CN222690613U - An operating mechanism for a circuit breaker - Google Patents
An operating mechanism for a circuit breaker Download PDFInfo
- Publication number
- CN222690613U CN222690613U CN202421397801.1U CN202421397801U CN222690613U CN 222690613 U CN222690613 U CN 222690613U CN 202421397801 U CN202421397801 U CN 202421397801U CN 222690613 U CN222690613 U CN 222690613U
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- rotating wheel
- circuit breaker
- knob
- operating mechanism
- elastic piece
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Abstract
The utility model provides an operating mechanism of a circuit breaker, which comprises a knob, a rotating wheel, a jump buckle and a rotating wheel, wherein the knob is rotatably arranged on a shell, the knob drives the rotating wheel to rotate through a connecting rod, the rotating wheel is rotatably arranged on the shell, a first elastic piece is arranged between the rotating wheel and a moving contact assembly, the moving contact assembly is driven to rotate through the first elastic piece, a third elastic piece is arranged between the jump buckle and the rotating wheel, a locking port for inserting the end part of the connecting rod is formed between the jump buckle and the rotating wheel under the elastic action of the third elastic piece, and the end part of the connecting rod is abutted against the locking port in the closing process. In the closing process, the third elastic piece can enable the locking port to be kept in a closed state, the knob is abutted against the locking port through the connecting rod, so that the rotating wheel is driven to rotate, the rotating wheel drives the moving contact assembly to rotate towards the closing direction through the first elastic piece, and further, the knob is arranged at the middle position of the shell, so that even if the circuit breaker is arranged in a narrow space, the knob is convenient to operate manually, and the use of a user is facilitated.
Description
Technical Field
The utility model relates to the technical field of piezoelectric devices, in particular to an operating mechanism of a circuit breaker.
Background
The breaker is a low-voltage protection electric appliance used in a power distribution system for switching on or off a load line, and has the functions of manual switching and automatic overload, short circuit and leakage tripping protection.
The traditional breaker operating mechanism generally comprises a knob, a link rod, a jump buckle, a lock catch and a contact support, wherein one end of the link rod is connected with the knob, the other end of the link rod is connected with the jump buckle, the jump buckle and the lock catch are rotatably arranged on the contact support, and the jump buckle and the lock catch are respectively provided with a first lock tooth and a second lock tooth which can be matched with each other. When the breaker is switched on, the first locking tooth of the trip buckle is abutted with the second locking tooth of the lock catch, the knob drives the contact support to rotate towards the switching-on direction through the link rod, the structure of the first locking tooth and the second locking tooth in a matched locking mode is unstable, if the breaker is subjected to factors such as vibration, the first locking tooth and the second locking tooth are easy to separate, the breaker is separated, the reliability is lower, in addition, the knob of the traditional breaker is arranged on the side edge of the shell, the shell is provided with a sufficient space arrangement operation mechanism to realize the function of the breaker, and when the breaker is arranged at a position with a narrow space, the breaker is inconvenient to extend into the rotary knob, and the defect of inconvenience in manual operation exists.
Disclosure of utility model
Therefore, the utility model provides an operating mechanism of a circuit breaker with high reliability and convenient operation.
The utility model provides an operating mechanism of a circuit breaker, which comprises a knob, a rotating wheel and a trip button, wherein the knob is rotatably arranged on a shell, the rotating wheel is driven by a link rod to rotate by the knob, the rotating wheel is rotatably arranged on the shell, a first elastic piece is arranged between the rotating wheel and a moving contact assembly and drives the moving contact assembly to rotate by the first elastic piece, the trip button is rotatably arranged on the shell, a third elastic piece is arranged between the trip button and the rotating wheel, a locking port for inserting the end part of the link rod is formed between the trip button and the rotating wheel under the elastic action force of the third elastic piece, and the end part of the link rod is abutted against the locking port in the closing process, and the moving contact assembly comprises a moving contact frame and a moving contact fixed on the moving contact frame.
The knob is mounted in the middle of the shell.
The jump button, the rotating wheel and the movable contact frame all rotate around the same first rotating shaft.
The first elastic piece is arranged at the end part of the first rotating shaft far away from the rotating wheel of the moving contact.
The brake release mechanism further comprises a return spring, one end of the return spring is connected with the rotating wheel, the other end of the return spring is connected with the shell, and the return spring is suitable for applying elastic acting force moving towards the brake release position direction to the rotating wheel.
The jump buckle is provided with a first rotating arm and a second rotating arm which are positioned at two sides of the rotating center of the jump buckle, the first rotating arm is arranged corresponding to the push rod of the overcurrent tripping mechanism, and a locking port is formed between the end part of the second rotating arm and the rotating wheel.
The return spring and the first elastic piece are both tension springs.
The third elastic piece is a pressure spring.
The technical scheme of the utility model has the following advantages:
1. The operating mechanism of the circuit breaker comprises a knob, a rotating wheel, a jump buckle and a third elastic piece, wherein a locking port for inserting the end part of a link rod is formed between the jump buckle and the rotating wheel under the elastic action force of the third elastic piece, the locking port can be kept in a closed state under the elastic action force of the third elastic piece in the closing process, the knob is propped against the locking port through the link rod, so that the rotating wheel is driven to rotate, and the rotating wheel drives a moving contact assembly to rotate towards the closing direction through the first elastic piece.
2. The operating mechanism of the circuit breaker provided by the utility model has the advantages that the knob is arranged at the middle position of the shell, so that the knob can be operated manually even if the circuit breaker is arranged in a narrow space.
3. According to the operating mechanism of the circuit breaker, the first elastic piece is arranged on the opposite or corresponding side of the first rotating shaft away from the moving contact, so that the space of the shell is reasonably utilized, and the structure is more compact.
4. According to the operating mechanism of the circuit breaker, the rotating wheel is directly connected with the moving contact assembly through the tension spring, and the connecting rod connected with the rotating wheel acts on the moving contact assembly through the rotating wheel, so that the circuit breaker is switched on more reliably.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a circuit breaker of the present utility model;
fig. 2 is a schematic structural view of a circuit breaker operating mechanism;
FIG. 3 is a schematic view of the mechanism with the knob and links removed.
The reference numerals comprise 1, a shell, 3, a moving contact assembly, 4, a knob, 5, a link rod, 6, a rotating wheel, 7, a first elastic piece, 17, a trip button, 18, a third elastic piece, 19, a locking port, 20, a moving contact frame, 21, a moving contact, 22, a first rotating shaft, 65, a push rod, 200, a return spring, 201, a first rotating arm, 202, a second rotating arm and 104, and an overcurrent tripping mechanism.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Examples
The present embodiment provides an operating mechanism of a circuit breaker, as shown in fig. 1 and 2, including a knob 4, a link 5, a rotating wheel 6, a trip 17, a first elastic member 7, a third elastic member 18, a return spring 200, and a moving contact assembly 3.
The movable contact assembly 3 comprises a movable contact frame 20 and a movable contact 21 fixed on the movable contact frame 20, and the movable contact frame 20 is rotatably installed on the shell 1 around a first rotating shaft 22.
The knob 4 is rotatably arranged at the middle position on the shell 1, one end of the link rod 5 is connected with the knob 4, the other end of the link rod 5 can be matched with the rotating wheel 6, the knob 4 drives the rotating wheel 6 to rotate through the link rod 5, and the shell 1 is provided with a torsion spring for driving the knob 4 to reset.
The rotating wheel 6 is rotatably installed on the housing 1 around a first rotating shaft 22, a first elastic piece 7 is arranged between the rotating wheel 6 and the moving contact assembly 3, and the moving contact assembly 3 is driven to rotate by the first elastic piece 7, in this embodiment, the first elastic piece 7 is arranged at the end part of the rotating wheel 6, which is far away from the moving contact 21, of the first rotating shaft 22.
The jump button 17 is rotatably mounted on the housing 1, as shown in fig. 2 and 3, a third elastic member 18 is disposed between the jump button 17 and the rotating wheel 6, a locking opening 19 for inserting the end of the link rod 5 is formed between the jump button 17 and the rotating wheel 6 under the elastic force of the third elastic member 18, and the end of the link rod 5 abuts against the locking opening 19 during closing. The rotating wheel 6, the jump buckle 17 and the moving contact assembly 3 are coaxially arranged, so that the operating mechanism is compact in structure, the space of the shell 1 is reasonably utilized, and other related mechanisms in the shell 1 are reasonably distributed.
In this embodiment, the trip buckle 17 has a first rotating arm 201 and a second rotating arm 202 located at two sides of the rotating center, the first rotating arm 201 is disposed corresponding to the push rod 65 of the overcurrent trip mechanism 104, the locking opening 19 is formed between the end of the second rotating arm 202 and the rotating wheel 6, and the third elastic member 18 is a compression spring. It should be noted that, the overcurrent trip mechanism 104 is a well-known technology, and therefore, the specific structure and the working principle thereof will not be described in detail.
One end of the return spring 200 is connected to the rotating wheel 6, and the other end is connected to the housing 1, and the return spring 200 is adapted to apply an elastic force to the rotating wheel 6, which moves towards the opening position, in this embodiment, the return spring 200 is a tension spring.
It should be noted that, the return spring 200 may be a torsion spring or a compression spring, and the first elastic member 7 may also be a torsion spring, which may be flexibly selected according to actual needs.
The operating principle of the breaker operating mechanism of the utility model is as follows:
When the switch is closed, the manual driving knob 4 rotates clockwise, the end part of the link rod 5 abuts against the locking port 19, so that the rotating wheel 6 and the jump button 17 are driven to rotate clockwise, the rotating wheel 6 drives the movable contact frame 20 to rotate clockwise through the first elastic piece 7, and the movable contact 21 is in contact communication with the fixed contact;
When faults such as overcurrent and overload occur, the jump button 17 rotates anticlockwise relative to the rotating wheel 6 under the action of external force, after the locking port 19 is opened, the end part of the link rod 5 moves out of the opened locking port 19, the rotating wheel 6 rotates anticlockwise under the action force of the reset spring 200, and the movable contact frame 20 is driven to rotate anticlockwise, so that the movable contact and the fixed contact are separated and disconnected.
According to the operating mechanism of the circuit breaker, the knob 4 is arranged at the middle position of the shell 1, so that the knob can be operated manually even if the circuit breaker is arranged in a narrow space, and a user can use the circuit breaker conveniently.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (8)
1. An operating mechanism for a circuit breaker, comprising:
The knob (4) is rotatably arranged on the shell (1), and the knob (4) drives the rotating wheel (6) to rotate through the connecting rod (5);
The rotating wheel (6) is rotatably arranged on the shell (1), a first elastic piece (7) is arranged between the rotating wheel (6) and the moving contact assembly (3), and the moving contact assembly (3) is driven to rotate through the first elastic piece (7);
the jump buckle (17) is rotatably arranged on the shell (1), a third elastic piece (18) is arranged between the jump buckle (17) and the rotating wheel (6), a locking port (19) for inserting the end part of the connecting rod (5) is formed between the jump buckle (17) and the rotating wheel (6) under the elastic acting force of the third elastic piece (18), and the end part of the connecting rod (5) is abutted to the locking port (19) in the closing process;
the movable contact assembly (3) comprises a movable contact frame (20) and a movable contact (21) fixed on the movable contact frame (20).
2. Operating mechanism of a circuit breaker according to claim 1, characterized in that the knob (4) is mounted in an intermediate position of the housing (1).
3. Operating mechanism of a circuit breaker according to claim 1, characterized in that the trip (17), the runner (6) and the movable contact frame (20) all rotate around the same first rotation axis (22).
4. A circuit breaker operating mechanism according to claim 3, characterized in that the first elastic element (7) is provided at the end of the first rotating shaft (22) remote from the rotating wheel (6) of the moving contact (21).
5. Operating mechanism for a circuit breaker according to any of claims 1-4, characterized in that it further comprises a return spring (200), said return spring (200) being connected at one end to said runner (6) and at the other end to said housing (1), said return spring (200) being adapted to exert an elastic force towards said runner (6) moving towards the opening position.
6. The operating mechanism of a circuit breaker according to claim 1, characterized in that the trip buckle (17) has a first rotating arm (201) and a second rotating arm (202) located at both sides of the rotation center thereof, the first rotating arm (201) being provided corresponding to a push rod (65) of the overcurrent trip mechanism (104), and the end of the second rotating arm (202) and the rotating wheel (6) forming the locking port (19).
7. The operating mechanism of a circuit breaker according to claim 5, characterized in that the return spring (200) and the first elastic member (7) are both tension springs.
8. Operating mechanism of a circuit breaker according to claim 1, characterized in that the third elastic element (18) is a compression spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420200441 | 2024-01-26 | ||
| CN2024202004415 | 2024-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222690613U true CN222690613U (en) | 2025-03-28 |
Family
ID=95048064
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421397801.1U Active CN222690613U (en) | 2024-01-26 | 2024-06-18 | An operating mechanism for a circuit breaker |
| CN202421401925.2U Active CN222672846U (en) | 2024-01-26 | 2024-06-18 | Circuit breaker capable of storing energy and fast moving |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421401925.2U Active CN222672846U (en) | 2024-01-26 | 2024-06-18 | Circuit breaker capable of storing energy and fast moving |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN222690613U (en) |
-
2024
- 2024-06-18 CN CN202421397801.1U patent/CN222690613U/en active Active
- 2024-06-18 CN CN202421401925.2U patent/CN222672846U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN222672846U (en) | 2025-03-25 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |