EP3608938B1 - Magnetverriegelungsrelais mit widerstandsfähigkeit gegen kurzschlussstrom - Google Patents

Magnetverriegelungsrelais mit widerstandsfähigkeit gegen kurzschlussstrom Download PDF

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Publication number
EP3608938B1
EP3608938B1 EP18777975.6A EP18777975A EP3608938B1 EP 3608938 B1 EP3608938 B1 EP 3608938B1 EP 18777975 A EP18777975 A EP 18777975A EP 3608938 B1 EP3608938 B1 EP 3608938B1
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EP
European Patent Office
Prior art keywords
moving spring
bent portion
piece
spring piece
moving
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.)
Active
Application number
EP18777975.6A
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English (en)
French (fr)
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EP3608938A1 (de
EP3608938A4 (de
Inventor
Shuming ZHONG
Wenguang DAI
Zengguang ZHENG
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.)
Xiamen Hongfa Electric Power Controls Co Ltd
Original Assignee
Xiamen Hongfa Electric Power Controls Co Ltd
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Publication date
Application filed by Xiamen Hongfa Electric Power Controls Co Ltd filed Critical Xiamen Hongfa Electric Power Controls Co Ltd
Priority to PL18777975T priority Critical patent/PL3608938T3/pl
Publication of EP3608938A1 publication Critical patent/EP3608938A1/de
Publication of EP3608938A4 publication Critical patent/EP3608938A4/de
Application granted granted Critical
Publication of EP3608938B1 publication Critical patent/EP3608938B1/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H01H1/28—Assembly of three or more contact-supporting spring blades
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Definitions

  • the present disclosure relates to the field of relay technology, and more particularly, to a magnetic latching relay capable of resisting a short-circuit current.
  • the structure of the existing magnetic latching relay is composed of a magnetic circuit system, a contact system, a push mechanism and a base.
  • the magnetic circuit system generally consists of two substantially symmetrical magnetic circuits, including a stationary magnetizer component, a movable magnetizer component and a coil.
  • the contact system includes a moving spring portion, a stationary spring portion, and the push mechanism is generally carried by the push block.
  • the main application area of the magnetic latching relay is power metering.
  • the main functions are switching and metering.
  • the world's major power companies, meter companies have introduced relevant standards or cited industry standards to regulate the ability of magnetic latching relays in electric energy meter to resist a short-circuit current, which improving the operating safety of smart meters.
  • the magnetic latching relay is required to have the function of withstanding and turning on the short-circuit current. According to the operating characteristics of the power grid and based on the consideration of personal and equipment safety, there are three working conditions for magnetic latching relay to resist the short-circuit, details as follow:
  • safety withstand short-circuit current of IEC62055-31 standard UC2 grade is 4.5KA, which is 1.8 times of "function withstand short-circuit current” or “function turning on short-circuit current”.
  • the UC3 grade "safety withstand short-circuit current” is 6KA, which is twice as much as the "function withstand short-circuit current” or "function making short-circuit current”.
  • the ANSI C12.1 standard 200A rated current level "safety withstand short circuit current” peak is 24KA, which is 3.4 times of the "function withstand short circuit current” whose peak is 7KA
  • the existing magnetic latching relay utilizes the principle of Lorentz force in structural design, and the electromagnetic force generated by the one times short-circuit current on the movable spring piece (moving spring piece) to resist the electric repulsion generated by the short-circuit current between the moving and stationary contacts.
  • the magnitude of the short-circuit current is closely related to the distance between the two spring pieces.
  • the effect of resisting the short-circuit current is closely related to the amount of spring piece deformation (rigidity).
  • safety withstand short-circuit current is quite different from “function withstand short-circuit current” or “function turning on short-circuit current”
  • design schemes that meet the "safety withstand short-circuit current” are not necessarily compatible with “function withstand short-circuit current” or “function turning on short-circuit current” and vice versa.
  • design schemes that meet the UC3 standard may not be necessarily backward compatible with the UC2 standard.
  • the anti-short circuit current structure of the first type of magnetic latching relay is "the electromagnetic force generated when the moving spring lead-out piece and the moving spring piece are opposite in direction of current is used to resist the electric power generated when the moving and stationary contacts pass a large current".
  • the anti-short circuit current structure of the second type of magnetic latching relay is "using the electromagnetic force generated by the same current direction in the parallel circuit to increase the pressure between the moving and stationary contacts and to achieve the function of resisting the short circuit current".
  • One of the schemes for resisting the short-circuit current structure is disclosed as in Chinese patent application CN102776444 A , , the two sets of moving springs are designed in parallel, and the current same direction attracting principle is used to increase the contact pressure of the contacts.
  • the moving spring piece has a short effective length and a large reaction force.
  • the distance between the two sets of moving spring portions is smaller at a position away from the contact and at the position near the contact is larger, which resulting in a smaller electromagnetic attraction at the contact position, and having the disadvantage of uneven electromagnetic attraction distribution.
  • a bending is placed at a position close to the contact, a structure similar to the seesaw is caused, and instead, the spring piece at the position of the contact is easily turned outward, and the pressure of the contact is reduced.
  • the second scheme for resisting the short-circuit current structure is disclosed as in Chinese patent application CN103493166 A , the two sets of moving springs will also designed in parallel, the current same direction attracting principle is used to increase the contact pressure of the contacts.
  • the shortcomings of this structure are: The effective length of the moving spring piece is short, the reaction force is large, and the distance between the two sets of moving spring portions is large due to the spacing of the moving and stationary contacts, which resulting in less electromagnetic attraction.
  • the spring piece of this structure has small elasticity and a small pressure on the contacts.
  • the publication WO 2013/186799 A1 discloses a magnetic latching relay comprising two sets of moving spring portions, comprising a moving spring piece, a moving contact and a stationary contact.
  • the moving contact is connected to one end of the moving spring piece, wherein two moving contacts of the moving spring portion respectively correspond to two stationary contacts to form a parallel circuit structure when the moving and stationary contacts are in contact and wherein each of the two moving spring pieces is provided with a first bent portion which is convex on one side of the thickness and concave on the other side.
  • One object of the present disclosure is to overcome the deficiencies of the prior art and to provide a magnetic latching relay capable of resisting a short-circuit current. It is based on increasing the pressure between the moving and stationary contacts by using the electromagnetism suction generated by the same current direction in the parallel circuit. Through improving the structure of the contact portion, the electromagnetic suction between the two sets of moving spring portions can be increased, thereby the contact pressure between the contacts can be effectively increased to resist the short-circuit current.
  • a magnetic latching relay capable of resisting short-circuit current, comprising:
  • Each of the two moving spring pieces is provided with a second bent portion which is convex on one side of the thickness and concave on the other side, and the protruding directions of the two second bent portions are the same, the bending of the second bent portion of the other moving spring piece is smaller than the bending of the second bent portion of one moving spring piece, such that the protrusion of the second bent portion of the other moving spring piece can fit into the recess of the second bent portion of one moving spring piece to reduce the distance between the two moving spring pieces and increase the effective length of each moving spring pieces.
  • the first bent portion and the second bent portion are all arc shapes.
  • the shape of the first bent portions and the second bent portions of the two moving spring pieces may substantially be U-shaped, n-shaped or C-shaped, and the center line of the opening of the U-shaped, n-type or C-shaped of the bent portion is substantially perpendicular to a flat spring piece of the moving spring piece.
  • the distance from a flat spring piece between the first bent portion and the second bent portion of one moving spring piece to a flat spring piece between the first bent portion and the second bent portion of the other moving spring piece is smaller than the distance between the flat spring pieces at the contact position of the two moving spring pieces.
  • the distance from the flat spring piece between the first bent portion and the second bent portion of one moving spring piece to the flat spring piece between the first bent portion and the second bent portion of the other moving spring piece is roughly equal to the distance between the two first bent portions and the second bent portions.
  • the stationary contact is connected at the junction of the other end of the moving spring piece and one end of the moving spring lead-out piece.
  • the protruding direction of the first bent portion is opposite to the protruding direction of the second bent portion.
  • the first bent portion and the second bent portion are respectively located at both ends of the moving spring piece.
  • the moving spring piece and the moving spring lead-out piece are two separate parts.
  • the moving spring piece and the moving spring lead-out piece are an integrated structure.
  • the moving spring piece is formed by a single spring piece.
  • the moving spring piece is composed of two or more spring pieces stacked in the thickness direction.
  • the lengths and shapes of the moving spring pieces of the two sets of moving spring portions having the first bent portions and the second bent portions are completely the same.
  • the moving spring lead-out pieces of the contact portion are inserted on the base, and the two moving spring lead-out pieces are respectively located on both sides of the base, one of the moving spring lead-out pieces is a current lead-in end, and the other moving spring lead-out piece is a current lead-out end; each end of the two moving spring lead-out pieces is respectively fitted in the base, and the other ends of the two moving spring lead-out pieces respectively extend outside of the base.
  • the two moving spring lead-out pieces are respectively provided with a positioning protrusion for matching with the base in the thickness direction, and the base is provided with a slot for matching with the positioning protrusion of the corresponding moving spring lead-out piece.
  • a positioning tongue piece extends outwardly from one end of each of the moving spring lead-out piece, the positioning tongue piece inclines at an angle with respect to the moving spring lead-out piece to avoid the bent portion of the moving spring piece.
  • the thickness of the positioning tongue piece is smaller than the thickness of the moving spring lead-out piece.
  • the vertical distance of the extension line of the opposite sides of the two moving spring lead-out pieces is 4.6 mm, and the tolerance range is -0.1 to +0.5 mm; in the two moving spring lead-out pieces, the size of the opposite side of one moving spring lead-out piece closer to a parallel side wall of the base to the outer surface of the parallel side wall is 5.1 mm, and the tolerance range is -0.5 to +0.5mm.
  • the rotary magnetic circuit portion respectively matches with the ends of the two moving spring pieces through the push block, such that the two moving contacts are respectively brought into contact with the two stationary contacts when the rotary magnetic circuit portion rotates towards to one side, and the two moving contacts are respectively separated from the two stationary contacts when the rotary magnetic circuit portion rotates toward to the other side.
  • a magnetic latching relay capable of resisting a short-circuit current of the present disclosure is not limited to the embodiments.
  • a magnetic latching relay capable of resisting a short-circuit current includes a contact portion.
  • the contact portion is composed of two sets of moving spring portions 1, 2 which are substantially parallel to each other.
  • the moving spring portion 1 includes a moving spring piece 11, a moving contact 12, a moving spring lead-out piece 13 and a stationary contact 14.
  • the moving spring portion 2 includes a moving spring piece 21, a moving contact 22, a moving spring lead-out piece 23 and a stationary contact 24.
  • the moving contact 12 is connected to one end of the moving spring piece 11, the other end of the moving spring piece 11 is connected to one end of the moving spring lead-out piece 13, and the stationary contact 14 is connected to one end of the moving spring lead-out piece 13.
  • the stationary contact 14 is connected at the junction of the other end of the moving spring piece 11 and one end of the moving spring lead-out piece 13.
  • the moving contact 22 is connected to one end of the moving spring piece 21, and the other end of the moving spring piece 21 is connected to one end of the moving spring lead-out piece 23,
  • the stationary contact 24 is connected to one end of the moving spring lead-out piece 23, and the stationary contact 24 is connected at the junction of the other end of the moving spring piece 21 and one end of the moving spring lead-out piece 23.
  • the two moving contacts of the moving spring portion correspond to the two stationary contacts respectively.
  • each of the two moving springs is provided with a first bent portion which is convex on one side of the thickness and concave on the other side.
  • the moving spring piece 11 is provided with a first bent portion 111, and the first bent portion 111 is in an arc shape.
  • the moving spring piece 21 is provided with a first bent portion 211, and the first bent portion 211 has an arc shape.
  • the first bent portion 111 of the moving spring piece 11 and the first bent portion 211 of the moving spring piece 21 have the same protruding direction.
  • the bending of the first bent portion 211 of the moving spring piece 21 is smaller than the bending of the first bent portion 111 of the other moving spring piece 11, such that the protrusion of the first bent portion 211 of one moving spring piece 21 can fit into the recess of the first bent portion 111 of the other moving spring piece 11.
  • the two moving spring pieces are each further provided with a second bent portion which is convex on one side of the thickness and concave on the other side. That is, the moving spring piece 11 is provided with a second bent portion 112, and the second bent portion 112 has an arc shape; the moving spring piece 21 is provided with a second bent portion 212, and the second bending 212 has an arc shape.
  • the second bent portion 112 of the moving spring piece 11 and the second bent portion 212 of the moving spring piece 21 have the same protruding direction.
  • the bending of the second bent portion 112 of the moving spring piece 11 is smaller than the bending of the second bent portion 212 of one moving spring piece 21, such that the protrusion of the second bent portion 112 of the other moving spring piece 11 can fit into the recess of the second bent portion 212 of one moving spring piece 21.
  • the protruding direction of the first bent portion is opposite to the protruding direction of the second bent portion.
  • the protruding direction of the first bent portion 111 is opposite to the protruding direction of the second bent portion 112.
  • the protruding direction of the first bent portion 211 is opposite to the protruding direction of the second bent portion 212.
  • the first bent portion and the second bent portion are located at both ends of the moving spring piece respectively. Since the protrusion of the first bent portion 211 of the moving spring piece 21 fits into the recess of the first bent portion 111 of the moving spring piece 11, and the protrusion of the second bent portion 112 of the moving spring piece 11 fits into the recess of the second bent portion 212 of the moving spring piece 21 to reduce the distance between the two moving spring pieces and increase the effective length of each moving spring piece.
  • the shape of the first bent portion and the second bent portion of the two moving spring pieces may substantially be U-shaped, n-shaped or C-shaped, and the center line of the opening of U-shaped, n-type or C-shaped of the bent portion is substantially perpendicular to the flat spring piece of the moving spring piece.
  • the shape of the U-shaped, n-shaped or C-shaped all conforms to concave on one side of the thickness and concave on the other side.
  • the distance from the flat spring piece between the first bent portion and the second bent portion of one moving spring piece to the flat spring piece between the first bent portion and the second bent portion of the other moving spring piece is smaller than the distance between the flat spring pieces at the contact position of the two moving spring pieces.
  • a portion between the first bent portion 111 and the second bent portion 112 of the moving spring piece 11 is a flat spring piece 113
  • a portion between the first bent portion 211 and the second bent portion 212 of the moving spring piece 21 is a flat spring piece 213.
  • the distance from the flat spring piece 113 of the moving spring piece 11 to the flat spring piece 213 of the moving spring piece 21 is smaller than the distance between the flat spring pieces at the contact position of the two moving spring pieces (For example, the distance between the spring piece at the moving contact 12 and the spring piece at the stationary contact 24, and may also be the distance between the spring piece at the moving contact 22 and the spring piece at the stationary contact 14).
  • the distance from the flat spring piece between the first bent portion and the second bent portion of one moving spring piece to the flat spring piece between the first bent portion and the second bent portion of the other moving spring piece is substantially equal to the distance between the two first bent portions and the distance between the two second bent portions. That is to say, the distance from the first bent portion 111 of the moving spring piece 11 to the first bent portion 211 of the moving spring piece 21, the distance from the second bent portion 112 of the moving spring piece 11 to the second bent portion 212 of the moving spring piece 21, and the distance from the flat spring piece 113 of the moving spring 11 to the flat spring piece 213 of the moving spring piece 21 are roughly equal to each other.
  • the moving spring piece 11 and the moving spring lead-out piece 13 are two separate parts.
  • the moving spring piece 21 and the moving spring lead-out piece 23 are also two separate parts.
  • the moving spring piece and the moving spring lead-out piece can also be an integrated structure.
  • the moving spring piece 11 is formed by stacking three spring pieces in the thickness direction
  • the moving spring piece 21 is also formed by stacking three spring pieces in the thickness direction.
  • the moving spring piece can also be formed by a single spring piece.
  • the lengths and shapes of the moving spring pieces 11, 12 of the two sets of moving spring portions having the first bent portion and the second bent portion arc completely the same. That is to say, after the moving spring piece 11 and the moving spring piece 12 are assembled, the matching shape of the first bent portion 111 of the moving spring piece 11 and the first bent portion 211 of the moving spring piece 21 as well as the matching shape of the second bent portion 212 of the moving spring piece 21 and the second bent portion 112 of the moving spring piece 11 are in a central symmetry structure.
  • the present disclosure includes a base 3, the moving spring lead-out pieces 13, 23 of the contact portion are respectively inserted on the base 3, and the two moving spring lead-out pieces 13, 23 are respectively located on both sides of the base 3.
  • one of the moving spring lead-out pieces is a current lead-in end
  • the other moving spring lead-out piece is a current lead-out end.
  • Each end of the moving spring lead-out pieces 13, 23 fits in the base 3, and each other end of the moving spring lead-out pieces 13, 23 extends outside the base 3.
  • the moving spring lead-out piece 13 is provided with a positioning protrusion 131 for matching with the base in the thickness direction.
  • the positioning protrusion 131 locates on the opposite side corresponding to the fixed stationary contact 14 and locates closer to the outside than the stationary contact 14 in position.
  • the base 3 is provided with a slot 31 for matching with the positioning protrusion 131 of the moving spring lead-out piece 13.
  • the moving spring lead-out piece 23 is provided with a positioning protrusion 231 for matching with the base in the thickness direction.
  • the positioning protrusion 231 locates on the same side corresponding to the fixed stationary contact 24 and locates closer to the outside than the stationary contact 24 in position.
  • the base 3 is also provided with a slot 32 for matching with the positioning protrusion 231 of the moving spring lead-out piece 23.
  • a positioning tongue piece 132 extends outwardly from one end of the moving spring lead-out piece 13.
  • the positioning tongue piece 132 inclines at an angle with respect to the moving spring lead-out piece 13 to avoid the bent portion 111 of the moving spring piece 11.
  • the thickness of the positioning tongue piece 132 is smaller than the thickness of the moving spring lead-out piece 13.
  • the base 3 is provided with a slot 33 for matching with the positioning tongue piece 132 of the moving spring lead-out piece 13.
  • a positioning tongue piece 232 extends outwardly from one end of the moving spring lead-out piece 23.
  • the positioning tongue piece 232 inclines at an angle with respect to the moving spring lead-out piece 23 to avoid the bent portion 211 of the moving spring piece 21.
  • the thickness of the positioning tongue piece 232 is smaller than the thickness of the moving spring lead-out piece 23.
  • the base 3 is provided with a slot 34 for matching with the positioning tongue piece 232 of the moving spring lead-out piece 23.
  • the vertical distance of the extension lines of the opposite sides of the two moving spring lead-out pieces is 4.6 mm, and the tolerance range is -0.1 to +0.5 mm. That is, the vertical distance of the extension line of the opposite side 133 of the moving spring lead-out piece 13 to the opposite side 233 of the moving spring lead-out piece 23 is 4.6 mm (may also be the vertical distance from the extension line of the opposite side 233 of the moving spring lead-out piece 23 to the opposite side 133 of the moving spring lead-out piece 13, or the vertical distance from the extension line of the opposite side 133 of the moving spring lead-out piece 13 to the extension line of the opposite side 233 of the moving spring lead-out piece 23).
  • the size of 4.6mm defines the distance between the two moving spring lead-out pieces, and also defines the distance between the contacts.
  • the size of the opposite side of a moving spring lead-out piece closer to the parallel side wall of the base to the outer surface of the parallel side wall is 5.1 mm, and the tolerance range is -0.5 to +0.5mm.
  • the size of the opposite side 133 of the moving spring lead-out piece 13 to the outer surface of the parallel side wall 35 is 5.1 mm, and the tolerance range is -0.5 to +0.5 mm.
  • the size of 5.1 mm reflects the distance of the moving spring lead-out piece 13 to one side of the base, which determines the position at which the moving spring lead-out piece 13 leads out from the base.
  • the size of 4.6mm and the size of 5.1mm can reflect the position of the other moving spring lead-out piece 23 leaded out from the base, thus determining the main physical dimensions of the relay.
  • the present disclosure includes a rotary magnetic circuit portion 4 and a push block 5.
  • the rotary magnetic circuit portion 4 and the push block 5 are respectively mounted in the base 3.
  • the rotary magnetic circuit portion 4 respectively matches with the ends of the two moving spring pieces 11, 21 through the push block 5, such that the two moving contacts 12, 22 are respectively brought into contact with the two stationary contacts 24, 14 when the rotary magnetic circuit portion rotates to one side, and the two moving contacts 12, 22 are respectively separated from the two stationary contacts 24, 14 when the rotary magnetic circuit portion rotates toward the other side.
  • a magnetic latching relay capable of resisting short-circuit current adopts that each of the two moving spring pieces 11 and 21 is provided with a first bent portion 111, 211 which is convex on one side of the thickness and concave on the other side.
  • the first bent portions 111 and 211 are in arc shapes, and the protruding directions of the two first bent portions 111 and 211 are the same.
  • the bending of the first bent portion 211 of one moving spring piece 21 is smaller than the bending of the first bent portion 111 of the other moving spring piece 11, such that the protrusion of the first bent portion 211 of the one moving spring piece 21 can fits into the recess of the first bent portion 111 of the other moving spring piece 11.
  • the effective length of each of the moving spring pieces is increased while reducing the distance between the two moving spring pieces.
  • the spring piece bending is used to increase the elasticity of the moving spring piece, thereby increasing the contact pressure;
  • the special structure of the bent portion (the convex fits in the recess) is used to short the distance between the two moving spring pieces, thereby increasing the suction force.
  • the effective length of the moving spring piece is longer, thereby further increasing the suction force and making the suction force larger.
  • a magnetic latching relay capable of resisting short-circuit current adopts that the first bent portions 111, 211 and the second bent portions 112, 212 are respectively disposed in the two moving spring pieces 11, 21, and the first bent portions 111, 211 and the second bent portions 112, 212 are all arc shapes.
  • the first bent portion and the second bent portion have the same convex direction in the two moving spring pieces, while in the same moving spring, the protruding direction of the first bent portion is opposite to the protruding direction of the second bent portion.
  • the elasticity of the moving spring piece can be greatly increased, thereby greatly increasing the contact pressure, such that the effective length of the moving spring piece is further increased.
  • the suction force is further increased, such that the suction force is increased larger.
  • the distance between the two bent positions of the two moving spring pieces can be reduced, but also the distance between the two bent portions of the two moving spring pieces can be reduced, thereby further increasing the suction force.
  • a magnetic latching relay capable of resisting a short-circuit current adopts that a first bent portion and a second bent portion are respectively disposed in the two moving spring pieces and the length and shape of the two sets of moving spring portions having the first bent portion and the second bent portion are completely the same.
  • the two sets of moving spring pieces have the same length and the same shape, which is convenient for manufacturing and ensures the consistency of the performance of the two sets of moving springs.
  • a magnetic latching relay capable of resisting short-circuit current adopts positioning protrusions 131 and 231 for matching with the base are disposed in the thickness direction of the moving spring lead-out pieces 13 and 23.
  • Positioning tongue pieces 132, 232 extends outwardly at one end of the moving spring lead-out pieces 13, 23, and the positioning tongue pieces 132, 232 inclines at an angle with respect to the moving spring lead-out pieces 13, 23 to avoid the bent portion of the moving spring piece.
  • the structure of the present invention through the reasonable positioning for the moving spring lead-out piece, it avoids the disadvantages of the product function failure due to the looseness and falling off of the moving spring lead-out piece because of the unreliable positioning during the use of the product.
  • the looseness and falling off of the moving spring lead-out piece are due to the external stress of temperature and vibration shock.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Claims (15)

  1. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, mit
    einem Kontaktabschnitt, der aus zwei Sätzen von beweglichen Federabschnitten (1, 2) besteht, die im Wesentlichen parallel zueinander sind;
    wobei die beiden Sätze von beweglichen Federabschnitten (1, 2) jeweils ein bewegliches Federteil (11, 21), einen beweglichen Kontakt (12, 22), ein bewegliches Federauslaufteil (13, 23) und einen stationären Kontakt (14, 24) aufweisen; der bewegliche Kontakt (12, 22) mit einem Ende des beweglichen Federteils (11, 21) verbunden ist, das andere Ende des beweglichen Federteils (11, 21) mit einem Ende des beweglichen Federauslaufteils (13, 23) verbunden ist, und der stationäre Kontakt (14, 24) mit einem Ende des beweglichen Federauslaufteils (13, 23) verbunden ist; zwei bewegliche Kontakte (12, 22) des beweglichen Federabschnitts (1, 2) jeweils zwei stationären Kontakten (14, 24) entsprechen, um eine parallele Schaltungsstruktur zu bilden, wenn die beweglichen und die stationären Kontakte (14, 24) in Kontakt stehen;
    wobei jedes der beiden beweglichen Federteile (11, 21) mit einem ersten gebogenen Abschnitt (111, 211) versehen ist, der auf einer Seite der Dicke konvex und auf der anderen Seite konkav ist, und die vorstehenden Richtungen der beiden ersten gebogenen Abschnitte (111, 211) gleich sind, wobei die Biegung des ersten gebogenen Abschnitts (111, 211) des einen beweglichen Federteils (11, 21) kleiner ist als die Biegung des ersten gebogenen Abschnitts (111, 211) des anderen beweglichen Federteils (11, 21), so dass ein Vorsprung des ersten gebogenen Abschnitts (111, 211) des einen beweglichen Federteils (11, 21) in eine Aussparung des ersten gebogenen Abschnitts (111, 211) des anderen beweglichen Federteils (11, 21) eingepasst werden kann, wodurch die effektive Länge jedes beweglichen Federteils (11, 21) vergrößert wird, während der Abstand zwischen den beiden beweglichen Federteilen (11, 21) verringert wird.
  2. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 1, wobei jedes der beiden beweglichen Federteile (11, 21) mit einem zweiten gebogenen Abschnitt (112, 212) versehen ist, der auf einer Seite der Dicke konvex und auf der anderen Seite konkav ist, und die vorstehenden Richtungen der beiden zweiten gebogenen Abschnitte (112, 212) gleich sind, wobei die Biegung des zweiten gebogenen Abschnitts (112, 212) des anderen beweglichen Federteils (11, 21) kleiner ist als die Biegung des zweiten gebogenen Abschnitts (112, 212) des einen beweglichen Federteils (11, 21), so dass ein Vorsprung des zweiten gebogenen Abschnitts (112, 212) des anderen beweglichen Federteils (11, 21) in eine Ausnehmung des zweiten gebogenen Abschnitts (112, 212) des einen beweglichen Federteils (11, 21) eingepasst werden kann, um den Abstand zwischen den beiden beweglichen Federteilen (11, 21) zu verringern und die effektive Länge jedes beweglichen Federteils (11, 21) zu vergrößern.
  3. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 2, wobei der erste gebogene Abschnitt (111, 211) und der zweite gebogene Abschnitt (112, 212) alle bogenförmig sind.
  4. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, gemäß Anspruch 2, wobei die Form der ersten gebogenen Abschnitte (111, 211) und der zweiten gebogenen Abschnitte (112, 212) der beiden beweglichen Federteile (11, 21) im Wesentlichen U-förmig, n-förmig oder C-förmig sein kann, und die Mittellinie einer Öffnung des U-förmigen, n-förmigen oder C-förmigen gebogenen Abschnitts im Wesentlichen senkrecht zu einem flachen Federteil (113, 213) des beweglichen Federteils (11, 21) ist.
  5. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, gemäß Anspruch 2, wobei in den beiden beweglichen Federteilen (11, 21) der Abstand von einem flachen Federteil (113, 213) zwischen dem ersten gebogenen Abschnitt (111, 211) und dem zweiten gebogenen Abschnitt (112, 212) eines beweglichen Federteils (11, 21) zu einem flachen Federteil (113, 213) zwischen dem ersten gebogenen Abschnitt (111, 211) und dem zweiten gebogenen Abschnitt (112, 212) des anderen beweglichen Federteils (11, 21) kleiner ist als der Abstand zwischen den flachen Federteilen (113, 213) an einer Kontaktposition der beiden beweglichen Federteile (11, 21).
  6. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 5, wobei der Abstand von dem flachen Federteil (113, 213) zwischen dem ersten gebogenen Abschnitt (111, 211) und dem zweiten gebogenen Abschnitt (112, 212) des einen beweglichen Federteils (11, 21) zu dem flachen Federteil (113, 213) zwischen dem ersten gebogenen Abschnitt (111, 211) und dem zweiten gebogenen Abschnitt (112, 212) des anderen beweglichen Federteils (11, 21) ungefähr gleich dem Abstand zwischen den beiden ersten gebogenen Abschnitten (111, 211) und den zweiten gebogenen Abschnitten (112, 212) ist.
  7. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, gemäß Anspruch 1, wobei in demselben Satz von beweglichen Federteilen (1, 2) der stationäre Kontakt (14, 24) an einer Verbindung des anderen Endes des beweglichen Federteils (11, 21) und eines Endes des beweglichen Federauslaufteils (13, 23) angeschlossen ist.
  8. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, gemäß Anspruch 2, wobei in demselben beweglichen Federteil (11, 21) die vorstehende Richtung des ersten gebogenen Abschnitts (111, 211) der vorstehenden Richtung des zweiten gebogenen Abschnitts (112, 212) entgegengesetzt ist.
  9. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 2, wobei in demselben beweglichen Federteil (11, 21) der erste gebogene Abschnitt (111, 211) und der zweite gebogene Abschnitt (112, 212) jeweils an beiden Enden des beweglichen Federteils (11, 21) angeordnet sind.
  10. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 1 oder 2, wobei das bewegliche Federteil (11, 21) und das bewegliche Federauslaufteil (13, 23) zwei separate Teile sind.
  11. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 1 oder 2, wobei das bewegliche Federteil (11, 21) und das bewegliche Federauslaufteil (13, 23) eine integrierte Struktur bilden.
  12. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, gemäß Anspruch 1 oder 2, wobei das bewegliche Federteil (11, 21) durch ein einzelnes Federteil gebildet ist.
  13. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 1 oder 2, wobei das bewegliche Federteil (11, 21) aus zwei oder mehr in Dickenrichtung gestapelten Federteilen besteht.
  14. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, nach Anspruch 2 oder 3 oder 8, wobei die Längen und die Formen der beweglichen Federteile (11, 21) der beiden Sätze von beweglichen Federabschnitten (1, 2) mit den ersten gebogenen Abschnitten (111, 211) und den zweiten gebogenen Abschnitten (112, 212) vollständig gleich sind.
  15. Magnetisches Halterelais, das in der Lage ist, einem Kurzschlussstrom zu widerstehen, gemäß Anspruch 2, wobei es ferner einen drehbaren magnetischen Schaltungsabschnitt und einen Druckblock aufweist, wobei der drehbare magnetische Schaltungsabschnitt jeweils mit den Enden der beiden beweglichen Federteile (11, 21) durch den Druckblock derart zusammenpasst, dass die beiden beweglichen Kontakte (12, 22) jeweils in Kontakt mit den beiden stationären Kontakten (14, 24) gebracht werden, wenn sich der drehbare magnetische Schaltungsabschnitt zu einer Seite hin dreht, und die beiden beweglichen Kontakte (12, 22) jeweils von den beiden stationären Kontakten (14, 24) getrennt werden, wenn sich der drehbare magnetische Schaltungsabschnitt zur anderen Seite hin dreht.
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BR112019020619A2 (pt) 2020-04-22
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PL3608938T3 (pl) 2022-05-30
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