A magnetic latching relay that automatically cuts off its own driving power supply

Abstract

The present invention discloses a magnetic latching relay that can automatically cut off its own driving power supply, including a base and a shell. The base is provided with multiple groups of contact mechanisms, a mounting platform is provided above the contact mechanisms, a permanent magnet is provided at the bottom of the mounting platform, and an armature mechanism is provided on the outer side of the permanent magnet; the armature mechanism includes a first armature piece and a second armature piece, and a yoke is provided on the first armature piece and the second armature piece; each group of contact mechanisms includes a moving spring component, a static spring component and a coil terminal; the moving spring component includes a moving spring fixed end and a moving spring piece, and the static spring component includes a static spring fixed end and a normally closed static spring end; the two ends of the coil are respectively connected to the two coil terminals; the moving spring fixed end and the normally closed static spring end are connected in series with the coil terminals; the end of the first armature piece is provided with a first push rod, and the end of the second armature piece is provided with a second push rod. The present invention uses the movement of the moving spring piece of the relay itself to cut off its own driving power supply, thereby achieving the purpose of the relay automatically cutting off its own driving power supply.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic latching relays and relates to a magnetic latching relay capable of automatically cutting off its own driving power supply. Background Art

[0002] The magnetic latching relay is a new type of relay developed in recent years, and is also an automatic switch. Like other electromagnetic relays, it automatically connects and disconnects the circuit. Unlike other electromagnetic relays, the normally closed or normally open state of the magnetic latching relay is completely dependent on the action of permanent magnets, and the switching state conversion is completed by triggering a pulse electrical signal of a certain width.

[0003] When voltage is applied to both ends of the copper coil in the control circuit of the magnetic holding relay, current will flow through the coil, and the iron core and the coil will produce an electromagnetic effect. The armature assembly will be attracted to the yoke under the action of the electromagnetic field. The armature assembly will drive the push rod to move during the action. The push rod pushes the moving reed to disconnect the moving reed and the normally closed static reed, and close it with the normally open static reed. After the contacts are closed, the power supply is cut off, and the armature assembly and the yoke will remain in the attracted state under the action of the permanent magnet.

[0004] The existing magnetic latching relay is driven by a pulse power supply. After the magnetic latching relay is actuated, the power supply is cut off. For the magnetic latching relay driven by a constant current source or a constant voltage source, the external power supply must be supplied to make the magnetic latching relay actuate, and then the power is cut off by external operation. The operation is cumbersome. If there is no external influence, the relay coil will always be energized, and the relay cannot cut off its own driving power supply. The relay will remain energized if the external power is not cut off, which is a waste of energy for the entire circuit. The circuit will become complicated after adding external cut-off, and the cost of the relay will also be higher. Summary of the invention

[0005] The technical problem solved by the present invention is to provide a magnetic latching relay which can automatically cut off its own driving power supply, and use the movement of the dynamic spring of the relay to cut off its own driving power supply, so as to achieve the purpose of automatically cutting off the relay's own driving power supply.

[0006] The present invention is achieved through the following technical solutions:

[0007] A magnetic latching relay capable of automatically cutting off its own driving power supply comprises a base and a shell arranged on the base, wherein a plurality of contact mechanisms are arranged on the base, a mounting platform for mounting a coil frame is arranged above the contact mechanisms, a permanent magnet is arranged at the bottom center of the mounting platform, and an armature mechanism is arranged outside the permanent magnet; the armature mechanism comprises a first armature piece and a second armature piece respectively arranged on both sides of the permanent magnet, and yokes are arranged on opposite surfaces of the first armature piece and the second armature piece;

[0008] Each set of contact mechanisms includes a dynamic spring component, a static spring component and a coil terminal arranged on a base; the dynamic spring component includes a dynamic spring fixed end and a dynamic spring leaf, and the static spring component includes a static spring fixed end and a normally closed static spring end; a normally open static spring leaf is arranged outside the static spring fixed end, and a normally closed static spring leaf is arranged outside the normally closed static spring end; one end of the dynamic spring leaf is connected to the dynamic spring fixed end, and the other end is located between the normally open static spring leaf and the normally closed static spring leaf;

[0009] A through slot is provided in the coil frame, and an iron core is arranged in the through slot; a coil is wound around the coil frame, and the two ends of the coil are respectively connected to the two coil terminals on the base; the fixed end of the movable spring and the normally closed static spring end are connected in series with the coil terminals to realize the series connection of the movable spring piece, the normally closed static spring piece and the coil; the ends of the first armature piece and the second armature piece are both provided with a pushing rod for pushing the movable spring piece to move, and the end of the pushing rod is provided with a pushing member.

[0010] Furthermore, after the coil is energized, the armature mechanism rotates horizontally under the action of the magnetic field, driving the push rod to move, and the pusher on the push rod pushes the moving reed to separate the moving reed from the normally closed static reed, thereby de-energizing the coil; the armature mechanism continues to move under the action of the permanent magnet and its own inertia, and the pusher on the push rod pushes the moving reed to close the moving reed with the normally open static reed.

[0011] Furthermore, the contact mechanism comprises two groups, the two groups of contact mechanisms are respectively a first contact mechanism and a second contact mechanism, and the first contact mechanism and the second contact mechanism are symmetrical about a diagonal line of the base.

[0012] Further, the first contact structure includes a first normally closed static spring end, a first coil terminal, a first dynamic spring fixed end, a first static spring fixed end and a first dynamic spring piece; a first normally open static spring piece is provided on the outer side of the first static spring fixed end, and a first normally closed static spring piece is provided on the outer side of the first normally closed static spring end; one end of the first dynamic spring piece is connected to the first dynamic spring fixed end, and the other end is located between the first normally open static spring piece and the first normally closed static spring piece.

[0013] Furthermore, the second contact structure includes a second static spring fixed end, a second dynamic spring fixed end, a second coil terminal, a second normally closed static spring end and a second dynamic spring piece; a second normally open static spring piece is provided on the outer side of the second static spring fixed end, and a second normally closed static spring piece is provided on the outer side of the second normally closed static spring end; one end of the second dynamic spring piece is connected to the second dynamic spring fixed end, and the other end is located between the second normally open static spring piece and the second normally closed static spring piece.

[0014] Furthermore, the pushing rod is curved and the pushing member is a glass ball.

[0015] Furthermore, there are two coil frames, which are arranged side by side on the mounting platform.

[0016] Furthermore, the first armature piece and the second armature piece are arranged in parallel.

[0017] Furthermore, the first armature piece is provided with a first yoke, the second armature piece is provided with a second yoke, and the connecting line of the first yoke and the second yoke is parallel to the diagonal line of the base.

[0018] Furthermore, a connecting line between the push rod at the end of the first armature piece and the push rod at the end of the second armature piece is parallel to a diagonal line of the base.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] The invention discloses a magnetic latching relay that can automatically cut off its own driving power supply. A normally closed static spring and a moving spring are connected in series at both ends of a coil. After the coil is energized to generate a magnetic field, the armature mechanism rotates under the action of the magnetic field, and a push rod pushes the moving spring to move so that the moving spring is separated from the normally closed static spring. The coil is powered off, and the purpose of the relay cutting off its own driving power supply is achieved. After the coil is powered off, the armature mechanism continues to move under the action of a permanent magnet and movement inertia, driving the push rod to move, and a pusher on the push rod drives the moving spring to move so that the moving spring is closed with the normally open static spring. After the moving spring is closed with the normally open static spring, there is no need to cut off the power to the coil terminal and the normally closed static spring terminal, and the magnetic latching relay has cut off its own driving power supply.

[0021] The present invention has a novel structural design. It adopts a design of connecting the coil in series with the moving reed and the normally closed static reed, and uses the movement of the moving reed of the relay itself to cut off its own driving power supply, thereby achieving the purpose of the relay automatically cutting off its own driving power supply. The present invention connects the moving reed and the normally closed static reed in series at both ends of the coil of the magnetic holding relay. During the movement of the armature mechanism, the pusher on the push rod drives the moving reed to move, so that the moving reed is separated from the normally closed static reed, and the coil is powered off, thereby achieving the purpose of the magnetic holding relay automatically cutting off its own driving power supply. In the absence of pulse drive, the magnetic holding relay can also be driven by a constant voltage source or a constant current source, and there is no need to cut off the power supply of the relay after the relay is actuated, thereby reducing the waste of power resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a magnetic latching relay capable of automatically cutting off its own driving power supply according to the present invention;

[0023] Figure 2 It is a structural schematic diagram of the armature mechanism and the contact mechanism of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the contact mechanism of the present invention;

[0025] Figure 4 A diagram showing the connection relationship between the contact mechanism and the coil of the present invention;

[0026] Figure 5It is a structural schematic diagram of the armature mechanism of the present invention.

[0027] Among them, 1 is the first normally closed static spring end, 2 is the first coil terminal, 3 is the first movable spring fixed end, 4 is the first static spring fixed end, 5 is the second static spring fixed end, 6 is the second movable spring fixed end, 7 is the second coil terminal, 8 is the second normally closed static spring end, 9 is the coil, 10 is the iron core, 11 is the first normally open static spring piece, 12 is the first normally closed static spring piece, 13 is the mounting table, 14 is the second push rod, 16 is the second normally open static spring piece, 17 is the second normally closed static spring piece, 18 is the first movable spring piece, 19 is the second movable spring piece, 20 is the first armature piece, 21 is the permanent magnet, 22 is the first yoke, 23 is the second yoke, 24 is the second armature piece, 25 is the gasket, 26 is the base, 27 is the second pusher, and 28 is the coil frame. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings, which are intended to explain the present invention rather than to limit it.

[0029] See also Figure 1 , Figure 2 and Figure 3 A magnetic latching relay capable of automatically cutting off its own driving power supply comprises a base 26 and a shell covered thereon, the base 26 is provided with a plurality of contact mechanisms, a mounting platform 13 for mounting a coil frame is provided above the contact mechanisms, a permanent magnet 21 is provided at the bottom center of the mounting platform 13, an armature mechanism is provided outside the permanent magnet 21; the armature mechanism comprises a first armature piece 20 and a second armature piece 24 respectively arranged on both sides of the permanent magnet 21, and yoke irons are provided on opposite sides of the first armature piece 20 and the second armature piece 24;

[0030] Each set of contact mechanisms includes a movable spring component, a static spring component and a coil terminal arranged on a base 26; the movable spring component includes a movable spring fixed end and a movable spring leaf, and the static spring component includes a static spring fixed end and a normally closed static spring end; a normally open static spring leaf is arranged outside the static spring fixed end, and a normally closed static spring leaf is arranged outside the normally closed static spring end; one end of the movable spring leaf is connected to the movable spring fixed end, and the other end is located between the normally open static spring leaf and the normally closed static spring leaf;

[0031] The coil frame 28 has a through slot in which an iron core 10 is arranged; a coil 9 is wound around the coil frame 28, and the two ends of the coil 9 are respectively connected to the two coil terminals on the base 26; the fixed end of the movable spring and the normally closed static spring end are connected in series with the coil terminals to realize the series connection of the movable spring leaf, the normally closed static spring leaf and the coil 9; the ends of the first armature piece 20 and the second armature piece 24 are both provided with a pushing rod for pushing the movable spring leaf to move, and the ends of the pushing rod are provided with a pushing member.

[0032] See also Figure 1, is a schematic diagram of the structure of the magnetic latching relay with self-cutting self-driving power supply of the present invention. The magnetic latching relay with self-cutting self-driving power supply of the present invention is composed of a magnetic circuit mechanism, a contact mechanism and mechanical elements. The magnetic circuit mechanism includes an iron core 10, a yoke, an armature mechanism, a permanent magnet 21, a coil 9, a coil terminal, etc. The contact mechanism includes a dynamic spring component and a static spring component, and the mechanical elements include a housing and a base 26; the housing and the base 26 are connected to each other to form a relay as a whole, and the magnetic circuit mechanism and the contact mechanism are both located inside the cavity surrounded by the housing and the base 26.

[0033] The present invention provides a novel magnetic latching relay structure that can automatically cut off its own driving power supply. The structure is novel in design. On the basis of the original relay structure, the structure is redesigned to connect the moving spring, the normally closed static spring and the coil 9 in series. After the coil 9 is energized, the armature mechanism moves under the action of the magnetic field, thereby driving the push rod to move. The push rod pushes the moving spring to move, and the moving spring is separated from the normally closed static spring to cut off the power supply of the coil 9. The moving spring and the normally closed static spring are connected and disconnected by the movement of the push rod to realize the power on and off of the coil 9, thereby realizing the purpose of the magnetic latching relay cutting off its own driving power supply. The structure is different from the original magnetic latching relay structure. The original magnetic latching relay is driven by a pulse power supply, and the power supply is cut off after the magnetic latching relay is actuated. For the magnetic latching relay driven by a constant current source or a constant voltage source, it must be powered by an external source first to make the magnetic latching relay actuate, and then the power is cut off by an external operation. The operation is cumbersome. If there is no external factor, the coil 9 of the relay will be energized all the time, and the relay cannot cut off its own driving power supply by itself. The structure of the present application eliminates the pulse drive of the magnetic latching relay. In the absence of pulse drive, the magnetic latching relay is directly driven by a constant current source or a constant voltage source. After the relay is actuated, the magnetic latching relay can cut off its own driving power supply, simplifying the circuit. For environments without pulse drive, the magnetic latching relay can also work efficiently and energy-efficiently.

[0034] Furthermore, after the coil 9 is energized, the armature mechanism rotates horizontally under the action of the magnetic field, driving the push rod to move, and the pusher on the push rod pushes the moving spring to separate the moving spring from the normally closed static spring, so that the coil 9 is de-energized; the armature mechanism continues to move under the action of the permanent magnet 21 and its own inertia, and the pusher on the push rod pushes the moving spring to close the moving spring with the normally open static spring.

[0035] like Figure 2As shown, a first push rod (not shown in the figure) is provided at the end of the first armature piece 20, and a first push member (not shown in the figure) is provided at the end of the first push rod; a second push rod 14 is provided at the end of the second armature piece 24, and a second push member 27 is provided at the end of the second push rod 14; after the coil 9 is energized, the armature mechanism rotates horizontally under the action of the magnetic field, driving the first push rod and the second push rod 14 to move, and the action of the second push rod 14 is taken as an example for explanation: after the coil 9 is energized, the armature mechanism rotates horizontally under the action of the magnetic field, driving the second push rod 14 to move, and the second push member 27 on the second push rod 14 pushes the second moving spring piece 19 to move, so that the second moving spring piece 19 is separated from the second normally closed static spring piece 17, so that the coil 9 is de-energized; the armature mechanism continues to move under the action of the permanent magnet 21 and its own inertia, and the second push member 27 pushes the second moving spring piece 19 to move, so that the second moving spring piece 19 is closed with the second normally open static spring piece 16. After the second moving spring 19 is closed with the second normally open static spring 16, there is no need to cut off the power to the coil terminal and the second normally closed static spring terminal 8, because the magnetic latching relay has cut off the senior driving power supply by itself.

[0036] Furthermore, the contact mechanism includes two groups, the two groups of contact mechanisms are respectively a first contact mechanism and a second contact mechanism, and the first contact mechanism and the second contact mechanism are symmetrical about the diagonal line of the base 26 .

[0037] Further, the first contact structure includes a first normally closed static spring end 1, a first coil terminal 2, a first dynamic spring fixed end 3, a first static spring fixed end 4 and a first dynamic spring piece 18; a first normally open static spring piece 11 is provided on the outer side of the first static spring fixed end 4, and a first normally closed static spring piece 12 is provided on the outer side of the first normally closed static spring end 1; one end of the first dynamic spring piece 18 is connected to the first dynamic spring fixed end 3, and the other end is located between the first normally open static spring piece 11 and the first normally closed static spring piece 12.

[0038] Furthermore, the second contact structure includes a second static spring fixed end 5, a second dynamic spring fixed end 6, a second coil terminal 7, a second normally closed static spring end 8 and a second dynamic spring piece 19; a second normally open static spring piece 16 is provided on the outer side of the second static spring fixed end 5, and a second normally closed static spring piece 17 is provided on the outer side of the second normally closed static spring end 8; one end of the second dynamic spring piece 19 is connected to the second dynamic spring fixed end 6, and the other end is located between the second normally open static spring piece 16 and the second normally closed static spring piece 17.

[0039] See also Figure 4 , is a connection diagram between the contact mechanism and the coil 9 of the present invention. Figure 4Only a connection diagram of the coil 9 and the contact mechanism is shown, the two ends of the coil 9 are connected to the first coil terminal 2 and the second coil terminal 7 respectively, the second movable spring fixed end 6 and the second normally closed static spring end 8 are connected in series with the coil terminal 7, so as to realize the series connection of the second movable spring piece 19, the second normally closed static spring piece 17 and the coil 9. The present invention connects the movable spring piece, the normally closed static spring piece and the coil 9 in series, and after the coil 9 is energized, the armature mechanism moves under the action of the magnetic field, thereby driving the push rod to move, and the pusher on the push rod drives the movable spring piece to move, and the movable spring piece is separated from the normally closed static spring piece to cut off the power of the coil 9, so as to realize the purpose of the magnetic latching relay to cut off the senior driving power supply by itself.

[0040] Furthermore, the pushing rod is curved and the pushing member is a glass ball.

[0041] See also Figure 2 , is a schematic diagram of the structure of the armature mechanism and the contact mechanism of the present invention. The first push rod and the second push rod 14 are both curved, and the first push member and the second push member 27 are both glass balls. The first push rod and the second push rod 14 can be welded or bonded to the armature plate, and there is a push member on each of the first push rod and the second push rod 14, and the push member can be a glass ball. When the first push rod and the second push rod 14 are in motion, the glass ball will hit the moving spring, thereby pushing the moving spring to move.

[0042] Furthermore, there are two coil frames 28, and the two coil frames 28 are arranged side by side on the mounting platform 13. Figure 1 A gasket 25 is provided above the coil frame 28 , a through slot is provided in the coil frame 28 , and the iron core 10 passes through the gasket 25 and penetrates the coil frame 28 , and is located in the through slot of the coil frame 28 .

[0043] It should be noted that the magnetic latching relay of the present invention that can cut off its own driving power supply can be a double coil or a single coil. The magnetic latching relay of the present invention that can cut off its own driving power supply mainly uses direct current to play the role of a pulse power supply through structural redesign. The coil uses direct current to cut off the power supply of its own coil through the movement of the moving spring. When there are two coils, the connection relationship between the two coils and the contact mechanism is: the two ends of one coil are respectively connected to the first coil terminal 2 and the second normally closed static spring end 8, and the two ends of the other coil are respectively connected to the first coil terminal 2 and the first static spring fixed end 4. The first coil terminal 2 is the common end of the two coils 9. Only one coil of the two coils is energized at a time, thereby realizing the forward and reverse rotation of the armature mechanism.

[0044] Furthermore, the first armature piece 20 and the second armature piece 24 are arranged in parallel.

[0045] See also Figure 5 , is a schematic diagram of the structure of the armature mechanism of the present invention. The armature mechanism is wound around Figure 5The central circular hole of the permanent magnet 21 rotates, and the armature mechanism rotates in the horizontal direction. The moving spring piece and the normally closed static spring piece are connected and disconnected by the movement of the push rod to realize the power on and off of the coil 9.

[0046] Furthermore, the first armature piece 20 is provided with a first yoke 22 , the second armature piece 24 is provided with a second yoke 23 , and the connecting line between the first yoke 22 and the second yoke 23 is parallel to the diagonal line of the base 26 .

[0047] Furthermore, a connecting line between the push rod at the end of the first armature piece 20 and the push rod at the end of the second armature piece 24 is parallel to a diagonal line of the base 26 .

[0048] Specifically, the push rod includes a first push rod and a second push rod 14. The first push rod is arranged at the end of the first armature piece 20, and the second push rod 14 is arranged at the end of the second armature piece 24. The positions of the first push rod and the second push rod 14 are opposite, and the connecting line between the first push rod and the second push rod 14 is parallel to the diagonal line of the base 26.

[0049] Furthermore, the first normally open static reed 11, the first normally closed static reed 12, the second normally open static reed 16, the second normally closed static reed 17, the first movable reed 18 and the second movable reed 19 are all made of conductive materials.

[0050] According to the above technical scheme, the present invention provides a magnetic latching relay that can automatically cut off its own driving power supply. The normally closed static reed and the moving reed are connected in series at both ends of the coil 9. After the coil 9 is energized to generate a magnetic field, the armature mechanism rotates under the action of the magnetic field, and the push rod pushes the moving reed to move so that the moving reed is separated from the normally closed static reed, so that the coil 9 is powered off, thereby achieving the purpose of the relay cutting off its own driving power supply. After the coil 9 is powered off, the armature mechanism continues to move under the action of the permanent magnet 21 and the inertia of movement, driving the push rod to move, and the pusher on the push rod drives the moving reed to move, so that the moving reed is closed with the normally open static reed.

[0051] The present invention has a novel structural design, adopts a design of connecting the coil 9 in series with the moving spring and the normally closed static spring, and uses the movement of the moving spring of the relay itself to cut off its own driving power supply, so as to achieve the purpose of the relay automatically cutting off its own driving power supply. The present invention connects the moving spring and the normally closed static spring in series at both ends of the coil 9 of the magnetic latching relay, respectively. During the movement of the armature mechanism, the pusher on the push rod drives the moving spring to move, so that the moving spring is separated from the normally closed static spring, and the coil is powered off, so as to achieve the purpose of the magnetic latching relay cutting off its own driving power supply. In the absence of pulse drive, the magnetic latching relay can also be driven by a constant voltage source or a constant current source, and there is no need to cut off the power supply of the relay after the relay is actuated, thereby reducing the waste of power resources.

[0052] The magnetic latching relay cuts off its own driving power supply. There is no need to design a new circuit to make additional configurations to cut off the power supply. The requirements for external power supply are reduced, and the input of pulse power supply is no longer required. The entire design and circuit will become simple. The magnetic latching relay cuts off its own driving power supply. The internal structure of the relay is used, and there is no need to install new devices. It is simple and easy, reducing the power consumption of the relay. The relay is also more energy-saving, and it is more reliable to use its own motion structure to control its own driving power supply.

[0053] The above embodiments are preferred examples for implementing the present invention, and the present invention is not limited to the above embodiments. Any non-essential additions and substitutions made by those skilled in the art based on the technical features of the technical solution of the present invention shall fall within the protection scope of the present invention.

Claims

1. A magnetic latching relay that automatically cuts off its own driving power supply, characterized in that: The invention comprises a base (26) and a shell covering the base (26), wherein a plurality of contact mechanisms are arranged on the base (26), a mounting platform (13) for mounting a coil frame (28) is arranged above the contact mechanisms, a permanent magnet (21) is arranged at the center of the bottom of the mounting platform (13), and an armature mechanism is arranged outside the permanent magnet (21); the armature mechanism comprises a first armature piece (20) and a second armature piece (24) respectively arranged on both sides of the permanent magnet (21), and yokes are arranged on opposite surfaces of the first armature piece (20) and the second armature piece (24); Each set of contact mechanisms comprises a movable spring component, a static spring component and a coil terminal arranged on a base (26); the movable spring component comprises a movable spring fixed end and a movable spring leaf, and the static spring component comprises a static spring fixed end and a normally closed static spring end; a normally open static spring leaf is arranged outside the static spring fixed end, and a normally closed static spring leaf is arranged outside the normally closed static spring end; one end of the movable spring leaf is connected to the movable spring fixed end, and the other end is located between the normally open static spring leaf and the normally closed static spring leaf; The coil frame (28) has a through slot in which an iron core (10) is arranged; a coil (9) is wound around the coil frame, and two ends of the coil (9) are respectively connected to two coil terminals on the base (26); the fixed end of the movable spring and the normally closed static spring are connected in series with the coil terminals to realize the series connection of the movable spring sheet, the normally closed static spring sheet and the coil (9); the ends of the first armature sheet (20) and the second armature sheet (24) are both provided with a pushing rod for pushing the movable spring sheet to move, and the ends of the pushing rod are provided with a pushing member.

2. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 1, characterized in that: After the coil (9) is energized, the armature mechanism rotates horizontally under the action of the magnetic field, driving the push rod to move, and the pusher on the push rod pushes the moving spring, so that the moving spring is separated from the normally closed static spring, and the coil (9) is de-energized; the armature mechanism continues to move under the action of the permanent magnet (21) and its own inertia, and the pusher on the push rod pushes the moving spring, so that the moving spring is closed with the normally open static spring.

3. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 1, characterized in that: The contact mechanism comprises two groups, the two groups of contact structures are respectively a first contact mechanism and a second contact mechanism, and the first contact mechanism and the second contact mechanism are symmetrical about the diagonal line of the base (26).

4. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 3, characterized in that: The first contact mechanism comprises a first normally closed static spring end (1), a first coil terminal (2), a first movable spring fixed end (3), a first static spring fixed end (4) and a first movable spring piece (18); a first normally open static spring piece (11) is arranged outside the first static spring fixed end (4), and a first normally closed static spring piece (12) is arranged outside the first normally closed static spring end (1); one end of the first movable spring piece (18) is connected to the first movable spring fixed end (3), and the other end is located between the first normally open static spring piece (11) and the first normally closed static spring piece (12).

5. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 3, characterized in that: The second contact mechanism comprises a second static spring fixed end (5), a second dynamic spring fixed end (6), a second coil terminal (7), a second normally closed static spring end (8) and a second dynamic spring piece (19); a second normally open static spring piece (16) is arranged outside the second static spring fixed end (5), and a second normally closed static spring piece (17) is arranged outside the second normally closed static spring end (8); one end of the second dynamic spring piece (19) is connected to the second dynamic spring fixed end (6), and the other end is located between the second normally open static spring piece (16) and the second normally closed static spring piece (17).

6. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 1, characterized in that: The pushing rod is curved, and the pushing piece is a glass ball.

7. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 1, characterized in that: There are two coil frames (28), and the two coil frames (28) are arranged side by side on the mounting platform (13).

8. The magnetic latching relay with automatic self-disconnection of its own driving power supply according to claim 1, characterized in that: The first armature piece (20) and the second armature piece (24) are arranged in parallel.

9. The magnetic latching relay capable of automatically cutting off its own driving power supply according to claim 8, characterized in that: The first armature piece (20) is provided with a first yoke (22), the second armature piece (24) is provided with a second yoke (23), and the connecting line between the first yoke (22) and the second yoke (23) is parallel to the diagonal line of the base (26).

10. The magnetic latching relay capable of automatically cutting off its own driving power supply according to claim 8, characterized in that: The connecting line of the push rod at the end of the first armature piece (20) and the push rod at the end of the second armature piece (24) is parallel to the diagonal line of the base (26).

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