Magnetic latching relay with high closing reliability

Abstract

The utility model discloses a magnetic latching relay with strong closing reliability, which comprises a base, a top cover for closing an opening at the top of the base, and a coil assembly, a magnetic steel assembly, a first moving point assembly, a second moving point assembly, a pushing sheet and a connecting bridge which are positioned in an inner cavity of the base, the middle shaft is fixed on a bottom plate of the base, the middle part of the bridge sheet is rotatably fixed on the middle shaft, two ends of the bridge sheet are respectively hinged with the pushing sheet and the sliding sheet, and the sliding sheet is parallel to the pushing sheet and is respectively connected with a first movable contact spring of the first movable point assembly and a second movable contact spring of the second movable point assembly. The yoke attracts the armature to drive the magnetic steel to rotate, the horizontal movement of the second movable contact is controlled by the linear movement of the pushing piece, and the horizontal movement of the first movable contact is controlled by the rotation of the bridge piece, so that the opening and closing of the two contacts are realized, and the closing of the relay is completed.

Description

[Technical field]

[0001] The utility model relates to the technical field of magnetic latching relays, in particular to the technical field of magnetic latching relays with strong closing reliability. [Background technology]

[0002] The magnetic latching relay is a new type of relay developed in recent years. It plays the role of automatically connecting and disconnecting the circuit. When the contacts of the relay need to be opened or closed, it only needs to excite the coil with a positive DC pulse voltage to complete the state conversion of the relay open and closed in an instant. Usually when the contacts are in the holding state, the coil does not need to continue to be energized, and the magnetic force of the permanent magnet alone can maintain the state of the relay unchanged.

[0003] However, the existing magnetic latching relay has the problem of low closing reliability of the moving and static contacts, especially in a high current environment, the problem of low closing reliability is particularly prominent. [Contents of the utility model]

[0004] The utility model aims to solve the problems in the prior art and provides a magnetic latching relay with strong closing reliability, which can make two moving contacts move horizontally at the same time and has strong contact reliability.

[0005] To achieve the above-mentioned purpose, the utility model proposes a magnetic latching relay with strong closing reliability, including a base, a top cover that closes the top opening of the base, and a coil assembly, a magnetic steel assembly, a first moving point assembly, a second moving point assembly, a push piece and a connecting bridge located in the inner cavity of the base, wherein the connecting bridge includes a bridge piece, a central axis and a sliding piece, wherein the central axis is fixed to the bottom plate of the base, the middle part of the bridge piece is rotatably fixed on the central axis and the two ends are respectively hinged to the pushing piece and the sliding piece, and the sliding piece is parallel to the pushing piece and is respectively connected to the first moving spring piece of the first moving point assembly and the second moving spring piece of the second moving point assembly.

[0006] Preferably, the magnetic steel assembly includes a magnetic steel, an armature fixed on the left and right sides of the magnetic steel to form a gap, a clamping column fixed on the front side of the magnetic steel, and a rotating shaft located in the center of the magnetic steel. The coil assembly consists of a coil and a yoke, and the ends of the yoke are respectively inserted into the gaps of the armature on the left and right sides, and the push plate is clamped with the clamping column.

[0007] Preferably, the first moving point assembly includes a first moving spring sheet and a first moving contact and a first moving lead-out sheet respectively fixed on both sides of the first moving spring sheet; the second moving point assembly includes a second moving spring sheet and a second moving contact and a second moving lead-out sheet respectively fixed on both sides of the second moving spring sheet; the first moving contact and the second moving contact are arranged opposite to each other, and one end of the first moving lead-out sheet and the second moving lead-out sheet respectively pass through the side plate of the base.

[0008] Preferably, it also includes an adjusting bolt, a threaded hole is provided on the first movable lead-out piece, the adjusting bolt is screwed into the threaded hole and the bottom end of the screw is against the first movable spring piece, the top surface of the sliding piece is provided with a through groove, and the top surface of the bottom end of the first movable spring piece is provided with an extension piece with a through hole, and the extension piece is fixed on the through groove by a bolt and nut assembly.

[0009] Preferably, a push block is further provided at the bottom end of the screw rod of the adjusting bolt.

[0010] The beneficial effects of the utility model are as follows: the utility model attracts the armature by the yoke iron to drive the magnet to rotate, uses the linear motion of the push piece to control the horizontal movement of the second moving contact, and uses the rotation of the bridge piece to control the horizontal movement of the first moving contact, so as to realize the separation and combination of the two contacts, thereby completing the closing of the relay; the first moving spring piece is pushed by setting an adjusting bolt, and the extension piece set at the bottom end of the first moving spring piece is threadedly fixed on the through groove of the sliding piece, so as to realize the adjustment of the initial position of the first moving spring piece and ensure the closing effect.

[0011] 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

[0012] Figure 1 This is a top view of the magnetic latching relay with high closing reliability of the utility model after removing the top cover;

[0013] Figure 2 It is a top view of the magnetic latching relay with high closing reliability of the utility model;

[0014] Figure 3 yes Figure 1 An enlarged schematic diagram of point A.

[0015] In the figure: 1-base, 2-top cover, 3-coil assembly, 31-coil, 32-yoke, 4-magnetic steel assembly, 41-magnetic steel, 42-armature, 43-column, 44-rotating shaft, 5-first moving point assembly, 51-first moving contact, 52-first moving spring, 521-extension piece, 53-first moving lead-out piece, 6-second moving point assembly, 61-second moving contact, 62-second moving spring, 63-second moving lead-out piece, 7-pushing piece, 8-connecting bridge, 81-bridge piece, 82-central shaft, 83-sliding piece, 831-through slot, 9-adjusting bolt, 91-push block. [Specific implementation method]

[0016] See also Figure 1 , Figure 2 and Figure 3The utility model has a magnetic latching relay with high closing reliability, comprising a base 1, a top cover 2 closing the top opening of the base 1, a coil assembly 3, a magnetic steel assembly 4, a first moving point assembly 5, a second moving point assembly 6, a push piece 7 and a connecting bridge 8 located in the inner cavity of the base 1, wherein the connecting bridge 8 comprises a bridge piece 81, a central axis 82 and a sliding piece 83, wherein the central axis 82 is fixed on the bottom plate of the base 1, the middle part of the bridge piece 81 is rotatably fixed on the central axis 82 and the two ends are respectively connected to the push piece 7 and the sliding piece 83 The slide 83 is parallel to the push plate 7 and is respectively connected to the first moving spring 52 of the first moving point assembly 5 and the second moving spring 62 of the second moving point assembly 6. The magnetic steel assembly 4 includes a magnetic steel 41, an armature 42 fixed on the left and right sides of the magnetic steel 41 to form a gap, a clamping column 43 fixed on the front side of the magnetic steel 41, and a rotating shaft 44 located in the center of the magnetic steel 41. The coil assembly 3 is composed of a coil 31 and a yoke 32, and the ends of the yoke 32 are respectively inserted into the armature 42 on the left and right sides. The push piece 7 is engaged with the card column 43 in the gap, the first moving point component 5 includes a first moving spring piece 52 and a first moving contact 51 and a first moving lead-out piece 53 respectively fixed on both sides of the first moving spring piece 52, the second moving point component 6 includes a second moving spring piece 62 and a second moving contact 61 and a second moving lead-out piece 63 respectively fixed on both sides of the second moving spring piece 62, the first moving contact 51 and the second moving contact 61 are arranged opposite to each other, one end of the first moving lead-out piece 53 and the second moving lead-out piece 63 respectively passes through the side plate of the base 1, and also includes an adjusting bolt 9, the first moving lead-out piece 53 is provided with a threaded hole, the adjusting bolt 9 is screwed into the threaded hole and the bottom end of the screw rod is against the first moving spring piece 52, the top surface of the sliding piece 83 is provided with a through groove 831, the bottom end top surface of the first moving spring piece 52 is provided with an extension piece 521 with a through hole, the extension piece 521 is fixed on the through groove 831 by a bolt and nut assembly, and the bottom end of the screw rod of the adjusting bolt 9 is also provided with a push block 91.

[0017] Working process of this utility model:

[0018] The coil 31 is energized, and the armature 42 is attracted through the yoke 32, so that the magnet 41 rotates along the rotating shaft 44. The rotating magnet 41 drives the push piece 7 to move horizontally to the left through the clamping column 43, thereby pushing the second moving spring piece 62 and the second moving contact 61 thereon to move to the left. At the same time, the push piece 7 drives the bridge piece 81 to rotate counterclockwise, and the bridge piece 81 drives the slide piece 83 to move rightward, thereby pulling the first moving spring piece 52 and the first moving contact 51 thereon to move rightward, so that the first moving contact 51 and the second moving contact 61 are in contact, and the relay is closed.

[0019] The utility model drives the magnet to rotate by attracting the armature through the yoke iron, controls the horizontal movement of the second moving contact by the linear motion of the push piece, and controls the horizontal movement of the first moving contact by the rotation of the bridge piece, so as to realize the separation and combination of the two contacts, thereby completing the closing of the relay; the first moving spring piece is pushed by setting an adjusting bolt, and the extension piece set at the bottom end of the first moving spring piece is threadedly fixed on the through groove of the sliding piece, so as to realize the adjustment of the initial position of the first moving spring piece and ensure the closing effect.

[0020] 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 falls within the protection scope of the present invention.

Claims

1. A magnetic latching relay with high closing reliability, characterized by: The invention comprises a base (1), a top cover (2) closing the top opening of the base (1), a coil assembly (3) located in the inner cavity of the base (1), a magnetic steel assembly (4), a first moving point assembly (5), a second moving point assembly (6), a push piece (7) and a connecting bridge (8), wherein the connecting bridge (8) comprises a bridge piece (81), a central axis (82) and a sliding piece (83), wherein the central axis (82) is fixed on the bottom plate of the base (1), the middle part of the bridge piece (81) is rotatably fixed on the central axis (82) and the two ends are respectively hinged to the push piece (7) and the sliding piece (83), and the sliding piece (83) is parallel to the push piece (7) and is respectively connected to the first moving spring piece (52) of the first moving point assembly (5) and the second moving spring piece (62) of the second moving point assembly (6).

2. The magnetic latching relay with high closing reliability as claimed in claim 1, characterized in that: The magnetic steel assembly (4) comprises a magnetic steel (41), an armature (42) fixed on the left and right sides of the magnetic steel (41) to form a gap, a clamping column (43) fixed on the front side of the magnetic steel (41), and a rotating shaft (44) located in the center of the magnetic steel (41); the coil assembly (3) comprises a coil (31) and a yoke (32), and the ends of the yoke (32) are respectively inserted into the gaps of the armature (42) on the left and right sides; the push piece (7) is clamped with the clamping column (43).

3. The magnetic latching relay with high closing reliability as claimed in claim 1, characterized in that: The first moving point assembly (5) comprises a first moving spring (52) and a first moving contact (51) and a first moving lead-out piece (53) respectively fixed on both sides of the first moving spring (52); the second moving point assembly (6) comprises a second moving spring (62) and a second moving contact (61) and a second moving lead-out piece (63) respectively fixed on both sides of the second moving spring (62); the first moving contact (51) and the second moving contact (61) are arranged opposite to each other; one end of the first moving lead-out piece (53) and one end of the second moving lead-out piece (63) respectively pass through the side plate of the base (1).

4. The magnetic latching relay with high closing reliability as claimed in claim 3, characterized in that: It also includes an adjusting bolt (9), a threaded hole is provided on the first movable lead-out piece (53), the adjusting bolt (9) is screwed into the threaded hole and the bottom end of the screw rod abuts against the first movable spring piece (52), the top surface of the sliding piece (83) is provided with a through groove (831), the top surface of the bottom end of the first movable spring piece (52) is provided with an extension piece (521) with a through hole, and the extension piece (521) is fixed on the through groove (831) by a bolt and nut assembly.

5. The magnetic latching relay with high closing reliability as claimed in claim 4, characterized in that: A push block (91) is also provided at the bottom end of the screw rod of the adjusting bolt (9).

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