Shunt excitation auxiliary integrated accessory for molded case circuit breaker

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a shunt auxiliary integrated accessory for a molded case circuit breaker, which comprises a shell and an upper cover provided with a groove. A shunt auxiliary assembly is arranged in the groove, the shunt auxiliary assembly comprises a shell, and a first microswitch and a second microswitch are arranged in the shell; a swing rod is arranged on one side of the first microswitch and one side of the second microswitch and connected with the shell through a third torsional spring. A shunt excitation coil is also arranged in the shell; a rotating piece is arranged on one side of the shunt excitation coil; the rotating piece is connected with the shell through the spring, and the shunt release and the auxiliary contact are integrally designed, so that the cost is saved, and the space is saved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a shunt auxiliary integrated accessory for a molded case circuit breaker. Background Art

[0002] The internal accessories of molded case circuit breakers on the market, the shunt release and auxiliary contacts are separate. Generally, the shunt release is installed in one cavity and the auxiliary contacts are installed in another cavity. However, the 2-pole molded case circuit breaker and the 3-pole leakage circuit breaker have only one internal accessory cavity, so the shunt release and auxiliary contacts cannot be installed at the same time; shunt refers to adding a potential in the electrical control circuit of the circuit breaker to apply electromagnetic force to the circuit breaker solenoid to make it operate; auxiliary contact refers to the disconnection system control circuit separated from the main circuit, which is mainly used to operate, control, monitor the circuit breaker and prevent abnormal situations. Utility Model Content

[0003] The utility model integrates the shunt release and the auxiliary contact into an integrated design, so that both a 2-pole molded case circuit breaker and a 3-pole leakage circuit breaker can be installed, thereby saving cost and space.

[0004] The technical solution of the present utility model is as follows: a shunt auxiliary integrated accessory for a molded case circuit breaker, comprising a shell and an upper cover, the upper cover being provided with a groove; a shunt auxiliary component is installed in the groove, the shunt auxiliary component comprises an outer shell, a first micro switch and a second micro switch are provided in the outer shell; a rocker arm is provided on one side of the first micro switch and the second micro switch, the rocker arm is connected to the outer shell through a third torsion spring; a shunt coil is also provided in the outer shell; a rotating part is provided on one side of the shunt coil; the rotating part is connected to the outer shell through a third torsion spring.

[0005] Preferably, a mechanism and a handle are provided in the shell, a lower connecting rod is provided in the mechanism, and the lower connecting rod and the mechanism abut against the rotating shaft; the handle is located at the upper cover, a cover plate is provided above the upper cover, and the handle passes through the cover plate; the handle abuts against the mechanism through a lever; when the handle is turned, the mechanism drives the first rotating shaft to flip through the lower connecting rod.

[0006] Preferably, the first micro switch is provided with a first switch key, and a second switch key is provided on one side of the second micro switch, and the first switch key and the second switch key are within the movable range of the rocker arm.

[0007] Preferably, the mechanism component is provided with a buckle plate and a second rotating shaft; the second rotating shaft passes through the mechanism component and the buckle plate, and the buckle plate and the mechanism component are connected via a first torsion spring.

[0008] Preferably, the mechanism is provided with a lock and a third rotating shaft; the third rotating shaft passes through the mechanism component and the lock, and the lock and the mechanism component are connected via a second torsion spring.

[0009] Preferably, a movable contact is provided on the rotating shaft; and one side of the rocker arm is located within the movable travel of the first rotating shaft.

[0010] Preferably, an armature is provided on one side of the shunt coil, and the armature is clamped to the rotating part.

[0011] Preferably, a spring is provided between the handle and the lower connecting rod, and one side of the spring passes through the lever and abuts against the handle.

[0012] Preferably, a limiting member is provided near the rotating shaft of the movable contact member, and the limiting member is engaged with the movable contact member; a traction rod is provided on one side of the rotating member; and the rotating member can abut against the traction rod when rotating.

[0013] Preferably, when the product is in the open state, the upper end of the rocker arm abuts against the first switch key, and the first switch key is in a downward state at this time; when the handle is toggled to the closed position, the mechanism drives the first rotating shaft to flip through the lower connecting rod until the first rotating shaft and the dynamic contact are in the closed state. At this time, the first rotating shaft abuts one side of the rocker arm, and the rocker arm swings away from the first microswitch, and the first switch key is in a pop-up state at this time; when the product is in the closed state, the first rotating shaft abuts against the lower end of the rocker arm, and the rocker arm swings away from the second microswitch, and the second switch key is in a pop-up state. When the second microswitch is energized, the armature moves upward, thereby driving the rotating member to rotate, and one end of the rotating member abuts against the flipped traction rod, thereby disengaging the mechanism. At this time, the first rotating shaft flips away from the rocker arm, and the rocker arm abuts against the first microswitch and the second microswitch under the torsional force of the third torsion spring.

[0014] Compared with the prior art, the present invention provides an integrated shunt auxiliary accessory for a molded case circuit breaker, which has at least one of the following beneficial effects:

[0015] 1. The shunt release and auxiliary contact are integrated into one design, saving cost and space.

[0016] 2. It enables 2-pole molded case circuit breakers to achieve remote shunt tripping and remote monitoring of the circuit breaker's opening and closing status, making it safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 This is a three-dimensional view of an embodiment of the utility model in the first direction without the housing.

[0019] Figure 2This is a three-dimensional view of the embodiment of the utility model in the second direction without the housing.

[0020] Figure 3 This is a three-dimensional diagram of an embodiment of the present invention without the housing and the upper cover.

[0021] Figure 4 It is a cross-sectional view of an embodiment of the present utility model.

[0022] Figure 5 for Figure 4 A-direction enlarged view.

[0023] Reference numerals

[0024] 1-housing; 11-shunt coil; 12-rotating member; 13-mechanical member; 131-load plate; 132-second rotating shaft; 133-first torsion spring; 134-locking catch; 135-third rotating shaft; 136-second torsion spring; 14-handle; 141-spring; 15-lower connecting rod; 16-first rotating shaft; 161-moving contact; 17-lever; 18-armature; 19-limiting member; 20-traction rod; 2-upper cover; 21-groove; 22-shunt auxiliary assembly; 23-housing; 24-first microswitch; 241-first on / off key; 25-second microswitch; 251-second on / off key; 26-rocker; 261-third torsion spring; 3-cover plate; DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0027] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, article, or apparatus. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0030] like Figures 1 to 3 As shown, it includes a housing 1 and an upper cover 2, the upper cover 2 is provided with a groove 21; the groove 21 is provided with a shunt auxiliary component 22, the shunt auxiliary component 22 includes a shell 23, the shell 23 is provided with a first micro switch 24 and a second micro switch 25; a rocker 26 is provided on one side of the first micro switch 24 and the second micro switch 25, and the rocker 26 is connected to the shell 23 through a third torsion spring 261; a shunt coil 11 is further provided in the shell 23; a rotating member 12 is provided on one side of the shunt coil 11; The rotating part 12 is connected to the housing 23 through a third torsion spring; a mechanism part 13 and a handle 14 are provided in the housing 23, and a lower connecting rod 15 is provided in the mechanism part 13, and the lower connecting rod 15 and the mechanism part 13 abut against the first rotating shaft 16; the handle 14 is located at the upper cover 2, and a cover plate 3 is provided above the upper cover 2, and the handle 14 passes through the cover plate 3; the handle 14 abuts against the mechanism part 13 through a lever 17; when the handle 14 is turned, the mechanism part 13 drives the first rotating shaft 16 to flip through the lower connecting rod 15, and the integrated design of the shunt release and the auxiliary contact saves cost and space, so that both 2-pole molded case circuit breakers and 3-pole leakage circuit breakers can be installed, and the 2-pole molded case circuit breaker can also achieve remote shunt tripping and remote monitoring of the opening and closing status of the circuit breaker, which is safer and more reliable.

[0031] like Figures 1 to 5As shown, the first micro switch 24 is provided with a first switch key 241, and the second micro switch 25 is provided with a second switch key 251 on one side. The first switch key 241 and the second switch key 251 are within the movable range of the rocker 26; the mechanism 13 is provided with a buckle plate 131 and a second rotating shaft 132; the second rotating shaft 132 passes through the mechanism 13 and the buckle plate 131, and the buckle plate 131 and the mechanism 13 are connected by a first torsion spring 133; the mechanism 13 is provided with a lock 134 and a third Rotating shaft 135; the third rotating shaft 135 passes through the mechanism 13 and the lock catch 134, and the lock catch 134 and the mechanism 13 are connected via a second torsion spring 136; a dynamic contact 161 is provided on the first rotating shaft 16; one side of the rocker arm 26 is located within the movable range of the first rotating shaft 16; an armature 18 is provided on one side of the shunt coil 11, and the armature 18 engages the rotating member 12; a spring 141 is provided between the handle 14 and the lower connecting rod 15, and one side of the spring 141 passes through the lever 17 and abuts the handle 14. The dynamic contact 161 is provided with a limiter 19 near the first rotating shaft 16, and the limiter 19 engages the dynamic contact 161; a traction rod 20 is provided on one side of the rotating member 12; the rotating member 12 can abut the traction rod 20 when it rotates.

[0032] When the product is in the open state, the upper end of the rocker 26 abuts against the first switch key 241, and the first switch key 241 is in the pressed state; when the handle 14 is toggled to the closed position, the mechanism 13 drives the first rotating shaft 16 to flip through the lower connecting rod 15 until the first rotating shaft 16 and the dynamic contact 161 are in the closed state. At this time, the first rotating shaft 16 abuts against one side of the rocker 26, and the rocker 26 swings away from the first micro switch 24. At this time, the first switch key 241 is in the pop-up state; when the product is in the closed state In the engaged state, the first rotating shaft 16 abuts against the lower end of the rocker rod 26, and the rocker rod 26 swings away from the second microswitch 25. At this time, the second switch key 251 is in the pop-up state. When the second microswitch 25 is energized, the armature 18 moves upward, thereby driving the rotating member 12 to rotate. One end of the rotating member 12 abuts against the flipped traction rod 20. At this time, the first rotating shaft 16 flips away from the rocker rod 26. The rocker rod 26 abuts against the first microswitch 24 and the second microswitch 25 under the torsional force of the third torsion spring 261.

[0033] Working principle:

[0034] 1. When the product is in the free trip and opening state (ON position), the upper end of the rocker 26 abuts against the first switch key 241. At this time, the first switch key 241 is in the downward state, and the lead wires F11 and F12 are connected.

[0035] 2. When the handle 14 is turned to the closed position (OFF position), the mechanism 13 drives the first rotating shaft 16 to flip through the lower connecting rod 15 until the first rotating shaft 16 and the movable contact 161 are in the closed state. At this time, the protrusion on the first rotating shaft 16 abuts the lower end of the rocker 26. After the rocker 26 swings, the upper end leaves the first microswitch 24. At this time, the first switch key 241 is in the pop-up state, and the lead wires F11 and F14 are connected.

[0036] 3. When the product is in the closed state (OFF position), the protrusion on the first rotating shaft 16 abuts against the lower end of the rocker 26, and the rocker 26 swings away from the second microswitch 25. At this time, the second switch key 251 is in the pop-up state. At this time, 220V is energized to the lead wires A1 and A2 of the second microswitch 25. At this time, the shunt coil 11 is energized to generate a magnetic field force, which attracts the armature 18 to move upward, and the rotating part 12 will be forced to rotate. One end of the rotating part 12 flips the traction rod 20, causing the mechanism to trip, thereby tripping the product. At this time, the first rotating shaft 16 will flip upward, and the first rotating shaft 16 will naturally leave the rocker 26. Under the torsional force of the third torsion spring 261, the upper end of the rocker 26 abuts against the first microswitch 24 and the second microswitch 25. At this time, the shunt coil 11 will lose power and the armature 18 will return to its original state.

[0037] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A shunt auxiliary integrated accessory for a molded case circuit breaker, comprising a housing and an upper cover, characterized in that: The upper cover is provided with a groove; a shunt auxiliary component is installed in the groove, and the shunt auxiliary component includes a shell, and a first micro switch and a second micro switch are provided in the shell; a rocker arm is provided on one side of the first micro switch and the second micro switch, and the rocker arm is connected to the shell through a third torsion spring; a shunt coil is also provided in the shell; a rotating part is provided on one side of the shunt coil; the rotating part is connected to the shell through a third torsion spring.

2. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 1, characterized in that: A mechanism and a handle are provided in the shell, a lower connecting rod is provided in the mechanism, and the lower connecting rod and the mechanism abut against the rotating shaft; the handle is located on the upper cover, a cover plate is provided above the upper cover, and the handle passes through the cover plate; the handle abuts against the mechanism through a lever; when the handle is turned, the mechanism drives the first rotating shaft to flip through the lower connecting rod.

3. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 1, characterized in that: The first micro switch is provided with a first switch key, and a second switch key is provided on one side of the second micro switch. The first switch key and the second switch key are located within the movable range of the rocker arm.

4. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 2, characterized in that: The mechanism component is provided with a buckle plate and a second rotating shaft; the second rotating shaft passes through the mechanism component and the buckle plate, and the buckle plate and the mechanism are connected via a first torsion spring.

5. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 2, characterized in that: The mechanism is provided with a lock and a third rotating shaft; the third rotating shaft passes through the mechanism and the lock, and the lock and the mechanism are connected via a second torsion spring.

6. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 2, characterized in that: A moving contact is provided on the rotating shaft; and one side of the rocker arm is located within the movable travel of the first rotating shaft.

7. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 1, characterized in that: An armature is provided on one side of the shunt coil, and the armature is clamped with the rotating part.

8. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 2, characterized in that: A spring is provided between the handle and the lower connecting rod, and one side of the spring passes through the lever and abuts against the handle.

9. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 6, characterized in that: The movable contact member is provided with a limiting member near the first rotating shaft, and the limiting member is engaged with the movable contact member; a traction rod is provided on one side of the rotating member; and the rotating member can abut against the traction rod when rotating.

10. The integrated shunt auxiliary accessory for a molded case circuit breaker according to claim 9, characterized in that: When the product is in the open state, the upper end of the rocker arm abuts against the first switch key, and the first switch key is in a downward state; when the handle is turned to the closed position, the mechanism drives the rotating shaft to flip through the lower connecting rod until the first rotating shaft and the dynamic contact are in the closed state. At this time, the rotating shaft abuts one side of the rocker arm, and the rocker arm swings away from the first microswitch. At this time, the first switch key is in a pop-up state; when the product is in the closed state, the first rotating shaft abuts against the lower end of the rocker arm, and the rocker arm swings away from the second microswitch. At this time, the second switch key is in a pop-up state. When the second microswitch is energized, the armature moves upward, thereby driving the rotating part to rotate, and one end of the rotating part abuts against the flipped traction rod, thereby causing the mechanism to disengage. At this time, the first rotating shaft flips away from the rocker arm, and the rocker arm abuts against the first microswitch and the second microswitch under the torsional force of the third torsion spring.

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