Molded case circuit breaker electric operating mechanism

Abstract

The utility model relates to an electric operating mechanism of a molded case circuit breaker. The technical problem to be solved by the utility model is to provide an electric operating mechanism of a molded case circuit breaker. According to the technical scheme, the electric operating mechanism comprises a molded case circuit breaker and an electric operating mechanism body, the electric operating mechanism body comprises an operating mechanism shell and an operating mechanism mounting support, the molded case circuit breaker body comprises a circuit breaker upper cover and an upper cover locking piece, and a shell bottom plate and a shell inner cavity are arranged at the bottom of the operating mechanism shell. And the operating mechanism mounting bracket comprises a bracket upper mounting part. The operating mechanism mounting bracket has the advantages that the matching design of the bracket inserting part and the socket of the boss part of the upper cover is locked through the upper cover locking piece, so that the reliability of connection between the operating mechanism mounting bracket and the upper cover of the circuit breaker is remarkably enhanced, and the problems of loose connection and displacement caused by vibration and frequent action are effectively prevented; the stability of the electric operating mechanism is ensured, and the safety is higher.

Description

Technical Field

[0001] This utility model relates to an electric operating mechanism for a molded case circuit breaker. Background Technology

[0002] The electric operating mechanism of a molded case circuit breaker (MCCB) is an electrical device used to control the MCCB, achieving the connection and disconnection of the MCCB electrically. Existing electric operating mechanisms are fixed to the MCCB cover via an operating mechanism mounting bracket, typically using bolt connections. Because the closing and opening movements of the MCCB involve significant fluctuations, they are prone to considerable vibration. Frequent use can cause the connection between the operating mechanism mounting bracket and the MCCB cover to loosen, resulting in displacement of the electric operating mechanism. This displacement directly affects the stability of the electric operating mechanism, preventing it from accurately driving the circuit breaker to complete the closing and opening actions. This reduces the stability and reliability of the operation, posing a safety hazard. Therefore, improvements are proposed to address this issue. Utility Model Content

[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide an electric operating mechanism for a molded case circuit breaker.

[0004] The technical solution adopted by the electric operating mechanism of the molded case circuit breaker of this utility model is as follows: It includes a molded case circuit breaker and an electric operating mechanism fixed on the molded case circuit breaker. The electric operating mechanism includes an operating mechanism housing and an operating mechanism mounting bracket. The molded case circuit breaker includes a circuit breaker top cover and a top cover locking device. The bottom of the operating mechanism housing is provided with a housing base plate and a housing cavity. The operating mechanism mounting bracket includes an upper mounting part, one end of which is vertically bent in sequence to form a bracket raising part and a bracket lower mounting part. The upper mounting part is bolted to the housing base plate, the bracket lower mounting part, and the circuit breaker top cover. The left and right ends of the bracket raising part are vertically bent inward to form bracket insertion parts, and the bracket insertion parts are provided with bracket anti-slip openings.

[0005] The circuit breaker cover includes a top cover protrusion and an outer top cover portion located at the upper and lower ends of the top cover protrusion and used for fixing the lower mounting portion of the bracket. The upper and lower ends of the top cover protrusion are provided with top cover protrusion insertion ports for the bracket insertion portion to be inserted. The side of the top cover protrusion is provided with a top cover locking port that is perpendicularly connected to the top cover protrusion insertion port. The top cover lock includes a locking part, which passes through the top cover locking port and the bracket anti-shifting port.

[0006] One end of the locking part of the lock is bent vertically inward in sequence to form the lock end stop and the lock hand lever part.

[0007] The locking mechanism has a locking indicator on its manual lever part.

[0008] The other end of the mounting part on the bracket is bent vertically upward to form the upper limit part of the bracket, and the bottom plate of the outer shell is provided with an outer shell limiting port corresponding to the upper limit part of the bracket.

[0009] The anti-slip opening of the bracket, the locking opening of the upper cover, and the locking part of the lock are all square structures.

[0010] The bracket has two connectors.

[0011] The advantages of this utility model of electric operating mechanism for molded case circuit breakers are as follows: the fit design between the bracket insertion part and the upper cover protrusion part is locked by the upper cover locking device, which significantly enhances the connection reliability between the operating mechanism mounting bracket and the circuit breaker upper cover, effectively preventing connection loosening and displacement caused by vibration and frequent operation, ensuring the stability of the electric operating mechanism and higher safety. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a front view of the electric operating mechanism of the molded case circuit breaker of this utility model;

[0014] Figure 2 This is a schematic diagram of the back structure of the operating mechanism housing of this utility model;

[0015] Figure 3 This utility model relates to a mounting bracket for the operating mechanism.

[0016] Figure 4 This is a schematic diagram of the structure of the circuit breaker cover of this utility model;

[0017] Figure 5 This is a structural schematic diagram of the top cover lock component of this utility model. Detailed Implementation

[0018] like Figures 1-5As shown, the electric operating mechanism of the molded case circuit breaker involved in this utility model includes a molded case circuit breaker and an electric operating mechanism fixed on the molded case circuit breaker. The electric operating mechanism includes an operating mechanism housing 1 and an operating mechanism mounting bracket 2. The molded case circuit breaker includes a circuit breaker top cover 3 and a top cover locking member 4. The bottom of the operating mechanism housing 1 is provided with a housing base plate 6 and a housing cavity 7. The operating mechanism mounting bracket 2 includes an upper mounting part 9. One end of the upper mounting part 9 is bent vertically in sequence to form a bracket raising part 10 and a bracket lower mounting part 11. The upper mounting part 9 is bolted to the housing base plate 6, the bracket lower mounting part 11, and the circuit breaker top cover 3. The left and right ends of the bracket raising part 10 are bent vertically inward to form a bracket insertion part 12. The bracket insertion part 12 is provided with a bracket anti-shifting port 13. The circuit breaker top cover 3 includes an upper... The upper cover has a raised portion 14 and an outer portion 15 for fixing the bracket lower mounting portion 11. The upper cover has a raised portion socket 16 for the bracket insertion portion 12 to be inserted at its upper and lower ends. The upper cover has a locking port 17 that is perpendicular to the locking port 16 on its side. The upper cover has a locking part 4 including a locking part 19 that passes through the locking port 17 and the bracket anti-slip port 13. The bracket insertion portion 12 and the upper cover raised portion socket 16 are locked by the locking part 19 of the upper cover lock 4. This significantly enhances the connection reliability between the operating mechanism mounting bracket 2 and the circuit breaker upper cover 3, effectively prevents loosening and displacement caused by vibration and frequent operation, and ensures the stability and safety of the electric operating mechanism.

[0019] The locking part 19 of the lock is bent vertically inward at one end to form the lock end stop 20 and the lock hand lever part 21. The user can complete the locking and unlocking by simple lever operation, which improves the convenience and efficiency of operation.

[0020] The locking mechanism hand lever 21 is provided with a locking mark 23, which makes it easy for users to quickly identify whether to lock the operating mechanism mounting bracket 2.

[0021] The other end of the mounting part 9 on the bracket is bent vertically upward to form the upper limit part 24 of the bracket. The bottom plate of the outer shell 6 is provided with an outer shell limiting port 25 corresponding to the upper limit part 24 of the bracket, which enhances the firmness and reliability of the connection between the operating mechanism mounting bracket 2 and the operating mechanism outer shell 1.

[0022] The anti-slip opening 13 of the bracket, the locking opening 17 of the upper cover, and the locking part 19 of the lock are all square structures, which further enhances the locking effect.

[0023] The bracket has two insertion parts 12, which makes the structure more stable.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. An electrically operated mechanism for a molded case circuit breaker, comprising a molded case circuit breaker and an electrically operated mechanism fixed to the molded case circuit breaker, characterized in that: The electric operating mechanism includes an operating mechanism housing (1) and an operating mechanism mounting bracket (2). The molded case circuit breaker includes a circuit breaker top cover (3) and a top cover lock (4). The bottom of the operating mechanism housing (1) is provided with a housing bottom plate (6) and a housing inner cavity (7). The operating mechanism mounting bracket (2) includes an upper mounting part (9). One end of the upper mounting part (9) is bent vertically in sequence to form a bracket raising part (10) and a bracket lower mounting part (11). The upper mounting part (9) is connected to the housing bottom plate (6), the bracket lower mounting part (11) and the circuit breaker top cover (3) by bolts. The left and right ends of the bracket raising part (10) are bent vertically inward to form a bracket insertion part (12). The bracket insertion part (12) is provided with a bracket anti-slip port (13). The circuit breaker cover (3) includes a cover boss (14) and an outer cover part (15) provided at the upper and lower ends of the cover boss (14) for fixing the bracket lower mounting part (11). The upper and lower ends of the cover boss (14) are provided with cover boss inserts (16) for the bracket insertion part (12) to be inserted. The side of the cover boss (14) is provided with a cover lock opening (17) that is perpendicular to the cover boss insert opening (16). The cover lock (4) includes a lock locking part (19) which passes through the cover lock opening (17) and the bracket anti-shift opening (13).

2. The electrically operated mechanism for a molded case circuit breaker according to claim 1, characterized in that: The locking part (19) of the lock is bent vertically inward at one end to form the lock end stop (20) and the lock hand lever part (21).

3. The electrically operated mechanism for a molded case circuit breaker according to claim 2, characterized in that: The locking mechanism (21) is provided with a locking mark (23).

4. The electrically operated mechanism for a molded case circuit breaker according to claim 1, characterized in that: The other end of the mounting part (9) on the bracket is bent vertically upward to form the upper limit part (24) of the bracket, and the bottom plate (6) of the outer shell is provided with an outer shell limiting port (25) corresponding to the upper limit part (24) of the bracket.

5. The electrically operated mechanism for a molded case circuit breaker according to claim 1, characterized in that: The anti-slip opening (13) of the bracket, the locking opening (17) of the upper cover, and the locking part (19) of the lock are all square structures.

6. The electrically operated mechanism for a molded case circuit breaker according to claim 1, characterized in that: The number of bracket insertion parts (12) is 2.

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