Elastic member and earphone

Abstract

The application provides an elastic member and an earphone. The elastic member comprises at least two shape memory members, and the at least two shape memory members are twisted and / or woven to form the elastic member. When the elastic member is applied to the earphone, the earphone can be better applied to people with thinner ears or smaller auricles and people with thicker ears or larger auricles, and the comfort and firmness of wearing can be better considered.

Description

Technical Field

[0001] This application relates to the field of electronics, specifically to an elastic element and headphones. Background Technology

[0002] Open-ear stereo (OWS) headphones offer significantly improved comfort compared to true wireless stereo (TWS) headphones because they don't penetrate deep into the ear canal. Therefore, they are popular among users who experience discomfort with TWS headphones. Currently, OWS headphones are mainly available in two styles: clip-on and ear-hook. Clip-on headphones clip the acoustic components and battery onto the ear via a connection point; ear-hook headphones hang on the ear via an ear hook.

[0003] When OWS headphones are worn, if the clamping force from the connector is too strong, it can cause ear pain; if the clamping force is too weak, the headphones may easily fall off. However, human ears vary in shape, and the clamping force of the same headphones can differ significantly between people with thinner and thicker ears. For people with thinner or smaller ears, the headphones may not fit securely, while for those with thinner or larger ears, they may feel uncomfortable. This makes it difficult to cater to a wide range of users and to balance comfort and secure fit. Utility Model Content

[0004] This application provides an elastic element that, when applied to headphones, allows the headphones to be better suited for people with thin or small ears or thick or large ears, thus better balancing wearing comfort and stability.

[0005] In a first aspect, embodiments of this application provide an elastic element, the elastic element comprising at least two shape memory elements, the at least two shape memory elements constituting the elastic element by a twisting and / or weaving method.

[0006] In a second aspect, there is an earphone, the earphone comprising a first component, a connecting portion, and a second component, the connecting portion having a third end and a fourth end; the first component is connected to the third end, and the second component is connected to the fourth end;

[0007] The connecting portion includes an elastic element as described in the embodiments of this application, the third end of the connecting portion includes the first end of the elastic element, and the fourth end of the connecting portion includes the second end of the connecting portion.

[0008] The elastic element in this embodiment includes at least two shape memory elements, which are formed by twisting and / or weaving. The elastic element has a natural state, and when it undergoes elastic deformation, it tends to return to its natural state. This allows the elastic element to expand outwards from its opposite ends (i.e., expand or move in opposite directions), and as the distance of outward expansion from its opposite ends increases, the increase in the restoring force generated by the elastic element is relatively slow or gradual. This makes it suitable for people with thin or small ears or thick or large ears when wearing the headphones, as well as people with large ears. The clamping forces generated between the components are relatively similar; that is, as the distance between the first and second components increases, the change in clamping force between them is small. Therefore, by designing the total diameter of the elastic element, the diameter of a single shape memory element, and the twisting and / or weaving method of the elastic element, the headphones can maintain an optimal clamping force range when worn on the ear. This range provides both a secure fit and a comfortable fit, better balancing comfort and stability. It also better accommodates people with different ear thicknesses and auricle sizes, resulting in greater adaptability and improved product competitiveness. Furthermore, for people with thicker ears or larger auricles, the headphone connection is in an expanded state for extended periods (i.e., the opposite ends of the elastic element are subjected to expansion forces in opposite directions for a prolonged period). In this embodiment, compared to using only a single, thick shape memory element, the elastic element includes at least two shape memory elements. This increases the flexibility of the elastic element, providing better bending resistance, reducing the likelihood of breakage, and thus extending its service life. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the structure of an audio device according to an embodiment of this application.

[0011] Figure 2 This is a schematic diagram of the structure of an earphone according to an embodiment of this application, wherein the earphone is in a first state.

[0012] Figure 3 This is a schematic diagram of the structure of an elastic element according to an embodiment of this application.

[0013] Figure 4This is a schematic diagram of the structure of an elastic element according to another embodiment of this application, wherein the elastic element is in a natural state.

[0014] Figure 5 These are graphs showing the relationship between the clamping force and the expansion distance of the elastic element in the embodiments of this application and related technologies. (a) is a graph showing the relationship between the clamping force and the expansion distance of the elastic element in the embodiment, and (b) is a graph showing the relationship between the clamping force and the expansion distance of the elastic element in related technologies.

[0015] Figure 6 This is a schematic diagram of the structure of an elastic element according to another embodiment of this application, wherein the elastic element is in an expanded state.

[0016] Figure 7 This is a schematic diagram of the structure of an earphone according to an embodiment of this application, wherein the earphone is in a second state.

[0017] Figure 8 This is a schematic diagram of the structure of an earphone according to another embodiment of this application, wherein the earphone is in a first state.

[0018] Figure 9 This is a circuit block diagram of an earphone according to an embodiment of this application.

[0019] Figure 10 This is a schematic diagram of the structure of an earphone according to another embodiment of this application, wherein the earphone is in a first state.

[0020] Figure 11 This is a schematic diagram of the cross-section of the connection portion according to an embodiment of this application.

[0021] Figure 12 This is a structural schematic diagram of the cross-section of the connecting portion according to another embodiment of this application.

[0022] Figure 13 This is a structural schematic diagram of the cross-section of the connection portion according to another embodiment of this application.

[0023] Figure 14 This is a schematic diagram of the cross-section of the connection portion in one embodiment of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100-Earphone, 101-Wearing space, 10-First component, 11-First housing, 111-First receiving cavity, 112-Sound outlet, 13-Speaker, 12-Connecting end, 14-Free end, 30-Connecting part, 31-Elastic element, 311-Shape memory element, 312-First end, 314-Second end, 32-Connecting tube, 33-Flexible circuit board, 331-First signal line, 332-Insulating substrate, 34-Cable, 341-Second signal line, 342-Sleeve, 35-Third end, 36-Fourth end, 50-Second component, 51-Second housing, 511-Second receiving cavity, 52-Main board, 53-Battery, 200-Audio device, 210-Earphone case, 211-Receiving cavity. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0028] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0029] It should be noted that, for ease of explanation, the same reference numerals denote the same components in the embodiments of this application, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0030] Open-ear stereo (OWS) headphones offer significantly improved comfort compared to true wireless stereo (TWS) headphones because they don't penetrate deep into the ear canal. Therefore, they are popular among users who experience discomfort with TWS headphones. Currently, OWS headphones are mainly available in two styles: clip-on and ear-hook. Clip-on headphones clip the acoustic components and battery onto the ear via a connection point; ear-hook headphones hang on the ear via an ear hook.

[0031] When OWS headphones are worn, excessive clamping force from the connector can cause ear pain; insufficient clamping force can cause the headphones to fall out. However, the distribution of the human ear is quite varied, resulting in significant differences in clamping force between people with thinner and thicker ears. For those with thinner or smaller ears, the headphones may not fit securely, while for those with larger ears, they may feel uncomfortable. This makes it difficult to cater to a wide range of users and to balance comfort and secure fit.

[0032] Therefore, embodiments of this application provide an elastic element, headphones, and an audio device.

[0033] Please see Figure 1 This application embodiment also provides an audio device 200, which includes: an earphone case 210 and the earphone 100 described in this application embodiment; the earphone case 210 has a receiving cavity 211; the earphone 100 is received in the receiving cavity 211.

[0034] Alternatively, the earphone case 210 may only have the function of accommodating the earphones 100.

[0035] In other embodiments, the earphone case 210 can also charge the earphones 100. For example, the earphone case 210 has a power supply module or power supply circuit that can store electrical energy and charge the earphones 100.

[0036] Optionally, the audio device 200 may include one or two headphones 100.

[0037] It is understood that the audio device 200 described in this embodiment is merely one form of the audio device 200 used by the headphones 100, and should not be construed as a limitation on the audio device 200 provided in this application, nor should it be construed as a limitation on the headphones 100 provided in various embodiments of this application.

[0038] Figure 2 This is a schematic diagram of the structure of an earphone 100 according to an embodiment of this application, wherein the earphone 100 is in a first state.

[0039] Please see Figure 1 and Figure 2 This application provides an earphone 100, which includes a first component 10, a connecting part 30 (also known as a connecting bridge) and a second component 50; one end of the connecting part 30 is connected to the first component 10, and the other end of the connecting part 30 is connected to the second component 50, and the connecting part 30 includes an elastic element 31 (also known as a shape memory metal cord).

[0040] The earphone 100 in this application embodiment can be, but is not limited to, an open-earable stereo earphone 100. This type of earphone 100 does not block the ear canal when worn, and transmits sound through air conduction / bone conduction, providing better comfort for extended wear.

[0041] It should be noted that the first component 10, the connecting part 30 and the second component 50 define a wearing space 101, which is used to wear on the target object.

[0042] Optionally, the elastic member 31 extends from one end of the connecting portion 30 near the first component 10 to one end of the connecting portion 30 near the second component 50.

[0043] Optionally, the earphone 100 of this application can be either a clip-on earphone 100 or an ear-hook earphone 100. In the accompanying drawings of this application, the earphone 100 is illustrated as a clip-on earphone 100, which is merely one form of the earphone 100 of this application and should not be construed as a limitation on the earphone 100 of the embodiments of this application.

[0044] It should be noted that the first component 10 and the second component 50 are respectively connected to the opposite ends of the connecting portion 30, and the first component 10 and the second component 50 are located on the same side of the connecting portion 30.

[0045] Optionally, the first component 10 is an acoustic component, and the second component 50 is a clamping component or a battery component.

[0046] Optionally, the object to be worn may be, but is not limited to, a human ear, an ear model, etc.

[0047] Optionally, the connecting portion 30 has an arc-shaped structure, and the radius of curvature of the connecting portion 30 can be equal or gradually varied along the extending direction of the connecting portion 30. Optionally, the elastic member 31 has an arc-shaped structure, and the radius of curvature of the elastic member 31 can be equal or gradually varied along the extending direction of the elastic member 31.

[0048] Understandably, the first component 10 and the second component 50 are disposed opposite to each other. The first component 10, the connecting portion 30 and the second component 50 are generally arc-shaped, C-shaped, U-shaped or teardrop-shaped, etc.

[0049] Optionally, the elastic element 31 has elastic deformation. When the first component 10 and the second component 50 move in opposite directions, so that the opposite ends of the elastic element 31 expand in opposite directions, the elastic element 31 generates an elastic restoring force, thereby causing the first component 10 and the second component 50 to tend to move closer to each other, that is, generating opposing forces (also known as clamping forces).

[0050] It should be noted that the first component 10 is used for sound generation. When the earphone 100 is worn on a person's ear, the first component 10 is located in the concha of the ear, and the second component 50 is located on the back of the ear. That is, the first component 10 abuts against the concha of the ear, and the second component 50 abuts against the back of the ear. The initial distance between the first component 10 and the second component 50 is less than the minimum thickness of the ear. Therefore, the ear will push the first component 10 and the second component 50 apart, increasing the distance between the first component 10 and the second component 50. This increases the outward expansion force on the opposite ends of the connecting portion 30. The connecting portion 30 includes an elastic member 31. When the opposite ends of the elastic member 31 expand outward, they generate an elastic restoring force that brings them closer together. Under the action of this elastic restoring force, the opposite ends of the connecting portion 30 generate a clamping force that brings them closer together (that is, a clamping force is generated between the first component 10 and the second component 50). This causes the first component 10 and the second component 50 to clamp the opposite sides of the ear, making the earphone 100 fit on the ear and less likely to fall off.

[0051] It is understood that the earphone 100 described in this embodiment is merely one form of the earphone 100 used with the elastic member 31, and should not be construed as a limitation on the earphone 100 provided in this application, nor should it be construed as a limitation on the elastic member 31 provided in various embodiments of this application.

[0052] Figure 3 This is a schematic diagram of the structure of the elastic element 31 according to an embodiment of this application.

[0053] Please see Figure 3 This application embodiment also provides an elastic element 31, which includes at least two shape memory elements 311. The at least two shape memory elements 311 are configured to form the elastic element 31 by twisting and / or weaving.

[0054] The elastic element 31 of this application can be applied to the earphone 100 and embedded in the connection part of the earphone 100. When the first part 10 and the second part 50 of the earphone 100 expand in opposite directions, the elastic element 31 generates an elastic restoring force, thereby causing the first part 10 and the second part 50 to tend to move closer to each other, that is, to generate opposing forces (also known as clamping force).

[0055] It should be noted that the elastic element 31 in this application embodiment is described and illustrated using an earphone 100 as an example, and should not be construed as a limitation on the elastic element 31 in this application embodiment. The elastic element 31 in this application can also be applied to electronic devices that require elastic connection between different components to generate elastic restoring force.

[0056] Optionally, the elastic element 31 is a curved structure. Optionally, the shape of the elastic element 31 can be, but is not limited to, an arc-shaped structure, a C-shaped structure, a U-shaped structure, or a teardrop-shaped structure. Optionally, the elastic element 31 can be a curved strip structure.

[0057] Understandably, the elastic element 31 has shape memory function and good elastic deformation.

[0058] Understandably, the elastic element 31 extends along the extension direction of the connecting portion 30.

[0059] Understandably, at least two shape memory elements 311 are intertwined, twisted, and / or woven together to form a shape memory rope with an integral structure.

[0060] Understandably, at least two shape memory elements 311 can be formed by twisting; or at least two shape memory elements 311 can be formed by weaving; or at least two shape memory elements 311 can be formed by partially twisting and partially weaving.

[0061] Figure 4 This is a schematic diagram of the structure of the elastic member 31 according to another embodiment of this application, wherein the elastic member 31 is in a natural state.

[0062] Please see Figure 4 The elastic element 31 has a natural state and tends to return to its natural state when the elastic element 31 undergoes elastic deformation.

[0063] The natural state refers to the state in which the elastic element 31 is not subject to external force.

[0064] It should be noted that the natural state of the elastic element 31 refers to the state in which the elastic element 31 is not subjected to external force. In the schematic diagram of the accompanying drawings of this application, the natural state is only one or more of the many natural states of the elastic element 31, and should not be construed as limiting the natural state of the embodiments of this application.

[0065] like Figure 5 As shown, for the same diameter, the elastic element 31 is a single metal wire (e.g. Figure 5 As shown in (b), when the earphone 100 is worn on the ear, and the two ends of the elastic member 31 expand outward, the elastic member 31 generates an elastic restoring force. Under the action of the elastic restoring force, a clamping force is generated between the first component 10 and the second component 50. The clamping force generated by the elastic member 31 between the first component 10 and the second component 50 increases significantly with the increase of the distance the two ends of the elastic member 31 expand outward. The distance the two ends of the elastic member 31 expand outward has a significant impact on the magnitude of the clamping force generated by the connecting part 30. Therefore, for people with thin ears or small auricles, the earphone 100 may not be securely worn due to insufficient clamping force and may easily fall off; for people with thick ears or large auricles, the clamping force may be too large, resulting in discomfort.

[0066] The elastic element 31 described in this embodiment includes at least two shape memory elements 311. These at least two shape memory elements 311 are formed by twisting and / or weaving to create the elastic element 31. The elastic element 31 has a natural state, and when it undergoes elastic deformation, it tends to return to its natural state. For example... Figure 5As shown in (a), the elastic element 31 of this application is formed by twisting and / or weaving at least two shape memory elements 311. This allows the elastic element 31 to expand outwards from its opposite ends (i.e., expand or move in opposite directions). As the distance of the outward expansion of the elastic element 31 from its opposite ends increases, the increase in the restoring force generated by the elastic element 31 is relatively slow or gradual. This results in a more similar clamping force between the first component 10 and the second component 50 when people with thinner or smaller ears and people with thicker or larger ears wear the earphone 100. That is, as the distance between the first component 10 and the second component 50 increases... With the addition of the first component 10, the change in clamping force between the second component 50 is small. Thus, by designing the total diameter of the elastic element 31, the diameter of the individual shape memory element 311, and the twisting and / or weaving method of the elastic element 31, the earphone 100 can be kept within the optimal clamping force range when worn on a person's ear. This means that it can be firmly clamped to the ear while also having a high degree of comfort. This better balances comfort and firmness and can also better accommodate people with different ear thicknesses and auricle sizes, making the earphone 100 more adaptable and improving the product's competitiveness. Furthermore, for people with thicker ears or larger auricles, when the earphone 100 is worn, the connection part 30 of the earphone 100 is in an expanded state for a long time (that is, the opposite ends of the elastic element 31 are subjected to an expansion force in opposite directions for a long time). In this embodiment, compared with using only a single thick shape memory element 311, the elastic element 31 includes at least two shape memory elements 311, which can increase the flexibility of the elastic element 31, have better bending resistance, and be less prone to breakage, thereby having a longer service life.

[0067] Furthermore, when at least two shape memory elements 311 are arranged in parallel, they cannot form a combined force, resulting in lower mechanical strength of the elastic element 31. The shape memory elements 311 are prone to breakage under stress, reducing their service life. Adjacent shape memory elements 311 are also prone to friction, producing abnormal noise and deformation. Compared to directly parallel arrangement of at least two shape memory elements 311, the elastic element 31 in this embodiment uses at least two shape memory elements 311 twisted and / or woven together, allowing them to better form a combined force. With a smaller diameter, the opposite ends of the elastic element 31 can generate a larger restoring force when expanding in opposite directions, resulting in a larger clamping force between the first component 10 and the second component 50, thus reducing the cost of the elastic element 31 and the earphone 100. In addition, the elastic element 31 of this application is less prone to friction between the at least two shape memory elements 311, reducing the likelihood of abnormal noise and deformation during use.

[0068] In this embodiment, the elastic element 31 has a natural state. When the elastic element 31 undergoes elastic deformation, it tends to return to its natural state, where the natural state is the state where the elastic element 31 is not subjected to external force. Therefore, when the elastic element 31 is applied to the earphone 100, if the distance between the first component 10 and the second component 50 changes—for example, if the distance between the first component 10 and the second component 50 gradually increases—the elastic element 31 undergoes elastic deformation. Because the elastic element 31 tends to return to its natural state, this tendency causes the first component 10 and the second component 50 to tend to move in opposite directions, i.e., the distance between the first component 10 and the second component 50 tends to decrease. This allows the first component 10 and the second component 50 to be held in place in the ear and prevents them from falling out.

[0069] In some embodiments, the elastic element 31 has a curved structure. This allows the elastic element 31 to better match the shape of the earphone 100, enabling the earphone 100 to undergo elastic deformation better between the unworn and worn states.

[0070] Figure 6 This is a schematic diagram of the structure of the elastic member 31 according to another embodiment of this application, wherein the elastic member 31 is in an expanded state.

[0071] Please see also Figure 4 and Figure 6 In some embodiments, when the elastic member 31 has a natural state and an expanded state, the elastic member 31 has a first end 312 and a second end 314; when the elastic member 31 is in the expanded state, the distance between the first end 312 and the second end 314 is greater than the distance between the first end 312 and the second end 314 when the elastic member 31 is in the natural state.

[0072] In other words, when the elastic element 31 is in its natural state, the first end 312 and the second end 314 have a first distance, and when the elastic element 31 is in its expanded state, the first end 312 and the second end 314 have a second distance, and the first distance is less than the second distance.

[0073] Optionally, the first end 312 and the second end 314 are opposite ends of the elastic member 31.

[0074] In some embodiments, when the elastic member 31 has a natural state and an expanded state, the elastic member 31 has a first end 312 and a second end 314 disposed opposite to each other. When the elastic member 31 is in the expanded state, the first end 312 and the second end 314 generate an elastic restoring force that moves closer to each other, so that the elastic member 31 returns from the expanded state to the natural state. The natural state is the state in which the elastic member 31 is not subject to external force.

[0075] In other words, the elastic element 31 generates a tendency to restore the distance between the first end 312 and the second end 314 to a smaller extent.

[0076] In other words, when the elastic element 31 is in an expanded state, it has a tendency to return to its natural state. Understandably, this tendency refers to the tendency of the elastic element 31 to return from its current state to its natural state.

[0077] Understandably, the expansion state is a state in which the opposite ends of the elastic member 31 generate elastic restoring forces that bring them closer together. That is, the first end 312 and the second end 314 generate elastic restoring forces that bring them closer together.

[0078] Optionally, the first end 312 is connected to the first component 10, and the second end 314 is connected to the second component 50.

[0079] It should be noted that when the first end 312 and the second end 314 of the elastic member 31 approach each other under the action of an external force until the distance between the first end 312 and the second end 314 is less than the distance between the first end 312 and the second end 314 when the elastic member 31 is in its natural state, the elastic member 31 will generate an elastic restoring force, so that the first end 312 and the second end 314 of the elastic member 31 move in opposite directions, thereby restoring the elastic member 31 to its natural state.

[0080] In this embodiment, when the elastic member 31 has a natural state and an expanded state, the elastic member 31 has a first end 312 and a second end 314 disposed opposite to each other. When the elastic member 31 is in the expanded state, the distance between the first end 312 and the second end 314 is greater than the distance between the first end 312 and the second end 314 when the elastic member 31 is in the natural state. When the elastic member 31 is in the expanded state, the first end 312 and the second end 314 generate an elastic restoring force that moves closer to each other, so that the elastic member 31 returns from the expanded state to the natural state. The natural state is the state in which the elastic member 31 is not subject to external force. Thus, when the elastic element 31 is applied to the earphone 100, when the distance between the first component 10 and the second component 50 changes, for example, when the distance between the first component 10 and the second component 50 gradually increases, the first end 312 and the second end 314 of the elastic element 31 move in opposite directions, thereby undergoing elastic deformation. The first end 312 and the second end 314 of the elastic element 31 generate an elastic restoring force that brings the first component 10 and the second component 50 closer to each other. This elastic restoring force makes the first component 10 and the second component 50 have a force that brings them closer to each other, so that the first component 10 and the second component 50 can be clamped in the ear and are not easy to fall off.

[0081] In some embodiments, when the elastic member 31 is in an expanded state, as the distance between the first end 312 and the second end 314 increases, the elastic restoring force generated between the first end 312 and the second end 314 gradually increases.

[0082] In other words, when the elastic element 31 is in an expanded state, the distance between the first end 312 and the second end 314 is positively correlated with the elastic restoring force generated by the elastic element 31 that reduces the distance between the first end 312 and the second end 314.

[0083] In other words, when the elastic element 31 is in an expanded state, the second distance and the elastic restoring force corresponding to the recovery trend are positively correlated.

[0084] Optionally, the difference between the second distance and the first distance is defined as the expansion distance. Understandably, as the distance between the first end 312 and the second end 314 gradually increases, the expansion distance gradually increases. As the expansion distance increases, the elastic restoring force generated between the first end 312 and the second end 314 of the elastic member 31 gradually increases, and the clamping force generated between the first component 10 and the second component 50 gradually increases.

[0085] The elastic element 31 of this application is formed by twisting and / or weaving multiple shape memory elements 311. Therefore, as the expansion distance increases, the increase in clamping force between the first component 10 and the second component 50 is smaller and more stable, which can better adapt to people with different ear thicknesses and auricle sizes.

[0086] In some embodiments, the shape memory element 311 has a circular cross-section, and the diameters of the circular cross-sections of the at least two shape memory elements 311 are different or the same, and the diameter of the shape memory element 311 ranges from 0.07 mm to 0.25 mm.

[0087] Specifically, the diameter of the shape memory component 311 can be, but is not limited to, 0.07mm, 0.08mm, 0.09mm, 0.10mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, 0.20mm, 0.21mm, 0.22mm, 0.23mm, 0.24mm, 0.25mm, etc.

[0088] In some embodiments, the diameters of at least two shape memory elements 311 in the elastic element 31 may be equal. In other embodiments, the diameters of at least two shape memory elements 311 in the elastic element 31 may also be unequal. In still other embodiments, the diameters of at least two shape memory elements 311 in the elastic element 31 may also be partially equal and partially unequal. In yet another embodiment, the diameters of different positions of the same shape memory element 311 may be different. In still another embodiment, the diameters of different positions of the same shape memory element 311 are the same.

[0089] Optionally, the cross-section of the shape memory device 311 can be at least one of a circle, an approximately circle, an ellipse, or an approximately ellipse. When the cross-section of the shape memory device 311 is not circular, the diameter of the shape memory device 311 is the equivalent diameter of the shape memory device 311, that is, the diameter of a circle with the same area as the cross-section.

[0090] In this embodiment, with the radial dimension of the elastic element 31 remaining constant, a smaller diameter and a greater number of shape memory elements 311 result in a smoother (or more gradual) increase in the shape recovery force generated by the elastic element 31 as the distance between the first end 312 and the second end 314 increases. This also leads to a smoother increase in the clamping force between the first component 10 and the second component 50, which is more conducive to improving the comfort and fit of the earphone 100 (better suited for people with different ear thicknesses and auricle sizes). However, if the diameter of the shape memory element 311 is too small, it increases the manufacturing cost of the shape memory element 311 and the difficulty of twisting or weaving the elastic element 31, thus increasing the cost of the earphone 100. If the diameter of the shape memory element 311 is too large, the improvement effect on the smoothness of the recovery force generated by the elastic element 31 is not significant, nor is the improvement effect on the smoothness of the increase in the clamping force between the first component 10 and the second component 50. This makes the earphone 100 difficult to suit people with different ear thicknesses and auricle sizes, hindering the improvement of the earphone 100's fit.

[0091] Furthermore, the diameter of the shape memory element 311 ranges from 0.1 mm to 0.25 mm. This allows the elastic element 31 to have lower cost, be easier to twist or braid, and make the increase in the restoring force of the elastic element 31 as the expansion distance increases more smoothly. As a result, the increase in the clamping force between the first component 10 and the second component 50 as the expansion distance increases is more smooth, which is more conducive to the headphone 100 adapting to people with different ear thicknesses and ear sizes.

[0092] Furthermore, the diameter of the shape memory element 311 ranges from 0.13mm to 0.25mm. This allows the elastic element 31 to have lower cost, be easier to twist or braid, and make the increase in the restoring force of the elastic element 31 more stable as the expansion distance increases. This makes the increase in the clamping force between the first component 10 and the second component 50 more stable as the expansion distance increases, which is more conducive to the headphone 100 adapting to people with different ear thicknesses and ear sizes.

[0093] In some embodiments, the radial dimension of the elastic element 31 ranges from 0.5 mm to 0.8 mm.

[0094] Specifically, the radial dimension of the elastic element 31 can be, but is not limited to, 0.5mm, 0.52mm, 0.54mm, 0.56mm, 0.58mm, 0.6mm, 0.62mm, 0.64mm, 0.66mm, 0.68mm, 0.7mm, 0.72mm, 0.74mm, 0.76mm, 0.78mm, 0.8mm, etc.

[0095] In this embodiment, if the radial dimension of the elastic element 31 is too small, the shape-restoring force generated when the first end 312 and the second end 314 of the elastic element 31 expand or move in opposite directions will be too small. This results in a weak second clamping force between the first component 10 and the second component 50, making the earphone 100 not secure enough when worn in the ear and prone to falling off. If the radial dimension of the elastic element 31 is too large, the shape-restoring force generated when the first end 312 and the second end 314 of the elastic element 31 expand or move in opposite directions will be too large. This results in an excessive second clamping force between the first component 10 and the second component 50, affecting the comfort of wearing the earphone 100. Furthermore, an excessively large radial dimension of the elastic element 31 increases the material cost of the earphone 100 and makes the size of the connecting part 30 too large, which is not conducive to the miniaturization of the earphone 100 and reduces the appearance of the earphone 100.

[0096] Furthermore, the radial dimension of the elastic element 31 ranges from 0.55 mm to 0.7 mm. This ensures that when the first end 312 and the second end 314 of the elastic element 31 expand or move in opposite directions, the shape-restoring force generated by the elastic element 31 is relatively consistent. This allows for a suitable second clamping force between the first component 10 and the second component 50 when the earphone 100 is worn, thus ensuring that the earphone 100 is securely clamped to the ear without causing discomfort to the user due to excessive clamping force.

[0097] In some embodiments, the elastic element 31 includes 2 to 11 of the shape memory elements 311.

[0098] Specifically, the number of shape memory elements 311 in the elastic element 31 can be, but is not limited to, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, etc.

[0099] In this embodiment, with the radial dimension of the elastic element 31 remaining constant, the more shape memory elements 311 there are, the smaller the diameter of the shape memory elements 311. As the distance between the first end 312 and the second end 314 increases, the increase in the shape restoring force of the elastic element 31 becomes more stable, and the increase in the clamping force between the first component 10 and the second component 50 becomes more stable, which is more conducive to improving the comfort and fit of the earphone 100. However, if the number of shape memory elements 311 in the elastic element 31 is too large, the diameter of the shape memory elements 311 becomes too small, increasing the manufacturing cost of the shape memory elements 311 and increasing the difficulty of twisting or weaving the elastic element 31, thereby increasing the cost of the earphone 100. If the number of shape memory elements 311 in the elastic element 31 is too small, the diameter of the shape memory elements 311 will be too large. This will not significantly improve the stability of the restoring force generated by the elastic element 31, nor will it significantly improve the stability of the increased clamping force between the first component 10 and the second component 50. As a result, the headphones 100 will be difficult to use for people with different ear thicknesses and auricle sizes, which is not conducive to improving the adaptability of the headphones 100.

[0100] In some embodiments, the number of shape memory elements 311 is odd.

[0101] Specifically, the number of shape memory elements 311 in the elastic element 31 can be, but is not limited to, 3, 5, 7, 9, etc.

[0102] In this embodiment, an odd number of shape memory elements 311 are used to twist or braid the elastic element 31. This is more conducive to the arrangement of multiple shape memory elements 311, making the twisted or braided elastic element 31 fuller and forming a more regular circle (i.e., a more approximately circular structure). This results in less force loss in the elastic element 31. When the elastic element 31 expands or moves in opposite directions at the first end 312 and the second end 314, it can maintain a relatively high shape recovery force. This allows the elastic element 31 to have a high shape recovery force with only a small diameter, reducing the size of the elastic element 31, lowering the cost of the elastic element 31, and reducing the size of the connecting part 30, making the earphone 100 more miniaturized and having a better appearance.

[0103] In some embodiments, the twisting method of the elastic element 31 includes at least one of concentric twisting, bundle twisting, compound twisting, fan-shaped twisting, unit twisting, untwisting twisting, and cross twisting; the weaving method of the elastic element 31 includes at least one of three-strand braid, four-strand braid, eight-strand braid, fishtail braid, circular braid, twisted rope, flat braid, hollow braid, spiral braid, twisted rope braid, and mesh interweaving. By using these twisting or weaving methods to twist or weave the shape memory components 311, the multiple shape memory components 311 of the resulting elastic component 31 can better form a combined force. A smaller diameter can generate a larger restoring force, resulting in a larger clamping force between the first component 10 and the second component 50, thus better reducing the cost of the elastic component 31 and the cost of the earphone 100. In addition, by using these twisting or weaving methods, when the opposite ends of the shape memory metal components move in opposite directions, the restoring force generated by the shape memory metal components increases less or more slowly as the distance between the opposite ends of the shape memory metal components increases. This makes the clamping force generated between the first component 10 and the second component 50 more similar when people with thinner or smaller ears and people with thicker or larger ears wear the earphone 100. The earphone 100 can better accommodate people with different ear thicknesses and ear sizes, making the earphone 100 more adaptable.

[0104] In some embodiments, the shape memory element 311 includes at least one of memory wire, memory metal wire, and memory metal filament. In this embodiment, by using these shape memory elements 311, the elastic element 31 can have a larger deformation, and in addition, it has higher fatigue resistance and a longer lifespan. It can maintain its shape recovery performance after more (e.g., millions of) repeated deformations, thereby improving the service life of the earphone 100.

[0105] In some embodiments, the shape memory element 311 includes at least one of titanium-nickel alloy wire (Ti-Ni alloy wire), copper-based alloy wire (such as Cu-Al-Ni alloy wire), and iron-based alloy wire (such as Fe-Mn-Si alloy wire).

[0106] In this embodiment, using these alloy wires as shape memory elements 311 allows the elastic element 31 to have greater deformation. In addition, it has higher fatigue resistance and longer lifespan, and can maintain its shape recovery performance after more (e.g., millions of) repeated deformations, thereby improving the service life of the earphone 100.

[0107] Figure 7 This is a schematic diagram of the structure of an earphone 100 according to an embodiment of this application, wherein the earphone 100 is in a second state.

[0108] Please see Figure 7 The connecting portion 30 has a third end 35 and a fourth end 36. The first component 10 is connected to the third end 35, and the second component 50 is connected to the fourth end 36. The third end 35 of the connecting portion 30 includes the first end 312 of the elastic member 31, and the fourth end 36 of the connecting portion 30 includes the second end 314 of the connecting portion 30.

[0109] Understandably, the first end 312 and the third end 35 are both located close to the first component 10, and the second end 314 and the fourth end 36 are both located close to the second component 50.

[0110] Please see also Figure 2 , Figures 4 to 7 In some embodiments, the earphone 100 has a first state and a second state. In the first state, there is a third distance between the first component 10 and the second component 50. In the second state, there is a fourth distance between the first component 10 and the second component 50. The third distance is smaller than the fourth distance.

[0111] In some embodiments, when the earphone 100 is in a first state, the elastic member 31 is in an expanded state, and when the earphone 100 is in a second state, the elastic member 31 is in an expanded state.

[0112] Please see also Figure 2 , Figures 4 to 7 In some embodiments, the connecting portion 30 is in an arc-shaped structure (at which time the elastic member 31 is in a bent structure), the elastic member 31 has a natural state and an expanded state, and the earphone 100 has a first state and a second state. When the earphone 100 is in the first state, the elastic member 31 is in the expanded state, and the first component 10 and the second component 50 are abutted against each other, that is, the third distance is zero.

[0113] In some embodiments, when the earphone 100 is in the second state, the elastic member 31 is in an expanded state, and the opposite ends of the elastic member 31 generate an elastic restoring force that brings the first component 10 and the second component 50 closer together, so that the first component 10 and the second component 50 tend to move closer together. In other words, the elastic member 31 generates a restoring tendency that reduces the distance between the first end 312 and the second end 314.

[0114] The natural state refers to the state in which the elastic element 31 is not subjected to external force, and the expanded state refers to the state in which the opposite ends (i.e., the first end 312 and the second end 314) of the elastic element 31 generate an elastic restoring force that brings them closer together. That is, the elastic element 31 generates an elastic restoring force that reduces the distance between the first end 312 and the second end 314.

[0115] Understandably, the elastic restoring force generated by the elastic element 31 when the earphone 100 is in the second state is greater than the elastic restoring force generated by the elastic element 31 when the earphone 100 is in the first state. In other words, the expansion distance of the elastic element 31 when the earphone 100 is in the second state is greater than the expansion distance of the elastic element 31 when the earphone 100 is in the first state.

[0116] In other words, when the earphone 100 is in the first state, the elastic member 31 is in the expanded state, the first component 10 and the second component 50 are abutting each other, the elastic member 31 is in the expanded state, and there is a first clamping force between the first component 10 and the second component 50; when the earphone 100 is in the second state, there is a second clamping force between the first component 10 and the second component 50, and the second clamping force is greater than the first clamping force. In this case, the natural state is the state in which the elastic member 31 is not subjected to external force, the expanded state is the state in which the opposite ends of the elastic member 31 generate an elastic restoring force that moves closer to each other, the first state is the state in which the earphone 100 is not subjected to external force, and the second state is the state in which the earphone 100 is subjected to external force in opposite directions.

[0117] Optionally, the first state refers to the state where the earphone 100 is not worn. The second state refers to the state where the earphone 100 is worn on the target object.

[0118] Understandably, in this embodiment, when the earphone 100 is in the first state, the first end 312 and the second end 314 (i.e. the opposite ends of the elastic member 31) of the elastic member 31 expand outward compared to the natural state, that is, the elastic member 31 has deformation at this time.

[0119] Optionally, the range of the first clamping force is 0.3N to 1.4N. Further, the range of the first clamping force is 0.4N to 1.0N. Specifically, the first clamping force can be, but is not limited to, 0.3N, 0.4N, 0.5N, 0.6N, 0.7N, 0.8N, 0.9N, 1.0N, 1.1N, 1.2N, 1.3N, 1.4N, etc. If the first clamping force when the earphone 100 is not worn is too small, the earphone 100 may not be securely worn and may easily fall off; if the first clamping force when the earphone 100 is not worn is too large, the clamping force on the ears will be too large when worn, reducing the comfort of wearing the earphone 100 and easily causing discomfort.

[0120] In the embodiments of this application, when the numerical range a to b is involved, unless otherwise specified, the numerical value can be any value between a and b, including the endpoint value a and the endpoint value b.

[0121] Optionally, the second clamping force ranges from 0.4N to 1.5N. Further, the second clamping force ranges from 0.4N to 1.0N. Specifically, the second clamping force can be, but is not limited to, 0.4N, 0.5N, 0.6N, 0.7N, 0.8N, 0.9N, 1.0N, 1.1N, 1.2N, 1.3N, 1.4N, 1.5N, etc. If the second clamping force is too small when the earphone 100 is worn, the earphone 100 may not be securely worn and may easily fall off; if the second clamping force is too large, the clamping force on the ears will be too great, reducing the comfort of wearing the earphone 100 and easily causing discomfort.

[0122] In this embodiment, when the earphone 100 is in the first state (i.e., the unworn state), the elastic member 31 is in an expanded state, thereby generating a first clamping force between the first component 10 and the second component 50 when the earphone 100 is not worn. When the earphone 100 is worn on the target object, the distance between the first component 10 and the second component 50 increases, causing the opposite ends of the elastic member 31 to expand further in opposite directions, thereby further increasing the second clamping force generated between the first component 10 and the second component 50. However, since the elastic member 31 of this application is formed by twisting and / or weaving multiple shape memory elements 311, as the distance of expansion of the opposite ends of the elastic member 31 in opposite directions increases, its restoring force (i.e., clamping force) increases relatively slowly, thereby keeping the second clamping force between the first component 10 and the second component 50 in a relatively stable state. In this embodiment, when the earphone 100 is in the first state, there is a first clamping force between the first component 10 and the second component 50. This makes the earphone 100 more secure and less likely to fall off when worn on the target object. At the same time, since the clamping force increases very slowly after the elastic member 31 expands in opposite directions at its two ends, the increase of the second clamping force is relatively stable when the earphone 100 is worn on the target object. Therefore, the earphone will not feel uncomfortable due to excessive second clamping force, thus balancing the secureness and comfort of wearing the earphone 100.

[0123] Please see again Figure 2 , Figures 4 to 7 In other embodiments, when the earphone 100 is in the first state, the elastic member 31 is in the natural state; when the earphone 100 is in the second state, the elastic member 31 is in the expanded state.

[0124] Optionally, in this embodiment, the third distance is greater than zero.

[0125] Understandably, in this embodiment, when the earphone 100 is in the first state, there is a first clamping force between the first component 10 and the second component 50, and the first clamping force is zero. When the earphone 100 is in the second state, there is a second clamping force between the first component 10 and the second component 50, and the second clamping force is greater than zero.

[0126] Understandably, in this embodiment, when the earphone 100 is in the first state (i.e., not worn state), the first clamping force between the first component 10 and the second component 50 is zero.

[0127] Understandably, when the earphone 100 is not worn, the first component 10 and the second component 50 are spaced apart.

[0128] Optionally, the third distance ranges from 3mm to 18mm. Specifically, the third distance can be, but is not limited to, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, etc. If the initial distance between the first component 10 and the second component 50 is too small, when the clamping force generated between the first component 10 and the second component 50 of the elastic member 31 increases significantly with the increase of the expansion distance, for people with thick ears or large auricles, the clamping force generated between the first component 10 and the second component 50 is easily too large, resulting in discomfort. If the initial distance between the first component 10 and the second component 50 is too large, when the earphone 100 is worn, the clamping force generated between the first component 10 and the second component 50 is too small, making the earphone 100 not securely worn and easy to fall off, affecting the user experience.

[0129] Furthermore, the third distance can range from 3.5mm to 15mm. This allows for a suitable clamping force between the first component 10 and the second component 50 when the earphone 100 is worn, making the earphone 100 more secure while also providing better comfort.

[0130] Furthermore, the third distance can range from 4mm to 12mm. This allows for a suitable clamping force between the first component 10 and the second component 50 when the earphone 100 is worn, making the earphone 100 more secure while also providing better comfort.

[0131] Optionally, the second clamping force ranges from 0.4N to 1.5N. Further, the second clamping force ranges from 0.4N to 1.0N. Specifically, the second clamping force can be, but is not limited to, 0.4N, 0.5N, 0.6N, 0.7N, 0.8N, 0.9N, 1.0N, 1.1N, 1.2N, 1.3N, 1.4N, 1.5N, etc. If the second clamping force is too small when the earphone 100 is worn, the earphone 100 may not be securely worn and may easily fall off; if the second clamping force is too large, the clamping force on the ears will be too great, reducing the comfort of wearing the earphone 100 and easily causing discomfort.

[0132] In this embodiment, the first component 10 and the second component 50 have an initial distance, and the third distance ranges from 3mm to 18mm. This ensures that when the earphone 100 is worn on the ear (target object), especially for people with thicker ears or larger auricles, the second clamping force generated between the first component 10 and the second component 50 is not too large, thereby making the earphone 100 more comfortable to wear.

[0133] Figure 8 This is a schematic diagram of the structure of an earphone 100 according to another embodiment of this application, wherein the earphone 100 is in a first state. Figure 9 This is a circuit block diagram of an earphone 100 according to an embodiment of this application.

[0134] Please see Figure 8 and Figure 9 In some embodiments, the first component 10 includes a first housing 11 and a speaker 13 (also known as a loudspeaker), the speaker 13 being housed within the first housing 11; the connecting portion 30 further includes a connecting tube 32, one end of which is connected to the first housing 11, and the connecting tube 32 is sleeved on the outer periphery of the elastic member 31; the second component 50 includes a second housing 51, a main board 52, and a battery 53, the second housing 51 being connected to the end of the connecting tube 32 opposite to the first housing 11, the main board 52 being electrically connected to the battery 53 and the speaker 13 respectively, and both the main board 52 and the battery 53 being housed within the second housing 51.

[0135] Understandably, the connecting pipe 32 has a cylindrical structure, and the elastic element 31 passes through the connecting pipe 32.

[0136] Understandably, the first housing 11, the connecting tube 32, and the second housing 51 are connected sequentially, forming the wearing space 101. The outer surfaces of the first housing 11, the connecting tube 32, and the second housing 51 constitute the outer appearance of the earphone 100. When the earphone 100 is worn in the ear, the first housing 11 rests against the concha of the ear, the second housing 51 rests against the back of the ear, and the connecting tube 32 is suspended on the ear or located on the side of the ear.

[0137] Optionally, the connecting pipe 32 is a flexible connecting pipe; in other words, the connecting pipe 32 is flexible.

[0138] Optionally, the first housing 11 has a first receiving cavity 111 for receiving the speaker 13. The first housing 11 also has a sound outlet 112 communicating with the first receiving cavity 111, and the sound outlet 112 is provided corresponding to the speaker 13 for transmitting sound.

[0139] Understandably, the battery 53 is used to power the earphone 100.

[0140] Optionally, the second housing 51 has a second receiving cavity 511 for receiving the battery 53 and the motherboard 52.

[0141] In this embodiment, the first component 10 includes a first housing 11 and a speaker 13, the speaker 13 being housed within the first housing 11; the connecting portion 30 further includes a connecting tube 32, one end of which is connected to the first housing 11, and the connecting tube 32 is sleeved on the outer periphery of the elastic member 31; the second component 50 includes a second housing 51, a main board 52, and a battery 53, the second housing 51 being connected to the end of the connecting tube 32 opposite to the first housing 11, the main board 52 being electrically connected to the battery 53 and the speaker 13 respectively, and both the main board 52 and the battery 53 being housed within the second housing 51. The earphone 100 of this embodiment has a compact structure and simple design, and can be securely clamped to the ear. As the expansion distance between the first component 10 and the second component 50 increases, the clamping force generated between the first component 10 and the second component 50 increases relatively slowly or gradually. This makes the clamping force generated between the first component 10 and the second component 50 more similar when people with thinner or smaller ears and people with thicker or larger ears wear the earphone 100. This ensures that the earphone 100 maintains an optimal clamping force range when worn on the ear, that is, it can be securely clamped to the ear and has a high degree of comfort. This better balances comfort and security, and can also better accommodate people with different ear thicknesses and ear sizes, making the earphone 100 more adaptable.

[0142] Figure 10 This is a schematic diagram of the structure of an earphone 100 according to another embodiment of this application, wherein the earphone 100 is in a first state. Figure 11 This is a schematic diagram of the cross-section of the connecting portion 30 according to an embodiment of this application.

[0143] Please see Figure 10 and Figure 11 In some embodiments, the connecting portion 30 further includes a flexible circuit board 33 (FPC), which is housed within the connecting tube 32. The opposite ends of the flexible circuit board 33 are electrically connected to the speaker 13 and the main board 52, respectively, for electrically connecting the main board 52 and the speaker 13. The flexible circuit board 33 has a width direction (e.g., ...). Figure 11 (as indicated by the double arrow X) and the thickness direction (as shown by...) Figure 11 As indicated by the double arrow Y), the flexible circuit board 33 and the elastic element 31 are arranged along the width direction of the flexible circuit board 33.

[0144] Understandably, the connecting tube 32 is sleeved on the outer periphery of the flexible circuit board 33, and it is also understood that the flexible circuit board 33 passes through the connecting tube 32.

[0145] Understandably, the flexible circuit board 33 extends from one end of the connecting tube 32 near the first component 10 to the other end of the connecting tube 32 near the second component 50. One end of the flexible circuit board 33 is electrically connected to the speaker 13, and the other end of the flexible circuit board 33 is electrically connected to the main board 52.

[0146] Understandably, the width of the flexible circuit board 33 is greater than the thickness of the flexible circuit board 33, that is, the dimension of the flexible circuit board 33 along the width direction is greater than the dimension of the flexible circuit board 33 along the thickness direction.

[0147] Understandably, in this embodiment, the flexible circuit board 33 and the elastic element 31 are arranged side by side.

[0148] It should be noted that the flexible circuit board 33 and the elastic element 31 are insulated from each other. Optionally, the flexible circuit board 33 and the elastic element 31 are separated by resin to achieve insulation.

[0149] Optionally, the flexible circuit board 33 includes one or more first signal lines 331. When the flexible circuit board 33 includes multiple first signal lines 331, the multiple first signal lines 331 are stacked and insulated from each other. In some embodiments, the flexible circuit board 33 further includes an insulating substrate 332, which is sleeved on the outer periphery of the multiple first signal lines 331. In other words, the multiple first signal lines 331 pass through the insulating substrate 332.

[0150] The term "multiple roots" refers to two or more roots. For example, 2 roots, 3 roots, 4 roots, 5 roots, 6 roots, 7 roots, 8 roots, 9 roots, etc.

[0151] In this embodiment, the flexible circuit board 33 is used to electrically connect the motherboard 52 and the speaker 13, which can better reduce the thickness of the connection part 30, making the connection part 30 thinner and more aesthetically pleasing. It also reduces the size and weight of the earphone 100, improving wearing comfort. Using the flexible circuit board 33 can reduce the use of connectors, support high-density wiring, and further simplify the structural design of the earphone 100. Furthermore, the flexible circuit board 33 can better reduce electromagnetic interference (EMI) of high-frequency signals (such as Bluetooth audio), reduce noise, and improve sound quality. Moreover, using the flexible circuit board 33 allows for more precise impedance control, suitable for high-speed data transmission. In addition, the flexible circuit board 33 has better bending resistance and vibration resistance.

[0152] Figure 12 This is a structural schematic diagram of the cross-section of the connecting portion 30 according to another embodiment of this application.

[0153] Please see Figure 12 In some other embodiments, the connecting portion 30 further includes a flexible circuit board 33, which is housed within the connecting tube 32. The two opposite ends of the flexible circuit board 33 are electrically connected to the speaker 13 and the main board 52, respectively, for electrically connecting the main board 52 and the speaker 13. The flexible circuit board 33 has a width direction and a thickness direction, and the flexible circuit board 33 and the elastic member 31 are arranged along the thickness direction of the flexible circuit board 33.

[0154] Understandably, in this embodiment, the flexible circuit board 33 and the elastic element 31 are stacked.

[0155] It should be noted that the flexible circuit board 33 and the elastic element 31 are insulated from each other. Optionally, the flexible circuit board 33 and the elastic element 31 are separated by resin to achieve insulation.

[0156] In this embodiment, by stacking the flexible circuit board 33 and the elastic element 31 along the thickness direction of the flexible circuit board 33, the structure of the connection portion 30 can be made more diverse to meet the needs of different users. Furthermore, it can better reduce the size and weight of the earphone 100, improving wearing comfort; moreover, using the flexible circuit board 33 can reduce the use of connectors, support high-density wiring, and better simplify the structural design of the earphone 100; furthermore, the flexible circuit board 33 can better reduce electromagnetic interference (EMI) of high-frequency signals (such as Bluetooth audio), reducing noise and improving sound quality; furthermore, using the flexible circuit board 33 allows for more precise impedance control, suitable for high-speed data transmission; and furthermore, the flexible circuit board 33 has better bending resistance and vibration resistance.

[0157] Figure 13 This is a structural schematic diagram of the cross-section of the connecting portion 30 according to another embodiment of this application.

[0158] Figure 14 This is a structural schematic diagram of the cross-section of the connecting portion 30 in one embodiment of this application.

[0159] Please see also Figure 7 , Figure 13 and Figure 14 In some embodiments, the connecting tube 32 has a flat structure, and the connecting part 30 further includes a cable 34, which passes through the connecting tube 32. The cable 34 and the elastic member 31 are arranged along the width direction of the connecting tube 32. This allows the connecting part 30 to have a flat appearance, resulting in more diverse appearances.

[0160] Understandably, the width dimension of the connecting pipe 32 is greater than the thickness dimension.

[0161] In some embodiments, the two ends of the cable 34 are electrically connected to the speaker 13 and the motherboard 52 respectively, for electrically connecting the motherboard 52 and the speaker 13.

[0162] Please see also Figure 7 and Figure 13 In some embodiments, the first component 10 includes a connecting end 12 and a free end 14 disposed opposite to each other. The connecting end 12 is connected to the connecting portion 30, and the free end 14 is away from the connecting portion 30. The cable 34 and the elastic member 31 are arranged side by side along the arrangement direction of the connecting end 12 and the free end 14.

[0163] Understandably, the end of the first component 10 connected to the connecting part 30 is the connecting end 12, and the end of the first component 10 away from the connecting part 30 is the free end 14.

[0164] In some embodiments, the cable 34 is disposed on the side of the elastic member 31 opposite to the wearing space 101.

[0165] In other embodiments, the elastic element 31 is disposed on the side of the cable 34 opposite to the wearing space 101.

[0166] It should be noted that, as Figure 7 As shown, in this embodiment, the cable 34 and the elastic member 31 first move along... Figure 7 After arranging them vertically, they are then bent.

[0167] Optionally, the cable 34 includes one or more second signal lines 341. When the cable 34 includes multiple second signal lines 341, the multiple second signal lines 341 are stacked and insulated from each other. In some embodiments, the cable 34 further includes a sleeve 342, which is sleeved around the outer periphery of the second signal lines 341; in other words, the second signal lines 341 pass through the sleeve 342. When the cable 34 includes multiple second signal lines 341, the multiple second signal lines 341 form a wire harness.

[0168] In this embodiment, the cable 34 and the elastic element 31 are arranged side by side along the arrangement direction of the connecting end 12 and the free end 14. Compared with the scheme where the flexible circuit board 33 and the elastic element 31 are arranged side by side, the arrangement of the cable 34 and the elastic element 31 in this embodiment has a narrower width, thus having a better appearance. Compared with the scheme where the cable 34 and the elastic element 31 are stacked, the arrangement of the cable 34 and the elastic element 31 in this embodiment has a thinner thickness, thus having a better appearance. In addition, compared with the scheme of using the flexible circuit board 33 to realize the electrical connection between the motherboard 52 and the speaker 13, the scheme of using the cable 34 to realize the connection between the motherboard 52 and the speaker 13 in this embodiment has a lower cost. Furthermore, the cable 34 has a higher current carrying capacity and can support higher current. Furthermore, if a single second signal line 341 in the cable 34 is damaged, it can be replaced without the need for the entire cable to be scrapped. Furthermore, the routing of the cable 34 is easier to adjust, which allows for a more flexible design of the headphone 100.

[0169] Please see Figure 14 In some other embodiments, the connecting portion 30 further includes a cable 34, which is housed within the connecting tube 32. The two ends of the cable 34 are electrically connected to the speaker 13 and the motherboard 52, respectively, for electrically connecting the motherboard 52 and the speaker 13. The cable 34 and the elastic member 31 are stacked in a direction perpendicular to the plane of the connecting portion 30.

[0170] Optionally, the cable 34 includes one or more second signal lines 341. When the cable 34 includes multiple second signal lines 341, the multiple second signal lines 341 are stacked and insulated from each other. In some embodiments, the cable 34 further includes a sleeve 342, which is sleeved on the outer periphery of the multiple second signal lines 341. In other words, the multiple second signal lines 341 pass through the sleeve 342.

[0171] Understandably, the plane in which the connecting part 30 is located refers to the plane in which the central axis or center line of the connecting part 30 is located.

[0172] Compared to Figure 13 In this embodiment, the cable 34 and the elastic element 31 are stacked along a direction perpendicular to the plane where the connecting portion 30 is located. This allows the width of the connecting portion 30 to be smaller, making the presence of the connecting portion 30 less noticeable when the earphone 100 is worn, thus making the earphone 100 appear more compact and improving its appearance. Furthermore, compared to using a flexible circuit board 33 to achieve the electrical connection between the motherboard 52 and the speaker 13, this embodiment using a cable 34 to achieve the connection between the motherboard 52 and the speaker 13 has a lower cost. Moreover, the cable 34 has a higher current carrying capacity, supporting higher currents. Furthermore, a single damaged second signal line 341 in the cable 34 can be replaced without the entire cable being scrapped. Finally, the routing of the cable 34 is more adjustable, allowing for more flexible design of the earphone 100.

[0173] The following specific examples further describe the flexible element 31 of this application.

[0174] Example 1

[0175] The elastic element 31 in this embodiment includes 7 shape memory elements 311. The shape memory elements 311 are made of titanium-nickel alloy. Each shape memory element 311 has a diameter of 0.17 mm. The 7 shape memory elements 311 are spirally twisted together to form an elastic element 31 with a diameter of 0.5 mm. The elastic element 31 has an arc-shaped structure.

[0176] Comparative Example 1

[0177] The elastic element 31 in Comparative Example 1 is a single shape memory element 311 with a diameter of 0.5 mm. The shape memory element 311 is made of titanium-nickel alloy and has an arc-shaped structure.

[0178] The relationship between the outward expansion distance of the elastic element 31 at its two ends in Example 1 and Comparative Example 1 and the clamping force was measured using mechanical testing equipment. The test results are as follows: Figure 5 As shown, Figure 5In the figure, (a) is the relationship curve between the clamping force and the expansion distance of the elastic element in the embodiment, and (b) is the relationship curve between the clamping force and the expansion distance of the elastic element in the related art (i.e., Comparative Example 1). Figure 5 In the figure, the horizontal axis represents the distance the elastic element 31 expands in opposite directions at its two ends (i.e., the expansion distance), and the vertical axis represents the clamping force generated by the elastic element 31. As can be seen from the trend graphs of clamping force and expansion distance in Embodiment 1 and Comparative Example 1, the clamping force of the elastic element 31 in this embodiment increases more slowly with the increase of expansion distance. This makes the change in clamping force between the first component 10 and the second component 50 smaller as the distance between the first component 10 and the second component 50 increases when the elastic element 31 is applied to the earphone 100. This results in a more similar clamping force between the first component 10 and the second component 50 when people with thinner or smaller ears and people with thicker or larger ears wear the earphone 100. This better caters to people with different ear thicknesses and ear sizes, making the earphone 100 more adaptable and improving the product's competitiveness.

[0179] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form yet another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. An elastic member characterized by, The elastic element includes at least two shape memory elements, which are formed by twisting and / or weaving.

2. The elastic member of claim 1, wherein The elastic element is a curved structure with a first end and a second end.

3. The elastic member of claim 2, wherein, The elastic element has a natural state and an expanded state. When the elastic element is in the natural state, there is a first distance between the first end and the second end. When the elastic element is in the expanded state, there is a second distance between the first end and the second end. The first distance is less than the second distance; and / or; When the elastic element is in an expanded state, it has a tendency to return to its natural state.

4. The elastic member of claim 3, wherein When the elastic element is in an expanded state, the second distance and the elastic restoring force corresponding to the recovery trend are positively correlated.

5. The elastic member of claim 1, wherein The shape memory device has a circular cross-section, and the diameters of the circular cross-sections of the at least two shape memory devices are either different or the same. The diameter of the shape memory element ranges from 0.07 mm to 0.25 mm; And / or, The radial dimension of the elastic element ranges from 0.5 mm to 0.8 mm.

6. The elastic member of claim 1, wherein The elastic element includes 2 to 11 of the shape memory elements; or, The number of shape memory components is odd.

7. The elastic member of claim 1, wherein The twisting method of the elastic element includes at least one of concentric twisting, bundle twisting, compound twisting, fan-shaped twisting, unit twisting, untwisting twisting, and cross twisting. and / or; The weaving method of the elastic element includes at least one of the following: three-strand braid, four-strand braid, eight-strand braid, fishtail braid, circular braid, twisted rope, flat braid, hollow braid, spiral braid, twisted rope braid, and mesh interweaving.

8. The elastic member of any of claims 1-7, wherein, The shape memory device includes at least one of memory wire, memory metal wire, and memory metal filament; And / or, The shape memory element includes at least one of titanium-nickel alloy wire, copper-based alloy wire, and iron-based alloy wire.

9. An earphone, characterized by The earphone includes a first component, a connecting portion, and a second component, the connecting portion having a third end and a fourth end; the first component is connected to the third end, and the second component is connected to the fourth end; The connecting portion includes an elastic element as described in any one of claims 1-7, the third end of the connecting portion includes the first end of the elastic element, and the fourth end of the connecting portion includes the second end of the connecting portion.

10. The earphone of claim 9, wherein, The earphone has a first state and a second state. In the first state, there is a third distance between the first component and the second component. In the second state, there is a fourth distance between the first component and the second component. The third distance is smaller than the fourth distance. When the earphone is in the first state, the elastic element is in the expanded state; when the earphone is in the second state, the elastic element is in the expanded state. or, When the earphone is in the first state, the elastic element is in its natural state. When the earphone is in the second state, the elastic element is in an expanded state.

11. The earphone according to claim 9 or 10, characterized in that, The connecting portion further includes a flexible circuit board, which has a width direction and a thickness direction; The flexible circuit board and the elastic element are arranged along the width direction of the flexible circuit board; or, The flexible circuit board and the elastic element are arranged along the thickness direction of the flexible circuit board.

12. The earphone of claim 9 or 10, wherein, The connecting part also includes a connecting pipe and a cable. The connecting pipe has a flat structure, and the cable passes through the connecting pipe. The cable and the elastic element are arranged along the width direction of the connecting pipe.

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