Headphone rotating fine-tuning mechanism and headphone

Abstract

The present invention provides an earphone rotation fine-tuning mechanism and earphone, belonging to the earphone field, comprising a first swing arm seat for connecting with an earphone headband, a second swing arm seat for connecting with an ear shell support arm and having one end rotatably connected with one end of the first swing arm seat, an adjustment through hole penetrating the first swing arm seat and the second cantilever seat, a self-resetting regulating structure arranged in the adjustment through hole and capable of sliding along the axial direction of the adjustment through hole, and a clutch structure connected to one end of the self-resetting regulating structure and plugged into one end of the adjustment through hole and capable of locking along the radial direction of the adjustment through hole. The earphone rotation fine-tuning mechanism and earphone provided by the present invention have a relatively compact overall structure, occupy very little space, and can effectively improve the comfort and portability of wearing.

Description

Technical Field

[0001] The invention belongs to the technical field of earphones, and more specifically, relates to an earphone rotation fine-tuning mechanism and an earphone comprising the same. Background Art

[0002] Headphones are common audio playback devices, which are generally larger than earbud headphones. They include a headband and ear shell arms arranged on both sides of the headband and used to directly fit against the human ear and play sound. The headband is elastic. When in use, the ear shell arms are tightly fitted against the human ear by relying on the elasticity of the headband. In order to improve the wearing comfort, some angle adjustment structures are also arranged between the ear shell arms and the headband so that the angle of the ear shell arms can be adjusted. After adjusting to the specified angle, it is necessary to fix it to ensure that the angle between the ear shell arms and the headband remains unchanged after adjustment. The existing structure capable of adjusting the angle of the ear shell arms is generally complex in structure and large in size, and cannot further improve the wearing comfort and portability. Summary of the invention

[0003] The purpose of the present invention is to provide an earphone rotation fine-tuning mechanism to solve the technical problems in the prior art that the angle adjustment structure between the earphone headband and the ear shell support arm occupies a large space and has a complex structure.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an earphone rotation fine-tuning mechanism, including: a first swing arm seat for connecting to the earphone headband, a second swing arm seat for connecting to the ear shell and the ear shell support arm and having one end rotatably connected to one end of the first swing arm seat, an adjustment through hole passing through the first swing arm seat and the second cantilever seat, a self-resetting control structure arranged in the adjustment through hole and capable of sliding along the axial direction of the adjustment through hole, and a clutch structure connected to one end of the self-resetting control structure and inserted into one end of the adjustment through hole and capable of radial locking along the adjustment through hole.

[0005] Furthermore, the clutch structure includes a clutch plug-in block.

[0006] Furthermore, the self-resetting control structure includes an adjusting rod arranged in the adjusting through hole, a control button fixed at the other end of the adjusting rod and an elastic element arranged on the outer periphery of the adjusting rod, and the clutch plug is arranged at one end of the adjusting rod; the adjusting through hole includes a central hole body, a button ring groove arranged at one end of the central hole body and used to accommodate the control button, and a plug slot arranged at the other end of the central hole body and connected with the clutch plug; a limiting protrusion structure is provided in the middle of the central hole body, one end of the elastic element abuts against the limiting protrusion structure, and the other end of the elastic element abuts against the control button.

[0007] Furthermore, the control button includes a button limit block fixed to one end of the adjusting rod and a button surface block fixed to the outside of the button limit block and protruding from the button ring groove. The button limit block is a polygonal prism component, and the button ring groove is a polygonal groove that cooperates with the button limit block.

[0008] Furthermore, the elastic element includes a first return compression spring which is sleeved on the outer circumference of the adjusting rod and has two ends respectively abutting against the button limiting block and the limiting protrusion structure.

[0009] Furthermore, the limiting protrusion structure includes a first limiting protrusion ring provided at one end of the first swing arm seat and a second limiting protrusion ring provided at one end of the second swing arm seat and contacting and cooperating with the first limiting protrusion ring; one end of the first return compression spring abuts against the button limiting block, and the other end of the first return compression spring abuts against the first limiting protrusion ring or the second limiting protrusion ring.

[0010] Furthermore, the elastic element also includes a second return compression spring sleeved on the outer circumference of the adjusting rod, one end of the second return compression spring abuts against the clutch plug, and the other end of the second return compression spring abuts against the first limiting convex ring or the second limiting convex ring.

[0011] Furthermore, a connecting sleeve is provided on the inner side of the first limiting protrusion ring and the second limiting protrusion ring for clamping and fixing the first limiting protrusion ring and the second limiting protrusion ring in the axial direction of the adjusting through hole, and the connecting sleeve is sleeved on the outer periphery of the adjusting rod.

[0012] Furthermore, a blocking piece is fixedly connected to the outer end surface of the clutch plug-in block, which abuts against the outer end surface of the plug-in block slot and is used to block the plug-in block slot.

[0013] Furthermore, an end cover for sealing the plug-in slot is also provided at the end of the plug-in slot.

[0014] The beneficial effect of the headphone rotation fine-adjustment mechanism provided by the present invention is that compared with the prior art, the headphone rotation fine-adjustment mechanism of the present invention ensures the flexibility of rotation adjustment and the reliability of angle fixing after adjustment. At the same time, since the main adjustment structures are located within the first swing arm seat and the second swing arm seat, and both rely on the self-resetting adjustment structure to slide along the axis of the adjustment through hole to drive the clutch structure close to or away from the adjustment through hole, thereby achieving locking and unlocking, the overall structure of the self-resetting adjustment structure and the clutch structure is relatively simple, the overall structure of the headphone rotation fine-adjustment mechanism is relatively compact, and the space occupied is very small, which can effectively improve the wearing comfort and portability.

[0015] The present invention also provides an earphone, comprising the earphone headband, the ear shell support arm and the earphone rotation fine-adjustment mechanism respectively connected to the earphone headband and the ear shell support arm.

[0016] The beneficial effect of the earphones provided by the present invention is that compared with the prior art, the earphones of the present invention, by adopting the above-mentioned earphone rotating fine-tuning mechanism with simple and compact structure and reliable adjustment and fixing effect, can make the overall structure of the earphones simpler and lighter while ensuring the comfort of using the earphones, thereby further improving the comfort and portability of wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 Schematic diagram of the use of the earphone rotation fine-tuning mechanism provided in Embodiment 1 of the present invention Figure 1 ;

[0019] Figure 2 for Figure 1 AA section view;

[0020] Figure 3 This is a schematic diagram of the exploded structure of the earphone rotation fine-tuning mechanism provided in the first embodiment of the present invention;

[0021] Figure 4 Schematic diagram of the use of the earphone rotation fine-tuning mechanism provided in Embodiment 1 of the present invention Figure 2 ;

[0022] Figure 5 Schematic diagram of the use of the earphone rotation fine-tuning mechanism provided in Embodiment 1 of the present invention Figure 3 ;

[0023] Figure 6 A cross-sectional view of the internal structure of the earphone rotation fine-tuning mechanism provided in the second embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the exploded structure of the earphone rotation fine-tuning mechanism provided in the second embodiment of the present invention;

[0025] Figure 8 A cross-sectional view of the internal structure of the earphone rotation fine-tuning mechanism provided in Embodiment 3 of the present invention;

[0026] Fig. 9 This is a schematic diagram of the exploded structure of the earphone rotation fine-tuning mechanism provided in the third embodiment of the present invention;

[0027] Fig.10 A schematic diagram of the use status of the earphone rotation fine-tuning mechanism provided in the third embodiment of the present invention;

[0028] Fig.11 A cross-sectional view of the internal structure of the earphone rotation fine-tuning mechanism provided in Embodiment 4 of the present invention;

[0029] Fig.12 This is a schematic diagram of the exploded structure of the earphone rotation fine-tuning mechanism provided in the fourth embodiment of the present invention;

[0030] Fig.13 A cross-sectional view of the internal structure of the earphone rotation fine-tuning mechanism provided in Embodiment 5 of the present invention;

[0031] Fig.14 This is a schematic diagram of the exploded structure of the earphone rotation fine-tuning mechanism provided in Embodiment 5 of the present invention;

[0032] Fig.15 A cross-sectional view of the internal structure of the headphone rotation fine-tuning mechanism provided in Embodiment 6 of the present invention;

[0033] Fig.16 This is a schematic diagram of the exploded structure of the headphone rotation fine-tuning mechanism provided in Example 6 of the present invention.

[0034] Among them, the reference numerals in the figure are:

[0035] 1-headphone headband; 2-first swing arm seat; 3-ear shell support arm; 4-second swing arm seat; 5-adjustment through hole; 501-center hole body; 502-button ring groove; 503-insert block slot; 6-self-reset control structure; 601-adjustment rod; 602-control button; 6021-button limit block; 6022-button surface block; 603-elastic element; 6031-first reset spring; 6032-second reset spring; 604-limiting cap; 7-clutch structure; 701-clutch insert; 7011-insert block body; 7012-insert block limit protrusion; 8-limiting protrusion structure; 801-first limit protrusion ring; 802-second limit protrusion ring; 9-connecting sleeve; 10-block; 11-slot end cover; 12-positioning protrusion ring; 13-positioning ring groove; 14-limiting groove DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0040] Please also read Figures 1 to 16 The headphone rotation fine-adjustment mechanism provided by the present invention is now described. The headphone rotation fine-adjustment mechanism comprises a first swing arm seat 2 for connecting with the headphone headband 1, a second swing arm seat 4 for connecting with the ear shell support arm 3 and having one end rotatably connected with one end of the first swing arm seat 2, an adjustment through hole 5 penetrating the first swing arm seat 2 and the second cantilever seat 4, a self-resetting adjustment structure 6 disposed in the adjustment through hole 5 and capable of sliding along the axial direction of the adjustment through hole 5, and a clutch structure 7 connected to one end of the self-resetting adjustment structure 6 and plugged into one end of the adjustment through hole 5 and capable of locking along the radial direction of the adjustment through hole 5.

[0041] It should be noted that the rotation between the first swing arm seat 2 and the second swing arm seat 4 can only be achieved under unlocking conditions.

[0042] The first swing arm seat 2 and the second swing arm seat 4 are connected to the headphone headband 1 and the ear shell support arm 3 respectively. Since the first swing arm seat 2 and the second swing arm seat 4 are rotatably connected, the ear shell support arm 3 and the headphone headband 1 can also be rotatably connected. The adjustment through hole 5 is actually two interconnected through hole structures located in the first swing arm seat 2 and the second swing arm seat 4 respectively. By controlling the sliding of the self-resetting adjustment structure 6 in the adjustment through hole 5 to drive the sliding of the clutch structure 7, it is possible to control whether the clutch structure 7 is plugged into the adjustment through hole 5. In the free state, the clutch structure 7 is plugged into the adjustment through hole 5, and the clutch structure 7 is locked with the adjustment through hole 5 in the radial direction of the adjustment through hole 5, thereby realizing the locking of the first swing arm seat 2 and the second swing arm seat 4 through the self-resetting adjustment structure 6; in the non-plugged state, the clutch structure 7 is separated from the adjustment through hole 5 and is in a non-locked state. The first swing arm seat 2 and the second swing arm seat 4 can rotate relative to each other, thereby realizing the angle adjustment.

[0043] Compared with the prior art, the headphone rotation fine-tuning mechanism provided by the present invention ensures the flexibility of rotation adjustment and the reliability of angle fixing after adjustment. At the same time, since the main adjustment structures are located in the first swing arm seat 2 and the second swing arm seat 4, and both rely on the self-resetting adjustment structure 6 to slide along the axis of the adjustment hole 5 to drive the clutch structure 7 to approach or move away from the adjustment hole 5, thereby achieving locking and unlocking, the overall structure of the self-resetting adjustment structure 6 and the clutch structure 7 is relatively simple, and the overall structure of the headphone rotation fine-tuning mechanism is relatively compact, occupying very little space, which can effectively improve the wearing comfort and portability.

[0044] Specifically, as a specific implementation of the headphone rotation fine-adjustment mechanism provided by the present invention, each headphone generally has two ear shell arms 3. In order to facilitate use and control costs, one of the ear shell arms 3 can be connected to the headphone headband 1 through the above-mentioned headphone rotation fine-adjustment mechanism, or both ear shell arms 3 can be connected to the headphone headband 1 through the above-mentioned headphone rotation fine-adjustment mechanism. Figure 1 and Figure 4 In the embodiment shown in the figure, one of the ear shell arms 3 is preferably connected to the earphone headband 1 via the above-mentioned earphone rotation fine-adjustment mechanism.

[0045] Specifically, as a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, the headphone headband 1 and the first swing arm seat 2, as well as the ear shell support arm 3 and the second swing arm seat 4 can be set to a detachable connection such as a snap-on connection, or can be set as an integral part for more convenient processing.

[0046] For further information, please also refer to Figure 2 , Figure 3 , Figures 5 to 16As a specific embodiment of the headphone rotation fine-tuning mechanism provided by the present invention, the self-resetting adjustment structure 6 includes an adjustment rod 601 arranged in the adjustment through hole 5, a control button 602 fixed at the other end of the adjustment rod 601 and an elastic element 603 arranged on the periphery of the adjustment rod 601; the clutch structure 7 includes a clutch plug 701 arranged at one end of the adjustment rod 601; the adjustment through hole 5 includes a central hole body 501, a button ring groove 502 arranged at one end of the central hole body 501 and used to accommodate the control button 602, and a plug slot 503 arranged at the other end of the central hole body 501 and plugged with the clutch plug 701; a limiting protrusion structure 8 is provided in the middle of the central hole body 501, one end of the elastic element 603 abuts against the limiting protrusion structure 8, and the other end of the elastic element 603 abuts against the control button 602.

[0047] In the free state, the elastic element 603 makes the control button 602 located in the button ring groove 502, and the control button 602 cannot rotate on the radial surface of the button ring groove 502, the clutch plug 701 and the plug slot 503 are in a plug-in state, and the clutch plug 701 cannot rotate on the radial surface of the plug slot 503, at this time, the self-resetting control structure 6 and the clutch structure 7 jointly lock the first swing arm seat 2 and the second swing arm seat 4 to prevent relative rotation between the first swing arm seat 2 and the second swing arm seat 4, thereby fixing the angle between the ear shell support arm 3 and the headphone headband 1.

[0048] When the angle needs to be adjusted, the control button 602 is pressed to make the adjustment rod 601 drive the clutch plug 701 away from the plug slot 503. During this process, the control button 602 is always located in the button ring groove 502 and the control button 602 cannot rotate on the radial surface of the button ring groove 502. After the clutch plug 701 is separated from the plug slot 503, the locking state between the first swing arm seat 2 and the second swing arm seat 4 is released. The ear shell support arm 3 is manually moved to conveniently rotate the second swing arm seat 4 relative to the first swing arm seat 2. When the specified angle is adjusted, the control button 602 is released, and the adjustment rod 601 drives the clutch plug 701 to be reinserted into the plug slot 503 under the resetting action of the elastic element 603, and the locking between the first swing arm seat 2 and the second swing arm seat 4 is realized again, that is, one angle adjustment is completed.

[0049] The first swing arm seat 2 and the second swing arm seat 4 form a cylindrical structure, and the central axis of the adjusting through hole 5 coincides with the central axis of the cylindrical structure. The rod-shaped self-resetting regulating structure 6 and the clutch structure 7 are both located within the cylindrical structure and move along the central axis of the cylindrical structure. The structure is simple and compact, occupies a small space, has few internal components, and has a low probability of damage, thereby effectively extending the overall service life of the headphone rotation fine-tuning mechanism.

[0050] Specifically, see Figure 2 , Figure 3 , Figures 5 to 16 As a specific embodiment of the headphone rotation fine-tuning mechanism provided by the present invention, the clutch plug 701 is mounted on the adjustment rod 601. The adjustment rod 601 is a polygonal prism, one end of which is provided with an external thread for threaded connection with the control button 602, and the other end is provided with a limit cap 604 for abutting against the outer side of the clutch plug 701. The outer diameter of the limit cap 604 is greater than the outer diameter of the adjustment rod 601. Specifically, the adjustment rod 601 is a hexagonal prism component. A hexagonal through-hole structure is provided in the middle of the clutch plug 701. When installing, the clutch plug 701 is mounted on the adjustment rod 601, and the outer side of the clutch plug 701 abuts against the limit cap 604 to prevent the clutch plug 701 from falling off. At the same time, the clutch plug 701 cannot rotate around the adjustment rod 601; when the first swing arm seat 2 and the adjustment rod 601 rotate relative to each other, the clutch plug 701 also rotates relative to the first swing arm seat 2, and after the angle adjustment is completed, effective fixation can be achieved, thereby improving the stability of use.

[0051] Specifically, see Figure 2 , Figure 3 , Figures 5 to 16 As a specific embodiment of the earphone rotation fine adjustment mechanism provided by the present invention, the second rotary arm seat 4 is located in front of the first rotary arm seat 2, the button ring groove 502 is provided on the second rotary arm seat 4, and the plug slot 503 is provided on the first rotary arm seat 2. When wearing, the ear shell support arm 3 is generally moved to adjust the angle, and the finger can conveniently press the control button 602 and conveniently move the ear shell support arm 3 at the same time, which improves the convenience of use.

[0052] Specifically, see Figure 2 , Figure 5 , Figure 6 , Figure 8 , Fig.10 , go to 11, Fig.13 and Fig.15 As a specific embodiment of the earphone rotation fine adjustment mechanism provided by the present invention, the inner diameter of the button ring groove 502 is larger than the inner diameter of the central hole 501, and the inner diameter of the plug slot 503 is larger than the inner diameter of the central hole 501. This structure means that the outer diameter of the control button 602 and the outer diameter of the clutch plug 701 are both larger than the inner diameter of the central hole 501, and the control button 602 and the clutch plug 701 will not enter the central hole 501, ensuring the stability of the structure.

[0053] For further information, see Figure 2 , Figure 3 , Figures 5 to 16As a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, in order to facilitate pressing and assembly, and at the same time to achieve that the control button 602 can maintain a locked state with the button ring groove 502 in the radial direction of the button ring groove 502 in any state, the control button 602 includes a button limit block 6021 fixedly arranged at one end of the adjustment rod 601 and a button surface block 6022 fixedly arranged on the outside of the button limit block 6021 and protruding from the button ring groove 502, the button limit block 6021 is a polygonal prism component, and the button ring groove 502 is a polygonal groove matching the button limit block 6021.

[0054] The end of the adjusting rod 601 is provided with an external thread. When assembling, the button limit block 6021 is firstly mounted on the end of the adjusting rod 601, and then the button face block 6022 is tightened on the end to limit and clamp the button limit block 6021. The structure is simple, the use stability is good, the replacement is convenient, and the maintenance cost is low.

[0055] Furthermore, as a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, a limiting unit for limiting the rotation angle is provided between the clutch plug 701 and the plug slot 503, so that the clutch plug 701 and the plug slot 503 can only be positioned at multiple specified angles, that is, multiple angle adjustment gears are provided, which ensures stability in use while also improving the flexibility of angle adjustment.

[0056] Specifically, see Figure 2 , Figure 3 and Figure 5 As a specific embodiment of the headphone rotation fine-tuning mechanism provided by the present invention, the clutch plug 701 is a polygonal prism component. Specifically, it is a hexagonal prism, and the plug slot 503 corresponds to a hexagonal slot. When the clutch plug 701 is inserted into the plug slot 503, it can effectively ensure that the clutch plug 701 is locked in the radial direction of the plug slot 503; at the same time, six angle adjustment gears are provided, so that the clutch plug 701 and the plug slot 503 can only be positioned at a specified angle.

[0057] Specifically, see Figure 6 and Figure 7 As a specific embodiment of the headphone rotation fine-tuning mechanism provided by the present invention, the clutch plug 701 is a plum blossom-shaped columnar member. The plug slot 503 corresponds to a plum blossom-shaped slot. When the clutch plug 701 is inserted into the plug slot 503, it can effectively ensure that the clutch plug 701 is locked in the radial direction of the plug slot 503; at the same time, five to six angle adjustment gears are provided, so that the clutch plug 701 and the plug slot 503 can only be positioned at a specified angle.

[0058] For further information, see Figures 8 to 16As a specific embodiment of the earphone rotation fine-tuning mechanism provided by the present invention, the clutch plug 701 includes a plug body 7011 and at least one plug limiting protrusion 7012 provided on the inner end surface of the plug body 7011, and at least one limiting groove 14 for accommodating the plug limiting protrusion 7012 and corresponding to the plug limiting protrusion 7012 is provided on the inner end surface of the plug slot 503. When the clutch plug 701 is inserted into the plug slot 503, the clutch plug 701 can be effectively locked in the radial direction of the plug slot 503; at the same time, multiple angle adjustment gears are provided, so that the clutch plug 701 and the plug slot 503 can only be positioned at a specified angle.

[0059] Specifically, see Figures 8 to 10 As a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, the plug body 7011 is a cylindrical component, and the plug limiting protrusion 7012 is a plurality of straight tooth protrusions evenly distributed in a ring shape on the plug body 7011.

[0060] Specifically, see Fig.11 and Fig.12 As a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, the plug body 7011 is a cylindrical component, and the plug limiting protrusion 7012 is a plurality of herringbone tooth protrusions evenly distributed in a ring shape on the plug body 7011.

[0061] Specifically, see Fig.13 and Fig.14 As a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, the plug body 7011 is a cylindrical component, and the plug limiting protrusion 7012 is a plurality of arc-shaped tooth protrusions evenly distributed on the plug body 7011 in a ring shape.

[0062] Specifically, see Fig.15 and Fig.16 As a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, the plug-in block limiting protrusion 7012 is a plurality of cylindrical protrusions with spherical free end surfaces evenly distributed in a ring shape on the plug-in block body 7011.

[0063] Further, see Figure 2 , Figure 3 , Figures 5 to 16 As a specific embodiment of the headphone rotation fine adjustment mechanism provided by the present invention, the elastic element 603 includes a first reset compression spring 6031 which is sleeved on the outer periphery of the adjustment rod 601 and whose two ends are respectively abutted against the button limit block 6021 and the limit protrusion structure 8. The spring has a simple structure, low use cost, small space occupation, and good reset effect, which is conducive to making the overall structure simpler and more compact, and at the same time prolonging the service life.

[0064] For further information, see Figure 2 , Figure 3 , Figures 5 to 16 As a specific embodiment of the earphone rotation fine-tuning mechanism provided by the present invention, the limiting protrusion structure 8 includes a first limiting protrusion ring 801 provided at one end of the first swing arm seat 2 and a second limiting protrusion ring 802 provided at one end of the second swing arm seat 4 and in contact with the first limiting protrusion ring 801; one end of the first return compression spring 6031 abuts against the button limit block 6021, and the other end of the first return compression spring 6031 abuts against the first limiting protrusion ring 801 or the second limiting protrusion ring 802. The two limiting protrusion rings are respectively provided on the first swing arm seat 2 and the second swing arm seat 4, providing a force application platform for the elastic element 603, and also enabling a more stable rotation between the first swing arm seat 2 and the second swing arm seat 4.

[0065] Specifically, the above-mentioned limiting groove 14 is arranged on the outer side surface of the first limiting protruding ring 801 .

[0066] For further information, see Figure 2 , Figure 3 , Figures 5 to 7 As a specific embodiment of the earphone rotation fine-tuning mechanism provided by the present invention, the elastic element 603 further includes a second return spring 6032 sleeved on the outer periphery of the adjustment rod 601, one end of the second return spring 6032 abuts against the clutch plug 701, and the other end of the second return spring 6032 abuts against the first limiting convex ring 801 or the second limiting convex ring 802. The main function of the second return spring 6032 is to prevent the clutch block 701 from sliding relative to the adjustment rod 601 along the radial direction of the adjustment rod 601, so as to ensure that the clutch block 701 can move away from or close to the plug slot 503 as the control button 602 is pressed.

[0067] Specifically, see Figure 2 , Figure 3 , Figures 5 to 16 As a specific implementation of the headphone rotation fine-tuning mechanism provided by the present invention, in order to improve assembly efficiency and prevent the first swing arm seat 2 and the second swing arm seat 4 from being misaligned during rotation, a positioning convex ring 12 is provided at one end of the first swing arm seat 2, and a positioning ring groove 13 that cooperates with the positioning convex ring 12 is provided at one end of the second swing arm seat 4.

[0068] Further, see Figure 2 , Figure 5 , Figure 6 , Figure 8 , Fig.10 , go to 11, Fig.13 and Fig.15As a specific embodiment of the earphone rotation fine adjustment mechanism provided by the present invention, the inner sides of the first limiting convex ring 801 and the second limiting convex ring 802 are further provided with a connecting sleeve 9 for clamping and fixing the first limiting convex ring 801 and the second limiting convex ring 802 in the axial direction of the adjustment through hole 5, and the connecting sleeve 9 is sleeved on the outer periphery of the adjustment rod 601. Both ends of the connecting sleeve 9 are provided with protrusions, which can respectively clamp the outer side surfaces of the first limiting convex ring 801 and the second limiting convex ring 802, thereby playing an effective clamping role, preventing the first swing arm seat 2 and the second swing arm seat 4 from being misaligned or falling off. At the same time, since the size of the protrusions is limited to a certain range, it will not affect the installation of the connecting sleeve 9.

[0069] For further information, see Figure 2 , Figure 3 , Figures 5 to 7 As a specific embodiment of the earphone rotation fine adjustment mechanism provided by the present invention, in order to ensure the sealing of the structure in the free state, a blocking piece 10 is fixedly connected to the outer end surface of the clutch plug 701, which is in contact with the outer end surface of the plug slot 503 and is used to block the plug slot 503. In the free state, the blocking piece 10 and the control button 602 respectively seal the two ends of the adjustment through hole 5, effectively protecting the internal components and playing a role in dust and water resistance.

[0070] For further information, see Figures 8 to 16 As a specific embodiment of the headphone rotation fine-tuning mechanism provided by the present invention, an end cap 11 for sealing the plug-in slot 503 is further provided at the end of the plug-in slot 503. The end cap 11 can ensure the sealing of the plug-in slot 503 in any state, effectively protect the internal components, play a role of dust and water resistance, and also play a decorative role, making the appearance of the headphone rotation fine-tuning mechanism more beautiful.

[0071] See also Figure 1 and Figure 4 The present invention also provides an earphone, which includes an earphone headband 1, an ear shell arm 3 and the above-mentioned earphone rotation fine-adjustment mechanism connected to the earphone headband 1 and the ear shell arm 3 respectively.

[0072] The earphones provided by the present invention, by adopting the earphone rotating fine-tuning mechanism with simple and compact structure and reliable adjustment and fixing effect, can make the overall structure of the earphones simpler and lighter while ensuring the comfort of using the earphones, thereby further improving the comfort and portability of wearing.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Earphone rotation fine-tuning mechanism, characterized by: The earphone comprises a first swing arm seat for connecting to the headband of the earphone, a second swing arm seat for connecting to the ear shell support arm and having one end rotatably connected to one end of the first swing arm seat, an adjustment through hole penetrating the first swing arm seat and the second swing arm seat, a self-resetting regulating structure arranged in the adjustment through hole and capable of sliding along the axial direction of the adjustment through hole, and a clutch structure connected to one end of the self-resetting regulating structure and plugged into one end of the adjustment through hole and capable of locking along the radial direction of the adjustment through hole; the first swing arm seat and the second swing arm seat form a cylindrical structure, and the central axis of the adjustment through hole coincides with the central axis of the cylindrical structure; the clutch structure comprises Clutch plug; the self-resetting control structure includes an adjustment rod arranged in the adjustment through hole, a control button fixed at the other end of the adjustment rod and an elastic element arranged on the outer periphery of the adjustment rod, and the clutch plug is arranged at one end of the adjustment rod; the adjustment through hole includes a central hole body, a button ring groove arranged at one end of the central hole body and used to accommodate the control button, and a plug slot arranged at the other end of the central hole body and connected with the clutch plug; a limiting protrusion structure is provided in the middle of the central hole body, one end of the elastic element abuts against the limiting protrusion structure, and the other end of the elastic element abuts against the control button.

2. The headphone rotation fine-tuning mechanism according to claim 1, characterized in that: The control button includes a button limit block fixed to one end of the adjustment rod and a button surface block fixed to the outside of the button limit block and protruding from the button ring groove. The button limit block is a polygonal prism component, and the button ring groove is a polygonal groove that cooperates with the button limit block.

3. The headphone rotation fine-tuning mechanism according to claim 2, characterized in that: The elastic element comprises a first return compression spring which is sleeved on the outer circumference of the adjusting rod and has two ends respectively abutting against the button limiting block and the limiting protrusion structure.

4. The headphone rotation fine-tuning mechanism according to claim 3, characterized in that: The limiting protrusion structure includes a first limiting protrusion ring arranged at one end of the first swing arm seat and a second limiting protrusion ring arranged at one end of the second swing arm seat and contacting and cooperating with the first limiting protrusion ring; one end of the first return compression spring abuts against the button limiting block, and the other end of the first return compression spring abuts against the first limiting protrusion ring or the second limiting protrusion ring.

5. The headphone rotation fine-tuning mechanism according to claim 4, characterized in that: The elastic element also includes a second return compression spring sleeved on the outer circumference of the adjustment rod, one end of the second return compression spring abuts against the clutch plug, and the other end of the second return compression spring abuts against the first limiting convex ring or the second limiting convex ring.

6. The headphone rotation fine-tuning mechanism according to claim 4, characterized in that: The inner sides of the first limiting protrusion ring and the second limiting protrusion ring are also provided with a connecting sleeve for clamping and fixing the first limiting protrusion ring and the second limiting protrusion ring in the axial direction of the adjusting through hole, and the connecting sleeve is sleeved on the outer periphery of the adjusting rod.

7. The headphone rotation fine-tuning mechanism according to claim 1, characterized in that: A blocking piece is also fixedly connected to the outer end surface of the clutch plug-in block, which abuts against the outer end surface of the plug-in block slot and is used to block the plug-in block slot.

8. The headphone rotation fine-tuning mechanism according to claim 1, characterized in that: An end cover for sealing the plug-in slot is also provided at the end of the plug-in slot.

9. Earphones, characterized in that: The invention comprises the headphone headband, the ear shell support arm and the headphone rotation fine-adjustment mechanism as described in any one of claims 1 to 8 which is respectively connected to the headphone headband and the ear shell support arm.

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