EP4693760A1

EP4693760A1 - Direct current socket

Info

Publication number: EP4693760A1
Application number: EP25306252.5A
Authority: EP
Inventors: Youliang ZHANG; Yun Li
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2024-08-09
Filing date: 2025-07-31
Publication date: 2026-02-11
Also published as: CN222940315U

Abstract

Embodiments of the present disclosure provides a direct current socket. The direct current socket comprises a housing; a positive wiring assembly coupled to the housing and comprises a terminal section and an insertion sleeve section separated from each other; the arc extinguishing assembly coupled to a location of conductive connection between the terminal section and the insertion sleeve section and adapted to generate a magnetic field at least covering the location of conductive connection; and a moving contact assembly coupled to the housing and adapted to be driven by a ground pin of a plug inserted into the direct current socket to rotate relative to the housing so as to establish the conductive connection between the terminal section and the insertion sleeve section after a positive pin of the plug is inserted into the insertion sleeve section.

Description

FIELD

Example embodiments of the present disclosure generally relate to the field of household appliances, and in particular, to a direct current socket.

BACKGROUND

A direct current socket (DC socket) is an electrical socket for connecting a direct current power source. Since there is no periodic change in the direct current, that is, there is no zero-crossing point in the direct current, during a process of plugging in and pulling out a plug, an arc between the plug and the socket burns for a long time, thereby damaging the socket and the equipment connected to it.
Therefore, how to avoid arc generation between the direct current socket and the plug and ensure that the generated arc can be quickly and effectively extinguished has become a technical problem to be solved urgently in a current technical field of direct current sockets.

SUMMARY

An object of the present disclosure is to provide a direct current socket to at least partially solve the above problems and/or other potential problems existing in conventional direct current sockets.
In a first aspect of the present disclosure, a direct current socket is provided. The direct current socket comprises a housing; a positive wiring assembly, coupled to the housing and comprising a terminal section and an insertion sleeve section separated from each other; an arc extinguishing assembly coupled to a location of conductive connection between the terminal section and the insertion sleeve section and adapted to generate a magnetic field at least covering the location of conductive connection; and a moving contact assembly coupled to the housing and adapted to be driven by a ground pin of a plug inserted into the direct current socket to rotate relative to the housing so as to establish the conductive connection between the terminal section and the insertion sleeve section after a positive pin of the plug is inserted into the insertion sleeve section.
In embodiments according to the present disclosure, by arranging the terminal section and the insertion sleeve section of the positive wiring assembly separated from each other, it is possible to precisely control conduction and disconnection of the circuit. When the circuit is switched on and off to generate an arc, a uniform magnetic field generated by the arc extinguishing assembly can quickly act on the arc, so that the arc is extinguished in a short time, the damage of the arc to the socket and connecting equipment is greatly reduced, the service life of the socket is extended, and the safety of use is improved.
Meanwhile, the moving contact assembly can be driven by the ground pin of the plug to rotate relative to the housing, so that the conductive connection between the terminal section and the insertion sleeve section is ensured only after the positive pin of the plug is coupled with the insertion sleeve section, the action timing of circuit connection is ensured, and the stability and reliability of the circuit connection are further ensured. Other benefits will be described below in connection with corresponding embodiments.
In some embodiments, the direct current socket further includes: a resetting member disposed between the housing and the moving contact assembly to provide a force for disconnecting the conductive connection between the terminal section and the insertion sleeve section.
In some embodiments, the moving contact assembly includes a conducting member including a pair of moving contacts adapted to be respectively coupled to the terminal section and the insertion sleeve section.
In some embodiments, the moving contact assembly further includes: an insulating member arranged to be connected to the conducting member, and including: a pair of first rotating portions respectively coupled to the housing; and an abutting portion adapted to be abutted by the ground pin to overcome a force of the resetting member to drive the moving contact assembly to rotate around a rotating shaft connecting the pair of first rotating portions.
In some embodiments, the arc extinguishing assembly includes: a fixing member coupled to the housing; a permanent magnet coupled to a middle portion of the fixing member and located between the terminal section and the insertion sleeve section; and a pair of magnetic conductors arranged in an extending direction of the fixing member and respectively coupled to two ends of the permanent magnet, so that a magnetic field between the pair of magnetic conductors at least covers the location of conductive connection of the terminal section and the insertion sleeve section.
In some embodiments, each of the pair of magnetic conductors includes: a terminal magnetic conductive portion arranged such that a magnetic field between the terminal magnetic conductive portions of the pair of magnetic conductors covers the location of conductive connection of the terminal section; and an insertion sleeve magnetic conductive portion arranged such that a magnetic field between the insertion sleeve magnetic conductive portions of the pair of magnetic conductors covers the location of conductive connection of the insertion sleeve section.
In some embodiments, the conducting member is coupled to the insulating member by injection molding, welding or riveting.
In some embodiments, the direct current socket further includes: a negative wiring assembly coupled to the housing to be adapted to form an electrical loop with the positive wiring assembly via the negative wiring assembly when a plug is inserted into the direct current socket.
In some embodiments, the direct current socket further includes: a ground wiring assembly coupled to the housing and arranged to align with the abutting portion on the ground pin, so that the ground pin drives the moving contact assembly to rotate during insertion of the ground pin into the ground wiring assembly.
It should be understood that content described in this content section is not intended to limit key features or important features of embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will be readily understood from the following description.

BRIEF DESCRIPTION OF DRAWINGS

The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent with reference to the following detailed description taken in conjunction with the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

FIG. 1 illustrates a schematic structural diagram of a direct current socket according to some embodiments of the present disclosure;
FIG. 2 illustrates a schematic structural diagram of a moving contact assembly at switching-off position according to some embodiments of the present disclosure;
FIG. 3 illustrates a schematic structural diagram of a moving contact assembly at switching-on position according to some embodiments of the present disclosure;
FIG. 4 illustrates a schematic structural diagram of a moving contact assembly according to some embodiments of the present disclosure;
FIGS. 5 and 6 illustrate schematic structural diagrams of an arc extinguishing assembly according to some embodiments of the present disclosure;
FIG. 7 illustrates a schematic structural diagram of a moving contact assembly at switching-off position in which a plug is not inserted into a direct current socket according to some embodiments of the present disclosure;
FIG. 8 illustrates a schematic structural diagram of a moving contact assembly at switching-off position after a plug is inserted into a direct current socket according to some embodiments of the present disclosure; and
FIG. 9 illustrates a schematic structural diagram of a moving contact assembly at switching-on position after a plug is inserted into a direct current socket according to some embodiments of the present disclosure.

DETAILED DESCRIPTION

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the disclosure are illustrated in the drawings, it should be understood that the disclosure may be implemented in various forms and should not be construed as limited to embodiments set forth herein, but rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for example purposes only, and are not intended to limit the scope of the present disclosure.
In the description of embodiments of the present disclosure, the term "including" and the like should be understood to include "including but not limited to". The term "based on" should be understood to be "based at least in part on". The terms "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may also be included below. The terms "first," "second," etc. may refer to different or identical objects. Other explicit and implicit definitions may also be included below.
As mentioned briefly above, there is a problem with arc generation between the plug and the socket. In terms of arc extinguishing, there is a significant difference between direct current and alternating current. Since the alternating current has the characteristic of zero-crossing point. During a switched-off operation, the arc is usually extinguished at the zero-crossing point of the current. For example, for the case of alternating current 250 VAC, 6A, the maximum arc burning time is approximately half a cycle, that is, 10 ms.
However, there is no zero-crossing point in the direct current, which results in a significant increase in arc burning time. For example, under the conditions of direct current 250 VDC and 5A, the arc burning time can reach 26.8 ms.
If the problem of arc extinguishing between the direct current socket and the plug cannot be effectively solved, contacts between the socket and the plug can be severely worn by the arc burning for a long time during each switching-off operation, and meanwhile, the plastic around the contacts can be severely ablated due to high temperature. For example, in some DC-powered electronic devices, since the arc fails to extinguish in time, the contact that contacts the plug in the socket can age rapidly, and the service life of the device is reduced. For another example, in a power system, a long-time arc may cause a serious safety accident such as a fire.
In order to solve or at least partially solve the above problems or other potential problems of the direct current socket of the conventional solution, embodiments of the present disclosure provide a direct current socket solution. According to the scheme of embodiments of the present disclosure, the direct current socket comprises a housing, a positive wiring assembly, an arc extinguishing assembly and a moving contact assembly, so that an efficient and stable circuit connection and disconnection function is achieved.
Specifically, the positive wiring assembly is coupled to the housing, and the positive wiring assembly includes a terminal section and an insertion sleeve section separated from each other. Further, the arc extinguishing assembly is coupled to a location of conductive connection between the terminal section and the insertion sleeve section, and is adapted to generate a magnetic field at least covering the location of conductive connection. Further, the moving contact assembly is coupled to the housing and is adapted to be driven by a ground pin of a plug inserted into the direct current socket to rotate relative to the housing so as to establish the conductive connection between the terminal section and the insertion sleeve section after a positive pin of the plug is inserted into the insertion sleeve section.
In this way, the arc extinguishing effect can be improved through the arc extinguishing assembly, the damage of the arc to the socket is reduced, and the service life and safety of the socket are ensured. Meanwhile, the moving contact assembly can be driven by the ground pin of the plug to rotate relative to the housing, so that the conductive connection is ensured to be established after the positive pin of the plug is inserted into the insertion sleeve section. By precisely controlling the circuit's conduction timing, the stability and reliability of electrical connection are improved. Therefore, the direct current socket can ensure safe and stable power transmission.
Example structures of the direct current socket 100 will be described below in conjunction with FIGS. 1-9. The concept of the present disclosure will be described below mainly in the case of the direct current socket 100 of the power socket, and it should be understood that the case of having other sockets applied to direct current devices is also similar, and will not be separately described hereinafter. In daily life, sockets such as direct current socket 100 are essential electronic devices for us.
Specifically, the direct current socket 100 includes a housing 110, a positive wiring assembly 120, an arc extinguishing assembly 130, and a moving contact assembly 140.
Further, the housing 110 may serve as external support and protection structures for the direct current socket 100.
Further, the positive wiring assembly 120 is coupled to the housing 110, and includes a terminal section 121 and an insertion sleeve section 122 separated from each other. The two parts are separated when the plug is not fully inserted into the direct current socket 100, and wait for a subsequent connection operation.
Further, the arc extinguishing assembly 130 includes a fixing member 1301, a permanent magnet 1302, and a pair of magnetic conductors 1303. Specifically, the fixing member 1301 is coupled to the housing 110 to provide a stable installation for the permanent magnet 1302 and the pair of magnetic conductors 1303. Further, the permanent magnet 1302 is disposed in the middle of the fixing member 1301 and located between the terminal section 121 and the insertion sleeve section 122. The pair of magnetic conductors 1303 are respectively coupled to two ends of the permanent magnet 1302 in the extending direction A of the fixing member 1301. The permanent magnet 1302 enables the magnetic field generated between the pair of magnetic conductors 1303 to cover a location of the conductive connection between the terminal section 121 and the insertion sleeve section 122. This magnetic field may help to quickly extinguish the arc during the current switching process, and may ensure safe use of the direct current socket 100. For example, the fixing member 1301 may include an H-shaped housing.
Further, the moving contact assembly 140 is coupled to the housing 110. The moving contact assembly 140 can be driven by a ground pin 102 of a plug inserted into the direct current socket 100 to rotate relative to the housing 110. After the positive pin 101 of the plug is inserted into the insertion sleeve section 122, the moving contact assembly 140 establishes the conductive connection between the terminal section 121 and the insertion sleeve section 122.
During a process of the plug being inserted in or pulled out from the direct current socket 100, the moving contact assembly 140 is driven by the ground pin 102 of the plug. Specifically, the moving contact assembly 140 switches between a switching-on position where the terminal section 121 is connected to the insertion sleeve section 122 and a switching-off position where the terminal section 121 is separated from the insertion sleeve section 122. Moreover, the action of the moving contact assembly 140 has predetermined timing requirements. The terminal section 121 and the insertion sleeve section 122 will only come into contact after the positive pin 101 of the plug is in contact with the insertion sleeve section 122; and before the positive pin 101 of the plug is separated from the insertion sleeve section 122, the terminal section 121 and the insertion sleeve section 122 have already been separated.
Exemplarily, in practical applications, when a user inserts a plug into the direct current socket 100, first, the positive pin 101 contacts the insertion sleeve section 122, and then the ground pin 102 pushes the moving contact assembly 140 to rotate to the switching-on position to achieve circuit conduction. When the plug is pulled out, the moving contact assembly 140 rotates to the switching-off position under the action of the resetting member 170 (which will be described in detail below), and then the positive pin 101 is separated from the insertion sleeve section 122 to ensure the safe disconnection of the circuit.
Therefore, by setting an action sequence during the process of the plug being inserted in or pulled out, the direct current socket 100 can effectively ensure the safety and reliability of the direct current socket 100 during use, thereby reducing potential hazards caused by arc.
As shown in FIG. 1, in some embodiments, the direct current socket 100 further includes a ground wiring assembly 150 and a negative wiring assembly 160.
Specifically, the negative wiring assembly 160 is coupled to the housing 110. When the plug is inserted into the direct current socket 100, the positive pin 101 of the plug is coupled to the positive wiring assembly 120, the negative pin of the plug is coupled to the negative wiring assembly 160, and a complete electrical loop can be formed when the negative wiring assembly 160 and the positive wiring assembly 120 cooperate with each other.
Exemplarily, when the plug is inserted into the direct current socket 100, the current flows out from the positive wiring assembly 120, passes through the external device, and then flows back through the negative wiring assembly 160, thereby achieving the transmission of electric energy and the normal operation of the device.
Continuing with the ground wiring assembly 150, the ground wiring assembly 150 is coupled to the housing 110, and the ground wiring assembly 150 is arranged to align with the abutting portion 1412 on the ground pin 102, so that the ground pin 102 drives the moving contact assembly 140 to rotate during insertion of the ground pin 102 into the ground wiring assembly 150. Specifically, after the plug is inserted into the direct current socket 100, the ground pin 102 can abut against the abutting portion 1412 via the ground wiring assembly 150. In this process, the force applied by the ground pin 102 is sufficient to overcome the force of the resetting member 170, thereby driving the moving contact assembly 140 to rotate around the rotating shaft connecting the pair of first rotating portions 1411.
Exemplarily, in practical applications, the ground pin 102 of the plug is accurately in contact with the ground wiring assembly 150, and transmits the force to the abutting portion 1412 through the ground wiring assembly 150. The force can be accurately and effectively transmitted, thereby ensuring that the moving contact assembly 140 can rotate according to a predetermined path to achieve the conduction of the circuit.
The ground wiring assembly 150 in embodiments of the present disclosure can ensure that the force transmission between the ground pin 102 and the abutting portion 1412 is not interfered. Even in frequent plugging and unplugging operations or complex working environments, reliable connection and force transmission effects can always be maintained. Further, the ground pin 102 can provide a stable driving force for the action of the moving contact assembly 140, thereby ensuring the normal operation of the direct current socket 100 and the safety of the circuit.
Therefore, the ground wiring assembly 150 can ensure effective interaction between the ground pin 102 of the plug and the moving contact assembly 140, and ensure that the direct current socket 100 works normally.
In some embodiments, the direct current socket 100 further includes a resetting member 170. The resetting member 170 is disposed between the housing 110 and the moving contact assembly 140. For example, in some embodiments, the resetting member 170 may include a spring.
Specifically, the resetting member 170 may provide a force for disconnecting the conductive connection between the terminal section 121 and the insertion sleeve section 122. In a normal state, the resetting member 170 is in a energy-storing state. It can be understood that the normal state refers to a state where a plug is not inserted into the direct current socket 100.
For example, after the plug is pulled out from the socket, the force accumulated by the resetting member 170 can quickly act on the moving contact assembly 140, ensuring that the conductive connection between the terminal section 121 and the insertion sleeve section 122 is quickly and effectively disconnected.
Therefore, the resetting member 170 provides additional safeguard for the safe operation of the direct current socket 100, and enhances its reliability and stability.
As shown in FIGS. 2-4, in some embodiments, the moving contact assembly 140 includes a conducting member 142. The conducting member 142 has a pair of moving contacts 1421. Through the rotation of the moving contact assembly 140, the pair of moving contacts 1421 can respectively make contact with the static contacts 123 on the terminal section 121 and the insertion sleeve section 122, thereby conducting the terminal section 121 and the insertion sleeve section 122. It should be noted that the conducting member 142 is a conductive member, and the electrical connection between the terminal section 121 and the insertion sleeve section 122 may be implemented through the conductive member.
Exemplarily, during a process of the plug being inserted into the direct current socket 100, the pair of moving contacts 1421 will accurately contact the static contacts of the terminal section 121 and the insertion sleeve section 122 along with the action of the moving contact assembly 140, thereby achieving the conductive connection between the terminal section 121 and the insertion sleeve section 122. When the plug is pulled out, the moving contact 1421 is separated from the static contacts of the terminal section 121 and the insertion sleeve section 122 along with the plug, and the conductive connection is switched off.
It can be understood that the coupling accuracy between the pair of moving contacts 1421 and the static contacts 123 on the terminal section 121 and the insertion sleeve section 122 directly affects the stability and reliability of the conductive connection of the direct current socket 100. Therefore, the pair of moving contacts 1421 and the two static contacts 123 need to have good conductivity and wear resistance, so as to ensure that stable performance can still be maintained during frequent plugging and unplugging operations.
In some embodiments, the moving contact assembly 140 further includes an insulating member 141. The insulating member 141 is configured to be connected to the conducting member 142.
Specifically, the insulating member 141 includes a pair of first rotating portions 1411 and an abutting portion 1412. The pair of first rotating portions 1411 are respectively arranged on two sides of the body of the insulating member 141 for respectively coupling to the housing 110 to provide a support and a rotating fulcrum for rotation of the moving contact assembly 140.
Further, the abutting portion 1412 is configured to be abutted by the ground pin 102. When the plug is inserted into the direct current socket 100, the ground pin 102 abuts against the abutting portion 1412, thereby generating a force sufficient to overcome the force of the resetting member 170. For example, the abutting portion 1412 may include a planar structure or a curved structure, which is not specifically limited in embodiments of the present disclosure.
Exemplarily, in practical operation, when the plug is gradually inserted into the socket, the ground pin 102 contacts the abutting portion 1412 and applies pressure. The pressure can overcome the force provided by the resetting member 170 to disconnect the conductive connection between the terminal section 121 and the insertion sleeve section 122, and drive the moving contact assembly 140 to rotate around the axis of the rotating shaft of the pair of first rotating portions 1411, thereby achieving the electrical connection between the pair of moving contacts 1421 of the conducting member 142 and the static contacts of the terminal section 121 and the insertion sleeve section 122, and implementing the circuit conduction.
During a process of the plug being pulled out, as the abutting force of the ground pin 102 against the abutting portion 1412 is decreased until the abutting force disappears, the force of the resetting member 170 regains dominance, and drives the moving contact assembly 140 to rotate, thereby achieving disconnection of the conductive connection.
Thus, it can be ensured that the moving contact assembly 140 can accurately and stably achieve the conduction and disconnection of the circuit when the plug is inserted into and pulled out.
In some embodiments, the conducting member 142 and the insulating member 141 of the moving contact assembly 140 may be coupled by injection molding, welding or riveting.
Specifically, the injection molding process can tightly combine the conducting member 142 and the insulating member 141 to form a stable whole. For example, during a process of injection molding, a molten insulating material (for example, plastic) may be sufficiently connected to the conducting member 142 to ensure that the connection between the two is firm and seamless. Injection molding coupling can effectively prevent the conducting member 142 and the insulating member 141 from being relatively displaced or loosened during use, thereby ensuring normal operation and stability of the moving contact assembly 140, and generating the moving contact assembly 140 in batches. Therefore, the conducting member 142 and the insulating member 141 can be tightly coupled by injection molding, thereby improving the reliable operation of the direct current socket 100.
Additionally or alternatively, the conducting member 142 and the insulating member 141 of the moving contact assembly 140 may also be coupled by screwing, referring to FIG. 4. For example, a bolt may be used to connect the conducting member 142 and the insulating member 141. A connection manner between the conducting member 142 and the insulating member 141 is not specifically limited in embodiments of the present disclosure.
Additionally or alternatively, the conducting member 142 and the insulating member 141 of the moving contact assembly 140 may also be coupled by welding or riveting, which is not specifically limited in embodiments of the present disclosure.
As shown in FIG. 5 and FIG. 6, in some embodiments, magnetic poles of the permanent magnet 1302 in the arc extinguishing assembly 130 are arranged in a predetermined direction.
During the process of frequent plugging in and pulling out the plug, whenever an arc is generated at the location of conductive connection between the terminal section 121 and the insertion sleeve section 122, the magnetic pole arrangement can quickly respond, can play an arc extinguishing role, and reduces the risk of damage of the arc to internal components of the socket and the connecting equipment.
It can be understood that permanent magnet arc blowing is a method for extinguishing an arc in an electrical device. The permanent magnet arc blowing uses the magnetic field generated by the permanent magnet 1302 to affect the motion and development of the arc, thereby achieving rapid arc extinguishing.
Specifically, the magnetic field generated by the permanent magnet 1302 has a specific direction and strength. When a circuit is disconnected and an arc is generated, charged particles in the arc are subjected to Lorentz force in the magnetic field. Due to the existence of the magnetic field, the charged particles are pushed and change the direction of motion, thereby elongating the arc.
Exemplarily, in the direct current circuit, after the arc is elongated, the length of the arc increases, resulting in an increase in arc resistance and a decrease in current, thereby reducing the energy of the arc. At the same time, the magnetic field can also cause the arc to move rapidly to leave the contact area, reducing burning and damage to the contact.
For another example, the magnetic field generated by the permanent magnet 1302 through coupling the pair of magnetic conductors 1303 enables the arc to be distributed more spatially, which reduces the temperature and density of the arc, and accelerates the cooling and extinguishing speed of the arc.
In some embodiments, when a current is switched on and off at the location of the conductive connection between the terminal section 121 and the insertion sleeve section 122 to generate an arc, due to the directional distribution of the magnetic lines between the pair of magnetic conductors, the arc will be subjected to a force in a direction perpendicular to the magnetic lines and move away from the permanent magnet 1302, thereby accelerating the extinguishing speed of the arc. Therefore, the consistency and stability of the arc extinguishing effect can be ensured. Whether at the terminal section 121 or the insertion sleeve section 122, the arc can be effectively controlled and eliminated under magnetic force.
Therefore, the arc extinguishing assembly 130 can ensure reliable arc extinguishing of the direct current socket 100, thereby improving the overall performance and safety of the direct current socket 100.
In some embodiments, in the arc extinguishing assembly 130, each of the pair of magnetic conductors 1303 includes a terminal magnetic conductive portion 1304 and an insertion sleeve magnetic conductive portion 1305. The magnetic field formed between the terminal magnetic conductive portions 1304 of the pair of magnetic conductors1303 can at least cover the location of conductive connection of the terminal section 121. The magnetic field between the insertion sleeve magnetic conductive portions 1305 of the pair of magnetic conductors 1303 can at least cover the location of conductive connection of the insertion sleeve section 122.
Exemplarily, when the current is switched on and off at the location of conductive connection of the terminal section 121, the magnetic field generated between the terminal magnetic conductive portions 1304 of the pair of magnetic conductors1303 can effectively constrain and control the arc possibly generated, quickly extinguish the arc, and ensure the stability and safety of the conductive connection of the terminal section 121.
For another example, when the current is switched on and off at the location of conductive connection of the insertion sleeve section 122, the magnetic field generated between the insertion sleeve magnetic conductive portions 1305 of the pair of magnetic conductors 1303 can effectively constrain and control the arc possibly generated, extinguishing the arc quickly and ensuring the stability and safety of the conductive connection of the insertion sleeve section 122.
Therefore, by partitioning the magnetic field coverage in this manner, efficient and targeted arc extinguishing can be performed at different locations of conductive connection of the direct current socket 100 in a targeted manner, thereby improving working reliability and safety of the direct current socket 100.
The arc extinguishing assembly 130 according to embodiments of the present disclosure may be applied to various direct current sockets 100 to at least partially solve the above problems. It should be understood that the arc extinguishing assembly 130 according to the embodiments of the present disclosure may also be applied to other electrical components, and embodiments of the present disclosure are not limited thereto.
As shown in FIGS. 7 to 9, the concept of the present disclosure will be described below using an example of the moving contact assembly 140 switching between the switching-off position and the switching-on position. It should be understood that the examples of the switching-off position and the switching-on position are merely examples and are not intended to limit the scope of the present disclosure.
The process of switching the moving contact assembly 140 from the switching-off position to the switching-on position will be described below in conjunction with FIGS. 7 to 9.
Referring to FIG. 7, when the plug is not inserted into the direct current socket 100, the moving contact assembly 140 is at the switching-off position under the action of the resetting member 170, that is, the pair of moving contacts 1421 of the conducting member 142 are separated from the static contacts 123 of the terminal section 121 and the insertion sleeve section 122.
Referring to FIG. 8, as the plug is inserted into the direct current socket 100, the moving contact assembly 140 remains at the switching-off position under the action of the resetting member 170 before the ground pin 102 contacts the abutting portion 1412. At the same time, the positive pin 101 has been in contact with the insertion sleeve section 122 and the negative pin has been in contact with the negative wiring assembly 160.
With continued reference to FIG. 9, the plug continues to be inserted into the direct current socket 100, the ground pin 102 presses the abutting portion 1412, the moving contact assembly 140 rotates to the switching-on position, and the resetting member 170 continues to be compressed. If the moving contact assembly 140 is rotated to the point where the moving contacts 1421 of the conducting member 142 make contact with the static contacts 123 of both the terminal section 121 and the insertion sleeve section 122, the conducting member 142 then electrically connects the terminal section 121 and the insertion sleeve section 122.
The process of switching the moving contact assembly 140 from the switching-on position to the switching-off position will be described below in conjunction with FIGS. 7 to 9.
Referring to FIG. 9, in a case where the plug is not pulled out from the direct current socket 100, the ground pin 102 continuously abuts against the abutting portion 1412, the resetting member 170 is in a compressed state, and the moving contact assembly 140 is at the switching-on position.
When the plug starts to be pulled out, under the action of the elastic force of the resetting member 170, the moving contact assembly 140 gradually returns, the moving contact assembly 140 is at the switching-on position, and the resetting member 170 is still compressed.
Referring to FIG. 8, the plug continues to be pulled out, and the resetting member 170 releases energy and drives the moving contact assembly 140 to the switching-off position, that is, the moving contact 1421 of the conducting member 142 does not contact the static contact 123 of the terminal section 121 and the insertion sleeve section 122. While the moving contact assembly 140 is at the switching-off position, the positive pin 101 is not separated from the insertion sleeve section 122 and the negative pin is not separated from the negative wiring assembly 160. In other words, the moving contact assembly 140 has already been at the switching-off position before the positive pin 101 of the plug is disengaged from the insertion sleeve section 122.
Referring to FIG. 7, when the plug is completely disengaged from the direct current socket 100, the moving contact assembly 140 is at the switching-off position under the action of the resetting member 170, that is, the pair of moving contacts 1421 of the conducting member 142 are completely separated from the static contacts 123 of the terminal section 121 and the insertion sleeve section 122.
Implementations of the present disclosure have been described above, and the above description is example, not exhaustive, and is not limited to the disclosed implementations. Many modifications and alterations will be apparent to those of ordinary skill in the art without departing from the scope of the illustrated implementations. The selection of terms as used herein is intended to best explain the principles of various implementations, practical applications or improvements to technology in the market, or to enable others of ordinary skill in the art to understand various implementations disclosed herein.

Claims

A direct current socket, characterized by comprising:
a housing (110);

a positive wiring assembly (120) coupled to the housing (110) and comprising a terminal section (121) and an insertion sleeve section (122) separated from each other;

an arc extinguishing assembly (130) coupled to a location of conductive connection between the terminal section (121) and the insertion sleeve section (122) and adapted to generate a magnetic field at least covering the location of conductive connection; and

a moving contact assembly (140) coupled to the housing (110) and adapted to be driven by a ground pin (102) of a plug inserted into the direct current socket to rotate relative to the housing (110), so as to establish the conductive connection between the terminal section (121) and the insertion sleeve section (122) after a positive pin (101) of the plug is inserted into the insertion sleeve section (122).
The direct current socket of claim 1, characterized by further comprising:
a resetting member (170) disposed between the housing (110) and the moving contact assembly (140) to provide a force for disconnecting the conductive connection between the terminal section (121) and the insertion sleeve section (122).
The direct current socket of claim 1 or 2, characterized in that the moving contact assembly (140) comprises:
a conducting member (142) comprising a pair of moving contacts (1421) adapted to be respectively coupled to the terminal section (121) and the insertion sleeve section (122).
The direct current socket of claim 3, characterized in that the moving contact assembly (140) further comprises:
an insulating member (141) arranged to be connected to the conducting member (142), and comprising:
a pair of first rotating portions (1411) respectively coupled to the housing (110); and

an abutting portion (1412) adapted to be abutted by the ground pin (102) to overcome a force of the resetting member (170) to drive the moving contact assembly (140) to rotate around a rotating shaft connecting the pair of first rotating portions (1411) .
The direct current socket of any of claims 1 to 4, characterized in that the arc extinguishing assembly (130) comprises:
a fixing member (1301) coupled to the housing (110);

a permanent magnet (1302) coupled to a middle of the fixing member (1301) and located between the terminal section (121) and the insertion sleeve section (122); and

a pair of magnetic conductors (1303) arranged in an extending direction (A) of the fixing member (1301) and respectively coupled to two ends of the permanent magnet (1302), so that a magnetic field between the pair of magnetic conductors (1303) at least covers the location of conductive connection of the terminal section (121) and the insertion sleeve section (122).
The direct current socket of claim 5, characterized in that each of the pair of magnetic conductors (1303) comprises:
a terminal magnetic conductive portion (1304) arranged such that a magnetic field between the terminal magnetic conductive portions (1304) of the pair of magnetic conductors (1303) covers the location of conductive connection of the terminal section (121); and

an insertion sleeve magnetic conductive portion (1305) arranged such that a magnetic field between the insertion sleeve magnetic conductive portions (1305) of the pair of magnetic conductors (1303) covers the location of conductive connection of the insertion sleeve section (122).
The direct current socket of claim 4, characterized in that the conducting member (142) is coupled to the insulating member (141) by injection molding, welding or riveting.
The direct current socket of any of claims 1 to 7, characterized by further comprising:
a negative wiring assembly (160) coupled to the housing (110) to be adapted to form an electrical loop with the positive wiring assembly (120) via the negative wiring assembly (160) when a plug is inserted into the direct current socket.
The direct current socket of claim 4 or 7, characterized by further comprising:
a ground wiring assembly (150) coupled to the housing (110) and arranged to align with the abutting portion (1412) on the ground pin (102) so that the ground pin (102) drives the moving contact assembly (140) to rotate during insertion of the ground pin (102) into the ground wiring assembly (150).