Turnover structure and earphone box
By using a flip-up structure design, deformation space is provided to avoid stress concentration in the flexible conductive structure, thus solving the problems of mechanical fatigue and fracture damage in the headphone case and improving electrical performance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN GRANDSUN ELECTRONICS CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-12
AI Technical Summary
The flexible conductive structure of existing headphone cases is prone to stress concentration during opening and closing, leading to mechanical fatigue or fracture damage, which affects electrical performance and service life.
By adopting a flip structure and designing the first and second channels, deformation space is provided, allowing the flexible conductive structure to adapt to deformation during rotation, avoiding stress concentration, and forming a gently bending structure.
This reduces the probability of mechanical fatigue or fracture damage to the flexible conductive structure, and improves the electrical performance stability and service life of the headphone case.
Smart Images
Figure CN224233817U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic equipment technology, and in particular to a flip structure and an earphone case. Background Technology
[0002] In related technologies, an FPC (Flexible Printed Circuit Board) can be installed at the rotating connection between the headphone case body and the lid to achieve electrical connection between electrical components on the case body and the lid. However, the opening and closing actions repeatedly apply bending stress to the FPC, and this bending stress is concentrated at the gap between the case body and the lid, resulting in a small radius of curvature. Furthermore, to ensure a proper opening angle for the lid, the included angle between the two parts formed by the bending of the FPC may be less than 90° or even reach 0°, which can easily cause mechanical fatigue or fracture damage to the FPC, thereby affecting the electrical performance and lifespan of the headphone case. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a flipping structure that can avoid stress concentration on the flexible conductive structure, reduce the probability of mechanical fatigue or fracture damage to the flexible conductive structure, and improve the stability and service life of the headphone case's electrical performance.
[0004] This utility model also provides an earphone case with the above-mentioned flip structure.
[0005] In a first aspect, embodiments of this application provide a flipping structure, including:
[0006] A first hinge seat is used to connect with the box body, and the first hinge seat has a first channel communicating with the inner cavity of the box body;
[0007] A second hinge seat is used to connect to the lid. The second hinge seat is rotatably connected to the first hinge seat. The second hinge seat rotates to cause the lid to close or open the box body. The second hinge seat has a second channel. The second channel and the first channel are used to sequentially pass through a flexible conductive structure for powering the lid and the box body. The second channel has a first end and a second end. The first end communicates with the inner cavity of the lid. Within the rotation stroke of the second hinge seat, the projection of the second end along the extension direction of the first channel is located within the cross-sectional boundary of the first channel, so that the second end pushes the flexible conductive structure to swing within the first channel when the second hinge seat rotates.
[0008] The flip structure according to this utility model embodiment has at least the following beneficial effects: the first channel provides a deformation space, and when the second hinge seat rotates, the flexible conductive structure can adaptively deform the portion of the structure from the second end to the end extending into the inner cavity of the housing. The deformation range is no longer limited to the slit between the housing and the lid, but extends to the first channel with a first height; and the flexible conductive structure can automatically adjust its shape according to the space of the first channel and its own stress, forming a gentle bending structure instead of a sharp angle. This avoids stress concentration on the flexible conductive structure, reduces the probability of mechanical fatigue or fracture damage, and improves the stability and service life of the headphone case's electrical performance.
[0009] According to the first aspect, in one possible implementation, the second hinge seat has a first position and a second position, and the second hinge seat rotates to switch to the first position or the second position;
[0010] When the second hinge is in the first position, the lid closes the box body, and the extending direction of the second channel intersects the extending direction of the first channel; and / or,
[0011] When the second hinge seat is in the second position, the box cover opens the box body, and the second end is positioned toward or within the first channel.
[0012] According to the first aspect, in one possible implementation, the second channel has a first sidewall and a second sidewall disposed opposite to each other;
[0013] When the second hinge seat is in the first position, the first sidewall is located on the side of the second sidewall facing the first channel; and along the first direction, the distance between the portion of the first sidewall near the second end and the first channel decreases and forms a smooth transition surface; the first direction is the direction from the first end to the second end.
[0014] According to the first aspect, in one possible implementation, the second hinge seat includes a stop portion protruding from the second end, the stop portion having a stop surface that is coplanar with the second sidewall.
[0015] According to the first aspect, in one possible implementation, the first hinge seat has a first connecting portion, the second hinge seat has a second connecting portion, and the flipping structure further includes an elastic element, one end of which is connected to the first connecting portion and the other end of which is connected to the second connecting portion;
[0016] When the second hinge seat is in the first position and the second position, the elastic element is in a compressed state.
[0017] According to the first aspect, in one possible implementation, the first hinge seat further includes a first limiting portion, a first movable space is formed between the first limiting portion and the first connecting portion, a portion of the elastic member is housed within the first movable space, and the first limiting portion is used to stop the elastic member to limit the deformation range of the elastic member.
[0018] According to the first aspect, in one possible implementation, the sidewalls of the first active space form a limiting groove, and the elastic element is configured to compress and deform when the second hinge seat rotates, and a portion of the structure located within the first active space moves along the groove wall of the limiting groove.
[0019] According to the first aspect, in one possible implementation, the elastic member is spaced apart from the second end of the second channel along the extending direction of the second channel; or,
[0020] The second hinge seat includes a second movable space located on one side of the second connecting portion along the second direction. A portion of the structure of the elastic element is located within the second movable space. The second movable space and the second channel are spaced apart along the second direction, which is parallel to the rotation axis when the second hinge seat and the first hinge seat rotate relative to each other.
[0021] According to the first aspect, in one possible implementation, the second hinge seat further includes a second limiting portion, which is spaced apart from the second connecting portion along the second direction, and a second movable space is formed between the second limiting portion and the second connecting portion; a portion of the structure of the elastic member is located within the second movable space, and the second limiting portion is used to stop the elastic member.
[0022] Secondly, this application also provides an earphone case, including a case body, a case lid, a flexible conductive structure, and the flip structure described in the first aspect. The case body is connected to the first hinge seat, and the case lid is connected to the second hinge seat. The case lid can rotate relative to the case body to open or close the case body. The flexible conductive structure passes through the first channel and the second channel in sequence, and both ends of the flexible conductive structure are electrically connected to the case body and the case lid, respectively.
[0023] The headphone case according to this embodiment of the present invention has at least the following beneficial effects: By applying the above-described flipping structure, a deformation space is provided by the first channel. When the second hinge seat rotates, the flexible conductive structure can adaptively deform the portion of the structure from the second end to the end extending into the inner cavity of the case. The deformation range is no longer limited to the slit between the case body and the lid, but extends to the first channel with a first height. Furthermore, the flexible conductive structure can automatically adjust its shape according to the space of the first channel and its own stress conditions, forming a gentle bending structure instead of a sharp angle. This avoids stress concentration on the flexible conductive structure, reduces the probability of mechanical fatigue or fracture damage, and improves the stability and service life of the headphone case's electrical performance.
[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0026] Figure 1 This is a schematic diagram of the headphone case in an embodiment of the present invention;
[0027] Figure 2 This is a cross-sectional structural diagram of the earphone case in an embodiment of this utility model;
[0028] Figure 3 This is a schematic diagram showing the assembly relationship between the flexible conductive structure and the flipping structure in an embodiment of this utility model;
[0029] Figure 4 This is a cross-sectional view of the flipping structure in an embodiment of the present invention;
[0030] Figure 5 This is a schematic diagram of the flipping structure in an embodiment of the present invention;
[0031] Figure 6 This is a disassembly diagram of the flipping structure in an embodiment of this utility model.
[0032] Figure label:
[0033] 1000, Flip structure; 200, First hinge seat; 210, First channel; 220, First connecting part; 230, First limiting part; 240, Limiting groove; 250, Main frame; 251, Limiting beam; 260, Hinge part; 270, Mounting groove; 280, Connecting ear; 300, Second hinge seat; 310, Second channel; 311, First side wall; 312, Second side wall; 320, Stop part; 330, Second connecting part; 340, Second limiting part; 350, Rotating base; 360, Mounting part; 400, Elastic element; 410, Connecting rod; 420, Spiral structure; 500, Rotating shaft; 2000, Earphone case; 2001, Case body; 2002, Case cover; 2003, Flexible conductive structure. Detailed Implementation
[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0035] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0037] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0038] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0039] In related technologies, an FPC (Flexible Printed Circuit Board) can be installed at the rotating connection between the headphone case body and the lid. The FPC enables electrical connections between electrical components on the case body and the lid. However, the opening and closing actions repeatedly apply bending stress to the FPC, and this stress concentrates at the gap between the case body and the lid. Furthermore, to ensure a proper opening angle for the lid, the included angle between the two parts formed by the bending of the FPC may be less than 90°, or even reach 0°. This can easily cause mechanical fatigue or breakage of the FPC, thereby affecting the electrical performance and lifespan of the headphone case.
[0040] This application provides an earphone case, such as Figures 1 to 3 As shown, the headphone case 2000 includes a case body 2001, a lid 2002, a flexible conductive structure 2003, and a flip structure 1000. The case body 2001 and the lid 2002 are rotatably connected via the flip structure 1000, thereby enabling rotation between the lid 2002 and the case body 2001. When the case body 2001 and the lid 2002 of the headphone case 2000 are closed, they form a receiving cavity for holding the headphones. The two ends of the flexible conductive structure 2003 are electrically connected to the case body 2001 and the lid 2002, respectively. Specifically, the case body 2001 typically also has an inner cavity containing electrical components, such as batteries, sensors, and spring pins, for detecting or charging the headphones. The lid 2002 may also contain electrical components, such as indicator lights and displays, for indicating the status or operating mode of the headphones and the headphone case 2000. Other electrical components may also be provided, and this application does not limit this. The electrical components inside the housing 2001 and the electrical components inside the cover 2002 are electrically connected by the flexible conductive structure 2003 to form a complete control circuit, which is powered by the same battery and realizes signal transmission. The flexible conductive structure 2003 can be an FPC.
[0041] This application provides a flip structure applied to the aforementioned headphone case. For example... Figures 1 to 6As shown, the flip structure 1000 includes a first hinge seat 200 and a second hinge seat 300 that are rotatably connected to each other. The first hinge seat 200 is connected to the box body 2001, and the second hinge seat 300 is connected to the box cover 2002. The second hinge seat 300 can rotate with the box cover 2002.
[0042] The first hinge seat 200 has a first channel 210 communicating with the inner cavity of the box body 2001, and the second hinge seat 300 has a second channel 310. The flexible conductive structure 2003 passes through the first channel 210 and the second channel 310 in sequence. The second channel 310 has a first end and a second end. The first end communicates with the inner cavity of the box cover 2002, that is, the portion of the flexible conductive structure 2003 exposed at the first end extends into the inner cavity of the box cover 2002 and is electrically connected to the electrical components inside the box cover 2002; the portion of the flexible conductive structure 2003 exposed at the second end needs to pass through the first channel 210 and extend into the inner cavity of the box body 2001 to be electrically connected to the electrical components inside the box body 2001.
[0043] Within the rotational stroke of the second hinge seat 300, the projection of the second end along the extension direction of the first channel 210 lies within the cross-sectional boundary of the first channel 210. The first channel 210 has a certain height. When the second hinge seat 300 rotates with the lid 2002, the second end swings around the rotation axis of the second hinge seat 300 and the first hinge seat 200, thereby causing the flexible conductive structure 2003 to swing within the first channel 210. That is, the first channel 210 provides a deformation space. When the second hinge seat 300 rotates, the flexible conductive structure 2003 can adaptively deform the portion of its structure between the second end and the end extending into the cavity of the box body 2001. The deformation range is no longer limited to the slit between the box body 2001 and the lid 2002, but extends to the first channel 2140 with a certain height. Furthermore, the flexible conductive structure 2003 automatically adjusts its shape according to the space of the first channel 210 and its own stress conditions, tending to form a gently curved structure rather than a sharp angle. This avoids stress concentration on the flexible conductive structure 2003, reduces the probability of mechanical fatigue or fracture damage to the flexible conductive structure 2003, and improves the stability and service life of the electrical performance of the earphone case 2000.
[0044] When the second hinge seat 300 is in the first position, the cover 2002 is in a closed state of the box body 2001. At this time, the extension direction of the second channel 310 intersects with the extension direction of the first channel 210. This intersecting design allows the flexible conductive structure 2003 to form a specific layout within the two channels when the cover 2002 is closed, satisfying the electrical connection requirements while ensuring the compactness and stability of the structure in the closed state. Simultaneously, when the second hinge seat 300 is in the first position, the distance from the second end to the inner cavity of the box body 2001 is not at its minimum, which reserves space for the movement and deformation of the flexible conductive structure 2003 when the cover 2002 is subsequently opened.
[0045] When the second hinge seat 300 is in the second position, the lid 2002 is in the open state of the box body 2001. In this state, the second end is positioned towards or within the first channel 210. This design allows the flexible conductive structure 2003 sufficient space to adjust when the lid 2002 is open, preventing damage due to excessive stretching or bending. Furthermore, as the second hinge seat 300 rotates from the first position to the second position, the distance from the second end to the first channel 210 gradually decreases. Specifically, as the second hinge seat 300 rotates, the distance from the second end to the inner cavity of the box body 2001 further decreases, allowing the second end to push the flexible conductive structure 2003 towards the first channel 210. This movement facilitates adaptive deformation of the flexible conductive structure 2003 at the first channel 210, preventing the flexible conductive structure 2003 from moving outwards from the box body 2001, thereby preventing the flexible conductive structure 2003 from protruding from the gap between the box body 2001 and the lid 2002.
[0046] Furthermore, when the second hinge seat 300 rotates from the first position to the second position, the distance from the second end to the inner cavity of the box 2001 first decreases and then increases, thereby reducing the required length and deformation of the flexible conductive structure 2003.
[0047] In some embodiments, the second channel 310 has a first sidewall 311 and a second sidewall 312 disposed opposite to each other; when the second hinge seat 300 is in the first position, the first sidewall 311 is located on the front side and the second sidewall 312 is located on the rear side; in the downward direction, the portion of the first sidewall 311 near the second end is disposed at a decreasing distance from the first channel 210 and forms a smooth transition surface; when the second hinge seat 300 rotates from the second position to the first position, the second end of the first sidewall 311 contacts the flexible conductive structure 2003 and pushes the flexible structure to move. In this embodiment, the portion of the first sidewall 311 near the lower end is set as a smooth transition surface to avoid forming a sharp apex structure and to avoid scratching the flexible conductive structure 2003.
[0048] In some embodiments, the second hinge seat 300 includes a stop portion 320 protruding from the second end, the stop portion 320 having a stop surface, the stop surface being coplanar with the second sidewall 312. Conversely, when the second hinge seat 300 rotates from the first position to the second position, the stop surface contacts the flexible conductive mechanism and pushes the flexible conductive structure 2003 toward the first channel 210, preventing the flexible conductive structure 2003 from deforming outward from the bottom of the second end toward the outside of the housing 2001.
[0049] In some embodiments, please refer to the following: Figure 2 and Figure 5 An elastic element 400 can also be provided between the box body 2001 and the lid 2002. The two ends of the elastic element 400 are connected to the first hinge seat 200 and the second hinge seat 300, respectively. When the second hinge seat 300 is in the first position and the second position, the elastic element 400 is in a compressed state. This provides a certain resistance force to the lid 2002, keeping the second hinge seat 300 and the lid 2002 in their current state and preventing accidental operation.
[0050] When the elastic element 400 is present, the elastic element 400 and the second end of the second channel 310 can be spaced apart in the vertical direction, so that there is a certain gap between the flexible conductive mechanism and the elastic element 400. Alternatively, the top of the second hinge seat 300 used for connecting with the end portion of the elastic element 400 can be defined as the second connecting portion 330. A second movable space is formed on the left side of the second connecting portion 330, and a part of the structure of the elastic element 400 is located in the second movable space. The second movable space and the second channel 310 are spaced apart in the horizontal direction, so that the part of the elastic element 400 located in the second space is misaligned with the flexible conductive structure 2003, thereby reducing the possibility of contact between the elastic element 400 and the flexible conductive structure 2003 and preventing the movement of the elastic element 400 from damaging the flexible conductive structure 2003.
[0051] The second connecting portion 330 and the stop portion 320 are integrated into a structure, that is, the second connecting portion 330 protrudes from the second end, and the front side of the second connecting portion 330 forms a stop surface.
[0052] The first hinge seat 200 is provided with a first connecting portion 220 and a first limiting portion 230 spaced apart in the left-right direction, and the first connecting portion 220 has a mounting hole extending in the left-right direction; the second hinge seat 300 is provided with a second connecting portion 330 and a second limiting portion 340 spaced apart in the left-right direction, and the second connecting portion 330 has a mounting hole extending in the left-right direction; the two ends of the elastic member 400 are respectively installed in the mounting holes of the first hinge seat 200 and the second hinge seat 300, and the two ends of the elastic member 400 are movable in the left-right direction. When the lid is opened and closed, the elastic element 400 is deformed by pressure. While the two ends of the elastic element 400 rotate, they also move in the left and right directions. The first limiting part 230 and the second limiting part 340 can stop the elastic element 400, thereby limiting the left and right movement of the two ends of the elastic element 400. This keeps the two ends of the elastic element 400 in the mounting holes of the two hinge seats (first hinge seat 200 and second hinge seat 300), preventing the elastic element 400 from disengaging from the corresponding connecting part and improving the stability and reliability of the flip structure 1000.
[0053] A first movable space is formed between the first connecting part 220 and the first limiting part 230, and a second movable space is formed between the second connecting part 330 and the second limiting part 340. This means that both ends of the elastic member 400 can adapt to deformation by moving in the left-right direction, avoiding excessive unilateral movement. Furthermore, the edge of the mounting hole is a continuous closed circle in the circumferential direction, meaning there is no groove on the connecting part communicating with the side wall of the mounting hole. While keeping the end of the elastic member 400 within the mounting hole, the elastic member 400 cannot detach from the side wall of the mounting hole. Therefore, by designing the compression amount of the elastic member 400, it can adapt to larger rotation angles, such as 95°, 100°, 110°, etc., which this application does not limit.
[0054] Furthermore, the inner diameter of the mounting hole can be larger than the diameter of the portion of the elastic element 400 that extends into the mounting hole, providing ample space for the movement of the elastic element 400 within the mounting hole. This allows the elastic element 400 to rotate and move laterally within the mounting hole to a certain extent without being excessively restricted by the hole wall.
[0055] The dimensions of the first and second movable spaces in the left-right direction can be the same or different, and this application does not limit this. However, when the movable spaces of the two hinge seats are different in the left-right direction, the larger movable space needs to be provided with a limiting structure to support the part of the elastic member 400 located in the movable space. For example, the side wall of the second movable space can form a limiting groove 240 extending in the left-right direction. When the elastic member 400 is compressed and deformed, part of the structure of the elastic member 400 abuts against the groove wall of the limiting groove 240 and slides along the groove wall of the limiting groove 240, so as to avoid bending and deformation of the end structure of the elastic member 400 and ensure the smooth movement of the end of the elastic member 400 in the mounting hole.
[0056] In some embodiments, such as Figure 6 As shown, the elastic element 400 includes multiple bent connecting rods 410. The connection points of adjacent connecting rods 410 form one or more spiral structures 420. The expansion and contraction of the spiral structure 420 stores and releases energy, effectively buffering and regulating the force during the flipping process, ensuring smooth and stable flipping. The two connecting rods 410 at both ends are inserted into two corresponding mounting holes, achieving a stable connection between the elastic element 400 and the two hinge seats. The spiral structure 420, connected to the connecting rods 410 at the ends, is confined between the connecting portion and the limiting portion, thereby limiting the travel of the ends of the elastic element 400.
[0057] For example, the elastic element 400 may include three connecting rods 410 arranged in a Z-shape, and correspondingly, two helical structures 420. The connecting rods 410 at the ends remain straight, and when the elastic element 400 is compressed, the distance between the two helical structures 420 in the left-right direction increases. Understandably, the elastic force of the elastic element 400 can be adjusted by adjusting the number of turns of the helical structures 420.
[0058] In some embodiments, such as Figures 3 to 6 As shown, the first hinge seat 200 includes a main frame 250 and two hinge portions 260 spaced apart in the left-right direction, with the main frame 250 forming a first channel 210. A first connecting portion 220 and a first limiting portion 230 are both connected to one side of the main frame 250. The hinge portions 260 protrude from the main frame 250 toward the outside of the box body 2001. The second hinge seat 300 is located between the two hinge portions 260 and is rotatably connected to the two hinge portions 260 via a pivot 500. When the second hinge seat 300 is in the second position, a portion of its structure extends into the first channel 210. This prevents interference between the second hinge seat 300 and other components when the box cover 2002 is opened, improving the smoothness and stability of the flip structure 1000's movement.
[0059] The first hinge seat 200 forms a limiting groove 240 extending in the left-right direction between the first connecting part 220 and the first limiting part 230. When the flipping action is performed, the elastic member 400 is subjected to a downward force, causing the elastic member 400 to compress and deform. Part of the structure of the elastic member 400 can abut against the side wall of the limiting groove 240 and slide along the side wall of the limiting groove 240, so as to prevent the end structure of the elastic member 400 from bending and maintain the smoothness of the elastic member 400 moving in the left-right direction.
[0060] The main frame 250 has a limiting beam 251 located at the top of the first channel 210. The top or rear side of the limiting beam 251 forms a first limiting surface. When the second hinge seat 300 is in the first position, the second hinge seat 300 abuts against the first limiting surface; that is, the limiting beam 251 can support the second hinge seat 300 when it is in the first position. The bottom surface of the limiting beam 251 forms a second limiting surface, that is, the top wall of the first channel 210 forms a second limiting surface. When the second hinge seat 300 is in the second position, the second hinge seat 300 abuts against the second limiting surface. This abutting relationship limits the maximum opening angle of the lid 2002, preventing damage to the box body 2001 or the hinge structure due to excessive opening.
[0061] This embodiment achieves precise control of the opening angle of the lid 2002 through the limiting beam 251. By adjusting the positions of the first and second limiting surfaces during the design phase, the maximum opening angle of the lid 2002 can be flexibly set to meet different usage requirements. Furthermore, the limiting beam 251 is located at the top of the first channel 210, eliminating the need for other support and limiting structures, resulting in a more compact overall layout and reduced structural complexity and cost.
[0062] Furthermore, a mounting groove 270 is formed on the top of the main frame 250, which is used for the insertion of the protruding structure of the box body 2001. The connection position between the first hinge seat 200 and the box body 2001 is determined by the cooperation between the protruding structure on the box body 2001 and the mounting groove 270. The first hinge seat 200 also includes two connecting ears 280 disposed on both sides of the main frame 250 along the first direction. The connecting ears 280 are used for connection with the box body 2001. For example, the first hinge seat 200 can be fixed to the box body 2001 by fasteners passing through the connecting ears 280 and connecting to the box body 2001.
[0063] Based on this, the housing 2001 may include a first housing 2001 and a second housing 2001. The first housing 2001 is fixed to the connecting ear 280 by fasteners such as screws. The second housing 2001 is provided with a protruding structure, which is inserted into the mounting groove 270 for positioning, and then connected to the first housing 2001 by a snap-fit structure or screws. An inner cavity for accommodating electrical components is formed between the first housing 2001 and the second housing 2001.
[0064] In some embodiments, such as Figures 3 to 6 As shown, the second hinge base 300 includes a rotating base 350 and a mounting portion 360 connected together. A second connecting portion 330 and a second limiting portion 340 are located at the bottom of the rotating base 350. The rotating base 350 is positioned between the two hinge portions 260 and connected to them via a rotating shaft 500. That is, when the second hinge base 300 is in the second position, the rotating base 350 can fill the gap between the two hinge portions 260, providing a shielding effect. The mounting portion 360 is used to connect with the lid 2002. Specifically, the mounting portion 360 protrudes from the main frame 250, facilitating direct insertion into the corresponding structure of the lid 2002, thereby increasing the contact area between the second hinge portion 260 and the lid 2002 and improving connection stability.
[0065] When the second hinge seat 300 is in the first position, the rotating base 350 can abut against one side of the main frame 250 in the front-rear direction, that is, the front side of the rotating base 350 can cooperate with the first limiting surface to limit the position; or, the mounting part 360 protrudes from the front side of the rotating base 350, so that when the second hinge seat 300 is in the first position, the protruding structure of the mounting part 360 can abut against the top of the main frame 250, that is, the bottom surface of the mounting part 360 can cooperate with the first limiting surface to limit the position.
[0066] When the second hinge seat 300 is in the second position, the end of the rotating base 350 away from the mounting part 360 abuts against the top wall of the first channel 210, limiting the maximum opening angle of the cover 2002 and preventing damage to the box body 2001 or the hinge structure due to excessive opening.
[0067] In this embodiment, the rotating base and the wall surface of the mounting part 360 are used to achieve the limiting cooperation with the limiting beam 251, without the need for other supporting structures and limiting structures, making the overall layout more compact and reducing the complexity and cost of the structure.
[0068] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.
Claims
1. A flipping structure, characterized in that, include: A first hinge seat is used to connect with the box body, and the first hinge seat has a first channel communicating with the inner cavity of the box body; A second hinge seat is used to connect to the lid. The second hinge seat is rotatably connected to the first hinge seat. The second hinge seat rotates to cause the lid to close or open the box body. The second hinge seat has a second channel. The second channel and the first channel are used to sequentially pass through a flexible conductive structure for powering the lid and the box body. The second channel has a first end and a second end. The first end communicates with the inner cavity of the lid. Within the rotation stroke of the second hinge seat, the projection of the second end along the extension direction of the first channel is located within the cross-sectional boundary of the first channel, so that the second end pushes the flexible conductive structure to swing within the first channel when the second hinge seat rotates.
2. The flipping structure according to claim 1, characterized in that, The second hinge seat has a first position and a second position, and the second hinge seat rotates to switch to the first position or the second position; When the second hinge seat is in the first position, the box cover closes the box body, and the extension direction of the second channel intersects the extension direction of the first channel; And / or, When the second hinge seat is in the second position, the box cover opens the box body, and the second end is positioned toward or within the first channel.
3. The flipping structure according to claim 2, characterized in that, The second channel has a first sidewall and a second sidewall disposed opposite to each other; When the second hinge seat is in the first position, the first sidewall is located on the side of the second sidewall facing the first channel; Furthermore, along the first direction, the distance between the portion of the first sidewall near the second end and the first channel decreases progressively, forming a smooth transition surface; the first direction is the direction from the first end to the second end.
4. The flipping structure according to claim 3, characterized in that, The second hinge seat includes a stop portion protruding from the second end, the stop portion having a stop surface, the stop surface being coplanar with the second sidewall.
5. The flipping structure according to claim 2, characterized in that, The first hinge seat has a first connecting portion, the second hinge seat has a second connecting portion, and the flipping structure further includes an elastic element, one end of which is connected to the first connecting portion and the other end of which is connected to the second connecting portion; When the second hinge seat is in the first position and the second position, the elastic element is in a compressed state.
6. The flipping structure according to claim 5, characterized in that, The first hinge seat further includes a first limiting part, and a first movable space is formed between the first limiting part and the first connecting part. A portion of the structure of the elastic member is housed in the first movable space. The first limiting part is used to stop the elastic member to limit the deformation range of the elastic member.
7. The flipping structure according to claim 6, characterized in that, The sidewalls of the first active space form a limiting groove, and the elastic element is configured to compress and deform when the second hinge seat rotates, and the portion of the structure located within the first active space moves along the groove wall of the limiting groove.
8. The flipping structure according to claim 5, characterized in that, Along the extending direction of the second channel, the elastic element is spaced apart from the second end of the second channel; or, The second hinge seat includes a second movable space located on one side of the second connecting portion along the second direction. A portion of the structure of the elastic element is located within the second movable space. The second movable space and the second channel are spaced apart along the second direction, which is parallel to the rotation axis when the second hinge seat and the first hinge seat rotate relative to each other.
9. The flipping structure according to claim 8, characterized in that, The second hinge seat also includes a second limiting part, which is spaced apart from the second connecting part along the second direction, and a second movable space is formed between the second limiting part and the second connecting part; a portion of the structure of the elastic member is located within the second movable space, and the second limiting part is used to stop the elastic member.
10. An earphone case, characterized in that, The device includes a box body, a box lid, a flexible conductive structure, and a flip structure as described in any one of claims 1 to 9. The box body is connected to the first hinge seat, the box lid is connected to the second hinge seat, and the box lid is rotatable relative to the box body to open or close the box body. The flexible conductive structure passes through the first channel and the second channel in sequence, and both ends of the flexible conductive structure are electrically connected to the box body and the box lid, respectively.