Drawing structure and headphone

Abstract

According to the drawing structure, a slide way is arranged in a head beam shell, a damping block containing hole is formed in the end of the head beam shell, a sliding arm is provided with a sliding section and a connecting section which are connected in sequence, and the connecting section is arranged in the slide way in a sliding mode; at least part of the drawing damping block is accommodated in the damping block accommodating hole and abuts against the side surface of the sliding section so as to provide damping when the sliding section slides along the slide way, so that the drawing structure of the headphone is simple to assemble, firm and reliable, and can provide relatively balanced damping in the length adjusting process.

Description

Technical Field

[0001] The present invention relates to the technical field of earphones, and in particular to a pull-out structure and a headset. Background Art

[0002] Headphones are a widely used audio playback device. According to the wearing method, they are mainly divided into head-mounted, ear-hook and earplug types. In order to make the headphones adapt to different head shapes, some headphones are designed with a pull-out structure to adjust the length of the headband. However, the pull-out structure of existing headphones has problems such as complex structure and poor adjustment feel. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a pull-out structure and a headset, which are helpful to solve or improve at least part of the above-mentioned problems existing in the prior art.

[0004] In the first aspect, an embodiment of the present invention provides a pull-out structure for a headset, the pull-out structure comprising a head beam main body, a sliding arm and a pull-out damping block; the head beam main body comprises a head beam shell and two head beam end covers, the head beam shell has a slideway, each of the head beam end covers is respectively arranged at one end corresponding to the head beam shell and is connected to the head beam shell through a head beam fastener, the end of the head beam shell has a damping block accommodating hole, the head beam end cover has a sliding arm through-hole, the slideway is connected to the sliding arm through-hole; the sliding arm has a sliding section and a connecting section connected in sequence, the connecting section is slidably arranged on the slideway and penetrated through the sliding arm through-hole, and the connecting section is configured to be connected to the ear shell of the headset; the pull-out damping block is at least partially accommodated in the damping block accommodating hole and abuts against the side surface of the sliding section to provide damping when the sliding section slides along the slideway.

[0005] Furthermore, the pulling structure also includes a spring wire, which is accommodated in the head beam shell, and the spring wire has a fixed part and a free end, the fixed part is fixedly connected to the head beam shell, and the free end is connected to the sliding section.

[0006] Furthermore, the pull-out damping block has a damping groove, the sliding section is arranged in the damping groove and contacts with the side wall of the damping groove, and the notch of the damping groove is opposite to the side wall of the damping block accommodating hole.

[0007] Furthermore, the damping block accommodating hole has an inclined wall hole section, and the inclined wall hole section gradually shrinks from an end close to the sliding arm through hole to an end away from the sliding arm through hole.

[0008] Furthermore, the head beam shell includes an upper shell and a lower shell connected to each other, the upper shell has a main body and an extension part, the main body is arranged on the upper side of the lower shell, the extension part is arranged at the end of the main body and extends inwardly, the extension part is connected to the end of the lower shell, the damping block accommodating hole is arranged in the extension part, and the head beam end cover is arranged outside the extension part.

[0009] Furthermore, the extension portion has a first head beam mounting hole and an end cover positioning groove, the first head beam mounting hole passes through the bottom of the end cover positioning groove, and the end of the lower shell has a second head beam mounting hole corresponding to the first head beam mounting hole; an end cover positioning block is convexly provided on the side of the head beam end cover opposite to the extension portion, the end cover positioning block has a third head beam mounting hole, the end cover positioning block is connected to the end cover positioning groove, and the head beam fastener is passed through the third head beam mounting hole, the first head beam mounting hole and the second head beam mounting hole to connect the head beam end cover, the upper shell and the lower shell.

[0010] Furthermore, the head beam shell has a first stop surface, the sliding section has a card platform, the first stop surface is arranged opposite to the card platform, and the first stop surface is configured to cooperate with the card platform to limit the maximum length of the sliding section exposed from the head beam body.

[0011] Furthermore, the sliding section also has a fixing groove, the slideway has an elastic protrusion, the fixing groove is arranged close to the clamping platform, and when the fixing groove is connected to the elastic protrusion, the clamping platform is away from the first stop surface.

[0012] Furthermore, the sliding section has a second stop surface, and the second stop surface is arranged opposite to the outer end surface of the head beam end cover. When the second stop surface abuts against the outer end surface of the head beam end cover, the elastic protrusion is connected to the fixing groove.

[0013] Furthermore, the bottom of the slideway has an avoidance groove, the extension direction of the avoidance groove is parallel to the sliding direction of the sliding arm, the card platform is arranged in the avoidance groove, and the first stop surface is a side wall of the avoidance groove.

[0014] Furthermore, the inner wall of the damping groove has a raised portion, and an extending direction of the raised portion intersects with a sliding direction of the sliding section.

[0015] In a second aspect, an embodiment of the present invention further provides a headset, comprising the pull-out structure as described in the first aspect and two ear shells, each ear shell is respectively arranged at one end of the pull-out structure and connected to the corresponding connecting section.

[0016] An embodiment of the present invention provides a pull-out structure and a headset. The pull-out structure is achieved by arranging a slideway in a head beam shell, and a damping block accommodating hole is provided at the end of the head beam shell. The sliding arm has a sliding section and a connecting section which are connected in sequence. The connecting section is slidably arranged on the slideway. The pull-out damping block is at least partially accommodated in the damping block accommodating hole and abuts against the side surface of the sliding section to provide damping when the sliding section slides along the slideway. Therefore, the pull-out structure of the headset is simple to assemble, firm and reliable, and can provide relatively balanced damping during the length adjustment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of a headset according to an embodiment of the present invention;

[0019] Figure 2 is an exploded schematic diagram of a headset according to an embodiment of the present invention;

[0020] Figure 3 is an exploded schematic diagram of a rotating structure of an embodiment of the present invention;

[0021] Figure 4 is a cross-sectional schematic diagram of a rotating structure according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the three-dimensional structure of a sliding arm according to an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a three-dimensional structure of a rotating bracket according to an embodiment of the present invention from one viewing angle;

[0024] Figure 7 is a schematic diagram of the three-dimensional structure of a rotating bracket according to an embodiment of the present invention from another perspective;

[0025] Figure 8 is a schematic diagram of the connection between a rotating bracket and a sliding arm according to an embodiment of the present invention;

[0026] Fig. 9 It is a cross-sectional schematic diagram of the connection between a rotating bracket, a sliding arm, a rotating damping block and an ear shell top cover according to an embodiment of the present invention;

[0027] Fig.10 is a schematic diagram of the three-dimensional structure of a rotation damping block according to an embodiment of the present invention;

[0028] Fig.11 is a schematic diagram of a rotating structure of an embodiment of the present invention after removing the top cover of the ear shell;

[0029] Fig.12 is an exploded schematic diagram of a pull-out structure according to an embodiment of the present invention;

[0030] Fig.13 is a partial schematic diagram of a lower housing of an embodiment of the present invention;

[0031] Fig.14 is a partial schematic diagram of an upper housing of an embodiment of the present invention;

[0032] Fig.15 is a schematic structural diagram of a head beam end cover according to an embodiment of the present invention;

[0033] Fig.16 It is a structural schematic diagram of a pull-out damping block according to an embodiment of the present invention;

[0034] Fig.17 It is a partial cross-sectional schematic diagram of a pull-out structure of an embodiment of the present invention when the sliding section is retracted into the head beam body;

[0035] Fig.18 It is a partial cross-sectional schematic diagram of a pull-out structure of an embodiment of the present invention when the sliding section extends out of the head beam main body to the maximum length.

[0036] Description of reference numerals:

[0037] 10-ear shell; 11-second mounting hole; 12-second mounting slot; 13-connecting column; 20-rotating bracket; 21-first mounting slot; 211-positioning slot section; 212-contraction slot section; 213-block slot section; 214-limiting protrusion; 22-first mounting hole; 23-second positioning structure; 30-sliding arm; 31-sliding section; 311-card table; 312-fixing groove; 313-second stop surface; 32-connecting section; 321-limiting slot; 3211-first limiting wall; 3212-second limiting wall; 3213-stop end surface; 322-damping shaft section; 323-stop shaft section; 324-transition shaft section; 325-limiting shaft section; 40-rotating damping block; 41-rotating damping hole; 42-adjusting slot; 43-fourth mounting hole; 44-first positioning structure; 50-head beam body; 51-head beam shell; 511-slideway; 5111-elastic convex point; 5112-avoidance groove; 512-damping block accommodating hole; 5121-oblique wall hole section; 513-upper shell; 5131-main body; 5132-extension part; 5133-first head beam mounting hole; 5134-end cover positioning groove; 514-lower shell; 5141-second head beam mounting hole; 5 15-first stop surface; 52-head beam end cover; 521-sliding arm through hole; 522-end cover positioning block; 523-third head beam mounting hole; 53-head beam fastener; 60-ear shell top cover; 61-ear shell fastener; 62-third mounting hole; 63-positioning groove; 70-pull-out damping block; 71-damping groove; 72-raised portion; 80-spring wire; 81-fixed portion; 82-free end. DETAILED DESCRIPTION

[0038] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0039] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0040] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] For ease of explanation, spatially relative terms such as "inside," "outside," "below," "beneath," "lower," "above," "upper," and the like are used herein to describe the relationship of one element or feature to another element or feature illustrated in the figures. It will be understood that the spatially relative terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein should be interpreted accordingly.

[0042] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0043] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0044] The embodiment of the present invention provides a headset and a rotating structure for the headset. Figure 1 and Figure 2 The headset of the embodiment of the present invention comprises a headband body 50 and two rotating structures respectively arranged at both ends of the headband body 50. The headband body 50 is used to hang on the head of the user when the headset is in use. The rotating structure comprises an ear shell 10, and the ear shell 10 is used to accommodate the speaker unit of the headset. By setting the rotating structure, the ear shell 10 can rotate relative to the headband body 50, so as to facilitate the storage of the headset. The rotating structure of the embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

[0045] Reference Figure 3 and Figure 4 In this embodiment, the rotating structure further includes a rotating bracket 20 and a sliding arm 30. Figure 3-Figure 5 and Figure 8The sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence, wherein the sliding section 31 is telescopically connected to the head beam body 50, so that the length of the headset can be adjusted to adapt to the heads of different users. The rotating bracket 20 is connected to the ear shell 10 and is circumferentially fixed relative to the ear shell 10. The connecting section 32 of the sliding arm 30 is exposed outside the head beam body 50 and is rotatably connected to the rotating bracket 20, so that the ear shell 10 and the rotating bracket 20 can rotate around the connecting section 32 to realize the rotation of the ear shell 10 relative to the head beam body 50. Optionally, the sliding arm 30 can have a hollow structure inside, which can realize the function of wiring and facilitate the cable connection of the speaker unit in the ear shell 10.

[0046] Reference Figure 6 and Figure 7 The rotating bracket 20 has a first rotation limiting structure, and the connecting section 32 of the sliding arm 30 has a second rotation limiting structure corresponding to the first rotation limiting structure. The first rotation limiting structure cooperates with the second rotation limiting structure to limit the rotation range of the rotating bracket 20 and the ear shell 10 relative to the sliding arm 30.

[0047] In some embodiments, Figure 5 As shown, the second rotation limiting structure is a limiting groove 321, which extends along the circumference of the connecting section 32, and has a first limiting wall 3211 and a second limiting wall 3212 which are arranged opposite to each other along the circumference of the connecting section 32. Figure 6-Figure 8 As shown, the first rotation limiting structure of the rotating bracket 20 is a limiting protrusion 214, which is arranged in the limiting groove 321 and can move between the first limiting wall 3211 and the second limiting wall 3212. By setting the relative position of the first limiting wall 3211 and the second limiting wall 3212, the movable range of the limiting protrusion 214 in the limiting groove 321 can be set, and then the rotation angle range of the ear shell 10 relative to the head beam body 50 can be set. By adopting this design, the embodiment of the present invention is convenient for setting the rotation angle range of the ear shell 10, and allows a larger rotation angle to be set while ensuring the connection strength, preventing excessive torsion from damaging the rotating structure.

[0048] Alternatively, if Figure 4 and Fig. 9 As shown, the limiting groove 321 has a stop end surface 3213 , which is arranged opposite to the top surface of the limiting protrusion 214 to limit the axial movement of the rotating bracket 20 along the connecting section 32 and prevent the rotating bracket 20 from escaping along the axial direction of the sliding arm 30 .

[0049] Reference Figure 4-Figure 9, the rotating bracket 20 has a first mounting hole 22, and the first mounting hole 22 is spaced apart from the first rotating limit structure. The ear shell 10 has a second mounting hole 11 corresponding to the position of the first mounting hole 22, and the rotating structure further includes an ear shell fastener 61, and the ear shell fastener 61 passes through the first mounting hole 22 and the second mounting hole 11 to connect the rotating bracket 20 and the ear shell 10. The ear shell fastener 61 can be a pin, a screw, a bolt or other connector that can connect the ear shell 10 to the rotating bracket 20. Preferably, the ear shell fastener 61 is a detachable fastener to facilitate maintenance of the rotating structure, for example, the ear shell fastener 61 can be a screw.

[0050] In some embodiments, reference Figure 3 , Figure 4 and Fig. 9 The rotating structure also includes a rotating damping block 40, which is used to contact the connecting section 32 of the sliding arm 30, so as to provide damping during the rotation of the sliding arm 30 relative to the rotating bracket 20, so that the user can stabilize the ear shell 10 at this position after rotating the ear shell 10 relative to the head beam body 50 to the desired angle, thereby achieving an angle positioning effect and preventing the ear shell 10 from rotating arbitrarily when not operated. The rotating damping block 40 can be made of any material that can be squeezed with the sliding arm 30 to provide damping, for example, wear-resistant silicone, wear-resistant rubber or other wear-resistant composite materials can be used. In this embodiment, the rotating damping block 40 can be made of polyoxymethylene resin (POM) material, which has the characteristics of high hardness, high rigidity, high wear resistance, good elasticity and good dimensional stability, and is suitable for being made into a rotating damping block 40 to provide damping by friction with the connecting section 32.

[0051] In some embodiments, the rotary damping block 40 is disposed at one end of the rotary bracket 20 and connected to the rotary bracket 20. The rotary damping block 40 and the rotary bracket 20 are relatively fixed at least in the circumferential direction. The sliding arm 30 rotates relative to the rotary bracket 20 and also rotates relative to the rotary damping block 40. The rotary damping block 40 rubs against the connecting section 32 to provide damping. The rotary damping block 40 may include one or more, for example, a block-shaped structure disposed outside the connecting section 32 and in contact with and extruded from the side surface of the connecting section 32. In one embodiment, referring to Fig.10 The rotary damping block 40 has a rotary damping hole 41, and the connecting section 32 is inserted into the rotary damping block 40 and has an interference fit with the rotary damping hole 41. When the connecting section 32 is inserted into the rotary damping hole 41, the outer surface of the connecting section 32 is in close contact with the inner wall of the rotary damping hole 41, so that a better damping effect can be achieved.

[0052] Alternatively, if Fig.10As shown, the rotary damping block 40 also has an adjustment groove 42, which is opened on the side wall of the rotary damping hole 41 and can penetrate the side wall of the rotary damping hole 41 along the radial direction of the rotary damping hole 41. Fig.10 The rotary damping block 40 can form a damping cylinder, which is a cylindrical structure. The rotary damping hole 41 is opened in the middle of the damping cylinder, and the damping cylinder surrounds the outside of the connecting section 32. The upper end of the adjustment groove 42 can extend to the end surface of the damping cylinder. The setting of the adjustment groove 42 can make the damping cylinder have a certain deformation space, which is convenient for the connecting section 32 to be installed in the rotary damping hole 41, and by designing the width and length of the adjustment groove 42, the contact tightness between the rotary damping hole 41 and the connecting section 32 can be adjusted, thereby realizing the setting of the damping force between the rotary damping hole 41 and the connecting section 32.

[0053] In some embodiments, reference Fig.11 The ear shell 10 has a second mounting groove 12 at one end thereof for connection with the head beam body 50, and the rotating bracket 20 and the rotating damping block 40 are fixed in the second mounting groove 12, thereby hiding and protecting the rotating bracket 20 and the rotating damping block 40. The contour shape of the second mounting groove 12 matches the rotating bracket 20 and the rotating damping block 40 to achieve the positioning of the rotating bracket 20 and the rotating damping block 40. Preferably, the second mounting groove 12 is a non-rotating shape, which can prevent the rotating bracket 20 and the rotating damping block 40 from rotating in the second mounting groove 12. Optionally, a plurality of anti-slip protrusions are formed on the side surfaces of the rotating bracket 20 and the rotating damping block 40, and the anti-slip protrusions can be squeezed against the side walls of the second mounting groove 12 to prevent the rotating bracket 20 or the rotating damping block 40 from shaking in the second mounting groove 12, thereby ensuring the user's experience.

[0054] Reference Figure 3 and Figure 4 The rotating structure further includes an ear shell top cover 60. The ear shell top cover 60 is connected to the ear shell 10, and the rotating bracket 20 is located at one side away from the bottom of the second mounting groove 12 and at the opening of the second mounting groove 12 to at least partially cover the opening of the second mounting groove 12, thereby shielding and protecting the rotating bracket 20 and other structures in the second mounting groove 12. The earphone top cover has a third mounting hole 62 corresponding to the position of the first mounting hole 22, and the ear shell fastener 61 also passes through the third mounting hole 62 to connect the ear shell top cover 60, the rotating bracket 20 and the ear shell 10.

[0055] Optionally, the rotation damping block 40 has a fourth mounting hole 43. Figure 4 and Fig.11As shown, a connecting column 13 is convexly provided at the bottom of the second mounting groove 12, and the second mounting hole 11 is provided on the connecting column 13. The connecting column 13 extends in the direction of the opening of the second mounting groove 12, and the sizes of the fourth mounting hole 43 and the first mounting hole 22 correspond to the size of the connecting column 13, so that the connecting column 13 passes through the fourth mounting hole 43 of the rotation damping block 40 and the first mounting hole 22 of the rotation bracket 20 and is arranged opposite to the ear shell top cover 60, thereby the connecting column 13 can play a positioning effect on the rotation damping block 40 and the rotation bracket 20. Further, the connecting column 13 can be two spaced apart, and each connecting column 13 is provided with a corresponding second mounting hole 11, thereby the connecting column 13 can achieve circumferential fixation of the rotation damping block 40 and the rotation bracket 20 after passing through the fourth mounting hole 43 of the rotation damping block 40 and the first mounting hole 22 of the rotation bracket 20.

[0056] Reference Figure 4 In one embodiment, the ear shell top cover 60 has a positioning groove 63 on the side opposite to the rotating bracket 20, the position and shape of the positioning groove 63 match the connecting column 13, and the third mounting hole 62 is opened at the bottom of the positioning groove 63. After the ear shell top cover 60 is installed on the ear shell 10, the end of the connecting column 13 is arranged in the positioning groove 63, thereby realizing the positioning between the ear shell 10 and the ear shell top cover 60. At the same time, since the connecting column 13 also passes through the fourth mounting hole 43 on the rotating damping block 40 and the first mounting hole 22 on the rotating bracket 20, after the ear shell top cover 60 and the connecting column 13 are connected by the ear shell fastener 61, the rotating damping block 40 and the rotating bracket 20 located between the ear shell top cover 60 and the bottom of the second mounting groove 12 can also be well fixed. Optionally, the ear shell top cover 60 has a countersunk hole on the side opposite to the rotating bracket 20, and the ear shell fastener 61 is a screw, and the head of the ear shell fastener 61 is arranged in the countersunk hole, thereby improving the aesthetics of the headset.

[0057] In some embodiments, reference Fig.10 and Figure 7 , the side of the rotary damping block 40 opposite to the rotary bracket 20 has a first positioning structure 44, and the side of the rotary bracket 20 opposite to the rotary damping block 40 has a second positioning structure 23 corresponding to the first positioning structure 44. The first positioning structure 44 cooperates with the second positioning structure 23 to achieve the positioning connection between the rotary damping block 40 and the rotary bracket 20, thereby ensuring the relative positions of the connecting section 32, the rotary damping block 40 and the rotary bracket 20. Optionally, one of the first positioning structure 44 and the second positioning structure 23 is a positioning groove, and the other is a positioning block, and the positioning block is inserted into the positioning groove, and positioning is achieved by plugging. For example, in one embodiment, referring to Fig.10 and Figure 7 The first positioning structure 44 includes a positioning groove, and the second positioning structure 23 includes a positioning block.

[0058] In some embodiments, reference Figure 4-Figure 9 The connecting section 32 has a damping shaft section 322, a stop shaft section 323, a transition shaft section 324 and a limiting shaft section 325 which are sequentially arranged along the extending direction of the sliding arm 30, wherein the damping shaft section 322 is located at the end of the sliding arm 30 and inserted into the rotation damping hole 41. The diameter of the stop shaft section 323 is larger than that of the damping shaft section 322 and the transition shaft section 324. The stop shaft section 323 is sandwiched between the rotation damping block 40 and the rotating bracket 20, which can prevent the rotating bracket 20 from shifting along the sliding arm 30 and prevent the ear shell 10 from shaking relative to the sliding arm 30. The second rotation limiting structure is a limiting groove 321 and is arranged on the limiting shaft section 325. The rotating bracket 20 is provided with a first mounting groove 21, and the first mounting groove 21 has a positioning groove section 211, a contraction groove section 212 and a stopper groove section 213 which are sequentially arranged along the extension direction of the sliding arm 30, and the stopper shaft section 323 is at least partially arranged in the positioning groove section 211, and the limiting protrusion 214 is convexly arranged in the stopper groove section 213. The distance between the two opposite side walls of the first mounting groove 21 is reduced at the contraction groove section 212 to form a step structure, and the transition shaft section 324 is arranged in the contraction groove section 212. Since the width of the contraction groove section 212 is small, the stopper shaft section 323 is blocked by the step structure formed between the contraction groove section 212 and the positioning groove section 211 to achieve axial fixation. The opening of the first mounting groove 21 is opened on the lateral side of the rotating bracket 20, and the sliding arm 30 can be placed in the first mounting groove 21 from the opening of the first mounting groove 21, which is convenient for assembly.

[0059] The rotating structure of the embodiment of the present invention is provided by connecting the rotating bracket 20 to the ear shell 10, setting a first rotating limit structure on the rotating bracket 20, and setting a second rotating limit structure on the sliding arm 30 connected to the head beam body 50, and the second rotating limit structure cooperates with the first rotating limit structure to limit the rotation range of the ear shell 10 relative to the sliding arm 30. Therefore, by setting the rotating limit structure on the sliding arm 30 of the headset, the structure is simple, easy to assemble and has good strength. At the same time, this setting method allows the ear shell 10 to have a larger rotation range. In addition, the embodiment of the present invention sets a rotating damping block 40 at one end of the rotating bracket 20 to contact the connecting section 32 to provide damping during the rotation of the sliding arm 30 relative to the rotating bracket 20, thereby obtaining a good adjustment feel and angle positioning effect.

[0060] In some application scenarios, the length of the headset can be adjusted to meet the needs of users with different head shapes. Optionally, the sliding section 31 of the sliding arm 30 is telescopically connected to the head beam body 50, and the length of the headset can be conveniently adjusted by adjusting the length of the sliding arm 30 exposed from the head beam body 50. In order to achieve the adjustment of the length of the headset, an embodiment of the present invention further provides a pull-out structure of the headset, which will be described in detail below in conjunction with the accompanying drawings.

[0061] Reference Figure 1-Figure 2 as well as Figure 12-Figure 18 The pull-out structure includes a head beam body 50, a sliding arm 30 and a pull-out damping block 70. The sliding arm 30 may be the sliding arm 30 described in the above rotating structure embodiment. The sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence, wherein the connecting section 32 is connected to the ear shell 10, and the sliding section 31 is slidably connected to the head beam body 50.

[0062] The head beam body 50 includes a head beam shell 51 and two head beam end caps 52, each of which is respectively arranged at one end corresponding to the head beam shell 51 and connected to the head beam shell 51 through a head beam fastener 53. The head beam fastener 53 can be a screw, a bolt, a pin or other fasteners suitable for connecting the head beam shell 51 and the head beam end cap 52. Optionally, the head beam fastener 53 is a detachable fastener, which can be easily maintained.

[0063] The head beam housing 51 has a slideway 511 in which the sliding section 31 of the sliding arm 30 is slidably disposed. The head beam end cover 52 has a sliding arm through hole 521, the slideway 511 is communicated with the sliding arm through hole 521, and the sliding arm 30 is disposed in the sliding arm through hole 521.

[0064] The pull-out damping block 70 is disposed in the head beam body 50 and abuts against the side surface of the sliding section 31 to provide damping when the sliding section 31 slides along the slideway 511. When the user pulls the sliding arm 30 out to a certain length for wearing, the damping provided by the pull-out damping block 70 can stabilize the sliding arm 30 at this position to achieve a length positioning effect. Similar to the rotation damping block 40, the pull-out damping block 70 can be made of any material that can be squeezed with the sliding arm 30 to provide damping, for example, wear-resistant silicone, wear-resistant rubber or other wear-resistant composite materials can be used.

[0065] Optionally, refer to Fig.12The pull-out structure also includes a spring wire 80, which is accommodated in the head beam shell 51. The spring wire 80 has a fixed portion 81 and a free end 82, wherein the fixed portion 81 is fixedly connected to the head beam shell 51, and the free end 82 is connected to the sliding section 31. The spring wire 80 is a retractable cable formed by curling or folding. The elastic force of the spring wire 80 can assist the sliding arm 30 to retract into the head beam body 50 to achieve reset, and provide a certain feedback force when the user pulls out the sliding arm 30, which has a better operating feel. The spring wire 80 can be one, wherein the fixed portion 81 is arranged in the middle of the spring wire 80, and the fixed portion 81 can be fixed in the middle position of the head beam shell 51; the two ends of the spring wire 80 are free ends 82, and the free ends 82 are connected to the sliding arm 30. When the sliding section 31 is pulled out of the head beam body 50, the spring wire 80 is stretched. Optionally, a main board is provided in each ear shell 10 for controlling the operation of the speaker unit in the ear shell 10 , and the free end 82 of the spring wire 80 is passed through the hollow structure inside the sliding arm 30 , so that the spring wire 80 passes through the ear shell 10 and is electrically connected to the main board provided in the ear shell 10 .

[0066] Reference Fig.17 and Fig.18 The end of the head beam housing 51 has a damping block accommodating hole 512, and the pull-out damping block 70 is at least partially accommodated in the damping block accommodating hole 512. The size of the damping block accommodating hole 512 matches the pull-out damping block 70 to achieve positioning of the pull-out damping block 70. Optionally, the head beam end cover 52 at least partially covers the damping block accommodating hole 512 to achieve protection of the pull-out damping block 70.

[0067] Optionally, refer to Fig.16 The pull-out damping block 70 has a damping groove 71, the sliding section 31 is disposed in the damping groove 71 and contacts the side wall of the damping groove 71, and the notch of the damping groove 71 is opposite to the side wall of the damping block receiving hole 512. The sliding section 31 can be conveniently inserted into the damping groove 71 from the notch of the damping groove 71, and then the pull-out damping block 70 can be inserted into the damping block receiving hole 512, thereby improving the convenience of assembly.

[0068] In one embodiment, further, referring to Fig.14 , Figure 17-Figure 18The damping block accommodating hole 512 has an inclined wall hole section 5121, and the inclined wall hole section 5121 gradually shrinks from one end close to the sliding arm through hole 521 to the end away from the sliding arm through hole 521, forming a funnel-like structure. When the pull-out damping block 70 is set in the damping block accommodating hole 512, the outer wall of the pull-out damping block 70 and the inclined wall hole section 5121 squeeze each other. Under the action of the elastic force of the spring wire 80, the sliding arm 30 has a tendency to shrink into the head beam body 50. The friction between the sliding arm 30 and the pull-out damping block 70 drives the pull-out damping block 70 to move in the direction away from the sliding arm through hole 521. Since the damping groove 71 is an open structure, the notch of the damping groove 71 is opposite to the side wall of the damping block accommodating hole 512, so that the inclined wall hole section 5121 squeezes the pull-out damping block 70, ensuring that the side wall of the damping groove 71 can be tightly attached to the sliding section 31 to provide damping. Furthermore, when the sliding arm 30 is pulled out to a certain length by the user, the damping of the sliding section 31 by the pull-out damping block 70 can achieve a length positioning effect of the headset, thereby preventing the sliding arm 30 from retracting arbitrarily during operation.

[0069] In some embodiments, reference Fig.12 The head beam shell 51 includes an upper shell 513 and a lower shell 514 connected to each other, and the upper shell 513 and the lower shell 514 enclose an internal cavity to accommodate the spring wire 80 and at least a portion of the sliding section 31. The head beam shell 51 forms a structure similar to a "U" shape. The upper shell 513 has a main body 5131 and an extension 5132, wherein the main body 5131 is arranged on the upper side of the lower shell 514, and the main body 5131 and the lower shell 514 can be fastened and fixed to each other. The extension 5132 is arranged at the end of the main body 5131 and extends inwardly (that is, the inner side of the "U"-shaped structure), and the extension 5132 is connected to the end of the lower shell 514. The damping block accommodating hole 512 can be arranged in the extension 5132, and the head beam end cover 52 is arranged outside the extension 5132 to achieve protection for the pull-out damping block 70.

[0070] Alternatively, if Fig.14 As shown, the extension portion 5132 has a first head beam mounting hole 5133, the first head beam mounting hole 5133 passes through the bottom of the end cover positioning groove 5134, and the end of the lower shell 514 has a second head beam mounting hole 5141 corresponding to the first head beam mounting hole 5133. Fig.15As shown, an end cap positioning block 522 is convexly provided on the side of the head beam end cap 52 opposite to the extension portion 5132, and the end cap positioning block 522 has a third head beam mounting hole 523, and the third head beam mounting hole 523 corresponds to the first head beam mounting hole 5133 and the second head beam mounting hole 5141. The extension portion 5132 also has an end cap positioning groove 5134, and the shape and position of the end cap positioning groove 5134 match the end cap positioning block 522, so that the end cap positioning block 522 can be inserted into the end cap positioning groove 5134 for positioning. The head beam fastener 53 is penetrated through the third head beam mounting hole 523, the first head beam mounting hole 5133 and the second head beam mounting hole 5141 to connect the head beam end cap 52, the upper shell 513 and the lower shell 514.

[0071] In some embodiments, reference Fig.18 The head beam housing 51 has a first stop surface 515, and the sliding section 31 has a clamping platform 311. The first stop surface 515 is arranged opposite to the clamping platform 311. The first stop surface 515 is configured to cooperate with the clamping platform 311 to limit the maximum length of the sliding section 31 exposed from the head beam body 50. The sliding section 31 also has a fixed groove 312, and the slideway 511 has an elastic protrusion 5111 corresponding to the fixed groove 312. The fixed groove 312 is arranged close to the clamping platform 311. When the elastic protrusion 5111 is engaged with the fixed groove 312, the extended length of the sliding arm 30 can be positioned. Optionally, when the fixed groove 312 is connected to the elastic protrusion 5111, the clamping platform 311 is away from the first stop surface 515, and the sliding arm 30 can be limited to a shorter extended length. For example, when the fixing groove 312 is connected to the elastic protrusion 5111, the extended length of the sliding arm 30 is close to or equal to the shortest value, which can prevent the ear shell 10 from directly colliding with the headband body 50, and at the same time prevent the sliding arm 30 from arbitrarily extending when the headset is in a shorter storage state.

[0072] In some embodiments, reference Fig.17 The sliding section 31 has a second stop surface 313, which is arranged opposite to the outer end surface of the head beam end cover 52, and is used to limit the shortest length of the sliding section 31 to be retracted into the head beam body 50, so as to prevent the ear shell 10 from directly colliding with the head beam body 50. Optionally, when the second stop surface 313 abuts against the outer end surface of the head beam end cover 52, the elastic protrusion 5111 is connected to the fixing groove 312, so that the headset can be conveniently positioned at a shorter length, which is convenient for the storage of the headset.

[0073] Reference Fig.13The bottom of the slideway 511 has an avoidance groove 5112, the extension direction of the avoidance groove 5112 is parallel to the sliding direction of the sliding section 31, and is used to avoid the card platform 311 when the sliding arm 30 slides along the slideway 511, and the card platform 311 is arranged in the avoidance groove 5112. Optionally, the first stop surface 515 is a side wall of the avoidance groove 5112.

[0074] Reference Fig.16 The inner wall of the damping groove 71 has a ridge 72, and the extension direction of the ridge 72 intersects with the sliding direction of the sliding section 31. For example, optionally, the ridge 72 is perpendicular to the sliding direction of the sliding section 31, so that the ridge 72 can form a relatively close contact with the side surface of the sliding section 31, providing relatively stable damping.

[0075] The pull-out structure of the embodiment of the present invention is configured by arranging a slideway 511 in the head beam shell 51, the end of the head beam shell 51 has a damping block accommodating hole 512, the sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence, the connecting section 32 is slidably arranged on the slideway 511, and the pull-out damping block 70 is at least partially accommodated in the damping block accommodating hole 512 and abuts against the side surface of the sliding section 31 to provide damping when the sliding section 31 slides along the slideway 511. Therefore, the pull-out structure of the headset is simple to assemble, firm and reliable, and can provide relatively balanced damping during the length adjustment process.

[0076] The headset of the embodiment of the present invention reuses the sliding arm 30 so that the sliding arm 30 has both the function of rotation limiting and the function of adjusting the length of the headset, thereby reducing the number of components, making the overall structure of the headset simpler and easier to assemble, and at the same time helping to improve the reliability of the overall structure of the headset.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pull-out structure for headphones. It is characterized in that The pull-out structure comprises: A head beam body (50) comprises a head beam shell (51) and two head beam end covers (52), wherein the head beam shell (51) has a slideway (511), each of the head beam end covers (52) is respectively arranged at a corresponding end of the head beam shell (51) and connected to the head beam shell (51) via a head beam fastener (53), the end of the head beam shell (51) has a damping block accommodating hole (512), the head beam end cover (52) has a sliding arm through hole (521), and the slideway (511) is in communication with the sliding arm through hole (521); A sliding arm (30) comprising a sliding section (31) and a connecting section (32) connected in sequence, wherein the connecting section (32) is slidably arranged on the slideway (511) and penetrates through the sliding arm through hole (521), and the connecting section (32) is configured to be connected to the ear shell (10) of the headset; and A pull-out damping block (70) is at least partially accommodated in the damping block accommodation hole (512) and abuts against a side surface of the sliding section (31) to provide damping when the sliding section (31) slides along the slideway (511).

2. The pull-out structure according to claim 1, It is characterized in that Also includes: A spring wire (80) is accommodated in the head beam housing (51), and the spring wire (80) comprises a fixed portion (81) and a free end (82), wherein the fixed portion (81) is fixedly connected to the head beam housing (51), and the free end (82) is connected to the sliding section (31).

3. The pull-out structure according to claim 1, It is characterized in that The pull-out damping block (70) has a damping groove (71), the sliding section (31) is arranged in the damping groove (71) and contacts the side wall of the damping groove (71), and the notch of the damping groove (71) is opposite to the side wall of the damping block accommodating hole (512).

4. The pull-out structure according to claim 1, It is characterized in that The damping block accommodating hole (512) has an inclined wall hole section (5121), and the inclined wall hole section (5121) gradually shrinks from an end close to the sliding arm through hole (521) to an end away from the sliding arm through hole (521).

5. The pull-out structure according to claim 1, It is characterized in that The head beam shell (51) comprises an upper shell (513) and a lower shell (514) which are connected to each other. The upper shell (513) has a main body (5131) and an extension part (5132). The main body (5131) is arranged on the upper side of the lower shell (514). The extension part (5132) is arranged at the end of the main body (5131) and extends inward. The extension part (5132) is connected to the end of the lower shell (514). The damping block accommodating hole (512) is arranged on the extension part (5132). The head beam end cover (52) is arranged outside the extension part (5132).

6. The pull-out structure according to claim 5, It is characterized in that The extension portion (5132) has a first head beam mounting hole (5133) and an end cover positioning groove (5134), the first head beam mounting hole (5133) passes through the groove bottom of the end cover positioning groove (5134), and the end of the lower shell (514) has a second head beam mounting hole (5141) corresponding to the first head beam mounting hole (5133); An end cover positioning block (522) is convexly provided on the side of the head beam end cover (52) opposite to the extension portion (5132); the end cover positioning block (522) has a third head beam mounting hole (523); the end cover positioning block (522) is connected to the end cover positioning groove (5134); the head beam fastener (53) is passed through the third head beam mounting hole (523), the first head beam mounting hole (5133) and the second head beam mounting hole (5141) to connect the head beam end cover (52), the upper shell (513) and the lower shell (514).

7. The pull-out structure according to claim 1, It is characterized in that The head beam shell (51) has a first stop surface (515), the sliding section (31) has a clamping platform (311), the first stop surface (515) is arranged opposite to the clamping platform (311), and the first stop surface (515) is configured to cooperate with the clamping platform (311) to limit the maximum length of the sliding section (31) exposed from the head beam body (50).

8. The pull-out structure according to claim 7, It is characterized in that The sliding section (31) further comprises a fixing groove (312), the slideway (511) comprises an elastic protrusion (5111), the fixing groove (312) is arranged close to the card platform (311), and when the fixing groove (312) is connected to the elastic protrusion (5111), the card platform (311) is away from the first stop surface (515).

9. The pull-out structure according to claim 8, It is characterized in that The sliding section (31) has a second stop surface (313), and the second stop surface (313) is arranged opposite to the outer end surface of the head beam end cover (52). When the second stop surface (313) abuts against the outer end surface of the head beam end cover (52), the elastic protrusion (5111) is connected to the fixing groove (312).

10. The pull-out structure according to claim 7, It is characterized in that The bottom of the slideway (511) is provided with an avoidance groove (5112), the extension direction of the avoidance groove (5112) is parallel to the sliding direction of the sliding arm (30), the card platform (311) is arranged in the avoidance groove (5112), and the first stop surface (515) is a side wall of the avoidance groove (5112).

11. The pull-out structure according to claim 3, It is characterized in that The inner wall of the damping groove (71) has a raised portion (72), and the extension direction of the raised portion (72) intersects with the sliding direction of the sliding section (31).

12. A headset, It is characterized in that include: The pull-out structure according to any one of claims 1 to 11; as well as Two ear shells (10), each ear shell (10) is respectively arranged at one end of the pull-out structure and connected to the corresponding connecting section (32).

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