Magnetic latching relay

Abstract

The utility model discloses a magnetic latching relay, which comprises a relay inner core, and a support frame is arranged in the middle of the relay inner core. The support frame is connected with a rocker shaft pin, and the relay inner core is also provided with a movable contact piece and a static contact piece; the supporting frame is further provided with a positioning piece. The positioning piece comprises a supporting plate, and a first baffle and a second baffle are arranged on the bottom face of the supporting plate. Magnets are arranged on the first baffle and the second baffle; a shaft pin hole is formed in the middle of the warping plate, and a swing piece is arranged above the shaft pin hole. When the swinging sheet is in contact with the magnet on the first baffle plate or the swinging sheet is in contact with the magnet on the second baffle plate, the swinging sheet can be attracted by the magnet, so that the position of the warping plate is locked; on the basis, the relay is simpler in structure while the position of the warping plate is locked, and the positioning piece is movably mounted on the supporting frame, so that the positioning piece is simple and convenient to mount and replace, and the relay is worthy of popularization and application.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a magnetic latching relay. Background Art

[0002] The conventional magnetic latching relay, such as the prior art with patent number CN117393382A, includes a cover, an electromagnetic coil assembly, a joystick assembly, and a push plate. One end of the push plate is connected to the moving contact assembly. The cover is fixedly connected to the static sheet and the lead-out sheet, and the static sheet is fixedly provided with a static contact; the moving contact assembly includes a moving contact, a moving contact support, and a spring. The moving contact is fixed to the moving contact support. The moving contact support is in a telescopic fit relative to the end of the push plate, and the direction of the telescopic fit is consistent with the sliding direction of the corresponding slide groove of the push plate. A spring for tightening the telescopic state of the two is provided between the moving contact support and the push plate, that is, when the moving contact is not in contact with the static contact, the moving contact support is in a stretched-out position relative to the end of the push plate under the action of the spring. When the push plate slides until the moving contact is in contact with the static contact of the cover, the moving contact support is in a contracted state relative to the end of the push plate. The moving contact support is metal and is connected to the lead-out sheet of the cover through a flexible wire. Through the above structure, it is not difficult to find that the structure for closing or separating the moving contact and the stationary contact is relatively complex, and the structure for closing or separating the moving contact and the stationary contact is difficult to maintain. Utility Model Content

[0003] The purpose of the utility model is to provide a magnetic latching relay to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a magnetic holding relay, comprising a relay core and a protective cover covering the outside of the relay core, and a support frame is provided in the middle of the relay core; the support frame is connected to a seesaw axis pin, and a moving contact piece and a static contact piece are provided on the relay core, and a positioning member is also provided on the support frame; the positioning member comprises a support plate, a first baffle plate and a second baffle plate are provided on the bottom surface of the support plate, and magnets are provided on the first baffle plate and the second baffle plate; a swinging piece is also provided on the seesaw, and the swinging piece swings between the first baffle plate and the second baffle plate.

[0005] As a preferred technical solution of the present utility model: a mounting hole for mounting the magnet is provided in the middle of the first baffle plate and the second baffle plate.

[0006] As a preferred technical solution of the utility model: it also includes bolts, and the bolts pass through the support plate and are connected to the support frame to fix the positioning member on the upper end of the support frame.

[0007] As a preferred technical solution of the utility model: a shaft pin seat is also provided in the inner core of the relay, and the bottom of the moving contact piece is rotatably mounted on the shaft pin seat, and the moving contact piece is separated from the static contact piece by a torsion spring provided in the shaft pin seat.

[0008] As a preferred technical solution of the utility model: an inspection opening is also provided on the protective cover, and the inspection opening is sealed by a cover plate.

[0009] By adopting the above technical scheme, the beneficial effect of the utility model is that when the swing piece contacts the magnet on the first baffle or when the swing piece contacts the magnet on the second baffle, the magnet can be used to absorb the swing piece to achieve locking of the seesaw position; based on this, the relay has a simpler structure while achieving seesaw position locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0011] Figure 2 It is an exploded schematic diagram of the main structure of the utility model;

[0012] Figure 3 This is a schematic diagram of the main structure of the inner core of the relay of the utility model;

[0013] Figure 4 This is a schematic diagram of the exploded structure of the positioning member of the utility model;

[0014] Figure 5 It is a schematic diagram of the main structure of the seesaw of the utility model.

[0015] In the figure: 1. protective cover; 2. cover plate; 3. relay core; 30. positioning piece; 31. support frame; 32. moving contact piece; 33. stationary contact piece; 34. torsion spring; 35. axle pin seat; 36. seesaw; 37. swing piece; 38. support plate; 39. mounting hole; 310. first baffle plate; 311. second baffle plate; 312. magnet; 313. bolt; 4. inspection port. DETAILED DESCRIPTION

[0016] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0017] See also Figure 1-5 The utility model provides an embodiment: a magnetic latching relay, comprising a relay core 3 and a protective cover 1 covering the outside of the relay core 3, and a support frame 31 is provided in the middle of the relay core 3; the support frame 31 is connected to the pivot pin of the seesaw 36, and a moving contact piece 32 and a static contact piece 33 are provided on the relay core 3, and a positioning member 30 is also provided on the support frame 31; the positioning member 30 comprises a support plate 38, and a first baffle 310 and a second baffle 311 are provided on the bottom surface of the support plate 38, and magnets 312 are provided on the first baffle 310 and the second baffle 311; a swinging piece 37 is also provided on the seesaw 36, and the swinging piece 37 swings between the first baffle 310 and the second baffle 311.

[0018] In summary, when the electromagnetic coil is energized, the armature attracts one end of the seesaw 36, and the seesaw 36 moves downward until the moving contact piece 32 contacts the stationary contact piece 33. At this time, the magnet 312 in the first baffle 310 attracts the swing piece 37 on the seesaw 36, completing the locking of the position of the seesaw 36; conversely, when the electromagnetic coil is energized, the armature is urged to move upward, thereby driving the seesaw 36 to rotate until the moving contact piece 32 separates from the stationary contact piece 33. At this time, the magnet 312 in the second baffle 311 attracts the swing piece 37, completing the separation of the moving contact piece 32 from the stationary contact piece 33, and locking the position of the seesaw 36. Based on this, the device has a simpler structure than the prior art.

[0019] Furthermore, since the middle parts of the first baffle 310 and the second baffle 311 are both provided with mounting holes 39 for mounting the magnet 312, the reliable operation of the magnet 312 can be ensured. Specifically, after the magnet 312 is installed, it is glued to the mounting hole 39 with glue, so the stability of the magnet 312 during operation can be further improved.

[0020] Furthermore, the bolt 313 passes through the support plate 38 and is connected to the support frame 31 to fix the positioning member 30 to the upper end of the support frame 31. Therefore, the disassembly and assembly of the positioning member 30 and the support frame 31 also becomes simple and convenient, so that the user can inspect and replace the positioning member 30.

[0021] On the base column of the above scheme, a shaft pin seat 35 is further provided in the relay inner core 3, and the bottom of the movable contact piece 32 is rotatably mounted on the shaft pin seat 35, and the movable contact piece 32 is separated from the stationary contact piece 33 by a torsion spring 34 provided in the shaft pin seat 35. Due to the provision of the torsion spring 34, the movable contact piece 32 can always be in contact with one end of the seesaw 36, so that the movable contact piece 32 and the seesaw 36 can be reliably linked.

[0022] At the same time, since the protective cover 1 is also provided with an inspection port 4, and the inspection port 4 is sealed by the cover plate 2, the positioning member 30 can be inspected and replaced by disassembling the cover plate 2 after the device is installed.

[0023] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A magnetic latching relay, characterized in that: It comprises a relay core (3) and a protective cover (1) covering the outside of the relay core (3), and a support frame (31) is provided in the middle of the relay core (3); The support frame (31) is connected to the seesaw (36) by an axle pin, and a moving contact piece (32) and a stationary contact piece (33) are provided on the relay inner core (3), and a positioning piece (30) is also provided on the support frame (31); The positioning member (30) comprises a support plate (38), a first baffle (310) and a second baffle (311) are provided on the bottom surface of the support plate (38), and magnets (312) are provided on both the first baffle (310) and the second baffle (311); The seesaw (36) is also provided with a swinging piece (37), and the swinging piece (37) swings between the first baffle (310) and the second baffle (311).

2. A magnetic latching relay according to claim 1, characterized in that: The middle parts of the first baffle plate (310) and the second baffle plate (311) are both provided with mounting holes (39) for mounting the magnet (312).

3. A magnetic latching relay according to claim 2, characterized in that: It also includes a bolt (313), and the bolt (313) passes through the support plate (38) and is connected to the support frame (31), so as to fix the positioning member (30) on the upper end of the support frame (31).

4. A magnetic latching relay according to claim 1, 2 or 3, characterized in that: A shaft pin seat (35) is also provided in the relay inner core (3), and the bottom of the movable contact piece (32) is rotatably mounted on the shaft pin seat (35), and the movable contact piece (32) is urged to separate from the stationary contact piece (33) by a torsion spring (34) provided in the shaft pin seat (35).

5. A magnetic latching relay according to claim 4, characterized in that: The protective cover (1) is also provided with an inspection opening (4), and the inspection opening (4) is sealed by a cover plate (2).

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