An acoustic device

Abstract

One or more embodiments of the present specification relate to an acoustic device, which includes: a hook portion, a connecting portion and a retaining portion. When a user wears the acoustic device, the hook portion is hung between a first side of the user's ear and the head, the retaining portion contacts a second side of the ear, and the connecting portion connects the hook portion and the retaining portion; the hook portion includes a first part and a second part, the first part is connected to the connecting portion, and the second part is connected to the first part; the projection of the first part on the user's sagittal plane has a first curve; the projection of the second part on the user's sagittal plane has a second curve; the first curve has a first extreme point in the first direction; the second curve has a second extreme point in the first direction; the first direction is perpendicular to the cross-sectional direction of the user; the connection point of the first curve and the second curve is the intersection of the bottom edge of the retaining portion away from the connecting portion along the cross-sectional direction perpendicular to the user and the projection of the hook portion on the user's sagittal plane.

Description

[0001] Cross-references

[0002] This application claims priority to Chinese application No. 202011328519.4 filed on November 24, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of acoustics, and in particular to an acoustic device. Background Art

[0004] With the development of acoustic output technology, acoustic output devices (for example, headphones) have been widely used in people's daily lives. They can be used in conjunction with electronic devices such as mobile phones and computers to provide users with an auditory feast. According to the way users wear them, acoustic devices can generally be divided into head-mounted, ear-hook and in-ear types. The comfort and stability of wearing acoustic devices will greatly affect the user's choice and experience. In order to improve the comfort of users wearing acoustic devices, it is often necessary to make the contact area between the acoustic device and the user's ear as large as possible, thereby reducing the pressure on the user's ear from the acoustic device. However, due to the different shapes of the ears of different types of users, it is difficult to design an acoustic device to be able to fully fit the surface opposite to the ear of any type of user (such as men, women or children).

[0005] Therefore, in order to better enable the acoustic device to match the ear shapes of more users, it is necessary to propose an acoustic device with a unique curve design to improve the wearing comfort of different types of users and the wearing stability of the acoustic device. Summary of the invention

[0006] The present application relates to an acoustic device, comprising: a hook-shaped portion, a connecting portion and a holding portion, wherein when a user wears the acoustic device, the hook-shaped portion is hung between a first side of the user's ear and the head, the holding portion contacts a second side of the ear, and the connecting portion connects the hook-shaped portion and the holding portion; wherein the hook-shaped portion comprises a first part and a second part, the first part is connected to the connecting portion, and the second part is connected to the first part; the projection of the first part on the user's sagittal plane has a first curve; the projection of the second part on the user's sagittal plane has a second curve; the first curve has a first extreme point in the first direction; the second curve has a second extreme point in the first direction; wherein the first direction is perpendicular to the cross-sectional direction of the user; the connection point of the first curve and the second curve is the intersection of the bottom edge of the holding portion away from the connecting portion along the cross-sectional direction perpendicular to the user and the projection of the hook-shaped portion on the user's sagittal plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present application will be further described in the form of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not restrictive, and in these embodiments, the same number represents the same structure, wherein:

[0008] Figure 1 is a schematic diagram of an exemplary ear according to some embodiments of the present application;

[0009] Figure 2 is a schematic diagram of a front-side perspective of a user wearing an exemplary acoustic device according to some embodiments of the present application;

[0010] Figure 3 is a schematic structural diagram of an exemplary acoustic device according to some embodiments of the present application when viewed from the back side of the ear to the front side of the ear;

[0011] Figure 4 is a schematic structural diagram of an exemplary acoustic device according to some embodiments of the present application observed from one side of the top of a user's head;

[0012] Figure 5 is a projection curve diagram of an exemplary acoustic device on a YZ plane according to some embodiments of the present application;

[0013] Figure 6 is a schematic diagram of a rear perspective of a user wearing an exemplary acoustic device according to some embodiments of the present application. DETAILED DESCRIPTION

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0015] It should be understood that the "system", "device", "unit" and / or "module" used herein is a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0016] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an", and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "comprises" and "includes" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.

[0017] Flowcharts are used in the present application to illustrate the operations performed by the system according to the embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed accurately in order. On the contrary, the various steps may be processed in reverse order or simultaneously. At the same time, other operations may also be added to these processes, or one or more operations may be removed from these processes.

[0018] Figure 1 is a schematic diagram of an exemplary ear according to some embodiments of the present application.

[0019] See also Figure 1 , the ear 100 may include an external auditory canal 101, a cavity concha 102, a cymba concha 103, a triangular fossa 104, an antihelix 105, a scaphoid 106, an auricle 107, an earlobe 108, and an auricle crus. In some embodiments, the wearing and stabilization of the acoustic device can be achieved with the help of one or more parts of the ear 100. In some embodiments, the external auditory canal 101, the cavity concha 102, the cymba concha 103, the triangular fossa 104, and other parts have a certain depth and volume in three-dimensional space, which can be used to achieve the wearing requirements of the acoustic device. For example, an acoustic device (for example, an in-ear headphone) can be worn in the external auditory canal 101. In some embodiments, the wearing of the acoustic device can be achieved with the help of other parts of the ear 100 except the external auditory canal 101. For example, the wearing of the acoustic device can be achieved with the help of the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, the auricle 107, and other parts or a combination thereof. In some embodiments, in order to improve the comfort and reliability of the acoustic device in wearing, it is also possible to further use the user's earlobe 108 and other parts. By using other parts of the ear 100 other than the external auditory canal 101 to achieve the wearing of the acoustic device and the propagation of sound, the user's external auditory canal 101 can be "liberated" and the impact of the acoustic device on the user's ear health can be reduced. When the user wears the acoustic device on the road, the acoustic device will not block the user's external auditory canal 101. The user can receive both the sound from the acoustic device and the sound from the environment (for example, horns, car bells, surrounding human voices, traffic control sounds, etc.), thereby reducing the probability of traffic accidents. For example, when the user wears the acoustic device, the entire or partial structure of the acoustic device can be located on the front side of the helix crus (for example, Figure 1For another example, when the user wears the acoustic device, the entire or partial structure of the acoustic device may contact the upper part of the external auditory canal 101 (for example, the location of one or more parts such as the crus of the helix, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, the helix 107, etc.). For another example, when the user wears the acoustic device, the entire or partial structure of the acoustic device may be located in one or more parts of the ear (for example, the cavum concha 102, the cymba concha 103, the triangular fossa 104, etc.) (for example, Figure 1 The area enclosed by the dashed line M).

[0020] The description of the ear 100 is for illustrative purposes only and is not intended to limit the scope of the present application. For those skilled in the art, various changes and modifications can be made according to the description of the present application. For example, for different users, the structure, shape, size, thickness, etc. of one or more parts of the ear 100 may be different. For another example, a partial structure of the acoustic device may cover part or all of the external auditory canal 101. These changes and modifications are still within the scope of protection of the present application.

[0021] Figure 2 is a schematic diagram of a front-side perspective of a user wearing an exemplary acoustic device according to some embodiments of the present application. It can be understood that, Figure 2 The plane shown in is parallel or substantially parallel to the sagittal plane of the user wearing the acoustic device.

[0022] In some embodiments, the acoustic device 200 may include a hook portion 210, a holding portion 220, and a connecting portion 230. Figure 2 When the user wears the acoustic device 200, the hook portion 210 of the acoustic device 200 may be located at a first side of the user's ear 100 (e.g., the side of the user's ear 100 facing the user's head, which may also be referred to as the back side of the ear 100), and at least partially contacts the ear 100. The holding portion 220 may be located at a second side of the user's ear 100 (e.g., the side of the user's ear 100 facing away from the user's head, which may also be referred to as the front side of the ear 100), and at least partially contacts the ear 100. The connecting portion 230 is connected between the hook portion 210 and the holding portion 220, and the connecting portion 230 may extend from between the user's ear 100 and the head to the second side of the ear 100.

[0023] In some embodiments, when the user wears the acoustic device 200, the hook portion 210 has one or more contact areas (e.g., contact area A) that contact the user's ear, and the retaining portion 220 also has one or more contact areas (e.g., contact area B) that contact the user's ear, so as to "clamp" the acoustic device 200 on the user's ear. In some embodiments, compared to when the user wears the acoustic device 200, when the user does not wear the acoustic device 200, the distance between the one or more contact areas (e.g., contact area A) of the hook portion 210 and the one or more contact areas (e.g., contact area B) of the retaining portion 220 is smaller (e.g., along the extension direction of the connecting portion 230), so that when the user wears the acoustic device 200, the hook portion 210 and the retaining portion 220 cooperate with each other to provide the ear 100 with a pressing force toward the first side and the second side of the ear 100, respectively, so that the acoustic device 200 is "clamped" on the ear 100.

[0024] In order to improve the firmness of the acoustic device 200 when the user wears it, the pressing force of the hook 210 and the retaining portion 220 on the first side and the second side of the ear 100 cannot be set too small, but too large a pressing force will cause the user's ears to be uncomfortable when wearing the acoustic device 200. Therefore, in some embodiments, the contact area with the ear 100 on the hook 210 and the retaining portion 220 can be set as many as possible, or the contact area has a total contact area as large as possible, so that the pressing force of the acoustic device 200 on the ear 100 can be dispersed to act on different contact positions of the ear, reducing the discomfort caused by the large local force (or pressure) on the ear 100. In some embodiments, the hook 210 and the retaining portion 220 can be designed so that the surface opposite to the ear 100 is completely attached to the user's ear 100, so that the hook 210 and the retaining portion 220 have as large a contact area with the ear 100 as possible, thereby reducing the pressure on the ear 100. However, due to the different shapes of the ears of different types of users, it is difficult to design the hook portion 210 and the retaining portion 220 to be able to completely fit with the surface opposite to the ear 100 of any type of user (such as men, women or children). For example, the depth of the cylindrical concha 103 of some users is shallow, while the depth of the cylindrical concha 103 of other users is deep. If the hook portion 210 is designed to fit with the back side (i.e., the first side) of the cylindrical concha 103 of some users with shallow depth, when other users with deep cylindrical concha 103 wear the acoustic device 200, since the deeper cylindrical concha 103 has a larger protrusion on the first side, the hook portion 210 will be propped up at the protrusion, making it difficult for other areas of the ear 100 to contact with the hook portion 210, which in turn makes the contact area between the hook portion 210 and the ear 100 smaller. Therefore, in some embodiments, the hook portion 210 may be provided with one or more non-contact areas that do not contact the ear 100. The one or more non-contact areas may correspond to specific areas or more protruding areas of the ears of different types of users, thereby avoiding the contact area between the hook portion 210 and the ear 100 becoming smaller due to the different ear shapes of different types of users, thereby allowing different types of users to have a good sense of comfort when wearing the acoustic device 200.

[0025] In some embodiments, in order to better enable the acoustic device 200 (especially the hook-shaped portion 210) to match the ear shapes of more users, a unique curve design may be performed on the hook-shaped portion 210 to meet the comfort requirements of the user when wearing the acoustic device 200. In some embodiments, the hook-shaped portion 210 may include a first portion and a second portion having different curves, and different curve designs may make the first portion and the second portion fit the user's ear differently, so that the hook-shaped portion 210 of the acoustic device 200 can adapt to the ear shapes of more users, thereby improving the comfort of the user when wearing the acoustic device 200.

[0026] In some embodiments, by providing one or more contact areas that contact the ear 100 and non-contact areas that do not contact the ear 100 on the hook 210, the stability of the acoustic device 200 worn by the user can be taken into account while improving the comfort of different types of users wearing the acoustic device 200. For more description of the one or more contact areas that contact the ear and the non-contact areas that do not contact the ear on the hook 210, please refer to the present application. Figure 6 and its related description.

[0027] In some embodiments, in order to allow different types of users to make the hook portion 210 contact the ear 100 as much as possible when wearing the acoustic device 200, the acoustic device 200 may further include a plastic portion connected to the hook portion 210. The plastic portion is disposed between the hook portion 210 and the ear 100, and the plastic portion may be plastically deformed when subjected to an external force, thereby deforming into a shape consistent with the contour of the ear 100, thereby increasing the contact area between the acoustic device 200 and the ear 100 and dispersing the pressing force of the acoustic device 200 on the ear 100. By providing the plastic portion, the acoustic device 200 may also be adapted to the ear shape of any type of user, thereby improving the universality of the acoustic device 200.

[0028] In order to facilitate the description of the relationship between the various parts of the acoustic device (for example, the acoustic device 200) and the relationship between the acoustic device and the user, one or more coordinate systems are established in this specification. In some embodiments, the three basic planes of the human body, namely the sagittal plane, the coronal plane, and the horizontal plane, and the three basic axes, namely the sagittal axis, the coronal axis, and the vertical axis, can be defined similarly to the medical field. Figure 1-Figure 2The coordinate axes in the figure, wherein the sagittal plane refers to a section perpendicular to the ground along the front-back direction of the body, which divides the human body into left and right parts. In the embodiment of the present specification, the sagittal plane may refer to the YZ plane, that is, the X axis is perpendicular to the sagittal plane of the user; the coronal plane refers to a section perpendicular to the ground along the left-right direction of the body, which divides the human body into front and back parts. In the embodiment of the present specification, the coronal plane may refer to the XZ plane, that is, the Y axis is perpendicular to the coronal plane of the user; the transverse section refers to a section parallel to the ground along the up-down direction of the body, which divides the human body into upper and lower parts. In the embodiment of the present specification, the transverse section may refer to the XY plane, that is, the Z axis is perpendicular to the transverse section of the user. Accordingly, the sagittal axis refers to an axis perpendicular to the coronal plane along the front-back direction of the body. In the embodiment of the present specification, the sagittal axis may refer to the Y axis; the coronal axis refers to an axis perpendicular to the sagittal plane along the left-right direction of the body. In the embodiment of the present specification, the coronal axis may refer to the X axis; the vertical axis refers to an axis perpendicular to the horizontal plane along the up-down direction of the body. In the embodiment of the present specification, the vertical axis may refer to the Z axis.

[0029] It should be noted that Figure 2 The state of wearing the acoustic device 200 shown is a normal wearing state. Of course, due to individual differences among users, the actual wearing state of the acoustic device 200 may be somewhat different from the aforementioned normal wearing state. In some embodiments, for different types of users (for example, adult males, adult females, minors, children, etc.), the structure, shape, size, thickness, etc. of one or more parts of their ears 100 may be different. For example, a partial structure of the acoustic device may cover part or all of the external auditory canal 101. These changes and modifications are still within the scope of protection of this application.

[0030] Figure 3 It is a schematic diagram of the structure of an exemplary acoustic device shown in some embodiments of the present application when viewed from the back side of the ear to the front side of the ear. Figure 4 It is a schematic structural diagram of an exemplary acoustic device according to some embodiments of the present application as viewed from the side of the top of the user's head. Figure 5 is a projection curve diagram of an exemplary acoustic device on the YZ plane according to some embodiments of the present application.

[0031] See also Figure 3-Figure 4In some embodiments, the acoustic device 300 may include a hook portion 310, a holding portion 320, and a connecting portion 330. When the user wears the acoustic device 300, the hook portion 310 may be hung between the first side of the user's ear and the head, the holding portion 320 contacts the second side of the ear, and the connecting portion 330 connects the hook portion 310 and the holding portion 320. The first side of the ear may be the back side of the user's ear, and the second side of the user's ear may be the front side of the user's ear. The front side of the user's ear refers to the side of the user's ear where the cymba concha (e.g., cymba concha 103), the triangular fossa (e.g., the triangular fossa 104), the antihelix (e.g., the antihelix 105), the scaphoid (e.g., the scaphoid 106), and the helix (e.g., the helix 107) are located. The back side of the user's ear refers to the side of the user's ear that is away from the front side, that is, the side opposite to the front side.

[0032] In some embodiments, when the user wears the acoustic device 300, the hook portion 310 may at least partially contact the first side of the ear. In some embodiments, the hook portion 310 may include any shape suitable for the user to wear, for example, a hook shape, a C shape, etc. In some embodiments, the hook portion 310 may have a certain elastic deformation ability, so that the hook portion 310 can be deformed under the action of an external force, and then displaced relative to the retaining portion 320, so as to allow the hook portion 310 to cooperate with the retaining portion 320 to elastically clamp the ear. In this way, when the user wears the acoustic device 300, he can first apply a little force to make the hook portion 310 deviate from the retaining portion 320, so that the ear can be inserted between the retaining portion 320 and the hook portion 310; after the wearing position is suitable, let go to allow the acoustic device 300 to elastically clamp the ear; of course, the position of the acoustic device 300 on the ear can be further adjusted according to the actual wearing situation.

[0033] In some embodiments, when the user wears the acoustic device 300, the hook portion 310 may be moved in a direction perpendicular to the sagittal plane of the user (eg, Figure 3 In some embodiments, the hook-shaped portion 310 may be arranged in a direction perpendicular to the sagittal plane of the user while the user is wearing the acoustic device 300. In some embodiments, the hook-shaped portion 310 may be arranged in a direction parallel to the sagittal plane of the user (e.g., Figure 3The hook-shaped portion 310 deflects relative to the retaining portion 320 in the ZOY plane (shown) with the highest point of the hook-shaped portion 310 corresponding to the user's ear as a fulcrum (for example, the CP1 position), so that the hook-shaped portion 310 generates a second pressing force on the first side of the ear. In some embodiments, the second pressing force can act on the user's ear through the contact area on the hook-shaped portion 310 (for example, other contact areas except the CP1 position). In some embodiments, the position of action of the second pressing force can be the midpoint CP0 position of the portion of the projection of the hook-shaped portion 310 in the X-axis direction (i.e., perpendicular to the sagittal plane direction of the user) that overlaps with the projection of the retaining portion 320 in the X-axis direction. In some embodiments, the position of action of the second pressing force can be the position corresponding to the arc segment of the hook-shaped portion 310 near the CP0 position, and the arc segment corresponds to one of the contact areas of the hook-shaped portion 310. In some embodiments, the position of action of the second pressing force can be the arc segment (such as the arc segment) corresponding to the portion of the projection of the hook-shaped portion 310 in the X-axis direction (i.e., perpendicular to the sagittal plane direction of the user) that overlaps with the projection of the retaining portion 320 in the X-axis direction. Figure 3 The arc segment from CP2 to CP7 is shown).

[0034] In some embodiments, the direction of action of the second pressing force may be a direction perpendicular to the user's coronal plane (e.g., the Y-axis direction). In some embodiments, the first pressing force and the second pressing force may be measured when the user wears the acoustic device 300. In some embodiments, the first pressing force and the second pressing force may also be measured by simulating the force conditions when the user wears the acoustic device. For example, after measuring the distance that the hook portion 310 deviates from the retaining portion 320 in a direction perpendicular to the user's sagittal plane when the user wears the acoustic device 300, the first pressing force may be measured after the hook portion 310 is deviated in the same manner relative to the retaining portion 320. For another example, after measuring the distance that the hook portion 310 deviates from the retaining portion 320 in a direction perpendicular to the user's coronal plane when the user wears the acoustic device 300, the second pressing force may be measured after the hook portion 310 is deviated in the same manner relative to the retaining portion 320.

[0035] In some embodiments, in order to take into account the firmness and comfort of the acoustic device 300 worn by the user, the first pressing force and the second pressing force of the hook-shaped portion 310 on the first side of the ear can be set within a suitable range. In some embodiments, the first pressing force can be set within a suitable range by adjusting the distance between the position of action of the first pressing force on the hook-shaped portion 310 (such as the CP1 position) and the retaining portion 320 in a direction perpendicular to the user's sagittal plane (such as the X-axis direction). In some embodiments, the second pressing force can be set within a suitable range by adjusting the size of the position of action of the second pressing force on the hook-shaped portion 310 (such as the CP0 position) and the connecting portion 330 (such as the CP3 position) in a direction perpendicular to the user's coronal plane (such as the Y-axis direction).

[0036] In some embodiments, in order to balance the comfort and stability of the user when wearing the acoustic device 300, the first pressing force of the hook portion 310 on the first side of the ear can be 0.05 Newton to 3 Newtons. In some embodiments, in order to further improve the comfort of the user when wearing the acoustic device 300, the first pressing force of the hook portion 310 on the first side of the ear can be 0.3 Newton to 0.4 Newton.

[0037] In some embodiments, in order to balance the comfort and stability of the user when wearing the acoustic device 300, the second pressing force of the hook 310 on the first side of the ear can be 0.05 Newton to 3 Newtons. In some embodiments, in order to further improve the comfort of the user when wearing the acoustic device 300, the second pressing force of the hook 310 on the first side of the ear can be 0.4 Newton to 0.6 Newton.

[0038] In some embodiments, the hook portion 310 may include a first portion 311 and a second portion 312. In some embodiments, the starting point (CP3) of the first portion 311 is the connection point between the first portion 311 and the connecting portion 330, and the end point (CP2) of the first portion 311 is the projection position of the bottom edge of the holding portion 320 away from the connecting portion 330 on the hook portion 310 along the X-axis direction. The starting point (CP2) of the second portion 312 is the end point of the first portion 311, and the end point (CP4) of the second portion 312 is the end point of the free end (the end away from the connecting portion 330) of the hook portion 310.

[0039] In some embodiments, the pressing force (e.g., the first pressing force and the second pressing force) of the hook portion 310 on the first side of the ear can be applied to the ear of the user by the first portion 311 and the second portion 312, respectively. In some embodiments, the projection of the first portion 311 and the retaining portion 320 on the sagittal plane of the user has an overlapping portion (e.g., Figure 3 When the user wears the acoustic device 300, the distance between the hook portion 310 and the holding portion 320 corresponding to the overlapping portion changes the most. Therefore, when the user wears the acoustic device 300, the overlapping portion can produce a greater pressing force on the user's ear. With this arrangement, the pressing force provided by the holding portion 320 to the first portion 311 can be greater than the pressing force provided by the holding portion 320 to the second portion 312.

[0040] In some embodiments, when the user wears the acoustic device 300, the hook portion 310 will also generate friction on the ear to overcome the movement tendency of the acoustic device 300 to rotate relative to the ear caused by the wearing operation. In some embodiments, different parts of the hook portion 310 have different friction forces on the ear. In some embodiments, the first portion 311 and the second portion 312 have different friction forces on the ear. In some embodiments, compared with the first portion 311, the second portion 312 has a rougher surface.

[0041] In some embodiments, the surface friction coefficient of the second portion 312 may be 1.1 to 4 times that of the surface friction coefficient of the first portion 311. In some embodiments, the surface friction coefficient of the second portion 312 may be 1.5 to 4 times that of the surface friction coefficient of the first portion 311. In some embodiments, the surface friction coefficient of the second portion 312 may be 2 to 4 times that of the surface friction coefficient of the first portion 311. Since the hook portion 310 (such as the first portion 311 and the second portion 312) has an arc-shaped contact surface with the user's ear, the larger the contact area between the hook portion 310 and the ear, the greater the sum of the friction between the hook portion 310 and the ear. In some embodiments, the second portion 312 may have a larger contact area with the ear than the first portion 311, so that the friction force of the second portion 312 on the ear is greater than the friction force of the first portion 311 on the ear. In some embodiments, the contact area between the second portion 312 and the ear may be 1.1 to 4 times that of the contact area between the first portion 311 and the ear. In some embodiments, the contact area between the second portion 312 and the ear may be 1.2 to 3 times the contact area between the first portion 311 and the ear. In some embodiments, the contact area between the second portion 312 and the ear may be 1.5 to 3 times the contact area between the first portion 311 and the ear.

[0042] To more clearly explain the first part 311 and the second part 312, see Figure 5 , the first part 311 and the second part 312 can be described by a projection curve of the hook-shaped portion 310 on the sagittal plane of the user (ie, a projection curve of the hook-shaped portion 310 on the YZ plane).

[0043] See also Figure 5 In some embodiments, the projection of the first portion 311 of the hook-shaped portion 310 on the sagittal plane of the user has a first curve, namely Figure 5 In some embodiments, the first curve may be a curve corresponding to the axis of the first portion 311. The starting point C of the first curve CBAD corresponds to the position of the acoustic device 300 and may be the connection point between the first portion 311 of the hook portion 310 and the connection portion 330 (eg, Figure 3The end point D of the first curve CBAD corresponds to the position of the acoustic device 300 and may be the end point of the first portion 311 (eg, Figure 3 CP2 shown).

[0044] In some embodiments, in the coordinate system YOZ, the first curve CBAD can be described by formula (1):

[0045] f(y)=P1×y 6 +P2×y 5 +P3×y 4 +P4×y 3 +P5×y 2 +P6×y+P7 formula (1)

[0046] Where P1 = -1.393 × 10 -5 ; P2 = -3.423 × 10 -6 ; P3 = 9.998 × 10 -4 ; P4=4.292×10 -5 ; P5 = -9.172 × 10 -2 ; P6 = 8.412 × 10 -2 ; P7=9.038.

[0047] In some embodiments, based on the functional relationship between Z (i.e., fy) and y, the first-order derivative of formula (1) is taken to obtain a point where the first-order derivative of the curve f(y) is zero, which is also called the extreme point of the curve. In some embodiments, the extreme point of the fitting curve f(y) corresponding to the first curve CBAD may include a first extreme point, that is, the first curve CBAD has a first extreme point. In some embodiments, the first extreme point of the curve f(y) is point B, that is, the first curve CBAD has a first extreme point B in the first direction. Since the first extreme point B is obtained based on the curve Z=f(y) of formula (1), it can be considered that the first extreme point B is the extreme point of the curve in the Z direction of the coordinate axis, and the Z-axis direction is recorded as the first direction, that is, the first curve CBAD has a first extreme point B in the first direction. In some embodiments, the first direction may be a direction perpendicular to the extension direction of the retaining portion 320, and the extension direction of the retaining portion 320 refers to the direction pointed by the free end of the retaining portion 320. In some embodiments, the first direction may also be a direction perpendicular to the cross-section of the user wearing the acoustic device 300. In some embodiments, see Figure 5 , the first direction may be the direction of the Z axis. In some embodiments, the first extreme point B may be the maximum point of the curve Z=f(y) in the Z axis direction of formula (1). In some embodiments, the position of the first extreme point B corresponding to the hook portion 310 when it is hung on the user's ear may be the highest point of the hook portion 310 in the first direction (e.g. Figure 3CP1 shown). In some embodiments, the fitting curve f(y) corresponding to the first curve CBAD has only one extreme point B in the first direction. This setting can more conveniently set the extreme point B and the curvature change of the curve near the extreme point B, making the curve design of the hook-shaped portion 310 more accurate.

[0048] In some embodiments, when the user wears the acoustic device 300, the extreme point B of the first curve CBAD (i.e., the highest point CP1 of the acoustic device 300 in the first direction) can contact the area near the highest point of the ear along the Z-axis direction (for example, the connection position from the highest point of the helix to the top of the ear and the head). At this contact position, the ear can also provide support force for the acoustic device 300 to balance its gravity, thereby providing stability in wearing the acoustic device 300.

[0049] It should be noted that the fitting function of formula (1) and its corresponding coefficients P1~P7 are only a fitting expression for realizing the curve design when the first part 311 has a first extreme point near the highest point CP1, and it does not constitute a restriction on the curve CBAD corresponding to the first part 311. Those skilled in the art can change the order of the fitting expression variables, the coefficients of each order variable, or the type of fitting function according to actual conditions to make the curve corresponding to the first part 311 have a maximum point near CP1. These fitting results should be included in the scope of the embodiments of this specification.

[0050] In some embodiments, the outer diameter of the cross section of the second portion 312 may be greater than the outer diameter of the cross section of the first portion 311, so that the first portion 311 and the second portion 312 form a necked (or necked-like) structure, thereby increasing the contact area between the second portion 312 and the first side of the ear, thereby increasing the friction between the second portion 312 and the first side of the ear, and improving the stability of the acoustic device 300 in wearing. Figure 5 , the projection of the second portion 312 on the sagittal plane of the user has a second curve, namely Figure 5 In some embodiments, the second curve may be a curve corresponding to the axis of the second portion 312. The starting point D of the second curve DFE corresponding to the position of the acoustic device 300 may be the starting point of the second portion 312 of the hook portion 310 (eg, Figure 3CP2 shown). In some embodiments, the starting point of the second curve DFE is the connection point of the first curve CBAD and the second curve DFE. In some embodiments, the connection point of the first curve CBAD and the second curve DFE can be the intersection of the bottom edge of the holding portion 320 away from the connecting portion 330 along the cross-sectional direction perpendicular to the user and the projection of the hook portion 310 on the sagittal plane of the user. The end point E of the second curve DFE corresponding to the position of the acoustic device 300 can be the end point of the free end of the hook portion 310 (the end away from the connecting portion 330) (such as Figure 3 CP4 shown). In some embodiments, the end point (i.e., end point E) of the second curve DFE and the projection of the first extreme point (point B) of the first curve CBAD along the first direction (Z-axis direction) may roughly coincide with each other. The roughly coincidence may be that the two points coincide or the distance between the two points is less than 0.5 mm. That is, the end point E of the second curve DFE and the first extreme point B of the first curve CBAD are both at Figure 3 On the first reference plane RP1, the first reference plane RP1 may be a reference plane passing through the first extreme point B of the first curve CBAD and parallel to the XZ plane. In this arrangement, the hook portion 310 may be more symmetrical about the XY plane, the overall structure may be more balanced, the matching degree between the acoustic device 300 and the ear may be improved, and the wearing comfort and stability of the acoustic device 300 may be improved.

[0051] In some embodiments, the second curve DFE can be described by formula (2):

[0052] f(y)=Q1×y 4 +Q2×y 3 +Q3×y 2 +Q4×y+Q5 formula (2)

[0053] Where, Q1=3.931×10 -3 ; Q2=5.546×10 -2 ; Q3=2.974×10 -1 ; Q4=9.822×10 -2 ;Q5=-25.41.

[0054] In some embodiments, based on the functional relationship between Z (i.e., fy) and y, the first-order derivative of expression (2) is taken to determine the point where the first-order derivative of the curve f(y) is 0, which is also called the extreme point of the curve. In some embodiments, the extreme point of the fitting curve f(y) corresponding to the second curve DFE may include a second extreme point, that is, the second curve DFE has a second extreme point. In some embodiments, the second extreme point of the curve f(y) is point F, that is, the second curve DFE has a second extreme point F in the first direction. Since the second extreme point F is obtained based on the curve Z=f(y) of formula (2), it can be considered that the second extreme point F is the extreme point of the curve in the Z direction of the coordinate axis, and the Z axis direction is recorded as the first direction, that is, the second curve DFE has a second extreme point F in the first direction. In some embodiments, the second extreme point F may be the minimum point of the curve Z=f(y) of formula (2) in the Z axis direction. In some embodiments, the second extreme point F of the second curve DFE may be close to the end point E of the second curve DFE. In some embodiments, along the Y-axis direction, the distance between the second extreme point F of the second curve DFE and the end point E may be 0.01 mm to 5 mm. In some embodiments, along the Y-axis direction, the distance between the second extreme point F of the second curve DFE and the end point E may be 0.02 mm to 4 mm. In some embodiments, along the Y-axis direction, the distance between the second extreme point F of the second curve DFE and the end point E may be 0.03 mm to 3 mm. In some embodiments, along the Y-axis direction, the distance between the second extreme point F of the second curve DFE and the end point E may be 0.04 mm to 2 mm. In some embodiments, the position of the second extreme point F on the second portion 312 may be a concave position near the earlobe 108 when the acoustic device 300 is hung on the ear of the user. By setting the second extreme point at the F position near the free end E of the second portion 312, the second portion 312 may form a hook-shaped structure in the FE segment. When the user wears the acoustic device 300, the hook-shaped structure formed by the FE segment can hook the concave portion of the earlobe, thereby increasing the stability of the user when wearing the acoustic device 300. In some embodiments, the fitting curve f(y) corresponding to the second curve DFE has only one extreme point F in the first direction. Through such a setting, the extreme point F and the curvature change of the curve near the extreme point F can be more conveniently set, making the curve design of the hook-shaped portion 310 more precise.

[0055] It should be noted that the fitting function of formula (2) and its corresponding coefficients Q1~Q5 are only a fitting expression for realizing the curve design when the second part 312 has a minimum point near the free end, and it does not constitute a restriction on the curve DFE corresponding to the second part 312. Those skilled in the art can change the order of the fitting expression variables, the coefficients of each order variable, or the type of fitting function according to actual conditions to make the curve corresponding to the second part 312 have a minimum point near the free end. These fitting results should be included in the scope of the embodiments of this specification.

[0056] In some embodiments, the first part 311 and the second part 312 of the hook-shaped portion 310 are connected through the connection point CP2 to form the hook-shaped portion 310, whereby the first curve CBAD and the second curve DFE can also pass through the connection point D to form a projection curve CDE of the hook-shaped portion 310 on the sagittal plane of the user (e.g., parallel to the YZ plane). In some embodiments, in order to increase the contact area between the hook-shaped portion and the ear at the connection point CP2, the curvature of the curve CDE at the connection point D position can be set as small as possible so that the hook-shaped portion 310 has a smoother curve change near the position corresponding to the connection point CP2, thereby dispersing the second pressing force on the ear near the position when the user wears the acoustic device 300, thereby improving the comfort of the user. In some embodiments, in order to increase the contact area between the acoustic device 300 and the ear near the connection point D position, the curvature at the connection point D position can be less than 0.1. In some embodiments, in order to further increase the contact area between the acoustic device 300 and the ear near the connection point D position, the curvature at the connection point D position can be less than 0.04.

[0057] In some embodiments, since the projection curve of the user's ear contour on the user's sagittal plane is often not a smooth curve, but an irregular curve with concave-convex changes, in order to increase the contact area between the hook-shaped portion 310 and the ear, the curve corresponding to the hook-shaped portion 310 (for example, the first curve CBAD and / or the second curve DFE) may also have corresponding concave-convex changes. In some embodiments, corresponding inflection points can be designed for the first curve CBAD and / or the second curve DFE to make the hook-shaped portion 310 also have corresponding concave-convex changes. For example, there is a slight depression in the cartilage near the highest point of the ear along the Z-axis direction, which changes the concave-convexity of the projection curve of the ear contour on the user's sagittal plane near this position, that is, the projection curve of the ear on the user's sagittal plane has an inflection point here. By designing the curve of the hook-shaped portion 310, the curve CBAD of the first part 311 of the hook-shaped portion 310 can also have an inflection point corresponding to the depression, so that when the user wears the acoustic device 300, the hook-shaped portion 310 has a larger contact area with the ear near the highest point of the user's ear along the Z-axis direction, thereby dispersing the force (such as gravity, the first pressing force, etc.) of the acoustic device 300 on the ear, reducing the pressure of the acoustic device 300 on the local contact area of ​​the ear (the contact area near the highest point CP1 and the highest point of the ear), and improving the wearing comfort of the user. For another example, due to the presence of a depression near the earlobe of the ear, the depression changes the concavity and convexity of the ear contour near the earlobe, that is, the contour line of the ear has an inflection point here. By designing the curve of the hook-shaped portion 310, the curve DFE of the second portion 312 of the hook-shaped portion 310 can also have an inflection point corresponding to the depression, so that when the user wears the acoustic device 300, the second portion 312 of the hook-shaped portion 310 can contact the user's ear (especially near the earlobe) as much as possible, thereby increasing the friction between the second portion 312 and the first side of the ear.

[0058] In some embodiments, see Figure 3-Figure 4 The connecting portion 330 connects the hook portion 310 and the holding portion 320 and extends from the first side of the user's ear to the second side of the user's ear. The connecting portion 330 is connected to the hook portion 310 and the holding portion 320, so that the holding portion 320 provides the hook portion 310 with a pressing force on the first side of the ear, and the hook portion 310 provides the holding portion 320 with a pressing force on the second side of the ear 100.

[0059] In some embodiments, the connecting portion 330 can be used to connect the hook portion 310 and the holding portion 320. Specifically, the first end of the connecting portion 330 can be connected to the hook portion 310, and the second end of the connecting portion 330 is connected to the holding portion 320. In some embodiments, the connection between the hook portion 310 and the connecting portion 330 can include a fixed connection or a movable connection, and the connection between the connecting portion 330 and the holding portion 320 can include a fixed connection or a movable connection. In some embodiments, the relative position relationship between the hook portion 310 and the connecting portion 330, and between the connecting portion 330 and the holding portion 320 in three-dimensional space can be adjusted, so that the acoustic device 300 can be adapted to different users and increase the scope of application of the acoustic device 300. For example, the connecting portion 330 can be made of a deformable material such as a soft steel wire, and the user can bend the connecting portion 330 to rotate one part relative to the other part, so as to adjust the relative position of the hook portion 310, the connecting portion 330, and / or the holding portion 320 in three-dimensional space, thereby meeting the wearing needs of the user. In some embodiments, the parameters of the connecting portion 330 (eg, shape, length, thickness, etc.) can be set according to specific circumstances to accommodate ears of different thicknesses and shapes.

[0060] In some embodiments, the part of the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320) that contacts the ear of the user may be made of a softer material, a harder material, or the like, or a combination thereof. A softer material refers to a material whose hardness (e.g., Shore hardness) is less than a first hardness threshold (e.g., 15A, 20A, 30A, 35A, 40A, etc.). For example, the Shore hardness of a softer material may be 45-85A, 30-60D. A harder material refers to a material whose hardness (e.g., Shore hardness) is greater than a second hardness threshold (e.g., 65D, 70D, 80D, 85D, 90D, etc.). The softer materials may include, but are not limited to, polyurethanes (PU) (e.g., thermoplastic polyurethanes (TPU), polycarbonate (PC), polyamides (PA), acrylonitrile butadiene styrene (ABS), polystyrene (PS), high impact polystyrene (HIPS), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC ... Chloride (PVC), polyurethanes (PU), polyethylene (PE), phenolic resin (PF), urea-formaldehyde resin (UF), melamine-formaldehyde resin (MF), silica gel, etc. or a combination thereof. Harder materials may include, but are not limited to, polyethersulfones (PES), polyvinylidenechloride (PVDC), polymethylmethacrylate (PMMA), polyetheretherketone (PEEK), etc. or a combination thereof, or a mixture thereof with reinforcing agents such as glass fiber and carbon fiber. In some embodiments, the material of the portion where the connecting portion 330 (and / or the hook portion 310, the retaining portion 320) of the acoustic device 300 contacts the user's ear can be selected according to the specific circumstances.In this embodiment, softer materials can improve the comfort of the user wearing the acoustic device 300 and the matching degree between the acoustic device 300 and the user's ear, and harder materials can improve the strength of the acoustic device 300. By reasonably configuring the materials of the various components of the acoustic device 300, the strength of the acoustic device 300 can be improved while improving the user's comfort.

[0061] In some embodiments, an elastic filamentary structure may be provided inside the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320) of the acoustic device 300 to improve the structural strength of the acoustic device 300. The above-mentioned softer material and the above-mentioned harder material may be coated on the elastic filamentary structure. In some embodiments, the elastic filamentary structure may include metal wire (for example, spring steel, titanium alloy, titanium-nickel alloy, chrome-molybdenum steel, aluminum alloy, copper alloy, etc.), fiber wire (for example, glass fiber, carbon fiber, etc.), etc. or a combination thereof. In some embodiments, the elastic filamentary structure (such as metal wire) provided inside the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320) may be used to enhance the strength of the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320). In some embodiments, the number, shape, length, thickness, diameter and other parameters of the metal wire may be set according to actual needs (for example, the diameter of the acoustic device component, the strength requirements of the acoustic device component, etc.). The shape of the metal wire may include any suitable shape, for example, a cylinder, a cube, a cuboid, a prism, an ellipsoid, etc.

[0062] In some embodiments, in order to improve the matching degree between different types of user ears and the acoustic device 300, and further improve the comfort and stability of the acoustic device 300 when worn, the size of the connecting portion 330 can be reasonably set. In some embodiments, the size of the connecting portion 330 can include the height dimension of the connecting portion 330 along the direction perpendicular to the user's cross-section (Z-axis direction) and the depth dimension of the connecting portion 330 along the direction perpendicular to the user's sagittal plane (X-axis direction). In some embodiments, the height dimension of the connecting portion 330 along the Z-axis direction can be the distance dimension along the Z-axis direction between the connection point where the connecting portion 330 connects to the hook-shaped portion 310 and the connection point where the connecting portion 330 connects to the retaining portion 320. In some embodiments, see Figure 3 , the dimension d1 of the connecting portion 330 along the direction perpendicular to the cross section of the user (Z-axis direction) may range from 0.36 mm to 4.76 mm. Figure 3The dimension d1 of the connecting portion 330 along the direction perpendicular to the cross section of the user (Z-axis direction) may range from 2.36 mm to 2.76 mm.

[0063] In some embodiments, see Figure 3 , the dimension d2 of the connecting portion 330 along the direction perpendicular to the sagittal plane of the user (X-axis direction) may range from 2 mm to 5 mm. Figure 3 The dimension d2 of the connecting portion 330 along the direction perpendicular to the sagittal plane of the user (X-axis direction) may range from 3.3 mm to 3.7 mm.

[0064] In some embodiments, see Figure 3 and Figure 5 , the connection point CP3 between the connection portion 330 and the hook portion 310 has a first projection point CP5 on the hook portion 310 along the second direction (Y-axis direction) on the YZ plane. The first projection point CP5 corresponds to Figure 5 In some embodiments, the connection point CP3 and the first projection point CP5 are symmetrical about the first reference plane RP1. At this time, the connection point CP3 (i.e., the connection point CP3 between the connection portion 330 and the hook portion 310) Figure 5 The distance between the first extreme point B of the first curve CBAD and the first projection point CP5 (i.e. Figure 5 The distance between point A in the middle of the curve CBAD and the first extreme point B along the second direction. Figure 5 The projection length of the middle curve CB in the Y-axis direction is equal to the projection length of the curve BA in the Y-axis direction. Under this setting, when the user wears the acoustic device 300, the highest point CP1 of the first part 311 can contact the top of the ear (the area near the highest point of the ear, such as the connection position from the highest point of the helix to the top of the ear and the head), and the connection point CP3 of the connecting part 330 and the hook-shaped part 310 and the first projection point CP5 of the connection point CP3 are symmetrically distributed on both sides of CP1 along the second direction (Y-axis direction), thereby improving the symmetry of the hook-shaped part 310 (first part 311) about the first reference plane RP1, making the overall structure of the first part 311 more balanced, thereby improving the matching degree between the acoustic device 300 and the ear, and improving the comfort and stability of the acoustic device 300 in wearing.

[0065] It should be noted that the projection length of the curve CB in the Y-axis direction may be different from the projection length of the curve BA in the Y-axis direction. For example, the projection length of the curve CB in the Y-axis direction is slightly greater than or less than (e.g., the difference between the lengths of the two is between ±1 mm) the projection length of the curve BA in the Y-axis direction. In some embodiments, the projection length of the curve CB in the Y-axis direction and the projection length of the curve BA in the Y-axis direction may also be set according to actual needs (e.g., the ear shapes of different types of users), and no further limitation is made here.

[0066] In some embodiments, in order to improve the applicability of the acoustic device 300, the connection point CP3 ( Figure 5 The distance between the first extreme point B of the first curve CBAD and the connecting point CP3 (in the middle) of the connecting portion 330 and the hook portion 310 along the second direction (Y direction) can be set within a suitable range so that the user can wear the acoustic device 300 more comfortably and stably. In some embodiments, in order to adapt to the ear shape of most users, the connecting point CP3 ( Figure 5 The distance between the connecting point CP3 (C) and the first extreme point B along the second direction (Y direction) may be 7 mm to 12 mm. In some embodiments, in order to adapt to the ear shapes of more users, the connecting point CP3 ( Figure 5 The distance between the middle point C) and the first extreme point B along the second direction (Y direction) can be 9 mm to 10 mm.

[0067] In some embodiments, see Figure 3-Figure 4 , the retaining portion 320 may at least partially contact the second side of the user's ear. In some embodiments, the retaining portion 320 may have a pressing force on the second side of the user's ear under the action of the hook-shaped portion 310, that is, the hook-shaped portion 310 may provide the retaining portion 320 with a pressing force on the second side of the user's ear. Under the action of the pressing force, the retaining portion 320 may be pressed against the areas where the cymba concha (e.g., the cymba concha 103), the triangular fossa (e.g., the triangular fossa 104), the antihelix (e.g., the antihelix 105), and other parts are located, so that when the user wears the acoustic device 300, the acoustic device 300 does not block the external auditory canal of the ear (e.g., the external auditory canal 101).

[0068] In some embodiments, the retaining portion 320 may not only be pressed against the second side of the user's ear under the action of the pressing force, but may also be further extended and retained in the cymba concha and / or the triangular fossa of the ear. In some embodiments, the extending direction of the retaining portion 320 may be along the Y-axis direction. Under this arrangement, the retaining portion 320 may be stopped by the helix of the ear at least in the extending direction of the connecting portion 330, so as to prevent the retaining portion 320 from turning outward when the acoustic device 300 is in the wearing state, thereby improving the stability of the acoustic device 300 in wearing.

[0069] In some embodiments, the acoustic device 300 may further include a core assembly 340, a mainboard assembly 350, a battery assembly 360, etc., or a combination thereof. Any two of the core assembly 340, the mainboard assembly 350, and the battery assembly 360 may communicate in a variety of ways, such as wired connection, wireless connection, etc., or a combination thereof. In some embodiments, the wired connection may include a metal cable, an optical cable, or a hybrid cable of metal and optics, etc. The examples described above are only for convenience of explanation, and the medium of the wired connection may also be other types, such as transmission carriers of other electrical signals or optical signals, etc. Wireless connections may include radio communication, free space optical communication, acoustic communication, electromagnetic induction, etc.

[0070] In some embodiments, the core assembly 340 can be used to convert a signal containing audio information (e.g., an electrical signal) into a corresponding mechanical vibration to generate a sound signal. The audio information may include a video or audio file having a specific data format, or data or files that can be converted into sound through a specific means. The signal containing audio information may include a combination of one or more electrical signals, optical signals, magnetic signals, mechanical signals, etc. The processing process may include frequency division, filtering, denoising, amplification, smoothing, etc., or a combination thereof. The conversion process may include the coexistence and conversion of multiple different types of energy. For example, an electrical signal can be directly converted into mechanical vibrations through a core assembly to generate sound. For another example, audio information may be contained in an optical signal, and a specific earphone core can realize the process of converting an optical signal into a vibration signal. In some embodiments, the core assembly 340 may be disposed in the retaining portion 320. In some embodiments, the movement assembly 340 can be close to the front side of the tragus (e.g., tragus 109) of the user's ear under the action of the pressing force (e.g., the side where the tragus 109, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scapula 106, the helix 107, etc. are located). In some embodiments, the movement assembly 340 can be close to the second side of the user's ear (e.g., the side where the tragus 109, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scapula 106, the helix 107, etc. are located). For example, the movement assembly 340 can contact one or more parts of the upper part of the user's external auditory canal (e.g., the cymba concha 103, the triangular fossa 104, the antihelix 105, the scapula 106, the helix 107, etc.).

[0071] The mainboard component 350 can be used to control the sound of the core component 340. In some embodiments, the mainboard component 350 can control the sound of the core component 340 according to the instructions input by the user. In some embodiments, the mainboard component 350 can generate instructions to control the core component 340 according to the information of one or more components of the acoustic device 300. For example, the mainboard component 350 can receive a user's voice signal, such as "play a song". By processing this voice signal, the mainboard component 350 will generate a control instruction related to the voice signal, for example, controlling the core component 340 to obtain the song information to be played from the storage module (or other device), and generating an electrical signal to control the vibration of the core component 340 accordingly. In some embodiments, the mainboard component 350 can control other components of the acoustic device 300. For example, the mainboard component 350 can generate a control instruction to control the battery component 360 to provide the acoustic device 300 with electrical energy to generate sound.

[0072] In some embodiments, the motherboard assembly 350 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), an application specific instruction set processor (ASIP), a graphics processing unit (GPU), a physical processing unit (PPU), a digital signal processor (DSP), a field programmable gate array (FPGA), a programmable logic device (PLD), a controller, a microcontroller unit, a reduced instruction set computer (RISC), a microprocessor, etc., or any combination thereof.

[0073] In some embodiments, the mainboard assembly 350 can be disposed at any position of the acoustic device 300. For example, the mainboard assembly 350 can be disposed at the holding portion 320. In this case, the wiring distance between the mainboard assembly 350 and other components (e.g., the movement assembly 340, key switches, etc.) disposed on the holding portion 320 can be shortened to reduce signal interference between the wirings and reduce the possibility of short circuits between the wirings.

[0074] The battery assembly 360 can be used to provide power to other components in the acoustic device 300. In some embodiments, the battery assembly 360 may include a flexible circuit board, a battery, etc. The flexible circuit board is used to connect the battery and other components in the acoustic device (for example, the movement assembly 340). The battery may include a storage battery, a dry cell, a lithium battery, a Daniel battery or a fuel cell, or a combination thereof. In some embodiments, the battery assembly 360 may also transmit its own status information to the mainboard assembly 350 and receive instructions from the mainboard assembly 350 to perform corresponding operations. The status information of the battery assembly 360 may include the on / off status, the remaining power, the remaining power usage time, the charging time, etc., or a combination thereof.

[0075] In some embodiments, the battery assembly 360 can be disposed at any position of the acoustic device 300. In some embodiments, the position of one or more components in the acoustic device 300 can be set according to the weight of each part of the acoustic device 300 to balance the weight of each part of the acoustic device 300 and improve the wearing stability and comfort of the acoustic device 300. For example, the movement assembly 340, the mainboard assembly 350, the key switch, etc. can be disposed on the holding portion 320. The battery assembly 360 can be disposed on the second portion 312 of the hook portion 310, so that a lever balance is formed between the second portion 312 and the holding portion 320, thereby improving the wearing stability of the acoustic device 300.

[0076] In some embodiments, when a lever balance is formed between the second portion 312 and the holding portion 320, the fulcrum of the lever may be the highest point CP1 of the first portion 311 in the Z-axis direction. Since the distance between the center of gravity of the holding portion 320 and the highest point CP1 is different from the distance between the center of gravity of the battery assembly 360 and the highest point CP1, the total weight of the holding portion 320 may be different from the weight of the battery assembly 360. In some embodiments, the ratio between the total weight of the holding portion 320 and the weight of the portion of the hook portion 310 including the battery assembly 360 (also referred to as the battery portion) may be within 4:1. In some embodiments, the ratio between the total weight of the holding portion 320 and the weight of the battery portion may be within 3:1. In some embodiments, the ratio between the total weight of the holding portion 320 and the weight of the battery portion may be within 2.5:1. In some embodiments, the ratio between the total weight of the holding portion 320 and the weight of the battery portion may be 2:1. In some embodiments, the ratio between the total weight of the retaining portion 320 and the weight of the battery portion can be within 1.5:1, so that the weight of the acoustic device 300 can be distributed more evenly at both ends. When the user wears the acoustic device 300, the user's ear can serve as a fulcrum to support the acoustic device 300, so that the acoustic device 300 does not slip from the user's ear.

[0077] In some embodiments, the acoustic device 300 may further include a sound outlet hole 370 and a pressure relief hole 380 disposed on the holding portion 320. In some embodiments, the sound emitted by the core assembly 340 may be transmitted to the user's ear via the sound outlet hole 370.

[0078] In some embodiments, the retaining portion 320 can form a front cavity and a rear cavity of the acoustic device 300 on opposite sides of the core assembly 340, and the sound outlet 370 is connected to the front cavity and outputs sound to the ear. In some embodiments, the pressure relief hole 380 is connected to the rear cavity, and the pressure relief hole 380 is farther away from the ear canal than the sound outlet 370. In this way, the pressure relief hole 380 allows air to freely enter and exit the rear cavity, so that the change of air pressure in the front cavity can be as far as possible. Blocked by the rear cavity, thereby improving the sound quality of the sound output to the ear through the sound outlet 370. Not only that, because the phases of the sounds output to the outside of the acoustic device 300 through the sound outlet 370 and the pressure relief hole 380 are opposite, they are anti-phased and canceled in the far field away from the ear, that is, forming an "acoustic dipole", thereby effectively reducing the volume of the far-field sound (such as the sound transmitted to the environment) without reducing the volume of the near-field sound (such as near the user's ear canal) to reduce sound leakage.

[0079] In some embodiments, in the projection on the sagittal plane of the user, by adjusting the distance between the first side 321 of the holder 320 close to the first extreme point B of the first curve CBAD and the first extreme point B of the first curve CBAD, the matching degree between the acoustic device 300 and the user's ear can be adjusted, thereby improving the wearing comfort and stability of the acoustic device 300. In some embodiments, the distance between the first side 321 of the holder 320 and the first extreme point B can be 5 mm to 15 mm. In some embodiments, the distance between the first side 321 of the holder 320 and the first extreme point B can be 8 mm to 9 mm.

[0080] Figure 6 is a schematic diagram of a rear perspective of a user wearing an exemplary acoustic device according to some embodiments of the present application.

[0081] In some embodiments, see Figure 6 When the user wears the acoustic device 300, the hook portion 310 surrounds the first side of the ear (such as the back side of the ear) along the contour of the user's ear. At least part of the first portion 311 of the hook portion 310 contacts the first side of the ear, so that the first portion 311 may have one or more contact areas (such as the first contact area B1, the second contact area B2, etc.) that contact the first side of the ear, and one or more non-contact areas (such as the first non-contact area D1, the second non-contact area D2, etc.) that do not contact the first side of the ear.

[0082] In some embodiments, the first portion 311 is bent toward the first side of the ear in the X-axis direction from the connection point between the first portion 311 and the connecting portion 330 to the starting point of the second portion 312, so that one or more contact areas that contact the first side of the ear are formed on the first portion 311. In some embodiments, the contact area formed on the first portion 311 may include a plurality of contact areas arranged at intervals. In some embodiments, the contact area of ​​the first portion 311 (e.g., the second contact area B2) may include a first contact point, which may be the highest point (also the first extreme point) of the first portion 311 when the user wears the acoustic device 300, that is, the first contact point coincides with the first extreme point. In some embodiments, the contact area of ​​the first portion 311 may include an area where the first contact point is located, for example, an arc segment with an arc length of 3 mm near the first contact point.

[0083] In some embodiments, the contact area of ​​the first part 311 (e.g., the first contact area B1) may also include a second contact point. In some embodiments, the second contact point may be a connection point between the first part 311 and the second part 312. In some embodiments, the second contact point may be an area where the second contact point is located, for example, an arc segment with an arc length of 5 mm near the second contact point. In some embodiments, the contact area of ​​the first part 311 may also include contact areas disposed at other positions of the first part 311, for example, the first part 311 corresponds to a relatively smooth position where the acoustic device 300 is hung on the ear.

[0084] In some embodiments, each of the multiple contact areas formed on the first portion 311 may have a contact area, and the contact areas of different contact areas may be the same or different. In some embodiments, for different types of users, the contact areas of the same contact area of ​​the first portion 311 may be different. For example, when an adult male with thicker ears wears the acoustic device 300, the contact area of ​​the first contact area B1 on the first portion 311 may be greater than the contact area of ​​the first contact area B1 on the first portion 311 when a minor with thinner ears wears the acoustic device 300.

[0085] In some embodiments, the wearing comfort of the acoustic device 300 can be improved by adjusting the number of contact areas on the hook 310 that contact the ear or the total contact area of ​​the contact areas. In some embodiments, the contact areas on the first part 311 of the hook 310 that contact the ear can be more or have a larger total contact area, so that the pressing force of the acoustic device 300 on the ear can be dispersed to different positions of the ear, reducing the discomfort caused by the large local force (or pressure) on the ear, and improving the wearing comfort of the acoustic device 300.

[0086] In some embodiments, due to the different shapes of the ears of different types of users, it is difficult to design the first part 311 of the hook-shaped part 310 so that the surface opposite to the ear of any type of user can completely fit the ear of the user. Therefore, one or more non-contact areas that do not contact the first side of the ear can be set on the first part 311, and the one or more non-contact areas can correspond to the specific areas of the ears of different types of users, so as to avoid the situation where the first part is separated from the ear due to the different shapes of the ears of different types of users, resulting in a smaller contact area between the first part 311 and the ear, so that different types of users can have a good sense of comfort when wearing the acoustic device 300. In some embodiments, the non-contact area formed on the first part 311 can include a plurality of non-contact areas (e.g., a first non-contact area D1 and a second non-contact area D2) arranged at intervals. In some embodiments, the first non-contact area D1 can be a position corresponding to the dorsal protrusion of the triangular fossa 104 when the user wears the acoustic device 300. In some embodiments, the first non-contact area D2 can be a position corresponding to the dorsal protrusion of the cymba concha 103 when the user wears the acoustic device 300. In some embodiments, the contact area that contacts the ear and the non-contact area that does not contact the ear formed on the first part 311 can be alternately distributed in sequence. In some embodiments, by providing the contact area and the non-contact area on the first part 311, it is possible to take into account the pressing force of the first part 311 on the first side of the ear while avoiding discomfort caused by a large local force (or pressure) in a specific area of ​​the user's ear.

[0087] In some embodiments, the second portion 312 of the hook-shaped portion 310 is bent toward the first side surface of the ear in the X-axis direction from the starting point to the end point of the free end, so that one or more contact areas contacting the first side of the ear are formed on the second portion 312. In some embodiments, the contact area of ​​the second portion 312 may include a third contact point, and the third contact point may be the position of the second portion 312 corresponding to the second extreme point F, that is, the third contact point coincides with the second extreme point. In some embodiments, the contact area of ​​the second portion 312 may include an area where the third contact point is located, that is, an area where a position point (such as a second inflection point) close to the end point of the free end of the second portion 312 is located. It should be understood that the second contact point is the connection point between the first portion 311 and the second portion 312, and therefore, the contact area of ​​the second portion 312 may also include the second contact point. In some embodiments, in order to ensure the stability of the second portion 312 in contact with the user's ear, the contact area of ​​the second portion 312 may also include a fourth contact point, and the fourth contact point is located between the second contact point and the third contact point. In some embodiments, in order to further improve the stability of the second portion 312 in contact with the user's ear, the fourth contact point can be set at a position closer to the third contact point, that is, the fourth contact point can be set between the midpoint of the second portion 312 and the third contact point. In some embodiments, the contact area of ​​the second portion 312 can also include other positions of the second portion 312, for example, the second portion 312 corresponds to a relatively smooth position where the acoustic device 300 is hung on the ear.

[0088] In some embodiments, the second portion 312 of the hook-shaped portion 310 may also be provided with one or more non-contact areas that do not contact the ear. In some embodiments, the non-contact areas on the second portion 312 may be provided such that when the user wears the acoustic device 300, the second portion 312 corresponds to the raised edge of the concha cavity on the first side of the ear. The position of the non-contact areas of the exemplary second portion 312 may be as follows: Figure 3The area where the position CP6 is shown. In some embodiments, when the user wears the acoustic device 300, the raised edge of the concha cavity 102 on the first side of the ear is prone to discomfort. In this case, the non-contact area provided at the raised edge of the concha cavity 102 on the first side of the ear in the second part 312 corresponding to the acoustic device 300 can avoid contact with the raised edge, thereby avoiding discomfort at the raised edge. In some embodiments, in order to take into account the wearing comfort of different types of users, the arc length of the non-contact area of ​​the second part 312 (such as the area where the position CP6 is located) along the extension direction of the second part 312 can be 1 mm to 3 mm. In some embodiments, the arc length of the non-contact area of ​​the second part 312 (such as the area where the position CP6 is located) along the extension direction of the second part 312 can be 1.5 mm to 2.5 mm. In some embodiments, the arc length of the non-contact area of ​​the second part 312 (such as the area where the position CP6 is located) along the extension direction of the second part 312 can be 1.8 mm to 2.2 mm.

[0089] In some embodiments, the non-contact area on the first part 311 and / or the second part 312 can provide suitable space for the ear (especially the thicker ear) to avoid squeezing the ear when the acoustic device 300 is worn, but at the same time, when the distance between the non-contact area and the first side of the ear is large, it will also affect the stability of wearing the acoustic device 300. Based on this, in some embodiments, in order to ensure the stability of wearing the acoustic device 300, the distance between the non-contact area and the first side of the ear may not exceed 5 mm. In some embodiments, in order to ensure the stability and comfort of wearing the acoustic device 300, the distance between the non-contact area and the first side of the ear may not exceed 3 mm. In some embodiments, in order to further improve the stability of wearing the acoustic device 300, the distance between the non-contact area and the first side of the ear may not exceed 1 mm.

[0090] In some embodiments, by providing one or more contact areas that contact the ear and non-contact areas that do not contact the ear on the hook portion 310, the stability of the acoustic device 300 worn by the user can be taken into account while improving the comfort of different types of users wearing the acoustic device 300.

[0091] In some embodiments, in order to improve the wearing stability of the acoustic device 300, the second part 312 has a larger contact area with the user's ear. In some embodiments, the contact length of the second part 312 with the contact portion of the first side of the ear may be proportional to the contact area of ​​the second part 312 with the contact portion of the first side of the ear. Specifically, the longer the contact length of the second part 312 with the contact portion of the first side of the ear, the larger the contact area of ​​the second part 312 with the contact portion of the first side of the ear. Since the second part has an arc-shaped contact surface with the user's ear, the larger the contact area of ​​the second part 312 with the contact portion of the first side of the ear, the greater the total friction of the second part 312 on the first side of the ear.

[0092] In some embodiments, in order to increase the friction of the second portion 312 on the first side of the ear and improve the stability of the wearable acoustic device 300, the length of the portion of the second portion 312 in contact with the first side of the ear may exceed 70% of the total length of the second portion 312. In some embodiments, the length of the portion of the second portion 312 in contact with the first side of the ear may exceed 80% of the total length of the second portion 312. In some embodiments, the length of the second portion 312 in contact with the first side of the ear may be the total length of the second portion 312.

[0093] In some embodiments, in order to improve the fit between the acoustic device and the ear when worn by different groups of people, and to enable the acoustic device to adapt to the ear contour of any group of people, the acoustic device 300 may also include a plastic portion (not shown in the figure). The plastic portion may be a structure that can undergo plastic deformation when an external force acts. In some embodiments, the external force that causes the plastic portion to undergo plastic deformation may be a force of no more than 30 Newtons. In some embodiments, the external force that causes the plastic portion to undergo plastic deformation may be a force of no more than 10 Newtons. In some embodiments, the external force that causes the plastic portion to undergo plastic deformation may be a force of no more than 1 Newton.

[0094] In some embodiments, when the user wears the acoustic device 300, the plastic portion may be located between the ear and other structures of the acoustic device 300. For example, the plastic portion may be located between the first side of the ear and the hook-shaped portion. For another example, the plastic portion may be located between the second side of the ear and the retaining portion. When the user wears the acoustic device, the user applies an external force, and the pressing force between the ear and the acoustic device 300 may directly act on the plastic portion, causing the plastic portion to undergo plastic deformation, thereby deforming the plastic portion into a shape consistent with the contour of the ear.

[0095] Plastic deformation is a kind of deformation that cannot be restored to its original state. The plastic part deforms and changes its shape under the action of external force. After the external force disappears, the deformation of the plastic part cannot be restored or can only be partially restored. The part of the deformation that cannot be restored and is retained is the plastic deformation of the plastic part.

[0096] In some embodiments, the plastic portion can be set to have the same curve as other structures of the acoustic device 300 (such as the hook portion 310). When the user wears the acoustic device, without applying external force, there are one or more contact areas and one or more non-contact areas between the plastic portion and the ear, that is, at this time, the acoustic device is roughly fitted with the user's ear but not completely fitted, which plays a basic wearing comfort and stability effect. When the user applies external force (such as applying pressure) to the acoustic device or the plastic portion, the contact area between the plastic portion and the ear is first squeezed, and the contact area between the plastic portion and the ear can be plastically deformed according to the ear contour of the user who actually wears the acoustic device 300, until the non-contact area between the plastic portion and the ear moves to fit the ear, thereby adjusting the shape of the plastic portion to a curved curve that fits the ear contour, and achieving complete or nearly complete fit with the target user's ear. In some embodiments, after applying external force, the proportion of the area of ​​the non-contact area that becomes the contact area to the area of ​​the non-contact area when no external force is applied can be greater than 50%. In some embodiments, after the external force is applied, the area of ​​the non-contact area that becomes the contact area accounts for more than 90% of the area of ​​the non-contact area when the external force is not applied. In some embodiments, after the external force is applied, the area of ​​the non-contact area that becomes the contact area accounts for 100% of the area of ​​the non-contact area when the external force is not applied. Through this setting, the comfort and stability of the acoustic device 300 are greatly improved, which can effectively enhance the user experience.

[0097] In some embodiments, in order to cause the plastic part to undergo plastic deformation, the external force applied to the plastic part needs to be greater than the plastic deformation force of the plastic part. The plastic deformation force is the critical force required for the plastic part to undergo plastic deformation. When the force acting on the plastic part is greater than or equal to the critical force, the plastic part undergoes plastic deformation. When the force acting on the plastic part is less than the critical force, the plastic part undergoes elastic deformation or does not deform. In some embodiments, the plastic deformation force of the plastic part may range from 0.1 Newton to 20 Newtons. In some embodiments, in order to make the plastic part easier to deform and reduce the difficulty of operation for the user, the plastic deformation force of the plastic part may range from 1 Newton to 5 Newtons.

[0098] In some embodiments, the amount of deformation recovery after plastic deformation is related to the plastic material selected for the plastic portion. The plastic modulus of the plastic material can affect the amount of deformation recovery after the plastic material is plastically deformed. Generally speaking, the smaller the plastic modulus of the plastic material, the greater the plastic deformation capacity and the smaller the deformation recovery. In some embodiments, the amount of deformation recovery after the plastic portion is plastically deformed may be less than 20%. In some embodiments, the amount of deformation recovery after the plastic portion is plastically deformed may be less than 10%. In some embodiments, in order to ensure the fit between the plastic portion and the user's ear after deformation, the amount of deformation recovery after the plastic portion is plastically deformed may be less than 1%.

[0099] In some embodiments, the material of the plastic part may include a polymer material, a clay material, etc. In some embodiments, the polymer material may include but is not limited to polyethylene, polypropylene, polystyrene, etc.

[0100] In some embodiments, the plastic part can be provided on the hook-shaped part 310 of the acoustic device 300. In some embodiments, the plastic part can be provided on the first part 311 and / or the second part 312 of the hook-shaped part 310. Preferably, in some embodiments, the plastic part can be provided on the first part 311 of the hook-shaped part 310. When the acoustic device is in a wearing state, the first part 311 of the hook-shaped part is subjected to a greater pressing force than the second part 312, and has a smaller contact area, and the comfort caused to the ear is lower than that of the second part 312. When the plastic part is provided on the first part 311, after applying pressure to the plastic part, the plastic part can be plastically deformed according to the ear shape of the user who actually wears the acoustic device 300, and adjusted to a curved shape that fits the ear contour, so that a larger proportion of the non-contact area in the first part 311 becomes a contact area, achieving full fit or nearly full fit with the ear of the target user.

[0101] In some embodiments, in a direction perpendicular to the sagittal plane of the user, the plastic portion may be disposed between the retaining portion 320 and the first portion 311. In some embodiments, the plastic portion may be disposed on a portion of the outer surface of the first portion 311 that faces the retaining portion, so that the pressing force of the first portion 311 on the first side of the ear can directly act on the plastic portion.

[0102] In some embodiments, the plastic part may have a variety of material forms, and the plastic deformation force required for the plastic part to undergo plastic deformation is different under different material forms. In some embodiments, the plastic deformation force of the plastic part may include a first plastic deformation force and a second plastic deformation force, and the first plastic deformation force and the second plastic deformation force are respectively the plastic deformation forces when the plastic part is in different material forms. In some embodiments, the material form of the plastic part may include a soft state that is easy to deform and a hard state that is difficult to deform. In some embodiments, the plastic deformation force of the plastic part corresponding to the soft state may be the first deformation force, and the plastic deformation force of the plastic part corresponding to the hard state may be the second deformation force. In some embodiments, when the plastic part meets the preset conditions, the plastic part can realize the transformation of the material state, thereby changing the plastic deformation force of the plastic material. In some embodiments, when the preset conditions are met, the plastic part changes from the hard state to the soft state, and the plastic deformation force of the plastic part changes from the second plastic deformation force to the first plastic deformation force. In some embodiments, the range of the first plastic deformation force may be 0.3 Newton to 10 Newtons. Preferably, in some embodiments, the first plastic deformation force may be in the range of 1 Newton to 5 Newtons. Further preferably, the first plastic deformation force may be in the range of 3 Newtons to 5 Newtons. In some embodiments, the second plastic deformation force may be in the range of 10 Newtons to 100 Newtons. In some embodiments, in order to make it difficult for the plastic portion to deform when the preset conditions are not met, the second plastic deformation force may be in the range of 30 Newtons to 60 Newtons. When the above preset conditions are not met, the plastic portion changes from a soft state to a hard state, and the plastic deformation force of the plastic portion changes from the first plastic deformation force to the second plastic deformation force.

[0103] In some embodiments, the preset condition may include a temperature condition. In some embodiments, when the temperature is higher than a threshold value, the plastic portion changes from a hard state to a soft state. In some embodiments, the temperature threshold may be 45°. In some embodiments, the temperature threshold may be 50°. In some embodiments, the temperature threshold may be 55°. In some embodiments, the material of the plastic portion may include thermoplastic polymer materials, including but not limited to polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, polysulfone, rubber, plexiglass, nylon, etc. In some embodiments, the material of the plastic portion may also include other single or composite materials that can achieve the same performance.

[0104] In some embodiments, the plastic part of the acoustic device also includes a resistance wire, and the plastic material wraps the resistance wire. The resistance wire can heat the plastic material by energizing it so that the temperature of the plastic material is higher than a threshold value, completing the transition from a hard state to a soft state. After the resistance wire stops heating, the plastic material cools naturally. When the temperature is lower than the threshold value, the plastic part changes from a soft state to a hard state. In some embodiments, the plastic material can directly wrap the resistance wire. In some embodiments, an additional insulating material can be provided between the plastic material and the resistance wire to wrap the resistance wire, so as to prevent the resistance wire from being exposed due to excessive deformation of the plastic material during the plastic deformation process.

[0105] In some embodiments, the outer side of the plastic part of the acoustic device may be coated with a skin-friendly material, and when the user wears the acoustic device, the skin-friendly material contacts the skin, thereby improving wearing comfort. In some embodiments, the skin-friendly material may be made of one or more materials. The skin-friendly material may be composed of a material with certain adsorption and flexibility, such as cotton, linen, wool fabric, silk fabric, silicone or hand-feeling glue. In some embodiments, the skin-friendly material may also be other single or composite materials that can achieve the same performance to achieve wearing comfort.

[0106] In some embodiments, the acoustic device further includes a control unit for performing various control operations on the acoustic device. In some embodiments, the operation mode of the control unit can be a touch mode or a mechanical key mode. In some embodiments, the control unit includes a resistance wire control switch. When the control switch is triggered, the resistance wire is connected to the power supply, so that the plastic part is in a heating state to achieve a temperature increase. Preferably, the plastic part also includes a temperature detector for detecting the temperature of the plastic part, and the control unit can obtain the temperature information of the temperature detector to automatically control the state of the control switch. When the temperature is higher than the threshold, the control unit can switch the control switch to an off state, at which time the resistance wire is disconnected from the power supply, and the resistance wire stops heating the plastic part. Preferably, the acoustic device further includes a display unit. When the temperature reaches the threshold, the display unit generates an indication signal (for example, a vibration signal or a light signal) to prompt the user that the heating of the plastic part is completed. At this time, the user can wear the acoustic device on the ear to complete the plastic deformation of the plastic part by squeezing and shaping.

[0107] It should be noted that the control unit may also include other control functions of the acoustic device, such as internal voice of the acoustic device, playing and / or pausing music, etc., which is not limited in the embodiments of this specification.

[0108] The basic concepts have been described above. Obviously, for those skilled in the art, the above detailed disclosure is only for example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.

[0109] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment" and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0110] In addition, it will be appreciated by those skilled in the art that various aspects of the present application may be illustrated and described by a number of patentable categories or situations, including any new and useful process, machine, product or combination of substances, or any new and useful improvements thereto. Accordingly, various aspects of the present application may be performed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The above hardware or software may all be referred to as "data blocks", "modules", "engines", "units", "components" or "systems". In addition, various aspects of the present application may be represented as a computer product located in one or more computer-readable media, which includes computer-readable program code.

Claims

1. An acoustic device, characterized in that: include: A hook-shaped portion, a connecting portion and a retaining portion, when a user wears the acoustic device, the hook-shaped portion is hung between a first side of the ear of the user and the head, the retaining portion contacts a second side of the ear of the ear, and the connecting portion connects the hook-shaped portion and the retaining portion; wherein the hook-shaped portion comprises a first part and a second part, the first part is connected to the connecting portion, and the second part is connected to the first part; the projection of the first part on the sagittal plane of the user has a first curve; the projection of the second part on the sagittal plane of the user has a second curve; the first curve has a first extreme point in a first direction; the second curve has a second extreme point in the first direction; wherein the first direction is perpendicular to the cross-sectional direction of the user; the connecting point of the first curve and the second curve is the intersection of the bottom edge of the retaining portion away from the connecting portion along the cross-sectional direction perpendicular to the user and the projection of the hook-shaped portion on the sagittal plane of the user.

2. The acoustic device according to claim 1, characterized in that The first extreme point is a maximum point of the first curve in the first direction; the second extreme point is a minimum point of the second curve in the first direction.

3. The acoustic device according to claim 1, characterized in that When the user wears the acoustic device, the pressing force of the first part on the first side of the ear is greater than the pressing force of the second part on the first side of the ear, and the friction force of the second part on the first side of the ear is greater than the friction force of the first part on the first side of the ear.

4. The acoustic device according to claim 1, characterized in that The first pressing force of the position on the hook-shaped portion corresponding to the first extreme point on the first side of the ear along a direction perpendicular to the sagittal plane of the user is 0.05 Newton to 3 Newtons.

5. The acoustic device according to claim 1, characterized in that A second pressing force applied to the first side of the ear by a position on the hook-shaped portion corresponding to a connection point between the first curve and the second curve along a direction perpendicular to the coronal plane of the user is 0.05 Newton to 3 Newtons.

6. The acoustic device according to claim 1, characterized in that In the projection on the sagittal plane of the user, the distance between the first side of the holding portion close to the first extreme point and the first extreme point is 5 mm to 15 mm.

7. The acoustic device according to claim 1, characterized in that The hook-shaped portion has one or more contact areas in contact with the first side of the ear, and the contact areas include at least a first contact point, a second contact point and a third contact point; the first contact point coincides with the first extreme point, the second contact point coincides with the connection point between the first curve and the second curve, and the third contact point coincides with the second extreme point.

8. The acoustic device according to claim 1, characterized in that The acoustic device further includes a plastic portion, which can be plastically deformed to fit the ear of the user.

9. The acoustic device according to claim 8, characterized in that The plastic portion is disposed on the first portion of the hook portion.

10. The acoustic device according to claim 9, characterized in that In a direction perpendicular to the sagittal plane of the user, the plastic portion is located between the retaining portion and the first part.

Images