Automatic cover turning mechanism for TWS earphone charging box

Abstract

The utility model discloses an automatic cover turning mechanism of a TWS earphone charging box, which comprises a box body and a cover body rotatably mounted on the box body, and a flat-plate-shaped spring is arranged between the box body and the cover body. The spring comprises a first twisting ring located in the middle, a first elastic arm, a second elastic arm, a first connecting part and a second connecting part, wherein the first elastic arm and the second elastic arm are formed at the two ends of the first twisting ring and can be compressed and deformed relative to the first twisting ring, the first connecting part is formed on the first elastic arm in a bent mode, and the second connecting part is formed on the second elastic arm in a bent mode. The second connecting part is movably connected with the rear end of the cover body, and a second rotating fulcrum formed by the first connecting part and the box body and a first rotating fulcrum formed by the cover body and the box body are not on the same axis. The cover body can be stably closed relative to the box body through the spring, a magnet does not need to be installed, the magnet is saved, convenience is achieved, the cover body opened relative to the box body can be stably supported, the cover body is prevented from accidentally falling off, and use convenience is improved.

Description

Technical Field:

[0001] The utility model relates to the technical field of charging box products, and particularly refers to an automatic flip mechanism for a TWS earphone charging box. Background Art:

[0002] The earphone charging box is used for storing and charging earphones. Currently, most earphone charging boxes need to be manually opened. When taking out or putting in the earphones, the user needs to exert force on the opening position of the earphone charging box, which is not convenient to use.

[0003] In this regard, the Chinese utility model patent with the application number 202020774226.8 discloses a wireless earphone charging box, which includes a box body and a box cover. The box body is provided with an earphone slot for placing wireless earphones. A first magnet is arranged along the outer edge contour of the top of the box body, and a second magnet is arranged along the outer edge contour of the bottom of the box cover. The first magnet and the second magnet attract each other. This wireless earphone charging box can largely prevent iron filings / iron powder from being adsorbed onto the contact surface between the box body and the box cover, and avoid the problem that the appearance is affected because the iron filings / iron powder are pressed into the plastic of the contact surface to form small black dots.

[0004] However, the above wireless earphone charging box has some deficiencies: when the box cover is opened relative to the box body, there is no support structure formed between them, and it is easy for the box cover to automatically fall and close relative to the box body, which affects taking out or putting in the earphones relative to the wireless earphone charging box and is not convenient to use. Moreover, after the box cover is closed relative to the box body, it is necessary to adsorb and fix through the first magnet and the second magnet to achieve stable closing and prevent the box cover from accidentally opening. However, it is necessary to additionally install the first magnet and the second magnet, and its structure is relatively complex and the cost is relatively high, which is not conducive to improving the market competitiveness.

[0005] In view of this, the inventor of the present invention proposes the following technical solutions. Summary of the Utility Model:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an automatic flip mechanism for a TWS earphone charging box.

[0007] To solve the above technical problems, the present utility model adopts the following technical solutions: The automatic flip mechanism of the TWS earphone charging case includes a case body and a cover body rotatably mounted on the case body. A flat spring is provided between the case body and the cover body. The spring includes a first torsion loop in the middle, first and second elastic arms formed at both ends of the first torsion loop and capable of being compressed and deformed relative to the first torsion loop, a first connecting portion bent and formed on the first elastic arm, and a second connecting portion bent and formed on the second elastic arm. The first connecting portion is movably connected to the rear end of the case body, and the second connecting portion is movably connected to the rear end of the cover body. The second rotation fulcrum formed by the first connecting portion and the case body and the first rotation fulcrum formed by the cover body and the case body are not on the same axis.

[0008] Furthermore, in the above technical solution, the second rotation fulcrum is located above the first rotation fulcrum; when the cover body is closed relative to the case body, the spring is in a forward-tilted state to tilt and support the rear end of the cover body, so that the front end of the cover body is closed relative to the case body; when the cover body is opened relative to the case body, the spring is compressed as the cover body is opened, and when the spring changes from a vertical state to a backward-tilted state, the spring provides an elastic force to drive the cover body to continue to open relative to the case body until the cover body is opened to the extreme limit relative to the case body, and the spring is in a backward-tilted state to tilt and support the rear end of the cover body to support and position the cover body after it is opened relative to the case body.

[0009] Furthermore, in the above technical solution, the number of the first torsion loops, the first elastic arms, the second elastic arms, and the first connecting portions is two each. The two first torsion loops are symmetrically distributed; the two first connecting portions are symmetrically distributed, and there is a gap between them; the two first elastic arms are symmetrically distributed; the two second elastic arms are symmetrically distributed; the two first torsion loops are symmetrically distributed; the second connecting portion is one, and both ends of the second connecting portion are integrally connected to the ends of the first elastic arm and the second elastic arm respectively.

[0010] Furthermore, in the above technical solution, the spring is formed by winding a single spring wire; a second torsion loop is also bent and formed between the second elastic arm and the second connecting portion.

[0011] Furthermore, in the above technical solution, the number of the first torsion loops, the first elastic arms, the second elastic arms, the first connecting portions, and the second torsion loops is two each. The two first torsion loops are symmetrically distributed; the two first elastic arms are symmetrically distributed; the two second elastic arms are symmetrically distributed; the two first torsion loops are symmetrically distributed; the two first connecting portions are symmetrically distributed, and there is a gap between them; the two second torsion loops are symmetrically distributed; the second connecting portion is one, and both ends of the second connecting portion are integrally connected to the two second torsion loops respectively and serve as the elastic arms of the two second torsion loops.

[0012] Furthermore, in the above technical solution, a hinge seat is provided on the upper side of the rear end of the box body. Hinge shafts are inserted through both sides of the hinge seat. An installation groove is provided on the lower side of the rear end of the cover body. Shaft holes are provided on both side walls of the installation groove. The hinge seat is inserted into the installation groove, and the hinge shafts are inserted through the shaft holes to form a rotatable connection.

[0013] Furthermore, in the above technical solution, a first convex seat and a second convex seat are provided at the upper end of the hinge seat. First through holes and second through holes distributed horizontally are provided on both the first convex seat and the second convex seat. The two first connecting parts are respectively inserted through the first through holes and the second through holes to form a rotatable movable connection.

[0014] Furthermore, in the above technical solution, a limiting block is formed on the rear side wall of the installation groove. An activity groove is formed between the limiting block and the lower side wall of the installation groove; the first connecting part is pressed into the activity groove and forms a rotatable movable connection.

[0015] Furthermore, in the above technical solution, the box body includes an outer shell body and an inner shell body fixed to the outer shell body. The inner shell body is provided with a receiving cavity for receiving TWS earphones.

[0016] Furthermore, in the above technical solution, the cover body includes an outer cover and an inner cover fixed to the inner side of the outer cover. The inner cover has a concave cavity.

[0017] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art: A flat spring is provided between the box body and the cover body of the present utility model, and the second rotation fulcrum formed by the spring and the box body and the first rotation fulcrum formed by the cover body and the box body are not on the same axis. When the cover body is closed relative to the box body, the spring is in a forwardly inclined state to support the rear end of the cover body obliquely. The elastic force of the spring can drive the front end of the cover body to close relative to the box body, achieving the purpose of stable closing, thereby avoiding the phenomenon that the cover body is accidentally opened. It is not necessary to install upper and lower magnets at the corresponding positions of the cover body and the box body, saving the use cost of the upper and lower magnets, simplifying the complexity of the product structure, and making the manufacturing cost of the present utility model lower; when the cover body is opened relative to the box body, the spring is compressed as the cover body is opened, and when the spring changes from a vertical state to a backwardly inclined state, the spring provides an elastic force to drive the cover body to continue to open relative to the box body until the cover body is opened to the extreme position relative to the box body, and the spring is in a backwardly inclined state to support the rear end of the cover body obliquely to support and position the cover body after it is opened relative to the box body, thereby achieving the purpose of automatic flip opening, and being able to stably support the opened cover body, effectively preventing the phenomenon that the cover body accidentally falls and closes relative to the box body, facilitating the insertion or removal of TWS earphones relative to the box body, and being extremely convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS:

[0018] Figure 1 is a perspective view of the closed state of the present utility model;

[0019] Figure 2 is a perspective view of the spring in the present utility model;

[0020] Figure 3 is a cross-sectional view of the closed state of the present utility model;

[0021] Figure 4 is a cross-sectional view of the open state of the present utility model;

[0022] Figure 5 is an assembly drawing of the spring and the box body in the present utility model;

[0023] Figure 6 is an assembly drawing of the spring and the cover body in the present utility model. Specific embodiments:

[0024] The present utility model will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0025] See Figure 1-6 As shown, it is an automatic flip mechanism for a TWS earphone charging case, which includes a box body 1 and a cover body 2 rotatably mounted on the box body 1. During specific use, the TWS earphone can be placed in the box body 1, and the cover body 2 can be closed on the box body 1 to achieve the purpose of storing the TWS earphone; when the TWS earphone needs to be taken out, the TWS earphone can be taken out directly after opening the cover body 2.

[0026] A flat spring 3 is provided between the box body 1 and the cover body 2. The spring 3 includes a first torsion coil 31 in the middle, a first elastic arm 32 and a second elastic arm 33 formed at both ends of the first torsion coil 31 and capable of being compressed and deformed relative to the first torsion coil 31, a first connecting portion 34 bent and formed on the first elastic arm 32, and a second connecting portion 35 bent and formed on the second elastic arm 33. The first connecting portion 34 is rotatably connected to the rear end of the box body 1, and the second connecting portion 35 is movably connected to the rear end of the cover body 2. The second rotation fulcrum 300 formed by the first connecting portion 34 and the box body 1 and the first rotation fulcrum 100 formed by the cover body 2 and the box body 1 are not on the same axis. In this way, when the cover body 2 is opened / opened outward from the closed state relative to the box body 1, the spring 3 will be continuously compressed and gradually expand outward. In this way, after the cover body 2 is opened, the spring 3 can drive the cover body 2 to open outward to achieve the purpose of automatic flip. Specifically: when the cover body 2 is closed relative to the box body 1, the spring 3 is in a forward-tilted state to tilt and support the rear end of the cover body 2. The elastic force of the spring 3 can drive the front end of the cover body 2 to close relative to the box body 1 to achieve the purpose of stable closing, so as to avoid the phenomenon that the cover body 2 is accidentally opened. It does not need to install upper and lower magnets at the corresponding positions of the cover body 2 and the box body 1, saving the use cost of the upper and lower magnets, simplifying the complexity of the product structure, and making the manufacturing cost of the present utility model lower; when the cover body 2 is opened relative to the box body 1, the spring 3 is compressed as the cover body 2 is opened. When the spring 3 changes from a vertical state to a backward-tilted state, the spring 3 provides an elastic force to drive the cover body 2 to continue to open relative to the box body 1 until the cover body 2 is opened to the extreme position relative to the box body 1. And the spring 3 is in a backward-tilted state to tilt and support the rear end of the cover body 2 to support and position the cover body 2 opened relative to the box body 1, thereby achieving the purpose of automatic flip, and being able to stably support the opened cover body 2, effectively preventing the phenomenon that the cover body 2 accidentally falls and closes relative to the box body 1, so as to facilitate putting the TWS earphone into the box body 1 or taking out the TWS earphone from the box body 1, which is extremely convenient to use.

[0027] Among them, the second rotation fulcrum 300 is located above the first rotation fulcrum 100. In this embodiment, when the cover body 2 is closed relative to the box body 1, the spring 3 is in the maximum expanded state, and it is also in a compressed state, so as to be able to provide an elastic force to the cover body 2 to push up the rear end of the cover body 2 upward, and make the front end of the cover body 2 move downward to close with the box body 1, which is similar to the principle of the lever structure. When the cover body 2 is opened relative to the box body 1, the spring 3 will be immediately compressed. Among them, when the angle at which the cover body 2 is opened relative to the box body 1 is 30 - 45°, the spring is compressed to the minimum, and the spring changes from a forward-tilted state to a vertical state. Then, when the cover body 2 is further opened and the spring changes from a vertical state to a forward-tilted state, the spring 3 provides an elastic force to drive the cover body 2 to continue to open relative to the box body 1 until the cover body 2 is opened to the extreme limit relative to the box body 1 (that is, the angle at which the cover body 2 is opened relative to the box body 1 is 90 degrees or greater than 90 degrees). At this time, the spring is also expanded to the maximum and in a compressed state, and the spring 3 is in a backward-tilted state to tilt and support the rear end of the cover body 2 to support and position the cover body 2 after it is opened relative to the box body 1, so as to prevent the cover body 2 from accidentally falling or toppling.

[0028] The spring 3 is formed by winding a spring wire.

[0029] The spring 3 has at least the following two structures:

[0030] The first structure is: the number of the first torsion loops 31, the first elastic arms 32, the second elastic arms 33, and the first connecting parts 34 are all two, and the two first torsion loops 31 are symmetrically distributed; the two first connecting parts 34 are symmetrically distributed, and there is a gap between them; the two first elastic arms 32 are symmetrically distributed; the two second elastic arms 33 are symmetrically distributed; the two first torsion loops 31 are symmetrically distributed; the second connecting part 35 is one, and both ends of the second connecting part 35 are integrally connected to the ends of the first elastic arm 32 and the second elastic arm 33 respectively.

[0031] The second structure is: a second torsion loop 36 is further bent and formed between the second elastic arm 33 and the second connecting part 35. Among them, the number of the first torsion loops 31, the first elastic arms 32, the second elastic arms 33, the first connecting parts 34, and the second torsion loops 36 are all two, and the two first torsion loops 31 are symmetrically distributed; the two first elastic arms 32 are symmetrically distributed; the two second elastic arms 33 are symmetrically distributed; the two first torsion loops 31 are symmetrically distributed; the two first connecting parts 34 are symmetrically distributed, and there is a gap between them; the two second torsion loops 36 are symmetrically distributed; the second connecting part 35 is one, and both ends of the second connecting part 35 are integrally connected to the two second torsion loops 36 respectively and serve as the elastic arms of the two second torsion loops 36.

[0032] The difference between the second structure of the above spring and the first structure lies in that: the second structure of the spring has two more second torsion coils 36 than the first structure, and the elastic deformation ability of the spring can be enhanced by adding the second torsion coils 36. As a preferred embodiment of this embodiment, the spring adopts the above second structure.

[0033] The angle formed between the first elastic arm 32 and the first connecting portion 34 is less than 90 degrees.

[0034] A hinge seat 11 is provided on the upper side of the rear end of the box body 1. Hinge shafts 12 are passed through both sides of the hinge seat 11. An installation groove 21 is provided on the lower side of the rear end of the cover body 2. Shaft holes 22 are provided on both side walls of the installation groove 21. The hinge seat 11 is fitted into the installation groove 21, and the hinge shafts 12 are passed through the shaft holes 22 to form a rotatable connection, thereby forming the first rotation fulcrum 100. Among them, a first convex seat 13 and a second convex seat 14 are provided on the upper end of the hinge seat 11. Horizontally distributed first through holes 131 and second through holes 141 are provided on both the first convex seat 13 and the second convex seat 14. The two first connecting portions 34 are respectively passed through the first through hole 131 and the second through hole 141 to form a rotatable movable connection, thereby forming the second rotation fulcrum 300, and making the second rotation fulcrum 300 located above the first rotation fulcrum 100.

[0035] A limiting block 23 is formed on the rear side wall of the installation groove 21. An activity groove 231 is formed between the limiting block 23 and the lower side wall of the installation groove 21; the first connecting portion 34 is pressed into the activity groove 231 to form a rotatable movable connection.

[0036] The box body 1 includes an outer shell 101 and an inner shell 102 fixed to the outer shell 101. The inner shell 102 is provided with a receiving cavity 103 for receiving TWS earphones.

[0037] The cover body 2 includes an outer cover 201 and an inner cover 202 fixed to the inner side of the outer cover 201. The inner cover 202 has a concave cavity 203.

[0038] In summary, the present utility model provides a flat spring 3 between the box body 1 and the cover body 2, and the second rotation fulcrum 300 formed by the spring 3 and the box body 1 and the first rotation fulcrum 100 formed by the cover body 2 and the box body 1 are not on the same axis. After the cover body 2 is closed relative to the box body 1, the spring 3 is in a forward-tilted state to tilt and support the rear end of the cover body 2. The elastic force of the spring 3 can drive the front end of the cover body 2 to close relative to the box body 1, achieving the purpose of stable closing, thereby avoiding the phenomenon that the cover body 2 is accidentally opened. It does not require the installation of upper and lower magnets at the corresponding positions of the cover body 2 and the box body 1, saving the use cost of the upper and lower magnets, simplifying the complexity of the product structure, and making the manufacturing cost of the present utility model lower; when the cover body 2 is opened relative to the box body 1, the spring 3 is compressed as the cover body 2 is opened, and when the spring 3 changes from a vertical state to a backward-tilted state, the spring 3 provides an elastic force to drive the cover body 2 to continue to open relative to the box body 1 until the cover body 2 is opened to the extreme position relative to the box body 1, and the spring 3 is in a backward-tilted state to tilt and support the rear end of the cover body 2, so as to support and position the cover body 2 after it is opened relative to the box body 1, thereby achieving the purpose of automatic flipping of the cover, and being able to stably support the opened cover body 2, effectively preventing the phenomenon that the cover body 2 accidentally falls and closes relative to the box body 1, facilitating the placement or removal of the TWS earphone relative to the box body 1, and being extremely convenient to use.

[0039] Certainly, the above description is only a specific embodiment of the present utility model, and does not limit the scope of implementation of the present utility model. Any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the patent application of the present utility model shall be included in the scope of the patent application of the present utility model.

Claims

1. An automatic flip mechanism for a TWS earphone charging case, which comprises a case body (1) and a cover body (2) rotatably mounted on the case body (1), and is characterized in that: A flat spring (3) is arranged between the case body (1) and the cover body (2). The spring (3) includes a first torsion coil (31) in the middle, first spring arms (32) and second spring arms (33) formed at both ends of the first torsion coil (31) and capable of being compressed and deformed relative to the first torsion coil (31), a first connecting portion (34) bent and formed on the first spring arm (32), and a second connecting portion (35) bent and formed on the second spring arm (33). The first connecting portion (34) is rotatably connected to the rear end of the case body (1), and the second connecting portion (35) is movably connected to the rear end of the cover body (2). The second rotation fulcrum (300) formed by the first connecting portion (34) and the case body (1) and the first rotation fulcrum (100) formed by the cover body (2) and the case body (1) are not on the same axis.

2. The automatic flip mechanism for the charging case of a TWS earphone according to claim 1, characterized in that: The second rotation fulcrum (300) is located above the first rotation fulcrum (100); when the cover body (2) is closed relative to the case body (1), the spring (3) is in a forward-tilted state to tilt and support the rear end of the cover body (2), so that the front end of the cover body (2) is closed relative to the case body (1); when the cover body (2) is opened relative to the case body (1), the spring (3) is compressed as the cover body (2) is opened, and when the spring (3) changes from a vertical state to a backward-tilted state, the spring (3) provides an elastic force to drive the cover body (2) to continue to open relative to the case body (1) until the cover body (2) is opened to the extreme position relative to the case body (1), and the spring (3) is in a backward-tilted state to tilt and support the rear end of the cover body (2) to support and position the cover body (2) after it is opened relative to the case body (1).

3. The automatic flip mechanism for the charging case of a TWS earphone according to claim 1, characterized in that: The number of the first torsion coils (31), the first spring arms (32), the second spring arms (33), and the first connecting portions (34) is two each. The two first torsion coils (31) are symmetrically distributed; the two first connecting portions (34) are symmetrically distributed, and there is a gap between them; the two first spring arms (32) are symmetrically distributed; the two second spring arms (33) are symmetrically distributed; the two first torsion coils (31) are symmetrically distributed; the second connecting portion (35) is one, and both ends of the second connecting portion (35) are integrally connected to the ends of the first spring arm (32) and the second spring arm (33) respectively.

4. An automatic flip mechanism for a TWS earphone charging case according to claim 1, characterized in that: The spring (3) is formed by winding a single spring wire; a second torsion coil (36) is also bent and formed between the second spring arm (33) and the second connecting portion (35).

5. The automatic flip mechanism for the charging case of a TWS earphone according to claim 4, characterized in that: The number of the first torsion loops (31), the first elastic arms (32), the second elastic arms (33), the first connecting parts (34), and the second torsion loops (36) is two each. The two first torsion loops (31) are symmetrically distributed; the two first elastic arms (32) are symmetrically distributed; the two second elastic arms (33) are symmetrically distributed; the two first torsion loops (31) are symmetrically distributed; the two first connecting parts (34) are symmetrically distributed and there is a gap therebetween; the two second torsion loops (36) are symmetrically distributed; the second connecting part (35) is one, and both ends of the second connecting part (35) are integrally connected to the two second torsion loops (36) respectively and serve as the elastic arms of the two second torsion loops (36).

6. An automatic flip mechanism for a TWS earphone charging case according to any one of claims 1-5, characterized in that: On the upper side of the rear end of the box body (1), there is a hinge seat (11). The hinge shaft (12) is passed through both sides of the hinge seat (11). On the lower side of the rear end of the cover body (2), there is an installation groove (21). Both side walls of the installation groove (21) are provided with shaft holes (22). The hinge seat (11) is inserted into the installation groove (21), and the hinge shaft (12) is passed through the shaft holes (22) to form a rotatable connection.

7. The automatic flip mechanism for the charging case of a TWS earphone according to claim 6, wherein: On the upper end of the hinge seat (11), there are a first convex seat (13) and a second convex seat (14). Horizontally distributed first through holes (131) and second through holes (141) are provided on both the first convex seat (13) and the second convex seat (14). The two first connecting parts (34) are respectively passed through the first through hole (131) and the second through hole (141) to form a rotatable movable connection.

8. The automatic flip mechanism for the charging case of a TWS earphone according to claim 7, characterized in that: On the rear side wall of the installation groove (21), a limiting block (23) is formed. An activity groove (231) is formed between the limiting block (23) and the lower side wall of the installation groove (21); the first connecting part (34) is pressed into the activity groove (231) to form a rotatable movable connection.

9. An automatic flip mechanism for a TWS earphone charging case according to any one of claims 1-5, characterized in that: The box body (1) includes an outer shell body (101) and an inner shell body (102) fixed to the outer shell body (101). The inner shell body (102) is provided with a containing cavity (103) for containing TWS earphones.

10. An automatic flip mechanism for a TWS earphone charging case according to any one of claims 1-5, characterized in that: The cover body (2) includes an outer cover (201) and an inner cover (202) fixed to the inner side of the outer cover (201). The inner cover (202) has a concave cavity (203).

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