earphones

Abstract

This application discloses an earphone comprising a main body and a connecting part, the main body comprising a sound-producing segment and an extension segment, one end of the extension segment being connected to the sound-producing segment, and the other end of the extension segment curving toward a curved part and being connected in a transitional manner, such that when worn, the extension segment and the upper edge of the ear portion form a first contact position, the connecting part being located between the rear of the ear portion and the head when worn, curving and extending from the upper side of the ear portion toward the lower side of the ear portion, such that when worn, the curved part and the rear of the ear portion form a second contact position, a first contact point is obtained by mechanical abstraction of the first and second contact positions, the second contact point is the point of mechanical application of the ear portion toward the first and second contact positions, and when worn, the straight-line distance between the projections of the first and second contact positions on a first reference plane parallel to the sagittal plane of the human body remains unchanged compared to the natural state. Compared to conventional technology, this application improves wearing comfort.

Description

Technical Field

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[0001] (Reference to Related Applications) This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on June 30, 2023, with the application number 202310794694X and the application title "Earphone", and all of its contents are incorporated herein by reference.

[0002] (Technical Field) This application relates to the technical field of consumer electronic products, particularly to earphones.

Background Art

[0003] With the development of society, the application range of earphones has become increasingly wide, and they are widely used when listening to music or enjoying entertainment in office environments and all places.

[0004] Many current open-type earphones adopt clamping by the elastic deformation of the earphones themselves to achieve wearing. This wearing method is likely to cause pain due to compressive deformation occurring in the ears, and the comfort of such a wearing method is not good.

Summary of the Invention

[0005] The main object of this application is to propose an earphone for enhancing the wearing comfort of earphones and improving the user experience.

[0006] To achieve the above object, this application provides an earphone, which includes a main body part, a connection part, and a bending part. The main body part includes a sound-emitting segment and an extending segment. One end of the extending segment is connected to the sound-emitting segment, and the other end of the extending segment curves towards the bending part and is transitionally connected. One end of the sound-emitting segment is connected to the extending segment, and the other end of the sound-emitting segment is a second free end. In the wearing state, the extending segment curves and extends from the front side of the ear through the upper edge of the ear towards the rear side of the ear, and forms a first contact position with the upper edge of the ear. The connecting part is used to connect the main body and the curved part. When worn, the connecting part is located between the back of the ear and the head, and extends from top to bottom, curving along the back of the ear. One end of the curved portion is connected to the connecting portion, and the other end is a first free end. When worn, the curved portion extends downward along the contour of the rear of the ear and forms at least one second contact point with the rear of the ear or the head. Mechanical abstraction is performed on the first and second contact positions to obtain the first and second contact points, and the first and second contact points are set as the points of mechanical application to the first and second contact positions of the ear portion, respectively. In the worn state, the straight-line distance between the projections of the first and second contact points on a first reference plane parallel to the sagittal plane of the human body remains unchanged compared to the natural state.

[0007] According to further technical proposals of this application, in the worn state, the straight-line distance between the projections of the first and second contact points on a second reference plane parallel to the horizontal plane of the human body remains unchanged compared to the natural state.

[0008] According to further technical proposals of this application, in the worn state, the straight-line distance between the projections of the first and second contact points on a third reference plane parallel to the coronal plane of the human body remains unchanged compared to the natural state.

[0009] According to further technical proposals of this application, in the fitted state, compared to the natural state, the minimum distance from the first free end to the first side surface near the ear portion of the connection remains unchanged, the minimum distance from the first free end to the second side surface near the ear portion of the extended segment remains unchanged, and the minimum distance from the first end connected to the curved portion of the first side surface to the second end connected to the connection portion of the second side surface remains unchanged.

[0010] According to further technical proposals of this application, the sound-producing segment and the front of the ear portion form a third contact position, a third contact point is obtained by performing a mechanical abstraction on the third contact position, and the third contact point is made the point of mechanical application of the ear portion to the third contact position.

[0011] According to further technical proposals of this application, in the mounted state, the straight-line distance between the projections on the first reference plane between any two of the first, second, and third contact points remains unchanged compared to the natural state.

[0012] According to further technical proposals of this application, in the worn state, the straight-line distance between the projections of any two of the first, second, and third contact points on a second reference plane parallel to the horizontal plane of the human body remains unchanged compared to the natural state.

[0013] According to further technical proposals of this application, in the worn state, compared to the natural state, the straight-line distance between the projections of any two of the first, second, and third contact points on a third reference plane parallel to the coronal plane of the human body remains unchanged.

[0014] According to further technical proposals of this application, in the fitted state, compared to the natural state, the minimum distance from the second free end to the first side surface near the ear portion of the connecting portion remains unchanged, the minimum distance from the second free end to the second side surface near the ear portion of the extending segment remains unchanged, and the minimum distance from the second free end to the first free end remains unchanged. The minimum distance from the first free end to the first side surface near the ear portion of the connection remains unchanged, and the minimum distance from the first free end to the second side surface near the ear portion of the extended segment remains unchanged.

[0015] According to further technical proposals of this application, the connecting portion is elastic, and both the main body and the curved portion are made of a rigid material.

[0016] According to further technical proposals of this application, an elastic metal strip is installed inside the connecting portion to connect the extended segment and the curved portion, and the diameter of the elastic metal strip is 0.8 mm or more.

[0017] According to further technical proposals of this application, the connecting portion is elastic, and in the installed state, the shape, proportion of the overlap, and position of the overlapping portion between the orthographic projection of the curved portion on a second reference plane parallel to the horizontal plane and the orthographic projection of the sound-producing segment on the second reference plane remain unchanged compared to the natural state.

[0018] According to further technical proposals of this application, a first support force F1 is formed on the earphone at the corresponding position between the ear portion and the first contact point, and the first support force F1 is outward and upward, and the angle it makes with the X direction is greater than 60° and less than 150°.

[0019] According to further technical proposals of this application, the corresponding contact point between the ear and the first contact point is located between the upper earlobe and the upper apex of Darwin's tubercle.

[0020] According to further technical proposals of this application, the length L of the sound-producing segment extends from the helix crus of the ear toward the antihelix.

[0021] According to further technical proposals of this application, the sound-producing segment and the inner wall of the concha of the ear form a third contact position.

[0022] According to further technical proposals of this application, the sound-producing segment includes, along the thickness direction, a fitting portion for fitting into the concha cavity and a housing portion located outside the concha cavity, the third contact position being located on the fitting portion, and the thickness h3 of the fitting portion being 2 to 10 mm.

[0023] According to further technical proposals of this application, the sound-producing segment is inclined away from the tragus of the ear from the end connected to the extending segment toward the second free end, so that a gap d exists between the bottom surface of the sound-producing segment near the tragus and the tragus, and the gap d is 0 or greater.

[0024] According to further technical proposals of this application, the first contact point, the second contact point, and the third contact point spatially form a triangle.

[0025] According to a further technical solution of the present application, the sounding segment has a boss protruding towards the ear hole of the ear, and the sound emitting hole is provided on the boss.

[0026] According to a further technical solution of the present application, the distance in the coronal axis direction between the first contact point and the third contact point is 3.5 to 13.5 mm.

[0027] According to a further technical solution of the present application, on the side towards the ear of the bending transition position between the extending segment and the sounding segment, there is a transition curve, and the range of the radius of curvature corresponding to the projection curve of the transition curve on the first reference plane is 1 to 10 mm.

[0028] According to a further technical solution of the present application, the cross-sectional area of the extending segment gradually decreases from the end close to the sounding segment towards the other end.

[0029] According to a further technical solution of the present application, the thickness h1 of the sounding segment is 8 to 20 mm.

[0030] According to a further technical solution of the present application, the ratio of the length of the extending segment in the sagittal axis direction to the sounding segment is 0.2 to 1.

[0031] According to a further technical solution of the present application, the length range of the sounding segment in the sagittal axis direction is 15 to 25 mm.

[0032] According to a further technical solution of the present application, the ratio of the length of the connecting part to the length of the bending part in the sagittal axis direction is less than 1.

[0033] According to a further technical solution of the present application, the length range of the bending part in the sagittal axis direction is 30 to 45 mm.

[0034] According to further technical proposals of this application, the projection of the first side surface of the connecting portion near the ear portion on a first reference plane forms a first curve, and the projection of the sound-producing segment on a first reference plane forms a second curve, and the first and second curves have a pitch in the vertical axis direction, the pitch gradually decreasing from the side near the curved portion to the side near the extending segment.

[0035] According to further technical proposals of this application, the cross-sectional area of ​​the connection portion gradually decreases first and then gradually increases from the end closer to the extended segment toward the end closer to the curved portion.

[0036] According to further technical proposals in this application, the maximum outer diameter of the connection portion is 15 mm or less.

[0037] According to further technical proposals of this application, the curved portion includes a transition segment whose cross-section gradually narrows toward the direction of the connection and a columnar contact segment, the second contact position being located in the contact segment.

[0038] According to further technical proposals of this application, the ratio of the thickness h2 to the width w2 of the contact segment is less than 1.

[0039] According to further technical proposals of this application, the thickness h2 of the contact segment is 5 to 15 mm.

[0040] According to further technical proposals of this application, the side surface of the curved portion is made up of multiple planes / curved surfaces smoothly and transitionally connected, so that the second contact position is a plane whose inclination angle conforms to the contour of the ear, or a curved surface whose curvature conforms to the contour of the ear.

[0041] According to further technical proposals of this application, the total mass M of the curved portion and the connecting portion, and the total mass m of the main body portion satisfy the condition that the difference between |Mm| is less than 5g.

[0042] This application describes how, with the above-described technology, the straight-line distance between the projections of the first and second contact points on a first reference plane parallel to the sagittal plane of the human body remains unchanged when worn, compared to the natural state. In other words, no elastic deformation occurs between the first and second contact points within the first reference plane, and no pinching occurs on the ear portion due to elastic deformation within the first reference plane. This prevents pinching on the ear portion when wearing the earphones, thereby improving the comfort of the user. [Brief explanation of the drawing]

[0043] To more clearly illustrate the embodiments of this application or the technical concepts in the prior art, the following is a brief introduction to the drawings that may be used in the descriptions of the embodiments or the prior art. Obviously, the drawings in the following descriptions are only a few embodiments of the application, and those skilled in the art can obtain other drawings based on the structures shown in those drawings without expending any creative effort. [Figure 1] This is a schematic diagram of the ear structure. [Figure 2] This is a schematic front view of one embodiment of the earphones of this application in a worn state. [Figure 3] This is a schematic top view of Figure 2. [Figure 4] Figure 2 is a schematic diagram of the left side. [Figure 5] Figure 2 is a schematic diagram of the right side. [Figure 6] This is a schematic front view of one embodiment of the earphone of this application in its natural state. [Figure 7] This is another schematic front view of the natural state of any one embodiment of the earphone of this application. [Figure 8] Figure 6 is a schematic rear view. [Figure 9] Figure 6 is a schematic diagram of the left side. [Figure 10] Figure 6 is a schematic diagram of the right side. [Figure 11] This is a schematic top view of Figure 6. [Figure 12] This is a schematic diagram of the bottom view of Figure 6. [Figure 13]This is a schematic diagram of one embodiment of the earphone of this application in its natural state from another angle. [Figure 14] This is a schematic diagram of the natural internal structure of any one embodiment of the earphone of this application.

[0044] The achievement of the objectives, functional features, and advantages of this application will be further described with reference to the drawings, along with the examples provided. [Modes for carrying out the invention]

[0045] To clarify the purpose, technical proposal, and advantages of this application, the technical proposal in the embodiments of this application is described clearly and completely below, linking them together. Of course, the described embodiments are only a part of the embodiments of this application, not all of them. All other embodiments derived from the embodiments of this application, without requiring any creative effort from a person skilled in the art, are all within the scope of protection of this application. To the extent that they do not contradict each other, the following embodiments and features can be combined with each other.

[0046] The following will first explain the definitions of the wearing state, the anterior, posterior, upper, and lower sides of the ear, the sagittal plane, coronal plane, horizontal plane, sagittal axis, coronal axis, horizontal axis, and the X, Y, and Z directions as per this specification.

[0047] The definitions of the anterior and posterior sides of the ear are as follows: In this application, "anterior side of the ear" is a concept in contrast to "posterior side of the ear," with the former being the side of the ear away from the head and the latter being the side of the ear toward the head; "upper edge of the ear" is the outer edge of the ear on the side where the helix points upward, and "lower edge of the ear" is the outer edge of the ear on the side where the helix points downward; both of these refer to the user's ear.

[0048] The definitions of the sagittal plane, coronal plane, horizontal plane, sagittal axis, coronal axis, and horizontal axis of the human body are as follows: As is well known, in fields such as medicine and anatomy, the three basic cross-sections of the human body—the sagittal plane, coronal plane, and horizontal plane—and the three basic axes—the sagittal axis, coronal axis, and vertical axis—can be defined. Here, the sagittal plane is a cross-section perpendicular to the ground, created along the anterior-posterior direction of the body, and it divides the human body into two parts, left and right. The coronal plane is a cross-section perpendicular to the ground, created along the lateral direction of the body, and it divides the human body into two parts, front and back. The horizontal plane is a cross-section parallel to the ground, created along the vertical direction of the body, and it divides the human body into two parts, upper and lower. Accordingly, the sagittal axis is the axis that runs perpendicular to the coronal plane along the anterior-posterior direction of the body, the coronal axis is the axis that runs perpendicular to the sagittal plane along the lateral direction of the body, and the vertical axis is the axis that runs perpendicular to the horizontal plane along the posterior-posterior direction of the body.

[0049] The definitions of the X, Y, and Z directions are as follows: As shown in Figure 2, for the sake of convenience, the X, Y, and Z directions are defined as follows: the X direction is parallel to the sagittal axis and points forward of the human body; the Y direction is parallel to the coronal axis and points to the right side of the human body (pointing outward along the plane of the paper in Figure 2); and the Z direction is parallel to the vertical axis and points upward of the human body.

[0050] The above definitions of directions are merely for convenience of description, and the X, Y, and Z directions may be defined arbitrarily as long as they conform to the principles of this proposed technology, and include, but are not limited to, definitions such as axial symmetry and angular symmetry of the above directions.

[0051] The definitions of "wearing state" and "natural state" are as follows: Based on ANSI: S3.36, S3.25 and IEC: 60318~7 standards, a simulator including the head and its (left and right) ears, such as GRASKB0065, can be manufactured. Based on this, the "wearing state" described in this application is the stable wearing state after the earphones have been securely attached to the ear parts of the simulator (shown in Figure 2), and the "natural state" is the state after the earphones have been removed from the ear parts and are not subjected to any external force. Of course, due to individual differences among users, the actual wearing state of the earphones may differ to some extent from the described wearing state.

[0052] The following method is used to compare the worn state with the natural state. In the worn state, the earphone and the ear portion form the corresponding first contact point A, second contact point B, and third contact point C. After marking these points, they are compared with the first contact point A, second contact point B, and third contact point C in the natural state after removal. For the sake of clarity, all circles corresponding to the first contact point A, second contact point B, and third contact point C in the drawings of this application are merely approximate representations of approximate positions and do not indicate actual positions.

[0053] This application provides an earphone, and with reference to Figures 1 to 14, this application provides one embodiment, which includes a main body 10, a connecting part 20, and a curved part 30. Here, the main body 10 includes a sound-producing segment 40 and an extension segment 50, one end of the extension segment 50 is connected to the sound-producing segment 40, the other end of the extension segment 50 curves toward the curved part 30 and is connected in a transitional manner, one end of the sound-producing segment 40 is connected to the extension segment 50, the other end of the sound-producing segment 40 is a second free end 90, and in the worn state, the extension segment 50 curves and extends from the front side of the ear portion toward the rear side of the ear portion via the upper edge of the ear portion, forming a first contact position 60 with the upper edge of the ear portion. The connecting portion 20 is used to connect the main body portion 10 and the curved portion 30. When worn, the connecting portion 20 is located between the back of the ear and the head, and extends in a curved manner from top to bottom along the back of the ear. One end of the curved portion 30 is connected to the connecting portion 20, and the other end is the first free end 100. When worn, the curved portion 30 extends downward along the contour of the back of the ear and forms at least one second contact point 80 with the back of the ear or the head. Mechanical abstraction is performed on the first contact position 60 and the second contact position 80 to obtain the first contact point A and the second contact point B, respectively, and the first contact point A and the second contact point B are set as the points of mechanical application to the first contact position 60 and the second contact position 80 of the ear. In the worn state, the straight-line distance between the projections of the first contact point A and the second contact point B on the first reference plane (ZX plane) parallel to the sagittal plane of the human body remains unchanged compared to the natural state.

[0054] In this embodiment, when worn, the straight-line distance between the first contact point A and the second contact point B on the first reference plane remains unchanged compared to the natural state. That is, no elastic deformation occurs between the first contact point A and the second contact point B within the first reference plane, and no pinching due to elastic deformation occurs on the ear portion within the first reference plane, which is noteworthy for enhancing wearing comfort.

[0055] Furthermore, in this state, the earphones do not require clamping by elastic deformation, and can maintain wearing stability solely by relying on the support force of the first contact position 60 and the second contact position 80 and the corresponding frictional force.

[0056] Furthermore, when worn, the straight-line distance between the projections of the first contact point A and the second contact point B on a second reference plane (YX plane) parallel to the horizontal plane of the human body remains unchanged compared to the natural state. When worn, the straight-line distance between the projections of the first contact point A and the second contact point B on the second reference plane remains unchanged compared to the natural state, meaning that no elastic deformation occurs within the second reference plane. Therefore, no pinching due to elastic deformation occurs on the ear portion within the second reference plane, improving wearing comfort.

[0057] Furthermore, when worn, the straight-line distance between the projections of the first contact point A and the second contact point B on a third reference plane (ZY plane) parallel to the coronal plane of the human body remains unchanged compared to the natural state. When worn, the straight-line distance between the projections of the first contact point A and the second contact point B on the third reference plane remains unchanged compared to the natural state, meaning that no elastic deformation occurs within the third reference plane. Therefore, no pinching due to elastic deformation occurs on the ear portion within the third reference plane, improving wearing comfort.

[0058] For example, in the worn state, compared to the natural state, the minimum distance from the first free end 100 to the first side surface 110 of the connecting portion 20 near the ear remains unchanged, the minimum distance from the first free end 100 to the second side surface 120 of the extending segment 50 near the ear remains unchanged, and the minimum distance from the first end 130 connected to the curved portion 30 of the first side surface 110 to the second end 140 connected to the connecting portion 20 of the second side surface 120 remains unchanged. By adopting this installation method, that is, in the worn state, compared to the natural state, no elastic deformation occurs between the curved segment, the connecting portion 20, and the extending segment 50, that is, the absolute position in space of the first contact point A relative to the second contact point B remains unchanged, no pinching due to elastic deformation occurs on the ear, and the comfort of wearing is improved.

[0059] Continuing to refer to Figures 2 to 14, this is another embodiment according to the present application. The difference between this embodiment and the above embodiment is that the sound-producing segment 40 and the front of the ear portion form a third contact position 70, a third contact point C is obtained by performing a mechanical abstraction on the third contact position 70, and the third contact point C is the point of mechanical application of the ear portion to the third contact position 70. This embodiment can further enhance the stability of earphone wear by adding a third contact point C between the sound-producing segment 40 and the front of the ear.

[0060] Furthermore, when worn, the straight-line distance between the projections on the first reference plane of any two of the first contact point A, the second contact point B, and the third contact point C remains unchanged compared to the natural state. With this installation method, the straight-line distance on the first reference plane between any two points remains unchanged, meaning there is no elastic deformation within the first reference plane, no pinching due to elastic deformation occurs on the ear, and the comfort of wearing is improved.

[0061] Furthermore, when worn, the straight-line distance between any two of the first contact point A, the second contact point B, and the third contact point C, and their projections on a second reference plane parallel to the horizontal plane of the human body, remains unchanged compared to the natural state. With this mounting method, the straight-line distance between any two points on the second reference plane remains unchanged, meaning there is no elastic deformation within the second reference plane, no pinching due to elastic deformation occurs on the ears, and the comfort of wearing the device is improved.

[0062] Furthermore, when worn, the straight-line distance between any two of the first contact point A, the second contact point B, and the third contact point C, and their projections on a third reference plane parallel to the coronal plane of the human body, remains unchanged compared to the natural state. With this mounting method, the straight-line distance between any two points on the third reference plane remains unchanged, meaning there is no elastic deformation within the third reference plane, no pinching due to elastic deformation occurs on the ear, and the comfort of wearing the device is improved.

[0063] For example, in the fitted state, compared to the natural state, the minimum distance from the second free end 90 to the first side surface 110 of the connecting portion 20 near the ear portion remains unchanged, the minimum distance from the second free end 90 to the second side surface 120 of the extending segment 50 near the ear portion remains unchanged, the minimum distance from the second free end 90 to the first free end 100 remains unchanged, the minimum distance from the first free end 100 to the first side surface 110 of the connecting portion 20 near the ear portion remains unchanged, and the minimum distance from the first free end 100 to the second side surface 120 of the extending segment 50 near the ear portion remains unchanged. With this installation method, the spatial position of the first free end 100 relative to the second free end 90 remains unchanged, and each part of the earphone, such as the sound-producing segment 40, the connecting part 20, the curved part 30, and the extending segment 50, does not undergo elastic deformation relative to each other. As a result, the earphone does not undergo elastic deformation, that is, the absolute position between any two of the first, second, and third contact points C remains unchanged, no pinching due to elastic deformation occurs in the ear, and the comfort of wearing the earphone is improved.

[0064] Furthermore, the first contact point A, the second contact point B, and the third contact point C spatially form a triangle. This mounting method provides a more stable and reliable fit for the earphones.

[0065] Furthermore, the distance in the coronal axis direction between the first contact point A and the third contact point C is 3.5 to 13.5 mm. Within this distance range, it is possible to accommodate the ear thickness of most users, prevent pressure on the ear in the thickness direction, and provide stable support. In one preferred embodiment, the distance may be set to 5.5 to 11.5 mm, more preferably 6.5 to 10.5 mm, and even more preferably 8.5 mm.

[0066] In any one of the above embodiments, the connecting portion 20 is further elastic, and both the main body portion 10 and the curved portion 30 are made of a rigid material. The connecting portion 20 is set to be elastic so that the pitch between the main body portion 10 and the curved portion 30 can be increased during the fitting process, making the fitting process easier for the user. However, after fitting is complete, the space between the main body portion 10 and the curved portion 30 returns to its natural state, so that no pinching occurs on the ear due to elastic deformation, and the comfort of wearing is maintained.

[0067] The fact that the main body 10 and the curved portion 30 are made of rigid material means that the main body skeleton of the main body 10 and the curved portion 30 is made of a relatively rigid material, thereby making the overall structure less prone to deformation. The exterior of the connecting portion 20, the main body 10 and the curved portion 30 may or may not be covered with a flexible material (e.g., polycarbonate, polyamide, acrylonitrile-butadiene-styrene, silica gel, etc.) as needed, and may be partially or completely covered with a flexible material as needed, thereby improving wearing comfort as needed.

[0068] The above-mentioned rigid materials are generally materials with relatively high rigidity that are resistant to deformation, and preferably materials with an elastic modulus greater than 2.0 GPa may be selected. Examples include polycarbonate (PC), polyamides (PA), acrylonitrile butadiene styrene (ABS), polystyrene (PS), high impact polystyrene (HIPS), polypropylene (PP), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyurethane (PU), polyethylene (PE), phenolic resin (PF), poly(ester sulfones) (PES), polyvinylidene chloride (PVDC), and polymethyl methacrylate (Polymethyl This includes, but is not limited to, mixtures formed from methacrylate (PMMA), polyether-ether-ketone (PEEK), or at least two of these, or mixtures formed from reinforcing agents such as glass fibers or carbon fibers.

[0069] In one preferred embodiment, the selected rigid material has a pressure greater than 2.32 GPa and a Poisson's ratio of approximately 0.390212, and is, for example, a PC material.

[0070] In any one of the above embodiments, as an example, an elastic metal strip 150 is installed inside the connecting portion 20 to connect the extended segment 50 and the curved portion 30, and the diameter of the elastic metal strip 150 is 0.8 mm or more. By selecting an elastic metal strip 150 within this diameter range, it is possible to maintain a certain degree of elasticity while simultaneously maintaining a certain degree of rigidity, making it difficult to break, difficult to bend, maintaining the shape when the earphone is worn, reducing pressure on the ear, reducing the number of bends, and protecting the internal flexible circuit board. In one preferred embodiment, the diameter is 1 mm or more, and in this embodiment, it may be even more preferably less than 2 mm in order to prevent the elastic metal strip 150 from becoming too thick and difficult to bend.

[0071] To better protect the circuit board and prevent damage to the circuit board when the connector 20 bends, the elastic metal strip 150 and the flexible circuit board within the connector 20 are installed in parallel and extend in the same direction.

[0072] In any one of the embodiments described above, as further shown in Figures 11-12, the connecting portion 20 is elastic, and in the worn state, the shape, proportion of the overlap, and position of the overlapping portion between the orthographic projection of the curved portion 30 on a second reference plane parallel to the horizontal plane and the orthographic projection of the sound-producing segment on a second reference plane remain unchanged compared to the natural state. In other words, in this application, the overlapping portion is not for generating elastic clamping, but rather to improve the stability of wearing by making the earphone shape more conformable to the shape of the ear. The elasticity of the connecting portion 20 allows for an expansion of the pitch between the main body portion 10 and the curved portion 30 during the wearing process, making the user's wearing process easier. After wearing is complete, the space between the main body portion 10 and the curved portion 30 returns to its natural state, and no clamping due to elastic deformation is applied to the ear, improving wearing comfort.

[0073] In any one of the above embodiments, as illustrated in Figures 6 to 8, the orthographic projections of the main body 10 and the connecting part 20 on the first reference plane do not overlap in the worn state and the natural state, and the positions and shapes of the corresponding orthographic projections of the main body 10 and the connecting part 20 on the first reference plane remain unchanged. With this installation method, the main body 10 and the connecting part 20 do not undergo elastic deformation within the first reference plane, and do not apply pinching to the ear portion due to elastic deformation, thereby improving wearing comfort.

[0074] In any one of the above embodiments, as illustrated in Figures 6 to 8, the orthographic projections of the main body 10 and the curved portion 30 on the first reference plane do not overlap in the worn state and the natural state, and the positions and shapes of the corresponding orthographic projections of the main body 10 and the curved portion 30 on the first reference plane remain unchanged. With this installation method, the main body 10 and the curved portion 30 do not undergo elastic deformation within the first reference plane, and no pinching due to elastic deformation is applied to the ear, thereby improving wearing comfort.

[0075] In any one of the above embodiments, a first support force F1 is further formed on the earphone at the corresponding position between the ear portion and the first contact point A, the first support force F1 is outward and upward, and the angle it makes with the X direction is greater than 60° and less than 150°. In any one of the above embodiments, gravity is overcome mainly by relying on the first support force F1, the first support force F1 reduces the pressure on the ear portion as much as possible in this direction, and improves wearing comfort. More preferably, as shown in Figure 2, the angle between the first support force F1 and the X direction is 90°.

[0076] In any one of the above embodiments, as further shown in Figure 2, the corresponding contact point between the ear and the first contact point 60 is located between the upper earlobe and the upper apex of Darwin's tubercle. Because the upper earlobe is relatively sensitive and prone to discomfort, the first contact point 60 does not directly contact the upper earlobe. However, if the contact point between the first contact point 60 and the earlobe extends beyond the upper apex of Darwin's tubercle, the fit becomes unstable and slippery. By keeping the contact point within this range, both comfort and stability of the fit can be achieved.

[0077] In any one of the above embodiments, as further shown in Figure 7, the length L of the sound-producing segment 40 extends from the helix crus toward the helix. The length L of the sound-producing segment 40 extends along this direction, making it less likely to be compressed or bumped against the structure of the ear during use, and improving wearing comfort.

[0078] In some embodiments, and as shown in Figures 5, 12, and 13, the sound-producing segment 40 and the inner wall of the concha of the ear form a third contact position 70, which is located within the concha, resulting in more stable fitting. Furthermore, the sound-producing segment 40 includes a fitting portion 240 for fitting into the concha and a housing portion 250 located outside the concha, along the thickness direction, with the third contact position 70 located on the fitting portion 240, and the thickness h3 of the fitting portion 240 being 2 to 10 mm. By dividing the sound-producing segment 40 into a fitting portion 240 and a housing portion 250, the fitting portion 240 can be improved as needed without affecting the placement of the internal components of the sound-producing segment 40, and the range of the thickness h3 of the fitting portion 240 can better fit the depth of the concha. Preferably, the thickness h3 of the fitting portion 240 is 3 to 9 mm, more preferably 4 to 8 mm. To further improve the stability of the fit, an inclined surface 230 is provided on the fitting portion 240 that conforms to the shape of the concha cavity.

[0079] In any one of the above embodiments, as further shown in Figure 5, the sound-producing segment 40 is inclined away from the tragus of the ear from the end connected to the extending segment 50 toward the second free end 90, creating a gap d between the bottom surface 40a of the sound-producing segment 40 near the tragus and the tragus, and the gap d is 0 or greater. This mounting method prevents pressure on the tragus by the sound-producing segment 40 when worn, and improves wearing comfort.

[0080] In any one of the above embodiments, as further shown in Figure 12, the sound-producing segment 40 has a boss 160 that protrudes toward the ear canal of the ear, and the sound-emitting hole 170 is provided on the boss 160. The boss 160 enhances sound quality and, at the same time, improves the stability of the fit by forming contact with the ear during movement.

[0081] If we connect Figure 7 and Figure 14 illustratively for any one of the above embodiments, the specific ranges of the sound-producing segment 40, the extension segment 50, the connecting portion 20, and the curved portion 30 are as follows: The starting point of the sound-producing segment 40 is the rightmost first endpoint CP1 of the main body 10, the ending point of the sound-producing segment 40 is the leftmost second endpoint CP2 of the sound-producing segment 40, the starting point of the extension segment 50 is the rightmost first endpoint CP1 of the main body 10, and the ending point of the extension segment 50 is the main body 10 The leftmost third endpoint CP3 is the end of the elastic metal strip 150 connected to the main body 10, the starting point of the connection portion 20 is the leftmost third endpoint CP3 of the end of the main body 10 connected to the elastic metal strip 150, the ending point of the connection portion 20 is the uppermost fourth endpoint CP4 of the end of the curved portion 30 connected to the elastic metal strip 150, the starting point of the curved portion 30 is the uppermost fourth endpoint CP4 of the end of the curved portion 30 connected to the elastic metal strip 150, and the ending point of the curved portion 30 is the lowermost fifth endpoint CP5 of the curved portion 30. All numerical ranges for each of the following parts are based on the range of the definition.

[0082] Furthermore, as shown in Figures 7 and 14, the extension segment 50 and the sound-producing segment 40 have a transition curve 180 on the ear side of the curved transition position, and the range of the radius of curvature corresponding to the projection curve in the first reference plane of the transition curve 180 is 1 to 10 mm. Within this radius of curvature range, it is possible to accommodate the ear of most users, prevent pressure on the ear, and maintain good wearing stability. Exemplarily, the starting point of the transition curve 180 is the first intersection point CP6 of the reverse extension line in the Z direction of the third endpoint CP3 and the side surface of the extension segment 50 near the ear, and the ending point of the transition curve 180 is the second intersection point CP7 of the reverse extension line in the X direction of the first endpoint CP1 and the side surface of the extension segment 50 near the ear. Preferably, the range of the radius of curvature is 2 to 8 mm, and more preferably, the range of the radius of curvature is 3 to 7 mm.

[0083] As illustrated in Figures 7 and 14, the extended segment 50 has a cross-sectional area that gradually decreases from the end closest to the sound-producing segment 40 to the other end. The shape of the extended segment 50 fits into the gap between the ear and the head, preventing pressure on the ear during the fitting process. Furthermore, the thickness h1 of the sound-producing segment 40 is 8 to 20 mm, preferably 9 to 18 mm, and more preferably 10 to 16 mm.

[0084] As illustrated in Figures 7 and 14, the ratio of the length of the extended segment 50 to the length of the sound-producing segment 40 in the sagittal axis direction is 0.2 to 1. By controlling the value within this range, the length of the extended segment 50 is controlled, preventing the bending position between the sound-producing segment 40 and the extended segment 50 during installation from being too far from the first contact position, which would affect the stability of installation. Preferably, the ratio of the length of the extended segment 50 to the length of the sound-producing segment 40 in the sagittal axis direction is 0.3 to 0.9, and more preferably, the ratio is 0.4 to 0.8. Furthermore, the length range of the sound-producing segment 40 in the sagittal axis direction is 15 to 25 mm, preferably 17 to 23 mm, and more preferably 18 to 22 mm.

[0085] As illustrated in Figures 7 and 14, the ratio of the lengths of the connecting portion 20 and the curved portion 30 in the sagittal axis direction is less than 1. This range of the length ratio can increase the length of the curved portion 30 and improve the stability of the fit by making greater contact with the user's ear. Preferably, the ratio of the lengths of the connecting portion 20 and the curved portion 30 in the sagittal axis direction is less than 0.9, and more preferably less than 0.8. Furthermore, the length range of the curved portion 30 in the sagittal axis direction is 30 to 45 mm, preferably 32 to 43 mm, and more preferably 33 to 40 mm.

[0086] As illustrated in Figures 7 and 14, the projection of the first side surface 110 of the connector 20 near the ear on the first reference plane forms a first curve 190, and the projection of the sound-producing segment 40 on the first reference plane forms a second curve 200. The first curve 190 and the second curve 200 have a pitch in the vertical axis direction, and the pitch gradually decreases from the side closer to the curved portion 30 towards the side closer to the extending segment 50. This mounting method is advantageous in that, when worn, the connector 20 is separated from the ear, maintaining a pitch between it and the ear, and preventing the connector 20 from directly pressing against the ear and causing discomfort. Specifically, the starting point of the first curve 190 is the first intersection CP6, the ending point of the first curve is the third intersection CP8 on the side of the extension of the fourth endpoint CP4 along the X direction, near the ear of the connecting part, the starting point of the second curve 200 is the second intersection CP7, and the ending point of the second curve 200 is the second endpoint CP2.

[0087] As illustrated in Figures 7 and 14, the cross-sectional area of ​​the connecting portion 20 gradually decreases first from the end closer to the extended segment 50 towards the end closer to the curved portion 30, and then gradually increases. The shape of the connecting portion 20 reduces its volume as much as possible, prevents pressure on the ear or head, and improves wearing comfort. Furthermore, the maximum outer diameter of the connecting portion 20 is 15 mm or less, preferably 12 mm or less, and more preferably 10 mm or less.

[0088] As illustrated in Figures 7 and 14, the curved portion 30 includes a transition segment 210 whose cross-section gradually narrows toward the direction of the connection portion 20, and a columnar contact segment 220, with the second contact position 80 located on the contact segment 220. This shape allows for minimizing the volume of the transition segment 210, preventing pinching due to elastic deformation in the ear portion, increasing the volume of the contact segment 220, and increasing the area of ​​the second contact position 80, thereby improving wearing comfort and stability.

[0089] Furthermore, as shown in Figures 7, 13, and 14, the ratio of the thickness h2 to the width w2 of the contact segment 220 is less than 1. Within this ratio range, making the contact segment 220 a flattened columnar shape allows for a better enlargement of the area of ​​the second contact position 80 and improved wearing comfort. Preferably, the ratio of the thickness h2 to the width w2 of the contact segment 220 is less than 0.9, and more preferably less than 0.8. Furthermore, the thickness h2 of the contact segment 220 is 5 to 15 mm, preferably 6 to 14 mm, and more preferably 8 to 13 mm.

[0090] As illustrated in Figures 6, 7, 13, and 14, the side surface of the curved portion 30 is formed by the smooth, transitional connection of multiple planes / curved surfaces, thereby the second contact position 80 becoming a plane with an inclination angle that conforms to the contour of the ear, or a curved surface with a curvature that conforms to the contour of the ear. By joining multiple planes / curved surfaces, the second contact position 80 for contacting the ear becomes a plane with an inclination angle that conforms to the shape of the ear, or a curved surface with a curvature that conforms to the shape of the ear, and the contact between the contact segment 220 and the user's ear changes from conventional point contact or line contact to surface contact, increasing the surface area in contact with the ear, reducing pressure on the ear, and improving user comfort.

[0091] As shown exemplarily in Figures 7 and 14, the total mass M of the curved portion 30 and the connecting portion 20, and the total mass m of the main body portion 10 satisfy the condition that the difference in |Mm| is less than 5g. This weight configuration ensures that the weight on both sides of the first contact point A is balanced as much as possible, preventing imbalance when the earphone is worn. Preferably, the difference in |Mm| is less than 4g, more preferably less than 3g, and more preferably 0g.

[0092] The above description is merely a preferred embodiment of the present application and does not limit the scope of the patent. Any equivalent structural transformations, or their direct or indirect application in other related technical fields, made using the contents of the specification and drawings of the present application are all included within the scope of the patent protection of the present application. [Explanation of symbols]

[0093] Main body 10, connecting part 20, curved part 30, sound-producing segment 40, extending segment 50, first contact position 60, third contact position 70, second contact position 80, second free end 90, first contact point A, second contact point B, third contact point C, first free end 100, first side surface 110, second side surface 120, first end 130, second end 140, elastic metal strip 150, boss 160, sound-emitting hole 170, transition curve 180, first curve 190, second curve 200, transition segment 210, contact segment 220, inclined surface 230, fitting part 240, housing part 250.

Claims

1. An earphone, comprising a main body, a connector, and a curved part, The main body includes a sound-producing segment and an extension segment, one end of the extension segment is connected to the sound-producing segment, the other end of the extension segment curves toward the curved portion and is connected in a transitional manner, one end of the sound-producing segment is connected to the extension segment, the other end of the sound-producing segment is a second free end, and in the worn state, the extension segment curves and extends from the front side of the ear portion through the upper edge of the ear portion toward the rear side of the ear portion, and forms a first contact position with the upper edge of the ear portion. The connecting portion is used to connect the main body portion and the curved portion, and in the worn state, the connecting portion is located between the rear side of the ear portion and the head, and extends from top to bottom in a curved manner along the rear side of the ear portion. The curved portion has one end connected to the connecting portion and the other end is a first free end, and when worn, the curved portion extends downward along the contour of the rear side of the ear portion and forms at least one second contact point with the rear side of the ear portion or the head. Mechanical abstraction is performed on the first and second contact positions to obtain the first and second contact points, and the first and second contact points are set as the points of mechanical application to the first and second contact positions of the ear portion, respectively. An earphone characterized in that, when worn, the straight-line distance between the projections of the first contact point and the second contact point on a first reference plane parallel to the sagittal plane of the human body remains unchanged compared to the natural state.

2. The earphone according to claim 1, characterized in that, when worn, the straight-line distance between the projections of the first contact point and the second contact point on a second reference plane parallel to the horizontal plane of the human body remains unchanged compared to the natural state.

3. The earphone according to claim 1, characterized in that, when worn, the straight-line distance between the projections of the first contact point and the second contact point on a third reference plane parallel to the coronal plane of the human body remains unchanged compared to the natural state.

4. The earphone according to any one of claims 1 to 3, characterized in that, when worn, compared to the natural state, the minimum distance from the first free end to the first side surface of the connection portion near the ear portion remains unchanged, the minimum distance from the first free end to the second side surface of the extending segment near the ear portion remains unchanged, and the minimum distance from the first end connected to the curved portion of the first side surface to the second end connected to the connection portion of the second side surface remains unchanged.

5. The earphone according to claim 1, characterized in that the sound-producing segment and the front side of the ear portion form a third contact position, a third contact point is obtained by performing a mechanical abstraction on the third contact position, and the third contact point is the point of mechanical application of the ear portion to the third contact position.

6. The earphone according to claim 5, characterized in that, when worn, the straight-line distance between the projections on the first reference plane between any two of the first contact point, the second contact point, and the third contact point remains unchanged compared to the natural state.

7. The earphone according to claim 5, characterized in that, when worn, the straight-line distance between the projections on a second reference plane parallel to the horizontal plane of the human body between any two of the first contact point, the second contact point, and the third contact point remains unchanged compared to the natural state.

8. The earphone according to claim 5, characterized in that, when worn, the straight-line distance between the projections on a third reference plane parallel to the coronal plane of the human body between any two of the first contact point, the second contact point, and the third contact point remains unchanged compared to the natural state.

9. In the fitted state, compared to the natural state, the minimum distance from the second free end to the first side surface of the connecting portion near the ear portion remains unchanged, the minimum distance from the second free end to the second side surface of the extending segment near the ear portion remains unchanged, and the minimum distance from the second free end to the first free end remains unchanged. The earphone according to any one of claims 6 to 8, characterized in that the minimum distance from the first free end to the first side surface of the connecting portion near the ear portion remains unchanged, and the minimum distance from the first free end to the second side surface of the extending segment near the ear portion remains unchanged.

10. The earphone according to claim 1, characterized in that the connecting portion is elastic, and both the main body portion and the curved portion are made of a hard material.

11. The earphone according to claim 10, wherein an elastic metal strip connecting the extended segment and the curved portion is installed inside the connecting portion, and the diameter of the elastic metal strip is 0.8 mm or more.

12. The earphone according to claim 1, characterized in that the connecting portion is elastic, and in the worn state, the shape, proportion of the overlap, and position of the overlapping portion between the orthographic projection of the curved portion on a second reference plane parallel to the horizontal plane and the orthographic projection of the sound-producing segment on the second reference plane remain unchanged compared to the natural state.

13. The earphone according to claim 1, characterized in that a first supporting force F1 is formed on the earphone at the corresponding position between the ear portion and the first contact point, and the first supporting force F1 is outward and upward, and the angle it makes with the X direction is greater than 60° and less than 150°.

14. The earphone according to claim 1, characterized in that the contact position between the ear portion and the first contact position is located between the upper earlobe and the upper apex of Darwin's tubercle.

15. The earphone according to claim 5, characterized in that the length L of the sound-producing segment extends from the helix crus of the ear portion in the direction of the antihelix.

16. The earphone according to claim 15, characterized in that the sound-producing segment and the inner wall of the concha of the ear form the third contact position.

17. The earphone according to claim 16, wherein the sound-producing segment includes a fitting portion 240 for fitting into the concha of the ear along the thickness direction and a housing portion 250 located outside the concha of the ear, the third contact position is located on the fitting portion 240, and the thickness h3 of the fitting portion 240 is 2 to 10 mm.

18. The earphone according to claim 15, characterized in that the sound-producing segment is inclined toward the second free end from the end connected to the extended segment toward the second free end toward the ear portion, so that a gap d exists between the bottom surface of the sound-producing segment near the tragus and the tragus, and the gap d is 0 or more.

19. The earphone according to claim 5, characterized in that the first contact point, the second contact point, and the third contact point spatially form a triangle.

20. The earphone according to claim 5, characterized in that the sound-producing segment has a boss that protrudes toward the ear canal of the ear portion, and the sound-emitting hole is provided on the boss.

21. The earphone according to claim 5, characterized in that the distance in the coronal axis direction between the first contact point and the third contact point is 3.5 to 13.5 mm.

22. The earphone according to claim 21, wherein the extended segment and the sound-producing segment have a transition curve on the side toward the ear portion of the curved transition position, and the range of the radius of curvature corresponding to the projection curve in the first reference plane of the transition curve is 1 to 10 mm.

23. The earphone according to any one of claims 1 to 22, characterized in that the extended segment has a cross-sectional area that gradually decreases from the end closest to the sound-producing segment toward the other end.

24. The earphone according to claim 23, characterized in that the thickness h1 of the sound-producing segment is 8 to 20 mm.

25. The earphone according to any one of claims 1 to 22, characterized in that the ratio of the length of the extended segment to the length of the sound-producing segment in the sagittal axis direction is 0.2 to 1.

26. The earphone according to claim 25, characterized in that the length range of the sound-producing segment in the sagittal axis direction is 15 to 25 mm.

27. The earphone according to any one of claims 1 to 22, characterized in that the ratio of the lengths of the connecting portion and the curved portion in the sagittal axis direction is less than 1.

28. The earphone according to claim 27, characterized in that the length range of the curved portion in the sagittal axis direction is 30 to 45 mm.

29. The earphone according to any one of claims 1 to 22, characterized in that the projection of the first side surface of the connecting portion near the ear portion onto the first reference plane forms a first curve, the projection of the sound-producing segment onto the first reference plane forms a second curve, the first curve and the second curve have a pitch in the vertical axis direction, and the pitch gradually decreases from the side near the curved portion towards the side near the extending segment.

30. The earphone according to any one of claims 1 to 22, characterized in that the cross-sectional area of ​​the connection portion gradually decreases first from the end near the extended segment toward the end near the curved portion, and then gradually increases.

31. The earphone according to claim 30, characterized in that the maximum outer diameter of the connection portion is 15 mm or less.

32. The earphone according to any one of claims 1 to 22, characterized in that the curved portion includes a transition segment whose cross-section gradually narrows toward the direction of the connection portion and a columnar contact segment, and the second contact position is located in the contact segment.

33. The earphone according to claim 32, characterized in that the ratio of the thickness h2 to the width w2 of the contact segment is less than 1.

34. The earphone according to claim 33, characterized in that the thickness h2 of the contact segment is 5 to 15 mm.

35. The earphone according to any one of claims 1 to 22, characterized in that the side surface of the curved portion is formed by a plurality of planes / curved surfaces smoothly transitionally connected, thereby the second contact position becoming a plane whose inclination angle conforms to the contour of the ear portion, or a curved surface whose curvature conforms to the contour of the ear portion.

36. The earphone according to any one of claims 1 to 22, characterized in that the total mass M of the curved portion and the connecting portion, and the total mass m of the main body portion satisfy the condition that the difference between |M - m| is less than 5g.

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