Conductive assembly

Abstract

A conductive assembly. The device comprises at least two contact knives which are arranged side by side and form a moving contact; the connecting plates comprise at least a first connecting plate and a second connecting plate which are arranged side by side, one ends of the first connecting plate and the second connecting plate are spliced to form a wiring part, and the other ends of the first connecting plate and the second connecting plate serve as a welding part; and one end of each flexible connector is welded and fixed with the contact knife, and the other end of each flexible connector is welded and fixed with the welding part of the connecting plate. The connecting plate is divided into two parts which are respectively connected with the corresponding contact knives, so that each connecting plate only bears half current, the current density is reduced, local heating is reduced, the overall current-carrying capacity is improved, the connecting plate is suitable for a high-current scene, and the problem of over-high temperature rise caused by current concentration is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electric appliance technical field, concretely relates to a conductive assembly. BACKGROUND

[0002] The molded case circuit breaker is also called device type circuit breaker, all parts are sealed in the plastic shell, and the contact system, under voltage release and auxiliary release are mostly designed in modular structure.

[0003] At present, the conductive assembly of the large shell frame circuit breaker with the rated current higher than 1000A in the market is generally composed of multiple contact blades in parallel because of the large current, and the multiple contact blades of the moving contact are directly welded and fixed with the connecting plate through the soft connection, the single connecting plate has high temperature rise when passing through the large current, and the existing solution is to solve the temperature rise problem by thickening or widening the connecting plate, but the thickened or widened connecting plate is limited by the size of the molded case circuit breaker base, so it is difficult to realize in some products. SUMMARY

[0004] In view of the defects in the prior art, the utility model aims at providing a conductive assembly.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A conductive assembly comprises:

[0007] At least two contact blades are arranged side by side and constitute a moving contact;

[0008] A connecting plate comprises at least two first connecting plates and second connecting plates arranged side by side, one end of the first connecting plate and the second connecting plate is formed into a wiring part, and the other end is a welding part;

[0009] A plurality of soft connections are welded and fixed at one end with the contact blade, and welded and fixed at the other end with the welding part of the connecting plate.

[0010] The soft connection is a wire, and each contact blade is provided with two wires.

[0011] The two wires are welded and fixed with the front and back surfaces of the connecting plate respectively.

[0012] The first connecting plate and the second connecting plate are the same in size.

[0013] The first connecting plate is provided with a first semicircular hole at the wiring part, the second connecting plate is provided with a second semicircular hole at the corresponding wiring part, and the first semicircular hole and the second semicircular hole cooperate to form a matching hole.

[0014] The wiring part and the welding part are arranged in parallel, and a transition part is arranged between the two.

[0015] The connecting portion surface is provided with a plurality of anti-skid lines.

[0016] The first and second connecting plates are provided with fixing holes.

[0017] The side edges of the first and second connecting plates are closely arranged.

[0018] The beneficial effects of the utility model are as follows: the connecting plate is divided into two parts, and is connected with corresponding contact blades respectively, so that each connecting plate only bears half of the current, the current density is reduced, local heating is reduced, the overall current carrying capacity is improved, it is applicable to high current scenes, and the problem of excessively high temperature rise caused by current concentration is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a side view of the utility model.

[0020] Figure 2 It is a structure schematic view of the utility model.

[0021] Figure 3 It is a structure schematic view of the connecting plate of the utility model.

[0022] Figure 4 It is a structure schematic view of the utility model applied to a molded case circuit breaker. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship and movement condition between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0025] As shown in Figure 4 A conductive assembly is applied to a contact system of a molded case circuit breaker, specifically, applied to a movable contact assembly in the contact system, and the circuit breaker applying the conductive assembly of the embodiment comprises a circuit breaker shell, an operating mechanism and a contact system, wherein the contact system comprises a movable contact assembly and a static contact assembly, the movable contact assembly is in transmission connection with the operating mechanism, and linkage is realized.

[0026] As shown in Figure 1 andFigure 2 As shown, the conductive assembly includes a contact blade 100, a flexible connection and a coupling plate.

[0027] Two contact blades 100 are used in this embodiment and arranged side by side to form a movable contact, and the contact blades are provided with movable contact points. The end of the contact blade 100 away from the movable contact point is connected to the coupling plate 300 through a flexible connection, and the plurality of contact blades are fixedly connected and are each provided with a rotating shaft hole. The rotating shaft passes through the rotating shaft holes of the contact blades arranged side by side and is fixed in the cavity of the contact support, and the plurality of contact blades can rotate around the rotating shaft.

[0028] A gap is provided between each contact blade to form an isolation between adjacent contact blades. The end of the contact blade welded to the flexible connection is provided with a welding surface, and the welding surface is slightly recessed to allow the flexible connection to be directly welded to the recessed welding surface, thereby ensuring the flatness of the entire contact blade and facilitating neat arrangement.

[0029] The coupling plate 300 includes at least two first coupling plates 310 and second coupling plates 320 arranged side by side. One end of the first coupling plate 310 and the second coupling plate 320 is combined to form a wiring portion 350, and the other end serves as a welding portion 330.

[0030] The first coupling plate and the second coupling plate are arranged side by side, dividing the original one coupling plate into two, and the two are completely identical in size to avoid uneven distribution of current.

[0031] The plurality of flexible connections 200 are welded and fixed at one end to the contact blade 100 and at the other end to the welding portion 330 of the coupling plate 300. The flexible connection is directly welded to the coupling plate to form an integral structure, eliminating the need for intermediate connecting parts, thereby reducing material costs and improving assembly efficiency.

[0032] The flexible connection and the contact blade are connected by welding, but other connection methods can also be used.

[0033] The flexible connection 200 is a wire, and each contact blade 100 is provided with two wires. By increasing the number of wires, the current flowing through the two wires is divided, thereby reducing the heat generation of the wires.

[0034] The two wires are welded and fixed to the front and back surfaces of the coupling plate 300, respectively. The welding of the wires is arranged on the front and back surfaces, respectively, so that the current on the front and back surfaces of the coupling plate is consistent, and the temperature rise at the connection between the coupling plate and the flexible connection is consistent, thereby ensuring stability.

[0035] As shown in Figure 3 The first coupling plate 310 is provided with a first semicircular hole at the wiring portion 350, and the second coupling plate 320 is provided with a second semicircular hole at the corresponding wiring portion 350. The first semicircular hole and the second semicircular hole cooperate to form a matching hole 360, which is used in cooperation with a bolt to fix the wiring.

[0036] The wiring part 350 is arranged in parallel with the welding part 330, and a transition part 340 is arranged between the two, which reduces the height of the wiring part to the level of the base ground, and better fixes the connecting part.

[0037] The surface of the wiring part 350 is provided with a plurality of anti-skid lines, which improves the occlusal force of the wiring and ensures the connection reliability.

[0038] The first coupling plate 310 and the second coupling plate 320 are provided with fixing holes 370, and the number and position of the fixing holes of the two are consistent, which can firstly fix and connect the coupling plate with the base, and secondly ensure the consistency of the parameters of the two coupling plates.

[0039] The side edges of the first coupling plate 310 and the second coupling plate 320 are closely arranged, which ensures that the size of the whole coupling plate meets the installation requirements.

[0040] The embodiments should not be regarded as a limitation of the utility model, but any improvement based on the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. An electrically conductive assembly, characterized by: It includes: At least two contact blades (100) are arranged side by side and constitute a movable contact; A connecting plate (300) includes at least two first connecting plates (310) and second connecting plates (320) arranged side by side, one end of the first connecting plate (310) and the second connecting plate (320) is spliced to form a wiring part (350), and the other end is a welding part (330); A plurality of flexible connections (200) are welded and fixed at one end with the contact blade (100) and at the other end with the welding part (330) of the connecting plate (300).

2. An electrically conductive assembly according to claim 1, wherein: The flexible connection (200) is a wire, and each contact blade (100) is provided with two wires.

3. An electrically conductive assembly according to claim 2, wherein: The two wires are welded and fixed on the front and back surfaces of the connecting plate (300).

4. An electrically conductive assembly according to claim 1, wherein: The first connecting plate (310) and the second connecting plate (320) are the same size.

5. An electrically conductive assembly according to claim 1, wherein: The first connecting plate (310) is provided with a first semicircular hole at the wiring part (350), and the second connecting plate (320) is correspondingly provided with a second semicircular hole at the wiring part (350), and the first semicircular hole and the second semicircular hole cooperate to form a matching hole (360).

6. An electrically conductive assembly according to claim 1, wherein: The wiring part (350) and the welding part (330) are arranged in parallel, and a transition part (340) is arranged between the two.

7. An electrically conductive assembly according to claim 1, wherein: The surface of the wiring part (350) is provided with a plurality of anti-skid lines.

8. The conductive assembly of claim 1, wherein: The first connecting plate (310) and the second connecting plate (320) are provided with fixing holes (370).

9. An electrically conductive assembly according to claim 1, wherein: The side edges of the first connecting plate (310) and the second connecting plate (320) are arranged in close contact.

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