Backup protection switch moving contact mechanism

Abstract

A back-up protection switch moving contact mechanism is characterized in that the back-up protection switch moving contact mechanism comprises a base, a rotating shaft is arranged on the base, a rotating block is arranged on the rotating shaft, a limiting rod is arranged on the rotating block, an impact block is arranged on the rotating block, a containing groove is formed in the base, a limiting shaft is arranged on the base, a rotating clamping block is arranged on the limiting shaft, and the rotating clamping block is arranged on the limiting shaft. A placement groove is formed in the base, a protection spring is arranged in the placement groove, and a connecting contact is arranged on the rotating block; the impact block drives the connecting block to rotate anticlockwise around the rotating shaft, the connecting contact connected with the connecting block in a buckled mode rotates synchronously around the rotating shaft, tripping occurs on the connecting contact, the backup protection switch trips, the surge protection device is switched off, electrical equipment is protected, and it is avoided that when triggering is not conducted for a long time, a plastic piece is aged and loses elasticity, and the service life of the plastic piece is prolonged. And when the short circuit occurs, the situation that the response cannot be timely carried out can be avoided, and the danger is reduced.

Description

Technical Field

[0001] This utility model relates to the field of backup protection switch technology, and in particular to the moving contact mechanism of backup protection switch. Background Technology

[0002] Backup protection refers to protection used to disconnect the fault when the main protection or circuit breaker fails to operate. When a fault occurs in a circuit, the protection on the circuit will instantly send a signal to disconnect the circuit's switching element; this immediately acting protection is the main protection. If the main protection fails to operate for various reasons, after a very short delay, another protection will start and operate, tripping the faulty circuit; this protection is the backup protection. Multiple sets of protection can be set for a single circuit to ensure the safe operation of the circuit.

[0003] However, the elastic part of the existing moving contact mechanism is made of plastic, and the elasticity is provided by the elastic deformation of the plastic part. When the backup protection switch is not triggered for a long time, the plastic part will age and lose its elasticity, causing the backup protection switch to fail. When a short circuit occurs, it cannot react in time, causing danger. To solve the above problems, a backup protection switch moving contact mechanism is proposed. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a backup protection switch moving contact mechanism, characterized by comprising a base, a rotating shaft, a rotating block, a limiting rod, an impact block, a storage groove, a limiting shaft, a rotating locking block, a placement groove, a protective spring, and a connecting contact. The base is provided with a rotating shaft, the rotating shaft with a rotating block, the rotating block with a limiting rod, the rotating block with an impact block, the base with a storage groove, the base with a limiting shaft, the limiting shaft with a rotating locking block, the base with a placement groove, the placement groove containing a protective spring, and the rotating block with a connecting contact.

[0005] Furthermore, there are two rotating shafts fixedly installed at both ends of the base, and the two rotating shafts are located on the same axis. A rotating block is sleeved on the left rotating shaft, and a connecting contact is sleeved on the right rotating shaft. The rotating block and the connecting contact are connected by a snap fastener.

[0006] Furthermore, a limiting rod is fixedly provided on the inner side of the rotating block, and the end of the limiting rod has a stepped structure. The limiting shaft is located above the left rotating shaft. The rotating block is sleeved on the limiting shaft. The cross-section of the rotating block is elliptical, and the end of the rotating block has a stepped protrusion. The rotating block and the limiting rod are coupled through the stepped structure.

[0007] Furthermore, the impact block is fixedly mounted at the rear end of the rotating block, and a storage groove is provided at the rear end of the base, with the impact block coupled to the storage groove;

[0008] Furthermore, a mounting groove is provided on the left side surface of the base, one end of the protective spring is fixedly installed in the mounting groove, and the other end is tightly attached to the lower end of the limiting rod.

[0009] The beneficial effects of this utility model are:

[0010] This invention utilizes an electromagnetic mechanism in the backup protection switch to rapidly eject the ejector pin, which then strikes the impact block. The impact block drives the rotating block to rotate counterclockwise around the rotation axis. The limiting rod of the rotating block flips backward, separating from the rotating locking block. Under the influence of gravity, the rotating locking block hangs naturally around the limiting post. During rotation, the impact block engages with the receiving groove, and the limiting rod compresses the protective spring in the receiving groove, generating elastic force that returns the rotating block to its original position. Simultaneously with the rotation of the rotating block, the connecting contact head, which is latched to the rotating block, rotates synchronously around the rotation axis. When the connecting contact head disengages, the backup protection switch trips, and the surge protector disconnects, protecting the electrical equipment. This prevents the backup protection switch from failing due to aging and loss of elasticity of the plastic parts when the switch is not triggered for a long time, thus reducing the risk of a short circuit. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the backup protection switch moving contact mechanism of this utility model;

[0012] Figure 2 This is an exploded structural diagram of the backup protection switch moving contact mechanism of this utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the backup protection switch moving contact mechanism after use.

[0014] As shown in the figure: 1. Base, 2. Rotating shaft, 3. Rotating block, 4. Limiting rod, 5. Impact block, 6. Storage groove, 7. Limiting shaft, 8. Rotating locking block, 9. Placement groove, 10. Protective spring, 11. Connecting contact head. Detailed Implementation

[0015] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. Example 1

[0018] This utility model provides a backup protection switch moving contact mechanism, characterized in that it includes a base 1, a rotating shaft 2, a rotating block 3, a limiting rod 4, an impact block 5, a storage groove 6, a limiting shaft 7, a rotating locking block 8, a placement groove 9, a protective spring 10, and a connecting contact 11. The base 1 is provided with a rotating shaft 2, the rotating shaft 2 is provided with a rotating block 3, the rotating block 3 is provided with a limiting rod 4, the rotating block 3 is provided with an impact block 5, the base 1 is provided with a storage groove 6, the base 1 is provided with a limiting shaft 7, the limiting shaft 7 is provided with a rotating locking block 8, the base 1 is provided with a placement groove 9, the placement groove 9 is provided with a protective spring 10, and the rotating block 3 is provided with a connecting contact 11.

[0019] Furthermore, there are two rotating shafts 2, which are fixedly installed at both ends of the base 1, and the two rotating shafts 2 are located on the same axis. A rotating block 3 is sleeved on the left rotating shaft 2, and a connecting contact head 11 is sleeved on the right rotating shaft 2. The rotating block 3 and the connecting contact head 11 are connected by a snap fastener.

[0020] Furthermore, a limiting rod 4 is fixedly installed on the inner side of the rotating block. The end of the limiting rod 4 has a stepped structure. The limiting shaft 7 is located above the rotating shaft 2 on the left side. The rotating block 8 is sleeved on the limiting shaft 7. The cross section of the rotating block 8 is elliptical. The end of the rotating block 8 has a stepped protrusion. The rotating block 8 and the limiting rod 4 are coupled through the stepped structure.

[0021] Furthermore, the impact block 5 is fixedly installed at the rear end of the rotating block, and the base 1 has a storage groove 6 at the rear end, with the impact block 5 coupled to the storage groove 6.

[0022] Furthermore, a mounting groove 9 is provided on the left side surface of the base 1, one end of the protective spring 10 is fixedly installed in the mounting groove 9, and the other end is tightly attached to the lower end of the limiting rod 4. Example 2

[0023] In use, this device is installed inside the housing of the backup protection switch and remains in its initial state. In the initial state, the rotating block 8 is held horizontally, and the stepped protrusion at the end of the rotating block 8 is coupled to the limiting rod 4 through the stepped structure. The protective spring 10 is in a slightly compressed state, ensuring that the contact head 11 remains stationary. In the event of excessive current, the electromagnetic mechanism in the backup protection switch is activated, causing the pin to pop out quickly and strike the impact block 5. The impact block 5 drives the rotating block to rotate counterclockwise around the rotating shaft 2. The limiting rod 4 of the rotating block flips backward and separates from the rotating block 8. The rotating block 8 hangs down naturally around the limiting post under the action of gravity. During the rotation, the impact block 5 fits into the storage groove 6. The limiting rod 4 squeezes the protective spring 10 in the placement groove 9 to generate elastic force, so that the rotating block returns to its original position. At the same time as the rotating block rotates, the connecting contact 11, which is connected to the rotating block, rotates synchronously around the rotating shaft 2. The connecting contact 11 is disengaged, the backup protection switch trips, and the surge protector disconnects to protect the electrical equipment.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The various components mentioned in this utility model are common technologies in the existing field. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A backup protective switch moving contact mechanism, characterized by, Including base, rotation axis, rotating block, limiting rod, impact block, storage slot, limiting shaft, rotating block, installation slot, protection spring, connecting contact, rotation axis is provided on the base, rotating block is provided on the rotation axis, limiting rod is provided on the rotating block, impact block is provided on the rotating block, storage slot is provided on the base, limiting shaft is provided on the base, rotating block is provided on the limiting shaft, installation slot is provided on the base, protection spring is provided in the installation slot, connecting contact is provided on the rotating block.

2. The back-up protection switch moving contact mechanism of claim 1, wherein, The rotation axis has two and is fixedly arranged at the two ends of the base, and the two rotation axes are located on the same axis, the rotating block is sleeved on the left rotation axis, the connecting contact is sleeved on the right rotation axis, and the rotating block and the connecting contact are connected through buckling.

3. The back-up protection switch moving contact mechanism of claim 1, wherein, The inner side of the rotating block is fixedly provided with a limiting rod, the end of the limiting rod has a stepped structure, the limiting shaft is located above the left rotation axis, the rotating block is sleeved on the limiting shaft, the cross section of the rotating block is oval, the end of the rotating block has a stepped protrusion, and the rotating block and the limiting rod are coupled through the stepped structure.

4. The back-up protection switch moving contact mechanism of claim 1, wherein, The impact block is fixedly arranged at the rear end of the rotating block, the storage slot is arranged at the rear end of the base, and the impact block is coupled with the storage slot.

5. The back-up protection switch moving contact mechanism of claim 1, wherein, The surface of the left side of the base is provided with an installation slot, one end of the protection spring is fixedly arranged in the installation slot, and the other end is tightly attached to the lower end of the limiting rod.

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