Large-gap magnetic latching relay
By designing a large gap structure and U-shaped magnetic permeable plate in the magnetic holding relay, the problems of automatic suction and gap breakdown at high voltages are solved, safer and more stable operation is achieved, and the volume is reduced through the compact structure.
Patent Information
- Application Number
- CN202510132015.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2025-05-09
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The gap behind the dynamic contact and static contact ports of existing magnetic holding relays is small, which is easy to automatically absorb and close at high voltages or break down the gap. It is unsafe to use, and the structure is not compact, resulting in a large volume and occupy more space.
A large gap magnetic relay is designed. By fixing the movable arm to the rotatable magnetic steel assembly, the movable wall drives the movable strip to move, so that the movable strip can drive the movable conductive assembly to move a larger stroke, so that there is a large gap when the static contacts and the movable contacts are separated, making it safer to use. At the same time, the setting of the U-shaped magnetic permeable plate ensures that the dynamic contacts and the static contacts remain in contact during instantaneous short-circuit current, ensuring the operation stability of the relay.
It realizes safe separation between dynamic contacts and static contacts under high voltage conditions, avoids automatic suction and gap breakdown, ensures the safety of use and operation stability of the relay, and reduces the volume of the relay through the compact structure and takes up less space.
Smart Images
Figure CN119965043A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of relays, in particular to the technical field of large-gap magnetic latching relays. Background Art
[0002] In recent years, with the rapid development of the electronic information industry, relays as basic components have been widely used in the fields of automation control such as home appliances, communications, automobiles, instruments and meters, machinery and equipment, aerospace, etc. Recent statistics show that among electronic component products, magnetic latching relays have become the largest product in terms of annual sales. The existing magnetic latching relays have a small gap behind the moving contact and the static contact ports. When the voltage is high, they are prone to automatic attraction or gap breakdown, which is not safe to use. At the same time, the existing magnetic latching relays are not compact enough, resulting in a large size and occupying more space. Summary of the invention
[0003] The purpose of the present invention is to solve the problems in the prior art and to propose a large gap magnetic latching relay, which can make the moving contact and the static contact of the magnetic latching relay have a larger gap when they are separated, and the magnetic latching relay has a compact structure, which effectively reduces the volume of the magnetic latching relay.
[0004] To achieve the above-mentioned purpose, the present invention proposes a large-gap magnetic latching relay, comprising a shell, a coil, a magnetic steel assembly, a movable arm, a movable bar, a first conductive assembly, a second conductive assembly, and a movable conductive assembly. The first conductive assembly and the second conductive assembly are fixed on the shell, and the first conductive assembly and the second conductive assembly are located on the same side of the shell. Parts of the first conductive assembly and the second conductive assembly extend into the shell. A horizontally arranged coil is provided inside the shell, and magnetic conductive sheets are fixed at both ends of the coil. The ends of the magnetic conductive sheets are bent to form a second limit block, and the second limit block is located on the sides of the magnetic conductive sheets that are close to each other. A magnetic steel assembly is installed inside the shell, and the magnetic steel assembly is located above the coil. The magnetic steel assembly consists of a main body block, a magnetic steel sheet, and a rotating shaft. Rotating shafts are fixed on both sides of the main body block, and the two rotating shafts are located on the same central axis. The central axis of the rotating shaft is perpendicular to the central axis of the coil, and the two rotating shafts are rotatably installed inside the shell. Two magnetic steel sheets distributed up and down are passed through the main body block. , the two ends of the magnetic steel sheet are respectively exposed at the opposite sides of the main block, and the magnetic steel sheet is exposed at the outer part of the main block to form a first limit block. Two first limit blocks are provided on both sides of the main block close to the magnetic conductive sheet, and the two first limit blocks located on the same side of the main block are the N pole and the S pole of the magnetic steel sheet respectively. A second limit block is provided between the two first limit blocks located on the same side of the main block. A movable arm is fixed to the bottom of the magnetic steel assembly, and the movable arm is located between the magnetic steel assembly and the coil. A limit assembly is fixed inside the shell, and the limit assembly forms a limit channel parallel to the central axis of the coil. An active bar adapted to the limit channel is provided inside the shell, and the active bar passes through the limit channel. A avoidance area for avoiding the active bar is provided on the magnetic conductive sheet, and a first connecting portion and a second connecting portion are respectively provided at both ends of the active bar, and a socket is provided on the first connecting portion, and the active arm is inserted into the socket. A movable conductive component for cooperating with the first conductive component and the second conductive component is fixed to the second connecting portion.
[0005] Preferably, the first conductive component and the second conductive component are each provided with two static contacts, the static contacts are located inside the shell, the movable conductive component comprises an elastic sheet, a conductive strip, a movable contact, and a limit spring sheet, there are two conductive strips, each conductive strip is fixed with two movable contacts, the two movable contacts are located on the same side of the conductive strip, each movable contact corresponds to a static contact, the two movable contacts on the same conductive strip respectively correspond to the static contacts on the first conductive component and the second conductive component, the elastic sheet is composed of an elastic strip and a connecting strip, there are two elastic strips, and each elastic strip Corresponding to a conductive strip, both ends of the elastic strip are fixed to the corresponding conductive strip, the elastic strip protrudes toward the side away from the conductive strip, the middle parts of the two elastic strips are connected by a connecting strip, the first connecting part is fixed to the connecting strip or to the two elastic strips, two limiting rods are fixed inside the shell, the limiting rods are located on the side of the conductive strip away from the static contact, both ends of the limiting spring sheet are provided with guide waist holes, the two guide waist holes correspond to the two limiting rods one by one, the limiting rod passes through the corresponding guide waist holes, the limiting spring sheet is bent toward the side close to the conductive strip, and the limiting spring sheet is fixed to a conductive strip.
[0006] Preferably, two side baffles arranged opposite to each other are provided on the first connecting portion, and the two conductive strips are located between the two side baffles.
[0007] Preferably, the side baffle is a non-magnetic stainless steel plate.
[0008] Preferably, a U-shaped magnetic conductive plate is fixed on the conductive strip, the open end of the U-shaped magnetic conductive plate is located on the side where the moving contact of the conductive strip is located, the U-shaped magnetic conductive plate surrounds the conductive strip, and an iron block matching the U-shaped magnetic conductive plate is fixed inside the outer shell, and the U-shaped magnetic conductive plate and the iron block are attracted together when the static contact and the moving contact are attracted together.
[0009] The elastic strip is composed of a first strip body, an S-shaped connecting piece, and a second strip body. Both ends of the first strip body are connected to the S-shaped connecting pieces, the end of the S-shaped connecting piece is connected to the second strip body, the second strip body is connected to the conductive strip, and the two second strip bodies are located on the same side of the first strip body. When the elastic sheet is not under pressure, the first strip body and the second strip body are parallel to each other, and the two ends of the connecting strip are respectively connected to the middle parts of the two first strip bodies.
[0010] Preferably, a U-shaped spring piece is fixed inside the housing, and when the second moving contact and the static contact are not in the attracted state, the U-shaped spring piece abuts against the second connecting portion and is in a compressed state.
[0011] The beneficial effects of the present invention are as follows: the present invention fixes the movable arm on the rotatable magnetic steel component, and the movable wall drives the movable bar to move, so that the movable bar can drive the movable conductive component to move a larger stroke, so that the static contact and the moving contact can have a larger gap when in a separated state, and the use is safer; the setting of the U-shaped magnetic conductive plate can continue to keep the moving contact and the static contact attracted when a momentary short-circuit current occurs in the circuit due to various reasons, thereby ensuring the operating stability of the relay.
[0012] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a front view of the large gap magnetic latching relay of the present invention in the closed state; Figure 2 It is a front cross-sectional view of the separated state of the large gap magnetic latching relay of the present invention; Figure 3 It is a combined diagram of the movable conductive component and the movable bar of the large gap magnetic latching relay of the present invention; Figure 4 Schematic diagram of the movable conductive components of the large gap magnetic latching relay of the present invention; Figure 5 It is a partial exploded view of the large gap magnetic latching relay of the present invention; Figure 6 It is a schematic diagram of the magnetic steel assembly of the large gap magnetic latching relay of the present invention; Figure 7 This is a three-dimensional diagram of the elastic sheet of the fourth embodiment of the large gap magnetic latching relay of the present invention; Figure 8 It is a front view of the elastic piece of the fourth embodiment of the large gap magnetic latching relay of the present invention.
[0014] In the figure: 1-housing, 2-coil, 3-magnetic steel component, 4-movable bar, 5-conductive bar, 6-elastic sheet, 7-limiting spring sheet, 10-static contact, 11-first conductive component, 12-second conductive component, 13-U-shaped spring sheet, 14-limiting channel, 15-limiting rod, 16-iron block, 20-magnetic, 21-second limiting block, 30-movable arm, 31-first limiting block, 35-main body, 36-rotating shaft, 37-magnetic steel sheet, 40-jack, 45-movable conductive component, 46-side baffle, 50-moving contact, 51-U-shaped magnetic plate, 61-elastic strip, 62-connecting strip, 70-guide waist hole, 611-first strip body, 612-S-shaped connecting sheet, 613-second strip body. DETAILED DESCRIPTION
[0015] Embodiment 1: See also Figure 1 , Figure 2The large-gap magnetic latching relay of the present invention comprises a housing 1, a coil 2, a magnetic steel component 3, a movable arm 30, a movable bar 4, a first conductive component 11, a second conductive component 12, and a movable conductive component 45.
[0016] A first conductive component 11 and a second conductive component 12 are fixed to the housing 1 . The first conductive component 11 and the second conductive component 12 are located on the same side of the housing 1 . Parts of the first conductive component 11 and the second conductive component 12 extend into the housing 1 .
[0017] A horizontally arranged coil 2 is provided inside the housing 1 , and magnetic conductive sheets 20 are fixed at both ends of the coil 2 . The ends of the magnetic conductive sheets 20 are bent to form second limit blocks 21 , and the second limit blocks 21 are located on the sides of the magnetic conductive sheets 20 that are close to each other.
[0018] A magnetic steel assembly 3 is installed inside the shell 1. The magnetic steel assembly 3 is located above the coil 2. The magnetic steel assembly 3 consists of a main block 35, a magnetic steel sheet 37, and a rotating shaft 36. The rotating shafts 36 are fixed on both sides of the main block 35. The rotating shafts 36 and the main block 35 are integrally injection molded. In order to reduce weight, the main block 35 is hollow inside. The two rotating shafts 36 are located on the same central axis. The central axis of the rotating shaft 36 is perpendicular to the central axis of the coil 2. The two rotating shafts 36 are rotatably installed inside the shell 1. The main block 35 is penetrated by two magnetic steel sheets 37 distributed up and down. The magnetic steel sheets The two ends of 37 are respectively exposed on the opposite sides of the main block 35, and the magnetic steel sheet 37 is exposed on the outer part of the main block 35 to form a first limit block 31. Two first limit blocks 31 are provided on both sides of the main block 35 close to the magnetic conductive sheet 20. The two first limit blocks 31 located on the same side of the main block 35 are respectively the N pole and S pole of the magnetic steel sheet 37. A second limit block 21 is provided between the two first limit blocks 31 located on the same side of the main block 35. A movable arm 30 is fixed to the bottom of the magnetic steel assembly 3. Specifically, the movable arm 30 is fixed to the bottom of the main block 35.
[0019] In order to make the relay structure more compact, the movable arm 30 is located between the magnetic steel assembly 3 and the coil 2 .
[0020] A limiting component is fixed inside the shell 1, and the limiting component forms a limiting channel 14 parallel to the central axis of the coil 2. A movable bar 4 adapted to the limiting channel 14 is provided inside the shell 1, and the movable bar 4 passes through the limiting channel 14. An avoidance area for avoiding the movable bar 4 is provided on the magnetic conductive sheet 20. A first connecting portion and a second connecting portion are respectively provided at both ends of the movable bar 4. A socket 40 is provided on the first connecting portion, and the movable arm 30 is inserted into the socket 40. A movable conductive component 45 for cooperating with the first conductive component 11 and the second conductive component 12 is fixed to the second connecting portion.
[0021] Two static contacts 10 are disposed on each of the first conductive component 11 and the second conductive component 12 . The static contacts 10 are located inside the housing 1 .
[0022] See also Figure 3 , Figure 4 , Figure 5 The movable conductive component 45 includes an elastic sheet 6, a conductive strip 5, a movable contact 50, and a limit spring sheet 7. There are two conductive strips 5, and two movable contacts 50 are fixed on each conductive strip 5. The two movable contacts 50 are located on the same side of the conductive strip 5. Each movable contact 50 corresponds to a static contact 10. The two movable contacts 50 on the same conductive strip 5 correspond to the static contacts 10 on the first conductive component 11 and the second conductive component 12, respectively.
[0023] The elastic sheet 6 is composed of an elastic strip 61 and a connecting strip 62. There are two elastic strips 61, each elastic strip 61 corresponds to a conductive strip 5, both ends of the elastic strip 61 are fixed to the corresponding conductive strip 5, the elastic strip 61 protrudes away from the conductive strip 5, the middle parts of the two elastic strips 61 are connected by a connecting strip 62, and the first connecting part is fixed to the connecting strip 62. The elastic strip 6 can apply a compressive force to the conductive strip 5 when the moving contact 50 and the static contact 10 are attracted, so that the contact force between the moving contact 50 and the static contact 10 becomes larger, and the two are not easy to separate, thereby ensuring the reliability of the attraction.
[0024] The two conductive strips 5 are independent of each other and cooperate with two elastic strips 61, so that when one conductive strip 5 is blocked by the static contact 10, it will not affect the other conductive strip 5, so that each movable contact 50 can fully contact with the static contact 10 without interfering with each other.
[0025] Two limit rods 15 are fixed inside the housing 1. The limit rods 15 are located on the side of the conductive strip 5 away from the static contact 10. Guide waist holes 70 are provided at both ends of the limit spring sheet 7. The two guide waist holes 70 correspond to the two limit rods 15 one by one. The limit rods 15 pass through the corresponding guide waist holes 70. The limit spring sheet 7 is bent toward the side close to the conductive strip 5. The limit spring sheet 7 is fixed to one conductive strip 5. The limit spring sheet 7 allows the static contact 10 and the moving contact 50 to be separated under the elastic force of the limit spring sheet 7 when the relay is powered off, thereby ensuring the safety of the relay.
[0026] Embodiment 2: In this embodiment, two oppositely arranged side baffles 46 are provided on the first connecting portion, and the two conductive strips 5 are located between the two side baffles 46. The side baffles 46 are non-magnetic stainless steel plates. The side baffles 46 can effectively limit the range of movement of the conductive strips 5, so that the moving contact 50 is not easily misaligned with the static contact 10, thereby ensuring the reliability of the attraction of the moving contact 50 and the static contact 10.
[0027] Embodiment three: In this embodiment, a U-shaped magnetic conductive plate 20 is fixed on the conductive strip 5, and the open end of the U-shaped magnetic conductive plate 20 is located on the side where the movable contact 50 of the conductive strip 5 is located. The U-shaped magnetic conductive plate 20 surrounds the conductive strip 5, and an iron block 16 matched with the U-shaped magnetic conductive plate 20 is fixed inside the outer shell 1. When the static contact 10 and the movable contact 50 are attracted together, the U-shaped magnetic conductive plate 20 and the iron block 16 are attracted together. When an instantaneous short-circuit current is generated in the circuit, the current passing through the conductive strip 5 will instantly increase, and the magnetic field on the U-shaped magnetic conductive plate 30 will also increase accordingly, so that the U-shaped magnetic conductive plate 30 can firmly absorb the iron block 16, which can offset the repulsive force generated by the static contact 10 and the movable contact 50 due to the instantaneous increase in current, thereby ensuring that the static contact 10 and the movable contact 50 will not be separated due to the instantaneous short-circuit current, thereby ensuring the stability of the circuit.
[0028] Embodiment 4: The difference between this embodiment and the first embodiment is that the elastic sheet 6 has a different structure. The elastic sheet 6 is composed of an elastic strip 61 and a connecting strip 62. There are two elastic strips 61. The elastic strip 61 is composed of a first strip body 611, an S-shaped connecting strip 612, and a second strip body 613. Both ends of the first strip body 611 are connected to the S-shaped connecting strip 612. The end of the S-shaped connecting strip 612 is connected to the second strip body 613. The second strip body 613 is connected to the conductive strip 5. The two second strip bodies 613 are located on the same side of the first strip body 611. When the elastic sheet 6 is not under pressure, the first strip body 611 and the second strip body 613 are parallel to each other. The two ends of the connecting strip 62 are respectively connected to the middle parts of the two first strip bodies 611, and the first connecting part is fixed to the middle parts of the two first strip bodies 611. The structure of the elastic sheet 6 in this embodiment is softer and can significantly improve the elastic force of the elastic sheet 6.
[0029] Embodiment five: In this embodiment, a U-shaped spring piece 13 is fixed inside the housing 1. When the second moving contact 50 and the static contact 10 are not in the attracted state, the U-shaped spring piece 13 abuts against the second connecting portion and the U-shaped spring piece 13 is in a compressed state. The U-shaped spring piece 13 can adjust the attraction voltage of the relay. In other cases where adjustment is inconvenient, the initial elastic force of the U-shaped spring piece 13 on the movable bar 4 can be changed by selecting different U-shaped spring pieces 13. The greater the initial elastic force provided by the U-shaped spring 13, the smaller the attraction voltage required by the relay.
[0030] Working process of the present invention: During operation of the large-gap magnetic latching relay of the present invention, when the coil 2 is energized to cause the magnetic steel assembly 3 to rotate clockwise, the movable arm 30 also rotates clockwise. When the movable arm 30 rotates clockwise, it drives the movable bar 3 to move, and the movable bar 3 drives the movable conductive assembly 45 to move. When the magnetic steel assembly 3 rotates a certain angle, the first limit block 31 on the magnetic steel assembly 3 will be resisted by the second limit block 21. At this time, the magnetic steel assembly 3 stops rotating. At this position, the moving contact 50 is tightly fitted with the static contact 10, and the first conductive assembly 11 and the second conductive assembly 12 are in a conducting state.
[0031] When the coil 2 is energized to make the magnetic steel assembly 3 rotate counterclockwise, the movable arm 30 also rotates clockwise. When the movable arm 30 rotates clockwise, it drives the movable bar 3 to move, and the movable bar 3 drives the movable conductive assembly 45 to move. When the magnetic steel assembly 3 rotates a certain angle, the first limit block 31 on the magnetic steel assembly 3 will be resisted by the second limit block 21. At this time, the magnetic steel assembly 3 stops rotating. During the rotation, the moving contact 50 and the static contact 10 will separate. After separation, the first conductive assembly 11 and the second conductive assembly 12 are in a conducting state.
[0032] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.
Claims
1. Large gap magnetic latching relay, characterized by: The invention comprises a housing (1), a coil (2), a magnetic steel component (3), a movable arm (30), a movable bar (4), a first conductive component (11), a second conductive component (12), and a movable conductive component (45), wherein the housing (1) is fixed with the first conductive component (11) and the second conductive component (12), the first conductive component (11) and the second conductive component (12) are located on the same side of the housing (1), and a portion of the first conductive component (11) and the second conductive component (12) extend into the housing (1), and a horizontally arranged coil (2) is provided inside the housing (1), and magnetic conductive sheets (20) are fixed at both ends of the coil (2), and the ends of the magnetic conductive sheets (20) are The second limit block (21) is bent to form a second limit block (21), and the second limit block (21) is located on the mutually adjacent sides of the magnetic conductive sheet (20). A magnetic steel assembly (3) is installed inside the housing (1), and the magnetic steel assembly (3) is located above the coil (2). The magnetic steel assembly (3) is composed of a main body block (35), a magnetic steel sheet (37), and a rotating shaft (36). The main body block (35) is fixed with a rotating shaft (36) on both sides. The two rotating shafts (36) are located on the same central axis. The central axis of the rotating shaft (36) is perpendicular to the central axis of the coil (2). The two rotating shafts (36) are rotatably installed inside the housing (1). The main body block (35) is penetrated by two magnetic steel sheets (37) distributed up and down. The two ends of the sheet (37) are respectively exposed on opposite sides of the main body block (35); the magnetic steel sheet (37) is exposed on the outer part of the main body block (35) to form a first limit block (31); two first limit blocks (31) are provided on both sides of the main body block (35) close to the magnetic conductive sheet (20); the two first limit blocks (31) located on the same side of the main body block (35) are respectively the N pole and the S pole of the magnetic steel sheet (37); a second limit block (21) is provided between the two first limit blocks (31) located on the same side of the main body block (35); a movable arm (30) is fixed to the bottom of the magnetic steel assembly (3); the movable arm (30) is located between the magnetic steel assembly (3) and the coil (2); A limiting component is fixed inside the housing (1), the limiting component forms a limiting channel (14) parallel to the central axis of the coil (2), a movable bar (4) adapted to the limiting channel (14) is provided inside the housing (1), the movable bar (4) passes through the limiting channel (14), a avoidance area for avoiding the movable bar (4) is provided on the magnetic conductive sheet (20), a first connecting portion and a second connecting portion are respectively provided at both ends of the movable bar (4), a plug hole (40) is provided on the first connecting portion, the movable arm (30) is inserted into the plug hole (40), and a movable conductive component (45) for cooperating with the first conductive component (11) and the second conductive component (12) is fixed on the second connecting portion.
2. The large gap magnetic latching relay according to claim 1, characterized in that: The first conductive component (11) and the second conductive component (12) are each provided with two static contacts (10), the static contacts (10) being located inside the housing (1); the movable conductive component (45) comprises an elastic sheet (6), a conductive strip (5), a movable contact (50), and a limit spring sheet (7); there are two conductive strips (5), each conductive strip (5) is fixed with two movable contacts (50), the two movable contacts (50) are located on the same side of the conductive strip (5), each movable contact (50) corresponds to one static contact (10), and the two movable contacts (50) on the same conductive strip (5) correspond to the static contacts (10) on the first conductive component (11) and the second conductive component (12), respectively; the elastic sheet (6) is composed of an elastic strip (61) and a connecting strip (62), there are two elastic strips (61), each elastic strip (62) has a plurality of movable contacts (50), and each movable contact (50) has a plurality of movable contacts (50). (61) corresponds to a conductive strip (5), both ends of the elastic strip (61) are fixed to the corresponding conductive strip (5), the elastic strip (61) protrudes toward the side away from the conductive strip (5), the middle parts of the two elastic strips (61) are connected by a connecting strip (62), the first connecting part is fixed to the connecting strip (62) or to the two elastic strips (61), two limiting rods (15) are fixed inside the housing (1), the limiting rods (15) are located on the side of the conductive strip (5) away from the static contact (10), both ends of the limiting spring sheet (7) are provided with guide waist holes (70), the two guide waist holes (70) correspond to the two limiting rods (15) one by one, the limiting rods (15) pass through the corresponding guide waist holes (70), the limiting spring sheet (7) is bent toward the side close to the conductive strip (5), and the limiting spring sheet (7) is fixed to one conductive strip (5).
3. The large gap magnetic latching relay according to claim 2, characterized in that: The first connecting portion is provided with two side baffles (46) arranged opposite to each other, and the two conductive strips (5) are located between the two side baffles (46).
4. The large gap magnetic latching relay according to claim 3, characterized in that: The side baffle (46) is a non-magnetic stainless steel plate.
5. The large gap magnetic latching relay according to claim 2, characterized in that: A U-shaped magnetic conductive plate (20) is fixed on the conductive strip (5), an open end of the U-shaped magnetic conductive plate (20) is located on the side where the movable contact (50) of the conductive strip (5) is located, the U-shaped magnetic conductive plate (20) surrounds the conductive strip (5), an iron block (16) matched with the U-shaped magnetic conductive plate (20) is fixed inside the housing (1), and when the static contact (10) and the movable contact (50) are attracted together, the U-shaped magnetic conductive plate (20) and the iron block (16) are attracted together.
6. The large gap magnetic latching relay according to claim 2, characterized in that: The elastic strip (61) is composed of a first strip body (611), an S-shaped connecting piece (612), and a second strip body (613); both ends of the first strip body (611) are connected to the S-shaped connecting piece (612); the end of the S-shaped connecting piece (612) is connected to the second strip body (613); the second strip body (613) is connected to the conductive strip (5); the two second strip bodies (613) are located on the same side of the first strip body (611); when the elastic sheet (6) is not under pressure, the first strip body (611) and the second strip body (613) are parallel to each other; and both ends of the connecting strip (62) are respectively connected to the middle parts of the two first strip bodies (611).
7. The large gap magnetic latching relay according to claim 1, characterized in that: A U-shaped spring piece (13) is fixed inside the housing (1); when the second moving contact (50) and the static contact (10) are not in the attracted state, the U-shaped spring piece (13) abuts against the second connecting portion and the U-shaped spring piece (13) is in a compressed state.