WO2017206653A1 - 继电器 - Google Patents

继电器 Download PDF

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Publication number
WO2017206653A1
WO2017206653A1 PCT/CN2017/082905 CN2017082905W WO2017206653A1 WO 2017206653 A1 WO2017206653 A1 WO 2017206653A1 CN 2017082905 W CN2017082905 W CN 2017082905W WO 2017206653 A1 WO2017206653 A1 WO 2017206653A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuse
bottom plate
relay
insulating ring
ring
Prior art date
Application number
PCT/CN2017/082905
Other languages
English (en)
French (fr)
Inventor
黄彩丽
姚保同
汪鲁建
刘斯源
Original Assignee
比亚迪股份有限公司
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 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Priority to US16/303,621 priority Critical patent/US11056305B2/en
Priority to EP17805598.4A priority patent/EP3454354A4/en
Priority to JP2018562346A priority patent/JP2019517715A/ja
Priority to KR1020187033653A priority patent/KR20180132920A/ko
Publication of WO2017206653A1 publication Critical patent/WO2017206653A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/021—Bases; Casings; Covers structurally combining a relay and an electronic component, e.g. varistor, RC circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/14—Terminal arrangements
    • 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
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • 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
    • H01H9/10—Adaptation for built-in fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • H01H2050/025—Details concerning sealing, e.g. sealing casing with resin containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction
    • 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
    • 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 relates to the field of electrical equipment, and in particular to a relay.
  • a short circuit may occur during the use of the appliance.
  • the relay has no overload protection device. When the relay is turned on, once the load current is too large or the circuit is short-circuited, it is easy to cause sintering, which causes the product to lose its function and cause danger.
  • the above relay does not have an arc extinguishing device, and the arcing time is long, and the product has a short service life.
  • the present disclosure aims to solve at least one of the technical problems in the related art to some extent. To this end, it is an object of the present disclosure to provide a relay that reduces or avoids a safety hazard due to current overload or short circuit.
  • a relay includes: a casing having at least one static contact group on the casing, the static contact group including two static contacts that are insulated from each other, the static contact group
  • the at least one stationary contact includes an upper terminal and a lower contact, the upper terminal and the lower contact being spaced apart from each other and electrically connected by a fuse; the bottom plate, the bottom plate is disposed in the casing, and Switching between a conducting position and a disconnecting position, the bottom plate being in contact with the stationary contact group to electrically conduct two static contacts of the static contact group, the bottom plate being in an open position Separating from the static contact group, the two static contacts of the static contact group are electrically disconnected; and the driving device is connected to the bottom plate to drive the bottom plate in the conducting position and Switch between disconnected positions.
  • the fuse realizes the functions of overload protection and short-circuit protection to improve the safety of the circuit system having the relay, avoiding fire or the like due to overcurrent or short circuit.
  • relay according to the above embodiment of the present disclosure may further have the following additional technical features:
  • an insulating ring is connected between the upper terminal and the lower contact, the upper terminal closes an upper end of the insulating ring, and the lower contact closes the insulating At a lower end of the ring, at least a portion of the fuse is disposed inside the insulating ring.
  • the fuse is spaced apart from an inner circumferential surface of the insulating ring by a predetermined distance.
  • the insulating ring is a ceramic ring.
  • the insulating ring is filled with quartz sand.
  • the insulating ring has a metal layer on both the upper end surface and the lower end surface.
  • the fuse has a cylindrical body, and edges of upper and lower ends of the fuse each have an outwardly extending flange, and the flange extends to the insulating ring On the end face.
  • the body of the fuse is located within the insulating ring, and an annular cavity surrounding the fuse is defined between the body portion of the fuse and an inner circumferential surface of the insulating ring.
  • the fuse has a fuse portion located at an intermediate position of the body portion in the axial direction.
  • the upper terminals are respectively soldered to the fuse and the insulating ring, and the lower contacts are respectively soldered to the fuse and the insulating ring.
  • a first connecting ring is disposed on a lower surface of the upper terminal, and the first connecting ring is respectively welded to an upper end surface of the insulating ring and an upper end of the fuse
  • a second connecting ring is disposed on the upper surface of the lower contact, and the second connecting ring is welded to the lower end surface of the insulating ring and the lower end of the fuse, respectively.
  • the axes of the first connecting ring and the second connecting ring both extend in the up and down direction, and the wall thickness of the first connecting ring and the second connecting ring is 1 mm Up to 5 mm.
  • the relay further includes a magnet disposed circumferentially.
  • the casing includes: a ceramic casing, the bottom of the ceramic casing is open; a pallet, the pallet is disposed under the ceramic casing to close the ceramic casing a bottom portion; a connecting table, the connecting station being respectively connected to the ceramic housing and the tray.
  • the housing is filled with hydrogen or helium.
  • the driving device includes: a push rod, an upper end of the push rod is connected to the bottom plate and a lower end protrudes downwardly from the casing, and an upper end of the push rod passes through the a bottom plate is connected with a circlip and a gasket, the circlip is stuck on the push rod, the gasket is located between the circlip and the connecting portion; a buffer spring, the buffer spring is sleeved in the Pushing the outer side of the rod, the upper end of the buffer spring abuts against the bottom plate, and the lower end of the buffer spring abuts against the push rod or the bottom wall of the casing.
  • an outer sheath of the upper end of the push rod is provided with an insulating sheath spaced apart from the push rod and the bottom plate, and an upper end of the buffer spring abuts against the insulating sheath.
  • FIG. 1 is a cross-sectional view of a relay of one embodiment of the present disclosure.
  • Figure 2 is an enlarged schematic view of the area shown by circle A in Figure 1.
  • Fig. 3 is a schematic exploded view of the relay shown in Fig. 1.
  • FIG. 4 is a cross-sectional view of a static contact of a relay of one embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a fuse and an insulating ring of a relay according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic exploded view of a short circuit protection structure in accordance with an embodiment of the present disclosure.
  • Figure 7 is a schematic illustration of a fuse of one embodiment of the present disclosure.
  • Fuse 3 flange 31, fuse portion 32, body portion 33,
  • the driving device 4 the sleeve 41, the limiting post 42, the iron core 43, the push rod 44, the return spring 45, the sheath 46, the buffer spring 47, the snap spring 48, the washer 49, the upper insulating cover 461, and the lower insulating cover 462.
  • a relay 100 includes a casing 1, a bottom plate 2, and a driving device 4.
  • the casing 1 is provided with at least one static contact group 11 , the static contact group 11 includes two mutually insulated static contacts 111 , and at least one of the static contact groups 11 includes an upper terminal 1111 and a lower portion Contact 1112.
  • the upper terminal 1111 and the lower contact 1112 are spaced apart from each other to be insulated, and the upper terminal 1111 and the lower contact 1112 are connected together by the fuse 3, thereby realizing the connection between the upper terminal 1111 and the lower contact 1112 through the fuse 3.
  • Electrical conductivity That is, the upper terminal 1111 and the lower contact 1112 are insulated from each other when the fuse 3 is not connected, and then the upper terminal 1111 and the lower contact 1112 are electrically connected by the fuse 3.
  • the bottom plate 2 is disposed in the casing 1 and is switchable between a conductive position and an open position. When the bottom plate 2 is in the conducting position, the bottom plate 2 is in contact with the two stationary contacts 111 of the static contact group 11 to electrically conduct the two stationary contacts 111 of the static contact group 11. As shown in FIG. 1, when the bottom plate 2 is in the open position, the bottom plate 2 is separated from the two stationary contacts 111 of the static contact group 11, so that the two stationary contacts 111 of the static contact group 11 are electrically disconnected.
  • the drive unit 4 is coupled to the base plate 2 to drive the base plate 2 to switch between a conductive position and an open position.
  • the fuse 3 in the stationary contact 111 is opened, thereby disconnecting the electrical connection between the plurality of stationary contacts 111, causing the relay 100 to be off. Open state, from And disconnect the circuit.
  • the overload protection and the short-circuit protection are implemented by the fuse 3 to improve the safety of the circuit system having the relay 100, thereby avoiding Fire caused by flow or short circuit.
  • the present disclosure uses the fuse 3 for overload protection, effectively avoiding the danger caused by current overload or short circuit.
  • the fuse 3 is integrated into the stationary contact 111 in the present disclosure to facilitate the replacement of the fuse 3 and the maintenance of the relay 100, facilitating the use and maintenance of the relay 100 and the circuitry having the relay 100.
  • the bottom plate 2 of the present disclosure may further be provided with at least one movable contact group corresponding to the static contact group 11, and each of the movable contact groups includes two electrically conductive movable contacts.
  • the movable contact group 21 When the bottom plate 3 is in the conducting position, the movable contact group 21 is in contact with the stationary contact group 11, and the two stationary contacts 111 of the static contact group 11. Electrically conductive.
  • the movable contact group When the bottom plate 2 is in the open position, the movable contact group is separated from the stationary contact group 11, and the two stationary contacts 111 of the static contact group 11 are separated. Disconnect electrical continuity.
  • At least one static contact set may be disposed on the casing 1 in the present disclosure.
  • At least one of the stationary contacts 111 of the at least one static contact group 11 includes an upper terminal 1111 and a lower contact 1112, and the upper terminal 1111 and the lower contact 1112 are electrically connected by a fuse.
  • the static contact group 11 is one, and one of the two stationary contacts 111 of the static contact group 11 includes the upper terminal 1111 and the lower contact 1112, or each of the static contact groups 11
  • the points 111 each include an upper terminal 1111 and a lower contact 1112.
  • the static contact group 11 is two, and one or each of the static contact groups 11 includes an upper terminal 1111 and a lower contact 1112, and two of the other static contact groups 11
  • the stationary contacts 111 do not include an upper terminal 1111 and a lower contact 1112.
  • the static contact set 11 is two, and each of the static contacts 111 of each of the two static contact sets 11 includes an upper terminal 1111 and a lower contact 1112.
  • the present disclosure does not limit the number of the static contact groups 11, for example, the number of the static contact groups 11 may be three, four or any other number.
  • the upper terminal 1111 and the lower contact 1112 may be connected to the casing 1 for the upper terminal 1111 and the lower contact 1112 to be relatively fixed, and the upper terminal 1111 and the lower The contacts 1112 are spaced apart from each other to be insulated from each other, and the upper terminal 1111 and the lower contact 1112 are electrically connected by a fuse 3. It is also possible to define a cavity between the upper terminal 1111 and the lower contact 1112 through the casing 1.
  • connection structure between the upper terminal 1111 and the lower contact 1112, so that the upper terminal 1111 and the lower contact 1112 are relatively fixed and the upper terminal 1111 and the lower contact 1112 are spaced apart from each other to be insulated, and the fuse 3 is passed through the fuse 3.
  • the upper terminal 1111 is electrically connected to the lower contact 1112.
  • an insulating ring 1113 is connected between the upper terminal 1111 and the lower contact 1112, the upper terminal 1111 closes the upper end of the insulating ring 1113, and the lower contact 1112 is closed.
  • the two ends of the insulating ring 1113 are closed by the upper terminal 1111 and the lower contact 1112 to be limited within the insulating ring 1113 Set a closed cavity.
  • At least a portion of the fuse 3 is disposed inside the insulating ring 1113.
  • the fuse 3 is accommodated by the insulating ring 1113, thereby providing a certain protection to the fuse 3, and when the fuse 3 is blown, the fuse 3 is prevented from being scattered to cause a safety hazard, thereby improving the safety performance of the relay 100.
  • the fuse 3 is spaced apart from the inner circumferential surface of the insulating ring 1113 by a predetermined distance to avoid difficulty in blowing the fuse 3 due to the bonding of the fuse 3 to the inner circumferential surface of the insulating ring 1113.
  • the fuse 3 has a fuse portion 32 spaced apart from the inner circumferential surface of the insulating ring 1113.
  • the insulating ring 1113 is made of a ceramic material, in other words, the insulating ring 1113 is a ceramic ring.
  • an insulating ring 1113 made of other materials such as plastic or the like can also be used.
  • the present disclosure is filled with quartz sand (not shown) in the insulating ring 1113. Quenching arc through quartz sand avoids the safety hazard caused by arcing, and reduces the impact of long arcing time on product safety when fuse 3 is blown.
  • a metal layer is provided on both the upper end surface and the lower end surface of the insulating ring 1113.
  • the upper and lower ends of the fuse 3 can be welded to the corresponding metal layer to realize the mounting of the fuse 3, so that the fuse 3 can be easily mounted and has high structural strength. Moreover, the conduction effect between the upper terminal 1111 and the fuse 3 and between the lower contact 1112 and the fuse 3 can also be improved by the metal layer.
  • the fuse 3 has a cylindrical body portion 33, and the edges of the upper and lower ends of the fuse 3 each have an outwardly extending flange 31, and the flange 31 It extends to the corresponding end face of the insulating ring 1113. That is, both ends of the fuse 3 are connected to the end faces of the insulating ring 1113, and the intermediate portion of the fuse 3 is located inside the insulating ring 1113.
  • the upper terminal 1111 can be electrically connected to the fuse 3 when closing the upper end of the insulating ring 1113, and the lower contact 1112 is at the lower end of the closed insulating ring 1113.
  • the fuse 3 can be easily electrically connected, thereby improving the mounting efficiency of the relay 100, and the upper terminal 1111 and the lower contact 1112 can be stably electrically connected to the fuse 3.
  • the body portion 33 of the fuse 3 is disposed in the insulating ring 1113, the body portion 33 of the fuse 3 is spaced apart from the inner circumferential surface of the insulating ring 1113, and the body portion 33 of the fuse 3 is provided.
  • An annular cavity 1114 is defined between the inner circumferential surface of the insulating ring 1113, and the annular cavity 1114 surrounds the body portion 33 of the fuse 3.
  • the fuse portion 32 of the fuse is located at an intermediate position of the body portion 33 of the fuse 3 in the axial direction (refer to the vertical direction in Fig. 5) to further facilitate the blown fuse.
  • the fuse 3 is welded to the insulating ring 1113 to stably mount the fuse 3 to the insulating ring by soldering.
  • the stability and safety of the relay 100 are improved.
  • the fuse 3 is fixed, the upper terminal 1111 and the lower contact 1112 can be easily mounted, improving the assembly efficiency of the relay 100.
  • the upper terminal 1111 is welded to the fuse 3 and the insulating ring 1113, respectively, and the lower contact 1112 is welded to the fuse 3 and the insulating ring 1113, respectively.
  • the lower surface of the upper terminal 1111 of the present disclosure is provided with a first connecting ring 1115, and the first connecting ring 1115 and the upper end surface of the insulating ring 1113, respectively.
  • the upper end of the fuse 3 is welded.
  • the upper surface of the lower contact 1112 is provided with a second connecting ring 1116, and the second connecting ring 1116 is welded to the lower end surface of the insulating ring 1113 and the lower end of the fuse 3, respectively.
  • the axes of the first connecting ring 1115 and the second connecting ring 1116 both extend in the up and down direction, and the wall thickness of the second connecting ring 1116 and the first connecting ring 1115 is in the range of 1 mm to 5 mm.
  • the relay 100 further includes a magnet (not shown) disposed circumferentially. Under the action of the magnetic field of the magnet, the arc is elongated, and at this time, the arc is divided into segments by the arc chute, thereby functioning as an arc extinguishing through the magnet.
  • the casing 1 includes a ceramic casing 101, a pallet 102, and a connecting platform 103.
  • the bottom of the ceramic housing 101 is open, and the tray 102 is disposed under the ceramic housing 101 to close the bottom of the ceramic housing 101.
  • the connecting base 103 is connected to the ceramic housing 101 and the tray 102, respectively.
  • a sealed cavity can be formed in the ceramic casing 101 to prevent dust and the like from entering the casing 1, and the electric safety can be improved.
  • the casing 1 is decomposed into the ceramic casing 101, the pallet 102, and the connecting table 103, which facilitates the mounting of components such as the bottom plate 2, the driving device 4, and the like.
  • Ceramics have good strength, high chemical and thermal stability, and are also poor conductors of electricity. Therefore, a ceramic housing is employed in the present disclosure. The insulation performance of the casing 1 is improved to reduce safety hazards.
  • the casing 1 may be other insulating materials.
  • the specific material of the casing 1 is not limited in the present disclosure, and may be adapted in practical applications.
  • the casing 1 is filled with hydrogen or helium.
  • the arc extinguishing gas layer can be formed, and during the switching process of the relay 100, the arc is quickly extinguished by the hydrogen gas and the helium gas, thereby reducing the safety hazard.
  • the drive unit 4 is coupled to the bottom of the housing 1, and the drive unit 4 includes a push rod 44 and a buffer spring 47.
  • the upper end of the push rod 44 is connected to the bottom plate 2 and the lower end extends downwardly from the casing 1.
  • the upper end of the push rod 44 passes through the bottom plate 2 and is connected with a retaining spring 48 and a spacer 49.
  • the retaining spring 48 is caught on the push rod 44, and the pad is inserted.
  • the sheet 49 is located between the catch spring 48 and the connecting portion 202.
  • the buffer spring 47 is sleeved on the outside of the push rod 44, the upper end of the buffer spring 47 abuts against the bottom plate 2, and the lower end of the buffer spring 47 abuts against the push rod 44 or the bottom wall of the casing 1. Pass The buffer spring 47 and the snap spring 48 cooperate to realize the buffering of the bottom plate 2. During the conduction and disconnection of the relay, the rigid contact between the static contact group 11 and the movable contact group 21 can be avoided by buffering, and the relay is improved. Stability and reduce the noise of the relay.
  • a sheath 46 is disposed on the bottom plate 2, and the insulation between the bottom plate 2 and the push rod 44 can be realized by the sheath 46 to avoid damage of the low-voltage end components and breakdown, thereby improving the relay. 100 quality and safety of use.
  • an insulating sheath 46 is sleeved on the outer circumference of the upper end of the push rod 44 to space the push rod 44 and the bottom plate 2, and the upper end of the buffer spring 47 abuts against the insulating sheath 46 to electrically isolate the buffer. Spring 47 and bottom plate 2.
  • the bottom plate 2 is provided with a through hole, and an insulating sheath 46 may be disposed inside the through hole, and the insulating sheath 46 may be sleeved on the outer side of the push rod 44.
  • the push rod 44 can be protected to a certain extent, so that the accuracy and smoothness of the action of the push rod 44 can be ensured, thereby improving the performance of the relay 100.
  • the driving device 4 further includes a sleeve 41, a limiting post 42, an iron core 43, and a return spring 45.
  • the upper end of the sleeve 41 is connected to the casing 1.
  • the limiting post 42 is disposed at an upper portion of the sleeve 41 and connected to the casing 1.
  • the iron core 43 is disposed at a lower portion of the sleeve 41 and is movable up and down to push the rod 44. One end is connected to the iron core 43 and the other end is connected to the bottom plate 2.
  • the return spring 45 is sleeved on the outside of the push rod 44 and both ends press the iron core 43 and the limit post 42 respectively.
  • the lower end of the return spring 45 presses against the iron core 43, and the upper end of the return spring 45 abuts against the limit post 42. Thereby, under the action of the return spring 45, the action of the driving device 4 is made smoother and the control of the opening and closing of the relay 100 is easily realized.
  • the upper end of the push rod 44 (eg, the upper end of the push rod 44 in FIG. 1 or 2) can pass through a through hole in the bottom plate 2, pushing the rod
  • the end of the through hole is provided with a retaining spring 48 and a washer 49.
  • the washer 49 can reduce the force of the retaining spring 48 and prevent the retaining spring 48 from coming off, which can further improve the operational stability of the relay 100.
  • the outer side of the push rod 44 (for example, the side away from the push rod 44 in FIGS. 1 and 2) is sleeved with a buffer spring 47 which can be used to constantly push the push rod 44 to press the bottom plate 2 against the retaining spring 48. Thereby, the action of the push lever 44 can be made gentler, and the operation accuracy of the relay 100 can be improved.
  • one end of the buffer spring 47 is connected to the bottom plate 2, and the other end of the buffer spring 47 is connected to one of the push rod 44 and the casing.
  • the first end of the buffer spring 47 is coupled to the bottom plate 2 (eg, the upper end of the buffer spring 47 of FIG. 2), and the second end of the buffer spring 47 (eg, the buffer spring of FIG. 1)
  • the lower end of the 47 is connected to the bottom plate 2; the first end of the buffer spring 47 may be connected to the bottom plate 2 (for example, the upper end of the buffer spring 47 in Fig. 2).
  • the second end of the flushing spring 47 (for example, the lower end of the buffer spring 47 in Fig. 1) is connected to the casing 1.
  • the upper end of the buffer spring 47 is connected to the casing 1 and the lower end is connected to the bottom plate 2, and the buffer spring should always be in a stretched state. This can improve the smoothness of the operation of the relay 100 and better meet the needs of the user.
  • the insulating sheath 46 of the present disclosure includes an upper insulating cover 461 and a lower insulating cover 462, and the upper insulating cover 461 includes a first cylindrical body and a first flange at an upper end of the first cylindrical body, and a lower insulating cover 462 A second barrel and a second flange at a lower end of the second barrel are included.
  • a first cylinder of the upper insulating cover is inserted into the through hole, and the first flange abuts against the upper surface of the bottom plate
  • the second cylinder of the lower insulating cover is inserted into the through hole, and the second flange abuts the bottom plate On the lower surface.
  • the first cylinder is inserted into the second cylinder, and the first cylinder and the second cylinder are inserted into the through hole together.
  • the relay 100 has both an overcurrent protection function of the circuit and a function of the circuit breaker.
  • the short circuit protection structure is composed of an upper terminal 1111, a ceramic ring (ie, an insulating ring 1113), a fuse 3, and a lower contact 1112.
  • the short-circuit protection structure can be assembled as follows to metallize the upper and lower surfaces of the ceramic ring, and after the fuse 3 is folded into two, the fuse 3 and the ceramic ring are brazed, and then the ceramic ring and the lower contact 1112 are brazed, and quartz sand is injected into the ceramic ring.
  • the lower contact 1112, the ceramic ring and the upper terminal 1111 constitute the stationary contact 111 with the fuse 3 shown in FIG.
  • the fuse 3 functions as an overload protection.
  • the quartz sand acts as an arc extinguishing action when the fuse 3 is blown
  • the ceramic ring serves to support, fix, prevent splashing when the fuse 3 is blown, and the insulation of the upper and lower contacts 1112 after the fuse 3 is blown. .
  • the fuse 3 is first soldered to the ceramic ring, and the lower contact 1112 of the upper terminal 1111 is soldered to the ceramic ring to form the stationary contact 111, and then the stationary contact 111 is Soldering on the ceramic casing 101, two sets of insurance mechanisms are formed, and the buffer spring, the lower insulating cover, the bottom plate, the upper insulating cover and the last assembled washer are sequentially assembled on the push rod, and then fixed by a snap spring.
  • the drive unit 4 After assembling the above components, the drive unit 4 is mounted.
  • the push rod is sequentially loaded with the pallet 102, the limit post 42, and the return spring 45, and the iron core 43 is fixed by laser welding or screwing with the push rod.
  • the relay As shown in Fig. 1, the relay is in an open state.
  • the driving device 4 starts working, the bottom plate is in contact with the stationary contact 111 with the fuse 3, and the load current is passed through the fuse 3 when the load current is too high or When the circuit is short-circuited, the fuse is blown to protect it.
  • the external magnet of the relay 100, the hydrogen in the cavity and the quartz sand in the ceramic ring can quickly extinguish the arc.
  • the two sets of safety static contacts 111 act simultaneously, which is safer to protect.
  • the upper insulating cover and the lower insulating cover isolate the push rod from the high voltage load end, thereby insulating the high and low voltages, thereby avoiding damage and breakdown of the low voltage end components, thereby improving product quality and safety. Sex.
  • the present disclosure uses the fuse 3 for overload protection, effectively avoiding the danger caused by current overload or short circuit.
  • the external magnet of the relay 100, the hydrogen in the cavity and the quartz sand in the ceramic ring reduce the influence of the long arcing time on the safety of the product when the fuse 3 is blown, and the two sets of safety static contacts 111 simultaneously
  • the function improves the accuracy of the product's fusing and the safety of use.
  • the present disclosure will fuse 3 and relay 100 In combination, the overall use space and cost are saved, and the use of the arc extinguishing mechanism of the relay 100 to the fuse 3 can effectively improve the quality and safety of the product.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include at least one of the features, either explicitly or implicitly.
  • the meaning of "a plurality” is at least two, such as two, three, etc., unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed”, and the like, are to be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated or defined otherwise. , or integrated; can be mechanical or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements, unless otherwise specified Limited.
  • the specific meanings of the above terms in the present disclosure can be understood by those skilled in the art on a case-by-case basis.
  • the first feature "on” or “under” the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact.
  • the first feature "above”, “above” and “above” the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

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Abstract

一种继电器（100），包括：机壳（1）上设有至少一个静触点组（11），静触点组（11）包括两个相互绝缘的静触点（111），静触点组（11）的至少一个静触点（111）包括上接线柱（1111）和下触点（1112），上接线柱（1111）和下触点（1112）相互隔开并通过保险丝（3）电连接；底板（2），底板（2）设在所述机壳（1）内，并可在导通位置和断开位置之间切换，底板位于导通位置时与静触点组（11）接触使静触点组（11）的两个静触点（111）电导通，底板（2）位于断开位置时与静触点组（11）分离使静触点组（11）的两个静触点（111）断开电导通；驱动装置（4），驱动装置（4）与底板（2）相连以驱动底板（2）在导通位置和断开位置之间切换。该方案的继电器，保险丝实现了过载保护以及短路保护的作用，以提高具有该继电器的电路系统的安全性，避免由于过流或短路引起的火灾等。

Description

继电器 技术领域
本公开涉及电器设备技术领域，特别涉及一种继电器。
背景技术
电器在使用过程中，可能会出现短路的问题。在相关技术中，继电器没有过载保护装置。在继电器导通时，一旦负载电流过大或电路发生短路容易导致烧结，使产品丧失功能，发生危险。另外，上述继电器没有灭弧装置，拉弧时间长，产品使用寿命短。
发明内容
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本公开的一个目的在于提出一种继电器，降低或避免了由于电流过载或短路引起的安全隐患。
根据本公开实施例的继电器，包括：机壳，所述机壳上设有至少一个静触点组，所述静触点组包括两个相互绝缘的静触点，所述静触点组的至少一个静触点包括上接线柱和下触点，所述上接线柱和所述下触点相互隔开并通过保险丝电连接；底板，所述底板设在所述机壳内，并可在导通位置和断开位置之间切换，所述底板位于导通位置时与所述静触点组接触使所述静触点组的两个静触点电导通，所述底板位于断开位置时与静触点组分离使所述静触点组的两个静触点断开电导通；驱动装置，所述驱动装置与所述底板相连以驱动所述底板在所述导通位置和所述断开位置之间切换。
根据本公开实施例的继电器，保险丝实现了过载保护以及短路保护的作用，以提高具有该继电器的电路系统的安全性，避免由于过流或短路引起的火灾等。
另外，根据本公开上述实施例的继电器，还可以具有如下附加的技术特征：
在本公开的一些实施例中，所述上接线柱和所述下触点之间连接有绝缘环，所述上接线柱封闭所述绝缘环的上端，且所述下触点封闭所述绝缘环的下端，所述保险丝的至少一部分设在所述绝缘环内侧。
在本公开的一些实施例中，所述保险丝与所述绝缘环的内周面间隔开预定距离。
在本公开的一些实施例中，所述绝缘环为陶瓷环。
在本公开的一些实施例中，所述绝缘环内填充有石英砂。
在本公开的一些实施例中，所述绝缘环的上端面和下端面上均设有金属层。
在本公开的一些实施例中，所述保险丝具有圆筒形的本体，且所述保险丝的上下两端的边沿均具有向外延伸的翻边，且所述翻边延伸到所述绝缘环上对应的端面上。
在本公开的一些实施例中，所述保险丝的本体位于绝缘环内，且所述保险丝的本体部与所述绝缘环的内周面之间限定出环绕所述保险丝的环形腔。
在本公开的一些实施例中，所述保险丝具有熔断部，熔断部位于所述本体部沿轴线方向的中间位置。
在本公开的一些实施例中，所述上接线柱分别与所述保险丝和所述绝缘环焊接，所述下触点分别与所述保险丝和所述绝缘环焊接。
在本公开的一些实施例中，所述上接线柱的下表面上设有第一连接环，所述第一连接环分别与所述绝缘环的上端面和所述保险丝的上端焊接，所述下触点的上表面上设有第二连接环，所述第二连接环分别与所述绝缘环的下端面和所述保险丝的下端焊接。
在本公开的一些实施例中，所述第一连接环和所述第二连接环的轴线均沿上下方向延伸，且所述第一连接环和所述第二连接环的壁厚在1毫米到5毫米的范围内。
在本公开的一些实施例中，所述继电器还包括沿周向设置的磁铁。
在本公开的一些实施例中，所述机壳包括：陶瓷壳体，所述陶瓷壳体的底部敞开；托板，所述托板设在所述陶瓷壳体下面以封闭所述陶瓷壳体底部；连接台，所述连接台分别与所述陶瓷壳体和所述托板相连。
在本公开的一些实施例中，所述机壳内填充有氢气或氦气。
在本公开的一些实施例中，所述驱动装置包括：推动杆，所述推动杆的上端与所述底板相连且下端向下伸出所述机壳，所述推动杆的上端穿过所述底板并连接有卡簧和垫片，所述卡簧卡在所述推动杆上，所述垫片位于所述卡簧和所述连接部之间；缓冲弹簧，所述缓冲弹簧套在所述推动杆的外侧，所述缓冲弹簧的上端抵在所述底板上，且所述缓冲弹簧的下端抵在所述推动杆或所述机壳的底壁上。
进一步地，所述推动杆上端的外周套设有间隔开所述推动杆和所述底板的绝缘护套，所述缓冲弹簧的上端抵在所述绝缘护套上。
附图说明
图1是本公开一个实施例的继电器的剖视图。
图2是图1中圈A所示区域的放大示意图。
图3是图1示出的继电器的爆炸示意图。
图4是本公开一个实施例的继电器的静触点的剖视图。
图5是本公开一个实施例的继电器的保险丝和绝缘环配合的示意图。
图6是本公开一个实施例的短路保护结构的爆炸示意图。
图7是本公开一个实施例的保险丝的示意图。
附图标记：
继电器100
机壳1，静触点组11，静触点111，上接线柱1111，下触点1112，绝缘环1113，环形腔1114，第一连接环1115，第二连接环1116，陶瓷壳体101，托板102，连接台103，
底板2，
保险丝3，翻边31，熔断部32，本体部33，
驱动装置4，套筒41，限位柱42，铁芯43，推动杆44，复位弹簧45，护套46，缓冲弹簧47，卡簧48，垫圈49，上绝缘罩461，下绝缘罩462。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本公开，而不能理解为对本公开的限制。
下面参照附图详细描述本公开实施例的继电器100。
结合图1至图6，根据本公开一个实施例的继电器100，包括：机壳1、底板2以及驱动装置4。
机壳1上设有至少一个静触点组11，静触点组11包括两个相互绝缘的静触点111，静触点组11中的至少一个静触点111包括上接线柱1111和下触点1112。上接线柱1111与下触点1112相互隔开以绝缘，且上接线柱1111和下触点1112之间通过保险丝3连接在一起，从而通过保险丝3实现上接线柱1111和下触点1112之间的电导通。也就是说，在没有连接保险丝3时上接线柱1111和下触点1112之间相互绝缘，然后通过保险丝3将上接线柱1111和下触点1112电连接。
底板2设在机壳1内，并可在导通位置和断开位置之间切换。底板2位于导通位置时，底板2与静触点组11的两个静触点111接触，以将静触点组11的两个静触点111电导通。如图1所示，在底板2位于断开位置时，底板2与静触点组11的两个静触点111分离，使得静触点组11的两个静触点111断开电导通。
驱动装置4与底板2相连以驱动底板2在导通位置和断开位置之间切换。
在继电器100的使用过程中，如果出现电流过载或短路等问题时，静触点111中的保险丝3断开，从而使多个静触点111之间的电连接断开，使继电器100处于断开状态，从 而断开电路。
根据本公开实施例的继电器100，由于在静触点111中设置了保险丝3，通过保险丝3实现了过载保护以及短路保护的作用，以提高具有该继电器100的电路系统的安全性，避免由于过流或短路引起的火灾等。
本公开使用保险丝3进行过载保护，有效的避免了电流过载或短路造成的危险。
本公开中将保险丝3集成在静触点111内，方便保险丝3的更换以及继电器100的维护，便于继电器100以及具有该继电器100的电路系统的使用和维护。
进一步地，本公开的底板2上还可以设有至少一个动触点组，动触点组与静触点组11对应，且每个动触点组包括两个电导通的动触点。底板3位于导通位置时，动触点组21与静触点组11接触，静触点组11的两个静触点111。电导通。在底板2位于断开位置时，动触点组与静触点组11分离，静触点组11的两个静触点111。断开电导通。
本公开中的机壳1上可以设置至少一个静触点组。至少一个静触点组11的至少一个静触点111包括上接线柱1111和下触点1112，且上接线柱1111和下触点1112由保险丝导通。例如，静触点组11为一个，且这个静触点组11的两个静触点111中的一个包括上接线柱1111和下触点1112，或这个静触点组11的每个静触点111均包括上接线柱1111和下触点1112。再例如，静触点组11为两个，其中一个静触点组11中的一个或每个静触点111包括上接线柱1111和下触点1112，而另一个静触点组11的两个静触点111没有包括上接线柱1111和下触点1112。再例如，静触点组11为两个，且两个静触点组11中的每一个的每个静触点111均包括上接线柱1111和下触点1112。
当然，本公开对静触点组11的数量均没有做限定，例如，静触点组11的数量可以为三个、四个或其它任意的数量。
在本公开的一个具体示例中，可以将上接线柱1111与下触点1112均连接在机壳1上，用于上接线柱1111和下触点1112相对固定，并使上接线柱1111和下触点1112相互间隔开以相互绝缘，通过保险丝3将上接线柱1111与下触点1112电连接。也可以通过机壳1在上接线柱1111和下触点1112之间限定出空腔。还可以在上接线柱1111与下触点1112之间设置连接结构，使上接线柱1111与下触点1112相对固定并使上接线柱1111与下触点1112相互间隔开以绝缘，通过保险丝3将上接线柱1111与下触点1112电连接。本公开中，仅需上接线柱1111和下触点1112之间未连接保险丝3时相互绝缘，并可以通过保险丝3电连接即可。下面参照附图描述一些具体实施例的连接结构。
如图3和图4，在本公开的一些实施例中，上接线柱1111和下触点1112之间连接有绝缘环1113，上接线柱1111封闭绝缘环1113的上端，且下触点1112封闭绝缘环1113的下端。通过上接线柱1111和下触点1112封闭绝缘环1113的两端，以在绝缘环1113内限 定出一个封闭的腔。保险丝3的至少一部分设在绝缘环1113内侧。也就是说，通过绝缘环1113容纳保险丝3，从而对保险丝3起到一定的保护作用，而且在保险丝3熔断时，避免熔断的保险丝3散落产生安全隐患，从而提高了继电器100的安全性能。
为了便于保险丝熔断时可以顺利的断开，本公开中，保险丝3与绝缘环1113的内周面间隔开预定距离，以避免由于保险丝3与绝缘环1113的内周面贴合导致保险丝3熔断困难。可选地，保险丝3的具有与绝缘环1113的内周面间隔开的熔断部32。
由于陶瓷具有结构稳定以及绝缘性能好等优点，本公开中，使用陶瓷材料制作绝缘环1113，换言之，绝缘环1113为陶瓷环。当然，也可以采用其他材料制成的绝缘环1113，例如塑料等。
更进一步的，为了进一步地提高继电器100的灭弧效果，本公开在绝缘环1113内填充有石英砂(未示出)。通过石英砂灭弧，避免了由于产生电弧导致的安全隐患，减少了保险丝3熔断时，拉弧时间长对产品安全造成的影响。
在本公开的一些实施例中，为了便于保险丝3与上接线柱1111和下触点1112之间的电连接，绝缘环1113的上端面和下端面上均设有金属层。
由于绝缘环1113的上端面和下端面上设置了金属层，可以将保险丝3的上下两端与对应的金属层焊接还实现保险丝3的安装，使保险丝3的安装方便且结构强度高。而且通过金属层还可以提高上接线柱1111和保险丝3之间以及下触点1112和保险丝3之间的导通效果。
进一步地，结合图4、图5、图6以及图7，保险丝3的具有圆筒形的本体部33，且保险丝3的上下两端的边沿均具有向外延伸的翻边31，且翻边31延伸到绝缘环1113上对应的端面上。也就是说，保险丝3的两端连接在绝缘环1113的端面上，而且保险丝3的中间部分位于绝缘环1113内。在装配过程中，由于保险丝3的两端设置在绝缘环1113的端面上，上接线柱1111在封闭绝缘环1113上端时可以方便地电连接保险丝3，而下触点1112在封闭绝缘环1113下端时可以方便地电连接保险丝3，从而提高继电器100的安装效率，并且上接线柱1111以及下触点1112可与保险丝3稳定地电连接。
进一步地，如图5所示并结合图6，保险丝3的本体部33设置在绝缘环1113内，保险丝3的本体部33与绝缘环1113的内周面间隔开，且保险丝3的本体部33与绝缘环1113的内周面之间限定出环形腔1114，环形腔1114环绕保险丝3的本体部33。从而通过环形腔1114实现保险丝3的本体部33与绝缘环1113的有效隔离，使保险丝3可以顺利熔断。
如图5所示并结合图7，保险丝的熔断部32位于保险丝3的本体部33沿轴线方向(参照图5中的上下方向)的中间位置，进一步地方便保险丝熔断。
可选地，保险丝3与绝缘环1113焊接，以通过焊接将保险丝3稳定地安装在绝缘环 1113上，提高继电器100的稳定性和安全性。而且由于保险丝3被固定，上接线柱1111和下触点1112可方便地安装，提高继电器100的装配效率。
进一步地，上接线柱1111分别与保险丝3和绝缘环1113焊接，且下触点1112分别与保险丝3和绝缘环1113焊接。
优选地，为了提高各部分的焊接效果，如图4所示，本公开的上接线柱1111的下表面上设有第一连接环1115，第一连接环1115分别与绝缘环1113的上端面和保险丝3的上端焊接。下触点1112的上表面设有第二连接环1116，第二连接环1116分别与绝缘环1113的下端面和保险丝3的下端焊接。提高焊接处焊锡的均匀性，从而提高焊接的稳定性。
参照图4，第一连接环1115和第二连接环1116的轴线均沿上下方向延伸，且第二连接环1116和第一连接环1115的壁厚在1毫米到5毫米的范围内。
在本公开的一些实施例中，继电器100还包括沿周向设置的磁铁(未示出)。在磁铁的磁场作用下，将电弧拉长，此时通过灭弧栅将电弧分割为段，从而通过磁铁起到灭弧的作用。
结合图1和图3，在本公开的一些实施例中，机壳1包括：陶瓷壳体101，托板102，连接台103。其中，陶瓷壳体101的底部敞开，托板102设在陶瓷壳体101下面以封闭陶瓷壳体101底部，连接台103分别与陶瓷壳体101和托板102相连。通过陶瓷壳体101和托板102的配合，可在陶瓷壳体101内形成一个密封的空腔，以避免灰尘等进入到机壳1内，同时可以提高用电安全。而且将机壳1分解为陶瓷壳体101、托板102和连接台103，可以方便底板2、驱动装置4等元件的安装。
陶瓷具有较好地强度、高的化学稳定性和热稳定性，而且还是电的不良导体。因此，本公开中采用陶瓷壳体。提高了机壳1的绝缘性能，以减少安全隐患。
当然，在本公开其他实施例中，机壳1可以为其他的绝缘材质，本公开对机壳1的具体材质不作限定，实际应用中可以适应选择。
进一步地，机壳1内填充有氢气或氦气。通过氢气和氦气，可以形成灭弧气体层，在继电器100开关过程中，通过氢气和氦气快速地灭弧，降低安全隐患。
在充满氢气或氮气的密闭空间里，当保险丝3正常工作产生电弧时，在气体(氢气或氮气)的冷却作用下，能实现快速灭弧，从而可以进一步提高继电器100的使用安全性。
在本公开的一些实施例中，结合图1、图2以及图3，驱动装置4连接在机壳1底部，驱动装置4包括推动杆44和缓冲弹簧47。推动杆44的上端与底板2相连且下端向下伸出机壳1，推动杆44的上端穿过底板2并连接有卡簧48和垫片49，卡簧48卡在推动杆44上，垫片49位于卡簧48和连接部202之间。缓冲弹簧47套在推动杆44的外侧，缓冲弹簧47的上端抵在底板2上，且缓冲弹簧47的下端抵在推动杆44或机壳1的底壁上。通过 缓冲弹簧47和卡簧48等的配合，实现对底板2的缓冲，在继电器的导通和断开过程中，通过缓冲可以避免静触点组11与动触点组21的刚性接触，提高继电器的稳定性，并降低继电器的噪音。
结合图1和图2，底板2上设置了护套46，通过护套46可以实现底板2与推动杆44之间的隔离，避免低压端元器件的损坏及击穿现象的发生，从而提升继电器100的品质及使用安全性。
进一步地，结合图1和图2，绝缘护套46套设在推动杆44上端的外周以间隔开推动杆44和底板2，缓冲弹簧47的上端抵在绝缘护套46上，从而电隔离缓冲弹簧47与底板2。
进一步地，如图2所示，底板2上设有过孔，绝缘护套46可以设在所述过孔的内侧，且绝缘护套46可以套设在推动杆44的外侧。由此，可以对推动杆44进行一定的保护，从而可以保证推动杆44动作的准确性以及平稳性，进而提高继电器100的使用性能。
进一步地，如图1所示，驱动装置4还包括套筒41、限位柱42、铁芯43和复位弹簧45。
套筒41上端与机壳1相连，限位柱42设在套筒41内的上部并与机壳1相连，铁芯43设在套筒41内的下部并沿上下可移动，推动杆44的一端与铁芯43相连且另一端与底板2相连，复位弹簧45套在推动杆44外侧且两端分别抵压铁芯43和限位柱42。由此，易于通过驱动装置44实现对继电器100通断的控制，从而可以在一定程度上提高继电器100的使用性能。
其中，在图1的示例中，复位弹簧45的下端抵压铁芯43，且复位弹簧45的上端抵压限位柱42。由此，在复位弹簧45的作用下，使得驱动装置4的动作更加平稳且易于实现对继电器100通断的控制。
如图1至图3所示，在本公开的一些实施例中，推动杆44的上端(例如，图1或图2中推动杆44的上端)可以穿过底板2上的过孔，推动杆44穿过过孔的端部设有卡簧48和垫圈49，垫圈49能够减小卡簧48的受力且可防止卡簧48脱落，这样可以进一步提高继电器100的工作稳定性。推动杆44的外侧(例如，图1和图2中远离推动杆44的一侧)套设有缓冲弹簧47，缓冲弹簧47可以用于常推动推动杆44使底板2压紧卡簧48。由此，可使推动杆44的动作更加平缓，还可以改善继电器100的动作准确性。
其中，缓冲弹簧47的一端与底板2相连，且缓冲弹簧47的另一端与推动杆44和机壳中的一个相连。
也就是说，结合图1和图2，缓冲弹簧47的第一端与底板2相连(例如，图2中缓冲弹簧47的上端)，缓冲弹簧47的第二端(例如，图1中缓冲弹簧47的下端)与底板2相连；也可以是缓冲弹簧47的第一端与底板2相连(例如，图2中缓冲弹簧47的上端)，缓 冲弹簧47的第二端(例如，图1中缓冲弹簧47的下端)与机壳1相连。当然还可以是缓冲弹簧47的上端连接机壳1而下端连接底板2，此时缓冲弹簧应当常处于拉伸的状态。这样可以提高继电器100的动作平稳性，更好地满足用户的需求。
另外，参照图2，本公开的绝缘护套46包括上绝缘罩461和下绝缘罩462，上绝缘罩461包括第一筒体和位于第一筒体上端的第一凸缘，下绝缘罩462包括第二筒体和位于第二筒体下端的第二凸缘。上绝缘罩的第一筒体插入所述过孔内，且第一凸缘抵在底板的上表面，下绝缘罩的第二筒体插入所述过孔内，且第二凸缘抵在底板的下表面上。第一筒体插入第二筒体内，并第一筒体和第二筒体一起插入过孔内。
如图1至图6所示，根据本公开实施例的继电器100，既有电路的过流保护作用，又能够实现断路器的功能。其中短路保护结构由上接线柱1111、陶瓷环(即绝缘环1113)、保险丝3、下触点1112组成。短路保护结构可如下进行装配，金属化处理陶瓷环上下表面，并将保险丝3对折成型后钎焊保险丝3与陶瓷环，然后钎焊陶瓷环与下触点1112，在陶瓷环内注入石英砂。即下触点1112，陶瓷环与上接线柱1111组成图4所示带有保险丝3的静触点111。保险丝3起到过载保护的作用，石英砂在保险丝3熔断时起到灭弧作用，陶瓷环起到支撑、固定、在保险丝3熔断时防止飞溅、以及保险丝3熔断后上下触点1112的绝缘作用。
在装配根据本公开实施例的继电器100时，先将保险丝3焊接在陶瓷环上，再将上接线柱1111的下触点1112焊接在陶瓷环上构成静触点111，然后将静触点111焊在陶瓷壳体101上，形成两组保险机构，依次在推动杆上装配缓冲弹簧、下绝缘罩、底板、上绝缘罩最后装配垫圈，再用卡簧固定。
将上述组件组装后，再安装驱动装置4。推动杆依次装上托板102、限位柱42、复位弹簧45，铁芯43用激光焊接或者螺纹的方式与推动杆固定。如图1中所示，中所示，继电器为断开状态，当驱动装置4开始工作后，底板和带有保险丝3的静触点111接触，负载电流通过保险丝3，当负载电流过高或电路发生短路时，保险丝熔断，以起到保护作用。继电器100的外置磁铁，腔体内的氢气以及陶瓷环内的石英砂的共同作用下，能够迅速灭弧。两组保险静触点111同时作用，更安全的起到保护作用。在导通状态下，上绝缘罩与下绝缘罩将推动杆与高压负载端隔离，进而将高低压绝缘，避免低压端元器件的损坏及击穿现象的发生，从而提升了产品的品质及安全性。
本公开使用保险丝3进行过载保护，有效的避免了电流过载或短路造成的危险。同时继电器100的外置磁铁，腔体内的氢气以及陶瓷环内的石英砂的共同作用下，减少了保险丝3熔断时，拉弧时间长对产品安全造成的影响，两组保险静触点111同时作用，进而提高了产品的熔断的准确性以及使用的安全性。相比而言，本公开将保险丝3与继电器100 相结合，节约了整体使用空间以及成本，将继电器100的灭弧机构使用到保险丝3上能够有效提升产品的品质及安全性。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”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，因此不能理解为对本公开的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本公开的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本公开中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本公开中的具体含义。
在本公开中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (17)

  1. 一种继电器，其特征在于，包括：
    机壳，所述机壳上设有至少一个静触点组，所述静触点组包括两个相互绝缘的静触点，所述静触点组的至少一个静触点包括上接线柱和下触点，所述上接线柱和所述下触点相互隔开并通过保险丝电连接；
    底板，所述底板设在所述机壳内，并可在导通位置和断开位置之间切换，所述底板位于导通位置时与所述静触点组接触使所述静触点组的两个静触点电导通，所述底板位于断开位置时与静触点组分离使所述静触点组的两个静触点断开电导通；
    驱动装置，所述驱动装置与所述底板相连以驱动所述底板在所述导通位置和所述断开位置之间切换。
  2. 根据权利要求1所述的继电器，其特征在于，所述上接线柱和所述下触点之间连接有绝缘环，所述上接线柱封闭所述绝缘环的上端，且所述下触点封闭所述绝缘环的下端，所述保险丝的至少一部分设在所述绝缘环内侧。
  3. 根据权利要求2所述的继电器，其特征在于，所述保险丝与所述绝缘环的内周面间隔开预定距离。
  4. 根据权利要求2所述的继电器，其特征在于，所述绝缘环为陶瓷环。
  5. 根据权利要求2所述的继电器，其特征在于，所述绝缘环内填充有石英砂。
  6. 根据权利要求2所述的继电器，其特征在于，所述绝缘环的上端面和下端面上均设有金属层。
  7. 根据权利要求6所述的继电器，其特征在于，所述保险丝具有圆筒形的本体，且所述保险丝的上下两端的边沿均具有向外延伸的翻边，且所述翻边延伸到所述绝缘环上对应的端面上。
  8. 根据权利要求7所述的继电器，其特征在于，所述保险丝的本体部位于绝缘环内，所述保险丝的本体部与所述绝缘环的内周面间隔开，且所述保险丝的本体部与所述绝缘环的内周面之间限定出环绕所述保险丝的本体部的环形腔。
  9. 根据权利要求8所述的继电器，其特征在于，所述保险丝具有熔断部，熔断部位于所述本体部沿轴线方向的中间位置。
  10. 根据权利要求2-9中任一项所述的继电器，其特征在于，所述上接线柱分别与所述保险丝和所述绝缘环焊接，所述下触点分别与所述保险丝和所述绝缘环焊接。
  11. 根据权利要求10所述的继电器，其特征在于，所述上接线柱的下表面上设有第一连接环，所述第一连接环分别与所述绝缘环的上端面和所述保险丝的上端焊接，所述下触 点的上表面上设有第二连接环，所述第二连接环分别与所述绝缘环的下端面和所述保险丝的下端焊接。
  12. 根据权利要求11所述的继电器，其特征在于，所述第一连接环和所述第二连接环的轴线均沿上下方向延伸，且所述第一连接环和所述第二连接环的壁厚在1毫米到5毫米的范围内。
  13. 根据权利要求1所述的继电器，其特征在于，所述继电器还包括沿周向设置的磁铁。
  14. 根据权利要求1所述的继电器，其特征在于，所述机壳包括：
    陶瓷壳体，所述陶瓷壳体的底部敞开；
    托板，所述托板设在所述陶瓷壳体下面以封闭所述陶瓷壳体底部；
    连接台，所述连接台分别与所述陶瓷壳体和所述托板相连。
  15. 根据权利要求1所述的继电器，其特征在于，所述机壳内填充有氢气或氦气。
  16. 根据权利要求1所述的继电器，其特征在于，所述驱动装置包括：
    推动杆，所述推动杆的上端与所述底板相连且下端向下伸出所述机壳，所述推动杆的上端穿过所述底板并连接有卡簧和垫片，所述卡簧卡在所述推动杆上，所述垫片位于所述卡簧和所述连接部之间；
    缓冲弹簧，所述缓冲弹簧套在所述推动杆的外侧，所述缓冲弹簧的上端抵在所述底板上，且所述缓冲弹簧的下端抵在所述推动杆或所述机壳的底壁上。
  17. 根据权利要求15所述的继电器，其特征在于，所述推动杆上端的外周套设有间隔开所述推动杆和所述底板的绝缘护套，所述缓冲弹簧的上端抵在所述绝缘护套上。
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JP2019517715A (ja) 2019-06-24
CN107452550B (zh) 2019-07-26
CN107452550A (zh) 2017-12-08
KR20180132920A (ko) 2018-12-12
US20200321178A1 (en) 2020-10-08
EP3454354A1 (en) 2019-03-13
EP3454354A4 (en) 2019-05-01

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