Direct-current magnetic latching relay for communication power supply

Abstract

The utility model discloses a direct-current magnetic latching relay for a communication power supply, which comprises a base, a movable reed and a static reed arranged at the front part in the base, a movable contact arranged on the movable reed, a static contact arranged on the static reed, a shunt arranged at the front part of the base and connected with the movable reed, and a magnetic blow-out mounting groove arranged at one side of the front part of the base. The magnetic blow-out mounting groove is formed by outwards extending a circle of surrounding plate from the side surface of the base, the magnetic blow-out mounting groove is opposite to the movable contact and the static contact in position, a magnetic blow-out assembly is embedded in the magnetic blow-out mounting groove and comprises magnetic steel and a shielding plate, the magnetic steel is embedded in the shielding plate, and the magnetic pole surface of the magnetic steel is attached to the surface of the base and is opposite to the movable contact and the static contact in position. The shunt and the relay are integrally formed, so that the space occupation of a communication power supply can be effectively reduced, the installation is more convenient, the magnetic fields of several surfaces of the magnetic steel can be shielded through the shielding plates, the magnetic fields of the magnetic steel are concentrated on the magnetic pole surfaces, and the arc extinguishing effect can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic latching relays, in particular to a DC magnetic latching relay used for a communication power supply. Background Art

[0002] The magnetic latching relay is a new type of relay developed in recent years. It is also an automatic switch. Like other relays, it automatically connects and disconnects the circuit. The difference is that the conversion of the normally closed or normally open state of the magnetic latching relay is completed by triggering a pulse electrical signal of a certain width.

[0003] When the current and voltage reach a certain value, the relay contacts are prone to arcing when in action. The arc has a thermal effect, which can easily cause contact ablation and bonding, shortening the life of the relay. In addition, during the arcing process, electromagnetic radiation will be generated to the outside, causing interference to surrounding equipment. Therefore, rapid arc extinguishing during contact action is a technical issue that needs to be considered.

[0004] Among the circuits that relays break, one is an AC circuit and the other is a DC circuit. The AC arc generated by the relay breaking the AC circuit is relatively easy to extinguish due to the existence of the zero-break phenomenon, while the DC arc generated when breaking the DC circuit has no zero-break phenomenon. If there is no external force intervention, the arc will maintain a stable burning state and is not easy to extinguish.

[0005] For example, Chinese patent publication number CN217361465U discloses a DC relay with a magnetic blowout arc extinguishing function, including a housing, a magnetic circuit mechanism, a driving mechanism and a contact mechanism, the housing including a base and an upper cover, the magnetic circuit mechanism, the driving mechanism and the contact mechanism are mounted on the base, the contact mechanism includes a static spring and a corresponding moving spring, the static spring is fixedly connected with a static contact, the moving spring is fixedly connected with a moving contact, the magnetic force generated by the magnetic circuit mechanism causes the driving mechanism to operate, the driving mechanism drives the moving spring to operate so that the moving contact and the static contact are engaged or disengaged, a groove is provided on the upper end face of the upper cover next to the static contact and the moving contact, the groove is composed of the upper end face of the upper cover and a circle of enclosure plates extending outward, a magnetic steel is embedded in the groove, and the magnetic pole direction of the magnetic steel is perpendicular to the current direction when the moving contact and the static contact are in contact. The utility model has a magnetic blowout arc extinguishing function without increasing the volume of the DC relay body and without changing the original DC relay structure layout, thereby extending the life of the relay.

[0006] DC relays are generally used in communication power supplies. However, the existing relays and the relays and shunts in the above-mentioned patents usually adopt a split structure, which results in more space being occupied in the communication power supply and inconvenient installation. At the same time, since the magnet has multiple faces, the magnetic field of the magnet will diverge to the magnetic pole and several other faces outside the magnetic pole at the same time, resulting in the magnetic field of the magnet being unable to be better concentrated on the magnetic pole face, resulting in poor arc extinguishing effect. Utility Model Content

[0007] The utility model provides a DC magnetic latching relay for communication power supply to solve the problems raised in the above background technology.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A DC magnetic latching relay for a communication power supply comprises a base, a moving reed and a static reed are arranged at the front of the base, a moving contact is arranged on the moving reed, and a static contact is arranged on the static reed, a shunt is arranged at the front of the base, and the shunt is connected to the moving reed, a magnetic blowing installation groove is arranged on one side of the front of the base, the magnetic blowing installation groove is composed of a circle of surrounding plates extending outward from the side of the base, the magnetic blowing installation groove is opposite to the positions of the moving contact and the static contact, a magnetic blowing assembly is embedded in the magnetic blowing installation groove, the magnetic blowing assembly comprises a magnet and a shielding plate, the magnet is embedded in the shielding plate, and the magnetic pole surface of the magnet is in contact with the surface of the base and opposite to the positions of the moving contact and the static contact.

[0010] Preferably, the shielding plate is arranged in a "U"-shaped structure, the opening of the shielding plate is arranged toward the moving contact and the static contact, and the shielding plate surrounds the top, side and bottom surfaces of the magnetic steel.

[0011] Preferably, the shielding plate is made of iron.

[0012] Beneficial Effects

[0013] The above one or more technical solutions in a DC magnetic latching relay for a communication power supply provided by an embodiment of the utility model have at least one of the following technical effects:

[0014] Through the above technical scheme, the utility model integrates the shunt and the relay into one, which can effectively reduce the space occupied by the communication power supply and make installation more convenient; the magnetic fields of several surfaces of the magnet except the magnetic poles can be shielded by the shielding plate, so that the magnetic field of the magnet is concentrated on the magnetic pole surface, thereby effectively improving the arc extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the magnetic blowing assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the magnetic blowing assembly of the utility model;

[0019] Figure 5 This is a schematic diagram of the explosion structure of the magnetic blowing assembly of the utility model;

[0020] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0021] 1. Base; 2. Moving reed; 3. Static reed; 4. Moving contact; 5. Static contact; 6. Shunt; 7. Magnetic blow installation slot; 8. Magnetic blow assembly; 9. Magnet; 10. Shielding plate. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1-5 As shown, it is a structural schematic diagram of a DC magnetic latching relay for communication power supply in a preferred embodiment of the utility model;

[0026] In this embodiment, a base 1 is included, a moving spring 2 and a static spring 3 are provided in the front of the base 1, a moving contact 4 is provided on the moving spring 2, and a static contact 5 is provided on the static spring 3. A shunt 6 is provided in the front of the base 1, and the shunt 6 is made of pure copper and manganese copper. One end of the shunt 6 extends into the base, and the shunt 6 is connected to the moving spring 2 by riveting. A magnetic blowing installation groove 7 is integrally provided on one side of the front of the base 1, and the magnetic blowing installation groove 7 is formed from the side of the base 1 to the outside. It is composed of a circle of extending surrounding plates, the magnetic blowing installation groove 7 is opposite to the positions of the moving contact 4 and the static contact 5, and a magnetic blowing assembly 8 is embedded in the magnetic blowing installation groove 7. The magnetic blowing assembly 8 includes a magnetic steel 9 and a shielding plate 10. The magnetic steel 9 is embedded in the shielding plate 10, and the magnetic pole surface of the magnetic steel 9 is in contact with the surface of the base 1 and opposite to the positions of the moving contact 4 and the static contact 5. The arc generated when the moving and static points 4 and the static contact 5 are in action is extinguished by the magnetic field of the magnetic pole surface of the magnetic steel 9.

[0027] In this embodiment, the shielding plate 10 is set as a "U"-shaped structure, and the opening of the shielding plate 10 is set toward the moving contact 4 and the static contact 5. The shielding plate 10 surrounds the top, side and bottom of the magnet 9. The magnetic fields of several surfaces of the magnet 9 except the magnetic poles are shielded by the shielding plate 10, so that the magnetic field of the magnet 9 is concentrated on the magnetic pole surface, thereby effectively improving the arc extinguishing effect.

[0028] In this embodiment, the shielding plate 10 is made of iron material, and the magnetic field 10 on other surfaces of the magnetic steel 9 can be isolated by the shielding plate 10 .

[0029] The utility model provides a DC magnetic latching relay for communication power supply. Its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0030] Technologies not described in detail in the present invention are all well-known technologies. Those skilled in the art can easily implement the present invention based on understanding this specification, and the contents shown in the drawings are part of this specification.

[0031] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A DC magnetic latching relay for communication power supply, comprising a base (1), a moving reed (2) and a stationary reed (3) provided at the front of the base (1), a moving contact (4) provided on the moving reed (2), and a stationary contact (5) provided on the stationary reed (3), characterized in that: A shunt (6) is provided at the front of the base (1), and the shunt (6) is connected to the moving spring (2). A magnetic blowing installation groove (7) is provided on one side of the front of the base (1), and the magnetic blowing installation groove (7) is formed by a circle of surrounding plates extending outward from the side of the base (1). The magnetic blowing installation groove (7) is opposite to the positions of the moving contact (4) and the static contact (5). A magnetic blowing assembly (8) is embedded in the magnetic blowing installation groove (7), and the magnetic blowing assembly (8) includes a magnetic steel (9) and a shielding plate (10). The magnetic steel (9) is embedded in the shielding plate (10), and the magnetic pole surface of the magnetic steel (9) is in contact with the surface of the base (1) and is opposite to the positions of the moving contact (4) and the static contact (5).

2. A DC magnetic latching relay for communication power supply according to claim 1, characterized in that: The shielding plate (10) is arranged in a "U"-shaped structure, and the opening of the shielding plate (10) is arranged toward the moving contact (4) and the static contact (5). The shielding plate (10) surrounds the top, side and bottom surfaces of the magnetic steel (9).

3. A DC magnetic latching relay for communication power supply according to claim 1, characterized in that: The shielding plate (10) is made of iron.

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