wave channel, a first port of the sound wave channel is connected with the accommodating chamber, a second port of the sound wave channel extends to the outer surface of a wearing part to form a sound outlet, and a loudspeaker is arranged in the accommodating chamber. Therefore, on one hand, one side, provided with the vibrating diaphragm, of the loudspeaker covers the first port, so that sound can be prevented from being leaked to the accommodating chamber. And on the other hand, in the sound transmission direction, the sectional area of the sound wave channel is gradually increased, so that the pressure value and the amplitude of the pressure wave are changed along with the change of the transmission distance and the change of the section in the sound wave channel. Therefore, the direction of sound waves transmitted from the sound outlet is more concentrated, the loudness is larger, and the distortion of the sound waves is reduced. And on the other hand, the arrangement mode of the loudspeaker on the wearing part can reduce the configuration requirement on the parameters of the loudspeaker, so that the cost of the loudspeaker is lower.

Description

[0001] This application is a divisional application of the Chinese patent application with the application date of August 7, 2024, application number "202411080968.X", and name "Head-mounted device". Technical Field

[0002] The present invention relates to the technical field of electroacoustic conversion, and in particular to a head-mounted device. Background Art

[0003] The speakers on head-mounted devices such as headphones or smart glasses are close to the human ear, so the sound emitted by the speakers will directly enter the human ear, so the quality of the speakers is required to be high. At the same time, the small space on the head-mounted device also makes it difficult to arrange the speakers. How to set up speakers on the head-mounted device and ensure the quality of the sound output by the head-mounted device has become a problem that needs to be solved. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a head mounted device, which utilizes a sound wave channel with a gradually increasing cross-sectional area to conduct the sound waves of the speaker to the sound outlet, thereby improving the sound quality of the head mounted device.

[0005] The head mounted device according to the embodiment of the present invention comprises:

[0006] A loudspeaker, including a diaphragm; and

[0007] The wearing part has a cavity and a sound outlet, wherein the cavity includes a containing chamber and a sound wave channel, one end of the sound wave channel extends to the containing chamber, and the other end is connected to the sound outlet, the speaker is arranged in the containing chamber and the diaphragm faces the sound wave channel;

[0008] At least a portion of the sound wave channel extends in a curved manner along a reference plane, and in the extending direction, a cross-sectional area of ​​the sound wave channel close to the sound outlet is larger than a cross-sectional area far from the sound outlet.

[0009] Furthermore, the wearing portion includes a shell, the shell opens the cavity, the outer surface of the shell has an ear hanging area and the sound outlet, and the sound wave channel extends to the sound outlet.

[0010] Further, the housing includes a sound waveguide, and the inner wall of the sound waveguide forms the sound wave channel;

[0011] The acoustic waveguide comprises a first curved section in an extending direction, the first curved section extends along the reference plane, and the first curved section is curved to form the ear hanging area.

[0012] Further, the reference surface has a reference point;

[0013] The acoustic waveguide further comprises a second curved section extending along the reference plane in the extension direction, wherein the second curved section is connected to an end of the first curved section away from the sound outlet;

[0014] The second curved section and the first curved section both surround the reference point and curve in a direction away from the reference point, and a portion of the second curved section is opposite to the ear hanging area and is spaced apart.

[0015] Furthermore, the shell further includes a connecting cap, the connecting cap having the accommodating chamber, and the connecting cap is connected to an end of the second curved section away from the first curved section.

[0016] Furthermore, the sound waveguide tube also includes a third curved section in the extension direction, the third curved section bends toward one side of the reference plane, one end of the third curved section is connected to the end of the first curved section away from the second curved section, and the other end forms the sound outlet.

[0017] Furthermore, a bending amplitude of the second bending section is smaller than a bending amplitude of the first bending section, and an avoidance space is formed between the second bending section and the opposite side of the first bending section.

[0018] Furthermore, the shell includes a temple, the temple has the sound wave channel and the ear hanging area, and the ear hanging area and the sound outlet are both located at the bottom of the temple.

[0019] Furthermore, the sound wave channel includes at least one straight section and at least one curved section in the extension direction, the straight section extends along the length direction of the temple, and the curved section bends from the straight section to the bottom of the temple.

[0020] Further, the sound wave channel extends along an S-shape or a U-shape to the sound outlet;

[0021] There are multiple straight sections, which are arranged at intervals, and two adjacent straight sections are connected by the curved section.

[0022] Furthermore, the sound outlet is arranged close to the ear hanging area, and the accommodating chamber is communicated with a straight section close to the top of the temple.

[0023] Furthermore, the cross section of the acoustic wave channel in the extending direction is a rectangle, the rectangle includes a first side and a second side perpendicular to each other, and the first side is perpendicular to the reference plane;

[0024] In the extension direction of the sound wave channel, the length of the first side remains unchanged.

[0025] The head-mounted device of the embodiment of the present invention has a storage chamber and a sound wave channel in the wearing part, a speaker is arranged in the storage chamber, and the diaphragm is arranged toward the sound wave channel, and a sound outlet is arranged at one end of the sound wave guide tube away from the storage chamber. Thus, on the one hand, the sound wave channel is configured to bend and extend along the reference surface, so that the space occupied by the sound wave channel is smaller, which helps to arrange the sound wave channel in a smaller space, reduces the volume of the wearing part, and is convenient for the wearer to wear. At the same time, the length and cross-sectional area of ​​the sound wave channel are maximized, so that the sound of the sound outlet is more natural. On the other hand, the pressure wave generated by the diaphragm will be transmitted along the bending direction of the sound wave channel. In the direction of sound propagation, the cross-sectional area of ​​the sound wave channel gradually increases, so that the pressure value and amplitude of the pressure wave change with the change of the transmission distance and the cross-sectional change in the sound wave channel. When the pressure wave is transmitted from the first port to the second port, as the cross-sectional area gradually increases, the pressure of the pressure wave will decrease, and the amplitude will increase accordingly. So that the direction of the sound wave propagating from the sound outlet is more concentrated, the loudness will be greater, and the distortion of the sound wave is reduced. On the other hand, the arrangement of the speaker in the wearing part allows the head-mounted device to reduce the configuration requirements for speaker parameters while outputting the same sound quality, thereby reducing the cost of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0027] Figure 1 is a schematic structural diagram of one side of a head mounted device provided by a first embodiment of the present invention;

[0028] Figure 2 is a schematic structural diagram of the other side of the head mounted device provided by the first embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of a wearing state of a head mounted device provided by the first embodiment of the present invention in some implementation modes;

[0030] Figure 4 is a schematic diagram of a wearing state of the head mounted device provided by the first embodiment of the present invention in other implementation modes;

[0031] Figure 5 is an exploded schematic diagram of a head mounted device provided by a first embodiment of the present invention;

[0032] Figure 6 is a partial schematic diagram of a head mounted device provided by a first embodiment of the present invention;

[0033] Figure 7 is a cross-sectional schematic diagram of a wearing portion provided by a first embodiment of the present invention;

[0034] Figure 8 is a schematic structural diagram of a wearing portion provided by a second embodiment of the present invention;

[0035] Fig. 9 is a schematic cross-sectional view of a temple provided by a second embodiment of the present invention in some implementation modes;

[0036] Fig.10 is a schematic diagram of the temples provided by the second embodiment of the present invention in other implementations;

[0037] Fig.11 is a schematic diagram of some further implementations of the temples provided by the second embodiment of the present invention;

[0038] Fig.12 is a schematic diagram of the temples provided by the second embodiment of the present invention in some further implementations;

[0039] Fig.13 yes Fig. 9 Schematic cross-sectional view at CC in the middle;

[0040] Fig.14 yes Fig.10 Schematic cross-sectional view at DD in the middle.

[0041] Description of reference numerals:

[0042] 1- wearing part;

[0043] 11-housing; 111-acoustic waveguide; 1111-first curved section; 1112-second curved section; 1113-third curved section; 1114-connecting cap;

[0044] 12-Ear hanging area;

[0045] 2- Speaker;

[0046] 21-diaphragm;

[0047] 3- Cavity;

[0048] 31- Accommodation room;

[0049] 32-sound wave channel; 321-straight section; 322-curved section;

[0050] 33-voice outlet;

[0051] 4- temples;

[0052] 51- first side; 52- second side;

[0053] 6- Sound network;

[0054] A-reference surface; A1-reference point; B-avoidance space. DETAILED DESCRIPTION

[0055] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, some specific details are described in detail. It is possible for a person skilled in the art to fully understand the present invention without the description of these details. In order to avoid confusing the essence of the present invention, known methods, processes, flows, components and circuits are not described in detail.

[0056] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0057] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0058] In the description of the present invention, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0059] Unless otherwise clearly defined 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0061] Figure 1-Figure 7 FIG. 4 is a structural illustration of a head mounted device according to a first embodiment of the present invention. Figure 8-Figure 14This is a structural illustration of a head mounted device according to a second embodiment of the invention.

[0062] Figure 1 and Figure 2 1 and 2 are schematic diagrams of the structure of the head mounted device provided in the first embodiment. The two figures show a reference plane A and a sound outlet 33 facing the reference plane A, and the reference plane A passes through the wearing part 1. Figure 1 Also shown is a reference point A1 set on the reference surface A.

[0063] Figure 3 and Figure 4 1 is a schematic diagram of the head mounted device provided in the first embodiment in a wearing state. The figure also shows the general outline of the left ear with dotted lines. The head mounted device in this embodiment includes a wearing portion 1. The wearing portion 1 is arranged on the side of the head, and the wearing portion 1 includes a sound waveguide 111 arranged around the human ear and a sound outlet 33 arranged at one end of the sound waveguide 111.

[0064] Figure 3 A specific form of a head-mounted device is shown in the figure, in which the sound outlet 33 is arranged toward the side of the head and staggered with the ear hole. The sound outlet 33 can be arranged on the tragus or the front area of ​​the tragus. The sound waveguide 111 extends from the front edge of the helix (that is, the position where the helix is ​​connected to the side of the head) to the back and bottom of the human ear, and extends from the earlobe position to the front side of the head, so that part of the sound waveguide 111 is located on the inner side of the auricle, that is, sandwiched between the auricle and the head, so as to fix the head-mounted device.

[0065] Figure 4 , another specific form of the head-mounted device is shown in FIG. The sound waveguide 111 in the figure extends from the front edge of the helix (that is, the position where the helix connects to the side of the head) to the back and bottom of the human ear, and extends from the earlobe to the front of the head. At the same time, the curvature of the sound waveguide 111 is larger, so that the sound outlet 33 can be set corresponding to the ear hole.

[0066] It is easy to understand that the reference plane A of the present application is a virtual plane, and the reference point A1 is a virtual point. That is, the reference plane A and the reference point A1 do not exist in the actual product. At least a portion of the acoustic waveguide 111 in this embodiment is located on the reference plane A, and a portion of the acoustic waveguide 111 is configured to extend along the extension direction of the reference plane A and is arranged around the reference point A1, so that the structure of the wearing portion 1 is more regular, so that the wearer can wear it more easily.

[0067] Preferably, if Figure 2As shown, the reference plane A is a plane. The first curved section 1111 and the second curved section 1112 of the acoustic waveguide 111 in this embodiment are symmetrically arranged relative to the reference plane A, that is, the acoustic waveguide 111 passes through the center of the acoustic waveguide 111. Thus, the appearance of the head-mounted device is more beautiful.

[0068] Optionally, the reference plane A may also be a curved surface with a certain curvature, that is, the acoustic waveguide 111 may extend in a direction perpendicular to the reference plane A. In this embodiment, the extension direction of the acoustic waveguide 111 may be adjusted according to the structure of the human ear, so that the wearing portion 1 better meets the ergonomic design, thereby making the wearer more comfortable when wearing.

[0069] Figure 5 FIG. 3 is an exploded schematic diagram of the head mounted device provided in the first embodiment. The arrow in the figure indicates the conduction direction of the sound wave in the sound wave channel 32 .

[0070] In some embodiments, Figure 1-Figure 5 As shown, the head-mounted device in this embodiment can be used as an ear-hook earphone, which can be a wired earphone or a wireless earphone. According to the different forms of the sound outlet 33, the ear-hook earphone can be an open earphone or an in-ear earphone.

[0071] Figure 6 It is a partial schematic diagram of the head mounted device provided in the first embodiment. Figure 7 It is a schematic cross-sectional view of the wearing portion 1 provided in the first embodiment. Figure 7 The distances a1, a2 and a3 and the distances b1, b2 and b3 in FIG. 1 are the sizes of the inner diameter and the outer diameter of the acoustic waveguide 111, respectively.

[0072] Figure 8 It is a schematic structural diagram of the temple 4 provided in the second embodiment. Figure 9-12 2 is a schematic cross-sectional view of the temple 4 provided in the second embodiment in different implementations.

[0073] The wearing part 1 in this embodiment can be used for a head-mounted device. The head-mounted device can be used to realize functions such as virtual reality, augmented reality or mixed reality. The head-mounted device includes a display module, two wearing parts 1 and a strap. One end of the two wearing parts 1 is connected to the display module, and the other end is connected by a strap, so as to facilitate fixing the head-mounted device on the user's head. The head-mounted device can also be smart glasses, and the wearing part 1 is a temple 4 connected to the frame.

[0074] In some embodiments, Figure 2 , Figure 6 , Figure 8 and Fig. 9 As shown, the head mounted device in this embodiment includes a wearing portion 1 and a speaker 2. The speaker 2 includes a diaphragm 21.

[0075] Further reference Figure 5 As shown, the wearing part 1 has a cavity 3 and a sound outlet 33. The cavity 3 includes a receiving chamber 31 and a sound wave channel 32, one end of the sound wave channel 32 extends to the receiving chamber 31, and the other end is connected to the sound outlet 33. The speaker 2 is arranged in the receiving chamber 31 and the diaphragm 21 faces the sound wave channel 32.

[0076] Specifically, the sound wave channel 32 has a first port and a second port, the first port is connected to the accommodating chamber 31, and the second port extends to the outer surface of the wearing portion 1 to form a sound outlet 33. In this embodiment, the cavity 3 is divided into the accommodating chamber 31 and the sound wave channel 32, and the speaker 2 is arranged in the accommodating chamber 31, which can simplify the external structure of the wearing portion 1 and make the appearance of the wearing portion 1 more beautiful. At the same time, the sound waves generated by the speaker 2 can be completely restricted by the cavity 3, further avoiding sound leakage of the speaker 2.

[0077] Preferably, in this embodiment, the diaphragm 21 faces the sound wave channel 32 through the first port, and the speaker 2 is provided with one side of the diaphragm 21 covering the first port, so that the sound waves generated by the diaphragm 21 can all be transmitted along the extension direction of the sound waveguide tube 111, thereby preventing sound from leaking into the accommodating chamber 31.

[0078] At the same time, at least part of the sound wave channel 32 is curved and extended along the reference plane A, and in the extension direction of the sound wave channel 32, the cross-sectional area of ​​the sound wave channel 32 near the sound outlet 33 is greater than the cross-sectional area of ​​the position away from the sound outlet 33. That is, in the extension direction of the sound wave channel 32 extending on the reference plane A from the accommodating chamber 31 to the sound outlet 33, the cross-sectional area of ​​the sound wave channel 32 gradually increases.

[0079] In summary, the head-mounted device in this embodiment has a housing chamber 31 and a sound wave channel 32 in the wearing part 1, the speaker 2 is arranged in the housing chamber 31, and the diaphragm 21 is arranged toward the sound wave channel 32, and a sound outlet 33 is arranged at one end of the sound wave guide tube 111 away from the housing chamber 31. Therefore, on the one hand, the sound wave channel 32 is configured to bend and extend along the reference plane A, so that the space occupied by the sound wave channel 32 is smaller, which helps to arrange the sound wave channel 32 in a smaller space, reduces the volume of the wearing part 1, and is convenient for the wearer to wear. At the same time, the length and cross-sectional area of ​​the sound wave channel 32 are maximized, so that the sound of the sound outlet 33 is more natural. On the other hand, the pressure wave (that is, the sound wave) generated by the diaphragm 21 will be transmitted along the bending direction of the sound wave channel 32. In the direction of sound propagation, the cross-sectional area of ​​the sound wave channel 32 gradually increases, so that the pressure value and amplitude of the pressure wave change with the change of the transmission distance and the cross-sectional change in the sound wave channel 32. When the pressure wave is transmitted from the first port to the second port, as the cross-sectional area gradually increases, the pressure of the pressure wave will decrease, and the amplitude will increase accordingly. This makes the direction of the sound wave propagating from the sound outlet 33 more concentrated, the loudness will be greater, and the distortion of the sound wave will be reduced. On the other hand, the arrangement of the speaker 2 on the wearing part 1 allows the head-mounted device to reduce the configuration requirements for the parameters of the speaker 2 under the condition of the same output sound quality, making the speaker 2 lower in cost.

[0080] It is easy to understand that the sound wave channel 32 in this embodiment can be equivalent to the inner cavity of the horn structure. The cross-sectional area variation trend of the sound wave channel 32 can be configured in different forms, such as conical, exponential or hyperbolic.

[0081] Taking the exponential type as an example, the formula S = S0e can be used δx Calculate the change in cross-sectional area.

[0082] Wherein, x is the distance from the target position to the first port in the extension direction of the acoustic waveguide 111; δ is the winding index; e is a natural number; S0 is the cross-sectional area of ​​the first port (that is, the cross-sectional area of ​​the throat); and S is the cross-sectional area of ​​the target position.

[0083] Optionally, the cross-sectional shape of the sound wave channel 32 in this embodiment can be in the form of a perfect circle, an ellipse, a rectangle or a trapezoid. Those skilled in the art can make a selection according to the form of the wearing portion 1. For example, when the space of the wearing portion 1 is small and the cross-sectional area of ​​the sound wave channel 32 needs to be increased as much as possible, a sound wave channel 32 with a perfect circular cross section can be selected. At the same time, a sound net 6 can be set at the position of the sound outlet 33 to prevent dirt from entering the sound wave channel 32.

[0084] Optionally, the cross-sectional area of ​​the first port in this embodiment may be 0.5 mm 2 ~100mm 2The length of the sound wave channel 32 can be 1 cm to 20 cm, and the area of ​​the sound outlet 33 does not exceed 300 mm 2 . To ensure the sound quality of the headset.

[0085] In some embodiments, Figure 3 , Figure 4 and Figure 8 As shown, the wearing part 1 includes a shell 11. The shell 11 opens a cavity 3, and the outer surface of the shell 11 has an ear hanging area 12 and a sound outlet 33. The wearing part 1 in this embodiment can be hung on the human ear through the ear hanging area 12, so that the sound emitted by the sound outlet 33 can be closer to the human ear.

[0086] Preferably, the ear-hanging area 12 in this embodiment is located on the reference plane A, so that the ear-hanging area 12 and the sound wave channel 32 are on the same plane, which can make the wearing part 1 more stably arranged on the human ear.

[0087] In some embodiments, Figure 3-Figure 5 As shown, the housing 11 includes a sound waveguide 111, and the inner wall of the sound waveguide 111 forms a sound wave channel 32. The sound waveguide 111 includes a first curved section 1111 in the extension direction. The first curved section 1111 extends along the reference plane A, and the first curved section 1111 is curved to form the ear hanging area 12.

[0088] The first curved section 1111 in this embodiment is curved upward from the sound outlet 33, so that the bottom surface of the first curved section 1111 is concave to form the ear hanging area 12. When the wearer sets the wearing part 1 on the ear, the first curved section 1111 will go around the front edge of the helix from the front side of the ear and extend to the side of the auricle facing the head, so that the ear hanging area 12 can be just hung on the front edge of the helix. Therefore, the first curved section 1111 in this embodiment can simultaneously play the role of fixing the wearing part 1 and conducting sound waves, making the appearance of the wearing part 1 more concise and beautiful.

[0089] In some embodiments, Figure 1 and Figure 7 As shown, there is a reference point A1 on the reference plane A. Further referring to Figure 3-Figure 4 As shown, the sound waveguide 111 further includes a second curved section 1112 extending along the reference plane A in the extending direction, and the second curved section 1112 is connected to an end of the first curved section 1111 away from the sound outlet 33 .

[0090] The second curved section 1112 and the first curved section 1111 are both arranged around the reference point A1 and are bent in a direction away from the reference point A1, and part of the second curved section 1112 is opposite to and spaced from the ear hanging area 12. That is, in the extension direction of the reference plane A, the first curved section 1111 and the second curved section 1112 are bent toward the outside of the central area of ​​the sound waveguide 111, and the first curved section 1111 and the second curved section 1112 extend smoothly on the reference plane A.

[0091] Figure 3-Figure 4 The head mounted device is arranged on the left ear, the first curved section 1111 and the second curved section 1112 both extend along a clockwise curve, and the second curved section 1112 extends to the bottom of the first curved section 1111, so that the second curved section 1112 can surround the inner side of the auricle, ensuring that the sound waveguide 111 and the auricle can fix the wearing part 1.

[0092] In some embodiments, Figure 3-Figure 6 As shown, the housing 11 further includes a connection cap 1114. The connection cap 1114 has a receiving chamber 31, and the connection cap 1114 is connected to an end of the second curved section 1112 away from the first curved section 1111. The connection cap 1114 in this embodiment is located at the end of the second curved section 1112, and is used to accommodate the speaker 2.

[0093] Specifically, in this embodiment, the loudspeaker 2 may be first disposed in the accommodation chamber 31 , and then the connection cap 1114 may be bonded to the end of the first curved section 1111 to ensure the stability of the connection of the sound waveguide 111 .

[0094] In some embodiments, Figure 2-Figure 5 As shown, the sound waveguide 111 also includes a third curved section 1113 in the extension direction. The third curved section 1113 is curved toward one side of the reference plane A, one end of the third curved section 1113 is connected to the end of the first curved section 1111 away from the second curved section 1112, and the other end forms a sound outlet 33. That is, the sound outlet 33 is not in the same plane as the first curved section 1111 and the second curved section 1112. The third curved section 1113 in this embodiment is used to guide the sound waves in the direction toward the human ear, so that the sound waves emitted by the sound outlet 33 have better directionality and reduce sound leakage from the head-mounted device.

[0095] In some embodiments, Figure 3-Figure 4 As shown, the bending amplitude of the second bending section 1112 is smaller than the bending amplitude of the first bending section 1111. Figure 5 As shown, an avoidance space B is formed between the second curved section 1112 and the opposite side of the first curved section 1111 .

[0096] The sound waveguide 111 in this embodiment is bent to form an avoidance space B, which is used to avoid the auricle. At the same time, the bending amplitude of the second curved section 1112 is smaller than that of the first curved section 1111, so that the top of the sound waveguide 111 can be hung on the human ear, the middle of the sound waveguide 111 can be attached to the inner side of the auricle, and the tail of the sound waveguide 111 can bypass the bottom of the earlobe and extend to the front and lower part of the human ear. In this way, the sound waveguide 111 can better conform to the shape of the auricle, reducing the discomfort caused to the human ear during the wearer's long-term wearing process.

[0097] Alternatively, if Figure 7 As shown, in this embodiment, the bending angle of the first curved section 1111 relative to the reference point A1 is e1, and the bending angle of the second curved section 1112 relative to the reference point A1 is e2. The angle e1 can be 150 degrees to 180 degrees, and the angle e2 can be 115 degrees to 145 degrees.

[0098] Preferably, the inner wall cross section and the outer wall cross section of the acoustic waveguide 111 in this embodiment are both perfect circles. At the same time, the wall thickness of the acoustic waveguide 111 is configured to be the same. Figure 2 and Figure 7 As shown, the distance a1, the distance a2 and the distance a3 are respectively the inner diameters of the sound wave channel 32 at different positions in the direction of sound wave transmission. Among them, the distance a1, the distance a2 and the distance a3 increase successively. The distance b1, the distance b2 and the distance b3 increase successively. At the same time, the difference between the distance a1 and the distance b1, the difference between the distance a2 and the distance b2, and the difference between the distance a3 and the distance b3 are the same. The wall thickness of the sound wave guide 111 is kept consistent, further reducing the overall weight of the wearing part 1.

[0099] Optionally, the head mounted devices in this embodiment are arranged in pairs, and the wearing parts 1 of the two head mounted devices are arranged in mirror symmetry, so that the two head mounted devices can match the shapes of two ears respectively.

[0100] In an optional implementation, the head-mounted device in the above embodiment is applied to a Bluetooth headset, which includes a wearing portion 1, a speaker 2, a Bluetooth module, a battery, and a wireless power receiving module. The Bluetooth module, the battery, and the wireless power receiving module are arranged in the accommodation chamber 31 (such as Figure 6 The battery is electrically connected to the Bluetooth module, the wireless power receiving module and the speaker 2. Thus, the cavity 3 can be configured as a closed structure, and the wireless power receiving module can receive the power provided by the wireless power transmitting module outside the Bluetooth headset, thereby powering the speaker 2 and the Bluetooth module.

[0101] In another optional implementation, the cross section of the acoustic waveguide 111 of the head mounted device in the above embodiment is configured as a ring. The cross-sectional area of ​​the first port is configured as 7.069 mm 2 , the area of ​​the second port is configured to be 28.274mm 2 The length of the acoustic waveguide 111 is configured to be 0.09 m, and the meandering index is configured to be 15.40327.

[0102] In some embodiments, Figure 8-Figure 9 As shown, the housing 11 includes a temple 4 , which has a sound wave channel 32 and an ear hanging area 12 . The ear hanging area 12 and the sound outlet 33 are both located at the bottom of the temple 4 .

[0103] The temples 4 in this embodiment can be applied to smart glasses or head-mounted display devices for realizing virtual reality and augmented reality. Taking the head-mounted display device as an example, the head-mounted display device includes two temples 4. When the wearer wears the head-mounted display device, the two temples 4 are mounted on the two ears. In this form, the sound outlet 33 is located on the side of the head, so that the wearer can better receive audio.

[0104] In some embodiments, Figure 9-11 As shown, the acoustic wave channel 32 includes at least one straight section 321 and at least one curved section 322 in the extension direction. The straight section 321 extends along the length direction of the temple 4, and the curved section 322 bends from the straight section 321 to the bottom of the temple 4.

[0105] Preferably, if Fig.14 As shown, the reference plane A in this embodiment is a plane. The sound wave channel 32 extends along the length direction and the height direction of the temple 4, and the sound wave channel 32 is symmetrically arranged relative to the reference plane A. Thus, the space inside the temple 4 is fully utilized, so that the volume of the sound wave channel 32 is larger, and the sound emitted by the sound outlet 33 is more natural.

[0106] In some embodiments, Fig. 9 , Fig.10 and Fig.11 As shown, the sound wave channel 32 extends along an S-shape or a U-shape to the sound outlet 33 . There are multiple straight sections 321 , which are arranged at intervals, and two adjacent straight sections 321 are connected by a curved section 322 .

[0107] The sound waves in this embodiment are conducted at least twice along the length direction of the temple 4 and then propagate outward from the sound outlet 33, which increases the length of the sound wave channel 32, improves the convergence of the sound waves, and achieves a better sound amplification effect.

[0108] Fig. 9 and Fig.10The figure shows a sound wave channel 32 having two straight sections 321 and two curved sections 322. The sound wave propagates from one end of the temple 4 to the other end in the sound wave channel 32. After passing through a curved section 322 with an arc of 180 degrees, the sound wave is extended again along the length direction of the temple 4 to propagate to the sound outlet 33.

[0109] Fig.11 The figure shows a sound wave channel 32 having three straight sections 321 and three curved sections 322 . After the sound wave passes through the three curved sections 322 along the length direction of the temple 4 in the sound wave channel 32 , it propagates to the sound outlet 33 .

[0110] In some embodiments, Fig.12 As shown, Fig.12 As shown, the number of the straight section 321 and the curved section 322 in this embodiment is one. The accommodation chamber 31 and the curved section 322 are respectively arranged at the two ends of the straight section 321, and the end of the curved section 322 away from the curved section 322 extends to the bottom of the temple 4 to form a sound outlet 33.

[0111] In this embodiment, the length of the sound wave channel 32 is shortened, so that the cross-sectional area of ​​the sound wave channel 32 can be configured to be larger, and at the same time the winding index is made smaller, so that the sound amplification effect of the wearing part 1 is better and the manufacturing difficulty of the wearing part 1 is reduced.

[0112] In some embodiments, Fig. 9 , Fig.11 and Fig.12 As shown, the sound outlet 33 is arranged near the ear hanging area 12, and the accommodation chamber 31 is connected to the straight section 321 near the top of the temple 4. The sound outlet 33 in this embodiment is arranged adjacent to the ear hanging area 12, so that the sound emitted from the ear hanging area 12 can be closer to the human ear, so that the sound received by the human ear is clearer, and the impact on the surrounding ring is reduced. At the same time, the sound outlet 33 can also be arranged tilted toward the human ear to further improve the directivity of the sound wave.

[0113] In an optional implementation, if Figure 9-10 As shown, the sound wave channel 32 of the head mounted device in this embodiment extends along a U-shape. The cross-sectional area of ​​the first port of the sound wave channel 32 is configured to be 16.619 mm 2 , the area of ​​the second port is configured to be 96.549mm 2 The length of the acoustic waveguide 111 is configured to be 0.1955 m, and the winding index is configured to be 9.

[0114] Fig.13 yes Fig. 9 Schematic cross-sectional view at CC in the middle. Fig.14 yes Fig.10 Schematic cross-sectional view at DD in the middle.

[0115] In some embodiments, Figure 13-14 As shown, the cross section of the sound wave channel 32 in the extension direction is a rectangle, and the rectangle includes a first side 51 and a second side 52 which are perpendicular to each other, and the first side 51 is perpendicular to the reference plane A. At the same time, along the extension direction of the sound wave channel 32, the length of the first side 51 remains unchanged (the distance d1 remains unchanged), that is, as the cross section of the sound waveguide 111 approaches the sound outlet 33, the length of the second side 52 gradually increases (the distance C2 is greater than the distance C1).

[0116] Specifically, the temple 4 in this embodiment includes a top surface and a bottom surface, and the distance between the top surface and the bottom surface is the height of the temple 4, and the height of the temple 4 is greater than the thickness of the temple 4. To this end, in this embodiment, the cross section of the sound wave channel 32 is configured to be rectangular, thereby making full use of the space in the temple 4 to increase the volume of the sound wave channel 32. At the same time, the size of the first side 51 is configured not to change with the depth of the sound wave channel 32, so that the cross-sectional area of ​​the sound wave channel 32 is more accurately controlled, reducing the difficulty of processing.

[0117] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A head mounted device, characterized in that: The head mounted device comprises: A loudspeaker (2) comprising a diaphragm (21); and A wearing portion (1) comprises a shell (11), the shell (11) comprising a sound waveguide (111) and a receiving chamber (31), the inner wall of the sound waveguide (111) forming a sound wave channel (32), the sound waveguide (111) being bent to form an ear hanging area (12), the sound wave channel (32) having a first port and a second port, the first port being connected to the receiving chamber (31), the second port extending to the outer surface of the wearing portion (1) forming a sound outlet (33), the speaker (2) being arranged in the receiving chamber (31) and a side of the diaphragm (21) being arranged to cover the first port; At least a portion of the sound wave channel (32) extends in a curved manner along the reference plane (A), and in the extending direction, the cross-sectional area of ​​the sound wave channel (32) close to the sound outlet (33) is larger than the cross-sectional area of ​​the sound wave channel (32) far from the sound outlet (33).

2. The head mounted device according to claim 1, characterized in that: The acoustic waveguide (111) comprises a first curved section (1111) in the extension direction, the first curved section (1111) extends along the reference plane (A), and the first curved section (1111) is bent to form the ear hanging area (12).

3. The head mounted device according to claim 2, characterized in that: The reference surface (A) has a reference point (A1); The sound waveguide (111) further comprises a second curved section (1112) extending along the reference plane (A) in the extension direction, and the second curved section (1112) is connected to an end of the first curved section (1111) away from the sound outlet (33); The second curved section (1112) and the first curved section (1111) both surround the reference point (A1) and bend in a direction away from the reference point (A1), and a portion of the second curved section (1112) is opposite to the ear hanging area (12) and is arranged at an interval.

4. The head mounted device according to claim 3, characterized in that: The sound waveguide (111) further comprises a third curved section (1113) in the extension direction, wherein the third curved section (1113) curves toward one side of the reference plane (A), one end of the third curved section (1113) is connected to the end of the first curved section (1111) away from the second curved section (1112), and the other end forms the sound outlet (33).

5. The head mounted device according to claim 4, characterized in that: The bending amplitude of the second bending section (1112) is smaller than the bending amplitude of the first bending section (1111), and an avoidance space (B) is formed on the opposite sides of the second bending section (1112) and the first bending section (1111).

6. The head mounted device according to claim 3, characterized in that: The bending angle of the first bending section (1111) relative to the reference point (A1) is 150 degrees to 180 degrees, and the bending angle of the second bending section (1112) relative to the reference point (A1) is 115 degrees to 145 degrees.

7. The head mounted device according to claim 1, characterized in that: The inner wall cross section and the outer wall cross section of the acoustic waveguide (111) are both perfect circles, and the wall thickness of the acoustic waveguide (111) in the extension direction is the same.

8. The head mounted device according to claim 7, characterized in that: The cross-sectional area of ​​the first port is 0.5 mm 2 ~100mm 2 The length of the sound wave channel (32) can be 1 cm to 20 cm, and the cross-sectional area of ​​the sound outlet (33) does not exceed 300 mm 2 .

9. The head mounted device according to claim 7, characterized in that: The cross-sectional area of ​​the first port is 7.069 mm 2 , the area of ​​the second port is 28.274mm 2 The length of the acoustic waveguide (111) is 0.09 m and the meandering index is 15.40327.

10. The head mounted device according to claim 3, characterized in that: The first curved section (1111) and the second curved section (1112) extend along the same plane.

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