An acoustic device

Abstract

The acoustic device (200, 300) comprises a hook portion (210, 310), a connecting portion (230, 330) and a holding portion (220, 320), the hook portion (210, 310) is hung between the first side of the ear (100) and the head of the user when the user wears the acoustic device (200, 300), the holding portion (220, 320) contacts the second side of the ear, and the connecting portion (230, 330) connects the hook portion (210, 310) and the holding portion (220, 320); wherein the hook portion (210, 310) comprises a first portion (311) and a second portion (312), the first portion (311) is connected with the connecting portion (230, 330), and the second portion (312) is connected with the first portion (311); the projection of the first portion (311) on the sagittal plane of the user has a first curve; the projection of the second portion (312) 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 transverse plane direction of the user; the connecting point of the first curve and the second curve is the intersection point of the bottom edge of the holding portion (220, 320) away from the connecting portion (230, 330) along the direction perpendicular to the transverse plane direction of the user and the projection of the hook portion (210, 310) on the sagittal plane of the user.

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] This application relates to the field of acoustics, and in particular to an acoustic device. Background Technology

[0004] With the development of acoustic output technology, acoustic output devices (such as headphones) have been widely used in people's daily lives. They can be used 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 over-ear, ear-hook, and in-ear types. The comfort and stability of wearing acoustic devices greatly affect the user's choice and experience.

[0005] Therefore, it is necessary to propose an acoustic device to improve the user's wearing comfort and the stability of the acoustic device during wear. Summary of the Invention

[0006] This application relates to an acoustic device, comprising: a hook-shaped portion, a connecting portion, and a retaining portion. When a user wears the acoustic device, the hook-shaped portion is suspended 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-shaped portion and the retaining portion. The hook-shaped portion includes a first part and a second part, the first part being connected to the connecting portion and the second part being connected to the first part. The projection of the first part onto the user's sagittal plane has a first curve; the projection of the second part onto the user's sagittal plane 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 user's transverse direction; the connection point of the first curve and the second curve is the intersection point of the bottom edge of the retaining portion away from the connecting portion along a direction perpendicular to the user's transverse direction and the projection of the hook-shaped portion onto the user's sagittal plane.

[0007] In some embodiments, the first extreme point is the maximum point of the first curve in the first direction; the second extreme point is the minimum point of the second curve in the first direction.

[0008] In some embodiments, when a user wears the acoustic device, the pressure exerted by the first portion on the first side of the ear is greater than the pressure exerted by the second portion on the first side of the ear, and the frictional force exerted by the second portion on the first side of the ear is greater than the frictional force exerted by the first portion on the first side of the ear.

[0009] In some embodiments, the first pressing force on the first side of the ear at the position corresponding to the first extreme point on the hook portion is 0.05 Newtons to 3 Newtons in a direction perpendicular to the user's sagittal plane.

[0010] In some embodiments, the position of the hook portion corresponding to the connection point between the first curve and the second curve, and the second clamping force on the first side of the ear in a direction perpendicular to the user's coronal plane, is 0.05 Newtons to 3 Newtons.

[0011] In some embodiments, in the user's projection on the sagittal plane, the distance between the first side of the retaining portion near the first extreme point and the first extreme point is 5 mm to 15 mm.

[0012] In some embodiments, the contact area includes 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.

[0013] In some embodiments, the first portion has one or more contact areas that contact the first side of the ear, and one or more non-contact areas that do not contact the first side of the ear.

[0014] In some embodiments, the distance between the non-contact area and the first side of the ear is no more than 5 mm.

[0015] In some embodiments, the contact area of ​​the second portion that contacts the first side of the ear further includes a fourth contact point, which is located between the connection point between the first curve and the second curve and the second extreme point.

[0016] In some embodiments, the dimension of the connecting portion along the cross-sectional direction perpendicular to the user ranges from 0.56 mm to 4.56 mm.

[0017] In some embodiments, the dimension of the connecting portion along the sagittal plane perpendicular to the user ranges from 2.5 mm to 4.5 mm.

[0018] In some embodiments, the acoustic device further includes a plastic portion capable of plastic deformation to conform to the user's ear.

[0019] In some embodiments, the plastic portion is disposed on the first portion of the hook-shaped portion.

[0020] In some embodiments, the plastic portion is located between the retaining portion and the first portion in a direction perpendicular to the user's sagittal plane.

[0021] In some embodiments, the plastic part has a plastic deformation force. When the force on the plastic part exceeds the plastic deformation force, the plastic part undergoes plastic deformation, and the deformation recovery amount of the plastic deformation is less than 20%.

[0022] In some embodiments, the plastic deformation force includes a first plastic deformation force, the first plastic deformation force being in the range of 0.3 Newtons to 10 Newtons.

[0023] In some embodiments, the plastic deformation force includes a second plastic deformation force, the second plastic deformation force being in the range of 10 Newtons to 100 Newtons.

[0024] In some embodiments, when the plastic part meets a preset condition, the plastic deformation force is transformed from the second plastic deformation force into the first plastic deformation force.

[0025] In some embodiments, the material of the plastic portion includes a thermoplastic polymer. Attached Figure Description

[0026] This application will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0027] Figure 1 This is a schematic diagram of an exemplary ear according to some embodiments of this application;

[0028] Figure 2 This is a schematic diagram of a user wearing an exemplary acoustic device, according to some embodiments of this application, from a frontal perspective.

[0029] Figure 3 This is a schematic diagram of the structure of an exemplary acoustic device shown in some embodiments of this application when viewed from the back of the ear to the front of the ear;

[0030] Figure 4 This is a schematic diagram of the structure of an exemplary acoustic device shown according to some embodiments of this application, viewed from the top of a user's head.

[0031] Figure 5 This is a projection curve of an exemplary acoustic device shown in the YZ plane according to some embodiments of this application;

[0032] Figure 6 This is a schematic diagram of a rear-view perspective of a user wearing an exemplary acoustic device, according to some embodiments of this application. Detailed Implementation

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0034] It should be understood that the terms “system,” “device,” “unit,” and / or “module” used herein are one way to distinguish different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0035] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0036] Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed precisely in sequence. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0037] Figure 1 This is a schematic diagram of an exemplary ear according to some embodiments of this application.

[0038] See Figure 1The ear 100 may include an external auditory canal 101, a concha 102, a cymba conchae 103, a triangular fossa 104, an antihelix 105, a scaphoid fossa 106, a helix 107, an earlobe 108, and a crus of the helix 109. In some embodiments, the ear 100 may be used to wear and stabilize an acoustic device. In some embodiments, the external auditory canal 101, the concha 102, the cymba conchae 103, the triangular fossa 104, etc., have a certain depth and volume in three-dimensional space, which can be used to meet the wearing requirements of the acoustic device. For example, an acoustic device (e.g., an in-ear headphone) may be worn in the external auditory canal 101. In some embodiments, the ear 100 may be used to wear an acoustic device using other parts of the ear 100 besides the external auditory canal 101. For example, the cymba conchae 103, the triangular fossa 104, the antihelix 105, the scaphoid fossa 106, the helix 107, etc., or combinations thereof, may be used to wear an acoustic device. In some embodiments, to improve the comfort and reliability of the acoustic device during wear, it may be further utilized by the user's earlobe 108 or other parts of the ear. By utilizing 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," reducing the impact of the acoustic device on the user's ear health. When the user wears the acoustic device on the road, the acoustic device will not block the user's external auditory canal 101, and the user can receive both the sound from the acoustic device and the sound from the environment (e.g., horns, car bells, surrounding voices, traffic signals, etc.), thereby reducing the probability of traffic accidents. For example, when the user wears the acoustic device, the entire or part of the acoustic device structure may be located on the front side of the helix 109 (e.g., Figure 1 The area J enclosed by the dashed line. For example, when a user wears the acoustic device, the entirety or part of the acoustic device may contact the upper part of the external auditory canal 101 (e.g., the location of one or more parts such as the crus of the helix 109, cymba conchae 103, triangular fossa 104, antihelix 105, scaphoid 106, and helix 107). For yet another example, when a user wears the acoustic device, the entirety or part of the acoustic device may be located within one or more parts of the ear (e.g., the cavity of the concha 102, cymba conchae 103, triangular fossa 104, etc.). Figure 1 The area M enclosed by the dashed line.

[0039] The description of the ear 100 above is for illustrative purposes only and is not intended to limit the scope of this application. Those skilled in the art can make various changes and modifications based on the description in this application. For example, the structure, shape, size, thickness, etc., of one or more parts of the ear 100 may differ for different users. As another example, part of the acoustic device's structure may cover part or all of the external auditory canal 101. These changes and modifications are still within the protection scope of this application.

[0040] Figure 2 This is a schematic diagram showing a frontal view of a user wearing an exemplary acoustic device according to some embodiments of this application. It will be understood that... Figure 2 The plane shown is parallel or substantially parallel to the sagittal plane of the user wearing the acoustic device.

[0041] In some embodiments, the acoustic device 200 may include a hook-shaped portion 210, a retaining portion 220, and a connecting portion 230. See also: [In some embodiments, see...] Figure 2 When a user wears the acoustic device 200, the hook-shaped portion 210 of the acoustic device 200 can be located on a first side of the user's ear 100 (e.g., the side of the user's ear 100 facing the user's head, also referred to as the back side of the ear 100) and at least partially in contact with the ear 100. The retaining portion 220 can be located on a second side of the user's ear 100 (e.g., the side of the user's ear 100 away from the user's head, also referred to as the front side of the ear 100) and at least partially in contact with the ear 100. The connecting portion 230 connects the hook-shaped portion 210 and the retaining portion 220, and the connecting portion 230 can extend from between the user's ear 100 and head toward the second side of the ear 100.

[0042] In some embodiments, when a 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 is not wearing the acoustic device 200, the distance between one or more contact areas (e.g., contact area A) of the hook portion 210 and one or more contact areas (e.g., contact area B) of the retaining portion 220 is smaller (e.g., along the extending 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 to provide a pressing force toward the first side and the second side of the ear 100, respectively, to "clamp" the acoustic device 200 on the ear 100.

[0043] To improve the stability of the acoustic device 200 when worn by the user, the pressure exerted by the hook portion 210 and the retaining portion 220 on the first and second sides of the ear 100 cannot be too small. However, excessive pressure can cause discomfort to the user's ears when wearing the acoustic device 200. Therefore, in some embodiments, the contact areas of the hook portion 210 and the retaining portion 220 with the ear 100 can be set as large as possible, or the contact areas can have the largest possible total contact area. This allows the pressure exerted by the acoustic device 200 on the ear 100 to be distributed across different contact points on the ear, reducing discomfort caused by excessive local force (or pressure) on the ear 100. In some embodiments, the hook portion 210 and the retaining portion 220 can be designed so that the surfaces opposite to the ear 100 completely conform to the user's ear 100, so that the hook portion 210 and the retaining portion 220 have the largest possible contact area with the ear 100, thereby reducing the pressure on the ear 100. However, due to the different shapes of ears among different types of users, it is difficult to design the hook portion 210 and the retaining portion 220 to perfectly fit the surface opposite the ear 100 of any type of user (such as a man, woman, or child). For example, some users have a shallower concha 103, while others have a deeper concha 103. If the hook portion 210 is designed to fit against the back (i.e., the first side) of the concha 103 of some users with shallower concha 103, when other users with deeper concha 103 wear the acoustic device 200, the hook portion 210 will be supported at the protrusion on the first side because the deeper concha 103 has a larger protrusion. This makes it difficult for other areas of the ear 100 to contact 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. These one or more non-contact areas may correspond to specific areas or more protruding areas of different types of users' ears, so as to avoid 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 enabling different types of users to have a good sense of comfort when wearing the acoustic device 200.

[0044] In some embodiments, to better match the ear shape of more users, the hook portion 210 can be designed with a unique curve to meet the comfort requirements of users wearing the acoustic device 200. In some embodiments, the hook portion 210 may include a first part and a second part with different curves. Different curve designs can result in different fits between the first part and the second part and the user's ear, thereby enabling the hook portion 210 of the acoustic device 200 to adapt to the ear shape of more users and improving the comfort of users wearing the acoustic device 200.

[0045] 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 portion 210, the stability of the acoustic device 200 worn by the user can be ensured while simultaneously improving the comfort of different types of users wearing the acoustic device 200. Further description of the one or more contact areas that contact the ear and non-contact areas that do not contact the ear on the hook portion 210 can be found in this application. Figure 6 And its related descriptions.

[0046] In some embodiments, to ensure that the hook-shaped portion 210 contacts the ear 100 as much as possible when different types of users wear the acoustic device 200, the acoustic device 200 may further include a plastic portion connected to the hook-shaped portion 210. This plastic portion is disposed between the hook-shaped portion 210 and the ear 100, and can undergo plastic deformation under external force, thereby deforming into a shape consistent with the contour of the ear 100, thus increasing the contact area between the acoustic device 200 and the ear 100 and dispersing the pressing force exerted on the ear 100 by the acoustic device 200. By providing the plastic portion, the acoustic device 200 can also be adapted to the ear shape of any type of user, improving the universality of the acoustic device 200.

[0047] To facilitate the description of the interrelationships of the various parts of the acoustic device (e.g., 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—sagittal plane, coronal plane, and horizontal plane—and the three basic axes—sagittal axis, coronal axis, and vertical axis—can be defined similarly to those in the medical field. See also Figures 1-2In this specification, the coordinate axes are defined as follows: The sagittal plane is a perpendicular section made along the front-to-back direction of the body, dividing the body into left and right parts. In this embodiment, the sagittal plane may refer to the YZ plane, meaning the X-axis is perpendicular to the user's sagittal plane. The coronal plane is a perpendicular section made along the left-to-right direction of the body, dividing the body into front and back parts. In this embodiment, the coronal plane may refer to the XZ plane, meaning the Y-axis is perpendicular to the user's coronal plane. The transverse plane is a parallel section made along the vertical direction of the body, dividing the body into upper and lower parts. In this embodiment, the transverse plane may refer to the XY plane, meaning the Z-axis is perpendicular to the user's transverse plane. Correspondingly, the sagittal axis is an axis perpendicular to the coronal plane along the front-to-back direction of the body. In this embodiment, the sagittal axis may refer to the Y-axis. The coronal axis is an axis perpendicular to the sagittal plane along the left-to-right direction of the body. In this embodiment, the coronal axis may refer to the X-axis. The vertical axis is an axis perpendicular to the horizontal plane along the vertical direction of the body. In this embodiment, the vertical axis may refer to the Z-axis.

[0048] It should be noted that, Figure 2 The acoustic device 200 shown is in a normal wearing state. Of course, due to individual differences among users, the actual wearing state of the acoustic device 200 may differ from the aforementioned normal wearing state. In some embodiments, the structure, shape, size, thickness, etc., of one or more parts of the ear 100 may differ for different types of users (e.g., adult males, adult females, minors, children, etc.). For example, part of the acoustic device's structure 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.

[0049] Figure 3 This is a schematic diagram of the structure of an exemplary acoustic device shown in some embodiments of this application when viewed from the back of the ear to the front of the ear. Figure 4 This is a schematic diagram of the structure of an exemplary acoustic device as seen from the top of a user's head, according to some embodiments of this application. Figure 5 This is a projection curve of an exemplary acoustic device in the YZ plane according to some embodiments of this application.

[0050] See Figures 3-4In some embodiments, the acoustic device 300 may include a hook-shaped portion 310, a retaining portion 320, and a connecting portion 330. When a user wears the acoustic device 300, the hook-shaped portion 310 can be hung between the user's ear and head, the retaining portion 320 contacts the second side of the ear, and the connecting portion 330 connects the hook-shaped portion 310 and the retaining 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 containing parts such as the cymba conchae (e.g., cymba conchae 103), triangular fossa (e.g., triangular fossa 104), antihelix (e.g., antihelix 105), scaphoid fossa (e.g., scaphoid fossa 106), and helix (e.g., helix 107). The back side of the user's ear refers to the side of the user's ear that is opposite to the front side, i.e., the side opposite to the front side.

[0051] In some embodiments, when a user wears the acoustic device 300, the hook-shaped portion 310 can at least partially contact a first side of the ear. In some embodiments, the hook-shaped portion 310 can include any shape suitable for the user, such as a hook shape, a C-shape, etc. In some embodiments, the hook-shaped portion 310 can have a certain elastic deformation capability, so that the hook-shaped portion 310 can deform under the action of external force, thereby displacing relative to the retaining portion 320, so that the hook-shaped portion 310 and the retaining portion 320 can cooperate to elastically clamp the ear. Thus, during the process of wearing the acoustic device 300, the user can first apply a little force to make the hook-shaped portion 310 deviate from the retaining portion 320, so that the ear can be inserted between the retaining portion 320 and the hook-shaped portion 310; after the wearing position is appropriate, release the hand 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.

[0052] In some embodiments, while the user is wearing the acoustic device 300, the hook portion 310 can be positioned in a direction perpendicular to the user's sagittal plane (e.g., Figure 3 The hook-shaped portion 310 deviates from the retaining portion 320 (in the X-axis direction shown) to generate a first pressing force on the first side of the ear. In some embodiments, the main direction of the first pressing force may be perpendicular to the user's sagittal plane. In some embodiments, during the wearing of the acoustic device 300, the hook-shaped portion 310 may also be positioned in a plane parallel to the user's sagittal plane (e.g., ...). Figure 3In the ZOY plane shown, the hook-shaped portion 310 is deflected relative to the retaining portion 320 with the highest point of the user's ear as the fulcrum (e.g., position CP1), causing the hook-shaped portion 310 to generate 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 a contact area on the hook-shaped portion 310 (e.g., other contact areas besides position CP1). In some embodiments, the position of application of the second pressing force can be the midpoint CP0 of the portion where the projection of the hook-shaped portion 310 in the X-axis direction (i.e., perpendicular to the user's sagittal plane) overlaps with the projection of the retaining portion 320 in the X-axis direction. In some embodiments, the position of application of the second pressing force can be the position corresponding to an arc segment of the hook-shaped portion 310 near position CP0, which corresponds to one of the contact areas of the hook-shaped portion 310. In some embodiments, the position of application of the second pressing force can be the arc segment corresponding to the portion where the projection of the hook-shaped portion 310 in the X-axis direction (i.e., perpendicular to the user's sagittal plane) overlaps with the projection of the retaining portion 320 in the X-axis direction (e.g., other contact areas besides position CP1). Figure 3 (The arc segments of CP2 to CP7 are shown). In some embodiments, the direction of the second clamping force can be perpendicular to the user's coronal plane (e.g., the Y-axis direction). In some embodiments, the first clamping force and the second clamping force can be measured when the user wears the acoustic device 300. In some embodiments, the first clamping force and the second clamping force can also be measured by simulating the force experienced by the user when wearing the device. For example, after measuring the distance by which the hook portion 310 deviates from the holding portion 320 in a direction perpendicular to the user's sagittal plane when the user wears the acoustic device 300, the first clamping force can be measured by making the hook portion 310 deviate from the holding portion 320 in the same direction. As another example, after measuring the distance by which the hook portion 310 deviates from the holding portion 320 in a direction perpendicular to the user's coronal plane when the user wears the acoustic device 300, the second clamping force can be measured by making the hook portion 310 deviate from the holding portion 320 in the same direction.

[0053] In some embodiments, to balance the secure fit and comfort of the user wearing the acoustic device 300, the first and second pressing forces of the hook-shaped portion 310 against 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 application of the first pressing force on the hook-shaped portion 310 (e.g., position CP1) and the holding portion 320 along a direction perpendicular to the user's sagittal plane (e.g., the X-axis direction). In some embodiments, the second pressing force can be set within a suitable range by adjusting the dimensions of the position of application of the second pressing force on the hook-shaped portion 310 (e.g., position CP0) and the connecting portion 330 (e.g., position CP3) along a direction perpendicular to the user's coronal plane (e.g., the Y-axis direction).

[0054] In some embodiments, the first pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.05 Newtons to 3 Newtons. In some embodiments, the first pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.08 Newtons to 2 Newtons. In some embodiments, the first pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.1 Newtons to 1 Newton. In some embodiments, the first pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.15 Newtons to 0.8 Newtons. In some embodiments, the first pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.2 Newtons to 0.6 Newtons. In some embodiments, the first pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.3 Newtons to 0.4 Newtons.

[0055] In some embodiments, the second pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.05 Newtons to 3 Newtons. In some embodiments, the second pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.1 Newtons to 2 Newtons. In some embodiments, the second pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.1 Newtons to 1 Newton. In some embodiments, the second pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.2 Newtons to 0.8 Newtons. In some embodiments, the second pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.3 Newtons to 0.7 Newtons. In some embodiments, the second pressing force of the hook-shaped portion 310 on the first side of the ear can be 0.4 Newtons to 0.6 Newtons.

[0056] In some embodiments, the hook-shaped 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 ending 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 along the X-axis direction on the hook-shaped portion 310. The starting point (CP2) of the second portion 312 is the ending point of the first portion 311, and the ending point (CP4) of the second portion 312 is the endpoint of the free end (the end away from the connecting portion 330) of the hook-shaped portion 310.

[0057] In some embodiments, the pressing force (e.g., a first pressing force and a second pressing force) exerted by the hook-shaped portion 310 on the first side of the ear can be applied to the user's ear by the first portion 311 and the second portion 312, respectively. In some embodiments, the first portion 311 and the projection of the retaining portion 320 onto the user's sagittal plane have an overlapping portion (e.g., Figure 3As shown in the arc segments corresponding to CP2 to CP7, when the user wears the acoustic device 300, the distance between the hook-shaped portion 310 and the retaining portion 320 corresponding to the overlapping portion changes the most. Therefore, when the user wears the acoustic device 300, the overlapping portion can generate a greater pressing force on the user's ear. With this setting, the pressing force provided by the retaining portion 320 to the first portion 311 can be greater than the pressing force provided by the retaining portion 320 to the second portion 312.

[0058] In some embodiments, when a user wears the acoustic device 300, the hook-shaped portion 310 also generates friction against the ear to overcome the tendency of the acoustic device 300 to rotate relative to the ear due to the wearing operation. In some embodiments, different portions of the hook-shaped portion 310 exert different frictional forces on the ear. In some embodiments, the first portion 311 and the second portion 312 exert different frictional forces on the ear. In some embodiments, the second portion 312 has a rougher surface compared to the first portion 311. In some embodiments, the surface friction coefficient of the second portion 312 can be 1.1 to 4 times that of the first portion 311. In some embodiments, the surface friction coefficient of the second portion 312 can be 1.5 to 4 times that of the first portion 311. In some embodiments, the surface friction coefficient of the second portion 312 can be 2 to 4 times that of the first portion 311. Since the hook-shaped 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-shaped portion 310 and the ear, the greater the total frictional force between the hook-shaped portion 310 and the ear. In some embodiments, the second portion 312 may have a larger contact area with the ear compared to the first portion 311, such that the frictional force of the second portion 312 on the ear is greater than that 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 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.

[0059] For a clearer explanation of Part 1, 311 and Part 2, 312, see [link to relevant documentation]. Figure 5 The first part 311 and the second part 312 can be described by the projection curve of the hook part 310 on the user's sagittal plane (i.e., the projection curve of the hook part 310 on the YZ plane).

[0060] See Figure 5In some embodiments, the projection of the first portion 311 of the hook-shaped portion 310 onto the user's sagittal plane has a first curve, i.e. Figure 5 The curve CBAD shown is an example. In some embodiments, the first curve may be the curve corresponding to the axis of the first portion 311. The starting point C of the first curve CBAD, corresponding to the position of the acoustic device 300, may be the connection point between the first portion 311 of the hook-shaped portion 310 and the connecting portion 330 (e.g., ...). Figure 3 (As shown in CP3). The endpoint D of the first curve CBAD corresponds to the position of the acoustic device 300, which may be the endpoint of the first part 311 (e.g., CP3). Figure 3 (CP2 shown).

[0061] In some embodiments, in the YOZ coordinate system, the first curve CBAD can be described by formula (1):

[0062] f(y) = P1 × y 6 +P2×y 5 +P3×y 4 +P4×y 3 +P5×y 2 +P6×y+P7, formula (1)

[0063] 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.

[0064] In some embodiments, based on the functional relationship between Z (i.e., f(y)) and y, the first derivative of formula (1) is taken to obtain the point where the first derivative of curve f(y) is zero, also called the extreme point of the curve. In some embodiments, the extreme point of the fitted curve f(y) corresponding to the first curve CBAD may include the first extreme point, that is, the first curve CBAD has the 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 the 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. The Z-axis direction is denoted as the first direction, that is, the first curve CBAD has the 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 holding part 320, and the extension direction of the holding part 320 refers to the direction pointed to by the free end of the holding part 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 can be the direction of the Z-axis. In some embodiments, the first extreme point B can be the maximum point of the curve Z = f(y) in formula (1) in the Z-axis direction. In some embodiments, the position of the first extreme point B corresponding to the hook part 310 when it is hung on the user's ear can be the highest point of the hook part 310 in the first direction (e.g., Figure 3 As shown in CP1). In some embodiments, the fitted curve f(y) corresponding to the first curve CBAD has one and only one extreme point B in the first direction. This setting makes it easier to set the extreme point B and the curvature change of the curve near the extreme point B, making the curve design of the hook part 310 more accurate.

[0065] In some embodiments, when a 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 (e.g., the highest point of the helix to the connection point between the ear and the head). At this contact point, the ear can also provide a supporting force to balance the weight of the acoustic device 300, thereby providing stability when wearing the acoustic device 300.

[0066] It should be noted that the fitting function of formula (1) and its corresponding coefficients P_1 to P_7 are only a fitting expression for the curve design when the first part 311 has a first extreme point near the highest point CP1. 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 variables in the fitting expression, the coefficients of each order variable, or the type of the fitting function according to the actual situation so that the curve corresponding to the first part 311 has a maximum point near CP1. These fitting results should all be included within the scope of the embodiments in this specification.

[0067] In some embodiments, the outer diameter of the cross-section of the second portion 312 may be larger 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-out (or similar) structure, 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 terms of wearing. In some embodiments, see Figure 5 The projection of the second part 312 onto the user's sagittal plane has a second curve, namely Figure 5 The curve DFE shown is illustrated. In some embodiments, the second curve may be the 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-shaped portion 310 (e.g., Figure 3 (as shown in CP2). 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 may be the intersection of the bottom edge of the retaining part 320 away from the connecting part 330 in a cross-sectional direction perpendicular to the user and the projection of the hook-shaped part 310 onto the user's sagittal plane. The endpoint E of the second curve DFE, corresponding to the position of the acoustic device 300, may be the endpoint of the free end (the end away from the connecting part 330) of the hook-shaped part 310 (e.g., the end point of the hook-shaped part 310 away from the connecting part 330). Figure 3 (as shown in CP4). In some embodiments, the projection of the end point (i.e., endpoint E) of the second curve DFE and the first extreme point (point B) of the first curve CBAD along the first direction (Z-axis direction) can approximately coincide. This approximately coincidence can mean that 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 located at... Figure 3On the first reference surface RP1, the first reference surface RP1 can be a reference surface that passes through the first extreme point B of the first curve CBAD and is parallel to the XZ plane. With this setting, the hook-shaped part 310 can have higher symmetry about the XY plane, the overall structure is more balanced, the matching degree between the acoustic device 300 and the ear is improved, and the comfort and stability of the acoustic device 300 in terms of wearing are improved.

[0068] In some embodiments, the second curve DFE can be described by formula (2):

[0069] f(y) = Q1 × y 4 +Q2×y 3 +Q3×y 2 +Q4×y+Q5, formula (2)

[0070] Where, Q1 = 3.931 × 10 -3 Q2 = 5.546 × 10 -2 Q3 = 2.974 × 10 -1 Q4 = 9.822 × 10 -2 Q5 = -25.41.

[0071] In some embodiments, based on the functional relationship between Z (i.e., f(y)) and y, the first derivative of expression (2) can be taken to determine the point where the first derivative of curve f(y) is 0, also called the extreme point of the curve. In some embodiments, the extreme point of the fitted curve f(y) corresponding to the second curve DFE may include the 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. The Z-axis direction is denoted 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 endpoint E of the second curve DFE. In some embodiments, along the Y-axis, the distance between the second extreme point F of the second curve DFE and the endpoint E can be 0.01 mm to 5 mm. In some embodiments, along the Y-axis, the distance between the second extreme point F of the second curve DFE and the endpoint E can be 0.02 mm to 4 mm. In some embodiments, along the Y-axis, the distance between the second extreme point F of the second curve DFE and the endpoint E can be 0.03 mm to 3 mm. In some embodiments, along the Y-axis, the distance between the second extreme point F of the second curve DFE and the endpoint E can be 0.04 mm to 2 mm. In some embodiments, the position of the second extreme point F on the second part 312 can be the recessed position near the earlobe 108 when the acoustic device 300 is hung on the user's ear. By setting the second extreme point at position F near the free end E of the second part 312, a hook-like structure can be formed in the FE segment of the second part 312. When the user wears the acoustic device 300, the hook-like structure formed by the FE segment can hook onto the recessed part of the earlobe, 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 one and only one extreme point F in the first direction. This setting makes it easier to set the extreme point F and the curvature change of the curve near the extreme point F, making the curve design of the hook part 310 more accurate.

[0072] It should be noted that the fitting function of formula (2) and its corresponding coefficients Q_1 to Q_5 are only a fitting expression for the curve design when the second part 312 has a minimum point near the free end. 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 variables in the fitting expression, the coefficients of each order variable, or the type of the fitting function according to the actual situation so that the curve corresponding to the second part 312 has a minimum point near the free end. These fitting results should all be included within the scope of the embodiments in this specification.

[0073] In some embodiments, the first portion 311 and the second portion 312 of the hook-shaped portion 310 are connected at connection point CP2 to form the hook-shaped portion 310. Thus, the first curve CBAD and the second curve DFE can also be connected at connection point D to form the projection curve CDE of the hook-shaped portion 310 on the user's sagittal plane (e.g., parallel to the YZ plane). In some embodiments, to increase the contact area between the hook-shaped portion and the ear at connection point CP2, the curvature of curve CDE at connection point D can be set as small as possible so that the hook-shaped portion 310 has a smoother curve change near the location corresponding to connection point CP2, thereby dispersing the second pressing force on the ear near this location when the user wears the acoustic device 300, and improving the user's wearing comfort. In some embodiments, the curvature at connection point D may be less than 0.1. In some embodiments, the curvature at connection point D may be less than 0.08. In some embodiments, the curvature at connection point D may be less than 0.06. In some embodiments, the curvature at connection point D may be less than 0.04.

[0074] In some embodiments, since the projection curve of the user's ear contour onto the user's sagittal plane is often not a smooth curve, but an irregular curve with concavity and convexity variations, the curve corresponding to the hook portion 310 (e.g., the first curve CBAD and / or the second curve DFE) can also have corresponding concavity and convexity variations in order to increase the contact area between the hook portion 310 and the ear. In some embodiments, corresponding inflection points can be designed for the first curve CBAD and / or the second curve DFE to make the hook portion 310 also have corresponding concavity and convexity variations. For example, there is a slight depression in the cartilage near the highest point of the ear along the Z-axis direction. This depression changes the concavity and convexity of the projection curve of the ear contour onto the user's sagittal plane near that location, that is, the projection curve of the ear onto the user's sagittal plane has an inflection point at this location. 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 recess. This allows the hook-shaped portion 310 to have a larger contact area with the ear near the highest point of the user's ear along the Z-axis when the user wears the acoustic device 300. This disperses the force exerted by the acoustic device 300 on the ear (such as gravity, the first pressing force, etc.), reduces the pressure of the acoustic device 300 on the local contact area of ​​the ear (the contact area between the highest point CP1 and the area near the highest point of the ear), and improves the user's wearing comfort. For example, because there is a recess near the earlobe, this recess changes the concavity and convexity of the ear contour near the earlobe, that is, the ear contour line has an inflection point at this location. By designing the curve of the hook portion 310, the curve DFE of the second part 312 of the hook portion 310 can also have an inflection point corresponding to the recess, so that when the user wears the acoustic device 300, the second part 312 of the hook portion 310 can contact the user's ear (especially near the earlobe) as much as possible, thereby increasing the friction between the second part 312 and the first side of the ear.

[0075] In some embodiments, see Figures 3-4 The connecting portion 330 connects the hook-shaped portion 310 and the retaining portion 320, and extends from a first side of the user's ear to a second side of the user's ear. The connecting portion 330 connects with the hook-shaped portion 310 and the retaining portion 320, such that the retaining portion 320 provides a pressing force on the first side of the ear to the hook-shaped portion 310, and the hook-shaped portion 310 provides a pressing force on the second side of the ear 100 to the retaining portion 320.

[0076] In some embodiments, the connecting portion 330 can be used to connect the hook-shaped portion 310 and the retaining portion 320. Specifically, a first end of the connecting portion 330 can be connected to the hook-shaped portion 310, and a second end of the connecting portion 330 can be connected to the retaining portion 320. In some embodiments, the connection between the hook-shaped 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 retaining portion 320 can include a fixed connection or a movable connection. In some embodiments, the relative positional relationship between the hook-shaped portion 310 and the connecting portion 330, and between the connecting portion 330 and the retaining portion 320 in three-dimensional space can be adjusted to allow the acoustic device 300 to adapt to different users and increase the applicability of the acoustic device 300. For example, the connecting portion 330 can be made of a deformable material such as soft steel wire. By bending the connecting portion 330 to rotate one part relative to the other part, the relative position of the hook-shaped portion 310, the connecting portion 330, and / or the retaining portion 320 in three-dimensional space can be adjusted to meet the user's wearing needs. In some embodiments, the parameters of the connecting portion 330 (e.g., shape, length, thickness, etc.) can be set according to specific circumstances to adapt to ears of different thicknesses and shapes.

[0077] In some embodiments, the portion of the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320) that contacts the user's ear may be made of a softer material, a harder material, or a combination thereof. A softer material is one whose hardness (e.g., Shore hardness) is less than a first hardness threshold (e.g., 15A, 20A, 30A, 35A, 40A, etc.). For example, a softer material may have a Shore hardness of 45-85A or 30-60D. A harder material is one whose hardness (e.g., Shore hardness) is greater than a second hardness threshold (e.g., 65D, 70D, 80D, 85D, 90D, etc.). Softer materials may include, but are not limited to, polyurethanes (PU) (e.g., thermoplastic polyurethane elastomer rubber (TPU)), polycarbonate (PC), polyamides (PA), acrylonitrile butadiene styrene copolymer (ABS), polystyrene (PS), high impact polystyrene (HIPS), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyurethanes (PU), polyethylene (PE), phenolic resin (PF), urea-formaldehyde resin (UF), melamine-formaldehyde resin (MF), silicone, and combinations thereof. The harder materials may include, but are not limited to, poly(estersulfones) resin (PES), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA), polyether-ether-ketone (PEEK), or combinations thereof, or mixtures thereof with reinforcing agents such as glass fiber and carbon fiber. In some embodiments, the material of the part of the acoustic device 300 that contacts the user's ear (and / or the hook-shaped part 310, the retaining part 320) can be selected according to 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, while harder materials can improve the strength of the acoustic device 300. By reasonably configuring the materials of each component of the acoustic device 300, the strength of the acoustic device 300 can be improved at the same time as improving the user's comfort.

[0078] In some embodiments, the interior of the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320) of the acoustic device 300 may be provided with an elastic filament structure to improve the structural strength of the acoustic device 300. Both the softer and harder materials described above can be used to cover the elastic filament structure. In some embodiments, the elastic filament structure may include metal wires (e.g., spring steel, titanium alloy, titanium-nickel alloy, chromium-molybdenum steel, aluminum alloy, copper alloy, etc.), fiber filaments (e.g., glass fiber, carbon fiber, etc.), or combinations thereof. In some embodiments, the elastic filament structure (such as metal wire) provided inside the connecting portion 330 (and / or the hook-shaped portion 310, the retaining portion 320) can 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 wires can be set according to actual needs (e.g., the diameter of the acoustic device components, the strength requirements of the acoustic device components, etc.). The shape of the wire can include any suitable shape, such as cylinder, cube, cuboid, prism, elliptical cylinder, etc.

[0079] In some embodiments, to improve the fit between different types of users' ears and the acoustic device 300, and further enhance the comfort and stability of the acoustic device 300 during wear, the dimensions of the connecting portion 330 can be reasonably set. In some embodiments, the dimensions of the connecting portion 330 may include the height of the connecting portion 330 along a direction perpendicular to the user's cross-section (Z-axis direction) and the depth of the connecting portion 330 along a direction perpendicular to the user's sagittal plane (X-axis direction). In some embodiments, the height of the connecting portion 330 along the Z-axis direction may be the distance along the Z-axis between the connection point of the connecting portion 330 to the hook-shaped portion 310 and the connection point of the connecting portion 330 to the retaining portion 320. In some embodiments, the depth of the connecting portion 330 along the X-axis direction may be the distance along the X-axis between the connection point of the connecting portion 330 to the hook-shaped portion 310 and the connection point of the connecting portion 330 to the retaining portion 320. In some embodiments, see... Figure 3 The dimension d_1 of the connecting portion 330 along the direction perpendicular to the user's cross-section (Z-axis direction) can range from 0.36 mm to 4.76 mm. See also the following in some embodiments: Figure 3The dimension d_1 of the connecting portion 330 along the direction perpendicular to the user's cross-section (Z-axis direction) can range from 0.56 mm to 4.56 mm. See also the following in some embodiments: Figure 3 The dimension d_1 of the connecting portion 330 along the direction perpendicular to the user's cross-section (Z-axis direction) can range from 1.06 mm to 4.06 mm. See also the following in some embodiments: Figure 3 The dimension d_1 of the connecting portion 330 along the direction perpendicular to the user's cross-section (Z-axis direction) can range from 1.56 mm to 3.56 mm. See also the following in some embodiments: Figure 3 The dimension d_1 of the connecting portion 330 along the direction perpendicular to the user's cross-section (Z-axis direction) can range from 2.06 mm to 3.06 mm. See also the following in some embodiments: Figure 3 The dimension d_1 of the connecting part 330 along the direction perpendicular to the user's cross section (Z-axis direction) can range from 2.36 mm to 2.76 mm.

[0080] In some embodiments, see Figure 3 The dimension d_2 of the connecting portion 330 along the direction perpendicular to the user's sagittal plane (X-axis direction) can range from 2 mm to 5 mm. See also the following in some embodiments: Figure 3 The dimension d_2 of the connecting portion 330 along the direction perpendicular to the user's sagittal plane (X-axis direction) can range from 2.3 mm to 4.7 mm. See also the following in some embodiments: Figure 3 The dimension d_2 of the connecting portion 330 along the direction perpendicular to the user's sagittal plane (X-axis direction) can range from 2.5 mm to 4.5 mm. See also the following in some embodiments: Figure 3 The dimension d_2 of the connecting portion 330 along the direction perpendicular to the user's sagittal plane (X-axis direction) can range from 2.7 mm to 4.3 mm. See also the following in some embodiments: Figure 3 The dimension d_2 of the connecting portion 330 along the direction perpendicular to the user's sagittal plane (X-axis direction) can range from 3 mm to 4 mm. See also the following embodiments: Figure 3 The dimension d_2 of the connecting part 330 along the direction perpendicular to the user's sagittal plane (X-axis direction) can range from 3.3 mm to 3.7 mm.

[0081] In some embodiments, see Figure 3 and Figure 5 The connection point CP3 between the connecting portion 330 and the hook-shaped portion 310 has a first projection point CP5 on the hook-shaped portion 310 along the second direction (Y-axis direction) in the YZ plane. The first projection point CP5 corresponds to Figure 5Point A in the first curve CBAD. 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 of the connection portion 330 and the hook portion 310 (i.e. Figure 5 The distance between point C and the first extreme point B of the first curve CBAD along the second direction can be equal to the distance between the first projection point CP5 (i.e., point C). Figure 5 The distance between point A in the middle curve and the first extreme point B of the first curve CBAD along the second direction. That is... Figure 5 The projection length of curve CB in the Y-axis direction is equal to the projection length of curve BA in the Y-axis direction. In this configuration, 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 point between the highest point of the helix and the top of the ear and the head). 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), which improves 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 terms of wearing.

[0082] It should be noted that the projected length of curve CB in the Y-axis direction can also be different from that of curve BA in the Y-axis direction. For example, the projected length of curve CB in the Y-axis direction may be slightly greater than or less than (e.g., the difference between the two lengths is within ±1 mm) the projected length of curve BA in the Y-axis direction. In some embodiments, the projected lengths of curve CB and curve BA in the Y-axis direction can also be set according to actual needs (e.g., the ear shape of different types of users), and are not further limited here.

[0083] In some embodiments, to improve the applicability of the acoustic device 300, the connection point CP3 between the connecting portion 330 and the hook-shaped portion 310 ( Figure 5 The distance between point C and the first extreme point B of the first curve CBAD 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, the connection point CP3 between the connecting part 330 and the hook-shaped part 310 ( Figure 5 The distance between point C and the first extreme point B along the second direction (Y direction) can be 7 mm to 12 mm. In some embodiments, the connection point CP3 between the connecting part 330 and the hook-shaped part 310 is... Figure 5 The distance between point C and the first extreme point B along the second direction (Y direction) can be 7.5 mm to 11.5 mm. In some embodiments, the connection point CP3 between the connecting part 330 and the hook-shaped part 310 ( Figure 5 The distance between point C and the first extreme point B along the second direction (Y direction) can be 8 mm to 11 mm. In some embodiments, the connection point CP3 between the connecting part 330 and the hook-shaped part 310 is... Figure 5 The distance between point C and the first extreme point B along the second direction (Y direction) can be 8.5 mm to 10.5 mm. In some embodiments, the connection point CP3 between the connecting part 330 and the hook-shaped part 310 ( Figure 5 The distance between point C and the first extreme point B along the second direction (Y direction) can be 9 mm to 10 mm.

[0084] In some embodiments, see Figures 3-4 The retaining portion 320 can at least partially contact the second side of the user's ear. In some embodiments, the retaining portion 320, under the action of the hook-shaped portion 310, can exert a pressing force on the second side of the user's ear, that is, the hook-shaped portion 310 can 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 can press against the areas where the concha (e.g., concha 103), triangular fossa (e.g., triangular fossa 104), antihelix (e.g., antihelix 105), etc., are located, so that when the user wears the acoustic device 300, the acoustic device 300 does not obstruct the external auditory canal (e.g., external auditory canal 101).

[0085] In some embodiments, the retaining portion 320 can not only press against the second side of the user's ear under the action of a clamping force, but can also extend further and be retained within the cymba conchae and / or triangular fossa of the ear. In some embodiments, the extending direction of the retaining portion 320 can be along the Y-axis direction. In this configuration, the retaining portion 320 can 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 flipping outward when the acoustic device 300 is in the wearing state, thereby improving the stability of the acoustic device 300 in terms of wearing.

[0086] In some embodiments, the acoustic device 300 may further include a mechanism assembly 340, a motherboard assembly 350, a battery assembly 360, or combinations thereof. Any two of the mechanism assembly 340, motherboard assembly 350, and battery assembly 360 can communicate in various ways, such as wired connection, wireless connection, or combinations thereof. In some embodiments, a wired connection may include a metal cable, an optical cable, or a hybrid cable of metal and optics. The examples described above are for illustrative purposes only; the medium for a wired connection may also be of other types, such as other carriers for transmitting electrical or optical signals. Wireless connections may include radio communication, free-space optical communication, acoustic communication, and electromagnetic induction.

[0087] In some embodiments, the mechanism assembly 340 can be used to convert a signal containing audio information (e.g., an electrical signal) into corresponding mechanical vibrations to generate a sound signal. The audio information may include video or audio files with a specific data format, or data or files that can be converted into sound through a specific method. The signal containing audio information may include one or more combinations of electrical signals, optical signals, magnetic signals, and mechanical signals. The processing may include frequency division, filtering, noise reduction, amplification, smoothing, or combinations thereof. The conversion process may involve the coexistence and conversion of multiple different types of energy. For example, an electrical signal can be directly converted into mechanical vibrations by the mechanism assembly to generate sound. As another example, audio information may be contained in an optical signal, and a specific earphone mechanism can realize the process of converting an optical signal into a vibration signal. In some embodiments, the mechanism assembly 340 may be disposed in the holding portion 320. In some embodiments, the mechanism assembly 340 may, under the action of a clamping force, approach the front side of the tragus (e.g., the side containing the tragus 109, cymba conchae 103, triangular fossa 104, antihelix 105, scaphoid 106, and helix 107) of the user's ear. In some embodiments, the mechanism assembly 340 may approach the second side of the user's ear (e.g., the side containing the tragus 109, cymba conchae 103, triangular fossa 104, antihelix 105, scaphoid 106, and helix 107). For example, the mechanism assembly 340 may contact one or more parts of the upper part of the user's external auditory canal (e.g., the cymba conchae 103, triangular fossa 104, antihelix 105, scaphoid 106, and helix 107).

[0088] The motherboard assembly 350 can be used to control the sound output of the mechanism assembly 340. In some embodiments, the motherboard assembly 350 can control the sound output of the mechanism assembly 340 according to user input instructions. In some embodiments, the motherboard assembly 350 can generate instructions to control the mechanism assembly 340 based on information from one or more components of the acoustic device 300. For example, the motherboard assembly 350 can receive a user's voice signal, such as "play a song." By processing this voice signal, the motherboard assembly 350 will generate control instructions related to this voice signal, such as controlling the mechanism assembly 340 to retrieve the song information to be played from the storage module (or other device) and generating an electrical signal to control the vibration of the mechanism assembly 340 accordingly. In some embodiments, the motherboard assembly 350 can control other components of the acoustic device 300. For example, the motherboard assembly 350 can generate control instructions to control the battery assembly 360 to provide electrical power to the acoustic device 300 to generate sound.

[0089] In some embodiments, the motherboard component 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, or any combination thereof.

[0090] In some embodiments, the motherboard assembly 350 can be disposed at any location of the acoustic device 300. For example, the motherboard assembly 350 can be disposed at the holding portion 320. In this case, the trace distance between the motherboard assembly 350 and other components disposed on the holding portion 320 (e.g., mechanism assembly 340, push-button switch, etc.) can be shortened to reduce signal interference between traces and reduce the possibility of short circuits between traces.

[0091] Battery assembly 360 can be used to provide power to other components in acoustic device 300. In some embodiments, battery assembly 360 may include a flexible circuit board, a battery, etc. The flexible circuit board is used to connect the battery to other components in the acoustic device (e.g., mechanism assembly 340). The battery may include a rechargeable battery, a dry cell battery, a lithium battery, a Daniell battery, or a fuel cell, or a combination thereof. In some embodiments, battery assembly 360 may also transmit its own status information to motherboard assembly 350 and receive instructions from motherboard assembly 350 to perform corresponding operations. The status information of battery assembly 360 may include on / off state, remaining charge, remaining charge usage time, charging time, etc., or a combination thereof.

[0092] In some embodiments, the battery assembly 360 can be disposed at any location within the acoustic device 300. In some embodiments, the positions of one or more components in the acoustic device 300 can be adjusted according to the weight of each part of the acoustic device 300 to balance the weight of each part and improve the wearing stability and comfort of the acoustic device 300. For example, the movement assembly 340, the mainboard assembly 350, and the push-button switch can be disposed on the retaining portion 320. The battery assembly 360 can be disposed on the second portion 312 of the hook-shaped portion 310, such that a lever balance is formed between the second portion 312 and the retaining portion 320, improving the wearing stability of the acoustic device 300.

[0093] In some embodiments, when a lever balance is formed between the second portion 312 and the retaining portion 320, the fulcrum of the lever can 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 retaining portion 320 and its highest point CP1 is different from the distance between the center of gravity of the battery assembly 360 and its highest point CP1, the total weight of the retaining portion 320 and the weight of the battery assembly 360 can be different. In some embodiments, the ratio between the total weight of the retaining portion 320 and the weight of the portion of the hook-shaped portion 310 that includes the battery assembly 360 (also referred to as the battery portion) can be within 4:1. In some embodiments, the ratio between the total weight of the retaining portion 320 and the weight of the battery portion can be within 3:1. In some embodiments, the ratio between the total weight of the retaining portion 320 and the weight of the battery portion can be within 2.5:1. In some embodiments, the ratio between the total weight of the retaining portion 320 and the weight of the battery portion can be 2:1. In some embodiments, the ratio between the total weight of the retaining part 320 and the weight of the battery part can be within 1.5:1, so that the weight of the acoustic device 300 can be more evenly distributed at both ends. When the user wears the acoustic device 300, the user's ear can act as a fulcrum to support the acoustic device 300, so that the acoustic device 300 does not slip off the user's ear.

[0094] In some embodiments, the acoustic device 300 may further include a sound outlet 370 and a pressure relief hole 380 disposed on the retaining portion 320. In some embodiments, sound emitted by the mechanism assembly 340 can be transmitted to the user's ear via the sound outlet 370. In some embodiments, the retaining portion 320 may form a front cavity and a rear cavity of the acoustic device 300 on opposite sides of the mechanism assembly 340, respectively, with the sound outlet 370 communicating with the front cavity and outputting sound to the ear. In some embodiments, the pressure relief hole 380 communicates with the rear cavity and is further away from the ear canal than the sound outlet 370. Thus, the pressure relief hole 380 allows air to freely enter and exit the rear cavity, so that changes in air pressure in the front cavity are not blocked by the rear cavity as much as possible, thereby improving the sound quality of the sound output to the ear via the sound outlet 370. Furthermore, since the sound output to the outside of the acoustic device 300 through the sound outlet 370 and the pressure relief hole 380 is out of phase, it cancels out in the far field away from the ear, thus forming an "acoustic dipole". This effectively reduces the volume of the far field sound (e.g., the sound transmitted into the environment) without reducing the volume of the near field sound (e.g., near the user's ear canal), thereby reducing sound leakage.

[0095] In some embodiments, by adjusting the distance between the first side 321 of the retaining portion 320 near the first extreme point B of the first curve CBAD and the first extreme point B of the first curve CBAD in the user's sagittal plane projection, the fit 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 retaining portion 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 retaining portion 320 and the first extreme point B can be 6 mm to 13 mm. In some embodiments, the distance between the first side 321 of the retaining portion 320 and the first extreme point B can be 7 mm to 11 mm. In some embodiments, the distance between the first side 321 of the retaining portion 320 and the first extreme point B can be 8 mm to 10 mm. In some embodiments, the distance between the first side 321 of the retaining portion 320 and the first extreme point B can be 8.5 mm to 9.5 mm. In some embodiments, the distance between the first side 321 of the retaining part 320 and the first extreme point B can be 8 mm to 9 mm.

[0096] Figure 6 This is a schematic diagram of a rear-view perspective of a user wearing an exemplary acoustic device, according to some embodiments of this application.

[0097] In some embodiments, see Figure 6 When a user wears the acoustic device 300, the hook-shaped portion 310 wraps around a first side of the ear (such as the back of the ear) along the contour of the user's ear. At least a portion of the first part 311 of the hook-shaped portion 310 contacts the first side of the ear, such that the first part 311 may have one or more contact areas that contact the first side of the ear (e.g., a first contact area B1, a second contact area B2, etc.), and one or more non-contact areas that do not contact the first side of the ear (e.g., a first non-contact area D1, a second non-contact area D2, etc.).

[0098] In some embodiments, the first portion 311 bends towards a 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, thereby forming one or more contact areas on the first portion 311 that contact the first side of the ear. In some embodiments, the contact areas formed on the first portion 311 may include a plurality of contact areas spaced apart. 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, i.e., the first contact point coincides with the first extreme point. In some embodiments, the contact area of ​​the first portion 311 may include the 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. In some embodiments, the contact area of ​​the first portion 311 (e.g., the first contact area B1) may also include a second contact point. In some embodiments, the second contact point may be the connection point between the first portion 311 and the second portion 312. In some embodiments, the second contact point may be the 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 portion 311 may also include contact areas disposed at other locations of the first portion 311, for example, the first portion 311 corresponds to a relatively smooth position where the acoustic device 300 is hung on the ear.

[0099] In some embodiments, each of the plurality of 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 area of ​​the same contact area among the contact areas of the first portion 311 may be different. For example, when an adult male with relatively thick 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 relatively thin ears wears the acoustic device 300.

[0100] In some embodiments, the wearing comfort of the acoustic device 300 can be improved by adjusting the number of contact areas or the total contact area of ​​the hook portion 310 that contact the ear. In some embodiments, the first portion 311 of the hook portion 310 may have more contact areas with the ear or a larger total contact area, thereby distributing the pressure of the acoustic device 300 on the ear to different locations on the ear, reducing discomfort caused by excessive local force (or pressure) on the ear, and improving the wearing comfort of the acoustic device 300.

[0101] In some embodiments, due to the different ear shapes of different types of users, it is difficult to design the first portion 311 of the hook-shaped portion 310 to fit perfectly against the ear of any type of user. Therefore, one or more non-contact areas that do not contact the first side of the ear can be provided on the first portion 311. These one or more non-contact areas can correspond to specific areas of different types of user ears, avoiding the situation where the first portion is pushed away from the ear due to the different ear shapes of different types of users, resulting in a smaller contact area between the first portion 311 and the ear. This allows different types of users to have good comfort when wearing the acoustic device 300. In some embodiments, the non-contact areas formed on the first portion 311 may include multiple non-contact areas (e.g., a first non-contact area D1 and a second non-contact area D2) spaced apart. In some embodiments, the first non-contact area D1 may be the 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 may be the position corresponding to the dorsal protrusion of the 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 portion 311 can be alternately distributed. In some embodiments, by providing contact and non-contact areas on the first portion 311, the pressing force of the first portion 311 on the first side of the ear can be taken into account, while avoiding discomfort caused by greater local force (or pressure) in specific areas of the user's ear.

[0102] In some embodiments, the second portion 312 of the hook-shaped portion 310 bends towards the first side surface of the ear in the X-axis direction from its starting point to its free end endpoint, thereby forming one or more contact areas on the second portion 312 that contact the first side of the ear. In some embodiments, the contact area of ​​the second portion 312 may include a third contact point, which may be the position of the second portion 312 corresponding to the second extreme point F, i.e., the third contact point coincides with the second extreme point. In some embodiments, the contact area of ​​the second portion 312 may include the area where the third contact point is located, i.e., the area near the position point (such as the second inflection point) of the free end endpoint of the second portion 312. It should be understood that the second contact point is the connection point between the first portion 311 and the second portion 312; therefore, the contact area of ​​the second portion 312 may also include the second contact point. In some embodiments, to ensure the stability of the contact between the second portion 312 and the user's ear, the contact area of ​​the second portion 312 may also include a fourth contact point, which is located between the second contact point and the third contact point. In some embodiments, to further improve the stability of the contact between the second portion 312 and the user's ear, the fourth contact point may be located closer to the third contact point, that is, the fourth contact point may be located between the midpoint of the second portion 312 and the third contact point. In some embodiments, the contact area of ​​the second portion 312 may also include other locations of the second portion 312, for example, the second portion 312 may correspond to a relatively smooth position where the acoustic device 300 is hung on the ear.

[0103] In some embodiments, one or more non-contact areas that do not contact the ear may also be provided on the second portion 312 of the hook-shaped portion 310. In some embodiments, the non-contact areas on the second portion 312 may be provided when the user wears the acoustic device 300, with the second portion 312 corresponding to the protruding edge of the concha cavity on the first side of the ear. The location of the non-contact areas of the exemplary second portion 312 may be as follows: Figure 3The area where position CP6 is shown. In some embodiments, when a user wears the acoustic device 300, discomfort may easily occur at the protruding edge of the concha 102 on the first side of the ear. In this case, a non-contact area is provided in the second portion 312 corresponding to the protruding edge of the concha 102 on the first side of the ear, which can prevent the acoustic device 300 from contacting the protruding edge, thereby avoiding discomfort at the protruding edge. In some embodiments, in order to take into account the comfort of different types of users in terms of wearing, the arc length of the non-contact area of ​​the second portion 312 (such as the area where position CP6 is located) along the extension direction of the second portion 312 can be 1 mm to 3 mm. In some embodiments, the arc length of the non-contact area of ​​the second portion 312 (such as the area where position CP6 is located) along the extension direction of the second portion 312 can be 1.5 mm to 2.5 mm. In some embodiments, the arc length of the non-contact area of ​​the second portion 312 (such as the area where position CP6 is located) along the extension direction of the second portion 312 can be 1.8 mm to 2.2 mm.

[0104] In some embodiments, the non-contact areas on the first portion 311 and / or the second portion 312 can provide suitable space for the ear (especially a thicker ear), preventing pressure on the ear when the acoustic device 300 is worn. However, a large distance between the non-contact areas and the first side of the ear can also affect the stability of wearing the acoustic device 300. Therefore, in some embodiments, to ensure the stability of wearing the acoustic device 300, the distance between the non-contact areas and the first side of the ear may not exceed 5 mm. In some embodiments, to ensure the stability of wearing the acoustic device 300, the distance between the non-contact areas and the first side of the ear may not exceed 4 mm. In some embodiments, to ensure both stability and comfort when wearing the acoustic device 300, the distance between the non-contact areas and the first side of the ear may not exceed 3 mm. In some embodiments, to ensure the stability of wearing the acoustic device 300 and to allow the acoustic device 300 to have a smaller size, the distance between the non-contact areas and the first side of the ear may not exceed 2 mm. In some embodiments, to ensure the stability of wearing the acoustic device 300 while reducing the impact of the acoustic device 300 on the user's head, the distance between the non-contact area and the first side of the ear may not exceed 1.5 mm. In some embodiments, 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.

[0105] 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 the comfort of different types of users wearing the acoustic device 300 can be improved.

[0106] In some embodiments, to improve the stability of the acoustic device 300 during wear, the second portion 312 has a larger contact area with the user's ear. In some embodiments, the contact length between the second portion 312 and the first side of the ear can be proportional to the contact area between the second portion 312 and the first side of the ear. Specifically, the longer the contact length between the second portion 312 and the first side of the ear, the larger the contact area between the second portion 312 and the first side of the ear. Since the second portion has an arc-shaped contact surface with the user's ear, the larger the contact area between the second portion 312 and the first side of the ear, the greater the total frictional force of the second portion 312 on the first side of the ear.

[0107] In some embodiments, to increase the frictional force of the second portion 312 against the first side of the ear and improve the stability of the acoustic device 300, the length of the portion of the second portion 312 that contacts 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 that contacts the first side of the ear may exceed 75% of the total length of the second portion 312. In some embodiments, the length of the portion of the second portion 312 that contacts 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 portion of the second portion 312 that contacts the first side of the ear may exceed 85% of the total length of the second portion 312. In some embodiments, the length of the portion of the second portion 312 that contacts the first side of the ear may exceed 90% of the total length of the second portion 312. In some embodiments, the length of the portion of the second portion 312 that contacts the first side of the ear may exceed 95% of the total length of the second portion 312. In some embodiments, the length of the portion of the second portion 312 that contacts the first side of the ear may be the total length of the second portion 312.

[0108] In some embodiments, to improve the fit of the acoustic device to the ear when worn by different people, and to enable the acoustic device to adapt to the ear contours of any person, the acoustic device 300 may further include a plastic part (not shown in the figure). The plastic part may be a structure that can undergo plastic deformation when an external force is applied. In some embodiments, the external force that causes the plastic part to undergo plastic deformation may be a force not greater than 30 Newtons. In some embodiments, the external force that causes the plastic part to undergo plastic deformation may be a force not greater than 20 Newtons. In some embodiments, the external force that causes the plastic part to undergo plastic deformation may be a force not greater than 10 Newtons. In some embodiments, the external force that causes the plastic part to undergo plastic deformation may be a force not greater than 5 Newtons. In some embodiments, the external force that causes the plastic part to undergo plastic deformation may be a force not greater than 1 Newton. In some embodiments, the external force that causes the plastic part to undergo plastic deformation may be a force not greater than 0.5 Newtons.

[0109] In some embodiments, when a user wears the acoustic device 300, the molding portion may be located between the ear and other structures of the acoustic device 300. For example, the molding portion may be located between a first side of the ear and a hook-shaped portion. Alternatively, the molding portion may be located between a second side of the ear and a retaining portion. When the acoustic device is worn, the user applies external force, and the pressure between the ear and the acoustic device 300 can act directly on the molding portion, causing it to undergo plastic deformation, thereby deforming the molding portion into a shape consistent with the contour of the ear.

[0110] Plastic deformation is a type of deformation that cannot be restored to its original shape. When a plastic part is subjected to external force, it deforms and changes its shape. After the external force is removed, the amount of deformation in the plastic part cannot be recovered or can only be partially recovered. The portion of deformation that cannot be recovered and is retained is the amount of plastic deformation in the plastic part.

[0111] In some embodiments, the molding portion may be configured 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 molding portion and the ear. That is, the acoustic device is roughly but not completely fitted to the user's ear, achieving a basic wearing comfort and stability. When the user applies external force (e.g., applies pressure) to the acoustic device or the molding portion, the contact area between the molding portion and the ear is first compressed. The contact area between the molding portion and the ear can undergo plastic deformation according to the ear contour of the user actually wearing the acoustic device 300, until the non-contact area between the molding portion and the ear moves to fit the ear, thereby adjusting the shape of the molding portion to fit the arc curve of the ear contour, achieving a complete or near-complete fit with the target user's ear. In some embodiments, after applying external force, the area that changes from a non-contact area to a contact area can be greater than 50% of the area of ​​the non-contact area when no external force is applied. In some embodiments, after an external force is applied, the area that changes from a non-contact area to a contact area can be greater than 70% of the area of ​​the non-contact area when no external force is applied. In some embodiments, after an external force is applied, the area that changes from a non-contact area to a contact area can be greater than 90% of the area of ​​the non-contact area when no external force is applied. In some embodiments, after an external force is applied, the area that changes from a non-contact area to a contact area can be 100% of the area of ​​the non-contact area when no external force is applied. With this setting, the comfort and stability of the acoustic device 300 are greatly improved, which can effectively enhance the user experience.

[0112] In some embodiments, in order for the plastic portion to undergo plastic deformation, the external force applied to the plastic portion needs to be greater than the plastic deformation force of the plastic portion. The plastic deformation force is the critical force required for the plastic portion to undergo plastic deformation. When the force applied to the plastic portion is greater than or equal to this critical force, the plastic portion undergoes plastic deformation; when the force applied to the plastic portion is less than this critical force, the plastic portion undergoes elastic deformation or does not deform. In some embodiments, the range of the plastic deformation force of the plastic portion can be 0.1 Newton to 20 Newtons. In some embodiments, the range of the plastic deformation force of the plastic portion can be 1 Newton to 15 Newtons. In some embodiments, the range of the plastic deformation force of the plastic portion can be 1 Newton to 10 Newtons. In some embodiments, the range of the plastic deformation force of the plastic portion can be 1 Newton to 5 Newtons.

[0113] In some embodiments, the amount of deformation recovery after plastic deformation is related to the plastic material selected for the plastic part. The plastic modulus of the plastic material can affect the amount of deformation recovery after plastic deformation. Generally, the smaller the plastic modulus of the plastic material, the greater its plastic deformation capacity and the smaller the amount of deformation recovery. In some embodiments, the amount of deformation recovery after plastic deformation of the plastic part may be less than 20%. In some embodiments, the amount of deformation recovery after plastic deformation of the plastic part may be less than 15%. In some embodiments, the amount of deformation recovery after plastic deformation of the plastic part may be less than 10%. In some embodiments, the amount of deformation recovery after plastic deformation of the plastic part may be less than 5%. In some embodiments, the amount of deformation recovery after plastic deformation of the plastic part may be less than 1%.

[0114] In some embodiments, the material of the plastic part may include polymer materials, clay materials, etc. In some embodiments, the polymer material may include, but is not limited to, polyethylene, polypropylene, polystyrene, etc.

[0115] In some embodiments, the molding portion may be disposed on the hook-shaped portion 310 of the acoustic device 300. In some embodiments, the molding portion may be disposed on the first portion 311 and / or the second portion 312 of the hook-shaped portion 310. Preferably, in some embodiments, the molding portion may be disposed on the first portion 311 of the hook-shaped portion 310. When the acoustic device is worn, the first portion 311 of the hook-shaped portion experiences a greater compressive force than the second portion 312 and has a smaller contact area, resulting in less comfort to the ear compared to the second portion 312. When the molding portion is disposed on the first portion 311, after pressure is applied to the molding portion, the molding portion can undergo plastic deformation according to the shape of the ear of the user actually wearing the acoustic device 300, adjusting to a curved shape that fits the ear contour, so that a larger proportion of the non-contact area in the first portion 311 becomes a contact area, achieving a complete or near-complete fit with the target user's ear.

[0116] In some embodiments, a molding portion may be disposed between the retaining portion 320 and the first portion 311 in a direction perpendicular to the user's sagittal plane. In some embodiments, the molding portion may be disposed on the portion of the outer surface of the first portion 311 facing the retaining portion, so that the pressing force of the first portion 311 on the first side of the ear can act directly on the molding portion.

[0117] In some embodiments, the plastic part can have multiple material forms, and the plastic deformation force required for plastic deformation of the plastic part varies under different material forms. In some embodiments, the plastic deformation force of the plastic part can include a first plastic deformation force and a second plastic deformation force, which are the plastic deformation forces of the plastic part in different material forms, respectively. In some embodiments, the material form of the plastic part can include a easily deformable soft state and a difficult-to-deform hard state. In some embodiments, the plastic deformation force of the plastic part corresponding to the soft state can be the first deformation force, and the plastic deformation force of the plastic part corresponding to the hard state can be the second deformation force. In some embodiments, when the plastic part meets a preset condition, the plastic part can realize a material state transformation, thereby changing the plastic deformation force of the plastic material. In some embodiments, when the preset condition is met, the plastic part changes from a hard state to a 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 can be 0.3 Newtons to 10 Newtons. Preferably, in some embodiments, the range of the first plastic deformation force can be 1 Newton to 5 Newtons. More preferably, the range of the first plastic deformation force can be 3 Newtons to 5 Newtons. In some embodiments, the range of the second plastic deformation force can be 10 Newtons to 100 Newtons. In some embodiments, the range of the second plastic deformation force can be 15 Newtons to 80 Newtons. In some embodiments, the range of the second plastic deformation force can be 20 Newtons to 70 Newtons. In some embodiments, the range of the second plastic deformation force can be 30 Newtons to 60 Newtons. When the above preset conditions are not met, the plastic part changes from a soft state to a hard state, and the plastic deformation force of the plastic part changes from the first plastic deformation force to the second plastic deformation force.

[0118] In some embodiments, the preset conditions may include temperature conditions. In some embodiments, when the temperature is above a threshold, the plastic portion changes from a rigid state to a soft state. In some embodiments, the temperature threshold may be 45°C. In some embodiments, the temperature threshold may be 50°C. In some embodiments, the temperature threshold may be 55°C. In some embodiments, the material of the plastic portion may include thermoplastic polymers, 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 properties.

[0119] In some embodiments, the plastic portion of the acoustic device further includes a resistance wire. The resistance wire is wrapped in plastic material. The resistance wire can heat the plastic material by passing an electric current, raising the temperature of the plastic material above a threshold, thus completing the transition from a rigid to a soft state. After the heating of the resistance wire stops, the plastic material cools naturally. When the temperature falls below the threshold, the plastic portion transitions from a soft state to a rigid 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, preventing the resistance wire from being exposed due to excessive deformation during plastic deformation.

[0120] In some embodiments, the outer surface of the plastic portion of the acoustic device may be covered with a skin-friendly material. This material comes into contact with the user's skin when wearing the device, improving wearing comfort. In some embodiments, the skin-friendly material may be made of one or more materials. The skin-friendly material can be composed of materials with certain absorbency and flexibility, such as cotton, linen, wool, silk, silicone, or a tactile adhesive. In some embodiments, the skin-friendly material may also be other single or composite materials that achieve the same performance, thus enhancing wearing comfort.

[0121] In some embodiments, the acoustic device further includes a control unit for performing various control operations on the acoustic device. In some embodiments, the control unit can be operated via touch or mechanical buttons. 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, causing the plastic part to be in a heating state, thereby increasing the temperature. Preferably, the plastic part further includes a temperature detector for detecting the temperature of the plastic part. The control unit can acquire the temperature information from the temperature detector to automatically control the state of the control switch. When the temperature is higher than a threshold, the control unit can switch the control switch to the off state. At this 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 (e.g., a vibration signal or a light signal) to prompt the user that the heating of the plastic part is complete. At this time, the user can wear the acoustic device on their ear and complete the plastic deformation of the plastic part by squeezing and shaping it.

[0122] It should be noted that the control unit may also include other control functions of the acoustic device, such as internal voice and music playback and / or pause, etc., which are not limited in this specification.

[0123] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0124] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0125] Furthermore, those skilled in the art will understand that aspects of this application can be described and illustrated through several patentable types or situations, including any new and useful combination of processes, machines, products, or substances, or any new and useful improvements thereof. Accordingly, aspects of this application can be implemented entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. All of the above hardware or software may be referred to as a “data block,” “module,” “engine,” “unit,” “component,” or “system.” Furthermore, aspects of this application may manifest as a computer product located on one or more computer-readable media, the product including computer-readable program code.

[0126] Computer storage media may contain a propagated data signal containing computer program code, for example, on baseband or as part of a carrier wave. This propagated signal may take various forms, including electromagnetic, optical, and suitable combinations thereof. Computer storage media can be any computer-readable medium other than a computer-readable storage medium, which can be connected to an instruction execution system, apparatus, or device to enable communication, propagation, or transmission of a program for use. The program code located on the computer storage medium can be propagated through any suitable medium, including radio, cable, fiber optic cable, RF, or similar media, or any combination of the above media.

[0127] The computer program code required for the operation of each part of this application can be written in any one or more programming languages, including object-oriented programming languages ​​such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C++, C#, VB.NET, Python, etc., conventional procedural programming languages ​​such as C, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, dynamic programming languages ​​such as Python, Ruby, and Groovy, or other programming languages. This program code can run entirely on the user's computer, or as a standalone software package on the user's computer, or partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the latter case, the remote computer can be connected to the user's computer through any network, such as a local area network (LAN) or wide area network (WAN), or connected to an external computer (e.g., via the Internet), or in a cloud computing environment, or used as a service such as Software as a Service (SaaS).

[0128] Furthermore, unless expressly stated in the claims, the order of processing elements and sequences, the use of numbers and letters, or other names described in this application are not intended to limit the order of the processes and methods of this application. Although the foregoing disclosure has discussed some currently considered useful embodiments of the invention through various examples, it should be understood that such details are for illustrative purposes only, and the appended claims are not limited to the disclosed embodiments; rather, the claims are intended to cover all modifications and equivalent combinations that conform to the substance and scope of the embodiments of this application. For example, while the system components described above can be implemented using hardware devices, they can also be implemented solely through software solutions, such as installing the described system on existing servers or mobile devices.

[0129] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the invention, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0130] In some embodiments, numbers describing the quantity of components and attributes are used. It should be understood that such numbers used in the description of embodiments are modified in some examples with the terms "approximately," "approximately," or "generally." Unless otherwise stated, "approximately," "approximately," or "generally" indicates that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may be changed depending on the characteristics required by individual embodiments. In some embodiments, numerical parameters should take into account specified significant digits and employ a general method of digit reservation. Although the numerical ranges and parameters used to confirm their breadth of scope in some embodiments of this application are approximate values, in specific embodiments, such values ​​are set as precisely as feasible.

[0131] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent are incorporated herein by reference. This excludes historical application documents that are inconsistent with or conflict with the content of this application, as well as documents that limit the broadest scope of the claims in this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0132] Finally, it should be understood that the embodiments described in this application are merely illustrative of the principles of the embodiments of this application. Other modifications may also fall within the scope of this application. Therefore, alternative configurations of the embodiments of this application are considered as examples and not limitations, and are regarded as consistent with the teachings of this application. Accordingly, the embodiments of this application are not limited to the embodiments explicitly described and illustrated in this application.

Claims

1. An acoustic device, comprising: A hook-shaped portion, a connecting portion, and a retaining portion, and a movement assembly disposed in the retaining portion; When the user wears the acoustic device, the hook-shaped part is hung between the first side of the user's ear and the head, the retaining part contacts the second side of the ear, and the connecting part connects the hook-shaped part and the retaining part. The second side is the front side of the ear, and the first side is the back side of the ear. In the wearing state, the retaining part presses against the area where at least one of the cymba conchae, triangular fossa, and antihelix is ​​located, and is configured not to block the external auditory canal. The hook-shaped portion includes a first part and a second part, wherein the first part is connected to the connecting part, and the second part is connected to the first part; The projection of the first part onto the user's sagittal plane has a first curve; the projection of the second part onto the user's sagittal plane 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 user's transverse direction; the connection point of the first curve and the second curve is the intersection point of the bottom edge of the retaining part away from the connecting part along the transverse direction perpendicular to the user and the projection of the hook-shaped part onto the user's sagittal plane.

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

3. The acoustic device according to claim 1, wherein, When the user wears the acoustic device, the pressure of the first part on the first side of the ear is greater than the pressure of the second part on the first side of the ear, and the friction of the second part on the first side of the ear is greater than the friction of the first part on the first side of the ear.

4. The acoustic device according to claim 1, wherein, The first pressing force on the first side of the ear, corresponding to the first extreme point on the hook-shaped part, in a direction perpendicular to the user's sagittal plane is 0.05 Newtons to 3 Newtons.

5. The acoustic device according to claim 1, wherein, The position of the hook-shaped part corresponding to the connection point between the first curve and the second curve applies a second clamping force of 0.05 Newtons to 3 Newtons to the first side of the ear in a direction perpendicular to the user's coronal plane.

6. The acoustic device according to claim 1, wherein, In the user's projection on the sagittal plane, the distance between the first side of the holding part near the first extreme point and the first extreme point is 5 mm to 15 mm.

7. The acoustic device according to claim 1, wherein, The contact area where the hook-shaped part contacts the user's ear includes 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 7, wherein, The first portion has one or more contact areas that contact the first side of the ear, and one or more non-contact areas that do not contact the first side of the ear.

9. The acoustic device according to claim 8, wherein, The distance between the non-contact area and the first side of the ear is no more than 5 millimeters.

10. The acoustic device according to claim 7, wherein, The second part of the contact area that contacts the first side of the ear also includes a fourth contact point, which is located between the connection point between the first curve and the second curve and the second extreme point.

11. The acoustic device according to claim 1, wherein, The dimensions of the connecting part along the cross-sectional direction perpendicular to the user range from 0.56 mm to 4.56 mm.

12. The acoustic device according to claim 1, wherein, The dimension of the connecting portion along the sagittal plane perpendicular to the user ranges from 2.5 mm to 4.5 mm.

13. The acoustic device according to claim 1, wherein, The acoustic device also includes a plastic part that can undergo plastic deformation to fit the user's ear.

14. The acoustic device according to claim 13, wherein, The plastic part is disposed on the first portion of the hook-shaped part.

15. The acoustic device according to claim 14, wherein, In a direction perpendicular to the user's sagittal plane, the plastic portion is located between the retaining portion and the first portion.

16. The acoustic device according to claim 13, wherein, The plastic part has a plastic deformation force. When the force on the plastic part exceeds the plastic deformation force, the plastic part undergoes plastic deformation, and the deformation recovery amount of the plastic deformation is less than 20%.

17. The acoustic device according to claim 16, wherein, The plastic deformation force includes a first plastic deformation force, which ranges from 0.3 Newtons to 10 Newtons.

18. The acoustic device according to claim 17, wherein, The plastic deformation force includes a second plastic deformation force, which ranges from 10 Newtons to 100 Newtons.

19. The acoustic device according to claim 18, wherein, When the plastic part meets the preset conditions, the plastic deformation force is transformed from the second plastic deformation force into the first plastic deformation force.

20. The acoustic device according to claim 13, wherein, The material of the plastic part includes thermoplastic polymers.

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