An earphone

Abstract

The application provides a clip-on earphone. The clip-on earphone comprises a sound generating part, a battery part, a connecting part and a magneto-rheological elastomer module. The connecting part connects the sound generating part and the battery part. In a wearing state, the battery part cooperates with the sound generating part through the connecting part to form a clamping on an auricle. The magneto-rheological elastomer module is arranged in the connecting part. The magneto-rheological elastomer module is configured to adjust the clamping force of the sound generating part and the battery part on the auricle in the wearing state. The clip-on earphone provided by the application can realize flexible adjustment of the clamping force of the clip-on earphone by arranging the magneto-rheological elastomer module in the connecting part, and improve the adaptability of the clamping force of the clip-on earphone to the fixing requirements in different sports scenarios.

Description

Technical Field

[0001] This application relates to the field of headphone technology, and more particularly to a clip-on headphone. Background Technology

[0002] In related technologies, clip-on headphones typically use springs or fixed elastic structures to provide clamping force between the sound-producing part and the battery part and the auricle, which can easily lead to insufficient clamping force or poor clamping comfort. Utility Model Content

[0003] In view of this, the present application aims to provide an ear-clamping headphone to improve the situation where the clamping force of the ear-clamping headphone is insufficient or the clamping comfort is poor.

[0004] To achieve the above objectives, one aspect of this application provides a clip-on earphone, comprising:

[0005] Vocal part;

[0006] Battery section;

[0007] A connecting part connects the sound-generating part and the battery part. In the wearing state, the battery part cooperates with the sound-generating part through the connecting part to clamp the auricle.

[0008] A magnetorheological elastomer module is disposed within the connecting portion, and the magnetorheological elastomer module is configured to adjust the clamping force of the sound-emitting portion and the battery portion on the auricle in the wearing state.

[0009] In some embodiments, the magnetorheological elastomer module includes a magnetorheological elastomer matrix and a coil. The coil is sleeved on the outside of the magnetorheological elastomer matrix and is connected to a control board inside the battery section. The control board is configured to control the energizing parameters of the coil and adjust the electromagnetic field strength within the coil to adjust the elastic modulus of the magnetorheological elastomer matrix.

[0010] In some embodiments, the elastic modulus of the magnetorheological elastomer matrix is ​​adjustable in the range of 1.5 MPa to 12 MPa.

[0011] In some embodiments, the adjustable range of the electromagnetic field strength within the coil is between 0mT and 800mT.

[0012] In some embodiments, the clip-on earphone includes a piezoelectric sensor, and the part of the sound-emitting part and / or the battery part that contacts the auricle in the wearing state is a clamping part. The piezoelectric sensor is used to obtain the contact pressure of the clamping part on the auricle, and the control board controls the energizing parameters of the coil according to the contact pressure.

[0013] In some embodiments, the clip-on earphone includes a detection unit communicatively connected to the control board, which is configured to control the energizing parameters of the coil based on the state of the clip-on earphone.

[0014] In some embodiments, the clip-on headphones have a stationary state, a first moving state, and a second moving state;

[0015] In a static state, the clamping force of the sound-generating part and the battery part on the auricle is between 1.485N and 1.5225N; in a first moving state, the clamping force of the sound-generating part and the battery part on the auricle is between 2.744N and 2.856N; in a second moving state, the clamping force of the sound-generating part and the battery part on the auricle is between 3.88N and 4.12N.

[0016] In some embodiments, the detection unit is an accelerometer used to acquire the acceleration of the clip-on headphones, and the control board is configured to acquire the state of the clip-on headphones based on the acceleration and a set value.

[0017] In some embodiments, the magnetorheological elastomer matrix is ​​integrally vulcanized with silicone rubber and carbonyl iron powder.

[0018] In some embodiments, the detection unit is a gyroscope.

[0019] The ear-clamping headphones described in this application embodiment, by incorporating a magnetorheological elastomer module within the connecting portion, allow the ear-clamping headphones to control the elastic modulus of the magnetorheological elastomer module by controlling the magnetic field outside the module, thereby controlling the connecting portion's resistance to deformation. This enables the adjustment of the force required to separate the connecting portion from the sound-generating portion—that is, the clamping force formed by the sound-generating portion and the battery portion on the ear—while the headphones are worn. This allows for flexible adjustment of the clamping force, improving the adaptability of the ear-clamping force to meet the fixation requirements in different sports scenarios. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a clip-on earphone provided in an embodiment of this application;

[0021] Figure 2 for Figure 1 A structural diagram from another perspective;

[0022] Figure 3 for Figure 2 A cross-sectional view at point AA;

[0023] Figure 4 This is an exploded view of an ear-clip headphones according to one embodiment of this application;

[0024] Figure 5 This is a schematic diagram illustrating the connection between the magnetorheological elastomer module and the connecting part in one embodiment of this application.

[0025] Explanation of reference numerals in the attached figures

[0026] 10. Clip-on earphone; 11. Sound-generating part; 11a. Clamping part; 12. Battery part; 121. Battery; 122. Control board; 13. Connecting part; 131. Housing; 132. Connector; 14. Magnetorheological elastomer module; 141. Magnetorheological elastomer matrix; 142. Coil; 15. Piezoelectric sensor; 16. Detection unit. Detailed Implementation

[0027] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0028] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In related technologies, clip-on headphones typically use springs or fixed elastic structures to provide clamping force between the sound-producing part and the battery part and the auricle, which can easily lead to insufficient clamping force or poor clamping comfort. The clamping force when static is usually insufficient to maintain the headphone's position during movement, causing the headphones to easily fall out. Furthermore, with a fixed clamping force, prolonged wear may compress the ear and prevent adaptive adjustment.

[0031] Based on the above, the first aspect of this application provides an ear-clip earphone 10. Please refer to [link to relevant documentation]. Figures 1 to 5The clip-on earphone 10 includes a sound-generating part 11, a battery part 12, a connecting part 13, and a magnetorheological elastomer module 14. The connecting part 13 connects the sound-generating part 11 and the battery part 12. In the wearing state, the battery part 12 cooperates with the sound-generating part 11 through the connecting part 13 to clamp the auricle. The magnetorheological elastomer module 14 is disposed within the connecting part 13. The magnetorheological elastomer module 14 is configured to adjust the clamping force of the sound-generating part 11 and the battery part 12 on the auricle in the wearing state.

[0032] It should be noted that the sound-generating part 11 is used to cooperate with the concha cavity of the outer ear. The sound-generating device located in the sound-generating part 11 converts electrical signals into sound waves and emits them toward the concha cavity.

[0033] The battery unit 12 is used for communication, control, and power supply. For example, the battery unit 12 includes a battery 121 for powering the entire earbud 10. Exemplarily, the battery unit 12 also includes an antenna disposed within the battery unit 12 for communication with other devices.

[0034] For example, the connecting part 13 is C-shaped, and its two ends are respectively connected to the sound-generating part 11 and the battery part 12.

[0035] When worn, the battery unit 12 engages with the sound-emitting unit 11 via the connecting part 13 to clamp the auricle. That is, the connecting part 13 and the sound-emitting unit 11 contact the inner and outer sides of the auricle respectively, thereby clamping the earphone 10 onto the auricle. Here, the thickness of the auricle can, in turn, create a certain distance between the connecting part 13 and the sound-emitting unit 11, overcoming the elastic force of the connecting part 13 and driving it to undergo a certain degree of elastic deformation.

[0036] When not worn, the connecting part 13 is in a natural state, and the distance between the connecting part 13 and the sound-emitting part 11 is smaller than the distance between the connecting part 13 and the sound-emitting part 11 when worn. When not worn, there may be a certain gap or contact between the connecting part 13 and the sound-emitting part 11, which is not restricted here.

[0037] The magnetorheological elastomer module 14, at least part of which is a magnetorheological material, can control the elastic modulus of the magnetorheological elastomer module 14 by controlling the magnetic field outside the magnetorheological elastomer module 14, thereby controlling the ability of the connecting part 13 to resist deformation. In this way, when worn, the force required for the auricle to separate the connecting part 13 from the sound-generating part 11 can be adjusted by adjusting the elastic modulus of the magnetorheological elastomer module 14, that is, the clamping force formed by the sound-generating part 11 and the battery part 12 on the auricle.

[0038] It should be noted that magnetorheological elastomers (MREs) are an emerging type of smart material with excellent mechanical properties and a rapid and reversible magnetostrictive effect.

[0039] Here, the general definition of elastic modulus is: stress divided by strain in a uniaxial stress state. Elastic modulus is an important performance parameter for engineering materials. From a macroscopic perspective, elastic modulus is a measure of an object's resistance to elastic deformation. Elastic modulus can be considered an indicator of how easily a material undergoes elastic deformation; the higher the value, the greater the stress required to induce a certain elastic deformation, meaning the material is more stiff, and thus, under a given stress, the smaller the elastic deformation. Elastic modulus refers to the stress required for a material to produce a unit elastic deformation under external force. It is an indicator reflecting a material's resistance to elastic deformation, equivalent to the stiffness of a common spring.

[0040] Here, the adjustment of the magnetorheological elastomer module 14 can be manual, such as through remote adjustment via a mobile application, or it can be automatic, such as through automatic detection of motion state adjustment. No restrictions are imposed here.

[0041] It should be noted that the magnetorheological elastomer module 14 can be entirely disposed within the connecting portion 13, or it can be partially disposed within the connecting portion 13 and partially extend out of the connecting portion 13.

[0042] Along the extending direction of the connecting portion 13, the size of the magnetorheological elastomer module 14 can be smaller than, equal to, or larger than the size of the connecting portion 13.

[0043] For example, the connecting part 13 includes a housing 131, which is fitted over the magnetorheological elastomer module 14. The housing 131 can be made of a soft material, such as silicone. Thus, when the auricle pushes the connecting part 13 apart from the sound-emitting part 11 and drives the connecting part 13 to undergo elastic deformation, the housing 131 can adapt to the deformation.

[0044] For example, the connecting portion 13 includes a housing 131 and two connectors 132. Along the extending direction of the connecting portion 13, the middle portion of the housing 131 is fitted over the magnetorheological elastomer module 14. Both ends of the housing 131 are connected to the two connectors 132. Both ends of the magnetorheological elastomer module 14 extend into the connectors 132. The connectors 132 extend away from the magnetorheological elastomer module 14 and protrude from the housing 131. The portion of the connector 132 extending out of the housing 131 extends into the battery portion 12 or the sound-generating portion 11 and forms a fixed connection with it. The connection between the housing 131 and the connectors 132 can be that the housing 131 is fitted over the connectors 132. The outer shell 131 can be made of soft material, and the connector 132 can be made of hard plastic. In this way, the connecting part 13 and the sound-emitting part 11 can respectively transmit force to both ends of the magnetorheological elastomer module 14 through the connector 132. When the elastic modulus of the magnetorheological elastomer module 14 changes, the degree to which the magnetorheological elastomer module 14 resists elastic deformation changes, and the force required for the auricle to open the connecting part 13 and the sound-emitting part 11 will also change accordingly, specifically manifested as a change in the clamping force.

[0045] The ear-clamping earphone 10 disclosed in this application embodiment, by providing a magnetorheological elastomer module 14 inside the connecting part 13, allows the ear-clamping earphone 10 to control the elastic modulus of the magnetorheological elastomer module 14 by controlling the magnetic field outside the magnetorheological elastomer module 14, thereby controlling the ability of the connecting part 13 to resist deformation. In this way, when worn, the force required for the auricle to separate the connecting part 13 from the sound-emitting part 11, i.e., the clamping force formed by the sound-emitting part 11 and the battery part 12 on the auricle, can be adjusted to achieve flexible adjustment of the clamping force of the ear-clamping earphone 10, thereby improving the adaptability of the clamping force of the ear-clamping earphone 10 to fix the needs of different sports scenarios.

[0046] For example, by controlling the continuous change of the magnetic field outside the magnetorheological elastomer module 14, stepless adjustment of the clamping force of the connecting part 13 can be achieved. By controlling the step change of the magnetic field outside the magnetorheological elastomer module 14, stepped adjustment of the clamping force of the connecting part 13 can be achieved.

[0047] In some embodiments, please refer to Figures 1 to 5 The magnetorheological elastomer module 14 includes a magnetorheological elastomer substrate 141 and a coil 142. The coil 142 is sleeved on the outside of the magnetorheological elastomer substrate 141. The coil 142 is connected to a control board 122 inside the battery section 12. The control board 122 is configured to control the energizing parameters of the coil 142 and adjust the electromagnetic field strength within the coil 142 to adjust the elastic modulus of the magnetorheological elastomer substrate 141.

[0048] For example, the magnetorheological elastomer matrix 141 may be composed of a matrix material and magnetic particles.

[0049] Coil 142 is a component for adjusting the electromagnetic field strength. Based on the magnetic effect of current (Oersted effect), that is, when current passes through a wire, a magnetic field is generated around the wire. By adjusting the current in coil 142, the electromagnetic field strength near coil 142 is adjusted. The magnetic particles in the magnetorheological elastomer matrix 141 are affected by the change in magnetic field. The magnetic particles rearrange in the matrix material, which leads to a significant change in the viscoelastic properties of the matrix material, thereby affecting the mechanical properties of the magnetorheological elastomer matrix 141, such as the elastic modulus.

[0050] The coil 142 is connected to the control board 122 inside the battery section 12. That is, the battery section 12 includes the control board 122 disposed therein, and the coil 142 is electrically connected to the control board 122.

[0051] The coil 142 is sleeved on the outside of the magnetorheological elastomer matrix 141. Since the magnetic field strength inside the coil 142 is greater, the current change of the coil 142 can more easily drive and affect the magnetic field at the magnetorheological elastomer matrix 141, which is beneficial for the control plate 122 to quickly control the elastic modulus of the magnetorheological elastomer matrix 141.

[0052] The control board 122 is configured to control the energizing parameters of the coil 142, meaning that the control board 122 can control the current flowing into the coil 142.

[0053] Specifically, the control board 122 includes a control circuit and a drive circuit. The drive circuit is electrically connected to the coil 142. The controller sends a control signal to the drive circuit through the control circuit, thereby changing the output of the drive circuit to the coil 142, and thus controlling the current flowing into the coil 142. For example, the control circuit is an integrated MCU (Microcontroller Unit).

[0054] In some embodiments, the elastic modulus of the magnetorheological elastomer matrix 141 is adjustable in the range of 1.5 MPa to 12 MPa.

[0055] For example, the elastic modulus of the magnetorheological elastomer matrix 141 can be 1.5 MPa, 1.8 MPa, 2 MPa, 2.5 MPa, 3 MPa, 3.5 MPa, 4 MPa, 4.5 MPa, 5 MPa, 5.5 MPa, 6 MPa, 6.5 MPa, 7 MPa, 7.5 MPa, 8 MPa, 8.5 MPa, 9 MPa, 9.5 MPa, 10 MPa, 10.5 MPa, 11 MPa, 11.5 MPa, or 12 MPa, etc., without limitation.

[0056] Here, MPa refers to megapascals, which is the unit of elastic modulus.

[0057] It is understandable that the greater the elastic modulus, the greater the hardness of the magnetorheological elastomer matrix 141.

[0058] By setting the adjustable range of the elastic modulus of the magnetorheological elastomer matrix 141 between 1.5MPa and 12MPa, the force required for the magnetorheological elastomer matrix 141 to resist the same deformation is within a reasonable range, and the clamping force of the ear-clamping headphones 10 can be adjusted within a reasonable range, which is beneficial for the ear-clamping headphones 10 to be suitable for different sports states.

[0059] In some embodiments, the adjustable range of the electromagnetic field strength within coil 142 is between 0 mT and 800 mT.

[0060] For example, the electromagnetic field strength within coil 142 can be 0 mT, 10 mT, 50 mT, 100 mT, 150 mT, 200 mT, 250 mT, 300 mT, 350 mT, 400 mT, 450 mT, 500 mT, 550 mT, 600 mT, 650 mT, 700 mT, 750 mT, or 800 mT, etc.

[0061] Here, mT refers to millitalas, which is the unit of electromagnetic field strength.

[0062] It is understandable that the greater the current in coil 142, the greater the electromagnetic field strength.

[0063] It should be noted that the adjustable range of the electromagnetic field strength here corresponds to the adjustable range of the elastic modulus of the magnetorheological elastomer matrix 141.

[0064] In other words, when the electromagnetic field strength within coil 142 is 0 mT, the elastic modulus of the magnetorheological elastomer matrix 141 can be 1.5 MPa; when the electromagnetic field strength within coil 142 is 800 mT, the elastic modulus of the magnetorheological elastomer matrix 141 can be 12 MPa. By adjusting the current in coil 142 from small to large, the electromagnetic field strength within the coil is adjusted from 0 mT to 800 mT, and correspondingly, the elastic modulus of the magnetorheological elastomer matrix 141 is adjusted from 1.5 MPa to 12 MPa.

[0065] This facilitates the regulation of the electromagnetic field strength within the coil 142 by adjusting the current within the coil 142.

[0066] In some embodiments, please refer to Figures 1 to 4 The clip-on earphone 10 includes a piezoelectric sensor 15. The portion of the sound-emitting part 11 and / or the battery part 12 that contacts the auricle when worn is called the clamping part 11a. The piezoelectric sensor 15 is used to obtain the contact pressure of the clamping part 11a against the auricle. The control board 122 controls the energizing parameters of the coil 142 based on the contact pressure.

[0067] The part of the sound-emitting part 11 and / or the battery part 12 that contacts the auricle when worn is the clamping part 11a. That is, the clamping part 11a may be on the sound-emitting part 11 only, on the battery part 12 only, or on both the sound-emitting part 11 and the battery part 12.

[0068] The piezoelectric sensor 15 is used to obtain the contact pressure of the clamping part 11a on the auricle. That is, the piezoelectric sensor 15 is disposed on the clamping part 11a to obtain the contact pressure of the clamping part 11a on the auricle. The contact pressure obtained by the piezoelectric sensor 15 is the clamping force of the earphone 10 on the auricle.

[0069] The control board 122 controls the energizing parameters of the coil 142 based on the contact pressure. This means that the piezoelectric sensor 15 can feed back the contact pressure to the control board 122. The control board 122 can determine whether the clamping force has reached the target value based on the feedback clamping force. If the target value has not been reached, the control board 122 continues to control the change of the energizing parameters of the coil 142. If the clamping force has reached the target value, the control board 122 controls the energizing parameters of the coil 142 to stop changing and maintain the current state, so that the clamping force is kept at the target value.

[0070] In this embodiment, the clamping force is controlled in a closed loop by the piezoelectric sensor 15, which can improve the precision and accuracy of adjusting the clamping force.

[0071] For example, the clamping part 11a is made of soft rubber, which is beneficial for transmitting contact pressure to the piezoelectric sensor 15 disposed in the clamping part 11a.

[0072] In some embodiments, please refer to Figures 1 to 4 The clip-on earphone 10 includes a detection unit 16. The detection unit 16 is communicatively connected to a control board 122. The control board 122 is configured to control the energizing parameters of the coil 142 according to the state of the clip-on earphone 10.

[0073] The detection unit 16 can be located in the sound-emitting part 11, the battery part 12, or the connecting part 13, and there is no limitation.

[0074] The detection unit 16 is connected to the control board 122 via either wired or wireless communication.

[0075] The detection unit 16 is used to detect the motion state of the ear-clip headphones 10, i.e. the user's motion state. Based on this, the control board 122 is configured to control the energizing parameters of the coil 142 according to the state of the ear-clip headphones 10 detected by the detection unit 16. In this way, the ear-clip headphones 10 can automatically adjust the clamping force according to the user's motion state, realize the adaptive clamping of the ear-clip headphones 10, improve the wearing comfort of the ear-clip headphones 10, and also improve the intelligence of the ear-clip headphones 10.

[0076] In some embodiments, the clip-on earphone 10 has a static state, a first moving state, and a second moving state. In the static state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is between 1.485 N and 1.5225 N. In the first moving state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is between 2.744 N and 2.856 N. In the second moving state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is between 3.88 N and 4.12 N.

[0077] For example, the first motion state can be a running state, and the second motion state can be a jumping state.

[0078] For example, in a static state, the target value of the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is 1.5N, and the relative deviation between the measured clamping force value and the target value is allowed to be within 1.5%; in a first moving state, the target value of the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is 2.8N, and the relative deviation between the measured clamping force value and the target value is allowed to be within 2%; in a second moving state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is 4N, and the relative deviation between the measured clamping force value and the target value is allowed to be within 3%.

[0079] For example, in a static state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is 1.485N, 1.49N, 1.5N, 1.51N, 1.52N, or 1.5225N, etc. In a first moving state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is 2.744N, 2.75N, 2.8N, 2.85N, 2.855N, or 2.856N, etc. In a second moving state, the clamping force of the sound-generating part 11 and the battery part 12 on the auricle is 3.88N, 3.9N, 3.95N, 4N, 4.05N, 4.1N, or 4.12N, etc.

[0080] In this embodiment, by controlling the clamping force within a suitable range under different motion states, the clamping stability of the earphone 10 under different motion states can be improved, and the discomfort of the auricle caused by excessive clamping force can also be improved.

[0081] In some embodiments, the detection unit 16 is an accelerometer. The accelerometer is used to acquire the acceleration of the clip-on headphones 10. The control board 122 is configured to acquire the state of the clip-on headphones 10 based on the acceleration and a set value.

[0082] For example, the first motion state can be a running state, and the second motion state can be a jumping state.

[0083] For example, the values ​​are set to 2g and 4g. If the accelerometer detects that the absolute value of the acceleration of the earbuds 10 is less than 2g and greater than or equal to 0g, then the earbuds 10 are determined to be stationary. Here, g represents the acceleration due to gravity, approximately 9.8 m / s². 2 If the accelerometer detects that the absolute value of the acceleration of the earbuds 10 is greater than or equal to 2g and less than or equal to 4g, then the earbuds 10 are determined to be in the first motion state. If the accelerometer detects that the absolute value of the acceleration of the earbuds 10 is greater than or equal to 4g, then the earbuds 10 are determined to be in the second motion state.

[0084] It is understandable that the setting value is not limited to 2g and 4g. For example, it can be at least one of 1.5g, 1.8g, 2g, 2.2g, 2.5g, 2.8g, 3g, 3.2g, 3.5g, 3.8g, 4g, 4.2g, 4.5g, 5g, etc.

[0085] By setting a set value and comparing the acceleration detected by the accelerometer with the set value, the state of the clip-on headphones 10 can be obtained, which can improve the reliability of motion state detection and is also beneficial for control.

[0086] For example, the acceleration sensor is a triaxial accelerometer.

[0087] In some embodiments, the magnetorheological elastomer matrix 141 is integrally vulcanized with silicone rubber and carbonyl iron powder.

[0088] It should be noted that the magnetorheological elastomer matrix 141 is composed of a matrix material and magnetic particles. The matrix material can be silicone rubber with an elastic modulus of 3 MPa, and the magnetic particles can be carbonyl iron powder with a diameter between 3 and 8 micrometers and a volume concentration of approximately 27%.

[0089] The curing process of the magnetorheological elastomer matrix 141 is high-temperature and high-pressure vulcanization, with conditions of 150℃, 10MPa, and magnetic field strength of 300mT.

[0090] In this embodiment, by integrally vulcanizing silicone rubber and carbonyl iron powder, the magnetorheological elastomer matrix 141, after being formed, can have a certain resistance to deformation in its natural state. At the same time, the elastic modulus of the magnetorheological elastomer matrix 141 can reach an adjustable range of 1.5MPa to 12MPa under a magnetic field strength of 0mT to 800mT.

[0091] In some embodiments, the detection unit 16 is a gyroscope.

[0092] A gyroscope is a device that uses the angular momentum of a high-speed rotating body to sense the angular velocity of its housing relative to inertial space around one or two axes orthogonal to its rotation axis.

[0093] Here, the gyroscope can detect the acceleration of the clip-on earphone 10, thereby determining the motion state of the clip-on earphone 10 and providing a signal for the control board 122 to adjust the clamping force.

[0094] A second aspect of this application provides an earphone assembly, including an earphone case and an ear-clip earphone 10 provided in any embodiment of this application.

[0095] The clip-on earphones 10 can be stored in the earphone case, which can be used to charge the clip-on earphones 10.

[0096] The earphone assembly provided in this application, based on the advantages of the aforementioned clip-on earphone 10, has the characteristic of being able to flexibly adjust the clamping force of the clip-on earphone 10.

[0097] A third aspect of this application provides a control method applied to the clip-on earphone 10 provided in this application embodiment. The control method includes:

[0098] The detection unit detects the movement status of the clip-on headphones;

[0099] Based on the movement state, the control board controls the current of the coil so that the clamping force of the ear clip headphones reaches the preset value.

[0100] The control method provided in this application detects the motion state of the ear-clip headphones 10, controls the current of the coil 142, adjusts the electromagnetic field strength in the coil 142, adjusts the elastic modulus of the magnetorheological elastomer matrix 141, and adjusts the force required for the ear to open the connecting part 13 and the sound-emitting part 11. That is, the clamping force formed by the sound-emitting part 11 and the battery part 12 on the ear reaches a preset value, so that the ear-clip headphones 10 can automatically adjust the clamping force according to the motion state, and the user does not need to manually adjust it, thus improving the intelligence level of the ear-clip headphones 10.

[0101] In some embodiments, the control board controls the current of the coil according to the motion state, so that the clamping force of the ear-clip headphones reaches a preset value, including:

[0102] If the clip-on headphones are stationary, the control board controls the current of the coil so that the clamping force of the clip-on headphones reaches the first preset value.

[0103] If the ear-clip headphones are in the first motion state, the control board controls the current of the coil so that the clamping force of the ear-clip headphones reaches the second preset value.

[0104] If the ear-clip headphones are in the second motion state, the control board controls the current of the coil so that the clamping force of the ear-clip headphones reaches the third preset value.

[0105] In some embodiments, the control board controls the current of the coil according to the motion state, so that the clamping force of the ear-clip headphones reaches a preset value, and further includes:

[0106] The clamping force data measured in real time by the piezoelectric sensor is fed back to the control board. The control board uses closed-loop control to ensure that the clamping force of the earphone reaches the target value of the clamping force in the current state.

[0107] For example, the data measured in real time by the piezoelectric sensor is fed back to the control board, and the control board uses closed-loop control to ensure that the clamping force of the earbuds reaches the target value of the clamping force in the current state, including:

[0108] If the clamping force measured by the piezoelectric sensor in real time is less than the preset value, the current of the control coil on the control board will increase.

[0109] If the clamping force measured by the piezoelectric sensor in real time is greater than the preset value, the current of the control board control coil will decrease.

[0110] If the clamping force measured in real time by the piezoelectric sensor is equal to the preset value, the current of the control coil on the control board will stop changing, so that the clamping force of the ear-clamping headphones is maintained at the preset value.

[0111] It should be noted that users can set or adjust the first, second, third, and so on preset values ​​through the mobile application.

[0112] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0113] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An ear-clip type earphone, characterized in that, include: Vocal part; Battery section; A connecting part connects the sound-generating part and the battery part. In the wearing state, the battery part cooperates with the sound-generating part through the connecting part to clamp the auricle. A magnetorheological elastomer module is disposed within the connecting portion, and the magnetorheological elastomer module is configured to adjust the clamping force of the sound-emitting portion and the battery portion on the auricle in the wearing state.

2. The clip-on earphone according to claim 1, characterized in that, The magnetorheological elastomer module includes a magnetorheological elastomer matrix and a coil. The coil is sleeved on the outside of the magnetorheological elastomer matrix and is connected to a control board inside the battery section. The control board is configured to control the energizing parameters of the coil and adjust the electromagnetic field strength inside the coil to adjust the elastic modulus of the magnetorheological elastomer matrix.

3. The clip-on earphone according to claim 2, characterized in that, The adjustable range of the elastic modulus of the magnetorheological elastomer matrix is ​​between 1.5 MPa and 12 MPa.

4. The clip-on earphone according to claim 2, characterized in that, The adjustable range of the electromagnetic field strength within the coil is between 0mT and 800mT.

5. The clip-on earphone according to claim 2, characterized in that, The ear-clip earphone includes a piezoelectric sensor. The part of the sound-emitting part and / or the battery part that contacts the auricle in the wearing state is a clamping part. The piezoelectric sensor is used to obtain the contact pressure of the clamping part on the auricle. The control board controls the energizing parameters of the coil according to the contact pressure.

6. The clip-on earphone according to claim 2, characterized in that, The clip-on earphone includes a detection unit that is communicatively connected to the control board, which is configured to control the energizing parameters of the coil according to the state of the clip-on earphone.

7. The clip-on earphone according to claim 6, characterized in that, The clip-on headphones have a static state, a first motion state, and a second motion state; In a static state, the clamping force of the sound-generating part and the battery part on the auricle is between 1.485N and 1.5225N; in a first moving state, the clamping force of the sound-generating part and the battery part on the auricle is between 2.744N and 2.856N; in a second moving state, the clamping force of the sound-generating part and the battery part on the auricle is between 3.88N and 4.12N.

8. The clip-on earphone according to claim 7, characterized in that, The detection unit is an accelerometer, which is used to acquire the acceleration of the ear-clip headphones. The control board is configured to acquire the state of the ear-clip headphones based on the acceleration and a set value.

9. The clip-on earphone according to claim 2, characterized in that, The magnetorheological elastomer matrix is ​​integrally vulcanized with silicone rubber and carbonyl iron powder.

10. The clip-on earphone according to claim 6, characterized in that, The detection unit is a gyroscope.

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