Relay with large-distance structure

Abstract

The utility model relates to a relay with a large-distance structure. The relay comprises a base, a coil assembly, a magnetic steel assembly and an electric connection assembly, the electric connection assembly comprises a movable assembly and a static assembly. The movable assembly comprises a movable spring mounting rack, a movable spring sheet and a movable contact. The static assembly comprises a static reed and a static contact. And the movable spring mounting rack is provided with a connecting part. By arranging the movable spring mounting rack, the movable contact spring is arranged in the movable spring mounting rack. And one end of the movable spring mounting frame is provided with the connecting part which is connected with the swing arm through a U-shaped connecting rod. The rotating shaft is arranged on the movable spring mounting frame and is arranged close to the connecting part, and the connecting part swings in a small amplitude, so that the movable contact swings in a large amplitude, and the opening distance between the movable contact and the static contact is increased. And the swing arm abuts against the movable spring mounting rack, so that the stability when the movable contact is connected with the static contact is improved, and virtual connection is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field, especially a relay with big open distance structure. BACKGROUND

[0002] Magnetic latching relay is a new type of relay developed in recent years, which is used for automatic switching on and off of circuit. The normally closed or normally open state of magnetic latching relay completely depends on the action of permanent magnet, and the switching state is triggered by a certain width of pulse electric signal. Therefore, the magnetic latching relay adopts a bistable structure, and the permanent magnet inside provides suction to maintain the on and off states, without additional energy to maintain the on and off states. Magnetic latching relay is mainly used in automatic control and remote control occasions, such as intelligent electric meter, LED lighting, air conditioning and automobile, etc. In the existing magnetic latching relay, the following defects exist. The open distance is too small. The open distance between the moving and static contacts of the current relay is about 1mm when it is opened, and there are more products with an open distance of 0.8mm. For switches applied to terminal power distribution main circuit control, the national standard has mandatory requirements for contact open distance and dielectric performance. The existing magnetic latching relay cannot fully meet these requirements due to the small open distance, and the dielectric performance is poor and does not have isolation function. Especially when the electrical life is completed or other experiments are performed, and the contacts are contaminated, the dielectric performance will further decrease. Limited by the contact open distance and dielectric performance, the application range of this relay is limited. Moreover, it is difficult to further increase the open distance due to the existing relay structure. The existing relay structure is complex, the process is difficult, and it is easy to cause inconsistent products during production, thereby causing unstable product performance.

[0003] A magnetic latching relay with large contact open distance is disclosed in Chinese patent CN201520145172.8, which comprises a rotating mechanism, a static magnetic conductor, a moving contact assembly, a static contact assembly and a coil. The rotating mechanism is rotated by the force generated by the reverse magnetic field formed by the current in the coil. The magnetic latching relay further comprises a flexible conductor connected to the moving contact assembly, and the moving contact assembly is directly fixed to the rotating mechanism and forms an integral body with the rotating mechanism. The magnetic latching relay with large contact open distance of the utility model adopts a larger contact open distance, thereby having good dielectric experimental performance and isolation function.

[0004] However, the open distance design between the moving contact and the static contact of the above-mentioned scheme still has defects, and the static spring plate is easily shaken during contact, causing poor contact. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a relay with a large open distance structure to solve the above technical problems.

[0006] The relay with large opening distance structure comprises a base, a coil assembly arranged in the base, a magnetic steel assembly arranged on one side of the coil assembly, and an electric connection assembly arranged on one side of the magnetic steel assembly. The magnetic steel assembly comprises a permanent magnet rotatably arranged between two yokes, and a swing arm arranged on the end face of the permanent magnet away from the electromagnetic coil. The electric connection assembly comprises a moving assembly rotatably arranged in the base, and a static assembly embedded in the base. The moving assembly comprises a moving spring mounting frame rotatably arranged in the base, a group of moving spring sheets inserted in the moving spring mounting frame, and a group of moving contacts arranged on the end of the moving spring sheets facing the static assembly. The static assembly comprises a static spring sheet embedded in the base, and two static contacts arranged on the static spring sheet corresponding to the positions of the moving contacts. The end of the moving spring mounting frame away from the moving contacts is provided with a connecting part, and the connecting part and the swing arm are connected through a U-shaped connecting rod. Two rotation shafts are symmetrically arranged on the moving spring mounting frame, and the two rotation shafts are arranged close to the connecting part.

[0007] Further, the base comprises a base body, and a plurality of partitions arranged in the base body.

[0008] Further, the coil assembly comprises a coil skeleton, an electromagnetic coil wound on the coil skeleton, and a yoke arranged at both ends of the coil skeleton.

[0009] Further, the outer contours of the two yokes are L-shaped and oppositely arranged.

[0010] Further, the end of the swing arm is arc-shaped.

[0011] Further, the two ends of the U-shaped connecting rod are movably arranged in the swing arm and the connecting part, respectively.

[0012] Further, the end of the connecting part is provided with an arc chamfer.

[0013] Compared with existing technologies, the relay with a large opening distance structure provided by this utility model sets up the moving spring mounting bracket, in which the moving spring is housed. A connecting part is provided at one end of the moving spring mounting bracket, and the connecting part is connected to the swing arm via a U-shaped connecting rod. Two rotating shafts are provided on the moving spring mounting bracket, and the rotating shafts are positioned close to the connecting part. This allows the swing arm to drive the connecting part to swing slightly within a limited space, thereby causing the moving contact to swing significantly, thus increasing the opening distance between the moving contact and the stationary contact and avoiding loose connections. Furthermore, when the moving contact and the stationary contact abut, the swing arm abuts against the moving spring mounting bracket, improving the stability of the connection between the moving contact and the stationary contact and preventing loose connections. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a relay with a large opening distance provided by this utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of the moving component of a relay with a large opening distance.

[0016] Figure 3 for Figure 1 A schematic diagram of the magnet assembly of a relay with a large opening distance. Detailed Implementation

[0017] The specific embodiments of this utility model are described in further detail below. It should be understood that the description of the embodiments of this utility model herein is not intended to limit the scope of protection of this utility model.

[0018] like Figures 1 to 3 The diagram shown is a structural schematic of a relay with a large opening distance provided by this utility model. The relay with a large opening distance includes a base 10, a coil assembly 20 disposed in the base 10, a magnet assembly 30 disposed on one side of the coil assembly 20, and an electrical connection assembly 40 disposed on one side of the magnet assembly 30. It is conceivable that the relay with a large opening distance also includes other functional structures, such as terminals, fixing covers, etc., which are technologies known to those skilled in the art and will not be described in detail here.

[0019] The base 10 includes a base body 11 and a plurality of partitions 12 disposed within the base body 11. The base body 11 is used to house the coil assembly 20, the magnet assembly 30, and the electrical connection assembly 40. The partitions 12 are used to provide a fixed support surface for the aforementioned components.

[0020] The coil assembly 20 comprises a coil frame 21, an electromagnetic coil 22 arranged on the coil frame 21, and a yoke 23 arranged at both ends of the coil frame 21. The electromagnetic coil 22 is connected with an external power supply device, and generates an electromagnetic field after being powered on, which interacts with the magnetic steel assembly 30 to drive the magnetic steel assembly 30 to rotate. The two yokes 23 are oppositely arranged in an L-shaped manner. The yoke 23 is used in cooperation with the magnetic steel assembly 30, which will be described below.

[0021] The magnetic steel assembly 30 comprises a permanent magnet 31 rotatably arranged between the two yokes 23, and a swing arm 32 arranged on the end face of the permanent magnet 31 away from the electromagnetic coil 22. The permanent magnet 31 interacts with the magnetic field generated by the electromagnetic coil 22, thereby swinging until it abuts against the yoke 23 on one side to limit the rotation angle of the permanent magnet 31, so as to avoid excessive turning to contact the electromagnetic coil 22 and cause damage. The end of the swing arm 32 is arc-shaped, which matches the swing angle of the swing arm 32 and avoids knocking against the base body 11.

[0022] The electrical connection assembly 40 comprises a moving assembly 41 rotatably arranged in the base 11, and a static assembly 42 embedded in the base 11.

[0023] The moving assembly 41 comprises a moving spring mounting frame 411 rotatably arranged in the base 11, a group of moving spring sheets 412 inserted into the moving spring mounting frame 411, and a group of moving contacts 413 arranged on the end of the moving spring sheet 412 towards the static assembly 42.

[0024] The static assembly 42 comprises a static spring sheet 421 embedded in the base 11, and two static contacts 422 arranged on the static spring sheet 421 corresponding to the positions of the moving contacts 413. The static spring sheet 421 is connected with an external device, and the static contacts 422 can be connected with the moving contacts 413 to turn on the circuit to power on the external device.

[0025] The moving spring mounting frame 411 is used to fix the moving spring sheet 412 and drive the moving spring sheet 412 and the moving contacts 413 to swing. A connecting portion 414 is arranged on the end of the moving spring mounting frame 411 away from the moving contacts 413, and the connecting portion 414 is connected with the swing arm 32 through a U-shaped connecting rod 415. The end of the connecting portion 414 is provided with an arc chamfer, which is used to avoid knocking against the base body 11 and has a relief effect.

[0026] Two ends of the U-shaped connecting rod 415 are movably arranged in the swing arm 32 and the connecting part 414 respectively, so that the permanent magnet 31 can drive the moving spring mounting frame 411 to swing when swinging.

[0027] When the permanent magnet 31 drives the moving spring mounting frame 411 to swing, the swing arm 32 abuts against the moving spring mounting frame 411, thereby improving the stability of the moving contact 413 and the stationary contact 422 when being in contact.

[0028] In use, the electromagnetic coil 22 is powered to generate a magnetic field, which interacts with the positive and negative poles of the permanent magnet 31, thereby driving the permanent magnet 31 to swing and driving the moving spring mounting frame 411 to swing along the rotating shaft 416.

[0029] Compared with the prior art, the relay with a large opening distance structure provided by the utility model drives the moving spring mounting frame 411 to swing by arranging the moving spring mounting frame 411, arranging the moving spring piece 412 in the moving spring mounting frame 411, arranging the connecting part 414 at one end of the moving spring mounting frame 411, connecting the connecting part 414 and the swing arm 32 through the U-shaped connecting rod 415, arranging the rotating shaft 416 on the moving spring mounting frame 411, and arranging the rotating shaft 416 close to the connecting part 414, so that the swing arm 32 drives the connecting part 414 to swing in a limited space, the moving contact 413 swings greatly, the opening distance between the moving contact 413 and the stationary contact 422 is increased, and false contact is avoided.

[0030] The above merely is the preferred embodiment of the present application, and is not used for limiting the protection scope of the present application, and any modification, equivalent replacement or improvement etc. within the spirit of the present application are covered in the claim scope of the present application.

Claims

1. A relay with a large opening distance structure, characterized in that: The relay with large open distance structure comprises a base, a coil assembly arranged in the base, a magnetic steel assembly arranged on one side of the coil assembly, and an electric connection assembly arranged on one side of the magnetic steel assembly, the coil assembly comprises a coil frame, an electromagnetic coil arranged on the coil frame, and yokes arranged at both ends of the coil frame, the magnetic steel assembly comprises a permanent magnet rotatably arranged between the two yokes, and a swing arm arranged on the end face of the permanent magnet away from the electromagnetic coil, the electric connection assembly comprises a moving assembly rotatably arranged in the base, and a static assembly embedded in the base, the moving assembly comprises a moving spring mounting frame rotatably arranged in the base, a group of moving spring sheets inserted in the moving spring mounting frame, and a group of moving contacts arranged on the end of the moving spring sheets towards the static assembly, the static assembly comprises a static spring sheet embedded in the base, and two static contacts arranged on the static spring sheet corresponding to the positions of the moving contacts, the end of the moving spring mounting frame away from the moving contacts is provided with a connecting part, the connecting part and the swing arm are connected through a U-shaped connecting rod, and two rotating shafts are symmetrically arranged on the moving spring mounting frame, and the two rotating shafts are arranged close to the connecting part.

2. The relay having a large opening distance structure according to claim 1, characterized by: The base comprises a base body and a plurality of partitions arranged in the base body.

3. The relay having a large opening distance structure according to claim 1, wherein: The outer contours of the two yokes are L-shaped and oppositely arranged.

4. The relay having a large opening distance structure according to claim 1, wherein: The end of the swing arm is arc-shaped.

5. The relay having a large opening distance structure according to claim 1, wherein: The two ends of the U-shaped connecting rod are movably arranged in the swing arm and the connecting part, respectively.

6. The relay having a large off-set structure according to claim 1, wherein: The end of the connecting part is provided with an arc chamfer.

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