A kind of rebound connecting device applied to clip-on bluetooth earphone

Abstract

The utility model relates to earphone technical field especially relates to a kind of application to the resilient connecting device of clip-on bluetooth earphone, including C-shaped bridge main body, the elastic support beam group embedded in the inside of the C-shaped bridge main body and with the C-shaped bridge main body integral moulding engraves antenna contact platform, the bridge body of the C-shaped bridge main body is the cross-sectional area of two ends greater than the cross-sectional area of middle section gradually tapered structure of waist, to enhance the connection strength of C-shaped bridge main body and its two ends earphone part;The elastic support beam group includes 2 elastic support beams of symmetrical distribution along bending axis, for single elastic support beam, it is composed of 2 mutually intersecting arc reinforcing bars, to enhance resilience;The engraves antenna contact platform is arranged at the two ends of C-shaped bridge main body, to arrange the end contact of engraves antenna. The present application makes the structure resilience of clip-on earphone evenly distributed, simultaneously compatible sound guide pipe structure and engraves antenna.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a spring-loaded connection device for use in clip-on Bluetooth headphones. Background Technology

[0002] Clip-on headphones are a type of open-back headphone. Users often experience ear canal pain and ear stuffiness when wearing in-ear headphones for extended periods, and prolonged wear can also easily lead to otitis media. Clip-on headphones, on the other hand, clip the earphone onto the auricle, making them a good choice for users who experience ear discomfort from wearing headphones for long periods.

[0003] Chinese Patent Publication No. CN117692841A discloses an ear clip-on earphone and earphone assembly, including a front shell with a sound cavity, a rear shell with a battery cavity, and a double-curved arm clamp connecting the two. The double-curved arm clamp includes an independently set upper arm and a lower arm. The upper arm and the lower arm have the same natural curvature, and the cross-sectional dimension of the upper arm is larger than that of the lower arm. Both the upper arm and the lower arm are provided with memory steel wires extending from the front cavity to the rear cavity, and the diameter of the memory steel wire in the upper arm is larger than that in the lower arm. The double-curved arm clamp uses two silicone rods with memory steel wires inside.

[0004] Therefore, the above-mentioned ear clip-on headphones and headphone components have the following problems: The double-curved arm clamp uses two silicone rods and their internal memory steel wires as rebound components for support and clamping. The distribution of its rebound force is not precisely configured. If the user exercises vigorously during use, the headphones are very easy to fall off. Furthermore, long-term use or improper pulling and twisting will reduce its rebound performance, resulting in a poorer ear-clamping effect and affecting the user experience. At the same time, its structural design is relatively simple and difficult to be compatible with the currently popular sound tube structure and laser-engraved antenna technology. Utility Model Content

[0005] Therefore, this utility model provides a spring-loaded connection device for clip-on Bluetooth earphones to overcome the problems of uneven distribution of spring force in existing clip-on earphone structures and incompatibility with sound tube structures and laser-engraved antennas.

[0006] To achieve the above objectives, this utility model provides a spring-loaded connection device for clip-on Bluetooth headsets, comprising a C-shaped bridge body, an elastic support beam assembly embedded within the C-shaped bridge body, and a laser-engraved antenna contact platform integrally formed with the C-shaped bridge body, wherein...

[0007] The main body of the C-shaped bridge has a gradually tapering waist structure with the cross-sectional area at both ends being larger than that in the middle section, in order to enhance the connection strength between the main body of the C-shaped bridge and the headphone parts at both ends.

[0008] The elastic support beam group includes two elastic support beams symmetrically distributed along the bending axis. For a single elastic support beam, it consists of two intersecting arc-shaped reinforcing ribs to enhance the resilience.

[0009] The laser-engraved antenna contact platform is located at both ends of the C-shaped bridge body to arrange the end contacts of the laser-engraved antenna.

[0010] Furthermore, the cross-sections at both ends of the C-shaped bridge body are triangular in shape with the apex facing the inside of the C-shaped bridge body, in order to increase the strength of the C-shaped bridge body.

[0011] Furthermore, the middle section of the arc-shaped reinforcing rib in the elastic support beam group forms an X-shaped intersection node to improve the stability of the rebound torque; its intersection angle gradually increases from the middle section to both ends to form a gradient rebound force distribution.

[0012] Furthermore, the outer contour of the C-shaped bridge body is a wavy curved surface, with the crest area corresponding to the X-shaped intersection node of the elastic support beam group, in order to form alternating rigid support sections and elastic deformation sections.

[0013] Furthermore, the crest region of the wavy surface is a hollow structure, which is elliptical, and its major axis is aligned with the extension direction of the C-shaped bridge body to reduce local stress concentration.

[0014] Furthermore, the C-shaped bridge body has a hollow structure in the middle along the bending axis to avoid the sound guide tube. A sound guide tube channel is provided from the end of the hollow structure to the end of the C-shaped bridge body to fix the sound guide tube. The opening of the sound guide tube channel is provided with an outwardly expanding trumpet-shaped guide port.

[0015] Furthermore, the inner side of the horn-shaped guide opening is provided with an annular elastic anti-detachment flange to limit the radial displacement of the sound guide tube.

[0016] Furthermore, the two ends of the C-shaped bridge body also include small ball fastening parts for fastening and connecting with small ball housings on which sound-generating components are provided, and large ball fastening parts for fastening and connecting with large ball housings on which motherboards and batteries are provided.

[0017] Furthermore, the laser-engraved antenna contact platform includes an umbrella-shaped portion disposed on the opposite side of the small ball fastening portion for arranging the end contacts of the laser-engraved antenna, and a boss portion disposed on the opposite side of the large ball fastening portion for arranging the end contacts of the laser-engraved antenna.

[0018] Furthermore, the C-shaped bridge body also includes a partition plate connected to the boss portion 42 for mounting the battery and the motherboard.

[0019] Compared with the prior art, the beneficial effects of this utility model are that, through the combination design of the gradually tapered waist structure and the triangular cross section, the bending stiffness of the C-shaped bridge body is improved while ensuring its lightweight; at the same time, the uniformity of the ear contact stress distribution is improved, avoiding local pressure and reducing the ear pulling force when putting on and taking off the ear.

[0020] Furthermore, this invention forms a non-uniform stiffness structure by using the X-shaped cross nodes of the elastic support beam group in combination with the gradient cross angle, so that the rebound force smoothly transitions from the middle section (high rebound force) to both ends (low rebound force) along the bridge axis. The high rebound force responds quickly to deformation, while the low rebound force provides extension and buffering, so that the device maintains a high initial rebound performance after deformation cycles during long-term use.

[0021] Furthermore, this invention features an alternating distribution of rigid support sections and elastic deformation sections on a wave-shaped curved surface. The rigid support sections maintain clamping stability, while the elastic deformation sections absorb the impact force generated by compression and displacement during the use of the headphones, making the headphones less likely to fall off in various usage scenarios.

[0022] Furthermore, this invention reduces the peak value of concentrated stress by using an elliptical hollow structure in the crest region, thereby enhancing the reliability of the rigid support section in the middle under excessive force.

[0023] Furthermore, this invention utilizes the horn-shaped guide opening of the sound guide tube channel and the annular elastic anti-detachment flange in synergy to reduce the vibration amplitude of the sound guide tube through axial anti-detachment and radial adaptive reduction, thereby reducing the sound distortion rate.

[0024] Furthermore, this utility model integrates a snap-fit ​​part, a laser-engraved antenna contact platform, and a partition plate for the battery / motherboard compartment into the spring-loaded connecting device, adapting to differentiated production needs and improving the utilization rate of internal space. Attached Figure Description

[0025] Figure 1 This is a perspective view of a spring-loaded connection device applied to a clip-on Bluetooth headset according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the elastic support beam assembly of the spring-loaded connection device applied to clip-on Bluetooth earphones according to an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional view of the spring-loaded connection device applied to a clip-on Bluetooth headset according to an embodiment of the present invention;

[0028] Figure 4 This is an enlarged view of part A of the spring-loaded connection device applied to a clip-on Bluetooth headset according to an embodiment of the present invention;

[0029] In the diagram: 1-C-shaped bridge body; 21-arc-shaped reinforcing rib; 22-X-shaped intersection node; 31-small ball fastening part; 32-large ball fastening part; 41-umbrella-shaped part; 42-protrusion part; 43-partition plate; 5-wave crest area; 61-sound guide tube channel; 62-trumpet-shaped guide port; 63-annular anti-detachment flange. Detailed Implementation

[0030] To make the objectives and advantages of this utility model clearer, the present utility model will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0031] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0032] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] This utility model embodiment provides an antenna connection structure for a clip-on Bluetooth headset. Please refer to [link / reference]. Figure 1 and Figure 2 The diagram shows a perspective view of the antenna connection structure of a clip-on Bluetooth headset according to an embodiment of the present invention, and a schematic diagram of the elastic support beam assembly of the spring-loaded connection device applied to a clip-on Bluetooth headset according to an embodiment of the present invention.

[0035] This embodiment provides a spring-loaded connection device for clip-on Bluetooth headphones, comprising:

[0036] The C-shaped bridge body 1, the elastic support beam assembly embedded inside the C-shaped bridge body 1, and the laser-engraved antenna contact platform connected to the outer surface of the C-shaped bridge body 1, wherein,

[0037] The C-shaped bridge body 1 has a gradually tapering waist structure with the cross-sectional area at both ends being larger than that in the middle section, in order to enhance the connection strength between the C-shaped bridge body 1 and the headphone parts at both ends.

[0038] The elastic support beam group includes two elastic support beams symmetrically distributed along the C-shaped bending axis of the C-shaped bridge body. For a single elastic support beam, it consists of two intersecting arc-shaped reinforcing ribs 21 to enhance the resilience.

[0039] The laser-engraved antenna contact platform is set at both ends of the C-shaped bridge body 1 to arrange the end contacts of the laser-engraved antenna.

[0040] In implementation, the C-shaped bridge body 1 is a polymer composite material, preferably TPU material; the arc-shaped reinforcing rib 21 is a metal matrix composite material, preferably titanium-nickel shape memory alloy wire.

[0041] In practice, the laser-engraved antenna contact platform and the C-shaped bridge body 1 are integrally formed, and the turning point of the laser-engraved antenna contact platform is transitioned by an arc structure to ensure the performance of the laser-engraved antenna.

[0042] Specifically, the cross-sections at both ends of the C-shaped bridge body 1 are triangular curves with their apexes facing inwards towards the C-shaped bridge body 1, in order to increase the strength of the C-shaped bridge body 1.

[0043] In implementation, the triangular cross-sections at both ends of the C-shaped bridge body 1 are isosceles triangles (the corners of the triangles are transitioned by curves / circular arcs), with the base angle preferably being 45-55° and the apex pointing inward toward the central axis of the bridge body's curvature; the long side of the triangular cross-section is parallel to the auricle contact surface.

[0044] Understandably, the triangular cross-section forms a stable support surface through the base, and the stress in the vertex area is dispersed to the two sides of the inclined plane, which improves the bending stiffness of the bridge. When the headphone is subjected to lateral force, the triangular inclined plane converts the shear force into compressive stress, which, together with the elastic support beam group, realizes multi-directional force bearing.

[0045] Specifically, the middle section of the arc-shaped reinforcing rib 21 in the elastic support beam group forms an X-shaped intersection node 22 to improve the stability of the rebound torque; its intersection angle gradually increases from the middle section to both ends to form a gradient rebound force distribution.

[0046] In practice, the intersection angle of the arc-shaped reinforcing ribs 21 gradually increases from the middle section to both ends, with the middle section angle preferably being 20° to 30° and the two ends angle preferably being 80° to 90°.

[0047] Understandably, the small-angle intersection in the middle section forms a high-stiffness area, providing the main rebound torque; the stiffness decreases at both ends with large angles, allowing for greater elastic deformation; the angle change causes deformation energy to be released gradually from the middle to both ends, with the small-angle area in the middle preferentially resisting the pressure in the concha and responding quickly to deformation (high rebound force); the large-angle areas at both ends adapt to the natural curvature of the helix crus, providing extended buffer (low rebound force) and avoiding sudden torque during rebound.

[0048] Specifically, the outer contour of the C-shaped bridge body 1 is a wavy curved surface, and the crest region 5 corresponds to the X-shaped intersection node 22 of the elastic support beam group, which is used to form an alternating distribution of rigid support section and elastic deformation section.

[0049] In practice, the wave crest region 5 of the wavy surface preferably has a wave crest height of 1 to 1.2 mm, a wave crest curvature radius of 3 to 4 mm, and the axial deviation between the apex of the wave crest and the center of the X-shaped intersection node is less than 0.1 mm.

[0050] It is understandable that the crest region 5 corresponds to the X-shaped intersection node 22 to form a rigid support unit, and its protruding structure improves the local compressive strength; the trough region opposite the C-shaped bridge body 1 reduces stiffness through a large radius of curvature, forming a directional deformation zone; the alternating crests and troughs cause the bridge body to produce a segmented deformation response when under pressure, the rigid section maintains the clamping force, and the elastic section absorbs the impact force generated by compression and displacement during the use of the headphones.

[0051] Specifically, the crest region 5 of the wavy surface has a hollow structure inside. The hollow structure is elliptical, and its major axis is aligned with the extension direction of the C-shaped bridge body 1 to reduce local stress concentration.

[0052] In practice, the hollow structure of the crest region 5 preferably has a hole wall thickness of 0.2 to 0.5 mm.

[0053] It is understandable that the hollow structure removes the material in the high-stress area at the center of the wave crest, making the stress evenly distributed along the hole wall; the major axis of the elliptical hole follows the direction of the principal stress, thus reducing the peak stress.

[0054] Please continue reading Figure 3 The figure shown is a cross-sectional view of the spring-loaded connection device of the present invention applied to a clip-on Bluetooth headset according to an embodiment of the present invention.

[0055] Specifically, the C-shaped bridge body has a hollow structure in the middle along the bending axis to avoid the sound guide tube. A sound guide tube channel 61 is provided from the end of the hollow structure to the end of the C-shaped bridge body to fix the sound guide tube. The opening of the sound guide tube channel is provided with an outwardly expanding trumpet-shaped guide port 62.

[0056] Please continue reading Figure 4As shown, it is an enlarged view of part A of the spring-loaded connection device applied to the ear clip Bluetooth headset according to an embodiment of the present invention;

[0057] Specifically, the inner side of the horn-shaped guide port 62 is provided with an elastic annular anti-detachment flange 63 to limit the radial displacement of the sound guide tube.

[0058] Specifically, the two ends of the C-shaped bridge body 1 also include a small ball fastening part 31 for fastening and connecting with a small ball shell on which a sound-generating component is provided, and a large ball fastening part 32 for fastening and connecting with a large ball shell on which a motherboard and a battery are provided.

[0059] In practice, the small ball fastening part 31 and the large ball fastening part 32 adopt a hook-shaped cantilever buckle structure and are integrally formed with the C-shaped bridge body 1.

[0060] Specifically, the laser-engraved antenna contact platform includes an umbrella-shaped portion 41 disposed on the opposite side of the small ball fastening portion for arranging the end contacts of the laser-engraved antenna, and a boss portion 42 disposed on the opposite side of the large ball fastening portion for arranging the end contacts of the laser-engraved antenna.

[0061] Specifically, the C-shaped bridge body also includes a partition plate 43 connected to the boss portion 42 for mounting the battery and the motherboard.

[0062] Work process:

[0063] The end contacts and antenna portion of the laser-engraved antenna are arranged on the outer side of the umbrella-shaped portion 41, the boss portion 42, and the C-shaped bridge 1 using laser engraving technology; the sound guide tube passes through the hollow structure in the middle of the C-shaped bridge 1, and is inserted into the sound guide tube channel 61 through the horn-shaped guide port 62; the annular elastic anti-detachment flange 63 clamps the outer wall of the sound guide tube through radial deformation; the sound-generating component is embedded in the small spherical shell and connected to the end contacts of the laser-engraved antenna; the main board and battery are installed in the large spherical shell and connected to the end contacts of the laser-engraved antenna; the small spherical shell and the large spherical shell are pressed and snapped together by the snap-fit ​​structure at both ends of the C-shaped bridge body.

[0064] When in use, the user holds the large spherical shell and aligns the curved opening of the C-shaped bridge body 1 with the auricle. The small spherical shell naturally fits the concha cavity, and the large spherical shell is suspended behind the helix. The gradually tapering waist structure in the middle section bends first, the X-shaped cross node provides the main rebound force, the rigid section of the wave-shaped curved surface contacts the auricle, and the elastic section of the trough absorbs excess pressure, achieving "clamping without hurting the ear".

[0065] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A spring-loaded connection device for use in clip-on Bluetooth earphones, characterized in that, It includes a C-shaped bridge body, an elastic support beam assembly embedded inside the C-shaped bridge body, and a laser-engraved antenna contact platform integrally formed with the C-shaped bridge body, wherein, The main body of the C-shaped bridge has a gradually tapering waist structure with the cross-sectional area at both ends being larger than that in the middle section, in order to enhance the connection strength between the main body of the C-shaped bridge and the headphone parts at both ends. The elastic support beam group includes two elastic support beams symmetrically distributed along the bending axis. For a single elastic support beam, it consists of two intersecting arc-shaped reinforcing ribs to enhance the resilience. The laser-engraved antenna contact platform is located at both ends of the C-shaped bridge body to arrange the end contacts of the laser-engraved antenna.

2. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 1, characterized in that, The cross-sections at both ends of the C-shaped bridge body are triangular in shape with the apex facing the inside of the C-shaped bridge body, in order to increase the strength of the C-shaped bridge body.

3. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 1, characterized in that, The middle section of the arc-shaped reinforcing rib in the elastic support beam group forms an X-shaped intersection node to improve the stability of the rebound moment. Its intersection angle gradually increases from the middle section to both ends to form a gradient rebound force distribution.

4. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 3, characterized in that, The outer contour of the C-shaped bridge body is a wavy curved surface, with the crest area corresponding to the X-shaped intersection node of the elastic support beam group, which is used to form an alternating distribution of rigid support sections and elastic deformation sections.

5. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 4, characterized in that, The crest region of the wavy surface is a hollow structure, which is elliptical in shape, and its major axis is aligned with the extension direction of the C-shaped bridge body to reduce local stress concentration.

6. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 1, characterized in that, The C-shaped bridge body has a hollow structure in the middle along the bending axis to avoid the sound guide tube. A sound guide tube channel is provided from the end of the hollow structure to the end of the C-shaped bridge body to fix the sound guide tube. The opening of the sound guide tube channel is provided with an outwardly expanding horn-shaped guide port.

7. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 3, characterized in that, The inner side of the horn-shaped guide opening is provided with an annular elastic anti-detachment flange to limit the radial displacement of the sound guide tube.

8. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 1, characterized in that, The two ends of the C-shaped bridge body also include small ball fastening parts for fastening and connecting with small ball shells on which sound-generating components are provided, and large ball fastening parts for fastening and connecting with large ball shells on which the motherboard and battery are provided.

9. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 8, characterized in that, The laser-engraved antenna contact platform includes an umbrella-shaped portion disposed on the opposite side of the small ball fastening portion for arranging the end contacts of the laser-engraved antenna, and a boss portion disposed on the opposite side of the large ball fastening portion for arranging the end contacts of the laser-engraved antenna.

10. The spring-loaded connection device for clip-on Bluetooth earphones according to claim 9, characterized in that, The C-shaped bridge body also includes a partition plate connected to the boss portion 42 for mounting the battery and the motherboard.

Images