Charging plug and bone conduction headphones

Abstract

The present application discloses a charging plug and bone conduction headphones, wherein the charging plug includes: a base, a positive terminal and a negative terminal, a magnetic element, a detection terminal and a detection circuit. The positive terminal and the negative terminal are spaced apart on the base; the magnetic element is used to fix the charging plug to another matching charging plug by magnetic adsorption; the detection terminal is set in the spacing area between the positive terminal and the negative terminal, and the spacing distance between the detection terminal and the positive terminal is smaller than the spacing distance between the detection terminal and the negative terminal; the detection circuit is connected to the detection terminal and is used to detect the voltage or voltage change generated by the conductive liquid electrically connecting the detection terminal to the positive terminal and / or the negative terminal during the charging process, thereby generating an alarm signal. In the above manner, the present application can improve the sensitivity of conductive liquid detection.

Description

Technical Field

[0001] The present application relates to the technical field of electronic device charging, and in particular to a charging plug and a bone conduction headset. Background Art

[0002] Wearable electronic devices, such as bone conduction headphones, are popular among consumers due to their ease of use and portability.

[0003] However, since wearable electronic devices are worn directly on the user's body, conductive liquids such as rain or sweat can easily accumulate on the wearable electronic devices after exercise or in a humid environment. Furthermore, when this conductive liquid accumulates on the charging plug of the electronic device, it may adversely affect the charging plug. Summary of the Invention

[0004] The main technical problem solved by this application is to provide a charging plug and bone conduction headphones that can improve the sensitivity of conductive liquid detection.

[0005] To solve the above technical problems, the present application adopts a technical solution: providing a charging plug, comprising: a base, a positive terminal, a negative terminal, a magnetic element, a detection terminal, and a detection circuit. The positive terminal and the negative terminal are spaced apart on the base; the magnetic element is used to secure the charging plug to another matching charging plug through magnetic attraction; the detection terminal is disposed in the spaced region between the positive terminal and the negative terminal, and the distance between the detection terminal and the positive terminal is smaller than the distance between the detection terminal and the negative terminal; and the detection circuit is connected to the detection terminal and is used to detect voltage or voltage changes generated during charging due to the conductive liquid electrically connecting the detection terminal to the positive terminal and / or the negative terminal, thereby generating an alarm signal.

[0006] In order to solve the above technical problems, another technical solution adopted in this application is: to provide a bone conduction headset, which includes an earphone body, and a power receiving plug is provided on the earphone body, and the power receiving plug is the charging plug described above.

[0007] The beneficial effects of the present application are as follows: Unlike the prior art, the detection circuit in the charging connector of the present application is connected to the detection terminal, and is used to detect the voltage or voltage change generated by the conductive liquid electrically connecting the detection terminal to the positive terminal and / or the negative terminal during the charging process, thereby generating an alarm signal, wherein the distance between the detection terminal and the positive terminal is smaller than the distance between the detection terminal and the negative terminal. Because conductive liquid is more likely to corrode the positive terminal in actual application, the placement of the detection terminal close to the positive terminal in the above-mentioned method further enables the detection circuit to detect even when a small amount of conductive liquid connects the positive terminal to the detection terminal, thereby issuing an alarm signal, thereby further improving the detection sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0009] Figure 1 This is a schematic structural diagram of a bone conduction headset in one embodiment of the present application;

[0010] Figure 2 This is a schematic diagram of the partial structure of a bone conduction headset in one embodiment of the present application;

[0011] Figure 3 This is an exploded view of the local structure of the bone conduction earphone in one embodiment of the present application;

[0012] Figure 4 This is a partial cross-sectional view of a bone conduction headset in one embodiment of the present application;

[0013] Figure 5 yes Figure 4 Enlarged view of part A;

[0014] Figure 6 is a cross-sectional view of a charging plug of a bone conduction headset in one embodiment of the present application;

[0015] Figure 7 This is a circuit diagram of a charging plug for a bone conduction headset in one embodiment of the present application;

[0016] Figure 8 This is a top view of a charging plug of a bone conduction headset in one embodiment of the present application;

[0017] Figure 9 This is another top view of the charging plug of the bone conduction headset in one embodiment of the present application;

[0018] Figure 10 This is a schematic diagram of the structure of a charging plug of a charger in one embodiment of the present application;

[0019] Figure 11 This is an exploded view of a charging plug of a charger in one embodiment of the present application;

[0020] Figure 12 is a cross-sectional view of a charging plug of a charger in one embodiment of the present application;

[0021] Figure 13 This is a schematic structural diagram of a bone conduction headset in one embodiment of the present application. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0023] See also Figure 1 , the present application provides a bone conduction headset. Among them, bone conduction is a sound conduction method, which converts sound into mechanical vibrations of different frequencies, and transmits sound waves through the human skull, bony labyrinth, inner ear lymph, spiral organ, auditory nerve, and auditory center. Compared with the classic sound conduction method of generating sound waves through the diaphragm, bone conduction eliminates many steps of sound wave transmission, can achieve clear sound restoration in a noisy environment, and the sound waves will not affect others because of diffusion in the air. The bone conduction headset in this application can be a single-function headset that needs to obtain audio data for playback by connecting to an electronic device, or it can be a headset with other auxiliary functions such as storing audio data, which is not limited here.

[0024] The bone conduction earphones of the present application may include an earphone body 200 and a charger 400. The charger 400 is used to charge the earphone body 200. Specifically, the charger 400 is provided with a charging plug serving as a power supply plug 300, and the earphone body 200 is provided with a charging plug serving as a power receiving plug 100. To charge the earphone body 200, the power supply plug 300 of the charger 400 is connected to the power receiving plug 100 on the earphone body 200, thereby establishing a power connection.

[0025] See also Figures 2 to 6The power receiving plug 100 may include a base 10, a positive terminal 12, a negative terminal 14, a magnetic element 16, a detection terminal 18, and a detection circuit 11. The base 10 may be used to support and secure the other components of the power receiving plug 100. The positive terminal 12, the negative terminal 14, the magnetic element 16, and the detection terminal 18 are spaced apart on the base 10. The detection terminal 18 is located in the space between the positive terminal 12 and the negative terminal 14 and is connected to the detection circuit 11.

[0026] The base 10 may be made of a hard non-magnetic material, such as a polymer material such as polycarbonate (PC) or polyvinyl chloride (PVC), and may specifically include a base body 102 , a separator 104 , a positive electrode mounting post 106 , and a negative electrode mounting post 108 .

[0027] Specifically, the base body 102 may include a circumferential sidewall that surrounds and defines a receiving cavity 10a extending axially along the base body 102. A partition 104 is disposed within the receiving cavity 10a, with its surface perpendicular to the axial direction of the base body 102. This partition 104 divides the receiving cavity 10a into a recessed area 10a1 and a recessed area 10a2 spaced apart along the axial direction of the base body 102. Recessed area 10a1 communicates with the outside world, while recessed area 10a2 may be located within the receiving plug 100. The axial direction of the base body 102 may refer to the direction in which the receiving plug 100 extends, and may specifically coincide with the direction in which the receiving plug 100 and the power supply plug 300 are connected.

[0028] The partition plate 104 is provided with a slot 104 a passing through the recessed area 10 a 1 and the recessed area 10 a 2 . The cross section of the slot 104 a perpendicular to the axial direction of the base body 102 may be in the shape of an elongated strip.

[0029] Furthermore, the positive electrode mounting post 106 and the negative electrode mounting post 108 are respectively protruded on both sides of the slot 104 a and disposed on the surface of the separator 104 facing the recessed area 10 a 1 and spaced apart from each other.

[0030] In this embodiment, the positive electrode mounting column 106 and the negative electrode mounting column 108 are respectively defined with a positive electrode mounting hole 106a and a negative electrode mounting hole 108a, one end of which is connected to the recessed area 10a1. The positive electrode mounting hole 106a and the negative electrode mounting hole 108a both extend axially along the base body 102, and can further extend toward the recessed area 10a2 and penetrate the partition 104, thereby connecting the recessed area 10a1 with the recessed area 10a2.

[0031] In this embodiment, the shapes and / or areas of the cross sections perpendicular to the axial direction of the base body 102 of the positive electrode mounting column 106 and the negative electrode mounting column 108 are different, for example, one is circular and the other is square, or they are other different irregular shapes; or the shapes of the two are the same but the areas are different.

[0032] The positive terminal 12 and the negative terminal 14 correspond to the positive and negative poles of the power supply, respectively. Specifically, both can be columnar and are respectively inserted and fixed in the positive electrode mounting hole 106a and the negative electrode mounting hole 108a, so that the outer end surface 120 of the positive terminal 12 and the outer end surface 140 of the negative terminal 14 are both exposed in the recessed area 10a1, and the inner end surfaces opposite to the outer end surfaces of the two extend to the recessed area 10a2 through the corresponding electrode mounting holes.

[0033] The magnetic member 16 is designed to magnetically attract the power supply plug 300 during charging, thereby securing the receiving plug 100 and the power supply plug 300 together. Specifically, the magnetic member 16 can be positioned within the recessed area 10a2, with the end of the magnetic member 16 facing the power supply plug 300 secured to the side of the partition 104 facing the recessed area 10a2 by means such as bonding or snapping. Thus, during charging, the magnetic member 16 magnetically attracts the corresponding magnetic structure of the power supply plug 300 through the partition 104.

[0034] In one application scenario, the partition 104 is connected to the base body 102 and the recessed area 10a1 is formed only on the side close to the outside, while the recessed area 10a2 is not formed on the side close to the inside. Figure 6 As shown, at this time, the magnetic element 16 can be directly fixedly disposed on the side of the partition 104 away from the recessed area 10a1.

[0035] The magnetic member 16 may be in the shape of a ring, such as a circular ring, a square ring, an elliptical ring, etc. The ring structure has a gap in the middle, and the positive terminal 12 and the negative terminal 14 extend from the recessed area 10a1 into the recessed area 10a2 and can further pass through the magnetic member 16 through the gap.

[0036] Furthermore, the magnetic member 16 can be a magnet, or made of other materials with magnetic attraction, such as iron, cobalt, nickel or their alloys, as long as it can produce magnetic attraction with the corresponding structure of the power plug 300 to fix the two together.

[0037] It should be noted that when a user uses bone conduction headphones, sweat or other conductive liquids (using sweat as an example) may accumulate on the power receiving plug 100 of the headphone body 200. During the charging process, the accumulated sweat can easily cause the positive terminal 12 and the negative terminal 14 to short-circuit, forming an electrolytic cell, which can corrode the positive and negative terminals 12, 14. Therefore, the accumulation of sweat on the power receiving plug 100 should be avoided as much as possible. If sweat accumulates there, or if there is a risk of accumulated sweat shorting the positive and negative terminals 12, 14, the user should be promptly reminded to wipe the sweat away.

[0038] Based on the above-mentioned actual usage, the present application further provides a detection circuit 11 and a detection terminal 18 connected to each other within the power receiving plug 100. When the detection circuit 11 detects that sweat electrically connects the detection terminal 18 with the positive terminal 12 and / or the negative terminal 14 during charging, generating a voltage or a voltage change between the detection terminal 18 and the positive terminal 12 and / or the negative terminal 14, the detection circuit 11 generates an alarm signal to remind the user to wipe off the sweat. The alarm signal can be a vibration, a sound, an indicator light, or the like.

[0039] Specifically, the shape of the detection terminal 18 matches the shape of the slot 104a on the partition 104, and is inserted into the slot 104a, so that the end surface 180 of the detection terminal 18 facing the recessed area 10a1 is exposed in the space between the positive terminal 12 and the negative terminal 14 in the recessed area 10a1. The end surface 180 of the detection terminal 18 facing the recessed area 10a1 and the side surface 1042 of the partition 104 facing the recessed area 10a1 are flush with each other. It should be noted that the flushness between the end surface 180 and the side surface 1042 is not strictly limited here. For example, within a range that meets the requirements of use, the end surface 180 can be recessed a certain distance relative to the side surface 1042 toward the recessed area 10a2, or protruded a certain distance toward 10a1, or the end surface 180 can be tilted at a certain angle relative to the side surface 1042. Furthermore, one end of the detection terminal 18 away from the recessed area 10a1 extends and is exposed in the recessed area 10a2, and is connected to the detection circuit 11 located in the recessed area 10a2. The circuit structure for detection and charging in the power receiving plug 100 can be as follows: Figure 7 As shown in .

[0040] The charging plug further includes a control circuit 13, a charging circuit 15, a light emitting diode 17, and a buzzer 19. The detection circuit 11, charging circuit 15, light emitting diode 17, and buzzer 19 are all coupled to the control circuit 13. The charging circuit 15 further extends to the positive terminal 12 and the negative terminal 14, and the detection circuit 11 further extends to the detection terminal 18. When sweat is present in the power receiving plug 100 and the detection terminal 18 is connected to the positive terminal 12 and / or the negative terminal 14, the detection circuit 11 is turned on. When the detection circuit 11 detects that the voltage generated between the detection terminal 18 and the positive terminal 12 and / or the negative terminal 14 exceeds a preset value, the control circuit 13 controls the light emitting diode 17 and / or the buzzer 19 to sound an alarm. Alternatively, when the detection circuit 11 detects that the voltage change between the detection terminal 18 and the positive terminal 12 and / or the negative terminal 14 exceeds a preset value, the control circuit 13 controls the light emitting diode 17 and / or the buzzer 19 to sound an alarm.

[0041] Through the above-mentioned setting, the detection terminal 18 is set in the interval area between the positive terminal 12 and the negative terminal 14, thereby playing a certain blocking role for the two electrode terminals. On the one hand, when sweat resides in the recessed area 10a1, the sweat preferentially establishes a connection between the detection terminal 18 and the positive terminal 12 or the negative terminal 14, so as to send an alarm signal to remind the user in time.

[0042] The detection terminal 18 may be arranged in a plate shape, with the largest surface being the main surface 182, and the main surface 182 being arranged along the extending direction of the slot 104a. The main surface 182 of the detection terminal 18 may be perpendicular to the center line connecting the outer end surface 120 of the positive terminal 12 and the outer end surface 140 of the negative terminal 14 (e.g., Figure 8 ), or it can be tilted relative to the center line (as shown Figure 9 As shown), as long as the positive terminal 12 and the negative terminal 14 can be separated, the specific setting can be based on actual needs and is not limited here.

[0043] Furthermore, the distance between the detection terminal 18 and the positive terminal 12 can be smaller than the distance between the detection terminal 18 and the negative terminal 14. Since the detection terminal 18 is a plate-like structure, it has two oppositely disposed first main surfaces 1822 and second main surfaces 1824. Therefore, specifically, the shortest distance d1 between the outer end surface 120 of the positive terminal 12 and the first main surface 1822 of the detection terminal 18 can be smaller than the shortest distance d2 between the outer end surface 140 of the negative terminal 14 and the second main surface 1824 of the detection terminal 18.

[0044] It should be pointed out that in actual use, sweat is more likely to corrode the positive terminal 12. Therefore, placing the detection terminal 18 close to the positive terminal 12 can further enable the detection circuit 11 to detect even when less sweat connects the positive terminal 12 to the detection terminal 18, and to issue an alarm signal, thereby further improving the sensitivity of sweat detection.

[0045] Please refer to further Figures 10 to 12 The power supply plug 300 may include a plug body 30, a magnetic member 31, a base 32, a wire 33, a positive terminal 34, and a negative terminal 36. The magnetic member 31, base 32, positive terminal 34, and negative terminal 36 are disposed on the plug body 30 to mate with and secure the power receiving plug 100. The wire 33 is connected to the plug body 30 to connect the power supply plug 300 to a power source.

[0046] Specifically, the plug body 30 can be a shell, which is used to accommodate and fix components such as the magnetic element 31, base 32, wire 33, positive terminal 34 and negative terminal 36 of the power plug 300 to protect the above structure and make it an integral structure.

[0047] The base 32 is used to support and secure the other components of the power plug 300. Specifically, it may include a base body 320, a separator 322, an annular flange 324, and positive and negative mounting posts 326 and 328. Similar to the base 10 of the power receiving plug 100, the base 32 can be made of a hard, non-magnetic material such as PC or PVC. The base body 320, separator 322, annular flange 324, positive and negative mounting posts 326 and 328 may be integrally formed or separately and then secured together.

[0048] Specifically, the base body 320 is provided with a support surface 3201, from which a partition 322 and an annular flange 324 are both protruding. The annular flange 324 is disposed on the periphery of the support surface 3201 and cooperates with the base body 320 to form a recessed area 32a. The two opposing ends of the partition 322 are connected to opposite sides of the annular flange 324, thereby dividing the recessed area 32a into a first sub-recessed area 32a2 and a second sub-recessed area 32a4, respectively located on opposite sides of the partition 322.

[0049] The positive electrode mounting column 326 and the negative electrode mounting column 328 can also be protruded on the support surface 3201, and are respectively located in the first sub-recessed area 32a2 and the second sub-recessed area 32a4, so that the two are spaced apart on both sides of the partition 322, and the positive electrode mounting column 326 and the negative electrode mounting column 328 are both spaced apart from the annular flange 324.

[0050] Specifically, the positive electrode mounting post 326 and the negative electrode mounting post 328 are respectively provided with a positive electrode mounting hole 326a and a negative electrode mounting hole 328a that communicate with the recessed area 32a. The positive electrode mounting hole 326a and the negative electrode mounting hole 328a may both extend perpendicular to the support surface 3201 and further penetrate the support surface 3201 in a direction away from the recessed area 32a.

[0051] Furthermore, the positive terminal 34 and the negative terminal 36 correspond to the positive and negative poles of the power source, respectively. Both are cylindrical and can be inserted into the positive and negative mounting holes 326a and 328a, respectively. The outer end surface 340 of the positive terminal 34 and the outer end surface 360 of the negative terminal 36 are exposed within the first sub-recessed area 32a2 and the second sub-recessed area 32a4, respectively, to establish electrical connections with the positive terminal 12 and the negative terminal 14 of the power receiving plug 100, respectively. Furthermore, the positive terminal 34 and the negative terminal 36 can further extend through the support surface 3201 into the interior of the power supply plug 300, with their other ends connected to the charging circuit within the power supply plug 300.

[0052] The magnetic component 31 can be fixedly connected to the magnetic component 16 of the power receiving plug 100 via magnetic attraction, thereby stably charging the earphone body 200. The magnetic component 31 may include a first sub-magnetic component 310 and a second sub-magnetic component 312, spaced apart on the base body 320. The inner end surface 3102 of the first sub-magnetic component 310 and the inner end surface 3122 of the second sub-magnetic component 312 can be further fixed to the support surface 3201 of the base body 320 by a method such as bonding or snapping, and spaced apart on either side of the partition 322, thereby positioning the first sub-magnetic component 310 within the first sub-recessed area 32a2 and the second sub-magnetic component 312 within the second sub-recessed area 32a4. Specifically, the first sub-magnetic component 310 is disposed in the gap between the positive mounting post 326 and the annular flange 324 , and the second sub-magnetic component 312 is disposed in the gap between the negative mounting post 328 and the annular flange 324 .

[0053] Furthermore, the axial directions of the first sub-magnetic component 310 and the second sub-magnetic component 312 are parallel to each other, and are respectively provided with a first notch 310a and a second notch 312a opposite to each other. Accordingly, the first notch 310a corresponds to the first sub-recessed area 32a2, and the second notch 312a corresponds to the second sub-recessed area 32a2. The axial directions of the first sub-magnetic component 310 and the second sub-magnetic component 312 can be perpendicular to the support surface 3201, that is, the height direction of the first sub-magnetic component 310 and the second sub-magnetic component 312.

[0054] In one application scenario, the outer shapes of the positive mounting post 326 and the negative mounting post 328 match the first notch 310a and the second notch 312a, respectively, while the outer shapes of the first sub-magnetic component 310 and the second sub-magnetic component 312 match the shape of the inner wall of the annular flange 324. Consequently, the positive mounting post 326 and the negative mounting post 328 are respectively inserted into the first notch 310a and the second notch 312a, with the first sub-magnetic component 310 tightly fixed between the annular flange 324 and the positive mounting post 326, and the second sub-magnetic component 312 tightly fixed between the annular flange 324 and the negative mounting post 328. Of course, in other application scenarios, the first sub-magnetic component 310 and the second sub-magnetic component 312 do not necessarily need to be tightly fixed, and for example, they can be fixed with a gap, etc., as required.

[0055] Furthermore, since the positive terminal 34 and the negative terminal 36 are respectively arranged in the positive mounting hole 326a and the negative mounting hole 328a corresponding to the positive mounting column 326 and the negative mounting column 328, and the positive mounting column 326 and the negative mounting column 328 are respectively inserted into the first notch 310a and the second notch 312a, the positive terminal 34 and the negative terminal 36 are respectively arranged in the first notch 310a of the first sub-magnetic component 310 and the second notch 312a of the second sub-magnetic component 312, and are respectively spaced apart from the first sub-magnetic component 310 and the second sub-magnetic component 312.

[0056] Specifically, the first sub-magnetic component 310 and the second sub-magnetic component 312 can each be two magnetic ring segments, i.e., both can be segments of a ring. For example, they can be segments of a circular ring, a square ring, an elliptical ring, or the like, or they can be segments of two different rings, such as one being a circular ring segment and the other a square ring segment, etc., without limitation. However, it should be noted that the first sub-magnetic component 310 and the second sub-magnetic component 312 can be consistent in shape with the magnetic component 16 of the power receiving plug 100. For example, if the magnetic component 16 is an elliptical ring, the first sub-magnetic component 310 and the second sub-magnetic component 312 can be segments of the corresponding elliptical ring, thereby corresponding at least in shape to the magnetic component 16. Specifically, in this embodiment, the first sub-magnetic component 310 and the second sub-magnetic component 312 are two elliptical ring segments of the same shape, for example, they can be two symmetrically arranged elliptical ring segments. At this time, the opening of the elliptical ring segment of the first sub-magnetic component 310 is the first notch 310a, and the opening of the elliptical ring segment of the second sub-magnetic component 312 is the second notch 312a.

[0057] Furthermore, in the charging state, the end surfaces of the first and second sub-magnetic components 310 and 312 facing the power receiving plug 100 are outer end surfaces, while the end surfaces facing away from the power receiving plug 100 are inner end surfaces. The outer end surfaces are disposed opposite the corresponding inner end surfaces. Furthermore, a first notch 310a extends axially along the first sub-magnetic component 310 and connects the outer end surface 3104 and inner end surface 3102 of the first sub-magnetic component 310, respectively. A second notch 312a extends axially along the second sub-magnetic component 312 and connects the outer end surface 3124 and inner end surface 3122 of the second sub-magnetic component 312, respectively.

[0058] Furthermore, the first sub-magnetic component 310 and the second sub-magnetic component 312 can be magnets, or other materials with magnetic attraction. In an application scenario, both are magnets, and a conductive metal layer can be further formed on the periphery of the magnet to protect the magnet. The magnetic polarity of the outer end face of the first sub-magnetic component 310 and the magnetic polarity of the outer end face of the second sub-magnetic component 312 can be the same or different, as long as they can meet the corresponding adsorption with the magnetic component 16.

[0059] As described above, the partition 322 is disposed in the separation area between the first sub-magnetic component 310 and the second sub-magnetic component 312 to separate the first sub-magnetic component 310 from the second sub-magnetic component 312. The separation area between the first sub-magnetic component 310 and the second sub-magnetic component 312 refers to the separation area between the end of the first sub-magnetic component 310 facing the second sub-magnetic component 312 and the end of the second sub-magnetic component 312 facing the first sub-magnetic component 310, as well as the separation area between the first notch 310a and the second notch 312a.

[0060] It should be noted here that in some application scenarios, the distance between the positive terminal 34 and the negative terminal 36 is respectively greater than the distance between the positive terminal 34 and the first sub-magnetic component 310 and the distance between the negative terminal 36 and the second sub-magnetic component 312. As mentioned above, a conductive metal layer is provided on the outer surface of the magnetic component 31. When charging the earphone body 200, if the magnetic component 31 is a coherent whole rather than two separated parts, the retained sweat may easily connect the positive terminal 34 and the negative terminal 36 to the nearby magnetic component 31, thereby causing the positive terminal 34 and the negative terminal 36 to be connected together through the magnetic component 31, thereby short-circuiting the positive terminal 12 and the negative terminal 14, and the positive terminal 34 and the negative terminal 36. Therefore, in the above method, the magnetic component 31 is divided into two parts, the first sub-magnetic component 310 and the second sub-magnetic component 312, and the first sub-magnetic component 310 and the second sub-magnetic component 312 are further separated by the partition 322, which can weaken the mutual influence between the first sub-magnetic component 310 and the second sub-magnetic component 312, thereby reducing the adverse effects on the charging of the earphone body 200 caused by the mutual influence between the two.

[0061] Furthermore, the outer end surface 3221 of the partition 322 can be flush with the outer end surface 3104 of the first sub-magnetic component 310 and the outer end surface 3124 of the second sub-magnetic component 312, and the height of the positive mounting post 326 and the negative mounting post 328 relative to the support surface 3201 can be less than the height of the first sub-magnetic component 310 and the second sub-magnetic component 312 relative to the support surface 3201. As a result, recesses are formed at the positions corresponding to the positive mounting post 326 and the negative mounting post 328 to respectively correspond to and accommodate the positive mounting post 106 and the negative mounting post 108 of the power receiving plug 100. It should be pointed out that there is no strict limitation on the flushness between the outer end face 3221 of the partition 322 and the outer end face 3104 of the first sub-magnetic component 310 and the outer end face 3124 of the second sub-magnetic component 312. For example, within the scope of meeting the use requirements, the outer end face 3221, the outer end face 3104 and the outer end face 3124 can be inclined at a certain angle, or form an undulating concave-convex structure, etc.

[0062] Specifically, the first sub-magnetic component 310 and the second sub-magnetic component 312 can further cooperate with the partition 322 to form a first connector 30a defined by the first sub-magnetic component 310 and the partition 322, and a second connector 30b defined by the second sub-magnetic component 312 and the partition 322. The first connector 30a and the second connector 30b are respectively arranged along the axis of the first sub-magnetic component 310 and the second sub-magnetic component 312. The first connector 30a is at least partially formed by the first notch 310a, and the second connector 30b is at least partially formed by the second notch 312a.

[0063] It should be noted that the shapes of the first and second receptacles 30a, 30b respectively match the shapes of the positive and negative mounting posts 106, 108 of the power receiving plug 100, thereby respectively receiving the positive and negative mounting posts 106, 108 of the power receiving plug 100 and securing the power receiving plug 100 to the power supply plug 300. When the positive and negative mounting posts 106, 108 are respectively inserted into the first and second receptacles 30a, 30b, the detection terminal 18 aligns with the partition 322, the outer end surface 120 of the positive terminal 12 and the outer end surface 140 of the negative terminal 14 align with the outer end surface 340 of the positive terminal 34 and the outer end surface 360 of the negative terminal 36, respectively, and abut against each other to form a passageway, and the first and second sub-magnetic members 310, 312 are respectively inserted into the recessed area 10a1 of the power receiving plug 100. Specifically, they are respectively inserted into the spacing areas between the base body 102 and the positive electrode mounting column 106 and the negative electrode mounting column 108, so that the magnetic attraction component 16 and the magnetic attraction component 31 correspond to each other and are adsorbed together by the partition 104, so that the positive electrode mounting column 106 and the negative electrode mounting column 108 are more firmly inserted, and the outer end face 120 of the positive terminal 12 and the outer end face 140 of the negative terminal 14 are in more stable and sufficient contact with the outer end face 340 of the positive terminal 34 and the outer end face 360 of the negative terminal 36 respectively.

[0064] Furthermore, the cross-sectional areas and / or shapes of the first and second connector holes 30a, 30b perpendicular to the axial direction of the first and second sub-magnetic components 310, 312 may differ. For example, the cross-sectional shapes of the first and second connector holes 30a, 30b perpendicular to the axial direction of the first and second sub-magnetic components 310, 312 may be the same or similar, but the cross-sectional area of the first connector hole 30a perpendicular to the first sub-magnetic component 310 is smaller than the cross-sectional area of the second connector hole 30b perpendicular to the axial direction of the second sub-magnetic component 312. Correspondingly, the positive and negative mounting posts 106, 108 match the shapes and / or areas of the first and second connector holes 30a, 30b, respectively. Therefore, the cross-sectional area of the positive mounting post 106 perpendicular to the axial direction of the base body 102 is smaller than the cross-sectional area of the negative mounting post 108 perpendicular to the axial direction of the base body 102.

[0065] In this embodiment, the cross-sectional areas and shapes of the first sub-magnetic component 310 and the second sub-magnetic component 312 perpendicular to the axial directions of the first sub-magnetic component 310 and the second sub-magnetic component 312 are consistent. Therefore, the corresponding first notch 310a and the second notch 312a are consistent in cross-sectional areas and shapes perpendicular to the axial directions of the first sub-magnetic component 310 and the second sub-magnetic component 312. Specifically, the position of the partition 322 between the first sub-magnetic component 310 and the second sub-magnetic component 312 can be adjusted to increase or decrease the spacing area between the first sub-magnetic component 310 or the second sub-magnetic component 312 and the partition 322, so that the cross-sectional area of the first connector 30a perpendicular to the first sub-magnetic component 310 is smaller than the cross-sectional area of the second connector 30b perpendicular to the axial direction of the second sub-magnetic component 312. Alternatively, in one application scenario, the partition 322 is centrally arranged in the spacing area between the first sub-magnetic component 310 and the second sub-magnetic component 312, wherein the partition 104 is further provided with a third notch 322a on the side facing the second sub-magnetic component 312, and the third notch 322a cooperates with the second notch 312a to form a second connector 30b, so that the area of the cross section of the first connector 30a perpendicular to the first sub-magnetic component 310 is smaller than the area of the cross section of the second connector 30b perpendicular to the axial direction of the second sub-magnetic component 312.

[0066] In this manner, the positive electrode mounting post 106 and the negative electrode mounting post 108 can only be correspondingly inserted into the first and second receptacles 30a, 30b. This not only ensures foolproof connection between the receiving plug 100 and the power supply plug 300, but also prevents users from forcibly inserting the power supply plug 300 and the receiving tap together when confused about the proper connection, thereby protecting the plugs to a certain extent.

[0067] Further, see Figure 13 The wire 33 is arranged parallel or obliquely between the wire outlet direction B relative to the plug body 30 and the outer end surface C of the magnetic member 16 facing the power receiving plug 100. The wire outlet direction B is the extending direction of the root of the wire 33 connected to the plug body 30 in the natural state.

[0068] In actual use, there is a situation where the direction of the wire 33 exiting the plug body 30 is aligned with the direction of insertion of the power supply plug 300 and the power receiving plug 100. In this case, the power supply plug 300 and the power receiving plug 100 can be disconnected only by overcoming the attractive force between them. However, the attractive force required for the connection between the two is usually relatively weak. Therefore, the connection between the two is easily broken, which is not conducive to charging.

[0069] In this embodiment, the direction of connection between the power supply plug 300 and the power receiving plug 100 is perpendicular to the outer end surface of the magnetic element 31 facing the power receiving plug 100. Therefore, the direction of the wire 33 exiting the plug body 30 is perpendicular to, or angled towards, the connection direction between the power supply plug 300 and the power receiving plug 100. In this case, disconnecting the power supply plug 300 and the power receiving plug 100 requires not only overcoming the attractive force between them but also overcoming the friction between the magnetic element 31 and the inner wall of the recessed area 10a1 of the power receiving plug 100. This prevents the power supply plug 300 and the power receiving plug 100 from being easily disconnected, thereby improving charging effectiveness and efficiency.

[0070] Specifically, in one embodiment, the angle between the wire 33, with respect to the outlet direction B of the plug body 30, and the outer end surface of the magnetic element 31 facing the power receiving plug 100, is less than 30 degrees, and can be, for example, 0 degrees, 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, etc. The smaller the angle, the greater the force required to disconnect the power supply plug 300 from the power receiving plug 100. The specific angle can be selected based on actual needs.

[0071] Specifically, the plug body 30 includes a side surface 301. When the power supply plug 300 is connected to the power receiving plug 100, the side surface 301 faces the power receiving plug 100 and is closest to the power receiving plug 100. The magnetic member 31 protrudes from the side surface 301 of the plug body 30.

[0072] Furthermore, the opening edge of the recessed area 10a1 of the power receiving plug 100 has an edge point D closest to the connection between the wire 33 and the plug body 30. The shortest distance between the side surface 301 and the edge point D is a, and the projection size of the magnetic element 31 in the wire outlet direction B is b, where 5 ≤ b / a ≤ 10. Specifically, b / a can be 5, 6, 7, 8, 9, 10, etc. In one application scenario, a is 0-3 mm, such as 0, 1 mm, 1.6 mm, 2 mm, 3 mm, etc.; b is 8-12 mm, such as 8 mm, 9 mm, 9.4 mm, 10 mm, 11 mm, 12 mm, etc. The specific setting can be based on actual needs and is not specifically limited here.

[0073] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A charging plug, characterized in that: The charging plug comprises: base; A positive terminal and a negative terminal are spaced apart and arranged on the base; a magnetic member for securing the charging plug to another matching charging plug by magnetic attraction, the magnetic member being an annular structure with a gap in the middle, the positive terminal and the negative terminal passing through the gap through the magnetic member; a detection terminal disposed in a spacing region between the positive terminal and the negative terminal, wherein a spacing distance between the detection terminal and the positive terminal is smaller than a spacing distance between the detection terminal and the negative terminal; A detection circuit is connected to the detection terminal and is used to detect the voltage or voltage change generated by the conductive liquid electrically connecting the detection terminal with the positive terminal and / or the negative terminal during the charging process, thereby generating an alarm signal.

2. The charging plug according to claim 1, characterized in that: The base is provided with a first recessed area, and the positive terminal and the negative terminal are spaced apart and arranged in the first recessed area.

3. The charging plug according to claim 2, characterized in that: The base includes a base body and a partition, wherein the base body is provided with a accommodating cavity extending along the axial direction of the base body, and the partition is arranged in the accommodating cavity, for dividing the accommodating cavity into the first recessed area and the second recessed area arranged at intervals along the axial direction of the base body, the magnetic attraction part is arranged in the second recessed area, and the positive terminal, the negative terminal and the detection terminal further extend from the first recessed area to the second recessed area.

4. The charging plug according to claim 3, characterized in that: The detection terminal is arranged in a plate shape, and the shortest distance between the outer end surface of the positive terminal and the main surface of the detection terminal is smaller than the shortest distance between the outer end surface of the negative terminal and the main surface of the detection terminal.

5. The charging plug according to claim 4, characterized in that: The main surface of the detection terminal is perpendicular to a center line connecting the outer end surface of the positive terminal and the outer end surface of the negative terminal, or is arranged obliquely relative to the center line.

6. The charging plug according to claim 3, characterized in that The partition is provided with a slot, the detection terminal is inserted into the slot, and the end surface of the detection terminal facing the first recessed area is flush with the side surface of the partition facing the first recessed area.

7. The charging plug according to claim 2, characterized in that: The base includes a base body, a partition, a positive electrode mounting column and a negative electrode mounting column, wherein the base body is provided with a accommodating cavity extending along the axial direction of the base body, the partition is connected to the base body, and then cooperates with the base body to form the first recessed area, the positive electrode mounting column and the negative electrode mounting column are protrudingly provided on the surface of the partition facing the first recessed area, the positive electrode mounting column and the negative electrode mounting column are respectively provided with a positive electrode mounting hole and a negative electrode mounting hole, and the positive terminal and the negative terminal are respectively inserted and fixed in the positive electrode mounting hole and the negative electrode mounting hole.

8. The charging plug according to claim 7, characterized in that: The cross-sections of the positive electrode mounting post and the negative electrode mounting post perpendicular to the axial direction of the base body have different shapes and / or areas, thereby achieving foolproof connection with the other charging plug.

9. The charging plug according to claim 8, characterized in that: The cross-sectional area of the positive electrode mounting post is smaller than the cross-sectional area of the negative electrode mounting post, and the detection terminal is centrally arranged between the positive electrode mounting post and the negative electrode mounting post.

10. A bone conduction headset, characterized in that: The bone conduction earphone includes an earphone body, and a power receiving plug is provided on the earphone body. The power receiving plug is the charging plug according to any one of claims 1 to 9.

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