Fitting and open-ear earphone

Abstract

Provided in the present application is a fitting, which is configured to adjust the spacing between a first portion and a second portion of an open-ear headphone. The open-ear headphone comprises a first connecting portion connected between the first portion and the second portion, wherein the fitting is connected to the first connecting portion, and the spacing between the first portion and the second portion can be adjusted by controlling the fitting. Further provided in the present invention is an open-ear earphone provided with the fitting.

Description

Accessories and open earphones

[0001] This application claims priority to two applications filed on September 30, 2024 with the China Patent Office, application numbers 2024113893056 and 2024224095318, both entitled "Accessories and open earphones", the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of acoustics, in particular to an accessory and an open earphone provided with the accessory. BACKGROUND

[0003] With the development of acoustic output technology, earphones have been widely used in people's daily life. The earphones can be used in cooperation with electronic devices such as mobile phones and computers to improve the user's hearing experience. The existing open earphone is a new earphone form that is not inserted into the ear canal and is worn on the ear by clamping or hanging. The open earphone also has a decorative attribute because of its wearing method like an ear ornament. Compared with the in-ear earphone, the open earphone has a significant improvement in wearing comfort, and thus is favored by users who are not suitable for wearing in-ear / semi-in-ear earphones. The open earphone generally includes an acoustic part and a battery part connected to each other. The acoustic part and the battery part are clamped on the user's ear. The clamping force between the acoustic part and the battery part has a key influence on the wearing comfort and firmness of the ear, and the spacing between the acoustic part and the battery part directly affects the clamping force of the wearing. However, the spacing between the acoustic part and the battery part of the existing open earphone is set at the factory. Due to the large difference in ear thickness, the open earphone can match a smaller population. SUMMARY

[0004] The present application provides an accessory for adjusting the spacing between a first part and a second part of an open earphone. The open earphone includes a first connecting part connected between the first part and the second part. The accessory is connected to the first connecting part. By controlling the accessory, the spacing between the first part and the second part can be adjusted.

[0005] The present application also provides an open earphone. The open earphone includes a first part, a second part, a first connecting part connected between the first part and the second part, and an accessory. The accessory is connected to the first connecting part. By controlling the accessory, the spacing between the first part and the second part of the open earphone can be adjusted.

[0006] The distance between the first part and the second part of the open earphone of the present application can be adjusted by replacing the accessory, so as to adapt to users with different ear auricle thicknesses. Therefore, the open earphone of the present application can match earphones with different ear auricle thicknesses. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0008] Fig. 1 is a perspective structural schematic view of an open earphone in a first embodiment of the present application;

[0009] Fig. 2 is a perspective structural exploded schematic view of the open earphone in Fig. 1;

[0010] Fig. 3 is a perspective structural schematic view of the open earphone in Fig. 2 from another perspective;

[0011] Fig. 4 is a side view of the open earphone in Fig. 1;

[0012] Fig. 5 is a side view of the open earphone in Fig. 2;

[0013] Fig. 6 is a side view of the open earphone in Fig. 3;

[0014] Fig. 7 is one sectional view of the accessory in Fig. 2;

[0015] Fig. 8 is another sectional view of the accessory in Fig. 2;

[0016] Fig. 9 is one sectional view of the open earphone in Fig. 1;

[0017] Fig. 10 is another sectional view of the open earphone in Fig. 1;

[0018] Fig. 11 is a side structural schematic view of an initial state of the open earphone in Fig. 1;

[0019] Fig. 12 is a sectional view of the open earphone in Fig. 11;

[0020] Fig. 13 is one state schematic view of the open earphone in Fig. 11;

[0021] Fig. 14 is a sectional view of the open earphone in Fig. 13;

[0022] Fig. 15 is another state schematic view of the open earphone in Fig. 11;

[0023] Fig. 16 is a sectional view of the open earphone in Fig. 15;

[0024] Fig. 17 is a side structural schematic view of the accessory in the second embodiment of the present application;

[0025] Fig. 18 is a side structural schematic view of the accessory in the third embodiment of the present application;

[0026] Fig. 19 is a cross-sectional structural schematic view of the accessory in the fourth embodiment of the present application;

[0027] Fig. 20 is a three-dimensional structural schematic view of the accessory in the fifth embodiment of the present application;

[0028] Fig. 21 is a three-dimensional structural exploded schematic view of the open earphone in the sixth embodiment of the present application.

[0029] Main reference signs: 100, open earphone; 20, accessory; 22, positioning portion; 222, first anti-skid structure; 224, protruding sheet; 24, second connecting portion; 242, decorative groove; 244, decorative pattern; 26, positioning groove; 40, first portion; 60, second portion; 70, first connecting portion; 72, positioning segment; 722, second anti-skid structure; 74, connecting segment. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0031] In addition, the descriptions of the following embodiments are with reference to the additional drawings to exemplify the specific embodiments that can be used to implement the present application. The directional terms mentioned in the present application, such as “up”, “down”, “front”, “back”, “left”, “right”, “inner”, “outer”, “side” and the like, are only the directions of the additional drawings, therefore, the directional terms used are for better and clearer illustration and understanding of the present application, and are not indicative or implied that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The term “natural state” refers to the state of a device or element without external force, such as tension or pressure.

[0032] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "arranged on" should be understood in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0033] In one aspect, the application provides a fitting for adjusting the distance between a first part and a second part of an open earphone, the open earphone comprising a first connecting part connected between the first part and the second part, the fitting being connected to the first connecting part, and the distance between the first part and the second part being adjustable by controlling the fitting.

[0034] Optionally, the fitting comprises two positioning parts at opposite ends thereof, the two positioning parts being connected to opposite ends of the first connecting part respectively, and the distance between the first part and the second part being adjusted by controlling the positioning parts to be extended or retracted relative to the first connecting part.

[0035] Optionally, the fitting is an external fitting, and the distance between the first part and the second part after adjustment is different from the distance between the first part and the second part of the open earphone in a natural state.

[0036] Optionally, a surface of the fitting facing the first connecting part is provided with a positioning groove extending along the length direction of the fitting, opposite ends of the positioning groove penetrating the two positioning parts respectively, and the first connecting part being accommodated in the positioning groove.

[0037] Optionally, when the positioning parts match the first connecting part, the distance between the first part and the second part is an initial distance; when the positioning parts are extended relative to the first connecting part, the distance between the first part and the second part is increased compared with the initial distance; and when the positioning parts are retracted relative to the first connecting part, the distance between the first part and the second part is decreased compared with the initial distance.

[0038] Optionally, the fitting is a curved body, the fitting further comprising a second connecting part connected between the two positioning parts, the two positioning parts and the second connecting part being curved into the curved body, the first connecting part being an elastic arc-shaped rod, and the curved body being semi-wrapped around the arc-shaped rod.

[0039] Optionally, the bending body has an inner cavity, one side of the inner cavity penetrates through the side of the bending body facing the side of the arc-shaped rod, and opposite ends of the inner cavity penetrate through opposite end faces of the bending body, and the outer surface of the arc-shaped rod away from the first part is accommodated in the inner cavity.

[0040] Optionally, the end face of the positioning part away from the second connecting part is an arc-shaped face.

[0041] Optionally, opposite side walls of the positioning part respectively extend protruding pieces to the positioning groove, and the interval between the two protruding pieces is smaller than the interval between the opposite side walls of the second connecting part.

[0042] Optionally, the inner surface of the positioning part is provided with a first anti-skid structure.

[0043] Optionally, edges of the opposite side walls of the second connecting part are respectively provided with decorative grooves.

[0044] Optionally, the positioning part and the first connecting part are in interference fit.

[0045] In another aspect, the application also provides an open earphone, which comprises a first part, a second part, a first connecting part connected between the first part and the second part, and a fitting part for adjusting the interval between the first part and the second part of the open earphone, the open earphone comprises a first connecting part connected between the first part and the second part, the fitting part is connected to the first connecting part, and the interval between the first part and the second part can be adjusted by controlling the fitting part; the fitting part is connected to the first connecting part to adjust the interval between the first part and the second part of the open earphone.

[0046] Optionally, the first connecting part comprises two positioning sections at opposite ends thereof, two positioning parts of the fitting part are respectively wrapped around the two positioning sections, and the positioning part and the corresponding positioning section are in interference fit.

[0047] Optionally, the positioning section opposite to the outer surface of the positioning part is provided with a second anti-skid structure.

[0048] Optionally, the first connecting part further comprises a connecting section connected between the two positioning sections, and the two positioning sections and the connecting section surround an elastic arc-shaped rod.

[0049] Optionally, the positioning part is an arc-shaped shell, and the two positioning sections are respectively accommodated in the inner cavities of the two arc-shaped shells.

[0050] Please refer to Figs. 1-6, the open earphone 100 in the first embodiment of the present application comprises an earphone body and an accessory 20, the earphone body comprises a first part 40, a second part 60, and a first connecting part 70 connected between the first part 40 and the second part 60; in this embodiment, the first part 40 is the acoustic part of the open earphone 100, and the second part 60 is the battery part of the open earphone 100. The accessory 20 is used to adjust the distance between the first part 40 and the second part 60 of the earphone body, specifically, the accessory 20 is connected to the first connecting part 70, and by controlling the accessory 20, the distance between the first part 40 and the second part 60 can be adjusted to adapt to users with different ear thicknesses.

[0051] The accessory 20 comprises two positioning portions 22 at opposite ends thereof and a second connecting portion 24 connected between the two positioning portions 22, the two positioning portions 22 of the accessory 20 are respectively connected to opposite ends of an outer circumferential surface of the first connecting portion 70 of the open earphone 100, the positioning portions 22 and the first connecting portion 70 are mutually positioned, the positioning portions 22 are adjusted to be outwardly extended or inwardly retracted relative to the first connecting portion 70 to adjust the distance between the first portion 40 and the second portion 60. Understandably, the accessory 20 is a curved body, the two positioning portions 22 are respectively located at opposite ends of the curved body, and the second connecting portion 24 is located at a middle portion of the curved body; the first connecting portion 70 is an elastic arc-shaped rod, one end of the first connecting portion 70 is connected to the first portion 40, and the opposite end of the first connecting portion 70 is connected to the second portion 60; the curved body is semi-wrapped on an outer circumferential surface of the arc-shaped rod, the two positioning portions 22 are respectively positioned at opposite ends of the arc-shaped rod, and the second connecting portion 24 is opposite to a middle portion of the arc-shaped rod. When the open earphone 100 is worn on the ear, the first portion 40 is accommodated in the concha cavity, the second portion 60 is located outside the auricle, that is, the auricle is located between the first portion 40 and the second portion 60, and the first portion 40 and the second portion 60 are clamped on the auricle. In the embodiment, the accessory 20 is a rigid arc-shaped body, by using accessories 20 with different inner diameters, the distance between the first portion 40 and the second portion 60 can be changed by adjusting the curvature of the two positioning portions 22; specifically, when the inner diameter of the accessory 20 is equal to the outer diameter of the first connecting portion 70, the two positioning portions 22 are respectively matched with opposite ends of the arc-shaped rod, the distance between the first portion 40 and the second portion 60 is a preset distance; when the inner diameter of the accessory 20 is greater than the outer diameter of the first connecting portion 70, the two positioning portions 22 are respectively outwardly extended relative to the arc-shaped rod, the distance between the first portion 40 and the second portion 60 is greater than the preset distance, to adapt to users with thick auricles; when the inner diameter of the accessory 20 is less than the outer diameter of the first connecting portion 70, the two positioning portions 22 are respectively inwardly retracted relative to the arc-shaped rod, the distance between the first portion 40 and the second portion 60 is less than the preset distance, to adapt to users with thin auricles. Understandably, the outward extension of the positioning portion 22 relative to the arc-shaped rod is that one end of the positioning portion 22 away from the second connecting portion 24 is outwardly tilted away from the arc-shaped rod, and the inward retraction of the positioning portion 22 relative to the arc-shaped rod is that one end of the positioning portion 22 away from the second connecting portion 24 is recessed toward the arc-shaped rod.

[0052] It can be understood that the "connection" in the description of the embodiments of the present application includes both direct connection and indirect connection, such as A and B connection including A and B direct connection or connection through a third element C or more other elements. The connection also includes both integrated connection and non-integrated connection, integrated connection refers to A and B are integrally formed and connected, and non-integrated connection refers to A and B are non-integrally formed and connected. The first part 40 refers to the acoustic part of the open earphone 100 in which the loudspeaker is placed, and the first part 40 is usually placed in the concha cavity of the ear when the open earphone 100 is worn. The second part 60 refers to the battery part of the open earphone 100 in which the battery is placed, and the second part 60 is usually placed behind the ear when the open earphone 100 is worn. The first connecting part 70 is a flexible arc-shaped rod connected between the second part 60 and the first part 40, specifically, one end of the arc-shaped rod is connected to the first part 40, and the opposite end of the arc-shaped rod is connected to the second part 60, and the first connecting part 70 can be but not limited to a C-shaped flexible rod or a U-shaped flexible rod, etc. The accessory 20 is an arc-shaped decorative piece independent of the earphone body, the shape of the decorative piece is similar to the shape of the first connecting part 70, and the decorative piece has a C-shaped slot or a U-shaped slot, etc. wrapped around the arc-shaped rod.

[0053] Compared with the fixed spacing between the acoustic part and the battery part of the open earphone in the prior art, the spacing between the first part 40 and the second part 60 of the open earphone 100 of the present application is adjusted by replacing the accessory 20 with different inner diameters, so as to adjust the outward or inward movement of the two positioning parts 22 relative to the arc-shaped rod, that is, the outward movement of the positioning parts 22 relative to the arc-shaped rod to increase the spacing between the first part 40 and the second part 60 to adapt to users with thick pinnae, and if the positioning parts 22 are inwardly moved relative to the arc-shaped rod, the spacing between the first part 40 and the second part 60 is reduced to adapt to users with thin pinnae. Therefore, the open earphone 100 of the present application can match users with different thickness of pinnae, has strong applicability, and improves the comfort of use.

[0054] As shown in FIGS. 5-8, the accessory 20 is an arc-shaped body, and the accessory 20 and the first connecting portion 70 can be positioned in each other. Specifically, a surface of the accessory 20 facing the first connecting portion 70 is provided with a positioning groove 26 extending along a length direction of the accessory 20, and opposite ends of the positioning groove 26 respectively pass through two positioning portions 22, and a side of the first connecting portion 70 away from the first portion 40 can be accommodated in the positioning groove 26, and an inner surface of the positioning groove 26 and an outer surface of the first connecting portion 70 are mutually engaged, and the inner surface of the positioning groove 26 and the outer surface of the first connecting portion 70 have a friction force therebetween. In the embodiment, the first connecting portion 70 is a C-shaped elastic rod, the first portion 40 and the second portion 60 are respectively connected to two end portions of the C-shaped elastic rod, the accessory 20 is a C-shaped groove strip, an outer shape of the accessory 20 is close to an outer shape of the first connecting portion 70, the positioning groove 26 of the accessory 20 is a C-shaped groove, and the C-shaped elastic rod is accommodated in the C-shaped groove of the accessory 20, so that the accessory 20 is semi-wrapped on an outer surface of the first connecting portion 70 away from the first portion 40 and the second portion 60, and the accessory 20 semi-wraps the first connecting portion 70 in a reverse buckling form.

[0055] Optionally, an end surface of the positioning portion 22 away from the second connecting portion 24 is an arc-shaped surface, and when the open earphone 100 is worn on an ear of a user, the positioning portion 22 can avoid scratching the user and has a better appearance.

[0056] Optionally, the accessory 20 can be made of soft or hard materials including but not limited to thermoplastic urethane (TPU), polypropylene (PP), acrylonitrile butadiene styrene (ABS), and the like.

[0057] As shown in FIGS. 7-10, the first connecting portion 70 includes two positioning segments 72 at opposite ends thereof and a connecting segment 74 connected between the two positioning segments 72, and the two positioning segments 72 and the connecting segment 74 enclose an elastic arc-shaped rod, wherein one end of each of the two positioning segments 72 away from the connecting segment 74 is connected to the first portion 40, and one end of each of the two positioning segments 72 away from the connecting segment 74 is connected to the second portion 60. In the embodiment, the two positioning segments 72 and the connecting segment 74 enclose a C-shaped elastic rod. In other embodiments, the two positioning segments 72 and the connecting segment 74 can enclose a U-shaped elastic rod, and the like. When the first connecting portion 70 is accommodated in the positioning groove 26 of the accessory 20, the two positioning portions 22 of the accessory 20 are respectively semi-wrapped on the two positioning segments 72 of the first connecting portion 70, and the second connecting portion 24 of the accessory 20 is semi-wrapped on the connecting segment 74 of the first connecting portion 70, and each of the positioning portions 22 and the corresponding positioning segment 72 is mutually engaged and has a friction force therebetween, so as to position a bending shape of the first connecting portion 70 and realize a spacing between the first portion 40 and the second portion 60.

[0058] Optionally, the positioning part 22 is an arc-shaped shell, and the arc of the positioning part 22 at each end of the accessory 20 is provided with a plurality of gradients. When the accessory 20 is installed to the first connecting part 70, the two positioning sections are respectively accommodated in the inner cavities of the two arc-shaped shells, and the accessory 20 drives the positioning sections 72 at the opposite ends of the first connecting part 70 through its own deformation, so that the distance between the first part 40 and the second part 60 is increased or decreased to a specified size, thereby matching users with different ear thicknesses, making the thick-ear users wear more comfortable, and making the thin-ear users wear more firmly.

[0059] As shown in FIGS. 11 and 12, the two positioning parts 22 and the second connecting part 24 are curved into arc-shaped bodies, the inner diameter of the accessory 20 is equal to the outer diameter of the first connecting part 70, and the accessory 20 is semi-wrapped on the outer surface of the first connecting part 70 (i.e., the arc-shaped rod) away from the first part 40; the accessory 20 is completely matched with the first connecting part 70, that is, the arc-shaped body is matched with the arc-shaped rod, and the first connecting part 70 is in the original state, and the distance L between the first part 40 and the second part 60 is the initial distance, which refers to the distance between the first part 40 and the second part 60 when the open earphone 100 is shipped, that is, the distance between the first part 40 and the second part 60 when the first connecting part 70 of the open earphone 100 is not elastically deformed. When the arcs of the two positioning parts 22 are completely matched with the two positioning sections 72, the distance L between the first part 40 and the second part 60 is the initial distance. The open earphone 100 in this state is suitable for being worn on the ear with appropriate thickness of the pinna, and the first part 40 and the second part 60 are stably clamped on the pinna of the user, so that the open earphone 100 can be firmly worn on the ear. One side of the inner cavity of the arc-shaped body penetrates through the side of the arc-shaped body facing the side of the arc-shaped rod, and the opposite ends of the inner cavity penetrate through the opposite end faces of the arc-shaped body, and the outer surface of the arc-shaped rod away from the first part 40 is accommodated in the inner cavity; it can be understood that the inner cavity of the arc-shaped body is the positioning groove 26, and the outer surface of the first connecting part 70 away from the first part 40 is accommodated in the positioning groove 26 of the accessory 20, that is, the outer surface of the arc-shaped rod away from the first part 40 is accommodated in the inner cavity of the semi-arc-shaped shell.

[0060] The accessory 20 is an external accessory, and the distance between the first part 40 and the second part 60 of the adjusted open earphone 100 is different from the distance between the first part 40 and the second part 60 of the open earphone 100 in the natural state, which is as follows:

[0061] As shown in FIG. 13 and FIG. 14, the inner diameter of the accessory 20 is slightly smaller than the outer diameter of the first connecting portion 70, the two positioning portions 22 are respectively inwardly recessed relative to the two positioning segments 72 of the first connecting portion 70, and the distance between the first portion 40 and the second portion 60 is reduced compared with the initial distance; specifically, since the inner diameter of the accessory 20 is smaller than the outer diameter of the first connecting portion 70, when the accessory 20 is assembled to the first connecting portion 70, the accessory 20 drives the first connecting portion 70 to elastically deform so that the two positioning segments 72 are respectively close to each other along the F1 direction, and the two positioning portions 22 are respectively positioned with the two positioning segments 72, so that the distance between the first portion 40 and the second portion 60 is reduced from L to L-a. The open earphone 100 in this state is suitable for being worn on an ear with thin auricles, and the first portion 40 and the second portion 60 are stably clamped on the auricles of the user, so that the open earphone 100 can be firmly worn on the ear.

[0062] As shown in FIG. 15 and FIG. 16, the inner diameter of the accessory 20 is slightly larger than the outer diameter of the first connecting portion 70, the two positioning portions 22 are respectively outwardly extended relative to the two positioning segments 72 of the first connecting portion 70, and the distance between the first portion 40 and the second portion 60 is increased compared with the initial distance; specifically, since the inner diameter of the accessory 20 is larger than the outer diameter of the first connecting portion 70, when the accessory 20 is assembled to the first connecting portion 70, the accessory 20 drives the first connecting portion 70 to elastically deform so that the two positioning segments 72 are respectively away from each other along the F2 direction, and the two positioning portions 22 are respectively positioned with the two positioning segments 72, so that the distance between the first portion 40 and the second portion 60 is increased from L to L+a. The open earphone 100 in this state is suitable for being worn on an ear with thick auricles, and the first portion 40 and the second portion 60 are stably clamped on the auricles of the user, so that the open earphone 100 can be firmly worn on the ear. It can be understood that L and a are both positive numbers, and L is greater than a.

[0063] The open earphone 100 of the present application can be assembled to the first connecting portion 70 by replacing the accessory 20 with different inner diameters to adjust the distance between the first portion 40 and the second portion 60, that is, the distance between the first portion 40 and the second portion 60 can be increased or reduced, so that the open earphone 100 can match users with different ear thicknesses, and the wearing comfort and firmness of the open earphone 100 are improved; secondly, the open earphone 100 also solves the comfort decline caused by changing the size or curved surface of the first portion 40 or the second portion 60, and avoids affecting the detection signal quantity of the open earphone 100. At the same time, the accessory 20 can improve the wearing firmness of thin-ear users and in sports scenarios, and also reduce the probability of sound quality degradation caused by loosening or rotation of the open earphone 100 relative to the user's ear.

[0064] As shown in FIG. 17, the structure of the accessory 20a in the second embodiment of the present application is similar to that of the accessory 20 in the first embodiment, except that the opposite two side wall edges of the second connecting portion 24a of the accessory 20a are respectively provided with a decorative groove 242 extending along the corresponding side wall edge to improve the appearance quality of the accessory 20a. The decorative groove 242 can be, but is not limited to, a wavy groove or a sinusoidal groove, etc.

[0065] As shown in FIG. 18, the structure of the accessory 20b in the third embodiment of the present application is similar to that of the accessory 20 in the first embodiment, except that the outer surface of the accessory 20b is provided with a decorative pattern 244 to improve the appearance quality of the accessory 20b.

[0066] As shown in FIG. 19, the structure of the accessory 20c in the fourth embodiment of the present application is similar to that of the accessory 20 in the first embodiment, except that the inner surface of the positioning portion 22 of the accessory 20c is provided with a first anti-skid structure 222 to increase the friction between the positioning portion 22 and the connecting member. Specifically, the inner surface of each of the two positioning portions 22 of the accessory 20c is provided with the first anti-skid structure 222. The first anti-skid structure 222 can be, but is not limited to, an anti-skid convex particle, an anti-skid concave, or an anti-skid coating, etc.

[0067] As shown in FIG. 20, the structure of the accessory 20d in the fifth embodiment of the present application is similar to that of the accessory 20 in the first embodiment, except that the spacing between the opposite two side walls of the positioning portion 22 of the accessory 20d is smaller than the spacing between the opposite two side walls of the second connecting portion 24. Specifically, the opposite two side walls of the positioning portion 22 respectively extend a protruding piece 224 towards the positioning groove 26, so that the spacing between the two protruding pieces 224 is smaller than the spacing between the opposite two side walls of the second connecting portion 24. When the connecting member is accommodated in the positioning groove 26 of the accessory 20d, the protruding pieces 224 are buckled on the connecting member, and the protruding pieces 224 have a friction with the connecting member.

[0068] As shown in FIG. 21, the structure of the open earphone 100a in the sixth embodiment of the present application is similar to that of the open earphone 100 in the first embodiment, except that the outer surface of each of the two positioning segments 72 of the open earphone 100a is provided with a second anti-skid structure 722 opposite to the outer surface of the positioning portion 22 to increase the friction between the positioning portion 22 and the first connecting portion 70. Specifically, the outer surface of each of the two positioning segments 72 of the open earphone 100a is provided with the second anti-skid structure 722. The second anti-skid structure 722 can be, but is not limited to, an anti-skid convex particle, an anti-skid concave, or an anti-skid coating, etc. In some embodiments, the inner surface of each of the two positioning portions 22 of the accessory 20 is provided with a first anti-skid structure, and the outer surface of each of the two positioning segments 72 of the connecting member is provided with a second anti-skid structure 722.

[0069] In other embodiments, the first connecting portion 70 is provided with a first anti-skid structure facing the outer surface of the fitting 20, and the inner surface of the positioning groove of the fitting 20 is provided with a second anti-skid structure.

[0070] The above is the implementation of the embodiments of the application. It should be pointed out that, for ordinary skilled in the art, without departing from the principles of the embodiments of the application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the application.

Claims

1. An accessory for adjusting a distance between a first part and a second part of an open earphone, the open earphone including a first connecting part connected between the first part and the second part, characterized by, The accessory is connected to the first connecting part, and the distance between the first part and the second part can be adjusted by controlling the accessory.

2. The fitting of claim 1, wherein The accessory includes two positioning parts at opposite ends thereof, and the two positioning parts are respectively connected to opposite ends of the first connecting part.

3. The fitting of claim 1, wherein The accessory is an external accessory, and the distance between the first part and the second part after adjustment is different from the distance between the first part and the second part in a natural state of the open earphone.

4. The fitting of claim 2, wherein The surface of the accessory facing the first connecting part is provided with a positioning groove extending along the length direction of the accessory, and opposite ends of the positioning groove pass through the two positioning parts respectively, and the first connecting part is accommodated in the positioning groove.

5. The fitting of claim 2, wherein When the positioning part matches the first connecting part, the distance between the first part and the second part is an initial distance; when the positioning part is extended outward relative to the first connecting part, the distance between the first part and the second part is increased compared with the initial distance; and when the positioning part is retracted inward relative to the first connecting part, the distance between the first part and the second part is decreased compared with the initial distance.

6. The fitting of claim 2, wherein The accessory is a curved body, and the accessory further includes a second connecting part connected between the two positioning parts, the two positioning parts and the second connecting part are curved into the curved body, the first connecting part is an elastic arc-shaped rod, and the curved body is semi-wrapped around the arc-shaped rod.

7. The fitting of claim 6, wherein The curved body has an inner cavity, one side of the inner cavity passes through the side of the curved body facing the arc-shaped rod, and opposite ends of the inner cavity pass through opposite end faces of the curved body respectively, and an outer surface of the arc-shaped rod away from the first part is accommodated in the inner cavity.

8. The fitting of claim 6, wherein, An end face of the positioning part away from the second connecting part is an arc-shaped face.

9. The fitting of claim 6, wherein, Opposite side walls of the positioning part respectively extend to the positioning groove to form protruding pieces, and the interval between the two protruding pieces is smaller than the interval between opposite side walls of the second connecting part.

10. The fitting of claim 2, wherein An inner surface of the positioning part is provided with a first anti-skid structure.

11. The fitting of claim 6, wherein, Opposite side wall edges of the second connecting part are respectively provided with decorative grooves.

12. The fitting of claim 2, wherein, The positioning part and the first connecting part are in interference fit.

13. An open earphone, characterized by The open earphone includes a first part, a second part, a first connecting part connected between the first part and the second part, and the accessory as claimed in any one of claims 1-12, the accessory is connected to the first connecting part to adjust the distance between the first part and the second part of the open earphone.

14. The open headphone of claim 13, wherein, The first connecting part includes two positioning sections at opposite ends thereof, and the two positioning parts of the accessory are respectively semi-wrapped around the two positioning sections, and the positioning part and the corresponding positioning section are in interference fit.

15. The open headphone of claim 14, wherein, An outer surface of the positioning section opposite to the positioning part is provided with a second anti-skid structure.

16. The open headphone of claim 14, wherein, The first connecting part further includes a connecting section connected between the two positioning sections, and the two positioning sections and the connecting section form an elastic arc-shaped rod.

17. The open ear headphone of claim 14, wherein, The positioning part is an arc-shaped shell, and the two positioning sections are respectively accommodated in inner cavities of the two arc-shaped shells. The positioning part is an arc-shaped shell, and the two positioning sections are respectively accommodated in inner cavities of the two arc-shaped shells.

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