A base for a frame type circuit breaker

Abstract

This utility model relates to a base for a frame-type circuit breaker, including a base body and a base plate disposed on the base body. An aluminum bracket is disposed on each of the two sides of the base body. One side of each aluminum bracket has an L-shaped fixing part. The base body has a snap-fit ​​groove that mates with the fixing part, and the fixing part snaps into the snap-fit ​​groove, forming a snap-fit ​​engagement between the fixing part and the base body. A copper insert, connected to the aluminum bracket, is disposed on the base body corresponding to the snap-fit ​​groove. A screw, connected to the copper insert, is disposed on the aluminum bracket. The other side of the aluminum bracket has a mounting protrusion extending out of the base body. This utility model has the advantages of simple structure, stable and reliable performance, high assembly efficiency, and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of frame type circuit breakers, in particular to a base 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. The base of the existing frame-type circuit breaker is formed by plastic molding. The strength of the base is relatively weak. If it is subjected to excessive force, it will break, resulting in a short service life of the base. The assembly of the base and the bottom plate of the frame-type circuit breaker is relatively cumbersome. The base of the frame-type circuit breaker has the defects of complex structure, inconvenient assembly, and unreliable performance. Summary of the invention

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

[0004] To achieve the above-mentioned purpose, the utility model adopts a base of a frame-type circuit breaker, including a base body and a bottom plate arranged on the base body, an aluminum bracket is respectively arranged on both sides of the base body, one side of the aluminum bracket has a fixing portion with an L-shaped cross-section, a clamping groove matched with the fixing portion is arranged on the base body, the fixing portion is clamped in the clamping groove, and a clamping fit between the fixing portion and the base body is formed, a copper inlay connected to the aluminum bracket is arranged at the corresponding clamping groove on the base body, a screw connected to the copper inlay is arranged on the aluminum bracket, and a mounting convex strip extending outside the base body is provided on the other side of the aluminum bracket.

[0005] The beneficial effects of the above structure are: two aluminum brackets are arranged on the base body, and the two aluminum brackets can effectively improve the overall strength of the base body, and the fixing part of the aluminum bracket is embedded in the clamping groove of the base body, thereby improving the overall strength of the base body, which is beneficial to prolonging the service life of the base of the frame-type circuit breaker, and the aluminum bracket is connected to the copper insert of the base body by screws, thereby ensuring that the connection between the aluminum bracket and the base body is more compact. In addition, the aluminum bracket is provided with a mounting convex strip, so as to facilitate the installation of the base of the frame-type circuit breaker, and the installation is more convenient. Therefore, the base of the frame-type circuit breaker has the advantages of simple structure, stable and reliable performance, high assembly efficiency and long service life.

[0006] In particular, a positioning groove is provided at both sides of the corresponding copper insert in the clamping groove, and a positioning boss matched with the positioning groove is provided on the fixing part, and the positioning boss is clamped in the positioning groove to form a clamping fit between the fixing part and the base body. The fixing part of the aluminum bracket is clamped in the clamping groove through the positioning boss, so that the connection between the aluminum bracket and the base body can be more compact, which is conducive to improving the overall strength of the base of the frame-type circuit breaker.

[0007] In particular, three contact cavities are formed between the base body and the bottom plate, the base body has a partition portion separating the three contact cavities, and the base body is provided with operating mechanism mounting holes communicating with the three contact cavities at positions corresponding to the two aluminum brackets. The two aluminum brackets can improve the overall strength of the base body, and the operating mechanism mounting hole is provided between the two aluminum brackets, thereby facilitating the improvement of the working reliability of the base of the frame-type circuit breaker.

[0008] In particular, the partition part of the base body is respectively provided with a plurality of snap-fitting convex strips, and the bottom plate is provided with a plurality of snap-fitting grooves matched with the plurality of snap-fitting convex strips, and 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 body is snap-fitted into the plurality of snap-fitting grooves on the bottom plate through the plurality of snap-fitting convex strips, thereby facilitating the assembly of the base body and the bottom plate, and achieving high assembly efficiency.

[0009] 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 on the bottom plate can limit the partition part, thereby facilitating the assembly of the bottom plate and the unit body, and the assembly efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a stereogram of an embodiment of the utility model.

[0011] Figure 2 This is an exploded view of an embodiment of the utility model.

[0012] Figure 3 It is a three-dimensional diagram of the aluminum bracket according to an embodiment of the utility model. DETAILED DESCRIPTION

[0013] like Figures 1 to 3As shown, the embodiment of the utility model is a base of a frame-type circuit breaker, including a base body 10 and a bottom plate 12 arranged on the base body 10, an aluminum bracket 13 is respectively arranged on both sides of the base body 10, and one side of the aluminum bracket 13 has a fixing portion 131 with an L-shaped cross-section shape, and a clamping groove 101 matching with the fixing portion 131 is arranged on the base body 10, and the fixing portion 131 is clamped in the clamping groove 101, and constitutes a clamping fit between the fixing portion 131 and the base body 10, and a copper insert 14 connected to the aluminum bracket 13 is arranged at the corresponding clamping groove 101 on the base body 10, and a screw 15 connected to the copper insert 14 is arranged on the aluminum bracket 13, and a mounting convex strip 132 extending outside the base body 10 is provided on the other side of the aluminum bracket 13. A positioning groove 102 is respectively provided at both sides of the corresponding copper insert 14 in the clamping groove 101, and a positioning boss 1311 matching the positioning groove 102 is provided on the fixing portion 131. The positioning boss 1311 is clamped in the positioning groove 102, and constitutes the clamping fit between the fixing portion 131 and the base body 10. The fixing portion of the aluminum bracket is clamped in the clamping groove through the positioning boss, so that the connection between the aluminum bracket and the base body can be more compact, which is conducive to improving the overall strength of the base of the frame-type circuit breaker.

[0014] like Figure 1 , 2 As shown, three contact cavities 100 are formed between the base body 10 and the bottom plate 12, and the base body 10 has a partition portion 103 separating the three contact cavities 100. The base body 10 is provided with operating mechanism mounting holes 104 communicating with the three contact cavities 100, respectively, between the two corresponding aluminum brackets 13. The two aluminum brackets can improve the overall strength of the base body, and the operating mechanism mounting holes are arranged between the two aluminum brackets, which is conducive to improving the working reliability of the base of the frame-type circuit breaker. The partition portion 103 of the base body 10 is respectively provided with a plurality of snap-fitting convex strips 1031, and the bottom plate 12 is provided with a plurality of snap-fitting grooves 121 matching the plurality of snap-fitting convex strips 1031, and the plurality of snap-fitting convex strips 1031 are snap-fitted in the snap-fitting grooves 121, and constitute the snap-fitting of the partition portion 103 and the bottom plate 12. The base body is engaged with multiple engaging grooves on the bottom plate through multiple engaging convex strips, so as to facilitate the assembly of the base body and the bottom plate, and the assembly efficiency is high. A limiting convex strip 122 is respectively arranged on the bottom plate 12 at both sides corresponding to the partition part 103, and the limiting convex strip 122 is respectively abutted on both sides of the partition part 103, and constitutes the limiting cooperation between the partition part 103 and the limiting convex strip 122. The limiting convex strip on the bottom plate can limit the partition part, so as to facilitate the assembly of the bottom plate and the unit body, and the assembly efficiency is higher.

[0015] Two aluminum brackets are arranged on the base body, which can effectively improve the overall strength of the base body, and the fixing part of the aluminum bracket is embedded in the clamping groove of the base body, so as to improve the overall strength of the base body, which is conducive to extending the service life of the base of the frame-type circuit breaker, and the aluminum bracket is connected to the copper insert of the base body by screws, so as to ensure that the connection between the aluminum bracket and the base body is more compact. And the aluminum bracket is provided with a mounting convex strip, so as to facilitate the installation of the base of the frame-type circuit breaker, and the installation is more convenient. Therefore, the base of the frame-type circuit breaker has the advantages of simple structure, stable and reliable performance, high assembly efficiency and long service life.

Claims

1. A base for a frame type circuit breaker, characterized in that: It includes a base body and a bottom plate arranged on the base body, an aluminum bracket is respectively arranged on both sides of the base body, one side of the aluminum bracket has a fixing portion with an L-shaped cross-section, the base body is provided with a clamping groove matching the fixing portion, the fixing portion is clamped in the clamping groove, and constitutes a clamping fit between the fixing portion and the base body, a copper inlay connected to the aluminum bracket is arranged at the corresponding clamping groove on the base body, a screw connected to the copper inlay is arranged on the aluminum bracket, and the other side of the aluminum bracket has a mounting convex strip extending outside the base body.

2. The base of the frame type circuit breaker according to claim 1, characterized in that: A positioning groove is respectively arranged at both sides of the corresponding copper insert in the clamping groove, and a positioning boss matched with the positioning groove is arranged on the fixing part. The positioning boss is clamped in the positioning groove and constitutes the clamping fit between the fixing part and the base body.

3. The base of the frame type circuit breaker according to claim 1 or 2, characterized in that: Three contact cavities are formed between the base body and the bottom plate. The base body has a partition portion separating the three contact cavities. Operating mechanism mounting holes communicating with the three contact cavities are respectively arranged between the two corresponding aluminum brackets on the base body.

4. The base of the frame type circuit breaker according to claim 3, characterized in that: The partition part of the base body is respectively provided with a plurality of snap-fitting convex strips, and the bottom plate is provided with a plurality of snap-fitting grooves matching with the plurality of snap-fitting convex strips. The plurality of snap-fitting convex strips are snapped into the snap-fitting grooves and constitute the snap-fitting of the partition part and the bottom plate.

5. The base 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.

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