CN110299736B - Earphone charging box - Google Patents
Earphone charging box Download PDFInfo
- Publication number
- CN110299736B CN110299736B CN201910339274.6A CN201910339274A CN110299736B CN 110299736 B CN110299736 B CN 110299736B CN 201910339274 A CN201910339274 A CN 201910339274A CN 110299736 B CN110299736 B CN 110299736B
- Authority
- CN
- China
- Prior art keywords
- contact
- earphone
- charging box
- hole
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
Abstract
The invention discloses an earphone charging box, comprising: the charging box body comprises an earphone accommodating groove, and a contact penetrating hole is formed in the inner wall of the earphone accommodating groove; a contact mechanism disposed inside the charging box body; the detection mechanism is electrically connected with the contact mechanism; when the detection mechanism detects that the earphone is placed in the earphone accommodating groove, the contact of the contact mechanism is controlled to extend out of the contact through hole; when the detection mechanism detects that the earphone leaves the earphone accommodating groove, the contact of the contact mechanism is controlled to contract from the outside of the contact through hole to the inside of the contact through hole. According to the embodiment of the invention, the charging contact of the earphone charging box is designed into the telescopic contact mechanism, the telescopic of the contact is controlled according to the state of the earphone in or out of the charging box, the contact cannot be contacted with the earphone in the process of the earphone entering or leaving the earphone accommodating groove, the damage to the appearance of the earphone due to scratching is avoided, and meanwhile, the reduction of charging reliability caused by the long-term interference of the contact with the outer wall of the earphone is also avoided.
Description
Technical Field
The invention relates to the technical field of communication, in particular to an earphone charging box.
Background
With the popularization of portable consumer electronics, earphones have been widely used in people's daily life, and especially True Wireless Stereo (TWS) earphones have been dramatically increased in recent years. The TWS earphone comprises an earphone body and a charging box body, and when a consumer does not use the earphone, the earphone can be placed into the charging box for charging; among the prior art, to upright earphone mode of placing, if the contact that charges is in the ear-lobe side, when putting into the earphone box that charges, the outstanding contact that charges of box can have certain interference with the earphone, long-term the use can lead to earphone outward appearance fish tail, the box contact reliability that charges to descend the scheduling problem.
Disclosure of Invention
The embodiment of the invention provides an earphone charging box, which aims to solve the problem that charging performance is influenced by the fact that a charging contact in the earphone charging box is protruded.
In a first aspect, an embodiment of the present invention provides an earphone charging box, including:
the charging box body comprises an earphone accommodating groove, and a contact penetrating hole is formed in the inner wall of the earphone accommodating groove;
a contact mechanism disposed inside the charging box body;
the detection mechanism is electrically connected with the contact mechanism;
when the detection mechanism detects that the earphone is placed in the earphone accommodating groove, the contact of the contact mechanism is controlled to extend out of the contact through hole;
when the detection mechanism detects that the earphone leaves the earphone accommodating groove, the contact of the contact mechanism is controlled to contract from the outside of the contact through hole to the inside of the contact through hole.
Therefore, according to the scheme of the invention, the charging contact of the earphone charging box is designed into the telescopic contact mechanism, the detection mechanism controls the telescopic movement of the charging contact according to the state of the earphone in or out of the earphone charging box, the charging contact cannot contact with the earphone in the process of the earphone entering or leaving the earphone accommodating groove, the damage of the appearance of the earphone due to scratching is avoided, and meanwhile, the reduction of charging reliability caused by the long-term interference of the charging contact with the outer wall of the earphone is also avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 shows a schematic structural view of an earphone charging box according to an embodiment of the present invention;
fig. 2 is a schematic view showing a magnetic pole state of the armature after the coil is energized according to the embodiment of the invention.
Description of reference numerals: 1. the charging box comprises a charging box body 2, a contact mechanism 3 and a detection mechanism; 21. the armature 22, the contact assembly 23, the elastic component 31, the detection switch 32 and the control circuit; 221. housing, 222, contacts.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As illustrated in fig. 1, the present invention provides an earphone charging box, including:
the charging box body 1 comprises an earphone accommodating groove, and a contact through hole is formed in the inner wall of the earphone accommodating groove;
a contact mechanism 2 provided inside the charging box body 1;
a detection mechanism 3 electrically connected to the contact mechanism 2;
when the detection mechanism 3 detects that the earphone is placed in the earphone accommodating groove, the contact of the contact mechanism 2 is controlled to extend out of the contact through hole;
when the detection mechanism 3 detects that the earphone leaves the earphone accommodating groove, the contact of the contact mechanism 2 is controlled to contract from the outside of the contact through hole to the inside of the contact through hole.
In this embodiment, the inner wall of the earphone accommodating groove is provided with a contact through hole through which a contact can extend and retract, the contact mechanism 2 is disposed inside the charging box body 1, and when the earphone is not placed in the charging box, the charging contact on the contact mechanism 2 is located inside the contact through hole, that is, is not exposed out of the earphone accommodating groove. The detection mechanism 3 is used for detecting whether an earphone is placed in the earphone accommodating groove, when the earphone is detected to be placed in the earphone accommodating groove, if the earphone is considered to have a charging requirement, the contact of the contact mechanism 2 is controlled to extend out from the contact through hole to be in contact with a charging contact on the earphone, and charging is achieved; when the detection mechanism 3 detects that the earphone leaves the earphone accommodating groove, the contact of the contact mechanism 2 is controlled to contract to the inner side of the contact through hole to be disconnected with the charging contact on the earphone when the earphone is considered to be charged.
According to the embodiment of the invention, the charging contact of the earphone charging box is designed into the telescopic contact mechanism, the detection mechanism 3 controls the telescopic of the charging contact according to the state of the earphone in or out of the earphone charging box, the charging contact cannot be contacted with the earphone in the process of the earphone entering or leaving the earphone accommodating groove, the damage of the appearance of the earphone due to scratching is avoided, and meanwhile, the charging reliability reduction caused by the long-term interference of the charging contact with the outer wall of the earphone is also avoided.
Specifically, the contact mechanism 2 includes: an armature 21 wound with a coil; a contact assembly 22 connected to the armature 21.
After current is introduced into the coil, a magnetic field is generated around the armature, the armature 21 and the contact assembly 22 can be connected through an elastic component, and after current is introduced into the coil, the magnetic field generated around the armature interacts with the magnetic field of the contact assembly 22 to generate repulsive acting force, so that the contact assembly 22 is driven to move towards the direction close to the contact through hole, and the contact of the contact mechanism 2 penetrates out of the contact through hole and is contacted with the contact of an earphone, so that charging is realized; after the current in the coil is cut off, the magnetic field around the armature 21 disappears, the repulsive force with the contact assembly 22 disappears, and the contact mechanism 2 moves in a direction away from the contact through hole, and the contact of the contact mechanism 2 is disconnected from the contact of the earphone and retracts into the contact through hole.
Wherein the contact assembly 22 comprises: a housing 221; a magnet disposed inside the case 221; and a contact 222 provided outside the housing 221, the contact 222 protruding toward a direction in which the contact passes through the hole. The contact assembly 22 has a magnet disposed therein, one end of the magnet faces the end connected to the armature 21, and the other end of the magnet faces a direction close to the contact 222.
One end of the armature 21 is fixedly connected with the charging box body 1, and the other end is fixedly connected with the shell 221 through an elastic component 23. After current is introduced into the coil, a magnetic field is generated around the armature 21, the magnetic field generated around the armature 21 interacts with the magnetic field of the magnet to generate repulsive acting force, and because one end of the armature 21 is fixedly connected with the charging box body 1, the contact assembly 22 moves towards the direction close to the contact through hole under the repulsive acting force, the contact 222 penetrates out of the contact through hole to be in contact with a contact on an earphone to realize charging, and at the moment, the elastic component 23 is stretched; after the current in the coil is cut off, the magnetic field generated around the armature disappears, the acting force of the magnetic field with the magnet disappears, the elastic component contracts from the stretching state to the original state, the contact assembly 22 is driven to move towards the direction far away from the contact through hole, and the contact 222 contracts to the contact through hole. Optionally, the elastic component 23 is a spring, and the elastic component 23 may also be another component capable of achieving a telescopic function.
In order to generate repulsive force between the magnetic field generated around the armature 21 and the magnetic field of the magnet when current is applied to the coil, specifically, the magnetic pole at the end of the armature 21 connected to the elastic member 23 is the same as the magnetic pole at the end of the magnet facing the elastic member 23 when current is applied to the coil. For example, after the current is applied to the coil, the magnetic pole at the end of the armature 21 connected to the elastic member 23 is an N-pole, and the magnetic pole at the end of the magnet facing the elastic member 23 is also an N-pole; or, after the coil is energized with current, the magnetic pole at the end of the armature 21 connected with the elastic component 23 is an S-pole, and the magnetic pole at the end of the magnet facing the elastic component 23 is also an S-pole, so that the contact assembly 22 can move towards the direction close to the contact through hole under the repulsive force according to the principle that like poles repel each other.
The magnetic pole direction of the armature 21 and the magnetic force between the armature and the magnet after the current is introduced into the coil are related to the direction and the magnitude of the current introduced into the coil. After current is introduced into the coil, the magnetic pole of the armature 21 wound around the coil is as shown in fig. 2, when the switch between the coil and the power supply is closed, that is, current is introduced into the coil, the current direction is set according to the setting shown in fig. 2, the right end of the armature 21 can be determined to be the N pole and the left end to be the S pole according to the ampere law, and the magnetic pole direction of the armature 21 can be changed by changing the current direction.
In order to ensure that the contact assembly 22 can be ejected in the direction of the contact through hole against the pulling force of the elastic component 23 under the repulsive force, after the current is passed through the coil, the magnetic force between the armature 21 and the magnet is greater than the elastic force of the elastic component 23. Alternatively, the difference between the magnetic force between the armature 21 and the magnet to which the current is applied and the maximum elastic force of the elastic member 23 is greater than 45 gf. Assuming that the magnetic force between the armature 21 and the magnet, which is applied with current in the coil, is F1, and the elastic force of the elastic member 23 is F2, F1-F2 > 45gf, which can ensure that the contact 222 on the contact assembly 22 is in full contact with the contact on the earphone, thereby ensuring the reliability of charging.
Specifically, the detection mechanism 3 includes: a detection switch 31 arranged at the bottom of the earphone accommodating groove; a control circuit 32 electrically connected to the detection switch 31;
when the control circuit 32 detects that the detection switch 31 is in a closed state, the control circuit controls the contact of the contact mechanism 2 to extend out of the contact through hole; when the control circuit 32 detects that the detection switch 31 is in the off state, the contact of the contact mechanism 2 is controlled to retract from the outside of the contact through hole to the inside of the contact through hole.
The control circuit 32 is also electrically connected to the coil; when the control circuit 32 detects that the detection switch 31 is in a closed state, the control circuit controls the current to be introduced into the coil; when the control circuit 32 detects that the detection switch 31 is in the off state, it controls to cut off the current in the coil.
In this embodiment, when the control circuit 32 detects that the detection switch 31 is in the closed state, it considers that an earphone is placed in the earphone accommodating groove, and then controls the current to be conducted into the coil, so that a magnetic field is generated around the armature 21, and the magnetic pole at the end of the armature 21 connected with the elastic component 23 is the same as the magnetic pole at the end of the magnet facing the elastic component 23, the contact assembly 22 moves towards the direction close to the contact through hole under the repulsive force, the elastic component 23 is stretched, and the contact 222 extends from the contact through hole and contacts with a contact on the earphone, so as to realize charging; when the control circuit 32 detects that the detection switch 31 is in the off state, it considers that the earphone is taken out from the earphone accommodating groove, and then the control circuit cuts off the current in the coil, the magnetic field around the armature 21 disappears, the contact assembly 22 moves away from the contact through hole under the driving of the contraction of the elastic component 23, and the contact 222 contracts from outside the contact through hole to inside the contact through hole.
Specifically, the detection switch 31 includes a movable contact extending to the inside of the earphone accommodating groove, and a fixed contact matched with the movable contact; the movable contact contacts with the fixed contact when compressed, and the detection switch 31 is in a closed state; the detection switch 31 is in an open state when the movable contact is not compressed.
In the process that the earphone is placed in the earphone accommodating groove, the bottom of the earphone gradually compresses the movable contact inside the earphone accommodating groove until the movable contact is in contact with the fixed contact, namely the detection switch 31 is closed; when the earphone is taken out, the pressure acting on the movable contact gradually disappears, and the movable contact is disconnected from the fixed contact, namely the detection switch 31 is disconnected.
It should be noted that when the control circuit 32 detects the state of the detection switch 31, the on/off of the current in the coil can be controlled by controlling the on/off of the coil and the power supply for supplying power to the coil. The control circuit 32 may also be directly replaced by a power supply, that is, the detection switch 31, the power supply and the coil are connected to form a loop, when the detection switch 31 is closed, the detection switch 31, the power supply and the coil form a closed loop, and current is introduced into the coil; when the detection switch 31 is turned off, a circuit formed by the detection switch 31, the power supply, and the coil is turned off, and no current flows through the coil.
Specifically, the earphone charging box further comprises: and the power supply is connected with the contacts of the contact mechanism 2. In order to realize the charging function of the charging box of the earphone, the contact of the contact mechanism 2 is also connected with a power supply, and after the contact extends out from the contact through hole and is contacted with the contact on the earphone, the current of the power supply is transmitted to the contact of the earphone through the contact of the contact mechanism 2, so that the charging of the earphone is realized.
According to the embodiment of the invention, the charging contact of the earphone charging box is designed into the telescopic contact mechanism, the detection mechanism controls the telescopic movement of the charging contact according to the state of the earphone in or out of the earphone charging box, the charging contact cannot be contacted with the earphone in the process of the earphone entering or leaving the earphone accommodating groove, the damage of the appearance of the earphone due to scratching is avoided, and meanwhile, the charging reliability reduction caused by the long-term interference of the charging contact with the outer wall of the earphone is also avoided.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (8)
1. An earphone charging box, comprising:
the charging box comprises a charging box body (1) and a charging box body, wherein the charging box body comprises an earphone accommodating groove, and a contact penetrating hole is formed in the inner wall of the earphone accommodating groove;
a contact mechanism (2) arranged inside the charging box body (1);
a detection mechanism (3) electrically connected with the contact mechanism (2);
when the detection mechanism (3) detects that the earphone is placed in the earphone accommodating groove, the contact of the contact mechanism (2) is controlled to extend out of the contact through hole;
when the detection mechanism (3) detects that the earphone leaves the earphone accommodating groove, the contact of the contact mechanism (2) is controlled to contract from the outside of the contact passing hole to the inside of the contact passing hole, and the contact mechanism (2) comprises:
an armature (21) wound with a coil;
a contact assembly (22) connected to the armature (21), the contact assembly (22) comprising: a housing (221);
a magnet disposed inside the housing (221); and
a contact (222) disposed outside the housing (221), the contact (222) protruding toward a direction in which the contact passes through the hole.
2. The earphone charging box according to claim 1, wherein one end of the armature (21) is fixedly connected with the charging box body (1), and the other end is fixedly connected with the housing (221) through an elastic member (23).
3. The earphone charging box of claim 2,
after current is introduced into the coil, the magnetic pole at one end of the armature (21) connected with the elastic component (23) is the same as the magnetic pole at one end of the magnet facing the elastic component (23).
4. The earphone charging box according to claim 2, wherein after the current is applied to the coil, the magnetic force between the armature (21) and the magnet is larger than the elastic force of the elastic member (23).
5. An earphone charging box according to claim 1, characterized in that the detection mechanism (3) comprises:
a detection switch (31) arranged at the bottom of the earphone accommodating groove;
a control circuit (32) electrically connected to the detection switch (31);
wherein, when the control circuit (32) detects that the detection switch (31) is in a closed state, the control circuit controls the contact of the contact mechanism (2) to extend out from the contact through hole;
when the control circuit (32) detects that the detection switch (31) is in an open state, the control circuit controls the contact of the contact mechanism (2) to retract from the outside of the contact through hole to the inside of the contact through hole.
6. A headset charging box according to claim 5, characterized in that the detection switch (31) comprises a movable contact extending to the inside of the headset receiving slot, and a stationary contact cooperating with the movable contact;
the movable contact is contacted with the fixed contact when being compressed, and the detection switch (31) is in a closed state; the detection switch (31) is in an open state when the movable contact is not compressed.
7. The earphone charging box according to claim 5, wherein the control circuit (32) is further electrically connected with the coil;
when the control circuit (32) detects that the detection switch (31) is in a closed state, the control circuit controls the current to be introduced into the coil; the control circuit (32) controls to cut off the current in the coil when detecting that the detection switch (31) is in an off state.
8. The earphone charging box of claim 1, further comprising: and the power supply is connected with the contact of the contact mechanism (2).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339274.6A CN110299736B (en) | 2019-04-25 | 2019-04-25 | Earphone charging box |
| PCT/CN2020/080249 WO2020215944A1 (en) | 2019-04-25 | 2020-03-19 | Earphone charging case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910339274.6A CN110299736B (en) | 2019-04-25 | 2019-04-25 | Earphone charging box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110299736A CN110299736A (en) | 2019-10-01 |
| CN110299736B true CN110299736B (en) | 2021-06-25 |
Family
ID=68026609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910339274.6A Active CN110299736B (en) | 2019-04-25 | 2019-04-25 | Earphone charging box |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110299736B (en) |
| WO (1) | WO2020215944A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299736B (en) * | 2019-04-25 | 2021-06-25 | 维沃移动通信有限公司 | Earphone charging box |
| CN111277941B (en) * | 2020-02-28 | 2021-08-31 | 歌尔股份有限公司 | TWS earphone and out-of-box detection device, method and system thereof |
| CN112437377B (en) * | 2020-11-10 | 2022-10-18 | 歌尔科技有限公司 | TWS earphone |
| CN112770210B (en) * | 2021-01-05 | 2023-04-25 | 维沃移动通信有限公司 | Charging box |
| CN112911445B (en) * | 2021-02-01 | 2023-07-14 | 维沃移动通信有限公司 | Earphone charging box and earphone device |
| CN114125628A (en) * | 2021-11-12 | 2022-03-01 | 东莞市实优特电子有限公司 | Earphone capable of switching states |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106617580A (en) * | 2015-09-30 | 2017-05-10 | 苹果公司 | Case for charging and fixing portable listening devices |
| CN208724166U (en) * | 2018-10-17 | 2019-04-09 | 上海功捐健康科技有限公司 | A kind of charging unit customizing bluetooth headset |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8653791B2 (en) * | 2011-04-28 | 2014-02-18 | Nintendo Co., Ltd. | Battery charger for hand-held electronic game device |
| US9843853B2 (en) * | 2015-08-29 | 2017-12-12 | Bragi GmbH | Power control for battery powered personal area network device system and method |
| CN205565770U (en) * | 2016-02-16 | 2016-09-07 | 王斌 | Charging device is inhaled to split type magnetism |
| US10516281B2 (en) * | 2016-09-21 | 2019-12-24 | Otter Products, Llc | Charging apparatus for wireless earphone |
| CN108882088B (en) * | 2018-06-26 | 2019-11-26 | 歌尔智能科技有限公司 | Earphone charging box |
| CN108988742A (en) * | 2018-07-04 | 2018-12-11 | 安徽祥吉汽车服务有限公司 | A kind of quick detachable vehicle intelligent solar recharging base station |
| CN110299736B (en) * | 2019-04-25 | 2021-06-25 | 维沃移动通信有限公司 | Earphone charging box |
-
2019
- 2019-04-25 CN CN201910339274.6A patent/CN110299736B/en active Active
-
2020
- 2020-03-19 WO PCT/CN2020/080249 patent/WO2020215944A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106617580A (en) * | 2015-09-30 | 2017-05-10 | 苹果公司 | Case for charging and fixing portable listening devices |
| CN208724166U (en) * | 2018-10-17 | 2019-04-09 | 上海功捐健康科技有限公司 | A kind of charging unit customizing bluetooth headset |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110299736A (en) | 2019-10-01 |
| WO2020215944A1 (en) | 2020-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110299736B (en) | Earphone charging box | |
| US7786887B2 (en) | Electromagnetic energy converter | |
| CA2569064A1 (en) | Contact device | |
| CN109302853B (en) | Wireless charging device and method | |
| US20200260176A1 (en) | Hearing device charger with insertion/ejection control | |
| SI1968083T1 (en) | Relay | |
| US10541093B2 (en) | Control circuits for self-powered switches and related methods of operation | |
| AU2011295275A1 (en) | Device for detecting and signaling a change in the state of a push button | |
| CN110475171B (en) | Wireless earphone assembly and earphone box assembly | |
| CN108141655B (en) | Smart device with separable body | |
| US8253381B2 (en) | Charging device | |
| US8243380B2 (en) | Electromechanical device for switching an optical lens filter for a camera | |
| KR101980291B1 (en) | Voice coil motor | |
| EP2366191B1 (en) | Electrical generator of pushbutton type | |
| JP3619536B2 (en) | Cordless telephone | |
| US1206699A (en) | Relay. | |
| CN102592900B (en) | Switching device having controllable switch disconnection performance | |
| CN112565955A (en) | Earphone box, earphone and earphone box assembly | |
| JP6058773B2 (en) | Electronic equipment using a power generation input device | |
| KR101703271B1 (en) | Wireless electric power transmission device of clip type comprising battery | |
| CN211350542U (en) | Magnetic tripping system of miniature circuit breaker | |
| CN217216851U (en) | True wireless earphone charging device, assembly and earphone charging kit | |
| EP1122757A3 (en) | Circuit interrupter with a magnetically-induced automatic trip assembly implementing a spring clamp | |
| US8520874B1 (en) | Hearing aid with an operational based switch | |
| JP5656283B2 (en) | Electromagnetic relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |