Accessory and open earphone

Abstract

The utility model provides an accessory which is used for adjusting the distance between a first part and a second part of an open type earphone, the open type earphone comprises a first connecting part connected between the first part and the second part, and the accessory is connected to the first connecting part. The distance between the first part and the second part can be adjusted by controlling the accessory. The utility model also provides an open type earphone provided with the accessory.

Description

Technical Field

[0001] The utility model relates to the technical field of acoustics, in particular to a fitting and an open earphone provided with the fitting. Background Art

[0002] With the development of acoustic output technology, earphones have been widely used in people's daily lives. The earphones can be used in cooperation with electronic devices such as mobile phones and computers to enhance the user's auditory experience. The existing open earphones are a new type of earphone that is worn on the ear by means of clamping or hanging without entering the ear canal. The open earphones also have a decorative property because of their wearing method like earrings. And compared with in-ear earphones, the wearing comfort of open earphones has been significantly improved, so they are favored by users who are uncomfortable wearing in-ear / half-in-ear earphones. The open earphones generally include an acoustic part and a battery part that are 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 crucial impact on the wearing comfort and firmness of the ear, and the distance between the acoustic part and the battery part directly affects the clamping force of the wearing. However, the distance between the acoustic part and the battery part of the existing open earphones is set at the time of factory. Due to the large difference in the thickness of human ears, the open earphones can match fewer people. Summary of the Utility Model

[0003] The present application provides a fitting and an open earphone provided with the fitting.

[0004] A fitting provided by the present application is used to adjust the distance 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 fitting is connected to the first connecting part, and the distance between the first part and the second part can be adjusted by controlling the fitting.

[0005] In some embodiments, the fitting includes two positioning parts at its opposite ends. The two positioning parts are respectively connected to the opposite ends of the first connecting part, and the positioning parts are controlled to expand or contract relative to the first connecting part to adjust the distance between the first part and the second part.

[0006] In some embodiments, 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 the natural state.

[0007] In some embodiments, the surface of the accessory facing the first connecting portion is provided with a positioning groove, the positioning groove extends along the length direction of the accessory, and opposite ends of the positioning groove penetrate through the two positioning portions respectively, and the first connecting portion is received in the positioning groove.

[0008] In some embodiments, when the positioning portion matches the first connecting portion, the distance between the first portion and the second portion is the initial distance; when the positioning portion expands outward relative to the first connecting portion, the distance between the first portion and the second portion increases compared with the initial distance; when the positioning portion retracts inward relative to the first connecting portion, the distance between the first portion and the second portion decreases compared with the initial distance.

[0009] In some embodiments, the accessory is a curved body, the accessory further includes a second connecting portion connected between the two positioning portions, the two positioning portions and the second connecting portion are bent into the curved body, the first connecting portion is an elastic arc-shaped rod, and the curved body semi-wraps the arc-shaped rod.

[0010] In some embodiments, the curved body has an inner cavity, one side of the inner cavity penetrates through the side surface of the curved body facing the arc-shaped rod, opposite ends of the inner cavity penetrate through opposite end surfaces of the curved body respectively, and the outer surface of the arc-shaped rod facing away from the first portion is received in the inner cavity.

[0011] In some embodiments, the end surface of the positioning portion facing away from the second connecting portion is an arc surface.

[0012] In some embodiments, convex pieces extend from opposite side walls of the positioning portion towards the positioning groove, and the interval between the two convex pieces is smaller than the interval between opposite side walls of the second connecting portion.

[0013] In some embodiments, the inner surface of the positioning portion is provided with a first anti-slip structure.

[0014] In some embodiments, decorative grooves are respectively provided at edges of opposite side walls of the second connecting portion.

[0015] In some embodiments, an interference fit is provided between the positioning portion and the first connecting portion.

[0016] This application further provides an open earphone, the open earphone includes a first portion, a second portion, a first connecting portion connected between the first portion and the second portion, and an accessory, the accessory is connected to the first connecting portion, and the distance between the first portion and the second portion of the open earphone can be adjusted by controlling the accessory.

[0017] In some embodiments, the first connecting portion includes two positioning segments located at opposite ends thereof, two positioning portions of the fitting respectively semi-wrap around the two positioning segments, and an interference fit is provided between the positioning portion and the corresponding positioning segment.

[0018] In some embodiments, the outer surface of the positioning segment facing the positioning portion is provided with a second anti-slip structure.

[0019] In some embodiments, the first connecting portion further includes a connecting segment connected between the two positioning segments, and the two positioning segments and the connecting segment enclose an elastic arc-shaped rod.

[0020] In some embodiments, the positioning portion is an arc-shaped shell, and the two positioning segments are respectively received in the inner cavities of the two arc-shaped shells.

[0021] The distance between the first part and the second part of the open earphone of the present application can be adjusted by replacing the fitting so that the distance between the first part and the second part can be suitable for users with different auricle thicknesses. Therefore, the open earphone of the present application can be matched with earphones of different auricle thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic perspective view of an open earphone in the first embodiment of the present application;

[0024] Figure 2 is Figure 1 a schematic exploded perspective view of the open earphone in;

[0025] Figure 3 is Figure 2 a schematic perspective view of another angle of the open earphone in;

[0026] Figure 4 is Figure 1 a side view of the open earphone in;

[0027] Figure 5 is Figure 2 a side view of the open earphone in;

[0028] Figure 6 is Figure 3 a side view of the open earphone in;

[0029] Figure 7 isFigure 2 One cross-sectional view of the accessory in

[0030] Figure 8 is Figure 2 Another cross-sectional view of the accessory in

[0031] Figure 9 is Figure 1 One cross-sectional view of the open earphone in

[0032] Figure 10 is Figure 1 Another cross-sectional view of the open earphone in

[0033] Figure 11 is Figure 1 Side structure schematic diagram of the initial state of the open earphone in

[0034] Figure 12 is Figure 11 Cross-sectional view of the open earphone in

[0035] Figure 13 is Figure 11 One state schematic diagram of the open earphone in

[0036] Figure 14 is Figure 13 Cross-sectional view of the open earphone in

[0037] Figure 15 is Figure 11 Another state schematic diagram of the open earphone in

[0038] Figure 16 is Figure 15 Cross-sectional view of the open earphone in

[0039] Figure 17 Side structure schematic diagram of the accessory in the second embodiment of the present application;

[0040] Figure 18 Side structure schematic diagram of the accessory in the third embodiment of the present application;

[0041] Figure 19 Cross-sectional structure schematic diagram of the accessory in the fourth embodiment of the present application;

[0042] Figure 20 Three-dimensional structure schematic diagram of the accessory in the fifth embodiment of the present application;

[0043] Figure 21 Three-dimensional structure decomposition schematic diagram of the open earphone in the sixth embodiment of the present application.

[0044] Main reference numeral description:

[0045] 100, Open earphone; 20, Accessory; 22, Positioning part; 222, First anti-slip structure; 224, Protruding piece; 24, Second connecting part; 242, Decoration groove; 244, Decoration pattern; 26, Positioning groove; 40, First part; 60, Second part; 70, First connecting part; 72, Positioning section; 722, Second anti-slip structure; 74, Connecting section. Detailed implementation

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] In addition, the descriptions of the following embodiments refer to the attached drawings, which are used to illustrate the specific embodiments that the present application can be implemented. The directional terms mentioned in the present application, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are only references to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0048] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "set on..." should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0049] Please refer to Figures 1 to 6 , the open earphone 100 in the first embodiment of the present invention includes an earphone body and an accessory 20. The earphone body includes 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 suit users with different earlobe thicknesses.

[0050] The accessory 20 includes two positioning parts 22 located at opposite ends thereof and a second connection part 24 connected between the two positioning parts 22. The two positioning parts 22 of the accessory 20 are respectively connected to opposite ends of the outer circumference of the first connection part 70 of the open earphone 100. The positioning parts 22 and the first connection part 70 are mutually positioned. The positioning part 22 is adjusted to expand or retract relative to the first connection part 70 to adjust the distance between the first part 40 and the second part 60. It can be understood that the accessory 20 is a curved body, the two positioning parts 22 are respectively located at opposite ends of the curved body, and the second connection part 24 is located in the middle of the curved body; the first connection part 70 is an elastic arc rod, one end of the first connection part 70 is connected to the first part 40, and the other end of the first connection part 70 is connected to the second part 60; the curved body is half-wrapped on the outer circumference of the arc rod, the two positioning parts 22 are respectively located at opposite ends of the arc rod, and the second connection part 24 is directly opposite to the middle of the arc rod. When the open earphone 100 is worn on an earphone, the first portion 40 is accommodated in the concha cavity, and 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 this embodiment, the accessory 20 is a hard arc-shaped body. By adopting accessories 20 with different inner diameters, the distance between the first part 40 and the second part 60 can be changed by adjusting the curvature of the two positioning parts 22; specifically, when the inner diameter of the accessory 20 is equal to the outer diameter of the first connecting part 70, the two positioning parts 22 are respectively matched with the opposite ends of the arc rod, and the spacing between the first part 40 and the second part 60 is a preset spacing; when the inner diameter of the accessory 20 is larger than the outer diameter of the first connecting part 70, the two positioning parts 22 are respectively expanded relative to the arc rod, and the spacing between the first part 40 and the second part 60 is larger than the preset spacing, so as to be suitable for users with thick auricles; when the inner diameter of the accessory 20 is smaller than the outer diameter of the first connecting part 70, the two positioning parts 22 are respectively retracted relative to the arc rod, and the spacing between the first part 40 and the second part 60 is smaller than the preset spacing, so as to be suitable for users with thin auricles. It can be understood that the outward expansion of the positioning portion 22 relative to the arc rod means that the end of the positioning portion 22 away from the second connecting portion 24 is tilted outward toward the side away from the arc rod, and the inward expansion of the positioning portion 22 relative to the arc rod means that the end of the positioning portion 22 away from the second connecting portion 24 is recessed toward one side of the arc rod.

[0051] It can be understood that the "connection" in the description of the embodiments of the present utility model includes two cases of direct connection and indirect connection. For example, the connection between A and B includes the direct connection between A and B or the connection through a third element C or more other elements. The connection also includes two cases of integral connection and non-integral connection. The integral connection means that A and B are integrally formed and connected, and the non-integral connection means that A and B are non-integrally formed and connected. The first part 40 refers to the acoustic part of the open earphone 100 where the speaker is placed. When wearing the open earphone 100, the first part 40 is usually placed in the concha of the ear. The second part 60 refers to the battery part of the open earphone 100 where the battery is placed. When wearing the open earphone 100, the second part 60 is usually placed behind the ear. The first connecting part 70 is an elastic 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. The first connecting part 70 can be, but is not limited to, a C-shaped elastic rod, a U-shaped elastic rod, etc. The accessory 20 is an arc-shaped decorative part independent of the earphone body. The shape of the decorative part is similar to the shape of the first connecting part 70. The decorative part has a C-shaped groove or a U-shaped groove that semi-wraps the arc-shaped rod, etc.

[0052] Compared with the fixed distance between the acoustic part and the battery part of the open earphone in the prior art, the distance between the first part 40 and the second part 60 of the open earphone 100 in this application can be adjusted by replacing accessories 20 with different inner diameters to adjust the outward or inward expansion of the two positioning parts 22 relative to the arc-shaped rod. That is, when the positioning part 22 expands outward relative to the arc-shaped rod, the distance between the first part 40 and the second part 60 can be increased to suit users with thick auricles. If the positioning part 22 contracts inward relative to the arc-shaped rod, the distance between the first part 40 and the second part 60 can be decreased to suit users with thin auricles. Therefore, the open earphone 100 in this application can match users with different auricle thicknesses, has strong applicability, and improves the comfort of use.

[0053] Such as Figures 5 - 8As shown, the fitting 20 is an arc-shaped body, and the fitting 20 and the first connecting portion 70 can be mutually matched and positioned; specifically, a positioning groove 26 is provided on the surface of the fitting 20 facing the first connecting portion 70. The positioning groove 26 extends along the length direction of the fitting 20, and the opposite ends of the positioning groove 26 respectively penetrate through the two positioning portions 22. The side of the first connecting portion 70 facing away from the first portion 40 can be received in the positioning groove 26. The inner surface of the positioning groove 26 and the outer surface of the first connecting portion 70 are mutually buckled, and there is a frictional force between the inner surface of the positioning groove 26 and the outer surface of the first connecting portion 70. In this 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 the two end portions of the C-shaped elastic rod, the fitting 20 is a C-shaped groove strip, the outer shape of the fitting 20 is close to the outer shape of the first connecting portion 70, and the positioning groove 26 of the fitting 20 is a C-shaped groove. The C-shaped elastic rod is received in the C-shaped groove of the fitting 20, so that the fitting 20 semi-wraps the outer surface of the first connecting portion 70 facing away from the first portion 40 and the second portion 60, and the fitting 20 semi-wraps the first connecting portion 70 in an inverted buckling form.

[0054] Optionally, the end surface of the positioning portion 22 facing away from the second connecting portion 24 is an arc surface. When the open earphone 100 is worn on the user's ear, it can prevent the positioning portion 22 from scratching the user and has a better appearance.

[0055] Optionally, the fitting 20 can be made of soft or hard materials including but not limited to thermoplastic polyurethane (TPU for short), polypropylene (PP for short), acrylonitrile-butadiene-styrene copolymer (ABS for short), etc.

[0056] As Figures 7 - 10 shown, the first connecting portion 70 includes two positioning segments 72 located at its opposite ends and a connecting segment 74 connecting the two positioning segments 72. The two positioning segments 72 and the connecting segment 74 enclose an elastic arc-shaped rod. One end of one positioning segment 72 facing away from the connecting segment 74 is connected to the first portion 40, and one end of the other positioning segment 72 facing away from the connecting segment 74 is connected to the second portion 60. In this 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, etc. When the first connecting portion 70 is received in the positioning groove 26 of the fitting 20, the two positioning portions 22 of the fitting 20 respectively semi-wrap the two positioning segments 72 of the first connecting portion 70, and the second connecting portion 24 of the fitting 20 semi-wraps the connecting segment 74 of the first connecting portion 70. Each positioning portion 22 and the corresponding positioning segment 72 are mutually buckled and there is a frictional force between the two to position the bending shape of the first connecting portion 70 and realize the distance between the first portion 40 and the second portion 60.

[0057] Optionally, the positioning portion 22 is an arc-shaped shell, and the curvature of the positioning portion 22 at opposite ends of the accessory 20 is respectively set with multiple gradients. When the accessory 20 is installed on the first connecting portion 70, the two positioning segments are respectively accommodated in the inner cavities of the two arc-shaped shells. The accessory 20 drives the positioning segments 72 at opposite ends of the first connecting portion 70 through its own deformation, so that the distance between the first portion 40 and the second portion 60 increases or decreases to a specified size, thereby matching users with different ear thicknesses, making it more comfortable for users with thick ears to wear, and making it more secure for users with thin ears to wear.

[0058] like Figure 11 and Figure 12 As shown, the two positioning parts 22 and the second connecting part 24 are bent into an arc-shaped body, the inner diameter of the accessory 20 is equal to the outer diameter of the first connecting part 70, and the accessory 20 is half-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, the first connecting part 70 is in the original state, and the spacing L between the first part 40 and the second part 60 is the initial spacing, which refers to the spacing between the first part 40 and the second part 60 when the open earphone 100 leaves the factory, that is, the spacing 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 curvature of the two positioning parts 22 is completely matched with the two positioning segments 72 respectively, the spacing L between the first part 40 and the second part 60 is the initial spacing. The open earphone 100 in this state is suitable for wearing on an ear with an appropriate thickness of the auricle, and the first part 40 and the second part 60 are stably clamped on the user's auricle, so that the open earphone 100 can be firmly worn on the ear. One side of the inner cavity of the arc-shaped body passes through the side surface of the arc-shaped body facing the arc-shaped rod, and the opposite two ends of the inner cavity respectively pass through the opposite two end surfaces of the arc-shaped body, and the outer surface of the arc-shaped rod facing 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 facing 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 facing away from the first part 40 is accommodated in the inner cavity of the semi-arc shell.

[0059] The accessory 20 is an external accessory. The distance between the first portion 40 and the second portion 60 of the open-type earphone 100 after adjustment is different from the distance between the first portion 40 and the second portion 60 of the open-type earphone 100 in a natural state, as follows:

[0060] like Figure 13 and Figure 14As shown, the inner diameter of the fitting 20 is slightly smaller than the outer diameter of the first connecting portion 70. The arcs of the two positioning portions 22 are respectively recessed with respect 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 to the initial distance. Specifically, since the inner diameter of the fitting 20 is smaller than the outer diameter of the first connecting portion 70, when the fitting 20 is assembled onto the first connecting portion 70, the fitting 20 causes the first connecting portion 70 to elastically deform so that the two positioning segments 72 approach each other along the F1 direction respectively, and the two positioning portions 22 are respectively positioned with the two positioning segments 72, such 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 wearing on ears with thin auricles. The first portion 40 and the second portion 60 are stably clamped on the user's auricle, enabling the open earphone 100 to be firmly worn on the ear.

[0061] As Figures 15 - 16 As shown, the inner diameter of the fitting 20 is slightly larger than the outer diameter of the first connecting portion 70. The arcs of the two positioning portions 22 are respectively flared with respect 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 to the initial distance. Specifically, since the inner diameter of the fitting 20 is larger than the outer diameter of the first connecting portion 70, when the fitting 20 is assembled onto the first connecting portion 70, the fitting 20 causes the first connecting portion 70 to elastically deform to drive the two positioning segments 72 to move away from each other along the F2 direction respectively, and the two positioning portions 22 are respectively positioned with the two positioning segments 72, such 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 wearing on ears with thick auricles. The first portion 40 and the second portion 60 are stably clamped on the user's auricle, enabling the open earphone 100 to be firmly worn on the ear. It can be understood that both L and a are positive numbers, and L is greater than a.

[0062] The open earphone 100 of the present application is assembled onto the first connecting portion 70 by replacing the fitting 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 decreased, so that the open earphone 100 can match users with different ear thicknesses, improving the wearing comfort and firmness of the open earphone 100. Secondly, the open earphone 100 also solves the problem of decreased comfort caused by changing the size or curvature of the first portion 40 or the second portion 60, and also avoids the influence on the detection signal amount of the open earphone 100. At the same time, the fitting 20 can improve the wearing firmness for thin-ear users and in sports scenarios, and also reduces the probability of deterioration of sound quality and sound effect caused by the looseness or rotation of the open earphone 100 relative to the user's ear.

[0063] As Figure 17As shown in the figure, the structure of the fitting 20a in the second embodiment of the present application is similar to that of the fitting 20 in the first embodiment. The difference lies in that: on the opposite side wall edges of the second connecting portion 24a of the fitting 20a in the second embodiment, decorative grooves 242 are respectively provided, and the decorative grooves 242 extend along the corresponding side wall edges to improve the appearance quality of the fitting 20a; the decorative grooves 242 can be, but are not limited to, wavy grooves or sine-shaped grooves, etc.

[0064] As Figure 18 shown in the figure, the structure of the fitting 20b in the third embodiment of the present application is similar to that of the fitting 20 in the first embodiment. The difference lies in that: a decorative pattern 244 is provided on the outer surface of the fitting 20b in the third embodiment to improve the appearance quality of the fitting 20b.

[0065] As Figure 19 shown in the figure, the structure of the fitting 20c in the fourth embodiment of the present application is similar to that of the fitting 20 in the first embodiment. The difference lies in that: a first anti-slip structure 222 is provided on the inner surface of the positioning portion 22 of the fitting 20c to increase the friction between the positioning portion 22 and the connecting member. Specifically, the first anti-slip structures 222 are respectively provided on the inner surfaces of the two positioning portions 22 of the fitting 20c. The first anti-slip structure 222 can be, but is not limited to, anti-slip convex particles, anti-slip depressions or anti-slip coatings, etc.

[0066] As Figure 20 shown in the figure, the structure of the fitting 20d in the fifth embodiment of the present application is similar to that of the fitting 20 in the first embodiment. The difference lies in that: the interval between the opposite side walls of the positioning portion 22 of the fitting 20d in the fifth embodiment is smaller than the interval between the opposite side walls of the second connecting portion 24. Specifically, convex pieces 224 extending toward the positioning groove 26 are respectively provided on the opposite side walls of the positioning portion 22, so that the interval between the two convex pieces 224 is smaller than the interval between the opposite side walls of the second connecting portion 24; when the connecting member is accommodated in the positioning groove 26 of the fitting 20d, the convex pieces 224 are buckled on the connecting member, and there is friction between the convex pieces 224 and the connecting member.

[0067] As Figure 21As shown, 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. The difference is that: a second anti-slip structure 722 is provided on the outer surface of the positioning section 72 of the open earphone 100a in the sixth embodiment facing the positioning portion 22 to increase the friction between the positioning portion 22 and the first connecting portion 70. Specifically, the second anti-slip structure 722 is provided on the outer surfaces of the two positioning sections 72 of the open earphone 100a respectively. The second anti-slip structure 722 can be, but is not limited to, anti-slip convex grains, anti-slip depressions or anti-slip coatings, etc. In some embodiments, the first anti-slip structures are respectively provided on the inner surfaces of the two positioning portions 22 of the accessory 20, and the second anti-slip structures 722 are respectively provided on the outer surfaces of the two positioning sections 72 of the connecting member.

[0068] In other embodiments, a first anti-slip structure is provided on the outer surface of the first connecting portion 70 facing the accessory 20, and a second anti-slip structure is provided on the inner surface of the positioning groove of the accessory 20.

[0069] The above are the implementation manners of the embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the embodiments of the present utility model, several improvements and refinements can still be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. An accessory for adjusting the 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 in that, The accessory is connected to the first connecting portion, and the distance between the first portion and the second portion can be adjusted by controlling the accessory.

2. The accessory according to claim 1, wherein, The accessory includes two positioning portions at its opposite ends, and the two positioning portions are respectively connected to the opposite ends of the first connecting portion. By controlling the outward or inward movement of the positioning portions relative to the first connecting portion, the distance between the first portion and the second portion can be adjusted.

3. The accessory according to claim 1, characterized in that, The accessory is an external accessory, and the distance between the first portion and the second portion after adjustment is different from the distance between the first portion and the second portion of the open earphone in its natural state.

4. The accessory according to claim 2, characterized in that, The surface of the accessory facing the first connecting portion is provided with a positioning groove, which extends along the length direction of the accessory, and the opposite ends of the positioning groove respectively penetrate through the two positioning portions, and the first connecting portion is received in the positioning groove.

5. The fitting according to claim 2, wherein, When the positioning portion matches the first connecting portion, the distance between the first portion and the second portion is the initial distance; when the positioning portion expands outward relative to the first connecting portion, the distance between the first portion and the second portion increases compared with the initial distance; when the positioning portion contracts inward relative to the first connecting portion, the distance between the first portion and the second portion decreases compared with the initial distance.

6. The fitting according to claim 2, characterized in that, The accessory is a curved body, and the accessory further includes a second connecting portion connected between the two positioning portions. The two positioning portions and the second connecting portion are bent into the curved body. The first connecting portion is an elastic arc-shaped rod, and the curved body semi-wraps the arc-shaped rod.

7. The fitting according to claim 6, characterized in that, The curved body has an inner cavity, one side of the inner cavity penetrates through the side surface of the curved body facing the arc-shaped rod, and the opposite ends of the inner cavity respectively penetrate through the opposite end surfaces of the curved body. The outer surface of the arc-shaped rod facing away from the first portion is received in the inner cavity.

8. The accessory according to claim 6, characterized in that, The end surface of the positioning portion facing away from the second connecting portion is an arc surface.

9. The fitting according to claim 6, characterized in that, Convex pieces extend from the opposite side walls of the positioning portion towards the positioning groove, and the interval between the two convex pieces is smaller than the interval between the opposite side walls of the second connecting portion.

10. The fitting according to claim 2, characterized in that, The inner surface of the positioning portion is provided with a first anti-slip structure.

11. The fitting according to claim 6, characterized in that, Decorative grooves are respectively provided at the edges of the opposite side walls of the second connecting portion.

12. The accessory according to claim 2, characterized in that, There is an interference fit between the positioning portion and the first connecting portion.

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

14. The open earphone according to claim 13, characterized in that, The first connecting portion includes two positioning segments at its opposite ends. The two positioning portions of the accessory respectively semi-wrap the two positioning segments, and there is an interference fit between the positioning portion and the corresponding positioning segment.

15. The open earphone according to claim 14, wherein The outer surface of the positioning segment facing the positioning portion is provided with a second anti-slip structure.

16. The open earphone according to claim 14, characterized in that, The first connecting portion further includes a connecting segment connected between the two positioning segments. The two positioning segments and the connecting segment enclose an elastic arc-shaped rod.

17. The open earphone according to claim 14, characterized in that, The positioning portion is an arc-shaped shell, and the two positioning segments are respectively received in the inner cavities of the two arc-shaped shells.

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