Novel magnetic latching relay

Abstract

The utility model relates to the technical field of relays, in particular to a novel magnetic latching relay which comprises a base, a coil, yokes, a magnetic steel assembly, a movable spring assembly and a static spring assembly, the coil is installed on the right side of the base, the two ends of the coil are connected with the L-shaped yokes, the magnetic steel assembly is arranged between the yokes, and a magnetic steel supporting frame is clamped outside the magnetic steel assembly. One end of the magnetic steel assembly is connected with the transmission rod, the other end of the transmission rod is connected with the movable spring assembly, the microswitch is arranged below the right side of the movable spring assembly, the elastic piece is arranged under the movable spring assembly, the static spring assemblies are arranged above the movable spring assembly, the guide rail supporting frame is clamped outside the movable spring assembly, and the magnetic short circuit ring static piece is arranged between the static spring assemblies. The two ends of the transmission rod are arranged at equal intervals, energy consumption is reduced, energy is saved, and environment friendliness is achieved; the supporting frame and the movable spring assembly are installed in a clamping mode, the installation efficiency is improved, overhauling and dismounting are convenient, and the movement stability of the movable spring assembly is guaranteed; therefore, the force required for separating and closing the contacts is smaller, the energy consumption is reduced, and the abrasion to the contacts is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, and more specifically, to a novel magnetic latching relay. Background Art

[0002] Magnetic latching relay is an electronic control device that plays the role of automatic adjustment, safety protection, circuit conversion, etc. in the circuit. It is widely used in power protection, automation, motion, remote control, measurement and communication devices. Magnetic latching relay usually includes a base, a yoke combination, a magnetic steel assembly, a moving spring assembly, a static spring assembly and a push piece. The coil is wound on the skeleton of the yoke combination. When the current direction in the coil changes, the yoke in the yoke combination will cause the magnetic steel assembly to rotate, thereby pushing the push piece, so that the moving contact and the static contact are separated or closed.

[0003] An existing relay, with publication number CN 117766341 A, comprises a magnetic circuit part, a swing connector and a contact part; the contact part comprises a moving contact and a static contact; the magnetic circuit part comprises a coil assembly and an armature assembly, the coil assembly comprises a coil body, and the coil body drives the armature assembly to switch and rotate around a first axis through magnetic force; the swing connector has a first end and a second end, and the part of the swing connector located between the first end and the second end is suitable for rotating around the second axis; the vertical distance between the first end and the second axis is smaller than the vertical distance between the second end and the second axis; the swing connector is configured to rotate by receiving the armature assembly toggle by the first end, and to drive the moving contact to a closed position or an open position by the second end when rotating, so that the small rotation stroke of the armature assembly can be amplified and converted, and a large stroke design of disconnection and closing of the moving contact and the static contact can be realized. The utility model can amplify and convert the small rotation stroke of the armature assembly to achieve the separation and closing of the contacts, but such a design requires the magnetic circuit part to provide stronger power to achieve the purpose of controlling the contact part, which increases the energy consumption of the relay. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a novel magnetic latching relay which is quick to install and has reduced energy consumption.

[0005] To achieve the above object, the present utility model provides the following technical solutions: a novel magnetic latching relay, comprising a base, a microswitch, a coil, a yoke, a magnet assembly, a magnet support frame, a transmission rod, a moving contact assembly, a guide rail support frame, a static contact assembly, a magnetic short-circuit ring static plate, and a spring sheet. The coil is installed on the right side of the base, and both ends of the coil are connected to an L-shaped yoke. A magnet assembly is provided between the yokes. The magnet support frame is clamped outside the magnet assembly. One end of the magnet assembly is connected to the transmission rod, and the other end of the transmission rod is connected to the moving contact assembly. A microswitch is provided below the right side of the moving contact assembly, a spring sheet is provided directly below the moving contact assembly, a static contact assembly is provided above the moving contact assembly, and the guide rail support frame is clamped outside the moving contact assembly. A magnetic short-circuit ring static plate is provided between the static contact assemblies.

[0006] Preferably, the magnet assembly includes a rotating body, a transmission groove, and an armature plate. The rotating body is rotatably connected to the magnet support frame. Armature plates are provided at both ends of the rotating body, and a transmission groove is provided on one side of the rotating body close to the transmission rod.

[0007] Preferably, the transmission rod includes a rotating shaft, a first connecting section, and a second connecting section. The first connecting section and the second connecting section are provided at both ends of the rotating shaft. The first connecting section and the second connecting section are symmetrically arranged and have the same length.

[0008] Preferably, the moving contact assembly includes a moving contact transmission groove, a moving contact conductive sheet, a moving contact, a moving contact spring sheet, and a fixed buckle. The moving contact conductive sheet is provided above the moving contact transmission groove. A pair of moving contacts are provided on both sides of the moving contact conductive sheet. The moving contact spring sheet is provided below the moving contact conductive sheet, and a fixed buckle is provided on the upper side of the moving contact spring sheet.

[0009] Preferably, the fixed buckle is provided with a protrusion, and the protrusion is slidably connected to a guide rail groove provided on the guide rail support frame.

[0010] Preferably, the static contact assembly is provided above the moving contact assembly. A pair of static contacts are provided on both sides of the static contact assembly. The static contacts are arranged corresponding to the moving contacts.

[0011] Preferably, one end of the static contact assembly is externally connected to a neutral current transformer.

[0012] Preferably, a shielding cover is installed on the side of the base close to the coil, and a cover plate is installed outside the base.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The transmission rod provided in the novel magnetic latching relay of the present utility model is provided with equal distances at both ends. Under the condition of ensuring the same stroke, the energy consumption required by the coil is reduced, energy is effectively saved, green environmental protection is ensured, and at the same time, the heat generation of the coil is reduced, improving the overall stability and service life of the relay;

[0015] 2. The novel magnetic latching relay of the present utility model installs the support frame and the moving reed assembly in a snap - fit manner, which improves the installation efficiency, facilitates disassembly and assembly for maintenance, and at the same time, the buckle of the moving reed assembly is arranged in the support frame groove to guide its movement and ensure the stability of the movement of the moving reed assembly;

[0016] 3. The novel magnetic latching relay of the present utility model is provided with components such as a spring piece and a static piece of a magnetic short - circuit ring, which makes the force required for the separation and closing of the contacts smaller, reduces energy consumption and at the same time reduces the wear of the contacts, and improves the overall reliability of the relay. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a novel magnetic latching relay of the present utility model;

[0018] Figure 2 is an exploded view of the structure of a novel magnetic latching relay of the present utility model;

[0019] Figure 3 is a structural diagram of the magnetic steel assembly of a novel magnetic latching relay of the present utility model;

[0020] Figure 4 is a structural diagram of the transmission rod of a novel magnetic latching relay of the present utility model;

[0021] Figure 5 is a structural diagram of the moving reed assembly of a novel magnetic latching relay of the present utility model;

[0022] Figure 6 is a sectional structural diagram of the moving reed assembly of a novel magnetic latching relay of the present utility model

[0023] In the figure: 1 - base, 2 - micro - switch, 3 - coil, 4 - yoke iron, 5 - magnetic steel assembly, 51 - rotating body, 52 - transmission groove, 53 - armature plate, 6 - magnetic steel support frame, 7 - transmission rod, 71 - rotating shaft, 72 - connecting section one, 73 - connecting section two, 8 - moving reed assembly, 81 - moving reed transmission groove, 82 - moving reed conductive sheet, 83 - moving contact, 84 - moving reed spring piece, 85 - fixed buckle, 851 - protrusion, 9 - guide rail support frame, 91 - guide rail groove, 10 - static reed assembly, 101 - static contact, 11 - static piece of magnetic short - circuit ring, 12 - spring piece, 13 - shielding cover, 14 - cover plate, 15 - zero - line current transformer. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Refer to Figure 1 、 Figure 2 , in the embodiment of the present invention, a new type of magnetic latching relay includes a base 1, a micro switch 2, a coil 3, a yoke 4, a magnet assembly 5, a magnet support frame 6, a transmission rod 7, a moving contact assembly 8, a guide rail support frame 9, a static contact assembly 10, a magnetic short-circuit ring static piece 11, and a spring piece 12. The coil 3 is installed on the right side of the base 1. The two ends of the coil 3 are connected to the L-shaped yoke 4. A magnet assembly 5 is arranged between the yokes 4. The magnet support frame 6 is clamped outside the magnet assembly 5. One end of the magnet assembly 5 is connected to the transmission rod 7. The other end of the transmission rod 7 is connected to the moving contact assembly 8. The micro switch 2 is arranged below the right side of the moving contact assembly 8. The spring piece 12 is arranged directly below the moving contact assembly 8. The static contact assembly 10 is arranged above the moving contact assembly 8. The guide rail support frame 9 is clamped outside the moving contact assembly 8. The magnetic short-circuit ring static piece 11 is arranged between the static contact assemblies 10. A shielding cover 13 is installed on one side of the base 1 close to the coil 3, and a cover plate 14 is installed outside the base 1.

[0026] Refer to Figure 3 , in the embodiment of the present invention, a new type of magnetic latching relay, the magnet assembly 5 includes a rotating body 51, a transmission groove 52, and an armature plate 53. The rotating body 51 is rotatably connected to the magnet support frame 6. Armature plates 53 are arranged at both ends of the rotating body 51. A transmission groove 52 is arranged on one side of the rotating body 51 close to the transmission rod 7.

[0027] Refer to Figure 4 , in the embodiment of the present invention, a new type of magnetic latching relay, the transmission rod 7 includes a rotating shaft 71, a first connecting section 72, and a second connecting section 73. The first connecting section 72 and the second connecting section 73 are arranged at both ends of the rotating shaft 71. The first connecting section 72 and the second connecting section 73 are symmetrically arranged and have the same length.

[0028] Refer to Figure 1 、 Figure 5 、 Figure 6, in the embodiment of the present utility model, a novel magnetic latching relay, the moving contact assembly 8 includes a moving contact driving groove 81, a moving contact conductive sheet 82, a moving contact 83, a moving contact spring piece 84, and a fixed buckle 85. Above the moving contact driving groove 81 is provided a moving contact conductive sheet 82. On both sides of the moving contact conductive sheet 82 are provided a pair of moving contacts 83. Below the moving contact conductive sheet 82 is provided a moving contact spring piece 84. On the upper side of the moving contact spring piece 84 is provided a fixed buckle 85. The fixed buckle 85 is sleeved on the moving contact conductive sheet 82, and the fixed buckle 85 is snap-connected to the moving contact driving groove 81 through the bottom buckle. On the fixed buckle 85 is provided a protrusion 851, and the protrusion 851 is slidably connected to a guide groove 91 provided on a guide rail support frame 9. Above the moving contact assembly 8 is provided a static contact assembly 10. On both sides of the static contact assembly 10 are provided a pair of static contacts 101. The static contacts 101 are arranged corresponding to the moving contacts 83. One end of the static contact assembly 10 is externally connected to a neutral line current transformer 15.

[0029] For a novel magnetic latching relay of the present utility model, when it is turned on and used, the coil 3 is energized, and the L-shaped yoke irons 4 at both ends are given magnetic poles. The magnetic steel assembly 5 is attracted by the magnetic force to rotate. The rotating body 51 rotates clockwise, and the upper left end and the lower right end are respectively connected to the upper and lower yoke irons 4. The rotation of the rotating body 51 drives the rotation of the driving groove 52, drives one side of the transmission rod 7 to move upward, and the other side of the transmission rod 7 to move downward, so that the connected moving contact assembly 8 moves downward in the guide groove 91 of the guide rail support frame 9, and the moving contact 83 is separated from the static contact 101. At this time, the downward movement of the moving contact assembly 8 transmits feedback to the microswitch 2, and the elastic sheet 12 provided at the bottom of the moving contact assembly 8 is compressed, so that the force required for the contacts to close is smaller; when the current of the coil 3 is reversed, the L-shaped yoke irons 4 at both ends are given magnetic poles, and the magnetic steel assembly 5 is attracted by the magnetic force to rotate. The rotating body 51 rotates counterclockwise, and the upper right end and the lower left end are respectively connected to the upper and lower yoke irons 4. The rotation of the rotating body 51 drives the rotation of the driving groove 52, drives one side of the transmission rod 7 to move downward, and the other side of the transmission rod 7 to move upward, so that the connected moving contact assembly 8 moves upward in the guide groove 91 of the guide rail support frame 9, and the moving contact 83 is closed with the static contact 101. Since the moving contact conductive sheet 82 carries current and generates a magnetic field force, a magnetic short-circuit ring static sheet 11 is provided between the static contact assemblies 10 to offset the force and protect the contacts. The moving contact spring piece 84 below the moving contact conductive sheet 82 can protect the contact between the moving contact 83 and the static contact 101, and when switching between closing and separating, reduce the required force, achieve the purpose of reducing the overall energy consumption of the relay, and play a role in environmental protection.

[0030] The above embodiments are descriptions of the present utility model, not limitations on the present utility model. Any scheme obtained by simply transforming the present utility model belongs to the protection scope of the present utility model.

Claims

1. A novel magnetic latching relay, characterized in that: It includes a base (1), a micro switch (2), a coil (3), a yoke iron (4), a magnet assembly (5), a magnet support frame (6), a transmission rod (7), a moving spring assembly (8), a guide rail support frame (9), a static spring assembly (10), a static piece of magnetic short - circuit ring (11), and a spring piece (12). The coil (3) is installed on the right side of the base (1). Both ends of the coil (3) are connected to an L - shaped yoke iron (4). A magnet assembly (5) is arranged between the yoke irons (4). The magnet support frame (6) is clamped outside the magnet assembly (5). One end of the magnet assembly (5) is connected to the transmission rod (7). The other end of the transmission rod (7) is connected to the moving spring assembly (8). The micro switch (2) is arranged below the right side of the moving spring assembly (8). The spring piece (12) is arranged directly below the moving spring assembly (8). The static spring assembly (10) is arranged above the moving spring assembly (8). The guide rail support frame (9) is clamped outside the moving spring assembly (8). The static piece of magnetic short - circuit ring (11) is arranged between the static spring assemblies (10).

2. The novel magnetic latching relay according to claim 1, wherein: The magnet assembly (5) includes a rotating body (51), a transmission groove (52), and an armature plate (53). The rotating body (51) is rotatably connected to the magnet support frame (6). Armature plates (53) are arranged at both ends of the rotating body (51). A transmission groove (52) is arranged on one side of the rotating body (51) close to the transmission rod (7). The transmission groove (52) is connected to the transmission rod (7).

3. A novel magnetic latching relay according to claim 1, characterized in that: The transmission rod (7) includes a rotating shaft (71), a first connecting section (72), and a second connecting section (73). The rotating shaft (71) is provided with the first connecting section (72) and the second connecting section (73) at both ends. The first connecting section (72) and the second connecting section (73) are symmetrically arranged and have the same length.

4. A novel magnetic latching relay according to claim 1, characterized in that: The moving spring assembly (8) includes a moving spring transmission groove (81), a moving spring conductive sheet (82), a moving contact (83), a moving spring piece (84), and a fixed buckle (85). The moving spring conductive sheet (82) is arranged above the moving spring transmission groove (81). A pair of moving contacts (83) are arranged on both sides of the moving spring conductive sheet (82). The moving spring piece (84) is arranged below the moving spring conductive sheet (82). A fixed buckle (85) is arranged on the upper side of the moving spring piece (84). The fixed buckle (85) is sleeved on the moving spring conductive sheet (82), and the fixed buckle (85) is clamped on the moving spring transmission groove (81) through an elastic buckle at the bottom.

5. The novel magnetic latching relay according to claim 4, wherein: The fixed buckle (85) is provided with a protrusion (851), and the protrusion (851) is slidably connected to a guide rail groove (91) arranged on the guide rail support frame (9).

6. A novel magnetic latching relay according to claim 1, characterized in that: The static spring assembly (10) is arranged above the moving spring assembly (8). A pair of static contacts (101) are arranged on both sides of the static spring assembly (10). The static contacts (101) are arranged corresponding to the moving contacts (83).

7. The novel magnetic latching relay according to claim 1, characterized in that: One end of the static spring assembly (10) is externally connected to a zero - sequence current transformer (15).

8. A novel magnetic latching relay according to claim 1, characterized in that: A shielding cover (13) is installed on one side of the base (1) close to the coil (3), and a cover plate (14) is installed outside the base (1).

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