Magnetic latching relay with main contact and auxiliary contact

Abstract

The utility model relates to the technical field of double-contact relays, in particular to a magnetic latching relay with a main contact and an auxiliary contact, which comprises a base, a coil, a magnetic steel assembly, a pushing sheet, a leading-out sheet, a conducting sheet, the main contact and the auxiliary contact. The lower side of the magnetic steel assembly is clamped with the right side of the pushing piece, the left side of the pushing piece is clamped with the lower side of the conducting piece, the upper side of the conducting piece is fixed to the upper side of the movable spring leading-out piece, and the conducting piece is provided with a right main contact and a right auxiliary contact. The left ends of the left main contact and the left auxiliary contact are fixedly connected to one end of the static spring leading-out sheet. According to the utility model, the main contact and the auxiliary contact are arranged, and the push sheet is provided with a step to successively open or close the auxiliary contact, thereby avoiding arc impact and improving the safety of the circuit; a groove is formed in the middle of the movable spring leading-out piece, and the action independence of the two contacts is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of double - contact relays. More specifically, the utility model relates to a magnetic latching relay with main and auxiliary contacts.

Background Art

[0002] A magnetic latching relay is an electronic control device that plays roles such as automatic regulation, safety protection, and circuit conversion in a circuit, and is widely used in devices such as power protection, automation, motion, remote control, measurement, and communication. A magnetic latching relay generally includes a base, a yoke assembly, a magnet assembly, a moving reed assembly, a static reed assembly, and a pusher. The coil is wound around the skeleton of the yoke assembly. When the direction of the current in the coil changes, the yoke in the yoke assembly will cause the magnet assembly to rotate, thereby pushing the pusher, causing the moving contact to separate from or close to the static contact.

[0003] An existing double - contact relay, with the publication number of CN 114999860 A, includes a reed. One end of the reed is a fixed end, and the other end is a free end that can swing under the drive of electromagnetic force; a first moving contact and a second moving contact are provided on the reed; a first static contact is provided at a position corresponding to the first moving contact, and a second static contact is provided at a position corresponding to the second moving contact; the first moving contact and the first static contact form a first pair of contacts, and the second moving contact and the second static contact form a second pair of contacts; the swinging angle of the reed required for the first pair of contacts to contact is greater than the swinging angle of the reed required for the second pair of contacts to contact; the electrical conductivity of the material of the first pair of contacts is higher than that of the second pair of contacts; the arc - erosion resistance and wear resistance of the material of the first pair of contacts are lower than those of the second pair of contacts. This double - contact relay sets two contacts with different materials and properties to achieve the advantages of high conductivity and corrosion resistance. However, when this double - contact relay is in use, the purpose of sequential contact is achieved by the thickness of the contacts, but it will cause uneven contact pressure, which will reduce the service life of the relay after long - term use.

Content of the Utility Model

[0004] In order to overcome the above - mentioned defects of the prior art, the purpose of the utility model is to provide a magnetic latching relay with main and auxiliary contacts, which sets steps to control the sequential opening and closing of the main and auxiliary contacts, protects the safety of the relay equipment, and ensures the independence of the actions of the two contacts.

[0005] To achieve the above object, the present utility model provides the following technical solution: A magnetic latching relay with main and auxiliary contacts, comprising a base, a coil, a support frame, a magnet assembly, a push piece, a moving reed lead-out piece, a static reed lead-out piece, a conductive piece, a right main contact, a left main contact, a right auxiliary contact, and a left auxiliary contact. The coil is installed on the right side of the base. A support frame is provided on the left side of the coil. The support frame is connected to the magnet assembly. The lower side of the magnet assembly is clamped to the right side of the push piece. The left side of the push piece is clamped to the lower side of the conductive piece. The upper side of the conductive piece is fixed to the upper side of the moving reed lead-out piece. The conductive piece is provided with a right main contact and a right auxiliary contact respectively. Corresponding to the right main contact and the right auxiliary contact on the left side are a left main contact and a left auxiliary contact. The left ends of the left main contact and the left auxiliary contact are fixedly connected to one end of the static reed lead-out piece.

[0006] Preferably, the sizes of the right main contact and the left main contact are larger than those of the right auxiliary contact and the left auxiliary contact.

[0007] Preferably, the conductive piece is arranged in a "J" shape with three layers. A moving reed elastic piece is fixed to the lower right side of the conductive piece. The lower ends of the conductive piece and the moving reed elastic piece are both clamped to the left side of the push piece.

[0008] Preferably, the moving reed lead-out piece and the static reed lead-out piece extend out of the base.

[0009] Preferably, the push piece is provided with a connection groove near the conductive piece. The connection groove is provided with a step to make the two side contacts disconnect successively.

[0010] Preferably, the right main contact and the left main contact are correspondingly arranged, and the right auxiliary contact and the left auxiliary contact are correspondingly arranged.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. The magnetic latching relay with main and auxiliary contacts of the present utility model is provided with main contacts and auxiliary contacts. The auxiliary contacts are disconnected or closed successively through the steps provided on the push piece, avoiding arc impact and improving the safety of the circuit.

[0013] 2. The moving reed lead-out piece of the magnetic latching relay with main and auxiliary contacts of the present utility model is provided with a slot in the middle, ensuring the independent movement of the two contacts and respectively providing contact elasticity. Cooperating with the slot of the conductive piece, the contacts have the ability to work independently.

Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the magnetic latching relay with main and auxiliary contacts of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the contact part of the magnetic latching relay with main and auxiliary contacts of the present utility model;

[0016] Figure 3 This is a structural diagram of a pusher of a magnetic latching relay with main and auxiliary contacts according to the present utility model;

[0017] In the figure: 1 - base, 2 - coil, 3 - support frame, 4 - magnet assembly, 5 - pusher, 51 - connection groove, 6 - moving reed lead-out piece, 7 - static reed lead-out piece, 8 - conductive sheet, 9 - right main contact, 10 - left main contact, 11 - right auxiliary contact, 12 - left auxiliary contact, 13 - moving reed elastic piece.

Specific implementation manner

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Refer to Figures 1 - 3 , in the embodiment of the present utility model, a magnetic latching relay with main and auxiliary contacts includes a base 1, a coil 2, a support frame 3, a magnet assembly 4, a pusher 5, a moving reed lead-out piece 6, a static reed lead-out piece 7, a conductive sheet 8, a right main contact 9, a left main contact 10, a right auxiliary contact 11, and a left auxiliary contact 12. The coil 2 is installed on the right side of the base 1, the support frame 3 is provided on the left side of the coil 2, the support frame 3 is connected to the magnet assembly 4, the lower side of the magnet assembly 4 is clamped to the right side of the pusher 5, the left side of the pusher 5 is clamped to the lower side of the conductive sheet 8, the upper side of the conductive sheet 8 is fixed to the upper side of the moving reed lead-out piece 6. The conductive sheet 8 is arranged in a "several" shape with three layers. The lower right side of the conductive sheet 8 is fixed with a moving reed elastic piece 13. The moving reed lead-out piece 6 extends out of the base 1. The lower ends of the conductive sheet 8 and the moving reed elastic piece 13 are both clamped to the left side of the pusher 5. The pusher 5 is provided with a connection groove 51 near the conductive sheet 8. The connection groove 51 is provided with a step on the side close to the auxiliary contact, so that the two-side contacts are disconnected successively. The middle of the conductive sheet 8 and the moving reed elastic piece 13 is grooved, so that the contact of the two sides is relatively independent. The conductive sheet 8 is provided with a right main contact 9 and a right auxiliary contact 11 respectively. The left side of the right main contact 9 and the right auxiliary contact 11 is provided with a left main contact 10 and a left auxiliary contact 12. The right main contact 9 and the left main contact 10 are correspondingly arranged. The right auxiliary contact 11 and the left auxiliary contact 12 are correspondingly arranged. The left ends of the left main contact 10 and the left auxiliary contact 12 are fixedly connected to one end of the static reed lead-out piece 7. The static reed lead-out piece 7 extends out of the base 1. The sizes of the right main contact 9 and the left main contact 10 are larger than the sizes of the right auxiliary contact 11 and the left auxiliary contact 12.

[0020] The utility model relates to a magnetic latching relay with main and auxiliary contacts. When in use, the coil 2 is energized. The magnet assembly 4 on the support frame 3 is attracted by the magnetic force at both ends of the coil 2 and rotates around the axis. The two-sided armature iron sheets contact the two-sided connection ends. During the rotation, the push rod controls the movement of the push piece 5. When the push piece 5 moves to the right, it drives the conductive sheet 8 in the connection groove 51 to move to the right, disconnecting the contacts. Since there is a step on the side of the contact groove 51 close to the auxiliary contact, the right auxiliary contact 11 is disconnected from the left auxiliary contact 12 first, and then the right main contact 9 is disconnected from the left main contact 10. The set step can make the disconnection occur successively, avoiding the phenomenon of loop impedance and improving the safety of the circuit. When the push piece 5 moves to the left, the right main contact 9 and the left main contact 10 are closed first, and then the right auxiliary contact 11 and the left auxiliary contact 12 are closed. Since the size of the main contact is larger than that of the auxiliary contact and the strength is higher than that of the auxiliary contact, by preferentially closing and disconnecting the auxiliary contact, the auxiliary contact can be effectively protected and the safety of this kind of relay can be improved. The conductive sheet 8 is provided with three layers of conductive sheets, increasing the safety of the circuit. One side of the conductive sheet 8 is provided with a moving spring elastic sheet 13, which can ensure the independent operation of the main contact and the auxiliary contact and they will not directly affect each other. This kind of magnetic latching relay is small in size, convenient and flexible to operate, and has high practicability.

[0021] The above embodiments are illustrative of the present utility model and not restrictive thereof. Any scheme obtained by simply transforming the present utility model falls within the protection scope of the present utility model.

Claims

1. A magnetic latching relay with main and auxiliary contacts, characterized in that: It includes a base (1), a coil (2), a support frame (3), a magnet assembly (4), a push piece (5), a moving spring lead piece (6), a static spring lead piece (7), a conductive piece (8), a right main contact (9), a left main contact (10), a right auxiliary contact (11), and a left auxiliary contact (12). The coil (2) is installed on the right side of the base (1). The support frame (3) is provided on the left side of the coil (2). The support frame (3) is connected to the magnet assembly (4). The lower side of the magnet assembly (4) is clamped to the right side of the push piece (5). The left side of the push piece (5) is clamped to the lower side of the conductive piece (8). The upper side of the conductive piece (8) is fixed to the upper side of the moving spring lead piece (6). The right main contact (9) and the right auxiliary contact (11) are provided on the conductive piece (8). The left main contact (10) and the left auxiliary contact (12) are correspondingly provided on the left side of the right main contact (9) and the right auxiliary contact (11). The left ends of the left main contact (10) and the left auxiliary contact (12) are fixedly connected to one end of the static spring lead piece (7).

2. A magnetic latching relay with main and auxiliary contacts as claimed in claim 1, characterized in that: The sizes of the right main contact (9) and the left main contact (10) are larger than those of the right auxiliary contact (11) and the left auxiliary contact (12).

3. A magnetic latching relay with main and auxiliary contacts as claimed in claim 1, characterized in that: The conductive piece (8) is arranged in a "ji" shape with three layers. The moving spring elastic piece (13) is fixed to the lower right side of the lower part of the conductive piece (8). The lower ends of the conductive piece (8) and the moving spring elastic piece (13) are both clamped to the left side of the push piece (5).

4. A magnetic latching relay with main and auxiliary contacts as claimed in claim 3, characterized in that: A groove is formed in the center of the conductive piece (8) and the moving spring elastic piece (13) so that the contact of both sides is relatively independent.

5. A magnetic latching relay with main and auxiliary contacts as claimed in claim 1, characterized in that: The moving spring lead piece (6) and the static spring lead piece (7) extend out of the base (1).

6. A magnetic latching relay with main and auxiliary contacts as claimed in claim 1, characterized in that: A connection groove (51) is provided on the push piece (5) close to the conductive piece (8). A step is provided on the connection groove (51) close to the auxiliary contact side so that the contacts on both sides are disconnected successively.

7. A magnetic latching relay with main and auxiliary contacts as claimed in claim 1, characterized in that: The right main contact (9) and the left main contact (10) are correspondingly arranged. The right auxiliary contact (11) and the left auxiliary contact (12) are correspondingly arranged.

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