WO2018196547A1 - 继电器 - Google Patents

继电器 Download PDF

Info

Publication number
WO2018196547A1
WO2018196547A1 PCT/CN2018/081077 CN2018081077W WO2018196547A1 WO 2018196547 A1 WO2018196547 A1 WO 2018196547A1 CN 2018081077 W CN2018081077 W CN 2018081077W WO 2018196547 A1 WO2018196547 A1 WO 2018196547A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
disposed
closed cavity
contact plate
frame body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/081077
Other languages
English (en)
French (fr)
Inventor
陆涛
姚保同
冯俊
汪鲁建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BYD Co Ltd
Original Assignee
BYD Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Publication of WO2018196547A1 publication Critical patent/WO2018196547A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/12—Ventilating; Cooling; Heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts

Definitions

  • the present invention relates to the field of electrical control devices, and more particularly to a relay.
  • a relay is an electrical control device that is usually used in an automatic control circuit. It is an "automatic switch” that uses a small current to control large current operation. It functions as an automatic adjustment, safety protection, and conversion circuit in the circuit.
  • Existing relays typically include a frame body, a lead end portion, a moving spring portion, a magnetic circuit system, and a push mechanism.
  • the lead end portion includes a lead end and a static contact fixed to the bottom of the lead end.
  • the moving spring portion is disposed in the frame body and has a movable contact thereon.
  • the magnetic circuit system is used to control the pushing mechanism to push the moving spring portion to work, so that the moving contact on the moving spring portion is in contact with or separated from the static contact of the leading end portion to complete the conduction or disconnection control of the relay.
  • the outer casing of the frame body is usually made of an insulating material such as plastic.
  • the relay When the relay is applied to a relatively high load, such as in a circuit where the breaking voltage exceeds 10V or the current exceeds 100mA, a temperature is generated in the gap between the stationary contact and the moving contact (hereinafter referred to as the gap).
  • the arc is a form of gas discharge. If the arc is applied to the frame body made of plastic, the plastic is easily carbonized, resulting in a sharp drop in the insulation of the frame body, which may cause the relay to burn out in severe cases.
  • the existing relay uses the magnetic steel on the outer circumference of the gap to arc the arc generated at the gap to achieve the purpose of reducing the arc.
  • the arc-striking mechanism completely relies on the electromagnetic force of the magnetic field to the current in the arc to lengthen the arc, thereby increasing the arc voltage to achieve the purpose of extinguishing the arc, and the arc-extinguishing effect is limited by the electromagnetic force of the current in the arc, and the arc-extinguishing effect is not
  • the arc-cutting effect may be reduced due to the blockage of the geometric structure in the frame body during the arcing process.
  • the invention provides a relay to solve the problem that the existing arc extinguishing effect of the relay is not good.
  • a relay comprising a first frame body, a second frame body, a lead end assembly, a pushing assembly and a driving mechanism;
  • the first frame body is provided with a first sealing a cavity;
  • a second closed cavity is disposed in the second frame body;
  • the terminal assembly is fixed on the first frame body, and includes one end extending into the first closed cavity and the other end extending Two static contacts of the first closed cavity;
  • the urging assembly includes a hollow push rod, a movable contact plate and a moving iron core; the movable contact plate is fixed at one end of the hollow push rod, located in the first closed cavity, the movable touch plate and the movable contact plate a gap is formed between the stationary contacts; the movable iron core is fixedly disposed at the other end of the hollow push rod and located in the second closed cavity; and the hollow push rod is provided with a connection for connecting the first a closed cavity and a venting duct of the second closed cavity and a nozzle communicating with the venting duct; the movable contact plate is located on a hollow push rod between the nozzle and the moving iron core;
  • the driving mechanism is configured to drive the pushing component to reciprocate between the first position and the second position; when the pushing component is in the first position, the moving contact plate is in contact with the static contact; When the pushing component is in the second position, the moving contact plate is electrically disconnected from the static contact;
  • the hollow push rod is provided with two oppositely disposed nozzles, and an angle formed between each of the nozzles and the air duct is a right angle or an acute angle, and the nozzle is directed to the static contact extend.
  • the drive mechanism includes a reset assembly for driving the pusher assembly to move from the first position to the second position; the reset assembly is disposed within the second closed cavity and located at the move Between the iron core and the moving contact plate.
  • the resetting assembly includes an elastic member and a fixing member; the fixing member is disposed at an outer periphery of the hollow push rod, and forms an annular cavity with the hollow push rod; the elastic member is disposed at the Inside the annular cavity.
  • the drive mechanism includes a magnetic circuit assembly for driving the pusher assembly to move from the second position to the first position, the magnetic circuit assembly being disposed on the second frame body and located at the The second closed cavity is peripheral.
  • the magnetic circuit assembly includes a coil disposed at a periphery of the second closed cavity.
  • the second frame body includes a magnetic conductive frame and an insulating housing disposed at a periphery of the magnetic conductive frame; the coil is disposed within the magnetic conductive frame.
  • the relay further comprises two arc extinguishing assemblies disposed at a periphery of the first frame body; each arc extinguishing assembly is disposed opposite to the static contact for eliminating an arc formed in the gap.
  • the arc extinguishing assembly includes a first arc extinguishing magnet and a second arc extinguishing magnet disposed opposite to each other in a periphery of the first frame body, the first arc extinguishing magnet and the second arc extinguishing magnet being directly opposite The gap is set.
  • the terminal assembly further includes a positive terminal and a negative terminal, and the positive terminal and the negative terminal are respectively connected to a stationary contact.
  • the movable contact plate is further provided with a movable contact that matches the static contact.
  • the present invention has the following advantages: in the relay provided by the present invention, the first closed cavity and the second closed cavity are communicated through the ventilation duct and the nozzle in the hollow push rod, and are fixed on the hollow push rod.
  • the upper movable contact plate and the movable iron core are respectively located in the first closed cavity and the second closed cavity; when the driving mechanism drives the pushing assembly to move from the first position to the second position, the air pressure of the second closed cavity increases
  • the gas flows from the second closed cavity to the first closed cavity, and is blown to the gap between the static contact and the movable contact plate through the nozzle to achieve the effect of eliminating the arc; moreover, it is beneficial to increase the first closed cavity and the first
  • the fluidity of the gas in the second closed cavity reduces the temperature of the gas and reduces the probability of the first closed cavity bursting due to excessive temperature.
  • the resistance of the hollow push rod is reduced compared to the resistance of the solid push rod, which makes the relay turn on or off faster.
  • the relay is more sensitive.
  • Figure 1 is a cross-sectional view showing a relay in an embodiment of the present invention.
  • Figure 2 is an exploded view of portion A of Figure 1.
  • Figure 3 is a top plan view of a relay in accordance with an embodiment of the present invention.
  • FIG 4 is another top plan view of the relay in accordance with an embodiment of the present invention.
  • Fig. 1 shows a relay in this embodiment.
  • the relay includes a first frame body 10, a second frame body 20, a lead end assembly 30, a push assembly 40, and a drive mechanism.
  • the first frame body 10 is provided with a first closed cavity 11 to prevent the first frame body 10 from circulating with the outside air.
  • the first frame body 10 can be arranged in a cube, which has a simple structure and is convenient to manufacture.
  • the first sealed cavity 11 is filled with a gas having stable performance such as helium gas, hydrogen gas or nitrogen gas, and flows through the gas in the first closed cavity 11 to achieve cooling between the stationary contact 31 and the movable contact plate 42. The purpose of the arc within the gap 80.
  • the drop end assembly 30 is secured to the first frame body 10 and is coupled to a controlled circuit, which is typically a high voltage circuit.
  • the terminal assembly 30 includes two static contacts 31. One end of the two static contacts 31 is inserted into the first closed cavity 11, the other end extends out of the first closed cavity 11, and the stationary contact 31 extends. One end of a closed cavity 11 is connected to a controlled circuit.
  • a second closed cavity 21 is provided in the second frame body 20 to prevent the second closed cavity 21 from circulating with the outside air. Further, the second closed cavity 21 is filled with a gas having stable performance such as helium gas, hydrogen gas or nitrogen gas, and the second closed cavity 21 communicates with the first closed cavity 11 through the hollow push rod 41 of the push assembly 40 to realize the gas.
  • the purpose of circulation is to achieve the purpose of cooling the arc formed by the stationary contact 31 and the movable contact plate 42.
  • the pusher assembly 40 is disposed between the first frame body 10 and the second frame body 20.
  • the pusher assembly 40 includes a hollow push rod 41, a movable contact plate 42, and a movable iron core 43.
  • the movable contact plate 42 is fixedly disposed at one end of the hollow push rod 41, and is located in the first closed cavity 11 , and a gap 80 is formed between the movable contact plate 42 and the two static contacts 31 .
  • the movable contact plate 42 may further be provided with a movable contact (not shown) matching the two static contacts 31. When the static contact 31 is in contact with the movable contact, the controlled circuit is turned on. .
  • the movable iron core 43 is fixedly disposed at the other end of the hollow push rod 41 and is located inside the second closed cavity 21.
  • the hollow push rod 41 is provided with a ventilation duct 411 for communicating the first closed cavity 11 and the second closed cavity 21, and a nozzle 412 communicating with the ventilation duct 411.
  • the movable contact plate 42 is located on the hollow push rod 41 between the nozzle 412 and the movable iron core 43.
  • the driving mechanism is configured to drive the pushing assembly 40 to reciprocate between the first position and the second position; when the pushing assembly 40 is in the first position, the movable contact plate 42 is in contact with the stationary contact 31; the pushing assembly 40 is located in the second position. At this time, the movable contact plate 42 is electrically disconnected from the stationary contact 31.
  • the drive mechanism includes a reset assembly 70 for driving the push assembly 40 to move from the first position to the second position, and a magnetic for driving the push assembly 40 to move from the second position to the first position.
  • Road assembly 50 Specifically, when the magnetic circuit assembly 50 drives the push assembly 40 to move from the second position to the first position, the movable contact plate 42 on the push assembly 40 moves axially toward the stationary contact 31, causing the movable contact plate 42 to move. The contact with the stationary contact 31 is turned on, thereby turning on the controlled circuit.
  • the moving contact plate 42 on the pushing assembly 40 moves axially away from the stationary contact 31, which causes the movable contact plate 42 to be static.
  • the contacts 31 are separated to disconnect the controlled circuit from electrical connections.
  • the movable contact plate 42 and the static contact point are An arc may be formed in the gap 80 between the 31; and during the movement of the pushing assembly 40 from the first position to the second position, the air pressure in the second closed cavity 21 is increased to allow gas to flow from the second closed cavity 21
  • the first closed cavity 11 is blown to the gap 80 through the nozzle 412 to achieve the effect of eliminating the arc; moreover, it is advantageous to increase the fluidity of the gas in the first closed cavity 11 and the second closed cavity 21 to reduce the gas temperature. , reducing the probability that the first closed cavity 11 bursts due to excessive temperature.
  • the first frame body 10 is disposed above the second frame body 20, and the static contact 31 is disposed above the movable contact plate 42.
  • the magnetic circuit assembly 50 is used to drive the movable contact plate 42 in the axial direction. Moving toward the stationary contact 31 (ie, moving from the second position to the first position) is upward; accordingly, the reset assembly 70 is configured to drive the movable contact plate 42 to move axially away from the stationary contact 31 (ie, Moving from the first position to the second displacement) is a downward movement.
  • the terminal assembly 30 further includes a positive terminal 32 and a negative terminal 33 respectively connected to the positive and negative ends of the controlled circuit, and the positive terminal 32 and the negative terminal 33 respectively extend out of the first contact with the stationary contact 31.
  • One end of the cavity 11 is connected.
  • the movable contact plate 42 can be in conduction or separate disconnection electrical connection with the static contact 31.
  • the movable iron core 43 is fixedly disposed at the other end of the hollow push rod 41, and can move the hollow push rod 41 and the movable contact plate 42 thereon in the axial direction toward the stationary contact 31 under the action of the magnetic circuit assembly 50 (ie, Moving from the second position to the first position); and under the action of the resetting assembly 70, the hollow push rod 41 and the movable contact plate 42 thereon are moved axially away from the stationary contact 31 (ie, from the first position) The second position moves).
  • the static contact 31 and the movable contact plate 42 are both disposed in the first closed cavity 11.
  • the static contact 31 and the movable contact plate 42 may be The arc is formed such that the first frame body 10 forming the first closed cavity 11 is not only required to be made of an insulating material but is made of an arc resistant material to prevent the arc from causing damage to the first frame body 10.
  • the arc resistant material is a high temperature resistant insulating material, which can be a PET/GF flame retardant arc resistant composite material, a composite PTFE arc resistant material, a heat resistant arc resistant silicone plastic or a ceramic sheet, wherein the ceramic cost
  • the first frame body 10 is made of ceramic in the embodiment with low performance and stable performance.
  • the first frame body 10 made of an arc-resistant material has a cooling effect on the arc, which can improve the reliability and service life of the relay.
  • the movable contact plate 42 has a plate shape, and the movable contact plate 42 disposed in a plate shape is provided with two movable contacts matched by the static contacts 31; and the movable contact plate 42 is sleeved and fixed in the hollow push.
  • the rod 41 is movable in the axial direction toward or away from the stationary contact 31 with the hollow push rod 41 (i.e., reciprocating between the first position and the second position).
  • the movable contact plate 42 is made of a conductive material, so that when the two movable contacts on the movable contact plate 42 are in contact with the two static contacts 31, the controlled connection with the positive terminal 32 and the negative terminal 33 is controlled.
  • the circuit is turned on to enable on-off control of the controlled circuit.
  • the controlled circuit connected to the two stationary contacts 31 is turned on, since the controlled circuit is usually a high voltage circuit, at the static contact
  • the gap 80 between the stationary contact 31 and the movable contact plate 42 is referred to as an arc gap.
  • the movable iron core 43 cooperates with the magnetic circuit assembly 50 to drive the hollow push rod 41 to move in the axial direction toward the stationary contact 31, that is, the magnetic circuit assembly 50 drives the movable iron core 43 to face the static contact in the axial direction.
  • the entire pushing assembly 40 is moved from the second position to the first position to bring the movable contact plate 42 into contact with the stationary contact 31.
  • the movable iron core 43 cooperates with the resetting assembly 70 to drive the hollow push rod 41 to move axially away from the stationary contact 31, that is, the resetting assembly 70 drives the moving iron core 43 to move axially away from the stationary contact 31.
  • the entire pusher assembly 40 is moved from the first position to the second position to disconnect the movable contact plate 42 from the stationary contact 31.
  • the movable iron core 43 is arranged in a tubular shape, and is sleeved and fixed on the hollow push rod 41.
  • the electromagnetic field formed in the coil 51 of the magnetic circuit assembly 50 is equivalent to a straight conductor, the hollow push can be driven by the electromagnetic field.
  • the rod 41 moves in the axial direction toward the stationary contact 31.
  • the moving iron core 43 is in contact with the resetting assembly 70 during the axial movement toward the stationary contact 31, and when the magnetic circuit assembly 50 is not in operation, the resetting assembly 70 drives the movable iron core 43 to move away from the axial direction.
  • the stationary contact 31 moves in the direction.
  • the outer diameter of the movable iron core 43 matches the inner diameter of the second closed cavity 21 to move the movable iron core 43 in the axial direction toward or away from the stationary contact 31, and the second closed cavity
  • the air pressure of the gas in the cavity below the movable iron core 43 in 21 is changed to circulate the gas in the first closed cavity 11 and the second closed cavity 21 to achieve the purpose of eliminating the arc.
  • the first frame body 10 is disposed above the second frame body 20 as an example, and the movable contact plate 42 is located below the nozzle 412.
  • the resetting assembly 70 drives the movable iron core 43 to move away from the stationary contact 31 in the axial direction, wherein the ventilation duct 411 is disposed in the hollow push rod 41, and one end of the air duct 411 is sleeved on the hollow push rod 41.
  • the upper moving iron cores 43 are all located in the second closed cavity 21, and the other end is in communication with the second closed cavity 21 through the nozzles 412.
  • the magnetic circuit assembly 50 drives the movable iron core 43 to move in the axial direction toward the stationary contact 31, the air pressure in the cavity below the movable iron core 43 in the second closed cavity 21 is lowered, and the gas is removed from the first sealed air.
  • the cavity 11 flows to the second closed cavity 21 to achieve gas circulation, reducing the temperature rise;
  • the resetting assembly 70 drives the moving iron core 43 to move away from the stationary contact 31 in the axial direction, the movable contact plate 42 and the stationary contact 31 At the moment of separation, an arc may be formed; at this time, the air pressure in the cavity below the movable iron core 43 in the second closed cavity 21 is increased, and the gas flows from the second closed cavity 21 to the first closed cavity 11 and is blown through the nozzle 412.
  • the gap 80 between the stationary contact 31 and the movable contact plate 42 is achieved to eliminate the arc in the gap 80.
  • the hollow push rod 41 is provided with two oppositely disposed nozzles 412.
  • the two nozzles 412 are disposed above the movable contact plate 42 and abut against the movable contact plate 42 and opposite to the gap 80.
  • the nozzle 412 is blown toward the gap 80, thereby achieving the purpose of eliminating the arc.
  • the angle formed between each nozzle 412 and the venting duct 411 is a right angle or an acute angle, and the nozzle 412 extends toward the stationary contact 31.
  • the blowing direction of the nozzle 412 is required to be toward the gap 80 formed between the stationary contact 31 and the movable contact plate 42.
  • the angle formed between the nozzle 412 and the air passage 411 is a right angle or an acute angle.
  • the nozzle 412 is overlapped with the upper surface of the movable contact plate 42 to avoid excessive distance between the nozzle 412 and the gap 80 between the movable contact plate 42 and the static contact 31, which affects the blowing effect; when the nozzle 412 is When the angle formed between the air ducts 411 is an acute angle, the nozzle 412 is slightly inclined toward the movable contact plate 42 to ensure that the nozzle 412 blows air to both sides of the movable contact panel 42 to improve the arc extinguishing effect.
  • the magnetic circuit assembly 50 is used to drive the push assembly 40 to move from the second position to the first position, specifically for driving the push assembly 40 to move axially toward the stationary contact 31.
  • the magnetic circuit assembly 50 is disposed in the second frame body 20 and located at the periphery of the second sealed cavity 21.
  • the magnetic circuit assembly 50 is disposed on the periphery of the second closed cavity 21, and the movable iron core 43 disposed in the second closed cavity 21 is driven to move in the axial direction toward the stationary contact 31 to drive
  • the fixedly connected hollow push rod 41 and the movable contact plate 42 thereon are axially moved toward the stationary contact 31 to bring the movable contact plate 42 into contact with the two stationary contacts 31, thereby achieving conduction of the controlled circuit. the goal of.
  • the magnetic circuit assembly 50 includes a coil 51 disposed at the periphery of the second closed cavity 21 and a control circuit 52 connected to the coil 51.
  • the control circuit 52 is a low voltage circuit that can be manually or automatically turned on to allow the coil 51 to pass 12v or 24v of direct current.
  • an electromagnetic field is generated in the coil 51 connected to the control circuit 52, so that the movable iron core 43 in the electromagnetic field moves axially toward the stationary contact 31 under the action of the electromagnetic force, thereby driving the hollow
  • the push rod 41 drives the movable contact plate 42 to move in the axial direction toward the stationary contact 31, so that the movable contact plate 42 is in contact with the two stationary contacts 31, thereby turning on the controlled circuit.
  • the second frame body 20 and the first frame body 10 are connected by a pallet.
  • the pallet comprises an insulating pallet 12 connected to the first frame body 10 and a magnetic guiding bracket 22 connected to the second frame body 20.
  • the second frame main body 20 includes a magnetic conductive frame (not shown) and an insulating case (not shown) provided at the periphery of the magnetic conductive frame.
  • the magnetic conductive frame and the magnetic conductive plate 22 are all made of a magnetic conductive material, including but not limited to the electrical pure iron in the embodiment.
  • the magnetically permeable frame and the magnetically conductive plate 22 form a magnetic circuit with the energized coil 51, that is, the magnetic induction line emerges from the upper portion of the coil 51, along the magnetically conductive plate 22 to the magnetically permeable frame, and then returns to the bottom of the coil 51 to increase the driving force.
  • the electromagnetic force of the iron core 43 moving in the axial direction toward the stationary contact 31 can drive the movable iron core 43 to move more rapidly in the axial direction toward the stationary contact 31, thereby improving the sensitivity of the relay.
  • the control circuit 52 when the control circuit 52 is turned on, the current of the control circuit 52 passes through the coil 51, so that an electromagnetic field is formed in the coil 51, and the movable iron core 43 is supplied with an electromagnetic force moving in the axial direction toward the stationary contact 31.
  • the hollow push rod 41 is moved in the axial direction toward the stationary contact 31, and the movable contact plate 42 on the hollow push rod 41 is connected to the static contact 31, so that the controlled circuit is turned on.
  • the second closed cavity The gas pressure of the gas in the chamber below the moving iron core 43 in 21 is lowered, which is much lower than the air pressure at the nozzle 412, so that the gas flows from the first closed cavity 11 to the second closed cavity 21.
  • the resetting assembly 70 is configured to drive the pusher assembly 40 to move from the first position to the second position, specifically for driving the movable iron core 43 to move axially away from the stationary contact 31.
  • the reset assembly 70 is disposed in the second closed cavity 21 and above the movable iron core 43.
  • the reset assembly 70 includes an elastic member 71 and a fixing member 72.
  • the fixing member 72 is disposed at the periphery of the hollow push rod 41 and above the movable iron core 43 and forms an annular cavity with the hollow push rod 41.
  • the fixing member 72 can be made of an insulating material such as injection molding or ceramics.
  • the resilient member 71 is disposed within the annular cavity and includes, but is not limited to, a spring in this embodiment.
  • the relay further includes two arc extinguishing assemblies 60 disposed on the periphery of the first frame body 10.
  • Each arc extinguishing assembly 60 is disposed opposite a stationary contact 31 for eliminating an arc formed in the gap 80 between the stationary contact 31 and the movable contact plate 42.
  • two gaps 80 are formed between the two static contacts 31 and the movable contact plate 42.
  • an arc may be generated in the gap 80.
  • the hollow push rod 41 is disposed at the center position of the two stationary contacts 31 such that the distance between the two nozzles 412 of the hollow push rod 41 to the corresponding gap 80 is the same to ensure the arc elimination effect.
  • the arc extinguishing assembly 60 includes a first arc extinguishing magnet 61 and a second arc extinguishing magnet 62 disposed opposite to each other in a periphery of the first frame body 10, and the first arc extinguishing magnet 61 and the second arc extinguishing magnet 62 are positive.
  • Set for gap 80 The opposite faces of the first arc extinguishing magnet 61 and the second arc extinguishing magnet 62 have opposite polarities.
  • the N pole of the first arc extinguishing magnet 61 faces the S pole of the second arc extinguishing magnet 62, and an electromagnetic field is formed between the first arc extinguishing magnet 61 and the second arc extinguishing magnet 62.
  • the direction of the magnetic field line is always from N.
  • the pole is connected to the S pole; when the static contact 31 is in contact with or separated from the movable contact plate 42, the positive or negative end between the first arc extinguishing magnet 61 and the second arc extinguishing magnet 62 is disposed. Current is passed.
  • the left hand is flat, so that the thumb is perpendicular to the rest of the four fingers, and both are in a plane with the palm, and the left hand is placed in the magnetic field, so that the magnetic line passes vertically through the palm, and the palm faces the N pole.
  • the direction pointed by the thumb is the direction of the force; if the arc is generated when the static contact 31 and the movable contact plate 42 are separated in the magnetic field, the force is based on the left-hand rule, so that the gap
  • the force of the arc in 80 is to the left and right sides, to avoid the arc accumulating in the gap 80, and affect the normal operation of the relay.
  • the relay When the relay is reversely energized and pulled off (ie, when the currents of the two stationary contacts 31 are opposite), the magnetic force pulls the arc toward the middle of the stationary contact 31, due to the presence of the airflow of the two nozzles 412, especially the direction of the two nozzles 412.
  • the line connecting the two static contacts 31 is not in a straight line (as shown in FIG. 4)
  • the arc intersection portion of the inner pull can be greatly reduced, which is favorable for the arc to be extinguished.
  • the direction of the two nozzles 412 is parallel to the line connecting the two stationary contacts 31 (as shown in FIG. 3), the temperature of the arc can be lowered during the reverse pulling, and the arc extinguishing effect is improved.
  • the first closed cavity 11 and the second closed cavity 21 are communicated through the air duct 411 and the nozzle 412 in the hollow push rod 41, and the movable contact plate 42 fixed to the hollow push rod 41 is fixed.
  • the movable iron core 43 are respectively located in the first closed cavity 11 and the second closed cavity 21; when the resetting assembly 70 drives the movable iron core 43 to move axially away from the stationary contact 31, the second closed cavity is made
  • the gas in 21 is blown from the ventilation duct 411 through the nozzle 412 to the gap 80 formed between the stationary contact 31 and the movable contact plate 42 to achieve the effect of eliminating the arc; moreover, it is advantageous to increase the first closed cavity 11 and the first
  • the fluidity of the gas in the second closed cavity 21 reduces the gas temperature and reduces the probability of the first closed cavity 11 bursting due to excessive temperature.
  • the hollow push rod 41 drives the movable contact plate 42 and the moving iron core 43 to move up and down as a whole, the resistance of the hollow push rod 41 is reduced compared to the resistance of the solid push rod, and the relay is turned on or off. Faster, making the relay more sensitive.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

一种继电器。该继电器包括第一框架主体、第二框架主体、引出端组件、推动组件和复位组件；第一框架主体内设有第一密闭空腔；第二框架主体内设有第二密闭空腔；引出端组件包括两个设置在第一密闭空腔内的静触点；推动组件包括中空推动杆、动触板和动铁芯；动触板固定在中空推动杆的一端，位于第一密闭空腔内，与静触点之间形成有间隙；动铁芯固定设置在中空推动杆的另一端，并位于第二密闭空腔内；中空推动杆上设有用于连通第一密闭空腔和第二密闭空腔的通气管道、以及与通气管道连通的喷嘴，喷嘴位于动触板上方。该继电器的消弧效果更好，且对受控电路的控制更灵敏。

Description

继电器
本申请要求于2017年04月28日提交中国专利局、申请号为201710295994.8、发明名称为“继电器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电控制器件领域，尤其涉及一种继电器。
背景技术
继电器是一种电控制器件，通常应用在自动化控制电路中，是用小电流去控制大电流运作的一种“自动开关”，在电路中起到自动调节、安全保护和转换电路等作用。现有继电器通常包括框架主体、引出端部分、动簧部分、磁路系统和推动机构。引出端部分包括引出端和固定在引出端底部的静触点。动簧部分设置在框架主体内，且其上设有动触点。磁路系统用于控制推动机构推动动簧部分工作，以使动簧部分上的动触点与引出端部分的静触点接触或分离，以完成继电器的导通或断开控制。其中，框架主体外壳通常采用塑料等绝缘材料制作而成。
当继电器应用在比较高的负载时，如在开断电压超过10V或电流超过100mA的电路中，在静触点和动触点之间的间隙(以下简称为间隙)中会产生一团温度极高、亮度极强并能导电的气体，称为电弧。电弧是气体放电的一种形式，若电弧打在塑料制作而成的框架主体上时，容易使塑料碳 化，从而导致框架主体的绝缘性急剧下降，严重时可能导致继电器烧毁。
现有继电器通过在间隙外周设置磁钢，以对间隙处产生的电弧进行拉弧，以实现降低电弧的目的。这种拉弧机构完全依靠磁场对电弧中电流的电磁力来拉长电弧，从而使电弧电压增加而达到熄灭电弧的目的，其消弧效果受限于电弧中电流的电磁力，消弧效果不佳；而且，其拉弧过程中可能因框架主体内的几何结构的阻挡而导致其消弧效果降低。
发明内容
本发明提供一种继电器，以解决现有继电器消弧效果不佳的问题。
本发明解决其技术问题所采用的技术方案是：一种继电器，包括第一框架主体、第二框架主体、引出端组件、推动组件和驱动机构；所述第一框架主体内设有第一密闭空腔；所述第二框架主体内设有第二密闭空腔；所述引出端组件固定在所述第一框架主体上，包括一端伸入所述第一密闭空腔内，另一端伸出所述第一密闭空腔的两个静触点；
所述推动组件包括中空推动杆、动触板和动铁芯；所述动触板固定在所述中空推动杆的一端，位于所述第一密闭空腔内，所述动触板与所述静触点之间形成有间隙；所述动铁芯固定设置在所述中空推动杆的另一端，并位于所述第二密闭空腔内；所述中空推动杆上设有用于连通所述第一密闭空腔和所述第二密闭空腔的通气管道以及与所述通气管道连通的喷嘴；所述动触板位于所述喷嘴与所述动铁芯之间的中空推动杆上；
所述驱动机构，用于驱动所述推动组件在第一位置和第二位置之间往复运动；所述推动组件位于第一位置时，所述动触板与所述静触点接触导 通；所述推动组件位于第二位置时，所述动触板与所述静触点断开电连接；
在所述推动组件由第一位置向第二位置移动时，气体从所述第二密闭空腔流向所述第一密闭空腔，通过所述喷嘴吹向所述间隙。
优选地，所述中空推动杆上设有两个相对设置的喷嘴，每一所述喷嘴与所述通气管道之间形成的夹角为直角或锐角，且所述喷嘴向所述静触点方向延伸。
优选地，所述驱动机构包括用于驱动所述推动组件由第一位置向所述第二位置移动的复位组件；所述复位组件设置在所述第二密闭空腔内，并位于所述动铁芯与所述动触板之间。
优选地，所述复位组件包括弹性件和固定件；所述固定件设置在所述中空推动杆外围，且与所述中空推动杆之间形成一环形空腔；所述弹性件设置在所述环形空腔内。
优选地，所述驱动机构包括用于驱动所述推动组件由第二位置向所述第一位置移动的磁路组件，所述磁路组件设置在所述第二框架主体上，并位于所述第二密闭空腔外围。
优选地，所述磁路组件包括设置在所述第二密闭空腔外围的线圈。
优选地，所述第二框架主体包括导磁框架和设置在所述导磁框架外围的绝缘壳体；所述线圈设置在所述导磁框架内。
优选地，所述继电器还包括设置在所述第一框架主体外围的两个消弧组件；每一消弧组件与一所述静触点相对设置，用于消除所述间隙内形成的电弧。
优选地，所述消弧组件包括平行相对设置在所述第一框架主体外围的 第一消弧磁铁和第二消弧磁铁，所述第一消弧磁铁和所述第二消弧磁铁正对所述间隙设置。
优选地，所述引出端组件还包括正引出端和负引出端，所述正引出端和所述负引出端分别与一所述静触点相连。
优选地，所述动触板上还设有与所述静触点相匹配的动触点。
本发明与现有技术相比具有如下优点：本发明所提供的继电器中，通过中空推动杆内的通气管道和喷嘴连通第一密闭空腔和第二密闭空腔，并使固定在中空推动杆上的动触板和动铁芯分别位于第一密闭空腔和第二密闭空腔内；当驱动机构驱动推动组件由第一位置向第二位置移动时，第二密闭空腔的气压增大，气体从第二密闭空腔流向第一密闭空腔，通过喷嘴吹向静触点与动触板之间的间隙，以达到消除电弧的效果；而且，有利于增加第一密闭空腔和第二密闭空腔内气体的流动性，以降低气体温度，降低第一密闭空腔因温度过高而爆裂的机率。另外，中空推动杆带动动触板和动铁芯整体上下移动过程中，中空推动杆受到的阻力相比于实心推动杆受到的阻力减少，会使继电器的导通或断开速度更快，使得继电器更灵敏。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1是本发明一实施例中继电器的一剖面图。
图2是图1中A部分的爆炸图。
图3是本发明一实施例中继电器的一俯视图。
图4是本发明一实施例中继电器的另一俯视图。
图中：10、第一框架主体；11、第一密闭空腔；12、绝缘托板；20、第二框架主体；21、第二密闭空腔；22、导磁托板；30、引出端组件；31、静触点；32、正引出端；33、负引出端；40、推动组件；41、中空推动杆；411、通气管道；412、喷嘴；42、动触板；43、动铁芯；50、磁路组件；51、线圈；52、控制电路；60、消弧组件；61、第一消弧磁铁；62、第二消弧磁铁；70、复位组件；71、弹性件；72、固定件；80、间隙。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现对照附图详细说明本发明的具体实施方式。
图1示出本实施例中的继电器。如图1所示，该继电器包括第一框架主体10、第二框架主体20、引出端组件30、推动组件40和驱动机构。
如图1-图4所示，第一框架主体10内设有第一密闭空腔11，以避免第一框架主体10与外界空气流通。其中，可以理解的是，第一框架主体10可呈立方体设置，其结构简单，制作方便。进一步地，第一密闭空腔11内填充氦气、氢气或氮气等性能稳定的气体，通过第一密闭空腔11内气体的流通，以达到冷却静触点31和动触板42之间的间隙80内电弧的目的。
如图1-图4所示，引出端组件30固定在第一框架主体10上，并与受控电路相连，该受控电路通常为高压电路。具体地，该引出端组件30包括两个静触点31，两个静触点31一端介入第一密闭空腔11内，另一端伸出第一密闭空腔11，静触点31伸出第一密闭空腔11的一端与受控电路相连。
如图1所示，第二框架主体20内设有第二密闭空腔21，以避免第二密闭空腔21与外界空气流通。进一步地，第二密闭空腔21内填充氦气、氢气或氮气等性能稳定的气体，第二密闭空腔21与第一密闭空腔11通过推动组件40的中空推动杆41连通，以实现气体流通，从而达到冷却静触点31与动触板42形成的电弧的目的。
推动组件40设置在第一框架主体10和第二框架主体20之间。推动组件40包括中空推动杆41、动触板42和动铁芯43。其中，动触板42固定设置在中空推动杆41的一端，位于第一密闭空腔11内，动触板42与两个静触点31之间形成有间隙80。进一步地，动触板42上还可设有与两个静触点31相匹配的动触点(图中未示出)，当静触点31与动触点接触时，受控电路导通。动铁芯43固定设置在中空推动杆41的另一端，并位于第二密闭空腔21内。中空推动杆41上设有用于连通第一密闭空腔11和第二密闭空腔21的通气管道411、以及与通气管道411连通的喷嘴412。其中，动触板42位于喷嘴412与动铁芯43之间的中空推动杆41上。
驱动机构用于驱动推动组件40在第一位置和第二位置之间往复运动；推动组件40位于第一位置时，动触板42与静触点31接触导通；推动组件40位于第二位置时，动触板42与静触点31断开电连接。
在本发明的一些实施例中，驱动机构包括用于驱动推动组件40由第一位置向第二位置移动的复位组件70、以及用于驱动推动组件40由第二位置向第一位置移动的磁路组件50。具体地，当磁路组件50驱动推动组件40由第二位置向第一位置移动时，推动组件40上的动触板42沿轴向朝靠近静触点31方向移动，会使动触板42与静触点31接触导通，从而使受控 电路导通。反之，当复位组件70驱动推动组件40由第一位置向第二位置移动时，推动组件40上的动触板42沿轴向朝远离静触点31方向移动，会使动触板42与静触点31分离，以使受控电路断开电连接。
在推动组件40由第一位置向第二位置移动时，气体从第二密闭空腔21流向第一密闭空腔11，通过喷嘴412吹向间隙80。当驱动机构驱动推动组件40由第一位置向第二位置移动时，则动触板42与静触点31从接触导通转为断开电连接，此时，动触板42与静触点31之间的间隙80内可能形成电弧；而推动组件40由第一位置向第二位置移动过程中，第二密闭空腔21内的气压增大，以使气体从第二密闭空腔21流向第一密闭空腔11，通过喷嘴412吹向间隙80，以达到消除电弧的效果；而且，有利于增加第一密闭空腔11和第二密闭空腔21内气体的流动性，以降低气体温度，降低第一密闭空腔11因温度过高而爆裂的机率。
本实施例中，以第一框架主体10设置在第二框架主体20上方为例，则静触点31设置在动触板42上方，则磁路组件50用于驱动动触板42沿轴向朝靠近静触点31方向移动(即由第二位置向第一位置移动)是向上移动；相应地，复位组件70用于驱动动触板42沿轴向朝远离静触点31方向移动(即由第一位置向第二位移移动)是向下移动。
具体地，引出端组件30还包括分别与受控电路的正负端相连的正引出端32和负引出端33，正引出端32和负引出端33分别与静触点31伸出第一密闭空腔11的一端相连。当磁路组件50驱动推动组件40沿轴向朝靠近静触点31方向移动(即由第二位置向第一位置移动)时，推动组件40上的动触板42会与两个静触点31接触，以使两个静触点31上的正引出端 32和负引出端33所连接的受控电路导通；反之，当复位组件70驱动推动组件40沿轴向朝远离静触点31方向移动(即由第一位置向第二位置移动)时，推动组件40上的动触板42会与两个静触点31分离，使得两个静触点31上的正引出端32和负引出端33所连接的受控电路断开。
可以理解地，在磁路组件50和复位组件70的作用下，动触板42可与静触点31接触导通或分离断开电连接。动铁芯43固定设置在中空推动杆41的另一端，可在磁路组件50的作用下带动中空推动杆41及其上的动触板42沿轴向朝靠近静触点31方向移动(即由第二位置向第一位置移动)；并在复位组件70的作用下带动中空推动杆41及其上的动触板42沿轴向朝远离静触点31方向移动(即由第一位置向第二位置移动)。
本实施例中，静触点31和动触板42均设置在第一密闭空腔11内，在静触点31与动触板42分离瞬间，静触点31和动触板42之间可能形成电弧，使得形成第一密闭空腔11的第一框架主体10不仅需要采用绝缘材料制作而成，而是要采用耐电弧材料制作而成，以避免电弧对第一框架主体10造成损坏。其中，耐电弧材料是一种耐高温的绝缘材料，可以为PET/GF阻燃性耐电弧复合材料、复合聚四氟乙烯耐电弧材料、耐热耐弧有机硅塑料或陶瓷片，其中陶瓷成本低且性能稳定，故本实施例中采用陶瓷制作第一框架主体10。采用耐电弧材料制作而成的第一框架主体10对电弧具有冷却作用，可提高继电器的可靠性和使用寿命。
本实施例中，动触板42呈板状，且呈板状设置的动触板42上设有两个静触点31相匹配的动触点；而动触板42套设固定在中空推动杆41上，可随中空推动杆41沿轴向朝靠近或远离静触点31方向移动(即在第一位置 和第二位置之间往复运动)。其中，动触板42采用导电材料制作而成，以使动触板42上的两个动触点与两个静触点31接触时，与正引出端32和负引出端33相连的受控电路导通，以实现对受控电路的通断控制。当动触板42上的两个动触点与两个静触点31接触时，与两个静触点31相连的受控电路导通，由于受控电路通常为高压电路，在静触点31与动触板42分离瞬间，静触点31与动触板42之间的间隙80内容易形成电弧，影响继电器的正常工作。本实施例中，将静触点31与动触板42之间的间隙80称为弧隙。
本实施例中，动铁芯43与磁路组件50配合可驱动中空推动杆41沿轴向朝靠近静触点31方向移动，即磁路组件50驱动动铁芯43沿轴向朝靠近静触点31方向移动时，使得整个推动组件40由第二位置向第一位置移动，以使动触板42与静触点31接触导通。相应地，动铁芯43与复位组件70配合可驱动中空推动杆41沿轴向朝远离静触点31方向移动，即复位组件70驱动动铁芯43沿轴向朝远离静触点31方向移动时，使得整个推动组件40由第一位置向第二位置移动，以使动触板42与静触点31断开电连接。具体地，动铁芯43呈管状设置，套设并固定在中空推动杆41上，在磁路组件50的线圈51内形成的电磁场中相当于直导体时，可在电磁场的作用下带动中空推动杆41沿轴向朝靠近静触点31方向移动。动铁芯43在沿轴向朝靠近静触点31方向移动过程中，会与复位组件70相抵触，并在磁路组件50不工作时，复位组件70驱动动铁芯43沿轴向朝远离静触点31方向移动。可以理解地，动铁芯43的外径与第二密闭空腔21的内径相匹配，以使动铁芯43沿轴向朝靠近或远离静触点31方向移动过程中，第二密闭 空腔21中位于动铁芯43下方的腔体内的气体的气压发生变化，以使第一密闭空腔11和第二密闭空腔21内的气体流通，以达到消除电弧目的。
本实施例中以第一框架主体10设置在第二框架主体20上方为例，则动触板42位于喷嘴412下方。在复位组件70驱动动铁芯43沿轴向朝远离静触点31方向移动时，其中，通气管道411设置在中空推动杆41内，且通气管道411的一端及套设在在中空推动杆41上的动铁芯43均位于第二密闭空腔21内，另一端通过喷嘴412与第二密闭空腔21连通。当磁路组件50驱动动铁芯43沿轴向朝靠近静触点31方向移动时，使得第二密闭空腔21中位于动铁芯43下方的腔体内的气压降低，气体从第一密闭空腔11流向第二密闭空腔21，以实现气体流通，降低温升；当复位组件70驱动动铁芯43沿轴向朝远离静触点31方向移动时，动触板42与静触点31分离瞬间，可能导致电弧形成；此时，第二密闭空腔21中位于动铁芯43下方腔体内的气压增高，气体从第二密闭空腔21流向第一密闭空腔11，通过喷嘴412吹向静触点31与动触板42之间的间隙80，以达到消除间隙80内电弧的目的。
如图1-图4所示，中空推动杆41上设有两个相对设置的喷嘴412，两个喷嘴412设置在动触板42的上方，并紧靠动触板42，并与间隙80相对设置，以使动铁芯43沿轴向朝远离静触点31方向移动时，喷嘴412向间隙80吹气，从而达到消除电弧目的。每一喷嘴412与通气管道411之间形成的夹角为直角或锐角，且喷嘴412向静触点31方向延伸。由于动触板42设置在喷嘴412下方，在利用喷嘴412吹气达到消除电弧的过程中，需使喷嘴412吹气方向是朝向静触点31与动触板42之间形成的间隙80处， 以保证消弧效果，因此，需使喷嘴412向动触板42两侧方向延伸，且喷嘴412与通气管道411之间形成的夹角为直角或锐角。本实施例中，喷嘴412下方与动触板42上方重合，避免喷嘴412到动触板42与静触点31之间的间隙80之间的距离过大，影响吹气效果；当喷嘴412与通气管道411之间形成的夹角为锐角时，则喷嘴412略向动触板42倾斜，以保证喷嘴412向动触板42两侧吹气，提高消弧效果。
如图1所示，磁路组件50用于驱动推动组件40由第二位置向第一位置移动，具体用于驱动推动组件40沿轴向朝靠近静触点31方向移动。其中，磁路组件50设置在第二框架主体20内，并位于第二密闭空腔21外围。本实施例中，磁路组件50设置在第二密闭空腔21外围，可驱动设置在第二密闭空腔21内的动铁芯43沿轴向朝靠近静触点31方向移动，以带动与其固定相连的中空推动杆41及其上的动触板42沿轴向朝靠近静触点31方向移动，以使动触板42与两个静触点31接触，从而达到使受控电路导通的目的。
具体地，磁路组件50包括设置在第二密闭空腔21外围的线圈51和与线圈51相连的控制电路52。该控制电路52为低压电路，可手动或自动导通，以使线圈51上通12v或24v的直流电。当控制电路52导通时，与控制电路52相连的线圈51内产生电磁场，以使电磁场内的动铁芯43在电磁力的作用下沿轴向朝靠近静触点31方向移动，从而驱动中空推动杆41带动动触板42沿轴向朝靠近静触点31方向移动，使得动触板42与两个静触点31接触，从而使受控电路导通。当控制电路52断开时，与控制电路52 相连的线圈51内不产生电磁场，即无沿轴向朝靠近静触点31方向移动的电磁力驱动整个推动组件40沿轴向朝靠近静触点31方向移动或维持动触板42与静触点31接触，在复位组件70的作用下，会使整个推动组件40沿轴向朝远离静触点31方向移动，即使动触板42与两个静触点31分离，从而使受控电路断开。
本实施例中，第二框架主体20与第一框架主体10之间通过托板相连。其中，托板包括与第一框架主体10相连的绝缘托板12和与第二框架主体20相连的导磁托板22。而且，第二框架主体20包括导磁框架(图中未示出)和设置在导磁框架外围的绝缘壳体(图中未示出)。其中，导磁框架和导磁托板22均采用导磁材料制作而成，包括但不限于本实施例中的电工纯铁。导磁框架和导磁托板22与通电的线圈51形成磁回路，即磁感应线从线圈51上部出来，沿导磁托板22到导磁框架，再回到线圈51底部，以增大驱动动铁芯43沿轴向朝靠近静触点31方向移动的电磁力，可驱动动铁芯43更快速沿轴向朝靠近静触点31方向移动，提高继电器的灵敏度。
该继电器中，当控制电路52导通时，控制电路52的电流通过线圈51，使得线圈51内形成电磁场，给动铁芯43提供沿轴向朝靠近静触点31方向移动的电磁力，以带动中空推动杆41沿轴向朝靠近静触点31方向移动，中空推动杆41上的动触板42与静触点31相连，从而使得受控电路导通，此时，第二密闭空腔21中位于动铁芯43下方的腔体内的气体的气压降低，远低于喷嘴412处的气压，从而使气体从第一密闭空腔11流向第二密闭空腔21。当导通的动触板42与静触点31之间断开时，动触板42与静触点31之间的间隙80内可能形成电弧。当控制电路52断开时，无电流通过线 圈51，线圈51内无法形成电磁场，即无法再给动铁芯43提供沿轴向朝靠近静触点31方向移动的电磁力，难以维持动触板42与静触点31之间接触；在复位组件70作用下，推动组件40整体沿轴向朝远离静触点31方向移动，使得第二密闭空腔21中位于动铁芯43下方的腔体内的气体受到压缩，其气压增大，远高于喷嘴412处的气压，从而使气体从喷嘴412处吹出，吹向间隙80内，以达到消除间隙80内电弧的目的。
如图1所示，复位组件70用于驱动推动组件40由第一位置向第二位置移动，具体用于驱动动铁芯43沿轴向朝远离静触点31方向移动。其中，复位组件70设置在第二密闭空腔21内，并位于动铁芯43的上方。具体地，复位组件70包括弹性件71和固定件72。固定件72设置在中空推动杆41外围并位于动铁芯43上方，且与中空推动杆41之间形成一环形空腔。其中，固定件72可采用注塑或陶瓷等绝缘材料制作而成。弹性件71设置在环形空腔内，包括但不限于本实施例中的弹簧。本实施例中，当控制电路52导通时，与控制电路52相连的线圈51内形成电磁场，以给动铁芯43提供沿轴向朝靠近静触点31方向移动的电磁力F1，以使动触板42与静触点31接触，受控电路导通；此时，固定件72内的弹簧压缩，弹簧会给动铁芯43提供沿轴向朝远离静触点31方向移动的弹力F2，以维持动铁芯43与静触点31在静止状态。当控制电路52断开时，电磁力F1消失，弹簧放松，沿轴向朝远离静触点31方向移动的弹力F2会使动铁芯43沿轴向朝远离静触点31方向移动，使得第二密闭空腔21中位于动铁芯43下方的腔体内的气体受到压缩，其气压增大，远高于喷嘴412处的气压，形成气压差，以使第二密闭空腔21内的气体通过通气管道411后，从喷嘴412处吹出， 达到吹弧效果。
在本发明的一些实施例中，继电器还包括设置在第一框架主体10外围的两个消弧组件60。每一消弧组件60与一静触点31相对设置，用于消除静触点31与动触板42之间的间隙80内形成的电弧。可以理解的是，两个静触点31与动触板42之间形成两个间隙80，导电的静触点31和动触板42分离的瞬间，可能会在间隙80内产生电弧，本实施例中，通过在每一间隙80相对的位置设置消弧组件60，可以进一步消除相应间隙80内的电弧，进而提高继电器的安全性和使用寿命。本实施例中，中空推动杆41设置在两个静触点31的中心位置，以使中空推动杆41的两个喷嘴412到对应的间隙80的距离相同，以保证电弧消除效果。
如图3所示，消弧组件60包括平行相对设置在第一框架主体10外围的第一消弧磁铁61和第二消弧磁铁62，第一消弧磁铁61和第二消弧磁铁62正对间隙80设置。第一消弧磁铁61和第二消弧磁铁62的相对面极性相反。本实施例中，第一消弧磁铁61的N极正对第二消弧磁铁62的S极，第一消弧磁铁61和第二消弧磁铁62之间形成电磁场，磁力线方向始终是从N极到S极；在静触点31与动触板42接触或分离瞬间时，使得设置在第一消弧磁铁61和第二消弧磁铁62之间的正引向端或负引向端上电流通过。根据电磁学的左手定则：左手平展，使大拇指与其余四指垂直，且都与掌心在一个平面内，将左手放入磁场中，让磁感线垂直穿过掌心，掌心面向N极，四指指向电流所指方向，则大拇指所指向的方向为受力方向；若磁场中静触点31与动触板42分离瞬间有电弧产生时，其受力基于左手定则，以使间隙80内电弧的作用力向左右两侧，避免电弧在间隙80内累 积，而影响继电器正常运行。
在继电器反向通电拉断(即两个静触点31的电流相反时)，磁力将电弧往静触点31的中间拉，由于两个喷嘴412气流的存在，尤其是两个喷嘴412的方向与两个静触点31的连线不在一条直线上时(如图4所示)，可使内拉的电弧交汇部分大大减少，有利于电弧熄灭。若两个喷嘴412的方向与两个静触点31的连线平行(如图3所示)，则在反拉时也能降低电弧的温度，提高消弧效果。
本发明所提供的继电器中，通过中空推动杆41内的通气管道411和喷嘴412连通第一密闭空腔11和第二密闭空腔21，并使固定在中空推动杆41上的动触板42和动铁芯43分别位于第一密闭空腔11和第二密闭空腔21内；当复位组件70驱动动铁芯43沿轴向朝远离静触点31方向移动时，使得第二密闭空腔21内的气体从通气管道411经喷嘴412吹向静触点31和动触板42之间形成的间隙80处，以达到消除电弧的效果；而且，有利于增加第一密闭空腔11和第二密闭空腔21内气体的流动性，以降低气体温度，降低第一密闭空腔11因温度过高而爆裂的机率。另外，中空推动杆41带动动触板42和动铁芯43整体上下移动过程中，中空推动杆41受到的阻力相比于实心推动杆受到的阻力减少，会使继电器的导通或断开速度更快，使得继电器更灵敏。
本发明是通过上述具体实施例进行说明的，本领域技术人员应当明白，在不脱离本发明范围的情况下，还可以对本发明进行各种变换和等同替代。另外，针对特定情形或具体情况，可以对本发明做各种修改，而不脱离本发明的范围。因此，本发明不局限于所公开的具体实施例，而应当包括落 入本发明权利要求范围内的全部实施方式。

Claims (11)

  1. 一种继电器，其特征在于，包括第一框架主体、第二框架主体、引出端组件、推动组件和驱动机构；所述第一框架主体内设有第一密闭空腔；所述第二框架主体内设有第二密闭空腔；所述引出端组件固定在所述第一框架主体上，包括一端伸入所述第一密闭空腔内，另一端伸出所述第一密闭空腔的两个静触点；
    所述推动组件包括中空推动杆、动触板和动铁芯；所述动触板固定在所述中空推动杆的一端，位于所述第一密闭空腔内，所述动触板与所述静触点之间形成有间隙；所述动铁芯固定设置在所述中空推动杆的另一端，并位于所述第二密闭空腔内；所述中空推动杆上设有用于连通所述第一密闭空腔和所述第二密闭空腔的通气管道以及与所述通气管道连通的喷嘴；所述动触板位于所述喷嘴与所述动铁芯之间的中空推动杆上；
    所述驱动机构，用于驱动所述推动组件在第一位置和第二位置之间往复运动；所述推动组件位于第一位置时，所述动触板与所述静触点接触导通；所述推动组件位于第二位置时，所述动触板与所述静触点断开电连接；
    在所述推动组件由第一位置向第二位置移动时，气体从所述第二密闭空腔流向所述第一密闭空腔，通过所述喷嘴吹向所述间隙。
  2. 根据权利要求1所述的继电器，其特征在于，所述中空推动杆上设有两个相对设置的喷嘴，每一所述喷嘴与所述通气管道之间形成的夹角为直角或锐角，且所述喷嘴向所述静触点方向延伸。
  3. 根据权利要求1所述的继电器，其特征在于，所述驱动机构包括用于驱动所述推动组件由第一位置向所述第二位置移动的复位组件；所述复 位组件设置在所述第二密闭空腔内，并位于所述动铁芯与所述动触板之间。
  4. 根据权利要求3所述的继电器，其特征在于，所述复位组件包括弹性件和固定件；所述固定件设置在所述中空推动杆外围，且与所述中空推动杆之间形成一环形空腔；所述弹性件设置在所述环形空腔内。
  5. 根据权利要求1所述的继电器，其特征在于，所述驱动机构包括用于驱动所述推动组件由第二位置向所述第一位置移动的磁路组件，所述磁路组件设置在所述第二框架主体上，并位于所述第二密闭空腔外围。
  6. 根据权利要求5所述的继电器，其特征在于，所述磁路组件包括设置在所述第二密闭空腔外围的线圈。
  7. 根据权利要求6所述的继电器，其特征在于，所述第二框架主体包括导磁框架和设置在所述导磁框架外围的绝缘壳体；所述线圈设置在所述导磁框架内。
  8. 根据权利要求1所述的继电器，其特征在于，所述继电器还包括设置在所述第一框架主体外围的两个消弧组件；每一消弧组件与一所述静触点相对设置，用于消除所述间隙内形成的电弧。
  9. 根据权利要求8所述的继电器，其特征在于，所述消弧组件包括平行相对设置在所述第一框架主体外围的第一消弧磁铁和第二消弧磁铁，所述第一消弧磁铁和所述第二消弧磁铁正对所述间隙设置。
  10. 根据权利要求1所述的继电器，其特征在于，所述引出端组件还包括正引出端和负引出端，所述正引出端和所述负引出端分别与一所述静触点相连。
  11. 根据权利要求1所述的继电器，其特征在于，所述动触板上还设有 与所述静触点相匹配的动触点。
PCT/CN2018/081077 2017-04-28 2018-03-29 继电器 Ceased WO2018196547A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710295994.8A CN108807043B (zh) 2017-04-28 2017-04-28 继电器
CN201710295994.8 2017-04-28

Publications (1)

Publication Number Publication Date
WO2018196547A1 true WO2018196547A1 (zh) 2018-11-01

Family

ID=63918805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/081077 Ceased WO2018196547A1 (zh) 2017-04-28 2018-03-29 继电器

Country Status (2)

Country Link
CN (1) CN108807043B (zh)
WO (1) WO2018196547A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022545562A (ja) * 2019-08-28 2022-10-27 エルエス、エレクトリック、カンパニー、リミテッド アーク経路形成部及びそれを含む直流リレー
EP4560678A1 (en) * 2023-11-21 2025-05-28 Sensata Technologies, Inc. Direct current contactors with improved evacuation air pathways

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110164731B (zh) * 2019-06-12 2020-11-17 贵州天义电器有限责任公司 一种气平衡继电器
CN112185767A (zh) * 2020-10-29 2021-01-05 阜阳中骄智能科技有限公司 用于继电器的驱动装置及具有其的继电器
TWI772120B (zh) * 2021-07-23 2022-07-21 松川精密股份有限公司 電磁繼電器
CN115188639A (zh) * 2022-06-30 2022-10-14 上海阿尔斯通交通电气有限公司 一种高速断路器
CN116403844B (zh) * 2023-02-23 2023-12-12 徐州中铁电气有限公司 一种电力系统电路保护用继电器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205723345U (zh) * 2016-05-31 2016-11-23 比亚迪股份有限公司 继电器
JP6063193B2 (ja) * 2012-09-27 2017-01-18 日本特殊陶業株式会社 継電器、継電器の製造方法
CN106531563A (zh) * 2017-01-04 2017-03-22 昆山国力源通新能源科技有限公司 磁保持节能型高压直流接触器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0495322A (ja) * 1990-08-03 1992-03-27 Hitachi Ltd ガス遮断器
US5519370A (en) * 1991-03-28 1996-05-21 Kilovac Corporation Sealed relay device
CN105531783B (zh) * 2013-08-29 2019-01-08 松下知识产权经营株式会社 接触装置
CN105097358A (zh) * 2014-05-19 2015-11-25 浙江道为尔科技有限公司 一种电磁电源开关
DE112015002371T5 (de) * 2014-05-20 2017-02-16 Panasonic Intellectual Property Management Co., Ltd. Kontakteinrichtung
KR20170009348A (ko) * 2015-07-16 2017-01-25 엘에스산전 주식회사 영구자석을 포함한 전기자동차용 릴레이 및 그 제조방법
CN205211669U (zh) * 2015-11-30 2016-05-04 比亚迪股份有限公司 继电器的推动机构及具有其的继电器
CN205863097U (zh) * 2016-06-13 2017-01-04 浙江三佑电气有限公司 一种高压真空直流接触器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6063193B2 (ja) * 2012-09-27 2017-01-18 日本特殊陶業株式会社 継電器、継電器の製造方法
CN205723345U (zh) * 2016-05-31 2016-11-23 比亚迪股份有限公司 继电器
CN106531563A (zh) * 2017-01-04 2017-03-22 昆山国力源通新能源科技有限公司 磁保持节能型高压直流接触器

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022545562A (ja) * 2019-08-28 2022-10-27 エルエス、エレクトリック、カンパニー、リミテッド アーク経路形成部及びそれを含む直流リレー
JP7310012B2 (ja) 2019-08-28 2023-07-18 エルエス、エレクトリック、カンパニー、リミテッド アーク経路形成部及びそれを含む直流リレー
US11784018B2 (en) 2019-08-28 2023-10-10 Ls Electric Co., Ltd. Arc path formation unit and direct current relay including same
EP4560678A1 (en) * 2023-11-21 2025-05-28 Sensata Technologies, Inc. Direct current contactors with improved evacuation air pathways

Also Published As

Publication number Publication date
CN108807043B (zh) 2019-11-08
CN108807043A (zh) 2018-11-13

Similar Documents

Publication Publication Date Title
WO2018196547A1 (zh) 继电器
CN103201809B (zh) 开闭装置
JP4866447B2 (ja) 継電器
EP3018686A1 (en) Framework of relay and relay
WO2022099934A1 (zh) 一种带有辅助触点的高压直流继电器
WO2018205296A1 (zh) 一种带有辅助触点的直流接触器
CN110896005B (zh) 一种真空断路器信号反馈机构
CN108364835B (zh) 高电压直流继电器
WO2016177009A1 (zh) 接触器和接触器系统
CN205723344U (zh) 继电器
CN205657030U (zh) 能引弧的电磁脱扣器及小型断路器
CN111430184A (zh) 一种永磁灭弧无极性高压大电流直流接触器
CN213691893U (zh) 一种带有辅助触点的高压直流继电器
CN218274338U (zh) 接触器的触头灭弧系统以及接触器
US12198881B2 (en) Contact apparatus and electromagnetic switch
CN102915894B (zh) 直流断路器吹弧装置
CN110620022A (zh) 高压大电流磁力保持真空继电器
CN110098084A (zh) 一种真空开关
CN206040548U (zh) 继电器
CN204390940U (zh) 直流接触器灭弧装置
WO2019080709A1 (zh) 一种耐瞬时大电流冲击的高压继电器
CN107622917A (zh) 一种电磁继电器
CN222421684U (zh) 一种开关装置
CN224067645U (zh) 开关装置
CN219497669U (zh) 接触器和电气装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18789996

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18789996

Country of ref document: EP

Kind code of ref document: A1