Connecting rod structure for undervoltage release

Abstract

The connecting rod structure comprises an upper cover plate and a lower cover plate, an iron core and a magnet yoke are arranged in the lower cover plate, an iron core push rod is arranged on the iron core, a beating rod and an interlocking piece are arranged in the upper cover plate, a plurality of round holes are formed in the interlocking piece, one end of a tension spring is arranged on a boss of the upper cover plate, and the other end of the tension spring is arranged on the magnet yoke. A push rod is arranged on the upper portion of the lower cover plate, and the rotary supporting piece is arranged in the magnet yoke hole of the lower cover plate. The linkage mechanism is simple in structure and reasonable in design, linkage of the connecting rods is achieved through the rotary supporting piece and the linkage piece, accurate force value is guaranteed through the tension spring, the linkage piece is provided with a plurality of holes connected with the tension spring at the same time, random adjustment can be achieved according to products of customers, parts do not need to be replaced, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of undervoltage releasers, in particular to a connecting rod structure for undervoltage releasers. Background Art

[0002] An undervoltage relay or release is a relay that causes a mechanical switch to open or close with or without delay when the terminal voltage of the relay or release drops to a predetermined value. Currently, most of the industry uses a torsion spring and an iron core for synchronous connection. The force error of the torsion spring is large. If the plastic shell product of a single customer can meet the requirements, but if the plastic shell products of different customers are different, it cannot meet the requirements. It is necessary to replace parts or redesign the release, which increases costs. Summary of the invention

[0003] The utility model aims to solve the above technical problems and provides a connecting rod structure for an undervoltage release.

[0004] In order to achieve the above technical objectives and meet the above technical requirements, the technical solution adopted by the utility model is: a connecting rod structure for an undervoltage release, including an upper cover plate and a lower cover plate, an iron core and a yoke are arranged in the lower cover plate, an iron core push rod is arranged on the iron core, a hitting rod and a locking piece are arranged in the upper cover plate, a plurality of circular holes are arranged on the locking piece, one end of the tension spring is arranged at the boss of the upper cover plate, and the other end is arranged at the circular hole, a push rod is arranged at the upper part of the lower cover plate, and a rotating support is arranged in the yoke hole of the lower cover plate.

[0005] Preferably, a groove is arranged at the front end of the push rod, and the upper end of the locking piece is arranged in the groove.

[0006] Preferably, the push rod is arranged in a 7-shape.

[0007] Preferably, the number of the circular holes is at least 2.

[0008] Compared with the traditional structure, the utility model has the following beneficial effects: simple structure, reasonable design, connecting rod interlocking is achieved by rotating the supporting parts and the interlocking parts, accurate force value is guaranteed by the tension spring, and a plurality of holes for connecting the tension springs are provided in the interlocking parts, which can be adjusted at will according to the customer's products without replacing parts, easy to use and cost-reducing. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 This is a schematic diagram of the structure of the upper cover assembly of the utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the lower cover assembly of the utility model;

[0012] Figure 4 This is a schematic diagram of the structure of the utility model after removing the upper cover plate;

[0013] Figure 5 This is the front view of the utility model after removing the upper cover;

[0014] Figure 6 This is a state diagram of the utility model after being installed in a plastic shell product;

[0015] In the figure: 1. hitting rod, 2. interlocking part, 21. round hole, 3. rotating support, 4. tension spring, 5. push rod, 51. groove, 6. upper cover plate, 7. lower cover plate, 8. iron core, 9. yoke, 10. iron core push rod. DETAILED DESCRIPTION

[0016] The utility model is further described below.

[0017] See attached Figure 1 A connecting rod structure for an undervoltage release comprises an upper cover plate 6 and a lower cover plate 7, wherein an iron core 8 and a yoke 9 are arranged in the lower cover plate 7, an iron core push rod 10 is arranged on the iron core 8, a hitting rod 1 and a chain member 2 are arranged in the upper cover plate 6, a plurality of circular holes 21 are arranged on the chain member 2, one end of a tension spring 4 is arranged at a boss of the upper cover plate 6, and the other end is arranged at the circular hole 21, a push rod 5 is arranged on the upper part of the lower cover plate 7, and a rotating support member 3 is arranged in the yoke hole of the lower cover plate 7.

[0018] In this preferred embodiment, a groove 51 is provided at the front end of the push rod 5 , and the upper end of the locking member 2 is disposed in the groove 51 .

[0019] In this preferred embodiment, the push rod 5 is arranged in a 7-shape.

[0020] In this preferred embodiment, the number of the circular holes 21 is at least two.

[0021] In specific implementation, when the plastic shell product is normally powered on, the iron core push rod 10 extends outward and opens, pushing the rotating support 3 to rotate clockwise, and the front side of the rotating support 3 pushes the chain member 2 to rotate, and the rotating support 3 overcomes the tension spring force and remains fixed with the chain member 2. Since the upper end of the chain member 2 is set in the groove 51 of the push rod 5, the push rod 5 and the chain member 2 maintain a synchronous position. When the main circuit encounters a voltage undervoltage, the iron core push rod 10 is attracted, and under the action of the tension spring force, the rotating support 3 and the chain member 2 break the fixed state and rotate in the opposite direction, thereby pushing the push rod 5 to move, hit the traction rod of the plastic shell product, and disconnect it, cutting off the main circuit current and protecting the safety of electrical equipment.

[0022] The above embodiments of the present invention are merely examples to clearly illustrate the present invention, but are not intended to limit the protection scope of the present invention. All equivalent technical solutions also belong to the scope of the present invention. The patent protection scope of the present invention should be defined by the claims.

Claims

1. A connecting rod structure for an undervoltage release, comprising an upper cover plate (6) and a lower cover plate (7), characterized in that: An iron core (8) and a yoke (9) are arranged in the lower cover plate (7); an iron core push rod (10) is arranged on the iron core (8); a driving rod (1) and a locking member (2) are arranged in the upper cover plate (6); a plurality of circular holes (21) are arranged on the locking member (2); one end of the tension spring (4) is arranged at a boss of the upper cover plate (6), and the other end is arranged at the circular hole (21); a push rod (5) is arranged on the upper part of the lower cover plate (7); and a rotating support member (3) is arranged in the yoke hole of the lower cover plate (7).

2. The connecting rod structure for the undervoltage release according to claim 1, characterized in that: The front end of the push rod (5) is provided with a groove (51), and the upper end of the locking member (2) is arranged in the groove (51).

3. The connecting rod structure for the undervoltage release according to claim 1 or 2, characterized in that: The push rod (5) is arranged in a 7-shape.

4. The connecting rod structure for the undervoltage release according to claim 1, characterized in that: The number of the circular holes (21) is set to be at least 2.

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