Integrated terminal block for magnetic latching relay

Abstract

The present invention discloses an integrated terminal block for a magnetic latching relay, which includes a relay housing and a terminal block inserted into the relay housing. The terminal block includes a phase power input terminal and a phase power output terminal. A coil connection is inserted at the ends of the phase power output terminal and the phase power input terminal. The shape of the coil connection is the same as the shape of the jack in the relay housing. The coil connection is fixedly clamped in the jack in the relay housing. The ends of the phase power output terminal and the phase power input terminal are inserted into the relay housing and fixedly clamped in the coil connection. The structure of the present invention is reasonably arranged. The phase power output terminal and the phase power input terminal are directly inserted into the jack of the relay housing and fixed to the coil connection, thereby reducing the need for screw or riveting operations, which is beneficial to reducing the occurrence of detachment, ensuring the stable reliability and service life during use, and having strong applicability and good practicability.

Description

Technical Field

[0001] The present invention belongs to the technical field of magnetic latching relays, and particularly relates to an integrated terminal block for a magnetic latching relay. Background Art

[0002] A magnetic latching relay is a control component that, under the action of a drive control signal, uses the interaction and relative movement of an electromagnetic coil and a permanent magnet to close and open a circuit, and can still maintain the on or off state of the circuit after the drive control signal disappears. It has the characteristics of energy saving and stable operation, and is widely used in power system protection devices and various remote control, telecontrol, and communication devices. It is particularly widely used in smart electricity meters as the main component of smart electricity meters.

[0003] The lead-out terminals of existing magnetic latching relays and the terminal blocks of smart electricity meters are generally connected by screws, welding, or riveting. These connections all have quality risks such as screw detachment, insufficient welding bonding force, and rivet detachment. These quality problems of poor connection will cause the temperature at the connection to rise, and then lead to the failure of the relay and the failure of the smart electricity meter. Summary of the Invention

[0004] The purpose of the present invention is to provide an integrated terminal block for a magnetic latching relay with reasonable structural settings and strong applicability.

[0005] The technical solution for achieving the purpose of the present invention is an integrated terminal block for a magnetic latching relay, including a relay housing, and a terminal block inserted into the relay housing. The terminal block includes a phase electricity input terminal and a phase electricity output terminal. At the ends of the phase electricity output terminal and the phase electricity input terminal, a coil connection is inserted. The shape of the coil connection is the same as the shape of the jack in the relay housing. The coil connection is clamped and fixed in the jack in the relay housing. The ends of the phase electricity output terminal and the phase electricity input terminal are inserted into the relay housing and are clamped and fixed in the coil connection.

[0006] A locking convex block is provided on the relay housing. An insertion through groove communicating with the jack in the relay housing is provided in the locking convex block. A locking hole is provided on the locking convex block. A locking hole is fixed in the middle of the phase electricity input terminal and the phase electricity output terminal. The phase electricity input terminal and the phase electricity output terminal are inserted into the jack in the relay housing from the insertion through groove, and the locking hole coincides with the locking hole and is fixed by a locking screw.

[0007] The phase electricity output terminal is in a straight sheet shape. A cable fixing hole is fixed at the outer end of the phase electricity output terminal. The locking hole is in the middle of the phase electricity output terminal. A limiting convex block is provided at the inner end of the phase electricity output terminal. The end of the phase electricity output terminal is inserted onto the coil connection and is limited by the limiting convex block.

[0008] The phase electricity input terminal includes an insertion card and a connection piece. The connection piece is connected to one end of the insertion card and is arranged at a right angle to the insertion card. The locking hole is arranged on the insertion card. A wire through-hole is fixed at the outer end of the connection piece. Pressing protrusions are fixed on the symmetric side edges of the insertion card. When the insertion card is inserted into the connection coil, it is limited and fixed through the pressing protrusions.

[0009] Both the phase electricity input terminal and the phase electricity output terminal are copper terminals.

[0010] The phase electricity input terminal includes an A-phase input terminal, a B-phase input terminal, and a C-phase input terminal; the phase electricity output terminal includes an A-phase output terminal, a B-phase output terminal, and a C-phase output terminal.

[0011] The present invention has positive effects: The structure of the present invention is reasonably arranged. Its phase electricity output terminal and phase electricity input terminal are directly inserted into the jacks of the relay housing and fixed to the connection coil, thereby reducing the need for screw or riveting operations, which is beneficial to reducing the occurrence of detachment, ensuring the stable reliability and service life during use, and having strong applicability and good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments in conjunction with the drawings, where:

[0013] Figure 1 is a schematic structural diagram of the present invention;

[0014] Figure 2 is an installation schematic diagram of the structure of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] (Embodiment 1)

[0016] Figure 1 and Figure 2 show a specific embodiment of the present invention, where Figure 1 is a schematic structural diagram of the present invention; Figure 2 is an installation schematic diagram of the structure of the present invention.

[0017] See Figure 1 and Figure 2, An integrated terminal block for a magnetic latching relay, comprising a relay housing 1 and a terminal block 2 inserted into the relay housing. The terminal block 2 includes a phase power input terminal 21 and a phase power output terminal 22. A coil connection 3 is inserted and fixed at the ends of the phase power output terminal and the phase power input terminal. The shape of the coil connection 3 is the same as that of the jack 4 in the relay housing 1. The coil connection is fixed in the jack in the relay housing. The ends of the phase power output terminal and the phase power input terminal are inserted into the relay housing and are inserted and fixed in the coil connection.

[0018] A locking projection 5 is provided on the relay housing. An insertion through slot 6 communicating with the jack in the relay housing is provided inside the locking projection. A locking hole 7 is provided on the locking projection. A locking hole 8 is fixed in the middle of the phase power input terminal and the phase power output terminal. The phase power input terminal and the phase power output terminal are inserted into the jack in the relay housing from the insertion through slot, and the locking hole coincides with the locking hole and is fixed by a locking screw.

[0019] The phase power output terminal 22 is in the shape of a straight piece. A cable fixing hole (not shown, used for connecting and fixing the cable, which is common general knowledge in the prior art) is fixed at the outer end of the phase power output terminal. The locking hole is in the middle of the phase power output terminal. A limiting projection 10 is provided at the inner end of the phase power output terminal. The end of the phase power output terminal is inserted onto the coil connection and is limited by the limiting projection.

[0020] The phase power input terminal 21 includes an insertion card 11 and a connection piece 12. The connection piece is connected to one end of the insertion card and is set at a right angle to the insertion card. The locking hole is provided on the insertion card. A wire through hole (not shown, used for connecting and fixing the cable, which is common general knowledge in the prior art) is fixed at the outer end of the connection piece. A pressing projection 9 is fixed on the symmetric side edges of the insertion card. When the insertion card is inserted into the coil connection, it is limited and fixed by the pressing projection.

[0021] Both the phase power input terminal and the phase power output terminal are copper terminals.

[0022] The phase power input terminal includes an A-phase input terminal, a B-phase input terminal, and a C-phase input terminal; the phase power output terminal includes an A-phase output terminal, a B-phase output terminal, and a C-phase output terminal.

Claims

1. An integrated terminal block for a magnetic latching relay, comprising a relay housing and a terminal block inserted into the relay housing, characterized in that: The terminal block includes phase power input terminals and phase power output terminals. A connection coil is inserted at the ends of the phase power output terminals and the phase power input terminals. The shape of the connection coil is the same as the shape of the jack in the relay housing. The connection coil is snap-fixed in the jack in the relay housing. The ends of the phase power output terminals and the phase power input terminals are inserted into the relay housing and snap-fixed in the connection coil. A locking projection is provided on the relay housing. An insertion through slot communicating with the jack in the relay housing is provided in the locking projection. A locking hole is provided on the locking projection. A locking hole is fixed in the middle of the phase power input terminals and the phase power output terminals. The phase power input terminals and the phase power output terminals are inserted into the jack in the relay housing from the insertion through slot, and the locking hole coincides with the locking hole and is fixed by a locking screw. The phase power output terminal is in the shape of a straight plate. A cable fixing hole is fixed at the outer end of the phase power output terminal. The locking hole is in the middle of the phase power output terminal. A limiting projection is provided at the inner end of the phase power output terminal. The end of the phase power output terminal is inserted onto the connection coil and limited by the limiting projection.

2. The integrated terminal block for a magnetic latching relay according to claim 1, wherein: The phase power input terminal includes an insertion card and a connection piece. The connection piece is connected to one end of the insertion card and is arranged at a right angle to the insertion card. The locking hole is provided on the insertion card. A wire perforation is fixed at the outer end of the connection piece. A pressing projection is fixed on the symmetric side edges of the insertion card. When the insertion card is inserted into the connection coil, it is limited and fixed by the pressing projection.

3. The integrated terminal block for a magnetic latching relay according to claim 2, wherein: Both the phase power input terminals and the phase power output terminals are copper terminals.

4. The integrated terminal block for a magnetic latching relay according to claim 3, characterized in that: The phase power input terminals include an A-phase input terminal, a B-phase input terminal, and a C-phase input terminal; the phase power output terminals include an A-phase output terminal, a B-phase output terminal, and a C-phase output terminal.

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