Circuit breaker interlocking structure

Abstract

The utility model relates to a circuit breaker interlocking structure which is arranged on a circuit breaker frame and connected with an opening assembly, and is characterized in that the circuit breaker interlocking structure comprises a locking plate and a limiting plate; the opening assembly comprises a supporting shaft and an opening lever. The supporting shaft is arranged on the circuit breaker frame; the opening lever is arranged on the supporting shaft; the locking plate is rotationally arranged on the circuit breaker frame; the supporting shaft is further provided with a limiting plate. The opening lever and the limiting plate rotate along with the supporting shaft; in the opening action execution process, the opening lever rotates forwards along with the supporting shaft, and a circuit breaker loop is disconnected; and in a switching-on state, the locking plate is rotated, and the locking plate is in contact with the forward surface of the limiting plate. According to the utility model, the locking plate abuts against and limits the limiting plate, thereby limiting the rotation of the supporting shaft and the opening lever. And the possibility that an operator mistakenly operates the opening assembly and opens the opening accidentally is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage electrical apparatus technical field especially relates to circuit breaker interlock structure. BACKGROUND

[0002] The circuit breaker is a kind of automatic protection circuit equipment, it can monitor current state in real time, and automatically control the on-off of circuit, plays a vital role in power system and electrical equipment.

[0003] In addition to automatic control, circuit breaker can also be manually controlled, and circuit can be manually opened or closed. But manual operation inevitably exists misoperation. For some sensitive equipment, manual operation leads to unexpected tripping of circuit breaker, may cause equipment failure or damage. Even misoperation tripping occurs at critical moment, such as elevator operation, medical equipment operation, etc. It can pose a threat to personal safety.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, so it can include information that does not constitute prior art known to those skilled in the art. INVENTION CONTENTS

[0005] In view of the above shortcomings of prior art, the purpose of the utility model is to provide circuit breaker interlock structure to reduce the generation of circuit breaker misoperation.

[0006] The technical scheme of the utility model is as follows:

[0007] The circuit breaker interlock structure is arranged on the circuit breaker frame, and the tripping assembly is connected. The circuit breaker interlock structure comprises a locking plate and a limiting plate.

[0008] The tripping assembly comprises a support shaft and a tripping lever. The support shaft is arranged on the circuit breaker frame. The tripping lever is arranged on the support shaft.

[0009] The locking plate is rotatably arranged on the circuit breaker frame.

[0010] Wherein, the support shaft is further provided with a limiting plate. The tripping lever and the limiting plate rotate with the support shaft. In the tripping action execution process, the tripping lever rotates forward with the support shaft, and the circuit breaker loop is disconnected. In the closed state, the locking plate is rotated, and the locking plate contacts the forward surface of the limiting plate.

[0011] Further technical scheme is that it further comprises a connecting plate, one end of the connecting plate is rotatably connected with the locking plate, and the other end of the connecting plate faces the bottom of the circuit breaker frame.

[0012] Further, the locking plate comprises a connecting section, a locking section and a driving section; the connecting section is rotationally connected to the circuit breaker frame; the connecting section is arranged between the driving section and the locking section; in the closed state, the locking plate is rotated, and the locking section contacts the limiting plate; the driving section is rotationally connected to the connecting plate.

[0013] Further, the limiting plate is arranged parallel to the supporting shaft; in the closed state, the locking section is perpendicular to the limiting plate.

[0014] Further, the circuit breaker frame is further provided with a supporting frame; the supporting frame comprises a connecting part and a swinging part; the connecting part is rotationally connected to the circuit breaker frame; the swinging part is connected to one end of the connecting plate, which is away from the locking plate.

[0015] Further, the connecting plate is provided with a turned edge at the outer edge.

[0016] Further, the connecting plate is parallel to the circuit breaker frame connected to the connecting plate.

[0017] Further, the connecting plate is provided with a first waist-shaped hole, and the swinging part is rotationally connected to the connecting plate through the first waist-shaped hole.

[0018] Further, the connecting plate is provided with at least one second waist-shaped hole.

[0019] The beneficial technical effects of the utility model are as follows:

[0020] (1) The circuit breaker interlocking structure in the utility model is provided with a limiting plate on a supporting shaft and a locking plate on a circuit breaker frame. In the closed state, the locking plate is rotated, the locking plate can abut against and limit the limiting plate, and the rotation of the supporting shaft and the opening lever is limited. That is, after the locking plate is locked, the opening assembly can be unlocked only by rotating the locking plate first, and then the opening assembly can be used to open. This greatly reduces the possibility of accidental opening of the opening assembly by the operator. Reducing the misoperation of opening can ensure the stability of the circuit connected to the circuit breaker and protect the equipment of the contact circuit. Therefore, the safety and reliability of the circuit system are improved, and the operation efficiency of the circuit is improved.

[0021] (2) Further, a connecting plate is arranged. The connecting plate is used for force transmission to expand the operation range of the locking plate. The connecting plate can extend out of the circuit breaker, so that the operator can conveniently lock or unlock the closed state of the circuit breaker outside the circuit breaker.

[0022] (3) Further, the end of the connecting plate away from the locking plate is fixed on the circuit breaker frame through the support frame, and the connecting plate is connected with the support frame through the first waist-shaped hole. The waist-shaped hole connection can provide flexible movement within a certain range, avoiding the connecting plate from being stuck. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective structural schematic view of the circuit breaker interlocking structure of the utility model is shown.

[0024] Figure 2 A front view structural schematic view of the circuit breaker interlocking structure of the utility model is shown.

[0025] Figure 3 A left view structural schematic view of the circuit breaker interlocking structure of the utility model is shown.

[0026] Markings in the drawings:

[0027] 1, circuit breaker frame; 2, opening assembly; 21, support shaft; 22, opening lever; 3, limiting plate; 4, locking plate; 41, locking section; 42, connecting section; 43, driving section; 5, connecting plate; 51, first waist-shaped hole; 52, second waist-shaped hole; 53, flange; 6, support frame; 61, connecting part; 62, swing part. DETAILED DESCRIPTION

[0028] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the drawings. It should be known that the structure, proportion, size and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification, so that people skilled in the art can understand and read, and are not used to limit the limiting conditions for implementing the utility model, so they do not have substantial technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the utility model can produce, should still fall within the scope covered by the technical content disclosed by the utility model.

[0029] In the description of the utility model, the orientation or positional relationship indicated by the limiting terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] Figure 1 A perspective structural schematic view of the circuit breaker interlocking structure of the utility model is shown. Figure 2The schematic diagram of the main structure of the circuit breaker interlocking structure of the utility model is shown. Figure 1 and Figure 2 The circuit breaker interlocking structure is arranged on the circuit breaker frame 1 and connected to the trip assembly 2. The circuit breaker interlocking structure includes a locking plate 4 and a limit plate 3. The trip assembly 2 includes a support shaft 21 and a trip lever 22. The support shaft 21 is arranged on the circuit breaker frame 1. The trip lever 22 is arranged on the support shaft 21. The locking plate 4 is rotatably arranged on the circuit breaker frame 1. Among them, a limit plate 3 is also arranged on the support shaft 21. The trip lever 22 and the limit plate 3 rotate along with the support shaft 21. During the execution of the tripping action, the trip lever 22 rotates forward along with the support shaft 21 to disconnect the circuit breaker circuit. In the closed state, the locking plate 4 is rotated, and the locking plate 4 contacts the positive surface of the limit plate 3, thereby limiting the rotation of the support shaft 21 and the trip lever 22. That is, after the locking plate 4 is locked, the trip assembly 2 can only be opened by rotating the locking plate 4 to complete the unlocking of the trip assembly 2. This greatly reduces the possibility of the operator misoperating the trip assembly 2 and accidentally tripping the circuit. Reducing erroneous tripping can ensure the stability of the circuit connected to the circuit breaker and protect the equipment in contact with the circuit. This will further improve the safety and reliability of the circuit system and enhance the operational efficiency of the circuit.

[0031] Figure 3 The left side structural diagram of the circuit breaker interlocking structure of the present invention is shown. Figure 1 and Figure 3 , further comprising a connecting plate 5, one end of which is rotatably connected to the locking plate 4, with the other end of the connecting plate 5 facing the bottom of the circuit breaker frame 1. The connecting plate 5 is used to transmit force, thereby expanding the operating range of the locking plate 4. The connecting plate 5 can extend from the circuit breaker, allowing the operator to conveniently lock or unlock the circuit breaker's closed state from outside the circuit breaker.

[0032] Preferably, the locking plate 4 includes a connecting section 42, a locking section 41, and a driving section 43. The connecting section 42 is rotatably connected to the circuit breaker frame 1. The connecting section 42 is positioned between the driving section 43 and the locking section 41. When the circuit breaker is closed, the locking plate 4 is rotated, and the locking section 41 contacts the stop plate 3. The driving section 43 rotates to connect to the connecting plate 5. By adjusting the angle between the locking section 41 and the driving section 43, the position of the connecting plate 5 on the circuit breaker frame 1 can be easily adjusted, facilitating the installation of the interlocking structure within the circuit breaker.

[0033] More preferably, the limit plate 3 is arranged parallel to the support shaft 21. In the closed state, the locking section 41 is perpendicular to the limit plate 3. The outer edge of the locking section 41 contacts the limit plate 3 to ensure the contact area and thus the contact stability.

[0034] Please refer to Figure 1 and Figure 3The circuit breaker frame 1 is further provided with a support frame 6, which comprises a connecting part 61 and a swing part 62.

[0035] Preferably, the outer edge of the connecting plate 5 is provided with a flange 53.

[0036] Please refer to Figure 1 and Figure 3 The connecting plate 5 is parallel to the circuit breaker frame 1 connected with the connecting plate 5.

[0037] Preferably, the connecting plate 5 is provided with a first waist-shaped hole 51, and the swing part 62 is rotatably connected with the connecting plate 5 through the first waist-shaped hole 51.

[0038] More preferably, the connecting plate 5 is provided with at least one second waist-shaped hole 52.

[0039] The specific working process of the utility model is as follows:

[0040] When the locking and closing state is locked, the swing part 62 is rotated around the connecting part 61, the swing part 62 pulls the connecting plate 5 to move, and the connecting plate pulls the driving section 43 to move.

[0041] When the locking and closing state is unlocked, the swing part 62 is reversely rotated around the connecting part 61, the swing part 62 pushes the connecting plate 5 to move, and the connecting plate 5 pushes the driving section 43 to move.

[0042] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0043] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A circuit breaker interlock structure provided on a circuit breaker frame to engage a tripping assembly, characterized by, The circuit breaker interlocking structure comprises a locking plate and a limiting plate; The opening assembly comprises a support shaft and an opening lever; the support shaft is arranged on the circuit breaker frame; and the opening lever is arranged on the support shaft; The locking plate is rotatably arranged on the circuit breaker frame; The support shaft is further provided with the limiting plate; the opening lever and the limiting plate rotate with the support shaft; during the opening operation, the opening lever rotates forward with the support shaft to disconnect the circuit breaker loop; and in the closed state, the locking plate is rotated to contact the forward surface of the limiting plate.

2. The circuit breaker interlock structure of claim 1, wherein: The connecting plate is rotatably connected to one end of the locking plate, and the other end of the connecting plate faces the bottom of the circuit breaker frame.

3. The circuit breaker interlock structure of claim 2, wherein: The locking plate comprises a connecting section, a locking section and a driving section; the connecting section is rotatably connected to the circuit breaker frame; the connecting section is arranged between the driving section and the locking section; in the closed state, the locking section is rotated to contact the limiting plate; and the driving section is rotatably connected to the connecting plate.

4. The circuit breaker interlock structure of claim 3, wherein: The limiting plate is arranged parallel to the support shaft; and in the closed state, the locking section is perpendicular to the limiting plate.

5. The circuit breaker interlock structure of claim 2, wherein: The circuit breaker frame is further provided with a support frame; the support frame comprises a connecting part and a swing part; the connecting part is rotatably connected to the circuit breaker frame; and the swing part is connected to one end of the connecting plate away from the locking plate.

6. The circuit breaker interlock structure of claim 2, wherein: The outer edge of the connecting plate is provided with a turned edge.

7. The circuit breaker interlock structure of claim 2, wherein: The connecting plate is parallel to the circuit breaker frame to which the connecting plate is connected.

8. The circuit breaker interlock structure of claim 5, wherein: A first waist-shaped hole is formed in the connecting plate; and the swing part is rotatably connected to the connecting plate through the first waist-shaped hole.

9. The circuit breaker interlock structure of claim 2, wherein: At least one second waist-shaped hole is formed in the connecting plate.

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