Base assembly of frame type circuit breaker

Abstract

The utility model relates to a base assembly of a frame type circuit breaker, which comprises a base and a bottom plate, a plurality of contact accommodating cavities are formed between the base and the bottom plate, the bottom plate is respectively provided with a plurality of bus holes communicated with the plurality of contact accommodating cavities, the bottom plate is provided with a plurality of phase clapboards separated among the plurality of bus holes, and the plurality of phase clapboards are communicated with the plurality of contact accommodating cavities. Clamping convex strips are arranged at one ends of the phase partition plates, clamping grooves matched with the clamping convex strips are formed in the bottom plate, the clamping convex strips are clamped in the clamping grooves, positioning holes communicated with the clamping grooves are formed in the bottom plate, positioning convex blocks matched with the positioning holes are arranged on the clamping convex strips, and the positioning convex blocks are clamped in the positioning holes. The two sides of the clamping protruding strip are provided with two limiting protruding strips, the two limiting protruding strips abut against the bottom plate, and the two limiting protruding strips and the bottom plate are matched in a limiting mode. The utility model has the advantages of simple structure, stable and reliable performance, high assembly efficiency and good insulation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of frame type circuit breakers, in particular to a base assembly of a frame type circuit breaker. Background Art

[0002] A frame-type circuit breaker is a mechanical switch that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions. Universal circuit breakers are used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit, etc. Existing frame-type circuit breakers include a base, a bottom plate, a mask, an operating mechanism, a contact system, a conductive system, an arc extinguishing system, and a controller. When the existing frame-type circuit breaker is in use, in order to prevent external conductive objects from contacting the busbar and causing a short circuit between phases, phase partitions will be installed between the busbars of the circuit breaker chassis to play the role of phase isolation and insulation. The phase partitions in the current industry are prone to deformation in an environment with rising temperatures, which causes greater safety hazards in electricity use, and the assembly of the phase partitions and the bottom plate is relatively cumbersome and inconvenient. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide a base assembly for a frame type circuit breaker with simple structure, stable and reliable performance, high assembly efficiency and good insulation performance.

[0004] To achieve the above-mentioned purpose, the utility model adopts a base assembly of a frame-type circuit breaker, including a base and a bottom plate, a plurality of contact accommodating cavities are formed between the base and the bottom plate, a plurality of busbar holes connected with the plurality of contact accommodating cavities are respectively arranged on the bottom plate, a plurality of phase partitions separated between the plurality of busbar holes are arranged on the bottom plate, one end of the phase partition has a snap-fitting convex strip, a snap-fitting groove matched with the snap-fitting convex strip is arranged on the bottom plate, the snap-fitting convex strip is snapped in the snap-fitting groove, a positioning hole connected with the snap-fitting groove is arranged on the bottom plate, a positioning convex block matched with the positioning hole is arranged on the snap-fitting convex strip, the positioning convex block is snapped in the positioning hole, and a snap-fitting cooperation between the positioning convex block and the bottom plate is formed, two limiting convex strips are arranged on both sides of the snap-fitting convex strip, the two limiting convex strips abut against the bottom plate, and a limiting cooperation between the two limiting convex strips and the bottom plate is formed.

[0005] The beneficial effects of the above structure are: the phase partition is clamped on the bottom plate through the clamping convex strip and the positioning convex block, and a double clamping structure design is adopted, so that the connection between the phase partition and the bottom plate can be ensured to be more compact, and the clamping convex strip is clamped in the clamping groove of the bottom plate, which can increase the contact area between the phase partition and the bottom plate, and the two limiting convex strips of the phase partition are against the bottom plate, and the two limiting convex strips play a supporting role for the phase partition, which can prevent the phase partition from being deformed due to high temperature. The insulation performance of the phase partition of this structural design is better, and it is conducive to extending the service life of the phase partition. Therefore, the base assembly of the frame-type circuit breaker has the advantages of simple structure, stable and reliable performance, high assembly efficiency, and good insulation performance.

[0006] In particular, a plurality of reinforcing ribs are arranged at intervals on both sides of the phase partition, and the reinforcing ribs can enhance the strength of the entire phase partition, and can prevent the phase partition from being deformed due to high temperature, thereby facilitating the improvement of the insulation performance of the base assembly.

[0007] In particular, the base has a partition part separating the plurality of contact cavities, the partition part is respectively provided with a plurality of snap-fitting convex strips, the bottom plate is provided with a plurality of snap-fitting grooves matching the plurality of snap-fitting convex strips, the plurality of snap-fitting convex strips are snap-fitted in the snap-fitting grooves, and constitute the snap-fitting of the partition part and the bottom plate. The base is snap-fitted in the plurality of snap-fitting grooves of the bottom plate through the plurality of snap-fitting convex strips, thereby facilitating the assembly of the base and the bottom plate, and ensuring a more compact connection between the base and the bottom plate.

[0008] In particular, a limiting convex strip is provided on the bottom plate at both sides of the corresponding partition part, and the limiting convex strips respectively contact the two sides of the partition part, and constitute the limiting cooperation between the partition part and the limiting convex strip. The limiting convex strip has a limiting effect on the partition part, thereby facilitating the assembly of the bottom plate and the base, and the assembly efficiency is higher.

[0009] In particular, two aluminum brackets are arranged on both sides of the base, one side of the aluminum bracket has a fixing portion engaged in the clamping groove of the base, the fixing portion is provided with a screw connected to the copper insert in the base, and the other side of the aluminum bracket has a mounting convex strip extending outside the base. The fixing portion of the aluminum bracket is engaged in the clamping groove of the base, thereby effectively improving the overall strength of the base, and the fixing portion of the aluminum bracket is connected to the copper insert of the base by screws, thereby ensuring a more compact connection between the aluminum bracket and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a stereoscopic diagram of an embodiment of the utility model from a first viewing angle.

[0011] Figure 2 This is a stereoscopic diagram from a second viewing angle of an embodiment of the utility model.

[0012] Figure 3 This is an exploded view of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] like Figures 1 to 3 As shown, the embodiment of the utility model is a base assembly of a frame-type circuit breaker, including a base 10 and a bottom plate 12, a plurality of contact accommodating cavities 100 are formed between the base 10 and the bottom plate 12, a plurality of busbar holes 121 connected to the plurality of contact accommodating cavities 100 are respectively provided on the bottom plate 12, a plurality of phase partitions 11 separated between the plurality of busbar holes 121 are provided on the bottom plate 12, one end of the phase partition 11 has a snap-fitting convex strip 111, and a snap-fitting groove 122 matched with the snap-fitting convex strip 121 is provided on the bottom plate 12, and the The snap-fitting convex strip 111 is snapped into the snap-fitting groove 122, the bottom plate 12 is provided with a positioning hole 123 connected to the snap-fitting groove 122, the snap-fitting convex strip 111 is provided with a positioning convex block 112 matched with the positioning hole 123, the positioning convex block 112 is snapped into the positioning hole 123, and constitutes the snap-fitting of the positioning convex block 112 and the bottom plate 12, the snap-fitting convex strip 111 has two limiting convex strips 113 on both sides, the two limiting convex strips 113 abut against the bottom plate 12, and constitute the limiting cooperation of the two limiting convex strips 113 and the bottom plate 12. A plurality of reinforcing ribs 114 are arranged at intervals on both sides of the phase partition 11. The reinforcing ribs can enhance the strength of the entire phase partition, and can prevent the phase partition from being deformed due to high temperature, thereby helping to improve the insulation performance of the base assembly.

[0014] like Figure 2As shown, the base 10 has a partition part 101 separated between multiple contact cavities 100, and the partition part 101 is respectively provided with multiple snap-in convex strips 1011, and the bottom plate 12 is provided with multiple snap-in grooves 124 that match the multiple snap-in convex strips 1011. The multiple snap-in convex strips 1011 are snapped into the snap-in grooves 124, and constitute the snap-in fit between the partition part 101 and the bottom plate 12. The base is snapped into the multiple snap-in grooves of the bottom plate through the multiple snap-in convex strips, so as to facilitate the assembly of the base and the bottom plate, and ensure that the connection between the base and the bottom plate is more compact. The bottom plate 12 is respectively provided with a limiting convex strip 125 at both sides of the corresponding partition part 101, and the limiting convex strip 125 is respectively abutted on both sides of the partition part 101, and constitutes the limiting fit between the partition part 101 and the limiting convex strip 125. The limiting convex strip has a limiting effect on the partition part, so as to facilitate the assembly of the bottom plate and the base, and the assembly efficiency is higher. Two aluminum brackets 13 are arranged on both sides of the base 10, and one side of the aluminum bracket 13 has a fixing part 131 that is engaged in the clamping groove 102 of the base 10, and the fixing part 131 is provided with a screw 15 connected to the copper insert 14 in the base 10, and the other side of the aluminum bracket 13 has a mounting convex strip 132 extending outside the base 10. The fixing part of the aluminum bracket is embedded in the clamping groove of the base, so as to effectively improve the overall strength of the base, and the fixing part of the aluminum bracket is connected to the copper insert of the base by screws, so as to ensure that the connection between the aluminum bracket and the base is more compact.

[0015] The phase partition is clamped on the bottom plate through the clamping convex strip and the positioning convex block, and adopts a double clamping structure design, so as to ensure that the connection between the phase partition and the bottom plate is more compact, and the clamping convex strip is clamped in the clamping groove of the bottom plate, which can increase the contact area between the phase partition and the bottom plate, and the two limiting convex strips of the phase partition are against the bottom plate, and the two limiting convex strips play a supporting role for the phase partition, which can prevent the phase partition from being deformed due to high temperature. The phase partition of this structural design has better insulation performance and is conducive to extending the service life of the phase partition. Therefore, the base assembly of the frame-type circuit breaker has the advantages of simple structure, stable and reliable performance, high assembly efficiency, and good insulation performance.

Claims

1. A base assembly of a frame-type circuit breaker, comprising a base and a bottom plate, characterized in that: A plurality of contact accommodating cavities are formed between the base and the bottom plate, a plurality of busbar holes connected to the plurality of contact accommodating cavities are respectively arranged on the bottom plate, a plurality of phase partitions separated between the plurality of busbar holes are arranged on the bottom plate, one end of the phase partition has a snap-in convex strip, a snap-in groove matched with the snap-in convex strip is arranged on the bottom plate, the snap-in convex strip is snapped in the snap-in groove, a positioning hole connected to the snap-in groove is arranged on the bottom plate, a positioning protrusion matched with the positioning hole is arranged on the snap-in convex strip, the positioning protrusion is snapped in the positioning hole, and a snap-in fit between the positioning protrusion and the bottom plate is formed, two limiting protrusions are provided on both sides of the snap-in protrusion, the two limiting protrusions abut against the bottom plate, and a limiting fit between the two limiting protrusions and the bottom plate is formed.

2. The base assembly of the frame type circuit breaker according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged at intervals on both sides of the phase partition.

3. The base assembly of the frame type circuit breaker according to claim 1 or 2, characterized in that: The base has a partition portion that separates multiple contact cavities, and the partition portion is respectively provided with multiple snap-in ridges. The bottom plate is provided with multiple snap-in grooves that match the multiple snap-in ridges. The multiple snap-in ridges are snapped into the snap-in grooves and constitute a snap-in fit between the partition portion and the bottom plate.

4. The base assembly of the frame type circuit breaker according to claim 3, characterized in that: A limiting convex strip is respectively arranged on the bottom plate at both sides corresponding to the partition part, and the limiting convex strips respectively abut against the two sides of the partition part, and constitute the limiting cooperation between the partition part and the limiting convex strips.

5. The base assembly of the frame type circuit breaker according to claim 1 or 2, characterized in that: Two aluminum brackets are arranged on both sides of the base, one side of the aluminum bracket has a fixing part which is engaged in the clamping groove of the base, the fixing part is provided with a screw connected to the copper insert in the base, and the other side of the aluminum bracket has a mounting convex strip extending outside the base.

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