Charging box and earphone assembly

Abstract

The utility model discloses a charging box and an earphone assembly, the charging box comprises an upper shell assembly, a lower shell assembly and a driving member, the upper shell assembly and the lower shell assembly are pivotally connected with each other, and the driving member is used for providing a closing driving force in the closing process of the upper shell assembly relative to the lower shell assembly. The lower shell assembly is provided with a concave area for accommodating an earphone and a matching area which is arranged at the periphery of the concave area and is matched with the upper shell assembly in a closed state, the matching area is provided with a supporting surface and a protruding surface which is arranged in a protruding manner relative to the supporting surface, and the upper shell assembly is supported on the supporting surface in the closed state; the upper shell assembly is arranged on the periphery of the protruding face and covers the periphery of the protruding face, a first gap is formed between the upper shell assembly and the protruding face, and the width of the first gap ranges from 0.05 mm to 0.1 mm. Through the above mode, the frequency of the in-position prompt tone of the closing of the upper shell assembly and the lower shell assembly can be reduced, so that the closing sound of the charging box is more depressed, and the subjective hearing experience of a user is improved.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to charging cases and earphone assemblies. Background Technology

[0002] With the increasing popularity of electronic devices, they have become indispensable social and entertainment tools in people's daily lives, and people's demands for electronic devices are also getting higher and higher. Electronic devices such as headphones are also widely used in people's daily lives. They can be used in conjunction with terminal devices such as mobile phones and computers to provide users with an auditory feast.

[0003] The earbuds can be stored in the charging case when the battery is low or they are not in use, making them easy to charge and store. However, the current charging case makes a rather loud closing sound, which is not pleasant for users. Utility Model Content

[0004] To solve the above-mentioned technical problems, one technical solution adopted in this application is to provide a charging case, which includes an upper shell assembly, a lower shell assembly, and a driving component. The upper shell assembly and the lower shell assembly are pivotally connected to each other. The driving component is used to provide a closing driving force during the closing process of the upper shell assembly relative to the lower shell assembly. The lower shell assembly is provided with a recessed area for accommodating the earphone and a matching area provided around the recessed area for cooperating with the upper shell assembly in the closed state. The matching area is provided with a support surface and a protruding surface protruding relative to the support surface. In the closed state, the upper shell assembly is supported on the support surface and covers the periphery of the protruding surface. There is a first gap between the upper shell assembly and the protruding surface, and the width of the first gap is between 0.05mm and 0.1mm.

[0005] In some embodiments, the maximum protrusion height of the protruding surface relative to the supporting surface is 0.2mm-1.0mm.

[0006] In some embodiments, when viewed from the top of the lower housing assembly, the lower housing assembly has a closed annular edge, the annular edge including a connecting edge located on the pivotal connection side with the upper housing assembly, and protruding surfaces disposed on other edges other than the connecting edge.

[0007] In some embodiments, the lower shell assembly includes a lower shell body and a lower shell liner. The lower shell body forms a first receiving space with a first open end. The lower shell liner is disposed in the first receiving space. A recessed area is disposed on the lower shell liner. The lower shell liner is provided with a flange portion that overlaps the end face of the first open end. The protruding surface is the outer peripheral surface of the flange portion, and the supporting surface is the exposed portion of the end face of the first open end relative to the flange portion.

[0008] In some embodiments, in the closed state, the upper shell assembly and the lower shell assembly have a second gap communicating with the first gap and the recessed area, the width of the second gap being between 0.1 mm and 0.3 mm.

[0009] In some embodiments, the upper shell assembly includes an upper shell body and an upper shell liner, the upper shell body forming a second receiving space having a second open end, the upper shell liner being disposed within the second receiving space, and a second gap being located between the lower shell liner and the upper shell liner.

[0010] In some embodiments, the lower shell assembly is provided with a first connecting portion, the upper shell assembly is provided with a second connecting portion, and the charging box further includes a pivot shaft that passes through the first connecting portion and the second connecting portion, thereby enabling the upper shell assembly and the lower shell assembly to be pivotally connected to each other. The charging box also includes a damping pad sleeved on the pivot shaft and in contact with the first connecting portion and the second connecting portion respectively.

[0011] In some embodiments, there are two second connecting parts, a first connecting part is located between the two second connecting parts, and the dimension of the first connecting part along the axial direction of the rotating shaft is larger than that of the two second connecting parts respectively. The damping pad is made of silicone and has a thickness of 0.2mm-0.4mm.

[0012] In some embodiments, the driving component is a torsion spring, which includes a first rod, a second rod, a third rod, a first annular connecting portion, and a second annular connecting portion formed by bending wire. The first rod, the second rod, and the third rod are arranged in a Z-shape. The two ends of the first annular connecting portion are respectively connected to the adjacent ends of the first rod and the second rod. The two ends of the second annular connecting portion are respectively connected to the adjacent ends of the second rod and the third rod. The first rod is connected to the lower shell assembly, and the third rod is connected to the upper shell assembly. The distance between the first rod and the third rod gradually decreases and then gradually increases as the upper shell assembly closes relative to the lower shell assembly. The wire is made of metal and has a diameter of not less than 0.35 mm.

[0013] In some embodiments, when the drive member is in its natural state, the initial distance between the first and third rods is between 5.5 mm and 7.5 mm.

[0014] Another technical solution adopted in this application is to provide an earphone assembly, which includes a charging case and earphones as described in the above embodiments, wherein the charging case is used to house the earphones.

[0015] The beneficial effects of this application are as follows: Unlike the prior art, this application provides an upper shell assembly and a lower shell assembly that are pivotally connected to each other in the charging case. The lower shell assembly is provided with a recessed area and a matching area located around the recessed area. The matching area abuts and closes with the upper shell assembly. The lower shell assembly is provided with a support surface and a protruding surface that protrudes from the support surface. When the upper shell assembly and the lower shell assembly are in the closed state, the upper shell assembly can be supported on the support surface and cover the periphery of the protruding surface. There is a first gap with a width between 0.05mm and 0.1mm between the upper shell assembly and the protruding surface. By creating a protruding surface in the lower shell assembly relative to the supporting surface, the mating area becomes stepped. The upper shell assembly closes with the lower shell assembly through this stepped mating area. A first gap with a width between 0.05mm and 0.1mm is provided between the upper shell assembly and the protruding surface, enhancing the airtightness between them. This prevents airflow from easily overflowing from the mating area, thus affecting the engagement sound generated by the collision between the upper and lower shell assemblies. This reduces the frequency of the engagement sound, making the closing sound of the charging case more muffled and improving the user's subjective auditory experience. It also ensures the charging case can be opened and closed smoothly. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment of the headphone assembly of this application;

[0017] Figure 2 This is a three-dimensional structural diagram of the charging box embodiment of this application in the open state from one side view.

[0018] Figure 3 This is a three-dimensional structural diagram of the charging box embodiment of this application in a closed state from one side view.

[0019] Figure 4 yes Figure 3 An exploded structural diagram of an embodiment of the charging box shown;

[0020] Figure 5 yes Figure 3 The illustrated charging box embodiment is shown as a cross-sectional structural diagram along section line AA.

[0021] Figure 6 yes Figure 5 An enlarged schematic diagram of region O in the cross-sectional structure of the charging box embodiment shown;

[0022] Figure 7 yes Figure 2 A three-dimensional structural schematic diagram of another side view of the embodiment of the charging box shown;

[0023] Figure 8 yes Figure 3 Another exploded view of the charging case embodiment shown;

[0024] Figure 9 yes Figure 3 A three-dimensional structural schematic diagram of the driving component in the embodiment of the charging box shown;

[0025] Figure 10 This is a three-dimensional structural diagram of the assembly structure of the lower shell body and the driving component in the embodiment of the charging box of this application;

[0026] Figure 11 yes Figure 10 An enlarged schematic diagram of region P in the embodiment of the charging box shown. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] The reference to "embodiment" in this application means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0029] The following is an exemplary description of the headphone assembly in an embodiment of the headphone assembly.

[0030] like Figure 1 As shown, the earphone assembly 100 includes a charging case 1 and earphones 2, wherein the charging case 1 is used to house the earphones 2.

[0031] Headphone 2 is an audio converter capable of receiving electrical signals from a media player or receiver and converting them into sound waves that the user can hear. In some embodiments, headphones 2 can be open-back headphones, such as ear-hook headphones, behind-the-ear headphones, or clip-on headphones.

[0032] The earphones 2 can be placed in the charging case 1 when the battery is low or they are not in use. The charging case 1 can accommodate the earphones 2 and charge them. In other embodiments, the charging case 1 can be used in conjunction with other electronic devices, such as smartwatches or smart glasses.

[0033] like Figures 1 to 4As shown, the charging case 1 may include an upper shell assembly 10, a lower shell assembly 20, and a drive member 30. The upper shell assembly 10 and the lower shell assembly 20 may be pivotally connected to each other, and the drive member 30 may be used to provide a closing driving force during the closing process of the upper shell assembly 10 relative to the lower shell assembly 20.

[0034] In this context, the pivot connection refers to the interconnected upper shell assembly 10 and lower shell assembly 20, where one can be a fixed member and the other a pivot member, allowing the pivot member to move relative to the connection point connected to the fixed member. In some embodiments, the lower shell assembly 20 can serve as a fixed member, and the upper shell assembly 10 can serve as a pivot member, allowing the upper shell assembly 10 to move relative to the connection point connected to the lower shell assembly 20, thus completing the operations of opening and closing the charging case 1. The drive member 30 can be used to provide a closing driving force for the upper shell assembly 10 during the closing process relative to the lower shell assembly 20. The drive member 30 can also be used to provide a closing driving force for the upper shell assembly 10 during the opening process relative to the lower shell assembly 20.

[0035] In some embodiments, such as Figures 1 to 4 As shown, the lower shell assembly 20 may be provided with a recessed area 210 for accommodating the earphone 2 and a mating area 220. The mating area 220 is disposed around the recessed area 210 and is used to cooperate with the upper shell assembly 10 in the closed state. In the closed state, the mating areas 220 of the upper shell assembly 10 and the lower shell assembly 20 overlap each other to enclose the space of the recessed area 210, thereby storing the earphone 2 inside the charging case 1. Conversely, the charging case 1 may have an open state. In the open state, the end of the upper shell assembly 10 not connected to the lower shell assembly is away from the mating area 220 of the lower shell assembly 20, exposing the recessed area 210 of the lower shell assembly 20, allowing the user to take out and put in the earphone 2.

[0036] As an example, when the charging case 1 is in the open state, it can be as follows: Figure 1 as well as Figure 2 As shown, when the earphone 2 is placed in the recessed area 210, it can be used as follows: Figure 1 As shown, when the charging case 1 is in the closed state, it can be used as follows: Figure 3 As shown.

[0037] like Figures 2 to 6 As shown, the matching area 220 may be provided with a support surface 221 and a protruding surface 222 that protrudes relative to the support surface 221.

[0038] In the closed state, the upper shell assembly 10 is supported on the support surface 221 and covers the periphery of the protruding surface 222. In other words, the support surface 221 and the protruding surface 222 of the mating area 220 make the mating area 220 form a stepped shape, and the protruding surface 222 protrudes relative to the support surface 221 along the direction from the lower shell assembly 20 toward the upper shell assembly 10.

[0039] like Figure 6 As shown, a first gap 201 may exist between the upper shell assembly 10 and the protruding surface 222. The width of the first gap 201 may be between 0.05mm and 0.1mm. For example, the width of the first gap 201 may be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, or 0.1mm, etc.

[0040] As an example, the width of the first gap 201 can be as follows: Figure 6 The width L1 is shown.

[0041] During the closing process of the upper shell assembly 10 and the lower shell assembly 20, the upper shell assembly 10 and the lower shell assembly 20 will collide with each other and produce a positioning prompt sound indicating that the charging case 1 is closed. However, this positioning prompt sound is usually quite loud and crisp, which makes the user's subjective hearing unpleasant. However, by setting the matching area 220 between the upper shell assembly 10 and the lower shell assembly 20 to a stepped shape, and setting the first gap 201 between the upper shell assembly 10 and the lower shell assembly 20 to a width between 0.05mm and 0.1mm, the airtightness between the upper shell assembly 10 and the lower shell assembly 20 can be enhanced when the upper shell assembly 10 and the lower shell assembly 20 are closed. This makes it difficult for the airflow inside the recessed area 210 to overflow from the matching area 220, thereby affecting the positioning prompt sound generated by the collision between the upper shell assembly 10 and the lower shell assembly 20. This reduces the frequency of the positioning prompt sound when the upper shell assembly 10 and the lower shell assembly 20 are closed, making the closing sound of the charging case 1 more muffled, thereby improving the user's subjective auditory experience. At the same time, it allows the charging case 1 to open and close smoothly.

[0042] If the width of the first gap 201 is less than 0.5mm, it indicates that the upper shell assembly 10 and the protruding surface 222 are too close, and the upper shell assembly 10 and the lower shell assembly 20 are prone to interference when opening or closing, making it difficult to open or close the charging case 1. If the width of the first gap 201 is greater than 0.1mm, when the upper shell assembly 10 and the lower shell assembly 20 are closed, the airtightness between them will be weakened, and the frequency of the closing prompt sound of the upper shell assembly 10 and the lower shell assembly 20 will be increased, making the sound of the charging case 1 too crisp and loud, which will be unpleasant for the user's hearing. Therefore, setting the first gap 201 between the upper shell assembly 10 and the protruding surface 222 to between 0.05mm and 0.1mm can ensure that the charging case 1 can be closed or opened normally, while the first gap 201 can significantly affect the collision sound between the upper shell assembly 10 and the lower shell assembly 20. This helps to reduce the frequency of the positioning prompt sound when the upper shell assembly 10 and the lower shell assembly 20 are closed, making the charging case 1 emit a more muffled sound when closed.

[0043] In some embodiments, the maximum protrusion height of the protruding surface 222 relative to the supporting surface 221 can be 0.2mm-1.0mm. For example, the protrusion height of the protruding surface 222 relative to the supporting surface 221 can be 0.2mm, 0.4mm, 0.5mm, 0.6mm, 0.8mm, 0.9mm, or 1.0mm, etc.

[0044] As an example, the highest protrusion height of the protruding surface 222 relative to the supporting surface 221 can be as follows: Figure 6 As shown in the middle height L2.

[0045] The highest protrusion height of the protruding surface 222 relative to the supporting surface 221 refers to the distance from the end of the protruding surface 222 furthest from the supporting surface 221 to the supporting surface 221. The highest protrusion height characterizes the degree of height of the step shape formed by the matching area 220. The highest protrusion height of the protruding surface 222 relative to the supporting surface 221 also affects the size of the space of the first gap 201, which in turn affects the sound effect of the positioning prompt sound when the upper shell assembly 10 and the lower shell assembly 20 are closed.

[0046] If the highest protrusion height of the protrusion 222 relative to the support surface 221 is less than 0.2mm, it indicates that the protrusion 222 is relatively close to the support surface 221. The step shape formed by the matching area 220 is too small, which will reduce the airtightness between the upper shell assembly 10 and the lower shell assembly 20, resulting in a louder and crisper closing sound between the upper shell assembly 10 and the lower shell assembly 20. If the highest protrusion height of the protrusion 222 relative to the support surface 221 is greater than 1mm, it indicates that the protrusion 222 is far from the support surface 221. Since the upper shell assembly 10 and the lower shell assembly 20 are pivotally connected, the height of the protrusion 222 relative to the support surface 221 is too high, which will cause the protrusion 222 to interfere with the movement path of the upper shell assembly 10. That is, the protrusion 222 will block the closing of the upper shell assembly 10, which will make the charging case 1 unable to close smoothly and easily detach.

[0047] Therefore, setting the protrusion height of the protrusion surface 222 relative to the support surface 221 to between 0.2mm and 1.0mm not only allows the mating area 220 to form a step shape with a suitable height, but also increases the airtightness between the upper shell assembly 10 and the lower shell assembly 20, thereby reducing the frequency of the positioning prompt sound generated by the collision between the upper shell assembly 10 and the lower shell assembly 20. This is beneficial for the charging case 1 to emit a more muffled closing sound during the closing process. Moreover, when the mating area 220 and the upper shell assembly 10 cooperate with each other, a first gap 201 with sufficient space can be formed, so that the protrusion surface 222 will not interfere with the closing path of the upper shell assembly 10 relative to the lower shell assembly 20, allowing the charging case 1 to close smoothly and tightly.

[0048] In some embodiments, such as Figure 2 as well as Figure 7 As shown, the lower shell assembly 20 may have a closed annular edge 202. The annular edge 202 may include a connecting edge 2021 located on the pivotal connection side between the lower shell assembly 20 and the upper shell assembly 10. The protruding surface 222 may be provided on other edges of the annular edge 202 besides the connecting edge 2021. With this configuration, when the upper shell assembly 10 rotates relative to the lower shell assembly 20, the protruding surface 222 will not obstruct the rotation path of the upper shell assembly 10, thereby allowing the charging case 1 to open and close smoothly.

[0049] In some embodiments, such as Figure 2 as well as Figure 4 As shown, the lower shell assembly 20 may include a lower shell body 230 and a lower shell liner 240. The lower shell body 230 may form a first accommodating space 232 having a first open end 231, and the lower shell liner 240 is disposed within the first accommodating space 232. A recessed area 210 is disposed on the lower shell liner 240. The lower shell liner 240 is provided with a flange portion 241 that overlaps the end face of the first open end 231. The protruding surface 222 may be the outer peripheral surface of the flange portion 241, and the supporting surface 221 is the exposed portion of the end face of the first open end 231 relative to the flange portion 241.

[0050] With this configuration, other components in the charging case 1 can be placed in the first accommodating space 232, and the lower shell liner 240 can cover other components inside the lower shell assembly 20, thereby making the charging case 1 more aesthetically pleasing.

[0051] Furthermore, by forming a protruding surface 222 on the flange portion 241 of the lower shell liner 240 overlapping the first opening end 231, and forming a support surface 221 on a portion of the first opening end 231 of the lower shell body 230, the stepped shape of the matching area 220 can be more easily formed, without the need for other parts of the lower shell assembly 20 to form a stepped matching area 220. This simplifies the component structure of the lower shell assembly 20, enables structural reuse, and reduces the manufacturing difficulty of the charging box 1.

[0052] In some embodiments, such as Figure 6 As shown, in the closed state, the upper shell assembly 10 and the lower shell assembly 20 may have a second gap 203 connecting the first gap 201 and the recessed area 210. The width of the second gap 203 may be between 0.1mm and 0.3mm. For example, the width of the second gap 203 may be 0.1mm, 0.12mm, 0.15mm, 0.18mm, 0.2mm, 0.22mm, 0.25mm, 0.28mm, or 0.3mm, etc.

[0053] As an example, the width of the second gap 203 can be as follows: Figure 6 As shown in L3.

[0054] Since the second gap 203 connects the first gap 201 and the recessed area 210, the size of the second gap 203 will affect the airflow in the first gap 201 and the recessed area 210, thereby affecting the airtightness between the upper shell assembly 10 and the lower shell assembly 20, and thus affecting the sound effect of the collision sound between the upper shell assembly 10 and the lower shell assembly 20 during the closing process.

[0055] If the width of the second gap 203 is set to less than 0.1mm, the upper shell assembly 10 and the lower shell assembly 20 will interfere with each other when they rotate relative to each other to close, thus preventing the charging case 1 from closing smoothly. If the width of the second gap 203 is set to greater than 0.1mm, the airtightness between the upper shell assembly 10 and the lower shell assembly 20 will be reduced, thereby increasing the frequency of the positioning prompt sound when the upper shell assembly 10 and the lower shell assembly 20 are closed, making the sound of the charging case 1 too crisp and loud, which is unpleasant for the user's hearing.

[0056] Therefore, setting the width of the second gap 203 to between 0.1mm and 0.1mm not only allows the upper shell assembly 10 and the lower shell assembly 20 to rotate smoothly relative to each other, enabling the charging case 1 to close smoothly, but also increases the airtightness between the upper shell assembly 10 and the lower shell assembly 20, thereby reducing the frequency of the positioning prompt sound when the upper shell assembly 10 and the lower shell assembly 20 are closed, making the sound of the charging case 1 more muffled, thus improving the user's auditory experience.

[0057] In some embodiments, such as Figure 4 as well as Figure 8 As shown, the upper shell assembly 10 may include an upper shell body 110 and an upper shell liner 120. The upper shell body 110 may form a second accommodating space 112 with a second opening end 111. The upper shell liner 120 is disposed in the second accommodating space 112. The second gap 203 is located between the lower shell liner 240 and the upper shell liner 120.

[0058] Specifically, in the closed state, the support surfaces 221 of the upper shell body 110 and the lower shell body 230 abut against each other. The upper shell body 110 can cover the periphery of the protruding surface 222. A first gap 201 is formed between the upper shell body 110 and the protruding surface 222, while a second gap 203 is located between the lower shell liner 240 and the upper shell liner 120.

[0059] By setting the upper shell component 10 in this way, it is easier for the upper shell component 10 to form a shape that matches the matching area 220 of the lower shell component 20, and it will not affect the aesthetic appearance of the side of the upper shell component 10 facing the outside when it is closed.

[0060] In some embodiments, such as Figure 4 as well as Figure 8As shown, the lower shell assembly 20 is provided with a first connecting part 250, and the upper shell assembly 10 is provided with a second connecting part 130.

[0061] like Figures 8 to 11 As shown, the charging box 1 may also include a pivot 40, which may be mounted on the first connecting part 250 and the second connecting part 130, thereby pivotally connecting the upper shell assembly 10 and the lower shell assembly 20 to each other. The charging box 1 may also include a damping pad 50 sleeved on the pivot 40 and in contact with the first connecting part 250 and the second connecting part 130 respectively.

[0062] One of the upper shell assembly 10 and the lower shell assembly 20 can rotate relative to the other around the pivot 40, so that the upper shell assembly 10 and the lower shell assembly 20 can be in an open state and a closed state, thereby facilitating the opening and closing of the charging case 1 for use and storage.

[0063] The damping pad 50 can contact the first connecting part 250 and the second connecting part 130. The damping pad 50 can generate damping force when the first connecting part 250 and the second connecting part 130 move relative to each other, thereby increasing the friction between them. This increases the damping feel when the upper shell assembly 10 rotates relative to the lower shell assembly 20, and slows down the rotation speed between the upper shell assembly 10 and the lower shell assembly 20, so that the damping pad 50 can play a shock absorption role during the opening and closing of the charging case 1.

[0064] In some embodiments, such as Figure 8 As shown, there can be two second connecting parts 130, and the first connecting part 250 is located between the two second connecting parts 130, and the dimension of the first connecting part 250 along the axial direction of the rotating shaft 40 is larger than that of the two second connecting parts 130 respectively.

[0065] Specifically, by providing two second connecting portions 130 along the axial direction of the rotating shaft 40 on both sides of the first connecting portion 250, the rotation of the upper shell assembly 10 relative to the lower shell assembly 20 becomes more stable and reliable, and less prone to deflection. Furthermore, by making the dimension of the first connecting portion 250 along the axial direction of the rotating shaft 40 larger than that of the two second connecting portions 130, the rotating shaft 40 is more securely limited by the first connecting portion 250. During the rotation of the two second connecting portions 130, the rotating shaft 40 is less likely to be damaged or deformed, thereby improving the structural strength and stability of the charging case 1.

[0066] In some embodiments, the damping pad 50 may be made of silicone. Silicone is a flexible material that can deform under stress. Using silicone for the damping pad 50 allows it to deform more easily during the rotation of the upper shell assembly 10, thereby reducing the likelihood of jamming between the upper shell assembly 10 and the lower shell assembly 20 during rotation. Furthermore, silicone has a wide adjustable range of hardness, allowing for adjustment or selection of the hardness to make the damping pad 50 more suitable as needed.

[0067] In some embodiments, the thickness of the damping pad 50 may be 0.2mm-0.4mm. For example, the thickness of the damping pad 50 may be 0.2mm, 0.25mm, 0.3mm, 0.35mm or 0.4mm, etc.

[0068] As an example, the thickness of the damping pad 50 can be as follows: Figure 11 The width L4 is shown in the figure.

[0069] The thickness of the damping pad 50 affects its damping and shock absorption effects. If the thickness is less than 0.2mm, the damping pad 50 is too thin, resulting in low damping force and weak damping and shock absorption. Conversely, if the thickness is greater than 0.4mm, the damping pad is too thick, resulting in strong damping force. During the movement of the upper shell assembly 10 and the lower shell assembly 20, this damping force generates significant friction, making the opening and closing of the charging case 1 difficult.

[0070] Therefore, setting the thickness of the damping pad 50 between 0.2mm and 0.4mm allows the damping pad 50 to have a more suitable damping force, which can not only buffer the relative movement of the upper shell assembly 10 and the lower shell assembly 20, but also make the movement of the upper shell assembly 10 and the lower shell assembly 20 smoother, so as to facilitate the opening and closing of the charging case 1.

[0071] In some embodiments, the drive member 30 may be a torsion spring, which includes a first rod portion 310, a second rod portion 320, a third rod portion 330, a first annular connecting portion 340, and a second annular connecting portion 350 formed by bending wire.

[0072] Please combine Figure 9 as well as Figure 11The first rod portion 310, the second rod portion 320, and the third rod portion 330 can be arranged in a Z-shape. The two ends of the first annular connecting portion 340 are respectively connected to the adjacent ends of the first rod portion 310 and the second rod portion 320, and the two ends of the second annular connecting portion 350 are respectively connected to the adjacent ends of the second rod portion 320 and the third rod portion 330. The first rod portion 310 is connected to the lower shell assembly 20, and the third rod portion 330 is connected to the upper shell assembly 10. The distance between the first rod portion 310 and the third rod portion 330 gradually decreases and then gradually increases as the upper shell assembly 10 opens relative to the lower shell assembly 20.

[0073] Specifically, during the closing process of the upper shell assembly 10 relative to the lower shell assembly 20, the distance between the first rod 310 and the third rod 330 gradually decreases, the second rod 320 is further compressed and generates a large elastic restoring force, and then the elastic restoring force restores the second rod 320, and the second rod 320 further pushes the third rod 330 to move, so that the distance between the first rod 310 and the third rod 330 gradually increases.

[0074] Furthermore, during the opening process of the upper shell assembly 10 relative to the lower shell assembly 20, the distance between the first rod portion 310 and the third rod portion 330 can be gradually reduced and then increased.

[0075] This configuration allows the second rod 320 of the drive member 30 to be further compressed and generate a larger elastic restoring force during the closing and opening processes of the upper shell assembly 10 relative to the lower shell assembly 20. Subsequently, under the action of the larger elastic restoring force of the second rod 320, the distance between the first rod 310 and the third rod 330 gradually increases at a faster rate. Therefore, the closing and opening speeds of the upper shell assembly 10 relative to the lower shell assembly 20 are also faster, thereby increasing the closing and opening speeds of the charging case 1. At the same time, since the upper shell assembly 10 moves faster relative to the lower shell assembly 20, the collision sound between the upper shell assembly 10 and the lower shell assembly 20 will be more obvious.

[0076] In some embodiments, when the drive member 30 is in its natural state, the initial distance between the first rod portion 310 and the third rod portion 330 can be between 5.5mm and 7.5mm. For example, the initial distance between the first rod portion 310 and the third rod portion 330 can be values ​​such as 5.5mm, 5.82mm, 6.0mm, 6.35mm, 6.68mm, 6.93mm, 7.0mm, 7.35mm, or 7.5mm. As an example, the initial distance between the first rod portion 310 and the third rod portion 330 can be as follows: Figure 9 As shown at the mid-range L5.

[0077] The driving member 30 being in its natural state means that the driving member 30 is not subjected to external compression or tension. When the driving member 30 is in its natural state, the first rod 310 and the third rod 330 are parallel to each other, and the initial distance between the first rod 310 and the third rod 330 is the perpendicular distance between them.

[0078] Specifically, during the opening and closing of the upper shell assembly 10 and the lower shell assembly 20, the second rod portion 320 is compressed, and the first rod portion 310 and the third rod portion 330 gradually move closer together, reducing the distance between them. Therefore, the initial distance between the first rod portion 310 and the third rod portion 330 affects the elasticity of the second rod portion 320, which in turn affects the elasticity of the drive member 30. A larger initial distance between the first rod portion 310 and the third rod portion 330 indicates that the second rod portion 320 is less easily compressed, and the elastic force generated after compression is also greater. Conversely, a smaller initial distance between the first rod portion 310 and the third rod portion 330 indicates that the second rod portion 320 is more easily compressed, and the elastic force generated after compression is also smaller.

[0079] If the initial distance between the first rod 310 and the third rod 330 is less than 5.5mm, it means that the second rod 320 is easily compressed during the opening or closing of the upper shell assembly 10 and the lower shell assembly 20, and the elastic force generated by the second rod 320 is small. Therefore, after the charging case 1 is closed, the upper shell assembly 10 and the lower shell assembly 20 are very easy to separate, making it difficult for the charging case 1 to maintain a closed state. If the initial distance between the first rod 310 and the third rod 330 is greater than 7.5mm, it means that the second rod 320 is difficult to compress, making it difficult to open or close the charging case 1, and making it more difficult to open and close the charging case 1.

[0080] Therefore, setting the initial distance between the first rod portion 310 and the third rod portion 330 to between 5.5mm and 7.5mm allows the drive component 30 to have a suitable elastic range. This not only allows the charging case 1 to maintain its closed state after being closed, making it less likely for the upper shell assembly 10 and the lower shell assembly 20 to separate relative to each other, but also makes the opening and closing process of the upper shell assembly 10 and the lower shell assembly 20 smoother and less strenuous, thus facilitating the opening and closing of the charging case 1.

[0081] In some embodiments, the wire housing is made of metal. For example, the wire may be made of stainless steel.

[0082] In some embodiments, the diameter of the wire may be not less than 0.35 mm. For example, the diameter of the wire may be 0.35 mm, 0.37 mm, 0.40 mm, 0.42 mm, or 0.45 mm.

[0083] Since the driving component 30 is a torsion spring, the diameter of the wire affects the elasticity of the driving component 30, and thus its closing driving force. Setting the wire diameter to be no less than 0.35mm allows the driving component 30 to have a larger closing driving force, thereby increasing the closing speed of the charging box 1. If the wire diameter is less than 0.35mm, the driving component 30 is prone to excessive deformation and damage during compression.

[0084] In summary, this application provides an upper shell assembly 10 and a lower shell assembly 20 in the charging case 1, which are pivotally connected to each other. The lower shell assembly has a recessed area 210 and a mating area 220 disposed around the recessed area 210. The mating area 220 abuts and closes with the upper shell assembly 10. The lower shell assembly 20 has a support surface 221 and a protruding surface 222 protruding from the support surface 221. When the upper shell assembly 10 and the lower shell assembly 20 are in the closed state, the upper shell assembly 10 can be supported on the support surface 221 and cover the periphery of the protruding surface 222. There is a first gap 201 with a width between 0.05mm and 0.1mm between the upper shell assembly 10 and the protruding surface 222. With this configuration, the lower shell assembly 20 has a protruding surface 222 protruding from the support surface 221, so that the mating area 220 is stepped. Therefore, the upper shell assembly 10 and the lower shell assembly 20 are closed with each other through the stepped mating area 220. Meanwhile, a first gap 201 with a width between 0.05mm and 0.1mm is provided between the upper shell assembly 10 and the protruding surface 222, which can enhance the airtightness between the upper shell assembly 10 and the lower shell assembly 20, making it difficult for airflow inside the recessed area 210 to overflow from the matching area 220. This can affect the positioning prompt sound generated by the collision between the upper shell assembly 10 and the lower shell assembly 20, thereby reducing the frequency of the positioning prompt sound when the upper shell assembly 10 and the lower shell assembly 20 are closed, making the closing sound of the charging case 1 more muffled, thereby improving the user's subjective auditory experience, and also enabling the charging case 1 to open and close smoothly.

[0085] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A charging case, characterized in that, The charging box comprises an upper shell assembly, a lower shell assembly and a driving member, the upper shell assembly and the lower shell assembly are pivotally connected to each other, the driving member is used to provide a closing driving force during the closing process of the upper shell assembly relative to the lower shell assembly, the lower shell assembly is provided with a recessed area for accommodating earphones and a matching area arranged at the periphery of the recessed area and used to cooperate with the upper shell assembly in the closed state, the matching area is provided with a supporting surface and a protruding surface arranged protruding relative to the supporting surface, wherein in the closed state, the upper shell assembly is supported on the supporting surface and covers the periphery of the protruding surface, a first gap is formed between the upper shell assembly and the protruding surface, and the width of the first gap is 0.05-0.1 mm.

2. The charging case of claim 1, wherein, The highest protruding height of the protruding surface relative to the supporting surface is 0.2-1.0 mm.

3. The charging case of claim 1, wherein, From the top of the lower shell assembly, the lower shell assembly has a closed annular edge, the annular edge comprises a connecting edge on the side of the pivotally connected upper shell assembly, and the protruding surface is arranged on the edge of the annular edge other than the connecting edge.

4. The charging case of claim 1, wherein, The lower shell assembly comprises a lower shell body and a lower shell lining, the lower shell body forms a first accommodation space with a first open end, the lower shell lining is arranged in the first accommodation space, the recessed area is arranged on the lower shell lining, the lower shell lining is provided with a flange portion overlapping the end surface of the first open end, the protruding surface is the outer peripheral surface of the flange portion, and the supporting surface is the exposed part of the end surface of the first open end relative to the flange portion.

5. The charging case of claim 4, wherein, In the closed state, a second gap is formed between the upper shell assembly and the lower shell assembly, the second gap communicates with the first gap and the recessed area, and the width of the second gap is 0.1-0.3 mm.

6. The charging case of claim 5, wherein, The upper shell assembly comprises an upper shell body and an upper shell lining, the upper shell body forms a second accommodation space with a second open end, the upper shell lining is arranged in the second accommodation space, and the second gap is located between the lower shell lining and the upper shell lining.

7. The charging case of claim 1, wherein, The lower shell assembly is provided with a first connecting portion, the upper shell assembly is provided with a second connecting portion, the charging box further comprises a rotating shaft, the rotating shaft is arranged on the first connecting portion and the second connecting portion, so that the upper shell assembly and the lower shell assembly are pivotally connected to each other, and the charging box further comprises a damping pad sleeved on the rotating shaft and in contact with the first connecting portion and the second connecting portion respectively.

8. The charging case of claim 7, wherein, The number of the second connecting portions is two, the first connecting portion is located between the two second connecting portions, and the size of the first connecting portion along the axial direction of the rotating shaft is greater than that of the two second connecting portions respectively, the material of the damping pad is silica gel, and the thickness of the damping pad is 0.2-0.4 mm.

9. The charging case of claim 1, wherein, The driving member is a torsion spring, which comprises a first rod part, a second rod part, a third rod part, a first annular connecting part and a second annular connecting part, wherein the first rod part, the second rod part and the third rod part are arranged in a Z shape, two ends of the first annular connecting part are connected with adjacent ends of the first rod part and the second rod part respectively, two ends of the second annular connecting part are connected with adjacent ends of the second rod part and the third rod part respectively, the first rod part is connected with the lower shell assembly, the third rod part is connected with the upper shell assembly, the interval distance between the first rod part and the third rod part gradually decreases and then gradually increases during the closing process of the upper shell assembly relative to the lower shell assembly, the material of the wire is metal, and the diameter of the wire is not less than 0.35 mm.

10. The charging case of claim 9, wherein, The initial distance between the first rod part and the third rod part is between 5.5 mm and 7.5 mm when the driving member is in a natural state.

11. An earphone assembly, characterized by The earphone comprises a charging box and an earphone, and the charging box is used for accommodating the earphone.

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