A circuit breaker with quick push-in connection and anti-hot plug mechanism

Abstract

The present invention relates to the technical field of electric power equipment, specifically a circuit breaker with a quick push-in connection and an anti-hot plug mechanism, including a base and a top cover, the base and the top cover are connected by four shell rivets, one end of the base is plugged with a negative external power line and a positive external power line, the other end is plugged with a positive load line and a negative load line, the positive external power line is connected to a positive connection terminal, the negative external power line is connected to a negative connection terminal, and the positive connection terminal and the negative connection terminal are both installed in the base through closed spring clips. The operation is also convenient when removing and replacing, just press the lock switch through the crank locking limit rod, the crank pops open, the power is disconnected, and it can be directly pulled out and replaced with new parts to prevent large electric sparks from being generated when pulled out when it is energized, and burn the parts at the connection to cause accidents. In addition, the circuit breaker product can be quickly replaced when the power is off, and no auxiliary tools are required.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, in particular to a circuit breaker with a quick push-in connection and an anti-live hot plug mechanism. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. When they have serious overloads or short circuits and undervoltage faults, they can automatically cut off the circuit. Its function is equivalent to the combination of fuse switches and over-underheating relays. Moreover, it is generally not necessary to change parts after breaking the fault current.

[0003] Today's circuit breakers require the use of tools for quick connection. If they are pulled out while energized (power is still closed), large sparks will occur, burning the parts at the connection and causing accidents. In view of this, we provide a circuit breaker with a quick push-in connection and an anti-energized hot-swap mechanism. Summary of the invention

[0004] The object of the present invention is to provide a circuit breaker with a quick push-in connection and an anti-hot plug mechanism under power on, so as to solve the problem mentioned in the above background technology that the circuit breaker now needs to be quickly connected with the help of tools, and when it is pulled out under power on (the power supply is still in a closed state), a large electric spark will occur, which will burn the parts at the connection and cause accidents.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circuit breaker with a quick push-in connection and an anti-hot plug mechanism, comprising a base and a top cover, wherein the base and the top cover are connected by four shell rivets, one end of the base is plugged with a negative external power line and a positive external power line, and the other end is plugged with a positive load line and a negative load line, the positive external power line is connected to a positive connection terminal, the negative external power line is connected to a negative connection terminal, the positive connection terminal and the negative connection terminal are both installed in the base through closed spring sheets, the closed spring sheets are connected to a rocker button, the rocker button is connected to a crank, the crank is connected to the base through a crank pin, and a crank fixing pin is installed on one side of the crank The bottom of the crank is connected to a tripping mechanism assembly through a crank and a tripping assembly pin shaft, the tripping mechanism assembly includes a tripping mechanism lock, the bottom of the tripping mechanism lock is connected to a moving contact arm through a moving contact arm and a tripping assembly pin shaft, one side of the moving contact arm is connected to a moving contact arm limiting lever, a side of the moving contact arm limiting lever away from the moving contact arm is provided with a plurality of arc extinguishing sheets, the moving contact arm is installed on the base through the moving contact arm pin shaft, one side of the moving contact arm is clamped with a moving contact arm main spring, the bottom of the moving contact arm is connected to an armature, the armature is installed on the base through the armature pin shaft, an armature reset torsion spring is sleeved on the armature pin shaft, an iron bracket is provided at the bottom of the armature, and the iron bracket is installed on the base through the iron bracket locating pin.

[0006] Preferably, the positive load line is also connected to a positive connection terminal, the negative load line is connected to a clamp-type terminal, the positive connection terminal on the positive load line and the outside of the clamp-type terminal are both provided with spring plates, a hydraulic oil cup is provided between the two spring plates, a coil is provided outside the hydraulic oil cup, the clamp-type terminal is connected to a terminal connection braid, the end of the terminal connection braid away from the clamp-type terminal is connected to a terminal, and a static contact is provided on the terminal.

[0007] Preferably, the number of the arc-extinguishing sheets is 5-10.

[0008] Preferably, a circuit breaker disassembly button is provided on one side of the top cover.

[0009] Preferably, a first return spring is provided on the circuit breaker disassembly and assembly button.

[0010] Preferably, a crank locking limit rod is provided on one side of the base.

[0011] Preferably, a second return spring is installed on the crank locking limit rod.

[0012] Preferably, the coil is connected to the moving contact arm through the moving contact arm and the pigtail at the starting end of the coil.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This circuit breaker with quick push-in connection and anti-hot plug mechanism does not require any tools for quick connection. It uses the elasticity of the parts themselves and the elastic force of the additional springs to clamp the connecting conductors so that they can generate contact pressure to meet the ability of contacting external conductivity. When pushing the circuit into the circuit, the circuit breaker can only be inserted when it is disconnected, otherwise it cannot be connected to the electrical circuit. The same is true when removing and replacing: the circuit breaker can only be pulled out when it is disconnected, and it is controlled by a lock switch and cannot be pulled out when it is energized.

[0015] 2. The circuit breaker with quick push-in connection and anti-hot-swap mechanism is convenient for electrical connection. When in use, push the negative external power line and the positive external power line into the base to achieve reliable electrical connection. It is also convenient to remove and replace. You only need to press the lock switch through the crank locking limit rod, the crank will pop open, the power will be disconnected, and you can directly pull it out and replace new parts to prevent large electric sparks from being generated when it is pulled out under power, burning the parts at the connection and causing accidents. In addition, the circuit breaker product can be quickly replaced in the case of power failure without the need to use any auxiliary tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the circuit breaker of the present invention when the circuit is closed;

[0017] Figure 2 It is a schematic diagram of the internal structure of the circuit breaker of the present invention when the circuit is closed;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the circuit breaker of the present invention when the circuit is disconnected;

[0019] Figure 4 It is a schematic diagram of the internal structure of the circuit breaker of the present invention when the circuit is disconnected;

[0020] Figure 5 It is a schematic diagram of the overall structure of the present invention when it is inverted;

[0021] Figure 6 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 7 It is a schematic diagram of the top structure of the present invention.

[0023] In the figure: 1. Clip terminal; 2. Spring clip; 3. Terminal connection pigtail; 4. Isolation rib plate; 5. Terminal; 6. Static contact 7. Moving contact; 8. Arc extinguishing piece; 9. Moving contact arm; 10. Moving contact arm and trip assembly pin; 11. Moving contact arm limit stop lever; 12. Trip mechanism assembly; 13. Crank and trip assembly pin; 14. Crank; 15. Crank pin; 16. Rocker button; 17. Negative connection terminal; 18. Closed spring clip; 19. Negative external power cord; 20. Positive external power cord; 21. Positive connection terminal; 22. Casing rivets; 24, crank positioning block; 25, trip mechanism lock; 26, moving contact arm pin; 27, moving contact arm main spring; 28, armature pin; 29, armature reset torsion spring; 30, armature; 31, iron bracket; 32, coil; 33, iron bracket positioning pin; 34, hydraulic oil cup; 35, positive load line; 36, negative load line; 37, base; 38, top cover; 39, circuit breaker disassembly and assembly button; 40, first reset spring; 41, crank locking limit rod; 42, second reset spring; 43, moving contact arm and coil starting end braid. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] See also Figure 1-7 , the present invention provides the following technical solutions:

[0027] A circuit breaker with a quick push-in connection and an anti-hot plug mechanism, such as Figure 2 , Figure 4 and Figure 5As shown, it includes a base 37 and a top cover 38. A circuit breaker disassembly button 39 is provided on one side of the top cover 38, and a first return spring 40 is provided on the circuit breaker disassembly button 39. A crank locking limit rod 41 is provided on one side of the base 37, and a second return spring 42 is installed on the crank locking limit rod 41. The circuit breaker disassembly button 39 can be used for disassembly and assembly.

[0028] Further, such as Figure 1 , Figure 6 and Figure 7 As shown, the base 37 and the top cover 38 are connected by four shell rivets 22, one end of the base 37 is plugged with a negative external power line 19 and a positive external power line 20, and the other end is plugged with a positive load line 35 and a negative load line 36, the positive external power line 20 is connected to a positive connection terminal 21, the negative external power line 19 is connected to a negative connection terminal 17, the positive connection terminal 21 and the negative connection terminal 17 are both installed in the base 37 through a closed spring sheet 18, the closed spring sheet 18 is connected to a rocker button 16, the rocker button 16 is connected to a crank 14, the crank 14 is connected to the base 37 through a crank pin 15, and a crank is installed on one side of the crank 14. Positioning block 24, the bottom of the crank 14 is connected to the tripping mechanism assembly 12 through the crank and the tripping assembly pin 13, the tripping mechanism assembly 12 includes a tripping mechanism lock 25, the bottom of the tripping mechanism lock 25 is connected to the moving contact arm 9 through the moving contact arm and the tripping assembly pin 10, one side of the moving contact arm 9 is connected to the moving contact arm limiting lever 11, and a plurality of arc extinguishing sheets 8 are arranged on the side of the moving contact arm limiting lever 11 away from the moving contact arm 9, and the number of arc extinguishing sheets 8 is arranged at 5-10 sheets. As a preferred technical solution of this embodiment, the number of arc extinguishing sheets 8 is arranged at 6 sheets, and the arc extinguishing sheets 8 must be insulated to facilitate cutting the arc into different segments, increase the arc voltage, and make the arc cool and extinguish quickly.

[0029] It is worth noting that if Figure 3 As shown, the movable contact arm 9 is installed on the base 37 through the movable contact arm pin 26, and the movable contact arm main spring 27 is clamped on one side of the movable contact arm 9. The bottom of the movable contact arm 9 is connected to the armature 30, and the armature 30 is installed on the base 37 through the armature pin 28. The armature pin 28 is sleeved with an armature reset torsion spring 29. The bottom of the armature 30 is provided with an iron bracket 31, and the iron bracket 31 is installed on the base 37 through the iron bracket positioning pin 33. The quick connection method does not require any tools. The elasticity of the parts themselves and the elastic force of the additional springs are used to clamp the connecting conductors so that they generate contact pressure with each other to meet the ability of contacting external conductivity. When pushing the circuit into contact, the circuit breaker can only be inserted when it is disconnected, otherwise it cannot be connected to the electrical circuit. The same is true when removing and replacing: it can only be pulled out when the circuit breaker is disconnected. It is controlled by a lock switch and cannot be pulled out when it is energized.

[0030] Specifically, the positive load line 35 is also connected to the positive connection terminal 21, and the negative load line 36 is connected to the clamp terminal 1. The positive connection terminal 21 on the positive load line 35 and the outside of the clamp terminal 1 are both provided with springs 2, and a hydraulic oil cup 34 is provided between the two springs 2. A coil 32 is provided outside the hydraulic oil cup 34, and the coil 32 is connected to the moving contact arm 9 through the moving contact arm and the coil starting end braid 43. The clamp terminal 1 is connected to the terminal connection braid 3, and the end of the terminal connection braid 3 away from the clamp terminal 1 is connected to the terminal 5, and the static contact 6 is provided on the terminal 5, and the moving contact arm 9 is provided with a moving contact 7.

[0031] When the circuit breaker with quick push-in connection and anti-hot plug mechanism is used, the negative external power line 19 and the positive external power line 20 are pushed into the base 37 to achieve reliable electrical connection. It is also convenient to remove and replace. It only needs to press the lock switch through the crank locking limit rod 41, the crank 14 pops open, and the power is disconnected. Then, it can be directly pulled out and replaced with new parts to prevent large electric sparks from being generated when it is pulled out under power, which may burn the parts at the connection and cause accidents. In addition, the circuit breaker product can be quickly replaced in the case of power failure without the need to use any auxiliary tools.

[0032] When the product operator is in the ON state, the bottom of the buckle is held by the crank and the buckle cannot be retracted into the product, so the product cannot be inserted into the chassis, thereby preventing the product from being misoperated and causing the wiring terminals and the circuit in the chassis to be misconnected and form arcs.

[0033] When in the OFF state, the crank does not press against the buckle, the buckle can be freely retracted into the product, and the product can be smoothly pushed into the chassis.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A circuit breaker with a quick push-in connection and an anti-hot-swap mechanism, characterized in that: The invention comprises a base (37) and a top cover (38), wherein the base (37) and the top cover (38) are connected via four shell rivets (22), one end of the base (37) is plugged with a negative external power line (19) and a positive external power line (20), and the other end is plugged with a positive load line (35) and a negative load line (36), the positive external power line (20) is connected to a positive connection terminal (21), and the negative external power line (19) is connected to a negative connection terminal ( 17), the positive electrode connection terminal (21) and the negative electrode connection terminal (17) are both installed in the base (37) through a closed spring sheet (18), the closed spring sheet (18) is connected to a rocker button (16), the rocker button (16) is connected to a crank (14), the crank (14) is connected to the base (37) through a crank pin (15), a crank positioning block (24) is installed on one side of the crank (14), and the bottom of the crank (14) is connected to the trip assembly pin (15) through the crank. 3) is connected to a tripping mechanism assembly (12), the tripping mechanism assembly (12) comprising a tripping mechanism lock (25), the bottom of the tripping mechanism lock (25) is connected to a moving contact arm (9) through a moving contact arm and a tripping assembly pin shaft (10), one side of the moving contact arm (9) is connected to a moving contact arm limit stop lever (11), a side of the moving contact arm limit stop lever (11) away from the moving contact arm (9) is provided with a plurality of arc extinguishing pieces (8), the moving contact arm (9) is connected to the moving contact arm pin shaft (2 6) mounted on a base (37), one side of the movable contact arm (9) is clamped with a movable contact arm main spring (27), the bottom of the movable contact arm (9) is connected with an armature (30), the armature (30) is mounted on the base (37) via an armature pin (28), an armature reset torsion spring (29) is sleeved on the armature pin (28), an iron bracket (31) is provided at the bottom of the armature (30), and the iron bracket (31) is mounted on the base (37) via an iron bracket positioning pin (33); The positive load line (35) is also connected to a positive connection terminal (21), and the negative load line (36) is connected to a clamp terminal (1). The positive connection terminal (21) on the positive load line (35) and the clamp terminal (1) are both provided with springs (2) on the outside, a hydraulic oil cup (34) is provided between the two springs (2), a coil (32) is provided outside the hydraulic oil cup (34), the clamp terminal (1) is connected to a terminal connection braid (3), an end of the terminal connection braid (3) away from the clamp terminal (1) is connected to a terminal (5), and a static contact (6) is provided on the terminal (5); the coil (32) is connected to the moving contact arm (9) through the moving contact arm and the coil starting end braid (43); A crank locking limit rod (41) is provided on one side of the base (37).

2. The circuit breaker with quick push-in connection and anti-hot plug mechanism according to claim 1, characterized in that: The number of the arc extinguishing sheets (8) is set to be 5-10.

3. The circuit breaker with quick push-in connection and anti-hot plug mechanism according to claim 1, characterized in that: A circuit breaker disassembly button (39) is provided on one side of the top cover (38).

4. The circuit breaker with quick push-in connection and anti-hot plug mechanism according to claim 3, characterized in that: The circuit breaker disassembly button (39) is provided with a first return spring (40).

5. The circuit breaker with quick push-in connection and anti-hot plug mechanism according to claim 1, characterized in that: A second return spring (42) is mounted on the crank locking limit rod (41).

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