Drawing structure and headphones

Abstract

This invention provides a pull-out structure and a headphone. The pull-out structure has a slide rail inside the headband housing. The headband housing has a damping block receiving hole at its end. The sliding arm has a sliding section and a connecting section connected in sequence. The connecting section is slidably disposed in the slide rail. The pull-out damping block is at least partially received in the damping block receiving hole and abuts against the side surface of the sliding section to provide damping when the sliding section slides along the slide rail. Thus, the pull-out structure of the headphone is simple to assemble, robust and reliable, and can provide relatively balanced damping during length adjustment.

Description

[Technical Field]

[0001] This invention relates to the field of headphone technology, and more particularly to a pull-out structure and a headphone. [Previous Technology]

[0002] Headphones are a widely used audio playback device. Based on how they are worn, they are mainly divided into over-ear, ear-hook, and in-ear types. To accommodate different head shapes, some over-ear headphones feature a pull-out mechanism to adjust the headband length. However, existing pull-out mechanisms for over-ear headphones suffer from problems such as complex structure and poor adjustment feel. [Summary of the Invention]

[0003] In view of the above, the object of the present invention is to provide a pull-out structure and a headphone that helps to solve or improve at least some of the problems existing in the prior art.

[0004] In a first aspect, embodiments of the present invention provide a pull-out structure for a headphone. The pull-out structure includes a headband body, a sliding arm, and a pull-out damping block. The headband body includes a headband housing and two headband end caps. The headband housing has a slide rail. Each headband end cap is disposed at a corresponding end of the headband housing and connected to the headband housing through a headband fastener. The end of the headband housing has a damping block receiving hole. The headband end cap has a sliding arm through hole. The slide rail communicates with the sliding arm through hole. The sliding arm has a sliding section and a connecting section connected in sequence. The connecting section is slidably disposed in the slide rail and passes through the sliding arm through hole. The connecting section is configured to connect with the ear shell of the headphone. The pull-out damping block is at least partially received in the damping block receiving hole and abuts against the side surface of the sliding section to provide damping when the sliding section slides along the slide rail.

[0005] Furthermore, the pull-out structure also includes a spring wire housed within the head beam housing. The spring wire has a fixed portion and a free end. The fixed portion is fixedly connected to the head beam housing, and the free end is connected to the sliding section.

[0006] Further, the pull-out damping block has a damping groove, the sliding section is disposed in the damping groove and contacts the side wall of the damping groove, and the groove opening of the damping groove is opposite to the side wall of the damping block receiving hole.

[0007] Further, the damping block receiving hole has an inclined wall section that gradually tapers from one end near the sliding arm through hole to the other end away from the sliding arm through hole.

[0008] Further, the head beam housing includes an upper housing and a lower housing connected to each other. The upper housing has a main body and an extension. The main body is located on the upper side of the lower housing. The extension is located at the end of the main body and extends inward. The extension is connected to the end of the lower housing. The damping block receiving hole is located in the extension. The head beam end cap is located outside the extension.

[0009] Further, the extension has a first head beam mounting hole and an end cap positioning groove. The first head beam mounting hole penetrates the bottom of the end cap positioning groove. The end of the lower housing has a second head beam mounting hole corresponding to the first head beam mounting hole. An end cap positioning block protrudes from the side of the head beam end cap opposite to the extension. The end cap positioning block has a third head beam mounting hole. The end cap positioning block is connected to the end cap positioning groove. The head beam fastener passes 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 cap, the upper housing, and the lower housing.

[0010] Further, the head beam housing has a first stop surface, the sliding section has a locking platform, the first stop surface is disposed opposite to the locking platform, and the first stop surface is configured to cooperate with the locking platform to limit the maximum length of the sliding section exposed in the head beam body.

[0011] Furthermore, the sliding section also has a fixed groove, the slide has an elastic protrusion, the fixed groove is disposed close to the card platform, and when the fixed groove is connected to the elastic protrusion, the card platform is away from the first stop surface.

[0012] Further, the sliding section has a second stop surface, which is disposed 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] Further, the bottom of the slide has a relief groove, the extension direction of the relief groove is parallel to the sliding direction of the sliding arm, the locking platform is disposed in the relief groove, and the first stop surface is a side wall of the relief groove.

[0014] Furthermore, the inner wall of the damping groove has a raised portion, the extension direction of which intersects the sliding direction of the sliding segment.

[0015] In a second aspect, embodiments of the present invention also provide a headset, including a pull-out structure as described in the first aspect and two ear shells, each ear shell being disposed at one end of the pull-out structure and connected to the corresponding connecting segment.

[0016] This embodiment of the invention provides a pull-out structure and a headphone. The pull-out structure has a slide rail provided in the headband housing. The end of the headband housing has a damping block receiving hole. The sliding arm has a sliding section and a connecting section connected in sequence. The connecting section is slidably disposed in the slide rail. The pull-out damping block is at least partially received in the damping block receiving hole and abuts against the side surface of the sliding section to provide damping when the sliding section slides along the slide rail. Thus, the pull-out structure of the headphone is simple to assemble, firm and reliable, and can provide relatively balanced damping during the length adjustment process.

Implementation Method

[0018] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the following detailed description of the present application, some specific details are described in detail. Those skilled in the art to which this application pertains can fully understand the present application without these details. In order to avoid obscuring the substance of the present application, well-known methods, processes, flows, elements and circuits are not described in detail.

[0019] Furthermore, those skilled in the art to which this application pertains should understand that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. For those skilled in the art to which this application pertains, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] For ease of explanation, spatially related terms such as “inner,” “outer,” “below,” “below,” “lower,” “above,” “upper,” etc., are used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. It will be understood that spatially related terms may be intended to encompass different orientations of the device in use or operation other than those depicted in the figures. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially related descriptive terms used herein should be interpreted accordingly.

[0022] Unless the context explicitly requires it, words such as "including" or "contains" in the entire application document should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0023] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0024] This embodiment of the invention provides a headset and a rotating structure for the headset. Referring to Figures 1 and 2, the headset of this embodiment includes a headband body 50 and two rotating structures respectively disposed at both ends of the headband body 50. The headband body 50 is used to hang on the user's head when the headset is in use. The rotating structure includes an ear shell 10, which is used to accommodate the speaker unit of the headset. By providing the rotating structure, the ear shell 10 can rotate relative to the headband body 50, thereby facilitating the storage of the headset. The rotating structure of this embodiment will be described in detail below with reference to the figures.

[0025] Referring to Figures 3 and 4, in this embodiment, the rotating structure further includes a rotating bracket 20 and a sliding arm 30. Referring to Figures 3-5 and 8, the sliding arm 30 has a sliding section 31 and a connecting section 32 connected in sequence. The sliding section 31 is telescopically connected to the headband body 50, thereby allowing the length of the headphones to be adjusted to fit different users' heads. The rotating bracket 20 is connected to the ear shell 10 and circumferentially fixed relative to the ear shell 10. The connecting section 32 of the sliding arm 30 protrudes outside the headband body 50 and is rotatably connected to the rotating bracket 20, thereby allowing the ear shell 10 and the rotating bracket 20 to rotate around the connecting section 32, realizing the rotation of the ear shell 10 relative to the headband body 50. Optionally, the sliding arm 30 may have a hollow structure inside, which can realize the function of wiring, facilitating the cable connection of the speaker unit inside the ear shell 10.

[0026] Referring to Figures 6 and 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 and the second rotation limiting structure cooperate to limit the rotation range of the rotating bracket 20 and the ear shell 10 relative to the sliding arm 30.

[0027] In some embodiments, as shown in FIG5, the second rotation limiting structure is a limiting groove 321, which extends circumferentially along the connecting section 32, and the limiting groove 321 has a first limiting wall 3211 and a second limiting wall 3212 disposed opposite to each other circumferentially along the connecting section 32. As shown in FIG6-FIG8, the first rotation limiting structure of the rotating bracket 20 is a limiting protrusion 214, which is disposed in the limiting groove 321 and can move between the first limiting wall 3211 and the second limiting wall 3212. By setting the relative positions of the first limiting wall 3211 and the second limiting wall 3212, the range of motion of the limiting protrusion 214 in the limiting groove 321 can be set, thereby setting the range of rotation angle of the ear shell 10 relative to the headband body 50. By adopting this design, the embodiments of the present invention facilitate the setting of the range of rotation angle of the ear shell 10, allow for a larger rotation angle, and ensure connection strength, preventing excessive torsion from damaging the rotating structure.

[0028] Optionally, as shown in Figures 4 and 9, the limiting groove 321 has a stop end face 3213, which is disposed opposite to the top surface of the limiting protrusion 214 to restrict the axial movement of the rotating bracket 20 along the connecting section 32 and prevent the rotating bracket 20 from coming off along the axial direction of the sliding arm 30.

[0029] Referring to Figures 4-9, the rotating bracket 20 has a first mounting hole 22, which is spaced apart from the first rotation limiting structure. The ear shell 10 has a second mounting hole 11 corresponding to the position of the first mounting hole 22. The rotating structure also includes an ear shell fastener 61, which 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, screw, 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.

[0030] In some embodiments, referring to Figures 3, 4, and 9, the rotating structure further includes a rotation damping block 40 for contacting the connecting section 32 of the sliding arm 30, thereby providing damping during the rotation of the sliding arm 30 relative to the rotating bracket 20. This allows the ear shell 10 to be stabilized in the desired position after the user rotates it relative to the headband body 50, achieving an angle positioning effect and preventing the ear shell 10 from rotating arbitrarily when not in use. The rotation damping block 40 can be made of any material that can provide damping by compression with the sliding arm 30, such as wear-resistant silicone, wear-resistant rubber, or other wear-resistant composite materials. In this embodiment, the rotation damping block 40 can be made of polyoxymethylene (POM) resin. POM resin has the characteristics of high hardness, high rigidity, high wear resistance, good elasticity, and good dimensional stability, making it suitable for manufacturing the rotation damping block 40 to provide damping through friction with the connecting section 32.

[0031] In some embodiments, a rotary damping block 40 is disposed at one end of the rotary support 20 and connected to the rotary support 20. The rotary damping block 40 and the rotary support 20 are fixed relative to each other at least in the circumferential direction. The sliding arm 30 rotates relative to the rotary support 20 and also rotates relative to the rotary damping block 40. The rotary damping block 40 rubs against the connecting segment 32 to provide damping. The rotary damping block 40 may include one or more, for example, it may be a block structure disposed on the outside of the connecting segment 32 and pressed against the side surface of the connecting segment 32. In one embodiment, referring to FIG10, the rotary damping block 40 has a rotary damping hole 41. The connecting segment 32 is inserted into the rotary damping block 40 and is interference-fitted with the rotary damping hole 41. When the connecting segment 32 is inserted into the rotary damping hole 41, the outer surface of the connecting segment 32 is in close contact with the inner wall of the rotary damping hole 41, which can achieve a better damping effect.

[0032] Optionally, as shown in Figure 10, the rotary damping block 40 also has an adjustment groove 42. The adjustment groove 42 is formed on the side wall of the rotary damping hole 41 and can penetrate the side wall of the rotary damping hole 41 radially. Referring to Figure 10, the rotary damping block 40 can form a damping cylinder. The damping cylinder has a cylindrical structure, and the rotary damping hole 41 is formed in the middle of the damping cylinder. The damping cylinder surrounds the outside of the connecting section 32. The upper end of the adjustment groove 42 can extend to the end face of the damping cylinder. The setting of the adjustment groove 42 allows the damping cylinder to have a certain deformation space, which facilitates the installation of the connecting section 32 into the rotary damping hole 41. Furthermore, 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.

[0033] In some embodiments, referring to FIG11, the end of the ear shell 10 for connecting with the headband body 50 has a second mounting groove 12. 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 positioning of the rotating bracket 20 and the rotating damping block 40. Preferably, the second mounting groove 12 is a non-rotational shape, which can prevent the rotating bracket 20 and the rotating damping block 40 from rotating in the second mounting groove 12. Optionally, the side surfaces of the rotating bracket 20 and the rotating damping block 40 are formed with multiple anti-slip protrusions. The anti-slip protrusions can press against the side wall 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, ensuring the user's experience.

[0034] Referring to Figures 3 and 4, the rotating structure also includes an ear shell top cover 60. The ear shell top cover 60 is connected to the ear shell 10. The rotating bracket 20 is located on the 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 providing shielding and protection for the rotating bracket 20 and other structures within the second mounting groove 12. The ear shell top cover 60 has a third mounting hole 62 corresponding to the position of the first mounting hole 22. 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.

[0035] Optionally, the rotary damping block 40 has a fourth mounting hole 43. As shown in Figures 4 and 11, a connecting post 13 protrudes from the bottom of the second mounting groove 12, and a second mounting hole 11 is provided on the connecting post 13. The connecting post 13 extends toward the opening of the second mounting groove 12. The size of the fourth mounting hole 43 and the first mounting hole 22 corresponds to the size of the connecting post 13, so that the connecting post 13 passes through the fourth mounting hole 43 of the rotary damping block 40 and the first mounting hole 22 of the rotary bracket 20 and is positioned opposite to the ear shell top cover 60. Thus, the connecting post 13 can provide a positioning effect for the rotary damping block 40 and the rotary bracket 20. Further, there can be two connecting posts 13 spaced apart, each with a corresponding second mounting hole 11. Thus, after the connecting post 13 passes through the fourth mounting hole 43 of the rotary damping block 40 and the first mounting hole 22 of the rotary bracket 20, the rotary damping block 40 and the rotary bracket 20 can be circumferentially fixed.

[0036] Referring to 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 post 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 post 13 is located 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 post 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 post 13 are connected through 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 earcup top cover 60 has a countersunk hole on the side opposite to the rotating bracket 20, and the earcup fastener 61 is a screw with the head of the earcup fastener 61 located in the countersunk hole, thereby improving the aesthetics of the headphones.

[0037] In some embodiments, referring to Figures 10 and 7, the side of the rotary damping block 40 opposite to the rotary support 20 has a first positioning structure 44, and the side of the rotary support 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 and the second positioning structure 23 cooperate to realize the positioning connection between the rotary damping block 40 and the rotary support 20, thereby ensuring the relative position between the connecting section 32, the rotary damping block 40, and the rotary support 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. The positioning block is inserted into the positioning groove, and positioning is achieved through insertion. For example, in one embodiment, referring to Figures 10 and 7, the first positioning structure 44 includes a positioning groove, and the second positioning structure 23 includes a positioning block.

[0038] In some embodiments, referring to Figures 4-9, 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 arranged sequentially along the extending direction of the sliding arm 30. 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 rotation bracket 20, which can prevent the rotation 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 provided in the limiting shaft section 325. The rotating bracket 20 is provided with a first mounting groove 21. The first mounting groove 21 has a positioning groove section 211, a contraction groove section 212, and a stop groove section 213 arranged sequentially along the extension direction of the sliding arm 30. The stop shaft section 323 is at least partially disposed in the positioning groove section 211, and the limiting protrusion 214 protrudes from the stop groove section 213. The distance between the two opposite side walls of the first mounting groove 21 decreases at the contraction groove section 212, forming a stepped structure. The transition shaft section 324 is disposed in the contraction groove section 212. Due to the small width of the contraction groove section 212, the stop shaft section 323 is blocked by the stepped structure formed between the contraction groove section 212 and the positioning groove section 211, thus achieving axial fixation. The opening of the first mounting groove 21 is opened laterally on the rotating bracket 20, and the sliding arm 30 can be inserted into the first mounting groove 21 through the opening of the first mounting groove 21, which facilitates assembly.

[0039] The rotating structure of this embodiment of the invention involves connecting a rotating bracket 20 to the earcup 10, with a first rotating limiting structure on the rotating bracket 20 and a second rotating limiting structure on the sliding arm 30 connected to the headband body 50. The second rotating limiting structure cooperates with the first rotating limiting structure to limit the rotation range of the earcup 10 relative to the sliding arm 30. Thus, by setting the rotating limiting structure on the sliding arm 30 of the headphones, the structure is simple, easy to assemble, and has good strength. This arrangement also allows the earcup 10 to have a larger rotation range. Furthermore, this embodiment of the invention provides a rotating damping block 40 at one end of the rotating bracket 20, which contacts the connecting section 32 to provide damping during the rotation of the sliding arm 30 relative to the rotating bracket 20, thereby achieving good adjustment feel and angle positioning effect.

[0040] In some applications, the length of the headphones is adjustable to accommodate users with different head shapes. Optionally, the sliding section 31 of the sliding arm 30 is telescopically connected to the headband body 50. By adjusting the length of the sliding arm 30 protruding from the headband body 50, the length of the headphones can be easily adjusted. To achieve headphone length adjustment, this embodiment of the invention also provides a pull-out structure for the headphones, which will be described in detail below with reference to the figures.

[0041] Referring to Figures 1-2 and 12-18, the pull-out structure includes a headband body 50, a sliding arm 30, and a pull-out damping block 70. The sliding arm 30 can be the sliding arm 30 described in the rotating structure embodiment above. 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 headband body 50.

[0042] The head beam body 50 includes a head beam housing 51 and two head beam end caps 52. Each head beam end cap 52 is respectively disposed at one end of the head beam housing 51 and connected to the head beam housing 51 through a head beam fastener 53. The head beam fastener 53 can be a screw, bolt, pin, or other fastener suitable for connecting the head beam housing 51 and the head beam end cap 52. Optionally, the head beam fastener 53 is a detachable fastener, which can facilitate maintenance.

[0043] The head beam housing 51 has a slide rail 511, and the sliding section 31 of the sliding arm 30 is slidably disposed in the slide rail 511. The head beam end cover 52 has a sliding arm through hole 521, the slide rail 511 is connected to the sliding arm through hole 521, and the sliding arm 30 passes through the sliding arm through hole 521.

[0044] A pull-out damping block 70 is disposed within the headband body 50 and abuts against the side surface of the sliding section 31 to provide damping when the sliding section 31 slides along the slide rail 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 in that position, achieving 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 pressed against the sliding arm 30 to provide damping, such as wear-resistant silicone, wear-resistant rubber, or other wear-resistant composite materials.

[0045] Optionally, referring to Figure 12, the pull-out structure further includes a spring wire 80, housed within the headband housing 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 headband housing 51, and the free end 82 is connected to the sliding section 31. The spring wire 80 is a retractable cable formed by coiling or folding. The elasticity of the spring wire 80 can assist the sliding arm 30 in retracting into the headband body 50 to achieve reset, and provides a certain feedback force when the user pulls out the sliding arm 30, resulting in a better operating feel. There can be one spring wire 80, wherein the fixed portion 81 is located in the middle of the spring wire 80 and can be fixed in the middle position of the headband housing 51; both ends of the spring wire 80 are free ends 82, which are connected to the sliding arm 30. When the sliding section 31 is pulled out of the headband body 50, the spring wire 80 is stretched. Optionally, each ear shell 10 is provided with a main board for controlling the operation of the speaker unit inside the ear shell 10. The free end 82 of the spring wire 80 passes through the hollow structure inside the sliding arm 30, so that the spring wire 80 passes into the ear shell 10 and is electrically connected to the main board provided inside the ear shell 10.

[0046] Referring to Figures 17 and 18, the end of the head beam housing 51 has a damping block receiving hole 512, in which the pull-out damping block 70 is at least partially received. The size of the damping block receiving hole 512 matches the size of the pull-out damping block 70 to achieve positioning of the pull-out damping block 70. Optionally, the head beam end cap 52 at least partially covers the damping block receiving hole 512 to achieve protection for the pull-out damping block 70.

[0047] Optionally, referring to FIG16, the pull-out damping block 70 has a damping groove 71, and a sliding section 31 is disposed in the damping groove 71 and contacts the side wall of the damping groove 71. The opening of the damping groove 71 is opposite to the side wall of the damping block receiving hole 512. The sliding section 31 can be easily inserted into the damping groove 71 from the opening 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.

[0048] In one embodiment, further referring to Figures 14, 17-18, the damping block receiving hole 512 has an inclined wall section 5121, which gradually narrows from one end near 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 disposed in the damping block receiving hole 512, the outer wall of the pull-out damping block 70 is pressed against the inclined wall section 5121. Under the elastic force of the spring wire 80, the sliding arm 30 tends to retract into the headband body 50. The friction between the sliding arm 30 and the pull-out damping block 70 causes the pull-out damping block 70 to move away from the sliding arm through hole 521. Since the damping groove 71 is an open structure, the groove opening of the damping groove 71 is opposite to the side wall of the damping block receiving hole 512. This causes the inclined wall hole section 5121 to squeeze 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. Therefore, 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 the length positioning effect of the headphones, preventing the sliding arm 30 from retracting arbitrarily during operation.

[0049] In some embodiments, referring to FIG12, the headband housing 51 includes an upper housing 513 and a lower housing 514 connected to each other. The upper housing 513 and the lower housing 514 enclose an internal cavity to accommodate the spring wire 80 and at least a portion of the sliding section 31. The headband housing 51 forms a U-shaped structure. The upper housing 513 has a main body 5131 and an extension 5132, wherein the main body 5131 is disposed on the upper side of the lower housing 514, and the main body 5131 and the lower housing 514 can be fastened together. The extension 5132 is disposed at the end of the main body 5131 and extends inward (i.e., the inside of the U-shaped structure), and the extension 5132 is connected to the end of the lower housing 514. A damping block receiving hole 512 may be disposed in the extension 5132, and the headband end cap 52 is disposed over the extension 5132 to protect the pull-out damping block 70.

[0050] Optionally, as shown in FIG14, the extension 5132 has a first head beam mounting hole 5133, which penetrates the bottom of the end cap positioning groove 5134. The end of the lower housing 514 has a second head beam mounting hole 5141 corresponding to the first head beam mounting hole 5133. As shown in FIG15, an end cap positioning block 522 protrudes from the side of the head beam end cap 52 opposite to the extension 5132. The end cap positioning block 522 has a third head beam mounting hole 523, which corresponds to the first head beam mounting hole 5133 and the second head beam mounting hole 5141. The extension 5132 also has an end cap positioning groove 5134, the shape and position of which 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 passes 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 housing 513, and the lower housing 514.

[0051] In some embodiments, referring to FIG18, the headband housing 51 has a first stop surface 515, and the sliding segment 31 has a locking platform 311. The first stop surface 515 and the locking platform 311 are disposed opposite to each other. The first stop surface 515 is configured to cooperate with the locking platform 311 to limit the maximum length of the sliding segment 31 exposed in the headband body 50. The sliding segment 31 also has a fixing groove 312, and the slide rail 511 has an elastic protrusion 5111 corresponding to the fixing groove 312. The fixing groove 312 is disposed close to the locking platform 311. When the elastic protrusion 5111 engages with the fixing groove 312, the extension length of the sliding arm 30 can be positioned. Optionally, when the fixing groove 312 is connected to the elastic protrusion 5111, the locking platform 311 is away from the first stop surface 515, which can limit the sliding arm 30 to a shorter extension length. For example, when the fixed groove 312 is connected to the elastic protrusion 5111, the extension 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 headphones are in a shorter storage state.

[0052] In some embodiments, referring to FIG17, the sliding segment 31 has a second stop surface 313, which is disposed opposite to the outer end face of the headband end cover 52, and is used to limit the shortest length of the sliding segment 31 when it retracts into the headband body 50, so as to avoid the ear shell 10 directly colliding with the headband body 50. Optionally, when the second stop surface 313 abuts against the outer end face of the headband end cover 52, the elastic protrusion 5111 is connected to the fixing groove 312, which can conveniently position the headphones at a shorter length, making it convenient to store the headphones.

[0053] Referring to Figure 13, the bottom of the slide rail 511 has a relief groove 5112. The extension direction of the relief groove 5112 is parallel to the sliding direction of the sliding section 31, and it is used to avoid the locking platform 311 when the sliding arm 30 slides along the slide rail 511. The locking platform 311 is disposed in the relief groove 5112. Optionally, the first stop surface 515 is a side wall of the relief groove 5112.

[0054] Referring to FIG16, the inner wall of the damping groove 71 has a raised portion 72, the extending direction of which intersects the sliding direction of the sliding segment 31. For example, optionally, the raised portion 72 is perpendicular to the sliding direction of the sliding segment 31, thereby the raised portion 72 can form a closer contact with the side surface of the sliding segment 31, providing more stable damping.

[0055] The pull-out structure of this embodiment of the invention has a slide rail 511 provided in the headband housing 51, and the end of the headband housing 51 has a damping block receiving 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 disposed in the slide rail 511. The pull-out damping block 70 is at least partially accommodated in the damping block receiving hole 512 and abuts against the side surface of the sliding section 31 to provide damping when the sliding section 31 slides along the slide rail 511. Thus, 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.

[0056] The headphones of the present invention reuse the sliding arm 30, so that the sliding arm 30 has both the function of rotation limit and the function of headphone length adjustment, reducing the number of parts, making the overall structure of the headphones simpler and easier to assemble, and at the same time helping to improve the reliability of the overall structure of the headphones.

[0057] The above description is only a preferred embodiment of this application and is not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. [Simplified Explanation of the Diagram]

[0017] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the drawings, in which: FIG1 is a perspective structural schematic diagram of a headset according to an embodiment of the present invention; FIG2 is an exploded schematic diagram of a headset according to an embodiment of the present invention; FIG3 is an exploded schematic diagram of a rotating structure according to an embodiment of the present invention; FIG4 is a cross-sectional schematic diagram of a rotating structure according to an embodiment of the present invention; FIG5 is a perspective structural schematic diagram of a sliding arm according to an embodiment of the present invention; FIG6 is a perspective structural schematic diagram of a rotating bracket according to an embodiment of the present invention from one perspective; FIG7 is a perspective structural schematic diagram of a rotating bracket according to another perspective; FIG8 is a schematic diagram of the connection between the rotating bracket and the sliding arm according to an embodiment of the present invention; FIG9 is a cross-sectional schematic diagram of the connection between the rotating bracket, the sliding arm, the rotating damping block and the ear shell top cover according to an embodiment of the present invention; FIG10 is a perspective structural schematic diagram of the rotating damping block according to an embodiment of the present invention; FIG11 is a schematic diagram of the rotating structure according to an embodiment of the present invention after removing the ear shell top cover; FIG12 is an exploded schematic diagram of a pull-out structure according to an embodiment of the present invention; FIG13 is a partial schematic diagram of the lower shell according to an embodiment of the present invention; FIG14 is a partial schematic diagram of the upper shell according to an embodiment of the present invention. Figure 15 is a structural schematic diagram of the head beam end cap according to an embodiment of the present invention; Figure 16 is a structural schematic diagram of the pull-out damping block according to an embodiment of the present invention; Figure 17 is a partial cross-sectional schematic diagram of the pull-out structure according to an embodiment of the present invention when the sliding section is retracted into the head beam body; Figure 18 is a partial cross-sectional schematic diagram of the pull-out structure according to an embodiment of the present invention when the sliding section extends out of the head beam body to its maximum length.

Claims

1. A pull-out structure for a headset, the pull-out structure comprising: A head beam body (50) includes a head beam housing (51) and two head beam end caps (52). The head beam housing (51) has a slide rail (511). Each head beam end cap (52) is respectively disposed at the corresponding end of the head beam housing (51) and connected to the head beam housing (51) through a head beam fastener (53). The end of the head beam housing (51) has a damping block receiving hole (512). The head beam end cap (52) has a sliding arm through hole (521). The slide rail (511) communicates with the sliding arm through hole (521). The damping block receiving hole (512) has an inclined wall section (5121). The inclined wall section (5121) gradually tapers from the end near the sliding arm through hole (521) to the end away from the sliding arm through hole (521). A sliding arm (30) has a sliding section (31) and a connecting section (32) connected in sequence. The sliding section (31) is slidably disposed in the slide rail (511) and passes through the sliding arm through hole (521). The connecting section (32) is configured to connect with the ear shell (10) of the headset. A pull-out damping block (70) is at least partially accommodated in the damping block receiving hole (512) and abuts against the side surface of the sliding section (31) to provide damping when the sliding section (31) slides along the slide rail (511). 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). The opening of the damping groove (71) is opposite to the side wall of the damping block receiving hole (512).

2. The pull-out structure as described in claim 1, wherein, It also includes: a spring wire (80) housed in the head beam housing (51), the spring wire (80) having a fixed part (81) and a free end (82), the fixed part (81) being fixedly connected to the head beam housing (51), and the free end (82) being connected to the sliding section (31).

3. The pull-out structure as described in claim 1, wherein, The headgear housing (51) includes an upper housing (513) and a lower housing (514) connected to each other. The upper housing (513) has a main body (5131) and an extension (5132). The main body (5131) is located on the upper side of the lower housing (514). The extension (5132) is located at the end of the main body (5131) and extends inward. The extension (5132) is connected to the end of the lower housing (514). The damping block receiving hole (512) is located in the extension (5132). The headgear end cap (52) is covered outside the extension (5132).

4. The pull-out structure as described in claim 3, wherein, The extension (5132) has a first head beam mounting hole (5133) and an end cap positioning groove (5134). The first head beam mounting hole (5133) penetrates the bottom of the end cap positioning groove (5134). The end of the lower housing (514) has a second head beam mounting hole (5141) corresponding to the first head beam mounting hole (5133). The head beam end cap (52) has a protruding end cap positioning block (522) on the side opposite to the extension (5132). The end cap positioning block (522) has a third head beam mounting hole (523). The end cap positioning block (522) is connected to the end cap positioning groove (5134). The head beam fastener (53) passes 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 housing (513), and the lower housing (514).

5. The pull-out structure as described in claim 1, wherein, The head beam housing (51) has a first stop surface (515), and the sliding section (31) has a locking platform (311). The first stop surface (515) is disposed opposite to the locking platform (311), and the first stop surface (515) is configured to cooperate with the locking platform (311) to limit the maximum length of the sliding section (31) exposed in the head beam body (50).

6. The pull-out structure as described in claim 5, wherein, The sliding section (31) also has a fixed groove (312), and the slide (511) has an elastic protrusion (5111). The fixed groove (312) is located close to the mounting plate (311). When the fixed groove (312) is connected to the elastic protrusion (5111), the mounting plate (311) is away from the first stop surface (515).

7. The pull-out structure as described in claim 6, wherein, The sliding section (31) has a second stop surface (313), which is disposed opposite to the outer end surface of the head beam end cap (52). When the second stop surface (313) abuts against the outer end surface of the head beam end cap (52), the elastic protrusion (5111) is connected to the fixing groove (312).

8. The pull-out structure as described in claim 5, wherein, The bottom of the slide (511) has a relief groove (5112), the extension direction of the relief groove (5112) is parallel to the sliding direction of the sliding arm (30), the mounting plate (311) is disposed in the relief groove (5112), and the first stop surface (515) is a side wall of the relief groove (5112).

9. The pull-out structure as described in claim 1, wherein, The inner wall of the damping groove (71) has a raised portion (72), the extension direction of which intersects the sliding direction of the sliding segment (31).

10. A headset comprising: A pull-out structure as described in any one of claims 1 to 9; And two ear shells (10), each ear shell (10) is located at one end of the pull-out structure and connected to the corresponding connecting segment (32).

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