Half shaft mounting structure of circuit breaker operating mechanism

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a half shaft mounting structure of a circuit breaker operating mechanism, which is reasonable in structural design and mainly comprises a frame side plate, a closing half shaft, an opening half shaft, a first rivet, a second rivet, a third rivet, a torsion spring and a clamp spring. The first rivet, the second rivet and the third rivet are used for replacing an eccentric bolt assembly to achieve installation of functional components, and the installed functional components such as the torsion spring meet the design requirement and do not need to be adjusted again. And meanwhile, the exposed part of each riveting rivet is shorter than that of the original eccentric adjusting screw, so that the riveting rivets cannot interfere with components such as a side controller and the like.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a half-shaft mounting structure for a circuit breaker operating mechanism. Background Technology

[0002] Circuit breakers are one of the important components in low-voltage power grids. Small frame circuit breakers are used in large numbers in low-voltage distribution cabinets. With the miniaturization and intelligent development of low-voltage distribution cabinets, the overall size of the distribution cabinets is getting smaller and the density of small frames is getting higher. Therefore, low-voltage switchgear manufacturers have put forward higher requirements for the temperature rise of the outgoing terminals of frame circuit breakers. It is necessary to meet the requirement that frame circuit breakers do not degrade in high-temperature environments. This is especially important in some applications with high ambient temperature requirements.

[0003] The existing circuit breaker operating mechanism half-shaft mounting structure is as follows: Figure 5 As shown, it includes a closing half-shaft 3' and a opening half-shaft 4' mounted on a frame side plate 1'. The frame side plate 1' is equipped with a torsion spring that mates with the closing half-shaft 3' and a retaining spring that mates with the opening half-shaft 4', respectively, via eccentric bolt assemblies 2'. This half-shaft mounting structure has several shortcomings: firstly, during mechanism adjustment, operators must align all eccentric bolt assemblies to the same position; failure to do so will affect the closing and opening operations; secondly, the exposed bolts of the eccentric bolt assemblies are relatively long, easily interfering with components such as the controller. Therefore, the existing half-shaft mounting structure of the circuit breaker operating mechanism needs optimization and improvement. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned problems existing in the traditional technology and to provide a half-shaft mounting structure for a circuit breaker operating mechanism.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A half-shaft mounting structure for a circuit breaker operating mechanism includes a frame side plate, a closing half-shaft, an opening half-shaft, a first rivet, a second rivet, a third rivet, a torsion spring, and a retaining spring. The frame side plate is riveted to two third positioning heads via the third rivets. The outer sides of the two third positioning heads respectively movably support the closing half-shaft and the opening half-shaft, which are capable of rotating around their own axes. The frame side plate is riveted to a first positioning head via the first rivet. A torsion spring cooperating with the closing half-shaft is fixed between the first positioning head and the frame side plate. The frame side plate is riveted to a second positioning head via the second rivet. A retaining spring cooperating with the opening half-shaft is located between the second positioning head and the frame side plate.

[0007] Furthermore, in the half-shaft mounting structure of the circuit breaker operating mechanism described above, the blind ends of the rivet bodies after the first rivet, the second rivet, and the third rivet are located in the outer region of the frame side plate, and the torsion spring, the snap ring, and the third positioning head are located in the inner region of the frame side plate.

[0008] Furthermore, in the half-shaft mounting structure of the circuit breaker operating mechanism described above, the protrusion height of the blind end of the rivet body after the first rivet, the second rivet, and the third rivet are relative to the frame side plate is 2 to 3 mm.

[0009] Furthermore, in the half-shaft mounting structure of the circuit breaker operating mechanism described above, the first positioning head is provided with a first protrusion for easy winding of the spring body in the torsion spring, and the outer end of the first protrusion is provided with a first end to prevent axial displacement of the spring body; the second positioning head is provided with a second protrusion for easy sleeve mounting of the retaining spring, and the outer end of the second protrusion is provided with a second end to prevent axial displacement of the retaining spring.

[0010] Furthermore, in the half-shaft mounting structure of the circuit breaker operating mechanism described above, the vertical cross-section of the third positioning head is a T-shaped structure with a wider outer side and a narrower inner side, and the inner ends of the closing half-shaft and the opening half-shaft are provided with matching T-shaped grooves.

[0011] Furthermore, in the half-shaft mounting structure of the circuit breaker operating mechanism described above, a linkage mechanism for linking the closing half-shaft and the opening half-shaft is also installed in the inner area of ​​the frame side plate.

[0012] The beneficial effects of this utility model are:

[0013] This utility model has a reasonable structural design. It is mainly composed of a frame side plate, a closing half shaft, a opening half shaft, a first rivet, a second rivet, a third rivet, a torsion spring, and a retaining spring. The first rivet, the second rivet, and the third rivet are used to replace the eccentric bolt assembly to realize the installation of functional components. The installed torsion spring and other functional components meet the design requirements and do not need to be adjusted again. At the same time, the exposed part of each rivet is shorter than that of the original adjusting eccentric screw, so it will not interfere with the side controller and other components.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1This is a three-dimensional structural diagram of the half-shaft mounting structure of this utility model;

[0017] Figure 2 This is a rear view schematic diagram of the half-shaft mounting structure of this utility model;

[0018] Figure 3 This is a front view schematic diagram of the half-shaft mounting structure of this utility model;

[0019] Figure 4 This is a side view of the half-shaft mounting structure of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the half-shaft mounting structure in the background art;

[0021] The components represented by each number in the attached diagram are explained below:

[0022] 1-Frame side plate, 2-Closing half shaft, 3-Opening half shaft, 4-First rivet, 5-Second rivet, 6-Torsion spring, 7-Snap ring, 8-Third rivet. Detailed Implementation

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1-4 As shown, this embodiment provides a half-shaft mounting structure for a circuit breaker operating mechanism, including a frame side plate 1, a closing half-shaft 2, an opening half-shaft 3, a first rivet 4, a second rivet 5, a third rivet 8, a torsion spring 6, and a retaining spring 7. The frame side plate 1 is riveted with two third positioning heads via the third rivets 8. The outer sides of the two third positioning heads respectively movably support the closing half-shaft 2 and the opening half-shaft 3, which are capable of rotating around their own axes. The frame side plate 1 is riveted with the first positioning head via the first rivet 4, and a torsion spring 6, which cooperates with the closing half-shaft 2, is fixed between the first positioning head and the frame side plate 1. The frame side plate 1 is riveted with the second positioning head via the second rivet 5, and a retaining spring 7, which cooperates with the opening half-shaft 3, is located between the second positioning head and the frame side plate 1.

[0025] In this embodiment, the blind ends of the rivet bodies after riveting the first rivet 4, the second rivet 5, and the third rivet 8 are located in the outer region of the frame side plate, while the torsion spring 6, the retaining spring 7, and the third positioning head are located in the inner region of the frame side plate 1.

[0026] In this embodiment, the protrusion height of the blind end of the rivet body after riveting the first rivet 4, the second rivet 5, and the third rivet 8 relative to the frame side plate is 2-3 mm.

[0027] In this embodiment, the first positioning head is provided with a first protrusion for easy winding of the spring body in the torsion spring 6, and the outer end of the first protrusion is provided with a first end to prevent axial displacement of the spring body; the second positioning head is provided with a second protrusion for easy sleeve of the retaining spring 7, and the outer end of the second protrusion is provided with a second end to prevent axial displacement of the retaining spring 7.

[0028] In this embodiment, the vertical cross-section of the third positioning head is a T-shaped structure with a wider outer side and a narrower inner side, and the inner ends of the closing half shaft 2 and the opening half shaft 3 are provided with matching T-shaped grooves.

[0029] In this embodiment, the inner area of ​​the frame side plate 1 is also equipped with a linkage mechanism for linking the closing half shaft 2 and the opening half shaft 3.

[0030] A specific application of this embodiment is as follows: The half-shaft mounting structure is mainly composed of a frame side plate 1, a closing half-shaft 2, a opening half-shaft 3, a first rivet 4, a second rivet 5, a third rivet 8, a torsion spring 6, and a retaining spring 7. The first rivet 4, the second rivet 5, and the third rivet 8 are used to replace the eccentric bolt assembly to realize the installation of functional components. The installed torsion spring 6 and other functional components meet the design requirements and do not need to be adjusted again. At the same time, the exposed part of each riveting rivet is shorter than that of the original adjusting eccentric screw, so it will not interfere with the side controller and other components.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A half-shaft mounting structure for a circuit breaker operating mechanism, characterized in that, The device includes a frame side plate, a closing half-shaft, a opening half-shaft, a first rivet, a second rivet, a third rivet, a torsion spring, and a retaining spring. The frame side plate is riveted to have two third positioning heads installed on it via the third rivets. The outer sides of the two third positioning heads are respectively movably supported by the closing half-shaft and the opening half-shaft, which can rotate around their own axes. The frame side plate is riveted to have a first positioning head installed on it via the first rivet. A torsion spring that cooperates with the closing half-shaft is fixed between the first positioning head and the frame side plate. The frame side plate is riveted to have a second positioning head installed on it via the second rivet. A retaining spring that cooperates with the opening half-shaft is located between the second positioning head and the frame side plate.

2. The half-shaft mounting structure of the circuit breaker operating mechanism according to claim 1, characterized in that, The blind ends of the rivet bodies after the first rivet, second rivet, and third rivet are located in the outer region of the frame side plate, while the torsion spring, snap ring, and third positioning head are located in the inner region of the frame side plate.

3. The half-shaft mounting structure of the circuit breaker operating mechanism according to claim 2, characterized in that, The blind end of the rivet after riveting the first, second, and third rivets protrudes 2 to 3 mm above the side plate of the frame.

4. The half-shaft mounting structure of the circuit breaker operating mechanism according to claim 3, characterized in that, The first positioning head is provided with a first protrusion to facilitate the winding of the spring body in the torsion spring, and the outer end of the first protrusion is provided with a first end to prevent axial displacement of the spring body; the second positioning head is provided with a second protrusion to facilitate the sleeve of the retaining spring, and the outer end of the second protrusion is provided with a second end to prevent axial displacement of the retaining spring.

5. The half-shaft mounting structure of the circuit breaker operating mechanism according to claim 4, characterized in that, The vertical cross-section of the third positioning head is a T-shaped structure that is wider on the outside and narrower on the inside, and the inner ends of the closing half shaft and the opening half shaft are provided with matching T-shaped grooves.

6. The half-shaft mounting structure of the circuit breaker operating mechanism according to claim 5, characterized in that, The inner area of ​​the frame side plate is also equipped with a linkage mechanism for linking the closing half shaft and the opening half shaft.

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