WO2023273409A1 - 一种继电器 - Google Patents

一种继电器 Download PDF

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Publication number
WO2023273409A1
WO2023273409A1 PCT/CN2022/080406 CN2022080406W WO2023273409A1 WO 2023273409 A1 WO2023273409 A1 WO 2023273409A1 CN 2022080406 W CN2022080406 W CN 2022080406W WO 2023273409 A1 WO2023273409 A1 WO 2023273409A1
Authority
WO
WIPO (PCT)
Prior art keywords
moving
yoke
static
space
contact plate
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/CN2022/080406
Other languages
English (en)
French (fr)
Inventor
黄加坤
陆涛
雷小勇
戴湘豫
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
Priority to JP2023560210A priority Critical patent/JP7639170B2/ja
Priority to EP22831240.1A priority patent/EP4300533A4/en
Priority to KR1020237032493A priority patent/KR102859694B1/ko
Publication of WO2023273409A1 publication Critical patent/WO2023273409A1/zh
Priority to US18/472,326 priority patent/US20240029985A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/38—Part of main magnetic circuit shaped to suppress arcing between the contacts of the relay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/065—Relays having a pair of normally open contacts rigidly fixed to a magnetic core movable along the axis of a solenoid, e.g. relays for starting automobiles
    • 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
    • H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
    • H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets

Definitions

  • the present disclosure belongs to the technical field of relays, and in particular relates to a relay.
  • Relays are widely used in high-voltage equipment, and the short-circuit resistance of relays is an important indicator for evaluating their quality.
  • the short-circuit current will flow through the moving contact and the static contact of the relay, so that a large repulsion force will be generated between the moving contact and the static contact, and the moving contact will The head and the static contact are separated, which eventually leads to a severe arcing phenomenon, which makes the relay ineffective. Therefore, the relay in the prior art has the problem of weak short-circuit resistance.
  • the present disclosure provides a relay aiming at the technical problem of weak short-circuit resistance capability of the relay in the prior art.
  • an embodiment of the present disclosure provides a relay including a static contact assembly, a moving contact plate, a static yoke, a moving yoke, and a push rod assembly, the static yoke and the moving yoke are arranged oppositely;
  • the moving contact plate is installed on the moving yoke at a position opposite to the static contact assembly; an isolation space is provided between the moving contact plate and the moving yoke;
  • the static contact assembly and the static yoke are arranged on the side of the moving contact plate away from the push rod assembly; the push rod assembly is used to push the moving yoke to move toward the static yoke to The moving contact plate is made to contact the static contact assembly.
  • a U-shaped groove is provided on the moving yoke, the moving contact plate is installed in the U-shaped groove, and the isolation space includes a side isolation space and/or a bottom isolation space;
  • the isolation space is arranged between the outer side of the moving touch board and the inner side wall of the U-shaped groove; the bottom isolation space is arranged between the bottom end of the moving touch board and the bottom surface of the U-shaped groove.
  • the moving yoke is further provided with a first mounting hole communicating with the first opening, and the moving contact plate is provided with a boss matching the first mounting hole, and the moving contact The plate is mounted on the moving yoke through the boss inserted into the first mounting hole.
  • the relay further includes an insulating sleeve sleeved on the protruding post, and the protruding post is plugged into the first installation hole through the insulating sleeve.
  • the relay further includes an insulator installed in the isolated space, and the insulator is connected between the moving contact plate and the moving yoke.
  • the relay further includes a mounting bracket provided with an internal space, the push rod assembly is connected to the mounting bracket; the moving yoke and the moving contact plate are installed in the internal space;
  • the mounting bracket is also provided with a first opening and a second opening communicating with the internal space;
  • the moving magnetic yoke includes a magnetic attraction part protruding from the first opening and opposite to the static magnetic yoke ;
  • the moving contact plate includes a moving contact portion that protrudes from the second opening and is opposite to the static contact assembly.
  • the relay further includes an elastic member installed in the inner space, one end of the elastic member is connected to an end of the moving yoke away from the static yoke, and the other end of the elastic member is connected to the The push rod assembly described above.
  • the mounting bracket is provided with a second mounting hole communicating with the internal space
  • the push rod assembly includes a push rod and an insulating block installed in the second mounting hole, the push rod passes through the insulating Blocks connect the elastics.
  • the mounting bracket includes an upper bracket and a lower bracket; the upper bracket is provided with a first engaging portion, the lower bracket is provided with a second engaging portion, and the upper bracket passes through the second
  • the first clamping part in the clamping part is connected to the lower bracket, the first opening is set on the upper bracket, and the second opening is set on the upper bracket or/and the lower bracket .
  • the relay further includes a casing provided with an accommodating space, the static contact assembly is installed on the casing, and the static contact assembly includes a The static contact part is provided; the static magnetic yoke is installed on the inner side wall of the accommodation space at a position opposite to the magnetic attraction part; the moving contact plate and the moving magnetic yoke are both located in the accommodation space.
  • the push rod assembly includes a push rod, a moving iron core, and a static iron core provided with a through hole; the static iron core is fixedly installed on the casing, and a sliding space is also provided on the casing, so The sliding space communicates with the accommodating space through the through hole;
  • the moving iron core is slidably installed in the sliding space, one end of the pushing rod is connected to the moving magnetic yoke, and the other end of the pushing rod is fixedly connected to the moving iron core through the through hole.
  • the housing includes a partition, an upper case and a lower case; the upper case is connected to the lower case through the partition; the accommodating space is composed of the upper case and the partition The sliding space is surrounded by the lower casing and the partition, and the static iron core is fixedly installed on the partition.
  • the static contact assembly and the static yoke are arranged on the side of the moving contact plate away from the push rod assembly; when the push rod assembly pushes the moving yoke toward the static magnet The yoke moves until the moving contact plate is in contact with the static contact assembly, the distance between the moving magnetic yoke and the static magnetic yoke is close or they are in contact with each other, and the high-voltage line connected to the static contact assembly (Here, the high-voltage line refers to the high-voltage line of the high-voltage equipment connected to the relay.)
  • the static contact assembly and the moving contact plate in contact with each other in the relay realize conduction (that is, the relay conduction).
  • the changing magnetic field generated on the moving yoke will generate an induced current on the moving yoke, and it can be known according to Lenz’s law, and the direction of the induced current is the same as the short-circuit current on the moving contact plate.
  • the short-circuit current offset (if there is no isolation space between the moving contact plate and the moving magnetic yoke and they are in direct contact, the short-circuit current of the moving contact plate will offset a part of the induced current on the moving magnetic yoke, thereby weakening the magnetic field strength on the moving yoke, thereby reducing the attraction between the static yoke and the moving yoke), at this time, the short-circuit current on the moving contact plate has an effect on the induction of the moving yoke The influence of the current will be weakened or even eliminated, thereby maintaining the magnetic field strength on the moving magnetic yoke and further improving the short-circuit resistance capability of the relay. Moreover, the relay has a simple structure and is easy to install.
  • FIG. 1 is a cross-sectional view of a relay provided by an embodiment of the present disclosure
  • Fig. 2 is a partial cross-sectional view of a relay provided by an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of an exploded structure of a relay provided by an embodiment of the present disclosure
  • Fig. 4 is a schematic diagram of a partial exploded structure of a relay provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of the induced current on the moving yoke and the short-circuit current on the moving contact plate provided by an embodiment of the present disclosure
  • FIG. 6 is a three-dimensional structural diagram of the induced current and the induced magnetic field on the moving yoke and the short-circuit current on the moving contact plate provided by an embodiment of the present disclosure.
  • Static contact assembly 11. Static contact part; 2. Moving contact plate; 21. Moving contact part; 22. Protruding post; 3. Static yoke; 4. Moving yoke; Part isolation space; 412, bottom isolation space; 42, magnetic suction part; 43, first installation hole; 44, U-shaped groove; 5, push rod assembly; 51, push rod; 52, insulating block; 53, moving iron core ;54, static iron core; 6, mounting bracket; 61, internal space; 62, first opening; 63, second opening; 64, second mounting hole; 65, upper bracket; 651, first clamping part; 66 , the lower bracket; 661, the second clamping part; 7, the elastic member; 8, the shell; 81, the accommodation space; 82, the sliding space; 83, the partition plate; 84, the upper shell; 85, the lower shell.
  • a relay provided by an embodiment of the present disclosure includes a static contact assembly 1, a moving contact plate 2, a static yoke 3, a moving yoke 4, and a push rod assembly 5.
  • the static yoke 3 Set opposite to the moving magnetic yoke 4; the moving contact plate 2 is installed on the moving magnetic yoke 4 at a position opposite to the static contact assembly 1; the moving contact plate 2 and the moving magnetic yoke 4 There is an isolation space 41 between them; it can be understood that in the embodiment shown in FIG.
  • the static contact assembly 1 is located above the moving contact plate 2 and is arranged opposite to the moving contact plate 2; the moving contact plate 2 and the moving magnetic yoke 4 can be separated by air or by insulation components to prevent the induced current on the moving yoke 4 from being offset by the short-circuit current of the moving contact plate 2
  • the static contact assembly 1 and the static yoke 3 are arranged on the side of the moving contact plate 2 away from the push rod assembly 5; the push rod assembly 5 is used to push the moving yoke 4 toward the The static magnetic yoke 3 moves so that the movable contact plate 2 is in contact with the static contact assembly 1 .
  • the first distance between the static yoke 3 and the moving yoke 4 is greater than the second distance between the static contact assembly 1 and the moving contact plate 2 . It can be understood that the first distance is the distance between the lower end surface of the static yoke 3 and the upper end surface of the moving yoke 4; the second distance is the lower end surface of the static contact assembly 1 The distance from the upper end surface of the moving touch panel 2.
  • the first distance is greater than the second distance, so that after the push rod assembly 5 drives the moving yoke 4 to move toward the static yoke 3, the moving contact plate 2 and the static contact assembly 1
  • the static yoke 3 may be in contact with the moving yoke 4, or may not be in contact with the moving yoke 4, so that it can be ensured that the moving yoke 4 is in contact with the static yoke 3
  • the moving contact plate 2 has been in contact with the static contact assembly 1, thereby avoiding that when the moving magnetic yoke 4 is in contact with the static magnetic yoke 3, the moving contact plate 2 has not been in contact with the static contact assembly 1.
  • the static contact assembly 1 includes a first static contact and a second static contact, and the first static contact and the second static contact are respectively connected to positive contacts of high-voltage equipment.
  • Negative two-section high-voltage line; the working principle of the relay is: when the push rod assembly 5 starts to move up under the control of low-voltage electricity, the moving contact plate 2 and the moving yoke 4 will be on the push rod Push the assembly 5 and move up until the moving contact plate 2 is in contact with the first static contact and the second static contact at the same time, so that two sections of high voltage lines pass through the first static contact, The conduction path of the moving contact plate 2 and the second static contact realizes conduction; similarly, when the push rod assembly 5 starts to move down under the control of the low voltage, the moving contact plate 2 and the The moving yoke 4 will move down under the drive of the push rod assembly 5 until the moving contact plate 2 is separated from the first static contact and the second static contact, so that the two The conduction path of the segment high-voltage line is disconnected
  • the static contact assembly 1 and the static yoke 3 are arranged on the side of the moving contact plate 2 away from the push rod assembly 5; when the push rod assembly 5 pushes the moving yoke 4 moves toward the static magnetic yoke 3 until the moving contact plate 2 contacts the static contact assembly 1, the distance between the moving magnetic yoke 4 and the static magnetic yoke 3 is relatively close or they are in contact with each other,
  • the high-voltage line connected to the static contact assembly 1 (here, the high-voltage line refers to the high-voltage line of the high-voltage equipment connected to the relay) realizes conduction through the static contact assembly 1 and the moving contact plate 2 that are in contact with each other in the relay. pass (that is, the relay conducts).
  • the changing magnetic field generated on the moving yoke 4 will generate an induced current on the moving yoke 4, and according to Lenz's law, the induced current
  • the direction of the short-circuit current on the moving contact plate 2 is opposite to that of the short-circuit current; in the present disclosure, an isolation space 41 is provided between the moving contact plate 2 and the moving magnetic yoke 4, so the isolation space 41 will be as far as possible Reduce the induced current on the moving magnetic yoke 4 and offset the short-circuit current of the moving contact plate 2 (if the moving contact plate 2 and the moving magnetic yoke 4 do not have an isolation space 41 and are in direct contact, the moving contact The short-circuit current of the plate 2 will offset a part of the induced current on the moving yoke 4, thereby weakening the magnetic field strength on the moving yoke 4, thereby reducing the connection between the static yoke 3 and the moving yoke 4.
  • the influence of the short-circuit current on the moving contact plate 2 on the induced current on the moving magnetic yoke 4 will be weakened or even eliminated, thereby maintaining the force on the moving magnetic yoke 4
  • the strength of the magnetic field further improves the short-circuit resistance of the relay.
  • the relay has a simple structure and is easy to install.
  • the moving yoke 4 is provided with a U-shaped slot 44 , the moving contact plate 2 is installed in the U-shaped slot 44 , and the isolation space 41 Including a side isolation space 411 and/or a bottom isolation space 412; the side isolation space 411 is arranged between the outer surface of the moving touch panel 2 and the inner side wall of the U-shaped groove 44; the bottom isolation space 412 is arranged Between the bottom end of the moving contact plate 2 and the bottom surface of the U-shaped groove 44 .
  • the opening of the U-shaped groove 44 faces the static contact assembly 1 (that is, the opening of the U-shaped groove 44 faces upward), and the side isolation space 411 includes the U-shaped groove 44 The left isolation space formed between the left inner wall and the left side of the moving touch panel 2, and the right isolation space formed between the right inner wall of the U-shaped groove 44 and the right side of the moving touch panel 2 A bottom isolation space 412 is formed between the groove bottom surface of the U-shaped groove 44 and the bottom end surface of the moving contact plate 2; at this time, the side isolation space 411 and the bottom isolation space 412 are all air Quarantine.
  • the isolation space 41 may be formed by the side isolation space 411, or by the bottom isolation space 412, or by the bottom isolation space 412 and the side isolation space 411. Composition, the structure of the moving magnetic yoke 4 is simple, and the convenience of the installation of the relay is improved.
  • the outer surface of the moving touch plate 2 is provided with a groove, and the groove is recessed toward the middle of the moving touch plate 2, so that the outer surface of the moving touch plate 2 and the U-shaped groove 44
  • the side isolation space 411 can be formed between the inner side walls, and the bottom of the moving touch board 2 is provided with a boss 22, and the moving touch board 2 is installed in the U-shaped groove 44 through the boss, because In the presence of the protrusion, the bottom end of the moving touch plate 2 does not contact the bottom surface of the U-shaped groove 44 , so that there is a gap between the bottom end of the moving touch plate 2 and the bottom surface of the U-shaped groove 44
  • the bottom isolation space 412 is formed between them.
  • the moving yoke 4 is further provided with a first mounting hole 43
  • the moving contact plate 2 is provided with a The moving contact plate 2 is installed on the moving magnetic yoke 4 through the boss 22 inserted into the first mounting hole 43 .
  • the entire moving contact plate 2 is made of metal material.
  • the boss 22 can It plays the role of installing the moving contact plate 2 on the moving magnetic yoke 4, and the moving contact plate 2 has a simple structure and low manufacturing cost.
  • the boss 22 can be made of insulating material.
  • the complete isolation between the moving contact plate 2 and the moving magnetic yoke 4, that is, the moving contact The contact part between the plate 2 and the moving magnetic yoke 4 realizes isolation (that is, the isolation between the boss 22 and the first installation hole 43), and the moving contact plate 2 and the moving magnetic yoke 4
  • the contact portion of the contact part also realizes isolation (that is, isolation is performed by the isolation space 41); Preventing the induced current on the moving yoke 4 from being offset by the short-circuit current of the moving contact plate 2 further improves the short-circuit resistance capability of the relay.
  • the relay further includes an insulating sleeve (not shown) sleeved on the protrusion 22, and the protrusion 22 is plugged into the first installation hole 43 through the insulating sleeve.
  • the insulating sleeve is located between the boss 22 and the inner wall of the first installation hole 43, so that the contact part between the moving contact plate 2 and the moving magnetic yoke 4 is also isolated, Furthermore, the technical effect of complete isolation between the moving contact plate 2 and the moving magnetic yoke 4 is achieved, and the induced current on the moving magnetic yoke 4 is prevented from being offset by the short-circuit current of the moving contact plate 2 to the greatest extent. , to further improve the ability of the relay to resist short circuit.
  • the relay further includes an insulator (not shown) installed in the isolation space 41 , and the insulator is connected between the moving contact plate 2 and the moving yoke 4 .
  • the insulating member is made of insulating materials, including but not limited to insulating rubber, insulating ceramics and the like.
  • the relay further includes a mounting bracket 6 with an internal space 61, and the push rod assembly 5 is connected to the moving magnet through the mounting bracket 6.
  • the yoke 4; the moving yoke 4 and the moving contact plate 2 are installed in the inner space 61; specifically, a receiving groove is formed between the moving yoke 4 and the inner side wall of the inner space 61, The moving contact plate 2 is located in the receiving groove.
  • the mounting bracket 6 is also provided with a first opening 62 and a second opening 63 communicating with the inner space 61; And the magnetic attraction portion 42 oppositely arranged; the movable contact plate 2 includes a movable contact portion 21 protruding from the second opening 63 and oppositely disposed to the static contact assembly 1 . It can be understood that, in the embodiment shown in FIG. 1 , two first openings 62 are provided on the top of the installation bracket 6 , and the second openings 63 are provided on the left and right sides of the installation bracket 6 .
  • the moving yoke 4 is a U-shaped structure with two magnetic parts 42, and the two magnetic parts 42 are located on the upper surface of the U-shaped moving yoke 4, and the static yoke 3 Located above the magnetic attraction portion 42;
  • the moving contact plate 2 is in the shape of a long plate, and the opposite ends of the long plate-shaped moving touch plate 2 in the length direction are respectively provided with a moving contact portion 21,
  • the two moving contact parts 21 are located on the upper surface of the moving contact plate 2, the moving contact parts 21 of the moving contact plate 2 protrude from the second opening 63, and the static contact assembly 1 is located at above the movable contact portion 21 .
  • the push rod assembly 5 drives the moving magnetic yoke 4 up until the moving contact part 21 contacts the static contact assembly 1, and the magnetic attraction part 42 approaches the static magnetic yoke 3 or in contact with the static yoke 3 , and an attractive force is generated between the magnetic attraction part 42 and the static yoke 3 .
  • the design of the mounting bracket 6 improves the compactness of the relay.
  • the push rod assembly 5 is connected to the installation bracket 6, and the moving magnet yoke 4 is installed on the installation bracket 6, and the push rod assembly 5 is connected to the moving magnet yoke 4 through the installation bracket 6 , which simplifies the installation process of the relay.
  • the relay further includes an elastic member 7 installed in the inner space 61, one end of the elastic member 7 is connected to the moving yoke 4 away from the One end of the static yoke 3 and the other end of the elastic member 7 are connected to the push rod assembly 5 .
  • the elastic member 7 includes but is not limited to a spring and the like. Specifically, when the push rod assembly 5 drives the moving contact plate 2 to contact the static contact assembly 1, the static contact assembly 1 will compress the elastic member 7 downward, so that the elastic member The compressive elastic force of 7 will keep the moving contact plate 2 always in contact with the static contact assembly 1, which improves the stability of the relay. Moreover, the elastic member 7 can also buffer the contact force between the moving contact plate 2 and the static contact assembly 1 , thereby prolonging the service life of the relay.
  • the mounting bracket 6 is provided with a second mounting hole 64 communicating with the internal space 61
  • the push rod assembly 5 includes a push rod 51 and a The insulating block 52 in the second installation hole 64 , the pushing rod 51 is connected to the elastic member 7 through the insulating block 52 .
  • the second mounting hole 64 is located at the bottom of the mounting bracket 6, the insulating block 52 is installed in the second mounting hole 64, and the upper and lower ends of the insulating block 52 are respectively connected to the The elastic member 7 and the pushing rod 51, the insulating block 52 makes the insulating connection between the pushing rod 51 and the mounting bracket 6 and the elastic member 7, avoiding the current on the moving contact plate 2 The transmission is transmitted to the push rod 51 through the elastic member 7 and/or the mounting bracket 6, thereby causing damage to the low-voltage circuit of the relay.
  • the insulating block 52 is installed on the bottom of the installation bracket 6, and the moving contact plate 2 and the moving magnetic yoke 4 are installed on the top of the installation bracket 6, thereby increasing the 2 and the insulating block 52, thereby reducing the temperature rise when the moving contact plate 2 is short-circuited, because the damage of the insulating block 52 caused by excessive temperature further improves the short-circuit resistance of the relay Ability.
  • the mounting bracket 6 includes an upper bracket 65 and a lower bracket 66; Two clamping parts 661, the upper bracket 65 is connected to the lower bracket 66 through the second clamping part 661 and the first clamping part 651, and the first opening 62 is arranged on the upper bracket 65 , the second opening 63 is disposed on the upper bracket 65 or/and the lower bracket 66 . It can be understood that the second opening 63 can be arranged on the upper bracket 65, or on the lower bracket 66, or both on the upper bracket 65 and the lower bracket 66; Two mounting holes 64 are provided on the lower bracket 66, and both the upper bracket 65 and the lower bracket 66 are U-shaped.
  • the first clamping part 651 is a clamping arm
  • the second clamping part 661 is a clamping groove
  • the upper bracket 65 is clamped in the clamping groove.
  • the locking arm is connected to the lower bracket 66 .
  • the first clamping portion 651 is a clamping groove
  • the second clamping portion 661 is a clamping arm
  • the upper bracket 65 is clamped in the clamping groove
  • the clamping arm of the rod is connected to the lower bracket 66 (or the upper bracket 65 and the lower bracket 66 of the rod can be fixed by other connection methods).
  • the upper bracket 65 is connected to the lower bracket 66 through the second clamping portion 661 and the first clamping portion 651, which improves the convenience of disassembling and assembling the mounting bracket 6 and reduces the The manufacturing cost of the relay.
  • the relay further includes a casing 8 provided with an accommodation space 81, the static contact assembly 1 is mounted on the casing 8, and the static contact assembly 1 includes an extension The static contact part 11 that enters the accommodating space 81 and is arranged opposite to the moving contact part 21; the static yoke 3 is installed on the inner side wall of the accommodating space 81 at a position opposite to the magnetic attraction part 42; Both the moving contact plate 2 and the moving yoke 4 are located in the accommodating space 81 .
  • one end of the static contact assembly 1 extends out of the accommodation space 81 , and the other end of the static contact assembly 1 (that is, the static contact portion 11 ) is located in the accommodation space 81 ;
  • the static yoke 3 is installed on the upper inner wall of the accommodating space 81 ;
  • the mounting bracket 6 is also located in the accommodating space 81 .
  • the housing 8 is set so that the moving contact plate 2, the moving magnetic yoke 4 and the static magnetic yoke 3 are all located in the accommodation space 81, thus avoiding the impact of the external environment on the The interference of the moving contact plate 2, the moving yoke 4 and the static yoke 3 prolongs the service life of the relay.
  • the push rod assembly 5 includes a push rod 51, a moving iron core 53 and a static iron core 54 provided with a through hole; the static iron core 54 is fixedly installed (connected by screws , bonding, welding, interference connection, etc.) on the housing 8, the housing 8 is also provided with a sliding space 82, and the sliding space 82 communicates with the accommodating space 81 through the through hole; And the sliding space 82 is located below the accommodating space 81 .
  • the moving iron core 53 is slidably installed in the sliding space 82, one end of the pushing rod 51 is connected to the moving yoke 4, and the other end of the pushing rod 51 is fixedly connected to the moving yoke 4 through the through hole. Core 53.
  • the moving iron core 53 and the static iron core 54 when both the moving iron core 53 and the static iron core 54 are energized (both the moving iron core 53 and the static iron core 54 are connected to low voltage), the moving iron core 53 and the static iron core 54 A magnetic force will be generated between them (the magnetic force can be a repulsive force or an attractive force, and then the pushing rod 51 can be pushed up according to the above-mentioned attractive force or driven down according to the above-mentioned repulsive force), and the static iron core 54 is fixed On the housing 8, the magnetic force will drive the moving iron core 53 to move, and the moving moving iron core 53 will drive the push rod 51 to move up or down, thereby realizing the drive of the push rod assembly 5.
  • the push rod assembly 5 has simple structure, convenient control and high safety.
  • the housing 8 includes a partition 83 , an upper case 84 and a lower case 85 ; the upper case 84 is connected to the lower case 85 through the partition 83
  • the accommodating space 81 is surrounded by the upper casing 84 and the partition 83; the sliding space 82 is surrounded by the lower casing 85 and the partition 83, and the static iron core 54 is fixed Installed on the partition 83.
  • the upper end of the housing 8 is provided with the accommodation space 81, and the lower end of the housing 8 is provided with the sliding space 82; the moving iron core 53 and the moving iron core 53 are installed on the In the sliding space 82, the static contact assembly 1, the moving contact plate 2, the static yoke 3, the moving yoke 4, and the elastic member 7 are all located in the accommodation space 81, and the The partition plate 83 and the static iron core 54 separate the accommodating space 81 from the accommodating space 81, thereby avoiding the mutual interference between the components in the accommodating space 81 and the components in the sliding space 82 , making the working process of the relay more stable and prolonging the service life of the relay.

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

Abstract

一种继电器，包括静触头组件（1）、动触板（2）、静磁轭（3）、动磁轭（4）以及推杆组件（5），所述静磁轭和所述动磁轭相对设置；所述动触板安装在所述动磁轭上与所述静触头组件相对的位置；所述动触板与所述动磁轭之间设有隔离空间（41）；所述静触头组件和所述静磁轭设置在所述动触板背离所述推杆组件的一侧；所述推杆组件用于推动所述动磁轭朝向所述静磁轭移动以使得所述动触板与所述静触头组件接触。该继电器具有较强的抗短路的能力，避免了拉弧现象。

Description

一种继电器
本公开要求于2021年06月30日提交中国专利局，申请号为202121489467.9，申请名称为“一种继电器”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本公开属于继电器技术领域，特别是涉及一种继电器。
背景技术
继电器被广泛应用于高压设备中，且继电器的抗短路能力是用于评价其质量的一个重要指标。现有技术中，在继电器连接的高压设备发生短路时，短路电流将流过继电器的动触头和静触头，从而使得动触头和静触头之间产生较大的斥力，将动触头和静触头分隔开，最终导致产生剧烈的拉弧现象，使得继电器失效，因此，现有技术中的继电器存在抗短路能力弱的问题。
发明内容
本公开针对现有技术中继电器存在抗短路能力弱的技术问题，提供了一种继电器。
鉴于以上技术问题，本公开实施例提供一种继电器包括静触头组件、动触板、静磁轭、动磁轭以及推杆组件，所述静磁轭和所述动磁轭相对设置；所述动触板安装在所述动磁轭上与所述静触头组件相对的位置；所述动触板 与所述动磁轭之间设有隔离空间；
所述静触头组件和所述静磁轭设置在所述动触板背离所述推杆组件的一侧；所述推杆组件用于推动所述动磁轭朝向所述静磁轭移动以使得所述动触板与所述静触头组件接触。
可选地，所述动磁轭上设有U形槽，所述动触板安装在所述U形槽中，所述隔离空间包括侧部隔离空间和/或底部隔离空间；所述侧部隔离空间设置在所述动触板的外侧面与U形槽的内侧壁之间；所述底部隔离空间设置在所述动触板的底端与所述U形槽的槽底面之间。
可选地，所述动磁轭上还设有连通所述第一开口的第一安装孔，所述动触板上设有与所述第一安装孔适配的凸柱，所述动触板通过插入所述第一安装孔中的所述凸柱安装在所述动磁轭上。
可选地，所述继电器还包括套接在所述凸柱上的绝缘套，所述凸柱通过所述绝缘套插接在所述第一安装孔中。
可选地，所述继电器还包括安装在所述隔离空间中的绝缘件，所述绝缘件连接在所述动触板与所述动磁轭之间。
可选地，所述继电器还包括设有内部空间的安装支架，所述推杆组件连接所述安装支架；所述动磁轭和所述动触板安装在所述内部空间中；
所述安装支架上还设有与所述内部空间连通的第一开口和第二开口；所述动磁轭包括自所述第一开口伸出且与所述静磁轭相对设置的磁吸部；所述动触板包括自所述第二开口伸出相与所述静触头组件对设置且的动接触部。
可选地，所述继电器还包括安装在所述内部空间中的弹性件，所述弹性件的一端连接所述动磁轭背离所述静磁轭的一端，所述弹性件的另一端连接所述推杆组件。
可选地，所述安装支架上设有连通所述内部空间的第二安装孔，所述推杆组件包括推动杆以及安装在第二安装孔中的绝缘块，所述推动杆通过所述绝缘块连接所述弹性件。
可选地，所述安装支架包括上支架和下支架；所述上支架上设有第一卡接部，所述下支架上设有第二卡接部，所述上支架通过所述第二卡接部中的所述第一卡接部连接所述下支架，所述第一开口设置在所述上支架上，所述第二开口设置在所述上支架或/和所述下支架上。
可选地，所述继电器还包括设有容纳空间的外壳，所述静触头组件安装在所述外壳上，所述静触头组件包括伸入所述容纳空间且与所述动接触部相对设置的静接触部；所述静磁轭安装在所述容纳空间的内侧壁上与所述磁吸部相对的位置；所述动触板以及动磁轭均位于所述容纳空间中。
可选地，所述推杆组件包括推动杆、动铁芯以及设有通孔的静铁芯；所述静铁芯固定安装在所述外壳上，所述外壳上还设有滑动空间，所述滑动空间通过所述通孔连通所述容纳空间；
所述动铁芯滑动安装在所述滑动空间中，所述推动杆的一端连接所述动磁轭，所述推动杆的另一端穿过所述通孔与所述动铁芯固定连接。
可选地，所述外壳包括隔板、上壳体以及下壳体；所述上壳体通过所述隔板连接所述下壳体；所述容纳空间由所述上壳体与所述隔板围成；所述滑动空间由所述下壳体与所述隔板围成，所述静铁芯固定安装在所述隔板上。
本公开中，所述静触头组件和所述静磁轭设置在所述动触板背离所述推杆组件的一侧；当所述推杆组件推动所述动磁轭朝向所述静磁轭移动，直至所述动触板与所述静触头组件接触时，所述动磁轭和所述静磁轭之间距离较近或彼此接触，且所述静触头组件上连接的高压线(此处，高压线是指继电器所连接的高压设备的高压线)通过继电器中相互接触的所述静触头组件与所述动触板实现导通(也即继电器导通)。此时，若高压线发生短路，所述动触板和所述静触头组件上的短路电流将急剧增大，急剧增大的短路电流将在所述动触板和所述静触头组件之间产生斥力(霍姆力)；但同时，所述动触板上增大的短路电流会使得所述动磁轭上产生一个变化的磁场，该变化的磁场将对所述静磁轭产生吸力，该吸力将阻止所述动触板和所述静触头组件 之间因上述斥力存在而发生分离，因此，避免了因为动触板和所述静触头组件之间分离而产生拉弧现象，从而导致继电器失效，提高了该继电器的抗短路的能力。
进一步地，根据电磁感应定律可知，动磁轭上产生的变化的磁场会在所述动磁轭上产生感应电流，根据楞次定律可知，且感应电流的方向与所述动触板上短路电流的方向相反；在本公开中，所述动触板与所述动磁轭之间设有隔离空间，因此隔离空间将尽可能减少所述动磁轭上的感应电流被所述动触板的短路电流抵消(若所述动触板与所述动磁轭不存在隔离空间而直接接触，所述动触板的短路电流将抵消掉一部分所述动磁轭上的感应电流，从而减弱了所述动磁轭上的磁场强度，进而降低了所述静磁轭与所述动磁轭之间的吸力)，此时，所述动触板上的短路电流对所述动磁轭上的感应电流的影响将被减弱甚至被消除，从而维持了所述动磁轭上的磁场强度，进一步提高了该继电器的抗短路的能力。并且，该继电器的结构简单，安装方便。
附图说明
下面结合附图和实施例对本公开进一步说明。
图1是本公开一实施例提供的继电器的剖视图；
图2是本公开一实施例提供的继电器的部分剖视图；
图3是本公开一实施例提供的继电器的爆炸结构示意图；
图4是本公开一实施例提供的继电器的部分爆炸结构示意图；
图5是本公开一实施例提供的动磁轭上感应电流，和动触板上短路电流的示意图；
图6是本公开一实施例提供的动磁轭上感应电流和感应磁场，以及动触板上短路电流的立体结构示意图。
说明书中的附图标记如下：
1、静触头组件；11、静接触部；2、动触板；21、动接触部；22、凸柱；3、静磁轭；4、动磁轭；41、隔离空间；411、侧部隔离空间；412、底部隔离空间；42、磁吸部；43、第一安装孔；44、U形槽；5、推杆组件；51、推动杆；52、绝缘块；53、动铁芯；54、静铁芯；6、安装支架；61、内部空间；62、第一开口；63、第二开口；64、第二安装孔；65、上支架；651、第一卡接部；66、下支架；661、第二卡接部；7、弹性件；8、外壳；81、容纳空间；82、滑动空间；83、隔板；84、上壳体；85、下壳体。
具体实施方式
为了使本公开所解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本公开进行进一步的详细说明。应当理解，此处所描述的具体实施例仅用以解释本公开，并不用于限定本公开。
需要理解的是，术语“上”、“下”、“左”、“右”、“前”、“后”、“中部”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为本公开的限制。
如图1所示，本公开一实施例提供的一种继电器，包括静触头组件1、动触板2、静磁轭3、动磁轭4以及推杆组件5，所述静磁轭3和所述动磁轭4相对设置；所述动触板2安装在所述动磁轭4上与所述静触头组件1相对的位置；所述动触板2与所述动磁轭4之间设有隔离空间41；可以理解地，在图1中所示的实施例中，所述静磁轭3位于所述动磁轭4的上方并与所述动磁轭4相对设置，所述静触头组件1位于所述动触板2的上方并与所述动触板2相对设置；所述动触板2与所述动磁轭4之间可以通过空气隔离，也可以通过绝缘件进行隔离，以避免所述动磁轭4上的感应电流被所述动触板2 的短路电流抵消
所述静触头组件1和所述静磁轭3设置在所述动触板2背离所述推杆组件5的一侧；所述推杆组件5用于推动所述动磁轭4朝向所述静磁轭3移动以使得所述动触板2与所述静触头组件1接触。在一可选实施例中，所述静磁轭3和所述动磁轭4之间的第一距离大于所述静触头组件1与所述动触板2之间的第二距离。可以理解地，所述第一距离为所述静磁轭3的下端面与所述动磁轭4的上端面之间的距离；所述第二距离为所述静触头组件1的下端面与所述动触板2的上端面之间的距离。所述第一距离大于所述第二距离，从而使得所述推杆组件5带动所述动磁轭4朝向所述静磁轭3移动之后，在动触板2与所述静触头组件1接触时，所述静磁轭3可以与所述动磁轭4接触，也可以不与所述动磁轭4接触，如此，能够保证在所述动磁轭4与所述静磁轭3接触的同时或之前，所述动触板2与所述静触头组件1已经接触，进而避免了所述动磁轭4与所述静磁轭3接触时，所述动触板2尚未与所述静触头组件1接触的风险(也即，若动磁轭4与所述静磁轭3接触时，所述动触板2尚未与所述静触头组件1接触，此时继电器不能实现静触头组件1的两段高压线的导通，继电器将不具备其作为开关的基本功能)，提高了该继电器的实用性。
具体地，在一实施例中，所述静触头组件1包括第一静触头和第二静触头，所述第一静触头和所述第二静触头分别连接高压设备的正负极两段高压线；该继电器的工作原理为：当所述推杆组件5在低压电的控制下开始上移时，所述动触板2和所述动磁轭4将在所述推杆组件5的推动下一并上移，直至所述动触板2同时与所述第一静触头以及所述第二静触头接触，从而使得两段高压线通过所述第一静触头、所述动触板2以及所述第二静触头的导通路径实现导通；同理，当所述推杆组件5在低压电的控制下开始下移时，所述动触板2和所述动磁轭4将在所述推杆组件5的带动下一并下移，直至所述动触板2与所述第一静触头以及所述第二静触头分离，从而使得两段高 压线的导通路径断开，进而实现了通过继电器断开两端高压线之间的导通。
本公开中，所述静触头组件1和所述静磁轭3设置在所述动触板2背离所述推杆组件5的一侧；当所述推杆组件5推动所述动磁轭4朝向所述静磁轭3移动，直至所述动触板2与所述静触头组件1接触时，所述动磁轭4和所述静磁轭3之间距离较近或彼此接触，且所述静触头组件1上连接的高压线(此处，高压线是指继电器所连接的高压设备的高压线)通过继电器中相互接触的所述静触头组件1与所述动触板2实现导通(也即继电器导通)。此时，若高压线发生短路，所述动触板2和所述静触头组件1上的短路电流将急剧增大，急剧增大的短路电流将在所述动触板2和所述静触头组件1之间产生斥力(霍姆力)；但同时，所述动触板2上增大的短路电流使得在所述动磁轭4上产生一个变化的磁场，该变化的磁场将对所述静磁轭3产生吸力，该吸力将阻止所述动触板2和所述静触头组件1之间因上述斥力存在而发生分离，因此，避免了因为动触板2和所述静触头组件1之间分离而产生拉弧现象，从而导致继电器失效，提高了该继电器的抗短路的能力。
进一步地，如图5和图6所示，根据电磁感应定律可知，动磁轭4上产生的变化的磁场会在所述动磁轭4上产生感应电流，根据楞次定律可知，该感应电流的方向与所述动触板2上短路电流的方向相反；本公开中，所述动触板2与所述动磁轭4之间设有隔离空间41，因此所述隔离空间41将尽可能减少所述动磁轭4上的感应电流被所述动触板2的短路电流抵消(若所述动触板2与所述动磁轭4不存在隔离空间41而直接接触，所述动触板2的短路电流将抵消掉一部分所述动磁轭4上的感应电流，从而减弱了所述动磁轭4上的磁场强度，进而降低了所述静磁轭3与所述动磁轭4之间的吸力)，此时，所述动触板2上的短路电流对所述动磁轭4上的感应电流的影响将被减弱甚至被消除，从而维持了所述动磁轭4上的磁场强度，进一步提高了该继电器的抗短路的能力。并且，该继电器的结构简单，安装方便。
在一实施例中，如图2和图4所示，所述动磁轭4上设有U形槽44，所 述动触板2安装在所述U形槽44中，所述隔离空间41包括侧部隔离空间411和/或底部隔离空间412；所述侧部隔离空间411设置在所述动触板2的外侧面与U形槽44的内侧壁之间；所述底部隔离空间412设置在所述动触板2的底端与所述U形槽44的槽底面之间。可以理解地，所述U形槽44的开口朝向所述静触头组件1(也即，所述U形槽44的开口朝向上方)，所述侧部隔离空间411包括所述U形槽44左侧内壁与所述动触板2左侧面之间形成的左侧隔离空间，以及所述U形槽44右侧内壁与所述动触板2右侧面之间形成的右侧隔离空间；所述U形槽44的槽底面与所述动触板2的底端表面之间形成底部隔离空间412；此时，所述侧部隔离空间411和所述底部隔离空间412均是通过空气进行隔离。本实施例中，所述隔离空间41可以由所述侧部隔离空间411构成，也可以由所述底部隔离空间412构成，还可以由所述底部隔离空间412和所述侧部隔离空间411共同构成，该动磁轭4的结构简单，且提高了该继电器安装的便捷性。
在一具体实施例中，所述动触板2的外侧面设有凹槽，所述凹槽向动触板2的中部凹陷，从而所述动触板2的外侧面与U形槽44的内侧壁之间可以形成所述侧部隔离空间411，所述动触板2的底部设有凸柱22，所述动触板2通过所述凸柱安装在所述U形槽44中，由于所述凸出的存在，所述动触板2的底端不与所述U形槽44的槽底面接触，从而所述动触板2的底端与所述U形槽44的槽底面之间形成所述底部隔离空间412。
在一实施例中，如图2和图4所示，所述动磁轭4上还设有第一安装孔43，所述动触板2上设有与所述第一安装孔43适配的凸柱22，所述动触板2通过插入所述第一安装孔43的所述凸柱22安装在所述动磁轭4上。在一可选实施例中，整个所述动触板2均为金属材料制成，此时，所述动触板2与所述动磁轭4之间除了所述凸柱22与所述第一安装孔43的接触部分没有被隔离外，所述动触板2与所述动磁轭4之间的其余部分均为所述隔离空间41；在本实施例中，所述凸柱22可以起到将所述动触板2安装在所述动磁轭4上 的作用，且该动触板2的结构简单，制造成本低。在另一可选实施例中，所述凸柱22可以为绝缘材料制成，此时，所述动触板2和所述动磁轭4之间的完全隔离，也即，所述动触板2和所述动磁轭4的接触部分实现了隔离(也即所述凸柱22与所述第一安装孔43之间的隔离)，所述动触板2和所述动磁轭4的接触部也实现了隔离(也即，通过所述隔离空间41进行隔离)；在本实施例中，所述动触板2和所述动磁轭4之间的完全隔离，从而最大程度的避免所述动磁轭4上的感应电流被所述动触板2的短路电流抵消，进一步提高了该继电器的抗短路的能力。
在一实施例中，所述继电器还包括套接在所述凸柱22上的绝缘套(图未示)，所述凸柱22通过所述绝缘套插接在所述第一安装孔43中。可以理解地，所述绝缘套位于所述凸柱22和所述第一安装孔43的内壁之间，从而使得所述动触板2与所述动磁轭4的接触部分也实现了隔离，进而使得所述动触板2和所述动磁轭4之间实现了完全隔离的技术效果，最大程度的避免所述动磁轭4上的感应电流被所述动触板2的短路电流抵消，进一步提高了该继电器的抗短路的能力。
在一实施例中，所述继电器还包括安装在所述隔离空间41中的绝缘件(图未示)，所述绝缘件连接在所述动触板2与所述动磁轭4之间。可以理解地，绝缘件由绝缘材料制成，所述绝缘件包括但不限于由绝缘橡胶、绝缘陶瓷等制成。
在一实施例中，如图1、图2以及图4所示，所述继电器还包括设有内部空间61的安装支架6，所述推杆组件5通过所述安装支架6连接所述动磁轭4；所述动磁轭4和所述动触板2安装在所述内部空间61中；具体地，所述动磁轭4和所述内部空间61的上内侧壁之间形成容纳槽，所述动触板2位于所述容纳槽中。
所述安装支架6上还设有与所述内部空间61连通的第一开口62和第二开口63；所述动磁轭4包括与所述静磁轭3自所述第一开口62伸出且相对设 置的磁吸部42；所述动触板2包括自所述第二开口63伸出且与所述静触头组件1相对设置的动接触部21。可以理解地，在图1所示的实施例中，所述安装支架6的顶部设有两个所述第一开口62，所述安装支架6的左右两侧均设有所述第二开口63，所述动磁轭4为一个具有两个磁吸部42的U形结构件，两个所述磁吸部42位于U形的所述动磁轭4的上表面，所述静磁轭3位于所述磁吸部42的上方；所述动触板2为长板状，长板状的所述动触板2的长度方向上的相对两端分别设有一个所述动接触部21，且两个所述动接触部21均位于所述动触板2的上表面，所述动触板2的动接触部21自所述第二开口63伸出，所述静触头组件1位于所述动接触部21的上方。本实施例中，所述推杆组件5带动所述动磁轭4上升，直至所述动接触部21与所述静触头组件1接触时，所述磁吸部42靠近所述静磁轭3或者与静磁轭3接触，且所述磁吸部42与所述静磁轭3之间产生吸力。本实施例中，所述安装支架6的设计，提高了该继电器的紧凑性。
另外，所述推杆组件5连接所述安装支架6，而所述动磁轭4安装在所述安装支架6上，所述推杆组件5通过所述安装支架6连接所述动磁轭4，简化了该继电器的安装工序。
在一实施例中，如图1和图2所示，所述继电器还包括安装在所述内部空间61中的弹性件7，所述弹性件7的一端连接所述动磁轭4背离所述静磁轭3的一端，所述弹性件7的另一端连接所述推杆组件5。可以理解地，所述弹性件7包括但不限于为弹簧等。具体地，当所述推杆组件5带动所述动触板2与所述静触头组件1接触时，所述静触头组件1将向下压缩所述弹性件7，从而所述弹性件7的压缩弹力将使得所述动触板2保持在与所述静触头组件1始终处于接触状态，提高了该继电器的稳定性。并且，所述弹性件7还可以起到对所述动触板2与所述静触头组件1之间的接触力进行缓冲的作用，从而延长了该继电器的使用寿命。
在一实施例中，如图1和图2所示，所述安装支架6上设有连通所述内 部空间61的第二安装孔64，所述推杆组件5包括推动杆51以及安装在第二安装孔64中的绝缘块52，所述推动杆51通过所述绝缘块52连接所述弹性件7。可以理解地，所述第二安装孔64位于所述安装支架6的底部，所述绝缘块52安装在所述第二安装孔64中，且所述绝缘块52的上下两端分别连接所述弹性件7和所述推动杆51，所述绝缘块52使得所述推动杆51与所述安装支架6以及所述弹性件7之间均绝缘连接，避免了所述动触板2上的电流通过所述弹性件7和/或所述安装支架6传递至所述推动杆51，进而对继电器低压电路造成损害。
进一步地，所述绝缘块52安装在所述安装支架6的底部，所述动触板2和所述动磁轭4安装在所述安装支架6的顶部，从而增大了所述动触板2与所述绝缘块52之间的距离，进而减轻了所述动触板2短路时温度升高，因为过高温度所导致的所述绝缘块52的损坏，进一步提高了该继电器的抗短路的能力。
在一实施例中，如图3所示，所述安装支架6包括上支架65和下支架66；所述上支架65上设有第一卡接部651，所述下支架66上设有第二卡接部661，所述上支架65通过所述第二卡接部661和所述第一卡接部651连接所述下支架66，所述第一开口62设置在所述上支架65上，所述第二开口63设置在所述上支架65或/和所述下支架66上。可以理解地，所述第二开口63可以设置在所述上支架65上，也可以设置在所述下支架66上，还可以在上支架65和所述下支架66上均设置；所述第二安装孔64设置在所述下支架66上，且所述上支架65和所述下支架66均为U形结构。在一可选实施例中，所述第一卡接部651为卡接臂，所述第二卡接部661为卡接槽，所述上支架65通过卡接在所述卡接槽中的卡接臂连接所述下支架66。在另一可选实施例中，所述第一卡接部651为卡接槽，所述第二卡接部661为卡接臂，所述上支架65通过卡接在所述卡接槽中的卡接臂连接所述下支架66(或者通过其他连接方式固定杆上支架65以及下支架66亦可)。本实施例中，所述上支架65通过所 述第二卡接部661和所述第一卡接部651连接所述下支架66，提高了该安装支架6拆装的便捷性，且降低了该继电器的制造成本。
在一实施例中，如图1所示，所述继电器还包括设有容纳空间81的外壳8，所述静触头组件1安装在所述外壳8上，所述静触头组件1包括伸入所述容纳空间81且与所述动接触部21相对设置的静接触部11；所述静磁轭3安装在所述容纳空间81的内侧壁上与所述磁吸部42相对的位置；所述动触板2以及动磁轭4均位于所述容纳空间81中。可以理解地，所述静触头组件1一端伸出所述容纳空间81，所述静触头组件1的另一端(也即，所述静接触部11)位于所述容纳空间81中；而所述静磁轭3安装在所述容纳空间81的上方的内侧壁上；所述安装支架6也位于所述容纳空间81中。本实施例中，所述外壳8的设置，使得所述动触板2、所述动磁轭4以及所述静磁轭3均位于所述容纳空间81中，从而避免了外界环境对所述动触板2、所述动磁轭4以及所述静磁轭3的干扰，延长了该继电器的使用寿命。
在一实施例中，如图1所示，所述推杆组件5包括推动杆51、动铁芯53以及设有通孔的静铁芯54；所述静铁芯54固定安装(通过螺钉连接、粘接、焊接、过盈连接等方式固定安装)在所述外壳8上，所述外壳8上还设有滑动空间82，所述滑动空间82通过所述通孔连通所述容纳空间81；且所述滑动空间82位于所述容纳空间81的下方。
所述动铁芯53滑动安装在所述滑动空间82中，所述推动杆51的一端连接所述动磁轭4，所述推动杆51的另一端穿过所述通孔固定连接所述动铁芯53。可以理解地，当所述动铁芯53和所述静铁芯54均通电(动铁芯53和静铁芯54均连通低压电)时，所述动铁芯53和所述静铁芯54之间将产生磁力(该磁力可以为排斥力或吸引力，进而可以根据上述吸引力推动推动杆51上移或者根据上述排斥力带动推动杆51下移)，而所述静铁芯54是固定在所述外壳8上，故磁力将带动所述动铁芯53移动，移动的所述动铁芯53将带动所述推动杆51上移或下移，进而实现了所述推杆组件5带动所述动磁轭4 朝向或远离所述静磁轭3移动的技术效果。本实施例中，所述推杆组件5的结构简单，控制方便，安全性高。
在一实施例中，如图1所示，所述外壳8包括隔板83、上壳体84以及下壳体85；所述上壳体84通过所述隔板83连接所述下壳体85；所述容纳空间81由所述上壳体84与所述隔板83围成；所述滑动空间82由所述下壳体85与所述隔板83围成，所述静铁芯54固定安装在所述隔板83上。可以理解地，所述外壳8的上端设有所述容纳空间81，所述外壳8的下端设有所述滑动空间82；所述动铁芯53和所述动铁芯53均安装在所述滑动空间82中，所述静触头组件1、所述动触板2、所述静磁轭3、所述动磁轭4以及所述弹性件7均位于所述容纳空间81中，而所述隔板83和所述静铁芯54将所述容纳空间81和所述容纳空间81隔开，从而避免了所述容纳空间81中的各组件与所述滑动空间82中各组件的相互干扰，使得继电器的工作过程更为稳定，也延长了该继电器的使用寿命。
以上仅为本公开的继电器的实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本公开的保护范围之内。

Claims (12)

  1. 一种继电器，其特征在于，包括静触头组件、动触板、静磁轭、动磁轭以及推杆组件，所述静磁轭和所述动磁轭相对设置；所述动触板安装在所述动磁轭上与所述静触头组件相对的位置；所述动触板与所述动磁轭之间设有隔离空间；
    所述静触头组件和所述静磁轭设置在所述动触板背离所述推杆组件的一侧；所述推杆组件用于推动所述动磁轭朝向所述静磁轭移动以使得所述动触板与所述静触头组件接触。
  2. 根据权利要求1所述的继电器，其特征在于，所述动磁轭上设有U形槽，所述动触板安装在所述U形槽中，所述隔离空间包括侧部隔离空间和/或底部隔离空间；所述侧部隔离空间设置在所述动触板的外侧面与U形槽的内侧壁之间；所述底部隔离空间设置在所述动触板的底端与所述U形槽的槽底面之间。
  3. 根据权利要求1或2所述的继电器，其特征在于，所述动磁轭上还设有第一安装孔，所述动触板上设有与所述第一安装孔适配的凸柱，所述动触板通过插入所述第一安装孔中的所述凸柱安装在所述动磁轭上。
  4. 根据权利要求1-3任一项所述的继电器，其特征在于，所述继电器还包括套接在所述凸柱上的绝缘套，所述凸柱通过所述绝缘套插接在所述第一安装孔中。
  5. 根据权利要求1-4任一项所述的继电器，其特征在于，所述继电器还包括安装在所述隔离空间中的绝缘件，所述绝缘件连接在所述动触板与所述动 磁轭之间。
  6. 根据权利要求1-5任一项所述的继电器，其特征在于，所述继电器还包括设有内部空间的安装支架，所述推杆组件连接所述安装支架；所述动磁轭和所述动触板安装在所述内部空间中；
    所述安装支架上还设有与所述内部空间连通的第一开口和第二开口；所述动磁轭包括自所述第一开口伸出且与所述静磁轭相对设置的磁吸部；所述动触板包括自所述第二开口伸出且与所述静触头组件相对设置的动接触部。
  7. 根据权利要求1-6任一项所述的继电器，其特征在于，所述继电器还包括安装在所述内部空间中的弹性件，所述弹性件的一端连接所述动磁轭背离所述静磁轭的一端，所述弹性件的另一端连接所述推杆组件。
  8. 根据权利要求1-7任一项所述的继电器，其特征在于，所述安装支架上设有连通所述内部空间的第二安装孔，所述推杆组件包括推动杆以及安装在第二安装孔中的绝缘块，所述推动杆通过所述绝缘块连接所述弹性件。
  9. 根据权利要求1-8任一项所述的继电器，其特征在于，所述安装支架包括上支架和下支架；所述上支架上设有第一卡接部，所述下支架上设有第二卡接部，所述上支架通过所述第二卡接部和所述第一卡接部连接所述下支架，所述第一开口设置在所述上支架上，所述第二开口设置在所述上支架或/和所述下支架上。
  10. 根据权利要求1-9任一项所述的继电器，其特征在于，所述继电器还包括设有容纳空间的外壳，所述静触头组件安装在所述外壳上，所述静触头组件包括伸入所述容纳空间且与所述动接触部相对设置的静接触部；所述静磁轭安装在所述容纳空间的内侧壁上与所述磁吸部相对的位置；所述动触板 以及动磁轭均位于所述容纳空间中。
  11. 根据权利要求1-10任一项所述的继电器，其特征在于，所述推杆组件包括推动杆、动铁芯以及设有通孔的静铁芯；所述静铁芯固定安装在所述外壳上，所述外壳上还设有滑动空间，所述滑动空间通过所述通孔连通所述容纳空间；
    所述动铁芯滑动安装在所述滑动空间中，所述推动杆的一端连接所述动磁轭，所述推动杆的另一端穿过所述通孔与所述动铁芯固定连接。
  12. 根据权利要求1-11任一项所述的继电器，其特征在于，所述外壳包括隔板、上壳体以及下壳体；所述上壳体通过所述隔板连接所述下壳体；所述容纳空间由所述上壳体与所述隔板围成；所述滑动空间由所述下壳体与所述隔板围成，所述静铁芯固定安装在所述隔板上。
PCT/CN2022/080406 2021-06-30 2022-03-11 一种继电器 Ceased WO2023273409A1 (zh)

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