Direct current arc extinguishing socket
By designing an auxiliary socket and a position switch in the DC socket to control the activation of the arc extinguishing component, the problem of the arc being difficult to extinguish during the disconnection process of the DC plug and socket is solved, thus improving the safety and service life of the socket.
Patent Information
- Application Number
- CN202520012167.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-03
AI Technical Summary
DC plugs and sockets are prone to generating electric arcs during disconnection, which are difficult to extinguish automatically, leading to material ablation and fire risks.
A DC arc-extinguishing socket was designed. By using an auxiliary socket and a position switch during plug insertion and removal, the arc-extinguishing component is controlled to start and extinguish the arc. The socket includes a first socket component, a second socket component, an auxiliary socket, and an arc-extinguishing component. The operation of the arc-extinguishing component is controlled by switching the position switch.
Effective arc extinguishing improves the safety and lifespan of the socket, and reduces the risk of material ablation and fire.
Smart Images
Figure CN223871815U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a DC arc-extinguishing socket. Background Technology
[0002] With economic development and social progress, people are placing increasingly higher demands on energy, making the search for new energy sources an urgent issue facing humanity. New energy sources, such as solar power, are gradually entering home and office settings. Since solar cells generate direct current (DC), the gradual promotion of DC plugs and sockets is imperative.
[0003] DC plugs and sockets are the main ways to connect DC electrical equipment to DC power. With the rapid development of DC power supply systems, the application of DC sockets and plugs is becoming increasingly widespread. However, DC plugs and sockets are prone to generating electric arcs during disconnection. Because DC power does not have a self-ignition zero-crossing point like AC power, once a DC arc is generated, it is difficult to extinguish automatically. Furthermore, the temperature of the arc can reach several thousand degrees Celsius, easily causing material erosion. This directly affects the service life of the DC socket and may even cause a fire, resulting in personal injury and property damage. Utility Model Content
[0004] The purpose of this utility model is to overcome at least one defect of the prior art and provide a DC arc extinguishing socket.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A DC arc-extinguishing socket includes a socket for inserting a plug. The socket includes a first socket assembly, a second socket assembly, an auxiliary socket, a position switch, and an arc-extinguishing assembly. The socket includes a first socket corresponding to the first socket assembly and a second socket corresponding to the second socket assembly. The first socket assembly is disposed corresponding to the first socket, and the second socket assembly and the auxiliary socket are disposed corresponding to the second socket.
[0007] During the process of inserting the plug into the socket, the second pin of the plug first contacts the auxiliary sleeve and the first pin of the plug contacts the first sleeve assembly, and then the second pin contacts the second sleeve assembly; during the process of pulling the plug out of the socket, the second pin first disengages from the second sleeve assembly, and then the second pin disengages from the auxiliary sleeve and the first pin disengages from the first sleeve assembly.
[0008] The position switch is configured to close when or after the second pin contacts the auxiliary socket and before it contacts the second socket assembly, and to open when or before the second pin disengages from the auxiliary socket and after it disengages from the second socket assembly;
[0009] The arc extinguishing component is configured to stop arc extinguishing in response to the closing of the position switch and to start arc extinguishing in response to the opening of the position switch.
[0010] Optionally, an insulating actuator is also included, which pushes the insulating actuator before the second pin contacts the second socket assembly, or when or after the second pin is inserted into the auxiliary socket, so that the insulating actuator drives the position switch to switch from an open state to a closed state.
[0011] Optionally, the insulating drive member is provided with a drive ramp that extends into the auxiliary sleeve. When or after the second pin is inserted into the auxiliary sleeve, the insulating drive member is pushed out of the auxiliary sleeve by the drive ramp, so that the insulating drive member drives the position switch to switch from the open state to the closed state.
[0012] Optionally, the position switch includes a moving contact and a stationary contact that cooperate with each other. The moving contact is driven to cooperate with the insulating drive member. When the insulating drive member moves under the action of the second pin, it can drive the moving contact to deform and contact the stationary contact. When the interaction between the insulating drive member and the second pin is eliminated, the moving contact returns to its original state and separates from the stationary contact, and the moving contact drives the insulating drive member to reset.
[0013] Optionally, it also includes a pressure plate, the insulating drive component is a slider slidably disposed on the pressure plate, the moving contact includes a moving contact contact portion and a moving contact fixing portion fixed on the pressure plate, the stationary contact is fixed on the pressure plate, and the auxiliary sleeve, the slider, the moving contact contact portion of the moving contact and the stationary contact are arranged sequentially along the sliding direction of the slider.
[0014] Optionally, the slider includes a slider body, and the slider body has a slider inclined surface extending into the auxiliary sleeve on the side facing the auxiliary sleeve. The slider body has slider wings protruding on both sides along the slider sliding direction. The pressure plate has a groove protruding to cooperate with the slider. The groove has a stop sidewall corresponding to the slider wing. The stop sidewall is located on the path of the slider wing moving towards the slider reset direction.
[0015] Optionally, the movable contact portion is a straight structure perpendicular to the sliding direction of the slider. The movable contact fixing portion includes an arc-shaped piece and an L-shaped piece. One end of the movable contact portion is disposed opposite to the stationary contact portion, and the middle part of the movable contact portion is disposed opposite to the slider. The arc-shaped piece is connected between the other end of the movable contact portion and one end of the L-shaped piece. The pressure plate has a raised first limiting groove that mates with the L-shaped piece. The other end of the L-shaped piece extends out of the first limiting groove for electrical connection to the arc extinguishing assembly.
[0016] Optionally, the length direction of the stationary contact piece is perpendicular to the sliding direction of the slider. The middle part of the stationary contact piece is raised towards the contact portion of the moving contact piece, and the pressure plate is provided with a second limiting groove that cooperates with the stationary contact piece. The end of the contact portion of the stationary contact piece extends out of the second limiting groove and is disposed opposite to the contact portion of the moving contact piece. The end of the stationary contact piece away from the fixed portion of the moving contact piece extends out of the second limiting groove for electrical connection to the arc extinguishing assembly.
[0017] Optionally, the position switch is a micro switch, which has an automatically reset trigger rod. The trigger rod is driven to cooperate with the insulating drive component. When the insulating drive component moves under the action of the second pin, it can trigger the trigger rod to switch the micro switch from an open state to a closed state. When the interaction between the insulating drive component and the second pin is eliminated, the trigger rod automatically resets to switch the micro switch from a closed state to an open state, and the trigger rod drives the insulating drive component to reset.
[0018] Optionally, it also includes a pressure plate, and the insulating drive component is a push rod. The push rod includes a push rod rotating part rotatably disposed on the pressure plate, a push rod mating part disposed opposite to the auxiliary sleeve, and a push rod pushing part for touching the trigger rod. The push rod mating part has a push rod inclined surface extending into the auxiliary sleeve on the side facing the auxiliary sleeve.
[0019] Optionally, the push rod rotating part and the push rod pushing part are located on both sides of the push rod mating part, and the push rod pushing part and the push rod mating part are located between the auxiliary sleeve and the micro switch.
[0020] Optionally, the push rod further includes a push rod inclined portion connected between the push rod mating portion and the push rod pushing portion. The push rod mating portion and the push rod pushing portion are straight structures that are parallel to each other. One end of the push rod inclined portion is bent and connected to the push rod mating portion, and the other end of the push rod inclined portion is bent and connected to the push rod pushing portion.
[0021] Optionally, the first socket assembly includes a first socket for contacting the first pin, the second socket assembly includes a second socket for contacting the second pin, and the auxiliary socket includes an auxiliary socket body for contacting the second pin. The auxiliary socket body and the second socket are arranged sequentially at intervals along the insertion direction of the second pin. The auxiliary socket body is located between the second socket and the second socket, and the distance from the second socket to the second socket is greater than the distance from the first socket to the first socket.
[0022] Optionally, the arc-extinguishing assembly includes a PCE board or a PCB board; the first socket assembly includes a first tongue, which is inserted into the PCE board or the PCB board to achieve electrical connection with the power supply terminal of the arc-extinguishing assembly; the second socket assembly includes a second tongue, which is inserted into the PCE board or the PCB board to achieve electrical connection with the power supply terminal of the arc-extinguishing assembly; the auxiliary socket includes a connecting tongue, which is inserted into the PCE board or the PCB board to achieve electrical connection with the arc-extinguishing assembly.
[0023] The DC arc-extinguishing socket of this utility model, during the plug insertion and removal process, has the auxiliary sleeve contacting the second pin before the second sleeve assembly and disengaging from the second pin after the second sleeve assembly. The arc-extinguishing component is activated by the position switch, thereby extinguishing the arc when the second pin is in contact with the auxiliary sleeve but not with the second sleeve assembly, and when the second pin is not disengaged from the auxiliary sleeve but not from the second sleeve assembly, thus improving the safety and service life of the socket. Attached Figure Description
[0024] Figure 1 This is an exploded view of the DC arc-extinguishing socket of this utility model;
[0025] Figure 2 This is a cross-sectional view of the position of the pin in the DC arc-extinguishing socket position switch of Embodiment 1 of this utility model when it is not triggered;
[0026] Figure 3 This is a cross-sectional view of the position of the pin when the position switch of the DC arc-extinguishing socket in Embodiment 1 of this utility model is triggered;
[0027] Figure 4 This is an exploded view of the socket body and pressure plate of Embodiment 1 of this utility model;
[0028] Figure 5 This is an assembly drawing of the socket body and pressure plate according to Embodiment 1 of this utility model;
[0029] Figure 6 This is a schematic diagram of the structure of the socket body according to Embodiment 1 of this utility model;
[0030] Figure 7 This is a schematic diagram of the socket body and pressure plate according to Embodiment 2 of this utility model;
[0031] Figure 8 This is a schematic diagram of the push rod of this utility model;
[0032] Figure 9 This is a schematic diagram of the structure of the first insert assembly of this utility model;
[0033] Figure 10 This is a structural schematic diagram of the second insert assembly of this utility model.
[0034] Base 100; Mounting cavity 101; Side flange 102; Pressure plate 110; Slide groove 111; First limiting groove 112; Second limiting groove 113; Push rod shaft 114; Positioning post 115; Cover plate 120; Panel 130; First insertion hole 140; Second insertion hole 150; Protective door 160; Return spring 170; Partition plate 180;
[0035] First insert assembly 200; first terminal block 210; first insert 220; first clamping piece 230; first tongue piece 240; first terminal piece 250;
[0036] Second socket assembly 300; second terminal block 310; second socket 320; second clamping piece 330; second tongue piece 340; second terminal piece 350;
[0037] Auxiliary sleeve 400; Auxiliary sleeve body 410; Connecting tongue 420; Guide ear 430;
[0038] Position switch S1; moving contact 500; moving contact contact portion 510; moving contact fixed portion 520; arc-shaped piece 521; L-shaped piece 522; stationary contact 530; stationary contact portion 531; trigger rod 540;
[0039] Arc extinguishing component 600;
[0040] Slider 700; Slider body 710; Slider inclined surface 711; Slider wing 720;
[0041] Push rod 800; push rod rotating part 810; push rod mating part 820; push rod inclined surface 821; push rod pushing part 830; push rod tilting part 840;
[0042] Plug 900; First pin 910; Second pin 920. Detailed Implementation
[0043] The specific embodiments of the DC arc-extinguishing socket of this utility model are further described below with reference to the accompanying drawings. The DC arc-extinguishing socket of this utility model is not limited to the descriptions in the following embodiments.
[0044] like Figure 1 As shown, the DC arc-extinguishing socket of this embodiment is used to connect with the plug 900 and typically includes a base 100, a socket body, a pressure plate 110, a cover plate 120 and a panel 130. For example, the base 100 is provided with a mounting cavity 101 with an opening on one side. The mounting cavity 101 of the base 100 has a side flange 102 extending outward from the cavity opening. The socket body is installed in the mounting cavity 101 of the base 100, and the pressure plate 110 is inserted into the mounting cavity 101 and confines the socket body within the mounting cavity 101. The cover plate 120 closes the cavity opening of the mounting cavity 101. The panel 130 covers the side flange 102 and the cover plate 120 of the base 100. The DC arc-extinguishing socket is also provided with a socket hole corresponding to the pin of the plug 900. The socket hole is used for the pin of the plug 900 to be inserted. The socket hole is arranged to pass through the panel 130, the cover plate 120 and the pressure plate 110 in sequence. The pin of the plug 900 includes a first pin 910 and a second pin 920. The socket hole includes a first socket hole 140 corresponding to the first pin 910 and a second socket hole 150 corresponding to the second pin 920. Depending on the requirements, the 900 plug also includes a ground pin, and the corresponding DC arc-extinguishing socket is also equipped with a ground pin hole.
[0045] The DC arc-extinguishing socket may also be equipped with a protective door 160 and a return spring 170 for resetting the protective door 160. The protective door 160 is slidably disposed on the pressure plate 110 and located between the pressure plate 110 and the cover plate 120. During the process of inserting the plug 900 into the socket, the protective door 160 can interfere with the pin of the plug 900 and move to make way for the socket on the pressure plate 110 so that the pin can be inserted into place. During the process of pulling the plug 900 out of the socket, when the interference between the protective door 160 and the pin is eliminated, the protective door 160 is reset under the action of the return spring 170 to block the socket between the socket of the pressure plate 110 and the socket of the cover plate 120, so as to prevent foreign objects from entering the socket and improve the safety of the socket. The DC arc-extinguishing socket may also be provided with a partition 180, which is located between the pressure plate 110 and the cover plate 120. The first socket 140 and the second socket 150 are respectively provided through the partition 180. The partition 180 plays a role in electrical isolation between the positive and negative poles of the socket, thereby improving the electrical safety of the socket. The protective door 160 is used to cover the portion of the first socket 140 and the second socket 150 of the pressure plate 110, which is placed on the partition 180.
[0046] like Figure 2 , Figure 3 and Figure 4As shown, the socket body of the DC arc-extinguishing socket in this embodiment includes a first socket assembly 200, a second socket assembly 300, an auxiliary socket 400, a position switch S1, and an arc-extinguishing assembly 600. The first socket assembly 200 and the second socket assembly 300 are respectively electrically connected to a DC power supply to form a power supply circuit for powering the plug 900. The first socket assembly 200 is correspondingly disposed with the first socket 140, and the second socket assembly 300 and the auxiliary socket 400 are respectively correspondingly disposed with the second socket 150. That is, the first socket assembly 200 is used alone to contact the first pin 910, and the second socket assembly 300 and the auxiliary socket 400 are used together to contact the second pin 920.
[0047] During the process of inserting the plug 900 into the socket, the second pin 920 of the plug 900 first contacts the auxiliary sleeve 400 and the first pin 910 of the plug 900 contacts the first sleeve assembly 200. Then, the second pin 920 contacts the second sleeve assembly 300. The contact between the first pin 910 and the first sleeve assembly 200 can occur before, during, or after the contact between the second pin 920 and the auxiliary sleeve 400. During the process of removing the plug 900 from the socket, the second pin 920 first disengages from the second sleeve assembly 300. Then, the second pin 920 disengages from the auxiliary sleeve 400 and the first pin 910 disengages from the first sleeve assembly 200. The disengagement between the first pin 910 and the first sleeve assembly 200 can occur before, during, or after the disengagement between the second pin 920 and the auxiliary sleeve 400.
[0048] The position switch S1 is configured to close when or after the second pin 920 contacts the auxiliary socket 400 and before it contacts the second socket assembly 300, and to open when or before the second pin 920 disengages from the auxiliary socket 400 and after it disengages from the second socket assembly 300.
[0049] The arc extinguishing component 600 is configured to stop arc extinguishing in response to the closing of the position switch S1, and to start arc extinguishing in response to the opening of the position switch S1.
[0050] In this embodiment, the closing of the position switch S1 is driven by the second pin 920. During the process of the second pin 920 being inserted into the second socket 150 of the socket, the position switch S1 is driven to close and contact the auxiliary socket 400, and then it contacts the second socket assembly 300.
[0051] In this embodiment of the DC arc-extinguishing socket, during the insertion and removal of the plug 900, the auxiliary sleeve 400 contacts the second pin 920 before the second sleeve assembly 300, and then disengages from the second pin 920 after the second sleeve assembly 300. The arc-extinguishing assembly 600 is activated by the position switch S1 being disconnected. Thus, arc extinguishing is performed when the second pin 920 is in contact with the auxiliary sleeve 400 but not in contact with the second sleeve assembly 300, and when the second pin 920 is not disengaged from the auxiliary sleeve 400 but is disengaged from the second sleeve assembly 300, thereby improving the safety and service life of the socket.
[0052] In this embodiment, the first socket assembly 200 is a positive socket assembly, and the second socket assembly 300 is a negative socket assembly. Of course, in other embodiments, the first socket assembly 200 may be a negative socket assembly, and the second socket assembly 300 may be a positive socket assembly.
[0053] Preferably, the arc-extinguishing component 600 includes a PCE board or a PCB board, and the PCE board or PCB board is provided with a DC arc-extinguishing circuit. The DC arc-extinguishing circuit can be an existing DC arc-extinguishing circuit, used to extinguish the arc during the insertion and removal of the plug 900. For example, the arc-extinguishing component 600 is electrically connected to the first socket component 200 and the second socket component 300 to obtain power. The arc-extinguishing component 600 is also electrically connected to the auxiliary socket 400. The DC arc-extinguishing circuit releases the electrical energy at the auxiliary socket 400, thereby eliminating the potential difference between the positive and negative electrodes, and thus achieving the arc-extinguishing effect. The arc-extinguishing principle of the arc-extinguishing component 600 is existing technology and will not be described in detail here.
[0054] like Figure 6 and Figure 9As shown, the first socket assembly 200 includes a first terminal block 210, a first socket 220, a first tongue 240 and a first connector 250 electrically connected to the first socket 220. The first socket 220 is used to contact the first pin 910. The first connector 250 is inserted into the first terminal block 210 and cooperates with the first terminal block 210 for electrical connection to a DC power supply. The first tongue 240 is inserted into a PCE board or PCB board to achieve electrical connection to the power supply terminal of the arc extinguishing assembly 600. Exemplarily, the first socket 220 in this embodiment has a U-shaped sheet structure. Each of the two sides of the first socket 220 extends away from the bottom edge of the first socket 220 and is provided with a first clamping piece 230. The middle of the two first clamping pieces 230 is raised in a direction close to each other. The first tongue 240 is formed by the side of the first socket 220 away from the second socket assembly 300, and the first connector 250 is formed by the bottom edge of the first socket 220. In this embodiment, the first socket 220, the first tongue 240, and the first connector 250 are integrally formed. In other embodiments, the first socket 220, the first tongue 240, and the first connector 250 can also be separately formed. Of course, the first socket assembly 200 can also employ other existing socket assembly structures.
[0055] like Figure 4 and Figure 10 As shown, the second socket assembly 300 includes a second terminal block 310, a second socket 320, a second tongue 340 and a second connector 350 electrically connected to the second socket 320. The second socket 320 is used to contact the second pin 920. The second connector 350 is inserted into the second terminal block 310 and cooperates with the second terminal block 310 for electrical connection to a DC power supply. The second tongue 340 is inserted into a PCE board or PCB board to achieve electrical connection to the power supply terminal of the arc extinguishing assembly 600. Exemplarily, the second socket 320 in this embodiment has a U-shaped sheet structure. Each of the two sides of the second socket 320 extends away from the bottom edge of the second socket 320 and is provided with a second clamping piece 330. The middle of the two second clamping pieces 330 is raised in a direction close to each other. The bottom edge of the second socket 320, away from the first socket assembly 200, extends to form the second tongue 340 and the second connector 350, respectively. In this embodiment, the second socket 320, the second tongue 340, and the second connector 350 are integrally formed. In other embodiments, the second socket 320, the second tongue 340, and the second connector 350 can also be separately formed. Of course, the second socket assembly 300 can also employ other existing socket assembly structures.
[0056] like Figure 4 As shown, the socket body also includes a ground electrode socket assembly, which includes a ground electrode terminal and a ground electrode socket 320.
[0057] like Figure 6 As shown, the auxiliary socket 400 in this embodiment includes an auxiliary socket body 410 and a connecting tongue 420 that are electrically connected. The auxiliary socket body 410 is used to contact the second pin 920. The auxiliary socket body 410 and the second socket 320 are arranged sequentially at intervals along the insertion direction of the second pin 920. The connecting tongue 420 is inserted into the PCE board or PCB board to achieve electrical connection with the arc extinguishing component 600. The auxiliary socket body 410 is located above the second socket 320 and between the second socket 320 and the second socket 150. The distance from the second socket 320 to the second socket 150 is greater than the distance from the first socket 220 to the first socket 140. For example, in this embodiment, the auxiliary socket body 410 resembles a U-shaped sheet structure, with its two sides inclined towards each other. The bottom edge of the auxiliary socket body 410 extends towards the insertion direction of the plug 900 to form the connecting tongue 420. Each of the two sides of the auxiliary socket body 410 extends towards the withdrawal direction of the plug 900 and is provided with a guide ear 430, which is bent away from each other. In this embodiment, the auxiliary socket body 410 and the connecting tongue 420 are integrally formed. In other embodiments, the auxiliary socket body 410 and the connecting tongue 420 can also be separately formed. Of course, the auxiliary socket body 410 can also adopt other existing socket structures.
[0058] like Figure 5 and Figure 6 The DC arc-extinguishing socket shown in Embodiment 1 or as follows Figure 7 The second embodiment of the DC arc extinguishing socket shown in this embodiment further includes an insulating drive (slider 700 or push rod 800). Before the second pin 920 contacts the second socket assembly 300, or when or after the second pin 920 is inserted into the auxiliary socket 400, the insulating drive is pushed to switch the position switch S1 from the open state to the closed state.
[0059] Specifically, the insulating drive component is provided with a driving ramp that extends into the auxiliary sleeve 400. When or after the second pin 920 is inserted into the auxiliary sleeve 400, the driving ramp pushes the insulating drive component out of the auxiliary sleeve 400, causing the insulating drive component to switch the position switch S1 from the open state to the closed state. The position switch S1 is used to monitor whether the second pin 920 is in contact with the auxiliary sleeve 400, thereby controlling whether the arc-extinguishing assembly 600 extinguishes the arc.
[0060] like Figures 4-6In the first embodiment of the DC arc-extinguishing socket shown, the position switch S1 includes a cooperating moving contact 500 and a stationary contact 530. The moving contact 500 is driven to cooperate with an insulating drive component. When the insulating drive component moves under the action of the second pin 920, it can drive the moving contact 500 to deform and contact the stationary contact 530, that is, the position switch S1 switches from the open state to the closed state. When the interaction between the insulating drive component and the second pin 920 is eliminated, that is, when the second pin 920 is pulled out from the auxiliary socket 400, the moving contact 500 returns to its original state and separates from the stationary contact 530, that is, the position switch S1 switches from the closed state to the open state, and the moving contact 500 drives the insulating drive component to reset. By automatically resetting the insulating drive component when the moving contact 500 resets, there is no need to set up a separate reset elastic component, thereby reducing the number of parts and simplifying the structure.
[0061] In this embodiment, the insulating drive component is a slider 700 slidably mounted on the pressure plate 110. The moving contact 500 includes a moving contact contact portion 510 and a moving contact fixing portion 520 fixed on the pressure plate 110. The stationary contact 530 is fixed on the pressure plate 110. The auxiliary sleeve 400, slider 700, moving contact contact portion 510 of the moving contact 500, and stationary contact 530 are arranged sequentially along the sliding direction of the slider 700. Preferably, the sliding direction of the slider 700 is perpendicular to the insertion / removal direction of the second pin 920. The slidably mounted slider 700 serves as a transmission component between the second pin 920 and the moving contact 500, has a simple structure, and enables reliable contact between the moving contact 500 and the stationary contact 530.
[0062] Preferably, the slider 700 includes a slider body 710. The slider body 710 has a slider inclined surface 711 extending into the auxiliary sleeve 400 on the side facing the auxiliary sleeve 400. In this embodiment, the driving inclined surface is the slider inclined surface 711. Slider wings 720 protrude from both sides of the slider body 710 along the sliding direction of the slider 700. The direction in which the slider wings 720 protrude is perpendicular to the sliding direction of the slider 700 and also perpendicular to the insertion / removal direction of the second pin 920. A groove 111 protrudes from the pressure plate 110 to cooperate with the slider 700. The groove 111 has a stop sidewall corresponding to the slider wing 720, located on the path of the slider wing 720 moving towards the reset direction of the slider 700. The slider 700 has a simple structure; the slider wing 720 and the stop sidewall cooperate to position the slider 700 at its initial position.
[0063] In this embodiment, the movable contact portion 510 is a straight structure perpendicular to the sliding direction of the slider 700. The movable contact fixing portion 520 includes an arc-shaped piece 521 and an L-shaped piece 522. One end of the movable contact portion 510 is disposed opposite to the stationary contact portion 530, and the middle part of the movable contact portion 510 is disposed opposite to the slider 700. The arc-shaped piece 521 is connected between the other end of the movable contact portion 510 and one end of the L-shaped piece 522. The pressure plate 110 has a protruding first limiting groove 112 that cooperates with the L-shaped piece 522. The first limiting groove 112 is L-shaped, and the other end of the L-shaped piece 522 extends out of the first limiting groove 112 for electrical connection with the arc extinguishing component 600. The moving contact piece 500 has a simple structure and is easy to manufacture. The moving contact piece fixing part 520 adopts a bending structure composed of an arc-shaped piece 521 and an L-shaped piece 522, which can be stably and reliably limited and installed on the pressure plate 110. The connection between the moving contact piece contact part 510 and the moving contact piece fixing part 520 is set close to the slider 700 and far away from the stationary contact piece 530, so that the part of the moving contact piece contact part 510 with a large swing amplitude is used to contact the stationary contact piece 530, and the slider 700 can drive the moving contact piece 500 to contact the stationary contact piece 530 more quickly.
[0064] In this embodiment, the length direction of the stationary contact piece 530 is perpendicular to the sliding direction of the slider 700. A stationary contact piece contact portion 531 protrudes from the middle of the stationary contact piece 530 towards the moving contact piece contact portion 510. A second limiting groove 113, which mates with the stationary contact piece 530, protrudes from the pressure plate 110. The end of the stationary contact piece contact portion 531 extends out of the second limiting groove 113 and is positioned opposite to the moving contact piece contact portion 510. One end of the stationary contact piece 530, away from the moving contact piece fixing portion 520, extends out of the second limiting groove 113 for electrical connection with the arc extinguishing assembly 600. The stationary contact piece 530 has a simple structure, is easy to manufacture, and facilitates reliable contact with the moving contact piece 500.
[0065] like Figure 7 and Figure 8In the second embodiment of the DC arc-extinguishing socket shown, the position switch S1 is a micro switch mounted on the pressure plate 110. The micro switch has an automatically resetting trigger rod 540. The pressure plate 110 has a positioning post 115, and the micro switch is fitted onto the positioning post 115 through a positioning hole. The trigger rod 540 engages with an insulating drive component. When the insulating drive component moves under the action of the second pin 920, it triggers the trigger rod 540, switching the micro switch from an open state to a closed state. When the interaction between the insulating drive component and the second pin 920 is eliminated, i.e., when the second pin 920 is pulled out of the auxiliary sleeve 400, the trigger rod 540 automatically resets, switching the micro switch from a closed state to an open state, and the trigger rod 540 also drives the insulating drive component to reset. By automatically resetting the trigger rod 540, the insulating drive component is reset, eliminating the need for a separate reset elastic component, thus reducing the number of parts and simplifying the structure.
[0066] In this embodiment, the insulating drive component is a push rod 800. The push rod 800 includes a push rod rotating part 810 rotatably mounted on the pressure plate 110, a push rod mating part 820 opposite to the auxiliary sleeve 400, and a push rod pushing part 830 for actuating the trigger rod 540. The push rod mating part 820 has a push rod inclined surface 821 extending into the auxiliary sleeve 400 on the side facing the auxiliary sleeve 400. In this embodiment, the driving inclined surface is the push rod inclined surface 821. The rotatably mounted push rod 800 serves as a transmission component between the second pin 920 and the trigger rod 540, and can quickly actuate the micro switch to switch to the closed state.
[0067] In a preferred embodiment, the push rod 800 is configured to rotate in a ring shape, with a push rod rotating shaft 114 protruding from the pressure plate 110. The push rod rotating part 810 is rotatably mounted on the push rod rotating shaft 114 through a central hole. Preferably, the axial direction of the push rod rotating shaft 114 is parallel to the insertion / removal direction of the second pin 920. Alternatively, the pressure plate 110 and the push rod rotating shaft 114 can be separate components, with the push rod rotating shaft 114 being a single circular shaft, and the pressure plate 110 having a circular shaft hole for rotatable engagement with the shaft.
[0068] In a preferred embodiment of the push rod 800 structure, the push rod rotating part 810 and the push rod pushing part 830 are located on opposite sides of the push rod mating part 820, that is, the push rod pushing part 830 and the push rod mating part 820 are located on the same side of the push rod rotating part 810. The push rod pushing part 830 and the push rod mating part 820 are located between the auxiliary sleeve 400 and the micro switch, allowing for a more compact arrangement of the push rod 800, the auxiliary sleeve 400, and the micro switch. Alternatively, the push rod pushing part 830 and the push rod mating part 820 can also be located on opposite sides of the push rod rotating part 810.
[0069] Specifically, the push rod 800 also includes a push rod inclined portion 840 connected between the push rod mating portion 820 and the push rod pushing portion 830. The push rod mating portion 820 and the push rod pushing portion 830 are straight structures that are parallel to each other. One end of the push rod inclined portion 840 is bent and connected to the push rod mating portion 820, and the other end of the push rod inclined portion 840 is bent and connected to the push rod pushing portion 830.
[0070] In the DC arc-extinguishing socket of Embodiment 1, the position switch S1 is composed of a moving contact 500 and a stationary contact 530, and the insulating driving component for driving the position switch S1 to the closed state is a slider 700. In the DC arc-extinguishing socket of Embodiment 2, the position switch S1 is a micro switch, and the insulating driving component for driving the position switch S1 to the closed state is a push rod 800. Of course, as other embodiments, the position switch S1 may also be composed of a moving contact 500 and a stationary contact 530, and the insulating driving component for driving the position switch S1 to the closed state may be a push rod 800; or the position switch S1 may be a micro switch, and the insulating driving component for driving the position switch S1 to the closed state may be a slider 700.
[0071] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.
[0072] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.
Claims
1. A DC arc-extinguishing socket, comprising a socket for inserting a plug (900), characterized in that: The socket includes a first socket assembly (200), a second socket assembly (300), an auxiliary socket (400), a position switch (S1), and an arc-extinguishing assembly (600). The socket includes a first socket (140) corresponding to the first socket assembly (200) and a second socket (150) corresponding to the second socket assembly (300). The first socket assembly (200) is correspondingly disposed to the first socket (140), and the second socket assembly (300) and the auxiliary socket (400) are respectively correspondingly disposed to the second socket (150). During the process of inserting the plug (900) into the socket, the second pin (920) of the plug (900) first contacts the auxiliary sleeve (400) and the first pin (910) of the plug (900) contacts the first sleeve assembly (200), and then the second pin (920) contacts the second sleeve assembly (300); during the process of pulling the plug (900) out of the socket, the second pin (920) first disengages from the second sleeve assembly (300), and then the second pin (920) disengages from the auxiliary sleeve (400) and the first pin (910) disengages from the first sleeve assembly (200); The position switch (S1) is configured to close when or after the second pin (920) contacts the auxiliary socket (400) and before it contacts the second socket assembly (300), and to open when or before the second pin (920) disengages from the auxiliary socket (400) and after it disengages from the second socket assembly (300); The arc extinguishing component (600) is configured to stop arc extinguishing in response to the closing of the position switch (S1) and to start arc extinguishing in response to the opening of the position switch (S1).
2. The DC arc-extinguishing socket according to claim 1, characterized in that: It also includes an insulating drive that, before the second pin (920) contacts the second socket assembly (300), when or after the second pin (920) is inserted into the auxiliary socket (400), pushes the insulating drive to drive the position switch (S1) from the open state to the closed state.
3. The DC arc-extinguishing socket according to claim 2, characterized in that: The insulating drive member is provided with a drive ramp that extends into the auxiliary sleeve (400). When or after the second pin (920) is inserted into the auxiliary sleeve (400), the insulating drive member is pushed out of the auxiliary sleeve (400) by the drive ramp, so that the insulating drive member drives the position switch (S1) to switch from the open state to the closed state.
4. The DC arc-extinguishing socket according to claim 3, characterized in that: The position switch (S1) includes a moving contact (500) and a stationary contact (530) that cooperate with each other. The moving contact (500) is driven to cooperate with the insulating drive member. When the insulating drive member moves under the action of the second pin (920), it can drive the moving contact (500) to deform and contact the stationary contact (530). When the interaction between the insulating drive member and the second pin (920) is eliminated, the moving contact (500) returns to its original state and separates from the stationary contact (530), and the moving contact (500) drives the insulating drive member to reset.
5. The DC arc-extinguishing socket according to claim 4, characterized in that: It also includes a pressure plate (110), the insulating drive component is a slider (700) slidably disposed on the pressure plate (110), the movable contact piece (500) includes a movable contact piece contact portion (510) and a movable contact piece fixing portion (520) fixed on the pressure plate (110), the stationary contact piece (530) is fixed on the pressure plate (110), and the auxiliary sleeve (400), the slider (700), the movable contact piece contact portion (510) of the movable contact piece (500) and the stationary contact piece (530) are arranged sequentially along the sliding direction of the slider (700).
6. The DC arc-extinguishing socket according to claim 5, characterized in that: The slider (700) includes a slider body (710). The slider body (710) has a slider inclined surface (711) extending into the auxiliary sleeve (400) on the side facing the auxiliary sleeve (400). The slider body (710) has slider wings (720) protruding on both sides along the sliding direction of the slider (700). The pressure plate (110) has a groove (111) that cooperates with the slider (700). The groove (111) has a stop sidewall corresponding to the slider wing (720). The stop sidewall is located on the path of the slider wing (720) moving towards the reset direction of the slider (700).
7. The DC arc-extinguishing socket according to claim 5, characterized in that: The movable contact part (510) is a straight structure perpendicular to the sliding direction of the slider (700). The movable contact fixed part (520) includes an arc-shaped piece (521) and an L-shaped piece (522). One end of the movable contact part (510) is disposed opposite to the stationary contact piece (530), and the middle part of the movable contact part (510) is disposed opposite to the slider (700). The arc-shaped piece (521) is connected between the other end of the movable contact part (510) and one end of the L-shaped piece (522). The pressure plate (110) has a first limiting groove (112) that cooperates with the L-shaped piece (522). The other end of the L-shaped piece (522) extends out of the first limiting groove (112) for electrical connection to the arc extinguishing assembly (600).
8. The DC arc-extinguishing socket according to claim 5, characterized in that: The length direction of the stationary contact piece (530) is perpendicular to the sliding direction of the slider (700). The middle part of the stationary contact piece (530) is raised towards the moving contact piece contact part (510) and a stationary contact piece contact part (531) is provided. The pressure plate (110) is raised and provided with a second limiting groove (113) that cooperates with the stationary contact piece (530). The end of the stationary contact piece contact part (531) extends out of the second limiting groove (113) and is disposed opposite to the moving contact piece contact part (510). The end of the stationary contact piece (530) away from the moving contact piece fixing part (520) extends out of the second limiting groove (113) for electrical connection to the arc extinguishing assembly (600).
9. The DC arc-extinguishing socket according to claim 3, characterized in that: The position switch (S1) is a micro switch, which has a trigger rod (540) that can automatically reset. The trigger rod (540) is driven to cooperate with the insulating drive member. When the insulating drive member moves under the action of the second pin (920), it can trigger the trigger rod (540) to switch the micro switch from the open state to the closed state. When the interaction between the insulating drive member and the second pin (920) is eliminated, the trigger rod (540) automatically resets to switch the micro switch from the closed state to the open state, and the trigger rod (540) drives the insulating drive member to reset.
10. The DC arc-extinguishing socket according to claim 9, characterized in that: It also includes a pressure plate (110), and the insulating drive component is a push rod (800). The push rod (800) includes a push rod rotating part (810) rotatably disposed on the pressure plate (110), a push rod mating part (820) disposed opposite to the auxiliary sleeve (400), and a push rod pushing part (830) for actuating the trigger rod (540). The push rod mating part (820) has a push rod inclined surface (821) extending into the auxiliary sleeve (400) on the side facing the auxiliary sleeve (400).
11. The DC arc-extinguishing socket according to claim 10, characterized in that: The push rod rotating part (810) and the push rod pushing part (830) are located on both sides of the push rod mating part (820), and the push rod pushing part (830) and the push rod mating part (820) are located between the auxiliary sleeve (400) and the micro switch.
12. The DC arc-extinguishing socket according to claim 11, characterized in that: The push rod (800) further includes a push rod inclined portion (840) connected between the push rod mating portion (820) and the push rod pushing portion (830). The push rod mating portion (820) and the push rod pushing portion (830) are straight structures that are parallel to each other. One end of the push rod inclined portion (840) is bent and connected to the push rod mating portion (820), and the other end of the push rod inclined portion (840) is bent and connected to the push rod pushing portion (830).
13. The DC arc-extinguishing socket according to claim 1, characterized in that: The first socket assembly (200) includes a first socket (220) for contacting the first pin (910), the second socket assembly (300) includes a second socket (320) for contacting the second pin (920), and the auxiliary socket (400) includes an auxiliary socket body (410) for contacting the second pin (920). The auxiliary socket body (410) and the second socket (320) are arranged alternately along the insertion direction of the second pin (920). The auxiliary socket body (410) is located between the second socket (320) and the second socket (150). The distance from the second socket (320) to the second socket (150) is greater than the distance from the first socket (220) to the first socket (140).
14. The DC arc-extinguishing socket according to claim 1, characterized in that: The arc extinguishing assembly (600) includes a PCE board or a PCB board; the first socket assembly (200) includes a first tongue (240), which is plugged into the PCE board or the PCB board to achieve electrical connection with the power supply terminal of the arc extinguishing assembly (600); the second socket assembly (300) includes a second tongue (340), which is plugged into the PCE board or the PCB board to achieve electrical connection with the power supply terminal of the arc extinguishing assembly (600); the auxiliary socket (400) includes a connecting tongue (420), which is plugged into the PCE board or the PCB board to achieve electrical connection with the arc extinguishing assembly (600).