CN115426579A

CN115426579A - Charging box and TWS earphone

Info

Publication number: CN115426579A
Application number: CN202211198267.7A
Authority: CN
Inventors: 王学坤; 张金栋; 曹永明; 宋鑫
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-02

Abstract

The invention discloses a charging box and a TWS earphone, wherein the charging box comprises a bottom shell, an upper cover and a magnet assembly, an installation cavity is arranged in the bottom shell, the surface of the bottom shell is sunken towards the interior of the installation cavity to form an accommodating groove for accommodating the earphone, the upper cover is rotatably connected with the bottom shell to open or cover the accommodating groove, the magnet assembly comprises a first magnet and a second magnet, the first magnet is arranged on the upper cover, and the second magnet is arranged in the installation cavity; when the upper cover covers the accommodating groove, the first magnet and the second magnet are mutually adsorbed, so that the upper cover applies pressure to the earphones in the accommodating groove. The charging box can release the earphones from a tight magnetic attraction state when the cover is opened so as to improve the earphone use experience of a user, and can ensure the earphone charging stability, reduce the contact impedance and improve the charging performance when the charging box is closed.

Description

Charging box and TWS earphone

Technical Field

The invention relates to the technical field of wireless earphone charging, in particular to a charging box and a TWS earphone applying the charging box.

Background

The TWS earphone product is a kind of electronic product that is developed at a high speed at present, and a general mainstream earphone charging box is divided into an upper part and a lower part, and the earphone is located in the charging box of the lower part for charging. In the related art, in order to ensure charging stability of the earphone, a permanent magnet is used as a fixing part for ensuring charging stability of the earphone at the lower part of a charging bin. However, if the magnetic force of the lower case magnet is too small, the earphone may have an increased impedance due to poor fixation; when the magnetic attraction is too large, the earphone is not friendly to users with thick fingers when being taken out. Meanwhile, the auditory meatus of the human body is a part which secretes more grease (especially, the TWS earphone is mostly used in young and strong years); after the earphone is used for a long time, the accumulated surface oil stain condition of the earphone and the ear canal contact part can be generated, the earphone can be taken and placed for many times, and the situation that the earphone is thrown away and flies and the earphone is scratched due to the fact that the force is exerted on the side of the earphone too hard exists.

Disclosure of Invention

The invention mainly aims to provide a charging box and a TWS earphone, and aims to provide the charging box for guaranteeing the charging stability of the earphone.

To achieve the above object, the present invention provides a charging box for charging an earphone, the charging box comprising:

the earphone comprises a bottom shell, wherein a mounting cavity is formed in the bottom shell, and the surface of the bottom shell is sunken towards the mounting cavity to form a containing groove for containing an earphone;

the upper cover is rotatably connected with the bottom shell so as to open or cover the accommodating groove;

the magnet assembly comprises a first magnet and a second magnet, the first magnet is arranged on the upper cover, and the second magnet is arranged in the mounting cavity;

when the upper cover covers the accommodating groove, the first magnet and the second magnet are mutually adsorbed, so that the upper cover applies pressure to the earphones in the accommodating groove.

In an embodiment, the bottom case is further provided with a through hole communicated with the mounting cavity, one end of the second magnet is exposed to the through hole, and the other end of the second magnet extends towards the accommodating groove;

the earphone is provided with a magnetic attraction piece, and the second magnet is used for attracting the magnetic attraction piece of the earphone in the accommodating groove.

In an embodiment, the holding tank includes two, two the holding tank is the symmetry setting, the through-hole is located two between the notch of holding tank, just the second magnet is located two between the holding tank.

In an embodiment, the through hole includes two, the second magnets include two, the two second magnets are symmetrically arranged, one end of each second magnet is exposed to one through hole, and the other end of each second magnet extends towards the direction of one accommodating groove;

and/or the second magnet is arranged in an arc shape, and the arc shape of the second magnet is matched with the arc shape of the groove wall of the accommodating groove.

In an embodiment, the upper cover is provided with an avoiding groove corresponding to each accommodating groove, and the first magnet is arranged between the two avoiding grooves.

In an embodiment, one side of the upper cover facing the accommodating groove is provided with an installation groove, and the first magnet is accommodated and limited in the installation groove.

In an embodiment, the minimum distance of the first magnet from the earpiece is greater than 20% of the earpiece diameter;

and/or the minimum distance between the second magnet and the second magnet is more than 15% of the diameter of the earphone.

In one embodiment, the first magnet is a permanent magnet;

and/or the second magnet is a soft magnet made of a soft magnetic material.

In an embodiment, the magnet assembly further includes a third magnet, the third magnet is disposed in the mounting cavity, the third magnet is located below the accommodating groove and spaced from the second magnet, the earphone is provided with a magnetic attraction piece, and the third magnet is used for attracting the magnetic attraction piece of the earphone in the accommodating groove;

and/or, the box that charges still includes the module of charging, the module of charging is located the installation intracavity, the module of charging be used for the earphone in the holding tank charges.

The invention further provides a TWS earphone which comprises an earphone and the charging box, wherein the earphone is detachably accommodated in the accommodating groove of the charging box.

According to the charging box, the accommodating groove is formed in the surface of the bottom shell in a concave mode, so that the earphone is accommodated in the accommodating groove, the earphone is convenient to store and charge, the upper cover is rotatably connected with the bottom shell, and the accommodating groove is opened or closed by the upper cover, so that storage, protection and charging stability of the earphone are further guaranteed; by arranging the magnet assembly, a first magnet of the magnet assembly is arranged on the upper cover, and a second magnet of the magnet assembly is arranged in the mounting cavity of the bottom shell; when the charging box charges the earphone, the upper cover covers the accommodating groove at the moment, so that the first magnet and the second magnet are mutually adsorbed, and the upper cover applies pressure to the earphone in the accommodating groove, thereby enhancing the strength of magnetic attraction, reducing contact impedance, improving charging performance and ensuring the charging stability of the earphone; when charging the end, the holding tank is opened to the upper cover and when keeping away from the drain pan, and the second magnet is kept away from to first magnet to inhale the state release with the earphone from inseparable magnetism, so can convenience of customers take the earphone, use experience with the earphone that promotes the user.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an upper cover opening receiving slot of a TWS headset according to an embodiment of the present invention;

FIG. 2 is a partially exploded view of an upper cover of a TWS headset with open receiving slots according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an upper cover covering the receiving cavity of the TWS earphone according to an embodiment of the present invention;

FIG. 4 is a partial cross-sectional view of an embodiment of the TWS earphone with the upper cover of the upper cover opening and the receiving slot of the upper cover opening.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				100	TWS earphone	13	Magnet assembly
1	Charging box	131	First magnet
				11	Bottom shell	132	Second magnet
111	Mounting cavity	133	Third magnet
				112	Accommodating tank	2	Earphone set
113	Through-hole	21	Magnetic part
				12	Upper cover	22	First magnetic part
121	Dodging groove	23	Second magnetic part
				122	Mounting groove

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The TWS earphone product is a kind of electronic product that is developed at a high speed at present, and a general mainstream earphone charging box is divided into an upper part and a lower part, and the earphone is located in the charging box of the lower part for charging. Among the correlation technique, for guaranteeing the reliable electric contact between earphone and the box that charges in order to provide stable charging environment, set up the magnet in earphone below and the box that charges usually, through the magnetic attraction between two magnets, guarantee the earphone and charge reliably connect between the box, in order to guarantee the charging stability of earphone. However, there are a series of problems: if the magnetic force of the lower shell magnet is too small, the resistance of the earphone is increased due to poor fixation; when the magnetic attraction is too large, the earphone is not friendly to users with thick fingers when being taken out. Meanwhile, the auditory meatus of the human body is a part which secretes more grease (especially, TWS earphone receiving groups are mostly young and old); after the earphone is used for a long time, the contact part of the earphone and the auditory canal has the accumulated condition of surface oil stain, the earphone can be taken and placed for many times, and the situations that the earphone is thrown away and flies and the earphone is scratched due to the fact that the force is excessively exerted on the side of the earphone exist. Moreover, because factors such as the easy perspire of hand and earphone outward appearance cambered surface, when the earphone and the magnetic attraction between the box that charges were great, overcome this magnetic attraction and have certain degree of difficulty, probably have the inconvenient problem of earphone of taking.

Based on the above-described concept and problems, the present invention proposes a charging box 1. It will be appreciated that the charging box 1 is applied to a TWS headset 100 and that the TWS headset 100 provides a storage space and a charging environment for the headset 2 using the charging box 1, i.e. the charging box 1 is mainly used for charging the headset 2. It is understood that the headset 2 is a wireless headset, such as a bluetooth headset, and the like, and is not limited thereto.

Referring to fig. 1 to 4, in an embodiment of the present invention, the charging box 1 includes a bottom shell 11, an upper cover 12 and a magnet assembly 13, a mounting cavity 111 is disposed in the bottom shell 11, a receiving groove 112 for receiving the earphone 2 is formed on a surface of the bottom shell 11 recessed toward the mounting cavity 111, the upper cover 12 is rotatably connected to the bottom shell 11 to open or close the receiving groove 112, the magnet assembly 13 includes a first magnet 131 and a second magnet 132, the first magnet 131 is disposed on the upper cover 12, and the second magnet 132 is disposed in the mounting cavity 111; when the upper cover 12 covers the receiving groove 112, the first magnet 131 and the second magnet 132 attract each other, so that the upper cover 12 applies pressure to the earphone 2 in the receiving groove 112.

In the present embodiment, a mounting cavity 111 is provided in the bottom case 11, and the mounting cavity 111 is used for accommodating and mounting components such as the charging module. The surface of the bottom case 11 is recessed to form a receiving groove 112 for receiving the headset 2 to be charged, that is, the receiving groove 112 of the surface of the bottom case 11 is recessed from the surface of the bottom case 11 toward the inside of the mounting cavity 111. In order to avoid that the earphone 4 placed in the receiving groove 112 falls or the charging is the temperature of the connecting part, which results in the ineffective charging, the upper cover 12 is arranged, so that the upper cover 12 is rotatably connected with the bottom shell 11, and the receiving groove 112 is opened or closed by the upper cover 12.

Optionally, the charging box 1 further includes a charging module, the charging module is disposed in the installation cavity 111, and the charging module is configured to charge the earphone 2 in the receiving groove 112.

It is understood that the upper cover 12 is pivotally connected to the side of the bottom shell 11 adjacent to the surface of the receiving groove 112, for example, by a shaft connection, a hinge connection or other means capable of achieving a pivotal connection, which is not limited herein. In this embodiment, the upper cover 12 has an upper surface and a lower surface which are opposite to each other, and when the upper cover 12 covers the accommodating groove 112, the lower surface is disposed close to the bottom case 11 and covers the notch of the accommodating groove 112, so that the earphone can be fixed in the accommodating groove 112.

It should be noted that, when the upper cover 12 covers the receiving groove 112, in order to avoid the upper cover 12 being easily rotated to open the notch of the receiving groove 112, the upper cover 12 and the side of the bottom shell 11 away from the rotational connection are detachably connected, for example, by using magnetic attraction, a snap connection, or a locking connection, which is not limited herein.

In this embodiment, by disposing the first magnet 131 of the magnet assembly 13 on the upper cover 12 and the second magnet 132 on the bottom case 11, when the accommodating groove 112 is covered by the upper cover 12, the first magnet 131 and the second magnet 132 are mutually attracted, so that the sides of the upper cover 12 and the bottom case 11 far away from the rotation connection can be attracted, and the first magnet 131 and the second magnet 132 can be mutually attracted, so that the upper cover 12 applies pressure to the earphone 2 in the accommodating groove 112, thereby ensuring the stability of the charging connection of the earphone 2.

It can be understood that when the upper cover 12 opens the receiving groove 112, the upper cover 12 is far away from the earphone 2 and the bottom case 11, so that the first magnet 131 is far away from the second magnet 132, and the attraction force between the first magnet 131 and the second magnet 132 is eliminated, so as to release the earphone, thereby facilitating the user to take the earphone 2 in the receiving groove 112.

It should be noted that the number of the first magnets 131 may be one or more, and the number of the second magnets 132 may also be one or more. Of course, the number of the first magnets 131 may be the same as or different from the number of the second magnets 132. For example, the first magnets 131 and the second magnets 132 are arranged in a one-to-one correspondence; alternatively, one first magnet 131 and a plurality of second magnets 132 are disposed correspondingly, or a plurality of first magnets 131 and one second magnet 132 are disposed correspondingly, that is, the first magnet 131 and the second magnet 132 are disposed in one-to-many or many-to-one, so that the magnetic force of the second magnet 132/the first magnet 131 can be increased by increasing the number of the second magnets 132/the first magnets 131 under the condition that the weight and the volume of the upper cover 12 or the bottom case 11 can be reduced, which is not limited herein.

In this embodiment, the first magnet 131 may be a magnet or a conductive coil, and the second magnet 132 may be a magnet or a conductive coil. Optionally, the first magnet 131 is a permanent magnet. The second magnetic body 132 is a soft magnetic body made of a soft magnetic material, for example, special cold rolled silicon steel having a good magnetic permeability as a material of the soft magnetic body.

It is understood that the first magnet 131 is a permanent magnet, which provides permanent magnetism to ensure the attractive force between the first magnet 131 and the second magnet 132. And second magnet 132 chooses for use soft magnet to when first magnet 131 is close to second magnet 132, utilize the magnetoelectricity induction principle, the permanent magnet is close the soft magnet and gives the magnetism for soft magnet after giving the magnetism for the ability of earphone 2 and first magnet 131 are inhaled to second magnet 132 has magnetism. Of course, when the first magnet 131 is far away from the second magnet 132, the magnetism of the second magnet 132 is reduced or decreased, thereby reducing the adsorptive fixation to the headset 2 to facilitate the user to take the headset 2.

In this embodiment, the speaker of the headset 2 is a permanent magnet. In order to further improve the stability of charging connection of the earphone 2, the magnetic attraction piece 21 is arranged in the earphone 2, so that the second magnet 132 can be attracted to the first magnet 131 and further attract and fix the earphone 2. Alternatively, the magnetic attraction member 21 is a magnet or a permanent magnet, and the like, and is not limited herein.

Of course, in other embodiments, the first magnet 131 is a permanent magnet, and the second magnet 132 is a permanent magnet, which is not limited herein.

In this embodiment, first magnet 131 is the permanent magnet, and second magnet 132 is soft magnet, only utilizes this moment uncap with close under covering two kinds of states, and the change of distance between first magnet 131 and the second magnet 132 changes magnetic force, can realize conveniently taking out earphone 2 from charging box 1 under the prerequisite of the stability of charging of guaranteeing earphone 2, need not to set up the conducting wire, and simple structure, equipment cost are lower, and the later maintenance cost is also lower.

Compared with the prior art, when the cover is closed (the upper cover 12 is buckled on the bottom shell 11), the first magnet 131 is close to the second magnet 132 to magnetize the second magnet 132, so that the adsorption force between the first magnet 131 and the second magnet 132 is increased, and the adsorption force between the second magnet 132 and the magnetic attraction piece 21 of the earphone 2 is increased, so that the earphone 2 is fixed by the adsorption force of the second magnet 132 on one hand, and is pushed to the bottom shell 11 under the action of the pressing force of the upper cover 12 on the earphone 2 on the other hand, the reliable connection between the earphone 2 and the charging box 1 is improved, and the charging stability of the earphone 2 is ensured; when the cover is opened (the upper cover 12 is opened), because the distance between the first magnet 131 and the second magnet 132 becomes far away, the adsorption force between the first magnet 131 and the second magnet 132 disappears, and the magnetic attraction force of the second magnet 132 is reduced or weakened, so that the earphone 2 cancels the external pressure from the upper cover 12, the magnetic attraction force of the second magnet 132 to the earphone 2 is reduced, the attraction force required to be overcome for taking the earphone is very small, and the earphone 2 can be taken out from the charging box 1 more conveniently.

The charging box 1 of the invention is provided with the accommodating groove 112 by the concave formation of the accommodating groove 112 on the surface of the bottom shell 11, so that the earphone 2 is accommodated by the accommodating groove 112, the earphone 2 is convenient to store and charge, the upper cover 12 is rotatably connected with the bottom shell 11, and the accommodating groove 112 is opened or covered by the upper cover 12, so that the storage, protection and charging stability of the earphone 2 are further ensured; by providing the magnet assembly 13, the first magnet 131 of the magnet assembly 13 is provided in the upper cover 12, and the second magnet 132 of the magnet assembly 13 is provided in the mounting cavity 111 of the bottom case 11; when the charging box 1 charges the earphone 2, the upper cover 12 covers the accommodating groove 112 at the moment, so that the first magnet 131 and the second magnet 132 are mutually adsorbed, and the upper cover 12 applies pressure to the earphone 2 in the accommodating groove 112, thereby enhancing the strength of magnetic attraction, reducing contact impedance, improving charging performance and ensuring the charging stability of the earphone 2; when charging is finished, the accommodating groove 112 is opened by the upper cover 12 and the bottom case 11 is kept away, the first magnet 131 is kept away from the second magnet 132, and the earphone 2 is released from the close magnetic attraction state, so that the user can conveniently take the earphone 2, and the earphone 2 using experience of the user is improved.

It can be understood that, in the charging box 1 of the present invention, the magnet is disposed at the lower portion of the existing charging box (that is, the magnetic attraction is 100%), 100% of the magnetic attraction of the magnet to the earphone is utilized, and the bottom case 11 and the upper cover 12 of the charging box 1 are respectively magnetized, that is, the 100% of the magnetic attraction of the magnet at the lower portion of the existing charging box is divided into two parts, for example, on the basis that 30% of the original permanent magnet is retained on the bottom case 11, the remaining 70% of the magnetic attraction is magnetized by the permanent magnet of the upper cover 12 to the soft magnet of the bottom case 11. So when charging box 1 for earphone 2 charges, also when upper cover 12 detained on drain pan 11, the magnet of upper cover 12 gives magnetism for the soft magnet part of drain pan 11, strengthens the intensity of magnetism and inhale, reduces contact impedance, improves the charging performance. When charging is finished and the upper cover 12 is opened, the permanent magnet of the upper cover 12 is far away from the soft magnet part of the bottom shell 11, and the magnetic attraction force applied to the earphone 2 is reduced by 50% -70%, so that a user can conveniently take the earphone.

In an embodiment, the bottom case 11 is further provided with a through hole 113 communicating with the mounting cavity 111, one end of the second magnet 132 is exposed to the through hole 113, and the other end of the second magnet 132 extends toward the receiving groove 112; the earphone 2 is provided with a magnetic attraction 21, and the second magnet 132 is used for attracting the magnetic attraction 21 of the earphone 2 in the accommodating groove 112.

In the present embodiment, as shown in fig. 1, 2 and 4, the through hole 113 is disposed on the surface of the bottom case 11 that is recessed to form the receiving groove 112, so that the through hole 113 is communicated with the mounting cavity 111, and thus the second magnet 132 can be exposed by the through hole 113, so that when the upper cover 12 is fastened on the bottom case 11, and the first magnet 131 is close to the second magnet 132, the first magnet is abutted against the second magnet 132 or the second magnet 132 is conveniently magnetized, so as to improve the magnetic attraction of the second magnet 132.

It can be understood that, through revealing the one end of second magnet 132 in through-hole 113, the other end of second magnet 132 is to the direction of holding tank 112 for the other end of second magnet 132 is located the holding tank 112 one side of notch dorsad at least partially, so after first magnet 131 gives the magnetism for second magnet 132, utilize second magnet 132 and holding tank 112 in earphone 2 magnetism inhale piece 21 mutual absorption, in order to improve the absorption fixed to earphone 2, further ensure earphone 2's charging connection stability.

Optionally, the second magnet 132 is disposed in an arc shape, and the arc shape of the second magnet 132 is matched with the arc shape of the groove wall of the accommodating groove 112. It can be understood that, by arranging the second magnet 132 in a special shape, that is, in an arc shape, the volume of the second magnet 132 is reduced, and the magnetic flux when the first magnet 131 magnetizes the second magnet 132 is increased.

In one embodiment, the receiving slots 112 include two receiving slots 112, the two receiving slots 112 are symmetrically disposed, the through hole 113 is located between the notches of the two receiving slots 112, and the second magnet 132 is located between the two receiving slots 112.

In this embodiment, as shown in fig. 1 to 4, the bottom case 11 is provided with two holding grooves 112 towards one side surface of the upper cover 12, and the two holding grooves 112 are symmetrically disposed, so that the left and right earphones 2 for the user can be conveniently placed and charged respectively, the space can be distributed reasonably, and the charging speed for the two earphones 2 can be increased.

It should be noted that the two receiving grooves 112 are recessed from the bottom case 11 toward the side of the upper cover 12 toward the mounting cavity 111, so that a part of the space in the mounting cavity 111 is located between the notches of the two receiving grooves 112. It can be understood that, by disposing the second magnet 132 in the mounting cavity 111 and between the two receiving slots 112, and when the upper cover 12 is fastened to the bottom shell 11, the first magnet 131 and the second magnet 132 correspond to each other and attract each other, so as to ensure that the pressures applied by the upper cover 12 to the earphones 2 in the two receiving slots 112 are balanced.

Optionally, the through holes 113 include two, the second magnets 132 include two, the two second magnets 132 are symmetrically disposed, one end of each second magnet 132 is exposed at one through hole 113, and the other end of each second magnet 132 extends toward a direction of one accommodating slot 112. So set up, both can guarantee that two second magnets 132 show out in the one end of through-hole 113 and first magnet 131 adsorb each other, and improve adsorption strength, by can make two second magnets 132 keep away from the one end of through-hole 113 respectively to two holding tanks 112 in the fixed effect of absorption of the piece 21 of inhaling of earphone 2.

In this embodiment, the connecting line of the two through holes 113 is parallel to the connecting line of the centers of the two accommodating grooves 112. Optionally, a line connecting the two through holes 113 coincides with a line connecting centers of the two receiving grooves 112.

In one embodiment, as shown in fig. 1 to 4, the upper cover 12 is provided with an avoiding groove 121 corresponding to each accommodating groove 112, and the first magnet 131 is disposed between the two avoiding grooves 121. It can be understood that, by providing the avoiding groove 121 on the upper cover 12, when the upper cover 12 is fastened to the bottom case 11, the portion of the earphone 2 protruding from the surface of the bottom case 11 is accommodated in the avoiding groove 121, and the first magnet 131 and the second magnet 132 are closer to each other, so as to improve the adsorption strength.

It can be understood that, by disposing the first magnet 131 between the two avoiding grooves 121, when the upper cover 12 is fastened on the bottom case 11, the first magnet 131 is opposite to the second magnet 132, so as to improve the magnetic attraction.

In an embodiment, as shown in fig. 1 to 4, a mounting groove 122 is formed on a side of the upper cover 12 facing the receiving groove 112, and the first magnet 131 is received and limited in the mounting groove 122. It can be understood that the installation of the installation groove is beneficial to installing the first magnet 131, and the magnetic adsorption strength of the first magnet 131 is ensured. Optionally, the first magnet 131 has a polygonal or irregular structure such as a square, a circle, an ellipse, a triangle, and the like, which is not limited herein.

In an embodiment, the minimum distance of the first magnet 131 from the headset 2 is more than 20% of the diameter of the headset 2. It can be understood that, by setting the minimum distance between the first magnet 131 and the earphone 2 to be greater than 20% of the diameter of the earphone 2, it is ensured that no interference occurs between the two sides of the earphone 2, and the influence on the earphone 2 caused by the first magnet 131 on the upper cover 12 is avoided, for example, the earphone 2 is attracted by the first magnet 131 on the upper cover 12 when the cover is opened.

Optionally, the minimum distance between the first magnet 131 and the earphone 2 is 21%, 23%, 235%, 28%, 30%, 33%, 35%, 40%, 45%, 50%, etc. of the diameter of the earphone 2, which is not limited herein.

In an embodiment, the minimum distance between the second magnet 132 and the second magnet 132 is greater than 15% of the diameter of the headset 2. It can be understood that, so set up, can guarantee can not mutual interference between two side earphone 2, and adopt the components of a whole that can function independently setting with second magnet 132 on the drain pan 11 to through the special-shaped soft magnetic material of second magnet 132, conduct the magnetic force of first magnet 131 in top to earphone 2 below through soft magnetic, carry out magnetic adsorption.

Optionally, the second magnet 132 is made of special cold-rolled silicon steel with good magnetic conductivity as a soft magnet material, so that leakage of magnetic force is effectively reduced, the quality of the upper cover magnet is reduced, and the service life is long. Optionally, the minimum distance between the second magnet 132 and the second magnet 132 is 16%, 18%, 20%, 23%, 235%, 28%, 30%, 33%, 35%, 40%, 45%, 50%, etc. of the diameter of the earphone 2, which is not limited herein.

In an embodiment, the magnet assembly 13 further includes a third magnet 133, the third magnet 133 is disposed in the mounting cavity 111, the third magnet 133 is disposed below the receiving cavity 112 and spaced apart from the second magnet 132, the earphone 2 is provided with a magnetic attraction member 21, and the third magnet 133 is configured to attract the magnetic attraction member 21 of the earphone 2 in the receiving cavity 112.

In the present embodiment, as shown in fig. 2 to 4, the magnetic member 21 of the earphone 2 includes a first magnetic member 22 and a second magnetic member 23, and the first magnetic member 22 and the second magnetic member 23 may be an integral structure or a separate structure. In order to facilitate the attraction of the earphones 2 by the second and

third magnets

132 and 133, respectively, while avoiding the mutual repulsive force between the second and

third magnets

132 and 133, the first and second

magnetic members

22 and 23 may alternatively be provided in a separate body.

It is understood that the first magnetic member 22 of the earphone 2 is disposed corresponding to an end of the second magnet 132 away from the through hole 133, and the second magnetic member 23 is disposed corresponding to the third magnet 133. That is, when the earphone 2 is placed in the receiving groove 112, the distance between the first magnetic element 22 and the second magnet 132 is the closest, and the distance between the second magnetic element 23 and the third magnet 133 is the closest.

It should be noted that the third magnet 133 is located below the receiving groove 112, that is, the third magnet 133 is located below the side of the receiving groove 112 facing away from the notch. The third magnet 133 is for attracting the second magnetic member 23 of the magnetic attracting member 21 in the headphone 2 to apply an attractive force directed from the upper cover 12 to the bottom case 11 to the headphone 2. So set up, third magnet 133 can adsorb earphone 2 when uncapping (upper cover 12 is opened) to avoid earphone 2 to drop from charging box 1. Simultaneously, earphone 2 leads to the user to confirm the problem of charging box 1 and whether damage because of not brightening with the pilot lamp that charges box 1 contact failure makes when avoiding uncapping.

Since the first magnet 131 and the second magnet 132 are also provided to be attracted to each other in this embodiment, the stability of the electrical connection between the earphone 2 and the charging box 1 is increased by applying pressure to the earphone 2 using the upper cover 12. Therefore, the attractive force between the third magnet 133 and the second magnetic member 23 of the magnetic attracting member 21 can be relatively small, thereby facilitating the taking of the headset 2.

It is understood that the third magnet 133 and/or the magnetically attractive element 21 may also be a magnet or a conductive coil. When the third magnet 133 and the magnetic attraction piece 21 are magnets, no conductive circuit is required to be arranged, the structure is simple, the equipment cost is low, and the later maintenance cost is also low; when any one of the third magnet 133 and the magnetic attraction member 21 is a conductive coil, it can be powered on to provide an attraction force when the cover is closed, so as to improve the stability of the electrical connection between the earphone 2 and the charging box 1, and powered off to cancel the attraction force when the cover is opened, so as to reduce the resistance when the earphone 2 is taken out. Of course, either the third magnet 133 or the magnetic member 21 may be made of a magnetic material such as iron.

The charging box 1 of the present invention and the existing charging box (i.e. only the magnet is arranged at the lower part of the charging box) can be used to draw the following conclusion through practical tests:

(1) Magnetic attraction and earphone taking and placing performance:

the existing charging box: the magnetic force is constant at 0.043N, and the earphone is difficult to grasp.

Charging cartridge 1 of the present invention: the magnetic attraction force after closing the upper cover 12 is 0.055N, the magnetic attraction force after opening the upper cover 12 is 0.011N, and it is easier to grab the earphone 2 after opening the upper cover 12.

(2) And (3) durability analysis: 1.5 ten thousand switch charging box 1 upper cover 12 back, 2 end magnetic force change situations of near earphone:

the existing charging box: 0.031N.

Charging cartridge 1 of the present invention: the magnetic attraction force for closing the upper cover 12 is 0.052N, and the magnetic attraction force for opening the upper cover 12 is 0.0096N. It can be seen that the charging box 1 of the present invention has a magnetic force reduction of less than 95%, within an acceptable range.

(3) Normal charging performance of the headset 2 and the charging box 1:

the existing charging box: when the upper cover 12 is opened, the earphone 2 is in contact with the charging Pin with an impedance of 14.5m Ω.

Charging cartridge 1 of the present invention: when the upper cover 12 is closed, the impedance of the earphone 2 to the charging PIN is 9.2m Ω, and when the upper cover 12 is opened, the impedance of the earphone 2 to the charging PIN is 17.3m Ω.

Therefore, after the charging box 1 is used, the suction force between the charging box 1 and the earphone 2 can be more flexibly designed, and the charging efficiency of the earphone 2 is improved by applying the larger suction force.

(4) The anti-fouling performance analysis, after the charging terminal of the earphone 2 was smeared with oil stain, the effect on the contact impedance was compared (oil stain mimicking the ceruminous substance secreted by the human ear):

the existing charging box: when the upper cover 12 is opened, the earphone 2 contacts the charging Pin with an impedance of 20-23 milliohms.

Charging cartridge 1 of the present invention: when the upper cover 12 is opened, the contact impedance between the earphone 2 and the charging Pin is 10.2-12.5 milliohms; when the upper cover 12 is closed, the earphone 2 contacts the charging Pin with impedance of 22-27 milliohms.

It can be seen that the contact impedance of the dirty earphone 2 in the charging box 1 of the present invention is clearly superior to that of the existing charging box, and the scheme of the charging box 1 of the present invention is more stable and easy to use.

The invention also provides a TWS earphone 100, which comprises an earphone 2 and the charging box 1, wherein the earphone 2 is detachably accommodated in the accommodating groove 112 of the charging box 1. The specific structure of the charging box 1 refers to the foregoing embodiments, and since the TWS headset 100 adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.

It will be appreciated that the headset 2 comprises two headsets, the two headsets 2 corresponding to the left and right ears of the user respectively.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, which are within the spirit of the present invention, are included in the scope of the present invention.

Claims

1. A charging box for charging an earphone, comprising:

2. The charging box of claim 1, wherein the bottom shell is further provided with a through hole communicated with the mounting cavity, one end of the second magnet is exposed to the through hole, and the other end of the second magnet extends towards the direction of the accommodating groove;

3. A charging cartridge according to claim 2, wherein said accommodating grooves comprise two accommodating grooves, said two accommodating grooves are symmetrically disposed, said through hole is located between notches of said two accommodating grooves, and said second magnet is located between said two accommodating grooves.

4. A charging box according to claim 3, wherein said through holes include two, and said second magnets include two, said two second magnets are symmetrically disposed, and one end of each of said second magnets is exposed to one of said through holes, and the other end of each of said second magnets extends toward one of said receiving grooves;

5. A charging box according to claim 3, wherein said upper cover is provided with an avoiding groove corresponding to each of said accommodating grooves, and said first magnet is provided between two of said avoiding grooves.

6. A charging box according to claim 5, wherein a mounting groove is provided on a side of the upper cover facing the receiving groove, and the first magnet is received and retained in the mounting groove.

7. The charging box of any of claims 1 to 6, wherein the first magnet is a minimum distance from the earpiece of greater than 20% of the earpiece diameter;

8. The charging box according to any one of claims 1 to 6, wherein the first magnet is a permanent magnet;

and/or the second magnet is a soft magnet made of a soft magnetic material.

9. The charging box of any one of claims 1 to 6, wherein the magnet assembly further comprises a third magnet disposed in the mounting cavity, the third magnet being spaced from the second magnet and located below the receiving cavity, the earphone being provided with a magnetic attraction, the third magnet being configured to attract the magnetic attraction of the earphone in the receiving cavity;

and/or, the charging box further comprises a charging module, the charging module is arranged in the mounting cavity, and the charging module is used for charging the earphones in the accommodating groove.

10. A TWS headset comprising a headset and a charging cartridge according to any of claims 1 to 9, the headset being removably received in the receiving slot of the charging cartridge.