Vector control synchronous circuit breaker

Abstract

The utility model discloses a vector control synchronous circuit breaker, which relates to the field of circuit breakers, and comprises a circuit breaker, the end face of the circuit breaker is provided with a deflector rod, the outer side of the deflector rod is sleeved with a protective sleeve, the outer wall of the protective sleeve is provided with a buffer whistle, and the outer side of the circuit breaker is provided with a buffer pad below the deflector rod. When the shifting rod rotates, the protective sleeve is driven to move towards the buffering cushion, and the buffering whistle is tightly attached to the buffering cushion. According to the utility model, through the arrangement of the buffer whistle and the buffer pad, the impact force of the driving lever can be absorbed through the attachment of the buffer whistle and the buffer pad in the resetting process of the driving lever, so that the impact between the driving lever and the circuit breaker is reduced, the service life of the driving lever is prolonged, and meanwhile, the air flow in the buffer whistle is extruded, so that the service life of the driving lever is prolonged. The baffle plate is arranged in the buffer whistle, so that the air flow flows along the baffle plate to resonate, and whistling sound is generated to remind surrounding operators.

Description

Technical Field

[0001] The utility model relates to the field of circuit breakers, in particular to a vector controlled synchronous circuit breaker. Background Art

[0002] The basic principle of vector control is to measure and control the stator current vector of the asynchronous motor, and control the excitation current and torque current of the asynchronous motor according to the magnetic field orientation principle, so as to achieve the purpose of controlling the torque of the asynchronous motor. The circuit breaker can be used to distribute electric energy, start the asynchronous motor infrequently, and protect the power supply line and motor. When they have serious overload or short circuit and undervoltage faults, they can automatically cut off the circuit. Its function is equivalent to the combination of a fuse switch and an over-underheating relay.

[0003] The prior art CN217134307U discloses a universal motor circuit breaker control device, which can achieve stable circuit switching by setting a reduction gear. However, a spring structure is usually used inside the circuit breaker. When encountering a short circuit or the like, the lever is reset by the spring. If the elastic force is too large during the resetting process, the lever will rotate quickly. If the force is too large, the lever will be damaged. If a buffer structure is used during the return process, the sound during the resetting process will be small, which is difficult to attract people's attention. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a vector-controlled synchronous circuit breaker to solve the technical problems of large impact force when the lever returns and small noise during buffering.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vector-controlled synchronous circuit breaker, comprising a circuit breaker, a lever is installed on the end face of the circuit breaker, a protective cover is sleeved on the outer side of the lever, a buffer whistle is installed on the outer wall of the protective cover, and a buffer pad is installed on the outer side of the circuit breaker below the lever, and when the lever rotates, the protective cover is driven to move toward the buffer pad, and the buffer whistle is tightly fitted with the buffer pad.

[0006] By adopting the above technical solution, when the lever returns to its original position, the impact of the lever on the circuit breaker can be reduced by the buffer whistle and the buffer pad, thereby increasing the service life of the lever.

[0007] The utility model is further configured that the outer wall of the protective sleeve is connected with a connecting plate, and the buffer whistle is fixedly connected to the protective sleeve through the connecting plate.

[0008] By adopting the above technical solution, it is convenient to fix the buffer whistle.

[0009] The utility model is further configured that two ends of the buffer whistle are respectively provided with an air outlet and a sealing opening, the air outlet faces the outside of the circuit breaker, and the sealing opening faces the circuit breaker.

[0010] By adopting the above technical solution, when the buffer whistle is squeezed, the air flow can be ejected through the air outlet.

[0011] The utility model is further configured that a sleeve cavity is provided inside the protective sleeve, and the protective sleeve is engaged and connected with the lever through the sleeve cavity.

[0012] By adopting the above technical solution, the protective cover can be conveniently fixed on the outside of the lever.

[0013] The utility model is further configured that the inner wall of the sleeve cavity is provided with a plurality of groups of soft strips, and the soft strips are evenly distributed on the inner side of the sleeve cavity, and the soft strips are fitted with the outer wall of the lever.

[0014] By adopting the above technical solution, the soft strip can increase the friction between the soft strip and the lever, improve the installation effect, and facilitate the fixing of the protective cover on levers of different specifications.

[0015] The utility model is further configured that a hollow structure is provided in the middle of the buffer pad, and when the buffer pad is impacted, the hollow structure is deformed.

[0016] By adopting the above technical solution, the impact force can be effectively reduced.

[0017] In summary, the utility model mainly has the following beneficial effects:

[0018] 1. The utility model can improve the connection effect with the lever by using the protective cover and multiple groups of soft strips opened inside the protective cover during the installation of the protective cover, and can be conveniently fixed on the outside of levers of different specifications to improve the installation effect.

[0019] 2. The utility model can, through the buffer whistle and the buffer pad, absorb the impact force of the lever itself during the resetting process of the lever through the fit of the buffer whistle and the buffer pad, thereby reducing the impact between the lever and the circuit breaker and improving the service life of the lever. At the same time, the airflow inside the buffer whistle is squeezed so that the airflow is ejected from the air outlet of the buffer whistle. A partition is provided in the buffer whistle so that the airflow flows along the partition and resonates, thereby generating a whistle to remind surrounding operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the protective cover of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the cross section of the protective cover of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the buffer pad of the utility model.

[0024] In the figure: 1. circuit breaker; 101. lever; 102. wiring hole; 2. protective cover; 201. buffer whistle; 202. air outlet; 203. seal; 204. connecting plate; 205. socket cavity; 206. soft strip; 3. buffer pad. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] A vector controlled synchronous circuit breaker, such as Figures 1 to 4 As shown, it includes a circuit breaker 1, a lever 101 is installed on the end face of the circuit breaker 1, a protective sleeve 2 is sleeved on the outer side of the lever 101, a sleeve cavity 205 is provided inside the protective sleeve 2, the protective sleeve 2 is snap-fitted and connected with the lever 101 through the sleeve cavity 205, a buffer whistle 201 is installed on the outer wall of the protective sleeve 2, an air outlet 202 and a seal 203 are respectively provided at both ends of the buffer whistle 201, the air outlet 202 faces the outside of the circuit breaker 1, and the seal 203 faces the circuit breaker 1, a buffer pad 3 is installed on the outside of the circuit breaker 1 below the lever 101, a hollow structure is provided in the middle position of the buffer pad 3, when the buffer pad 3 is impacted, the hollow structure is deformed, and when the lever 101 rotates, the protective sleeve 2 is driven to move toward the buffer pad 3, and the buffer whistle 201 is tightly fitted with the buffer pad 3, so that the air in the buffer whistle 201 is ejected from the air outlet 202 to produce a whistle sound.

[0028] See also Figure 2 The outer wall of the protective sleeve 2 is connected with a connecting plate 204, and the buffer whistle 201 is fixedly connected to the protective sleeve 2 through the connecting plate 204, which facilitates the fixed connection of the buffer whistle 201.

[0029] See also Figure 3 The inner wall of the sleeve cavity 205 is provided with multiple groups of soft strips 206, and the soft strips 206 are evenly distributed on the inner side of the sleeve cavity 205. The soft strips 206 fit the outer wall of the lever 101, so that the protective cover 2 can be conveniently fixed on the outer side of levers 101 of different specifications.

[0030] When in use, first fix the circuit breaker 1 inside the electrical box and connect it to the external wire through the wiring hole 102, then sleeve the protective cover 2 on the outside of the lever 101, and point the buffer whistle 201 downward, then push the lever 101 upward to turn on the power supply to supply power to the external motor, and then install the buffer pad 3 under the lever 101, and the buffer pad 3 is installed at a position where the buffer whistle 201 can fit. During use, if the circuit breaker 1 is short-circuited, the connection inside the circuit breaker 1 is disconnected, and at this time Under the action of the spring, the lever 101 is pulled back, and the lever 101 drives the outer protective cover 2 to return, so that the buffer whistle 201 hits the buffer pad 3, and the air in the buffer pad 3 is squeezed out through the air outlet 202. The airflow will contact the barrier structure during the flow, so that the airflow resonates and generates a whistle, thereby reminding people around that the circuit breaker 1 is disconnected. At the same time, through the contact between the buffer whistle 201 and the buffer pad 3, the impact on the lever 101 and the circuit breaker 1 itself can be effectively reduced, thereby increasing the service life of the lever 101.

[0031] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A vector controlled synchronous circuit breaker, comprising a circuit breaker (1), characterized in that: The end surface of the circuit breaker (1) is mounted with a lever (101), the outer side of the lever (101) is sleeved with a protective sleeve (2), the outer wall of the protective sleeve (2) is mounted with a buffer whistle (201), and the outer side of the circuit breaker (1) is mounted with a buffer pad (3) below the lever (101), and when the lever (101) rotates, the protective sleeve (2) is driven to move toward the buffer pad (3), and the buffer whistle (201) is tightly fitted with the buffer pad (3).

2. A vector controlled synchronous circuit breaker according to claim 1, characterized in that: The outer wall of the protective sleeve (2) is connected to a connecting plate (204), and the buffer whistle (201) is fixedly connected to the protective sleeve (2) via the connecting plate (204).

3. A vector controlled synchronous circuit breaker according to claim 1, characterized in that: An air outlet (202) and a sealing opening (203) are respectively provided at two ends of the buffer whistle (201); the air outlet (202) faces the outside of the circuit breaker (1), and the sealing opening (203) faces the circuit breaker (1).

4. A vector controlled synchronous circuit breaker according to claim 1, characterized in that: A sleeve connection cavity (205) is provided inside the protective sleeve (2), and the protective sleeve (2) is snap-connected to the lever (101) via the sleeve connection cavity (205).

5. A vector controlled synchronous circuit breaker according to claim 4, characterized in that: The inner wall of the sleeve cavity (205) is provided with a plurality of groups of soft strips (206), and the soft strips (206) are evenly distributed on the inner side of the sleeve cavity (205), and the soft strips (206) are in contact with the outer wall of the lever (101).

6. A vector controlled synchronous circuit breaker according to claim 1, characterized in that: A hollow structure is provided in the middle of the buffer pad (3); when the buffer pad (3) is impacted, the hollow structure is deformed.

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