Current transformer for intelligent molded case circuit breaker

Abstract

The utility model relates to the technical field of current transformers, and discloses a current transformer for an intelligent molded case circuit breaker, which comprises a current transformer shell, and a mounting plate is mounted on the upper surface of the current transformer shell; the motor is arranged on the right side of the upper surface of the mounting plate, a rotor of the motor is coaxially provided with a first gear, and the surface of the first gear is meshed with a second gear; the electric control module is arranged on the front face of the motor, an eccentric wheel is mounted at the bottom of a second gear through a connecting rod, and a mounting edge is arranged on the right side of the upper surface of the mounting plate; the first clamping plate is arranged on the right side of the upper surface of the mounting plate. The motor can finally drive the first clamping plate to move opposite to the second clamping plate to clamp the joint of the intelligent molded case circuit breaker, so that the shell of the current transformer can be connected with the intelligent molded case circuit breaker, and a worker can conveniently and quickly disassemble and assemble the current transformer.

Description

Technical Field

[0001] The utility model relates to the technical field of current transformers, in particular to a current transformer for an intelligent molded case circuit breaker. Background Art

[0002] The current transformers used in intelligent molded case circuit breakers play a vital role in the circuit. These transformers are mainly used to monitor the current strength passing through the circuit and transmit the current signal to the intelligent controller. The intelligent controller detects whether the circuit is overloaded, short-circuited or other faults based on these signals.

[0003] Common current transformers for intelligent molded case circuit breakers are generally protected by protective shells. When installing the current transformer, the current transformer is generally installed inside the protective shell through threaded rods. However, due to the small installation space between the molded case circuit breaker and the current transformer, it is difficult for workers to align the threaded rods with the connection between the current transformer and the molded case circuit breaker, which is inconvenient for workers to install the current transformer. At the same time, when disassembling the current transformer, it is also necessary to take out the threaded rods in a narrow place, which is inconvenient for workers to quickly disassemble and assemble the current transformer. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a current transformer for an intelligent molded case circuit breaker to solve the problem raised in the above background technology that when disassembling the current transformer, the threaded rod needs to be taken out in a narrow place, which is inconvenient for workers to disassemble and assemble the current transformer.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a current transformer for an intelligent molded case circuit breaker, comprising:

[0008] A current transformer housing, wherein a mounting plate is mounted on the upper surface of the current transformer housing;

[0009] A motor is arranged on the right side of the upper surface of the mounting plate, a rotor of the motor is coaxially mounted with a first gear, and a surface of the first gear is meshed with a second gear;

[0010] An electric control module is arranged on the front side of the motor, an eccentric wheel is installed at the bottom of the second gear through a connecting rod, and a mounting edge is arranged on the right side of the upper surface of the mounting plate;

[0011] The first clamping plate is arranged on the right side of the upper surface of the mounting plate. The first clamping plate and the mounting edge are both in contact with the surface of the eccentric wheel. The second clamping plate is arranged on the left side of the upper surface of the mounting plate. The second clamping plate is connected to the surface of the mounting edge.

[0012] Preferably, limit rods are installed on the left front and rear of the mounting edge, and the limit rods are inserted on both sides of the lower part of the first clamping plate. The left ends of the limit rods are connected to the surface of the second clamping plate. When the mounting edge is squeezed to the right by the eccentric wheel, the second clamping plate can be driven to move to the right through the limit rod, so that the second clamping plate and the first clamping plate can move toward each other, thereby clamping the connection of the intelligent molded case circuit breaker.

[0013] Preferably, side baffles are installed on the inner front and rear of the first clamping plate and the second clamping plate, and the side baffles are used to be clamped on the connection of the intelligent molded case circuit breaker, so that the second clamping plate and the first clamping plate can install the current transformer housing more firmly.

[0014] Preferably, the electric control module is composed of a driving chip, a power device, a filter and a power supply module. The electric control module is connected to the surface of the motor through a wire. The electric control module adopts a PID control algorithm for closed-loop control and can be programmed accordingly according to different application scenarios to achieve adaptive control of the first gear, thereby intelligently controlling the installation of the second clamping plate and the first clamping plate on the current transformer housing.

[0015] Preferably, sliders are installed at the front and rear parts of the bottom of the first splint and the second splint, and sliding grooves are opened at the front and rear parts of the upper surface of the mounting plate, and the sliders are embedded in the inner cavity of the sliding grooves. The sliders and the sliding grooves are used to install the second splint and the first splint on the surface of the mounting plate, and also enable the second splint and the first splint to move after being installed.

[0016] Preferably, a return spring is installed between the sliders, a mounting seat is installed on the upper surface of the mounting plate, and the motor and the electric control module are installed on the upper surface of the mounting seat. When the eccentric wheel does not squeeze the mounting edge and the first clamping plate, the return spring can reset the second clamping plate and the first clamping plate, so that the first clamping plate and the mounting edge can always be in contact with the surface of the eccentric wheel.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model provides a current transformer for an intelligent molded case circuit breaker, which has the following beneficial effects:

[0019] The current transformer for the intelligent molded case circuit breaker can intelligently control the motor through the electric control module to control the start and stop of the motor. After starting, the motor can drive the first gear to rotate, and then drive the second gear to rotate, thereby driving the eccentric wheel to rotate to squeeze the mounting edge and the first clamping plate. The mounting edge will move to the right when squeezed, thereby driving the second clamping plate to move to the right. The first clamping plate will move to the left after being squeezed by the eccentric wheel, and then can move towards the second clamping plate to clamp the connection of the intelligent molded case circuit breaker, thereby connecting the current transformer housing to the intelligent molded case circuit breaker. When disassembling the current transformer, it is only necessary to start the motor to drive the eccentric wheel to rotate again, so that the first clamping plate and the second clamping plate will not clamp the connection of the intelligent molded case circuit breaker, thereby facilitating the staff to quickly disassemble and assemble the current transformer. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a structural schematic diagram of the upper part of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the mounting plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the installation structure of the eccentric wheel of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the slider of the utility model.

[0025] In the figure: 1. current transformer housing; 2. mounting plate; 3. motor; 4. first gear; 5. second gear; 6. electric control module; 7. eccentric wheel; 8. mounting edge; 9. first clamping plate; 10. second clamping plate; 11. limit rod; 12. side baffle; 13. slider; 14. slide groove; 15. reset spring; 16. mounting seat. DETAILED DESCRIPTION

[0026] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The utility model provides a technical solution, a current transformer for an intelligent molded case circuit breaker, please refer to Figure 1, comprising a current transformer housing 1, a mounting plate 2 being mounted on the upper surface of the current transformer housing 1;

[0028] The motor 3 is arranged on the right side of the upper surface of the mounting plate 2. The rotor of the motor 3 is coaxially mounted with a first gear 4, and the surface of the first gear 4 is meshed with a second gear 5;

[0029] The electric control module 6 is arranged on the front of the motor 3, see Figure 4 , an eccentric wheel 7 is installed at the bottom of the second gear 5 through a connecting rod, and a mounting edge 8 is provided on the right side of the upper surface of the mounting plate 2;

[0030] See also Figure 2 A first clamping plate 9 is arranged on the right side of the upper surface of the mounting plate 2. The first clamping plate 9 and the mounting edge 8 are both in contact with the surface of the eccentric wheel 7. A second clamping plate 10 is arranged on the left side of the upper surface of the mounting plate 2. The second clamping plate 10 is connected to the surface of the mounting edge 8.

[0031] The motor 3 can be intelligently controlled through the electric control module 6 to control the start and stop of the motor 3. After starting, the motor 3 can drive the first gear 4 to rotate, and then drive the second gear 5 to rotate, so as to drive the eccentric wheel 7 to rotate and squeeze the mounting edge 8 and the first clamping plate 9. The mounting edge 8 will move to the right when squeezed, so as to drive the second clamping plate 10 to move to the right. The first clamping plate 9 will move to the left after being squeezed by the eccentric wheel 7, and then can move towards the second clamping plate 10 to clamp the connection of the intelligent molded case circuit breaker, so that the current transformer housing 1 can be connected to the intelligent molded case circuit breaker. When the current transformer is disassembled, it is only necessary to start the motor 3 to drive the eccentric wheel 7 to rotate again, so as to drive the first clamping plate 9 and the second clamping plate 10 not to clamp the connection of the intelligent molded case circuit breaker, thereby facilitating the staff to quickly disassemble and assemble the current transformer.

[0032] Limiting rods 11 are installed on the left front and rear of the mounting edge 8, and the limiting rods 11 are inserted on both sides of the lower part of the first clamping plate 9. The left ends of the limiting rods 11 are connected to the surface of the second clamping plate 10. When the mounting edge 8 is squeezed to the right by the eccentric wheel 7, the limiting rods 11 can drive the second clamping plate 10 to move to the right, so that the second clamping plate 10 and the first clamping plate 9 can move toward each other, thereby clamping the connection of the intelligent molded case circuit breaker.

[0033] Side baffles 12 are installed on the inner front and rear of the first clamping plate 9 and the second clamping plate 10. The side baffles 12 are used to be clamped on the connection of the intelligent molded case circuit breaker, so that the second clamping plate 10 and the first clamping plate 9 can install the current transformer housing 1 more firmly.

[0034] The electric control module 6 is composed of a driving chip, a power device, a filter and a power supply module. The electric control module 6 is connected to the surface of the motor 3 through a wire. The electric control module 6 adopts a PID control algorithm for closed-loop control and can be programmed accordingly according to different application scenarios to achieve adaptive control of the first gear 4, thereby intelligently controlling the installation of the second clamping plate 10 and the first clamping plate 9 on the current transformer housing 1.

[0035] The first clamping plate 9 and the second clamping plate 10 are both provided with sliders 13 at the front and rear of the bottom. Figure 3 The front and rear parts of the upper surface of the mounting plate 2 are provided with slide grooves 14, and the sliders 13 are embedded in the inner cavity of the slide grooves 14. The sliders 13 and the slide grooves 14 are used to install the second clamping plate 10 and the first clamping plate 9 on the surface of the mounting plate 2, and also enable the second clamping plate 10 and the first clamping plate 9 to move after being installed.

[0036] See also Figure 5 , a return spring 15 is installed between the sliders 13, please refer to Figure 2 A mounting seat 16 is installed on the upper surface of the mounting plate 2, and the motor 3 and the electric control module 6 are both installed on the upper surface of the mounting seat 16. When the eccentric wheel 7 does not squeeze the mounting edge 8 and the first clamping plate 9, the reset spring 15 can reset the second clamping plate 10 and the first clamping plate 9, so that the first clamping plate 9 and the mounting edge 8 can always be in contact with the surface of the eccentric wheel 7.

[0037] Firstly, the device can intelligently control the motor 3 through the electric control module 6, which is used to control the start and stop of the motor 3. The electric control module 6 is composed of a driving chip, a power device, a filter and a power supply module. The electric control module 6 is connected to the surface of the motor 3 through a wire. The electric control module 6 adopts a PID control algorithm for closed-loop control, and can be programmed accordingly according to different application scenarios to achieve adaptive control of the first gear 4, so as to intelligently control the installation of the second clamping plate 10 and the first clamping plate 9 on the current transformer housing 1. Then, after starting, the motor 3 can drive the first gear 4 to rotate, and then drive the second gear 5 to rotate, so as to drive the eccentric wheel 7 to rotate to squeeze the installation edge 8 and the first clamping plate 9. When the installation edge 8 is squeezed, it will move to the right. When 8 is squeezed to the right by the eccentric wheel 7 and moves, the second clamping plate 10 can be driven to move to the right by the limiting rod 11. The first clamping plate 9 will move to the left after being squeezed by the eccentric wheel 7, and then it can move towards the second clamping plate 10 to clamp the connection of the intelligent molded case circuit breaker, so that the current transformer housing 1 can be connected with the intelligent molded case circuit breaker. Finally, when the current transformer is disassembled, it is only necessary to start the motor 3 to drive the eccentric wheel 7 to rotate again, so that the first clamping plate 9 and the second clamping plate 10 will not clamp the connection of the intelligent molded case circuit breaker, thereby facilitating the staff to quickly disassemble and assemble the current transformer. The second clamping plate 10 and the first clamping plate 9 can be reset by the reset spring 15, so that the first clamping plate 9 and the mounting edge 8 can always be in contact with the surface of the eccentric wheel 7.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A current transformer for an intelligent molded case circuit breaker, characterized in that: include: A current transformer housing (1), wherein a mounting plate (2) is mounted on the upper surface of the current transformer housing (1); A motor (3) is arranged on the right side of the upper surface of the mounting plate (2); a first gear (4) is coaxially mounted on the rotor of the motor (3); a second gear (5) is meshed on the surface of the first gear (4); An electric control module (6) is arranged on the front side of the motor (3); an eccentric wheel (7) is installed at the bottom of the second gear (5) via a connecting rod; and a mounting edge (8) is provided on the right side of the upper surface of the mounting plate (2); A first clamping plate (9) is arranged on the right side of the upper surface of the mounting plate (2), and the first clamping plate (9) and the mounting edge (8) are both in contact with the surface of the eccentric wheel (7). A second clamping plate (10) is arranged on the left side of the upper surface of the mounting plate (2), and the second clamping plate (10) is connected to the surface of the mounting edge (8).

2. The current transformer for intelligent molded case circuit breaker according to claim 1, characterized in that: Limit rods (11) are installed at the left front and rear of the mounting edge (8), and the limit rods (11) are inserted at both sides of the lower part of the first clamping plate (9), and the left ends of the limit rods (11) are connected to the surface of the second clamping plate (10).

3. The current transformer for intelligent molded case circuit breaker according to claim 1, characterized in that: Side baffles (12) are installed on the inner front and rear parts of the first clamping plate (9) and the second clamping plate (10).

4. The current transformer for intelligent molded case circuit breaker according to claim 1, characterized in that: The electric control module (6) is composed of a drive chip, a power device, a filter and a power supply module. The electric control module (6) is connected to the surface of the motor (3) via a wire.

5. The current transformer for intelligent molded case circuit breaker according to claim 1, characterized in that: Slide blocks (13) are installed at the front and rear parts of the bottom of the first clamping plate (9) and the second clamping plate (10), and slide grooves (14) are opened at the front and rear parts of the upper surface of the mounting plate (2), and the slide blocks (13) are embedded in the inner cavity of the slide grooves (14).

6. A current transformer for an intelligent molded case circuit breaker according to claim 5, characterized in that: A return spring (15) is installed between the sliders (13), a mounting seat (16) is installed on the upper surface of the mounting plate (2), and the motor (3) and the electric control module (6) are both installed on the upper surface of the mounting seat (16).

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