Sliding block transmission mechanism of molded case circuit breaker

Abstract

The utility model discloses a slide block transmission mechanism of a molded case circuit breaker, which comprises a seat body, a slide block slidably arranged on the seat body, and a driving assembly for driving the slide block to slide, the driving assembly comprises a gear motor unit, a connecting rod and a transmission gear driven by the gear motor unit, one end of the connecting rod is rotatably connected with the slide block, and the other end of the connecting rod is rotatably connected with the transmission gear. The other end of the connecting rod is eccentrically and rotationally connected to the transmission gear, and the transmission gear is arranged right opposite to the sliding block in the sliding direction of the sliding block. The sliding block mechanism is reasonable in structural design, the transmission gear and the connecting rod are arranged, the transmission gear rotates to drive the sliding block to slide on the seat body through the connecting rod, sliding of the sliding block can be achieved through a simple structure, transmission is stable and accurate, and practicability and reliability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and more specifically, to a slider transmission mechanism for a molded case circuit breaker. Background Technology

[0002] Existing molded case circuit breakers with energy storage electric operating mechanisms typically have free trip, re-trip, and closing states. These mechanisms generally offer both manual and automatic operation modes, which can be switched between to operate the corresponding circuit breakers. Energy storage involves storing electrical energy in a compressed spring via a motor and reduction gear. When needed, the stored energy is released instantaneously to push the circuit breaker handle, closing the molded case circuit breaker. In manual mode, operating the manual operating mechanism stores energy in the energy storage mechanism, completing the re-trip operation of the corresponding circuit breaker and preparing for the next closing operation. In automatic mode, an electrical signal is given to the electric operator, and the motor, through multi-stage gear transmission, stores energy in the energy storage mechanism, simultaneously completing the re-trip operation of the corresponding circuit breaker and preparing for the next closing operation.

[0003] In the aforementioned manual or automatic operation, the sliding of a slider is generally performed. The slider has an opening that matches the handle of the electric operating mechanism. The movement of the slider drives the electric operating mechanism to perform free-release, re-lock, and closing actions. The transmission mechanism that drives the slider's movement has become a focus for designers seeking improvement. Utility Model Content

[0004] This utility model overcomes the shortcomings of the prior art. Its structure is reasonably designed. By setting a transmission gear and a connecting rod, the rotation of the transmission gear will drive the slider to slide on the seat through the connecting rod. The slider can slide with a simple structure. The transmission is stable and accurate, and it is practical and reliable.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A slider transmission mechanism for a molded case circuit breaker includes a base, a slider slidably disposed on the base, and a drive assembly for driving the slider to slide. The drive assembly includes a geared motor unit, a connecting rod, and a transmission gear driven by the geared motor unit. One end of the connecting rod is rotatably connected to the slider, and the other end of the connecting rod is eccentrically rotatably connected to the transmission gear. The transmission gear is positioned directly opposite the slider in the sliding direction of the slider.

[0007] By adopting the technical scheme, the seat body is specifically a part of the molded case circuit breaker shell and serves as a mounting support for the sliding block and the driving assembly, the transmission gear is driven to rotate by the reduction motor unit, one end of the connecting rod is eccentrically arranged on the transmission gear, and the sliding block is driven to slide on the seat body along with the rotation of the transmission gear, the transmission gear is arranged opposite to the sliding block in the sliding direction of the sliding block, the transmission gear is more easily driven to drive the sliding block, the length of the connecting rod is designed to reasonably limit the sliding stroke of the sliding block, and the electric operating mechanism is better adapted to action switching.

[0008] Preferably, the sliding block is fixedly connected with a frame body, the frame body includes a connecting segment connected with the sliding block, an identification segment located at one side of the connecting segment, and a guide segment located at the other side of the connecting segment, the connecting segment, the identification segment, and the guide segment are integrally formed, the reduction motor unit includes a motor and a reduction gear set, further includes a reduction shell fixedly installed on the seat body, the reduction gear set is arranged in the reduction shell, the reduction shell includes a reduction base and a reduction cover arranged on the reduction base, the transmission gear is located above the reduction cover, the reduction base is provided with a containing groove for the guide segment to extend into, and the guide segment is slidably arranged in the containing groove.

[0009] By adopting the technical scheme, the sliding block and the connecting segment are fixedly connected, so that the frame body is fixed on the sliding block, the identification segment can be provided with an identification sticker, so as to display different states of the circuit breaker, the guide segment can extend into the containing groove of the reduction base in the sliding process of the sliding block, the guide segment and the containing groove are in sliding cooperation, so as to further ensure the sliding stability of the sliding block, the motor drives the gears in the reduction gear set to rotate, and finally drives the transmission gear to rotate, so as to realize the sliding of the sliding block, the reduction gear set is arranged in the reduction shell, so as to effectively protect the reduction gear set, the transmission gear is arranged above the reduction cover, so as to easily realize the eccentric installation of the connecting rod and prevent the connecting rod from interfering with other components when the connecting rod is driven by the transmission gear.

[0010] Preferably, the sliding block and the transmission gear are both provided with connecting holes, both ends of the connecting rod are provided with hinged holes, a hinge column is inserted into the connecting hole and the corresponding hinged hole, and the connecting rod is rotatably connected to the hinge column through the hinged hole.

[0011] By adopting the technical scheme, the hinge column is adopted to realize that both ends of the connecting rod are hinged to the transmission gear and the sliding block, and the upper end of the hinge column is larger than the diameter of the hinged hole, so as to better ensure the transmission stability of the connecting rod.

[0012] Preferably, at least one guide rail is fixedly arranged on the seat body, and the sliding block is slidingly arranged on the guide rail.

[0013] By adopting the above technical scheme, the guide rail is specifically provided with two guide rails, and the sliding block is provided with a sliding groove corresponding to the positions of the two guide rails, and the guide rail is inserted into the sliding groove, so that the sliding of the sliding block is realized.

[0014] Preferably, the insertion shaft of the extension reduction cover is rotationally arranged on the reduction housing, and the engagement gear meshing with the transmission gear is arranged on the insertion shaft.

[0015] By adopting the above technical scheme, the rotation of the insertion shaft can be realized by inserting a special tool into the insertion shaft, the sliding of the sliding block can be driven by the engagement gear driving the transmission gear to rotate, and the manual switching of the molded case circuit breaker state is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The figure is a structural schematic view of a specific embodiment of the utility model;

[0017] Figure 2 The figure is a structural schematic view of a specific embodiment of the utility model reflecting the driving assembly;

[0018] Figure 3 The figure is a structural schematic view of a specific embodiment of the utility model reflecting the sliding block and the frame body;

[0019] Figure 4 The figure is a structural schematic view of a specific embodiment of the utility model reflecting the reduction motor unit;

[0020] Figure 5 The figure is a structural schematic view of a specific embodiment of the utility model reflecting the internal structure of the reduction base.

[0021] In the figure: 1, seat body; 11, guide rail; 12, positioning groove column; 2, sliding block; 21, connecting hole; 3, driving assembly; 4, reduction motor unit; 41, motor; 42, reduction gear set; 43, reduction housing; 44, reduction base; 45, reduction cover; 46, accommodating groove; 5, connecting rod; 51, hinged hole; 52, hinged column; 6, transmission gear; 7, frame body; 71, connecting section; 72, identification section; 73, guide section; 8, insertion shaft; 81, engagement gear. DETAILED DESCRIPTION

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-5 As shown, a slider transmission mechanism for a molded case circuit breaker includes a base 1, a slider 2 slidably disposed on the base 1, and a drive assembly 3 for driving the slider 2 to slide. The drive assembly 3 includes a geared motor unit 4, a connecting rod 5, and a transmission gear 6 driven by the geared motor unit 4. One end of the connecting rod 5 is rotatably connected to the slider 2, and the other end of the connecting rod 5 is eccentrically rotatably connected to the transmission gear 6. The transmission gear 6 is positioned directly opposite the slider 2 in the sliding direction of the slider 2.

[0024] By adopting the above technical solution, the base 1 specifically serves as part of the molded case circuit breaker housing, providing support for the slider 2 and drive assembly 3. The transmission gear 6 is driven to rotate by the geared motor unit 4. Since one end of the connecting rod 5 is eccentrically mounted on the transmission gear 6, the rotation of the transmission gear 6 causes the slider 2 to slide on the base 1 via the connecting rod 5. Positioning the transmission gear 6 directly opposite the slider 2 in its sliding direction makes it easier for the transmission gear 6 to drive the slider 2. By designing the length of the connecting rod 5, the sliding stroke of the slider 2 can be reasonably limited to better adapt to the electric operating mechanism for action switching. This configuration achieves the sliding of the slider 2 with a simple structure, providing stable, precise, practical, and reliable transmission.

[0025] The sliding block 2 is fixedly connected with the frame body 7, the frame body 7 includes a connecting segment 71 connected with the sliding block 2, an identification segment 72 located on one side of the connecting segment 71 and a guide segment 73 located on the other side of the connecting segment 71, the connecting segment 71, the identification segment 72 and the guide segment 73 are integrally formed, the speed reducer motor unit 4 includes a motor 41 and a speed reducer gear set 42, and further includes a speed reducer housing 43 fixedly installed on the seat body 1, the speed reducer gear set 42 is arranged in the speed reducer housing 43, the speed reducer housing 43 includes a speed reducer base 44 and a speed reducer cover 45 covered on the speed reducer base 44, the transmission gear 6 is located above the speed reducer cover 45, the speed reducer base 44 is provided with a containing groove 46 for the guide segment 73 to extend into, and the guide segment 73 is slidably arranged in the containing groove 46. The sliding block 2 and the connecting segment 71 are fixedly connected, so that the frame body 7 is fixed on the sliding block 2, the identification segment 72 can be provided with an identification sticker, so as to display different states of the circuit breaker, and the guide segment 73 can extend into the containing groove 46 of the speed reducer base 44 in the sliding process of the sliding block 2, the guide segment 73 is in sliding cooperation with the containing groove 46, so as to further ensure the sliding stability of the sliding block 2. The motor 41 drives the gears in the speed reducer gear set 42 to rotate, and finally drives the transmission gear 6 to rotate, so as to realize the sliding of the sliding block 2. The speed reducer gear set 42 is arranged in the speed reducer housing 43, so that the speed reducer gear set 42 can be effectively protected, and the transmission gear 6 is arranged above the speed reducer cover 45, so that the eccentric installation of the connecting rod 5 is easy to realize, and the connecting rod 5 will not interfere with other components when being driven by the transmission gear 6.

[0026] Moreover, the sliding block 2 and the transmission gear 6 are both provided with a connecting hole 21, both ends of the connecting rod 5 are provided with a hinged hole 51, a hinge column 52 is inserted into the connecting hole 21 and the corresponding hinged hole 51, and the connecting rod 5 is rotatably connected to the hinge column 52 through the hinged hole 51. The scheme of the hinge column 52 is adopted to realize that both ends of the connecting rod 5 are hinged to the transmission gear 6 and the sliding block 2 respectively, and the upper end of the hinge column 52 is larger than the diameter of the hinged hole 51, so as to better ensure the transmission stability of the connecting rod 5.

[0027] In addition, at least one guide rail 11 is fixedly arranged on the seat body 1, the sliding block 2 is slidably arranged on the guide rail 11, both ends of the guide rail 11 are fixedly installed in the positioning groove column 12, and both ends of the guide rail 11 are fixedly installed in the positioning groove column 12. The guide rail 11 is specifically provided with two, and the sliding block 2 can be provided with a sliding groove at positions corresponding to the two guide rails 11, the guide rail 11 is inserted into the sliding groove, so as to realize the sliding of the sliding block 2. Through the fixing of both ends of the guide rail 11 to the positioning groove column 12, the guide rail 11 can be positioned and installed on the seat body 1.

[0028] And the insertion shaft 8 is rotatably arranged on the deceleration housing 43 and protrudes from the deceleration cover 45, and the engagement gear 81 is arranged on the insertion shaft 8 and engages with the transmission gear 6. Through inserting a special tool into the insertion shaft 8, the rotation of the insertion shaft 8 can be realized, the transmission gear 6 is driven to rotate through the engagement gear 81, the sliding block 2 is driven to slide, and the manual switching of the molded case circuit breaker state is realized.

[0029] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent substitutions or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. A slider drive mechanism of a molded case circuit breaker, comprising a seat body (1), a slider (2) slidingly arranged on the seat body (1), a drive assembly (3) driving the slider (2) to slide, the drive assembly (3) comprising a speed reduction motor unit (4), characterized in that, The driving assembly (3) further comprises a connecting rod (5) and a transmission gear (6) driven by the reduction motor unit (4), one end of the connecting rod (5) is rotatably connected to the sliding block (2), the other end of the connecting rod (5) is eccentrically rotatably connected to the transmission gear (6), and the transmission gear (6) is arranged opposite to the sliding block (2) in the sliding direction of the sliding block (2).

2. The slider drive mechanism of a molded case circuit breaker according to claim 1, wherein The sliding block (2) is fixedly connected with a frame body (7), the frame body (7) comprises a connecting section (71) connected with the sliding block (2), an identification section (72) located on one side of the connecting section (71), and a guide section (73) located on the other side of the connecting section (71), and the connecting section (71), the identification section (72) and the guide section (73) are integrally formed.

3. A slider drive mechanism for a molded case circuit breaker according to claim 2, wherein, The reduction motor unit (4) comprises a motor (41) and a reduction gear set (42), and further comprises a reduction shell (43) fixedly installed on the seat body (1), and the reduction gear set (42) is arranged in the reduction shell (43).

4. The slider drive mechanism of a molded case circuit breaker according to claim 3, wherein The reduction shell (43) comprises a reduction base (44) and a reduction cover (45) covering the reduction base (44), the transmission gear (6) is located above the reduction cover (45), the reduction base (44) is provided with a receiving groove (46) for the guide section (73) to extend into, and the guide section (73) is slidably arranged in the receiving groove (46).

5. The slider drive mechanism of a molded case circuit breaker according to claim 1 or 2 or 3 or 4, wherein, The sliding block (2) and the transmission gear (6) are both provided with a connecting hole (21), both ends of the connecting rod (5) are provided with a hinged hole (51), a hinged column (52) is inserted into the connecting hole (21) and the corresponding hinged hole (51), and the connecting rod (5) is rotatably connected to the hinged column (52) through the hinged hole (51).

6. A slider drive mechanism for a molded case circuit breaker according to claim 5 wherein, At least one guide rail (11) is fixedly arranged on the seat body (1), and the sliding block (2) is slidably arranged on the guide rail (11).

7. A slider drive mechanism for a molded case circuit breaker according to claim 6 wherein, The seat body (1) is provided with a positioning groove column (12) at both ends corresponding to the guide rail (11), and both ends of the guide rail (11) are fixedly installed in the positioning groove column (12).

8. The slider drive mechanism of a molded case circuit breaker according to claim 4, wherein The reduction shell (43) is rotatably provided with a plug shaft (8) extending out of the reduction cover (45), and the plug shaft (8) is provided with a meshing gear (81) meshing with the transmission gear (6).

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