A four miniature circuit breaker

Abstract

The utility model discloses a four can miniature circuit breaker, its technical scheme main points are including first operation module, second operation module, third operation module, fourth operation module and electronic module, first operation module, second operation module, third operation module, fourth operation module are connected in proper order and set, and electronic module is detachably installed in the side of first operation module away from second operation module, first operation module includes circuit breaker bottom and circuit breaker cover and operating mechanism, and operating mechanism sets up between circuit breaker bottom and circuit breaker cover, electronic module includes electric operation bottom and electric operation cover, circuit board and link plate, and electric operation bottom and circuit breaker cover form the installation cavity in combination, and electric operation bottom sets up in the installation cavity, and will install the cavity and divide into line cavity and link cavity, and circuit board installs in line cavity, and link plate installs in link cavity, and this miniature circuit breaker can realize electromechanical separation at the same time, and the space is arranged reasonably and effectively.

Description

Technical Field

[0001] This utility model relates to a circuit breaker, and more specifically, to a four-way miniature circuit breaker. Background Technology

[0002] The four-in-one miniature circuit breaker (MCB) is an intelligent terminal power distribution device that integrates "monitoring, control, protection, and communication" functions. Its core design breaks through the traditional circuit breaker's single protection function. By integrating high-precision sensors, intelligent control modules, and communication interfaces, it achieves real-time perception of circuit status, remote control, precise protection, and data interaction, meeting the dual needs of industrial, commercial, and civil buildings for power safety and energy efficiency management.

[0003] The existing four-integrated circuit breaker is an integrated structure, which means that the physical actions of the mechanical system (such as contact opening and closing, arc extinguishing) are closely combined with the information processing of the electronic system (such as signal acquisition and logical judgment) to form a closed-loop control of "sensing-decision-execution".

[0004] While the mechatronics integration of circuit breakers brings significant advantages such as intelligence, high reliability, and functional expansion, it also has some drawbacks in practical applications. For example, this type of circuit breaker is an integrated design, with the circuit board, connection board, and operating mechanism all installed adjacent to each other. When it is necessary to upgrade or maintain the electronic system, a complete disassembly is required, which is cumbersome and time-consuming. Moreover, when the circuit breaker interrupts the fault current, it will generate an electric arc and mechanical impact (such as contact bounce and arc-extinguishing chamber vibration). If the circuit board and the connection board are in direct contact, it may cause copper foil breakage, solder joint detachment, or component damage.

[0005] Therefore, a new type of four-functional miniature circuit breaker is needed, which can achieve electromechanical separation while making reasonable and effective spatial arrangements. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a four-functional miniature circuit breaker that can achieve electromechanical separation while making reasonable and effective spatial arrangement.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a four-way miniature circuit breaker, comprising a first operating module, a second operating module, a third operating module, a fourth operating module, and an electronic module, wherein the first operating module, the second operating module, the third operating module, and the fourth operating module are connected in sequence, and the electronic module is detachably installed on the side of the first operating module away from the second operating module; The first operating module includes a circuit breaker base and a circuit breaker cover, as well as an operating mechanism, wherein the operating mechanism is disposed between the circuit breaker base and the circuit breaker cover. The electronic module includes an operating base and an operating cover, a circuit board, and a connecting plate. The operating base and the circuit breaker cover together form an installation cavity. The operating base is disposed in the installation cavity and divides the installation cavity into a circuit cavity and a connecting cavity. The circuit board is installed in the circuit cavity, and the connecting plate is installed in the connecting cavity.

[0008] The present invention is further configured such that: a first through groove is provided through the electric operating cover, and multiple sets of the first through groove are provided.

[0009] The present invention is further configured such that multiple sets of wire grooves are provided on the circuit breaker cover.

[0010] The present invention is further configured such that: a mounting part protrudes from the side of the circuit breaker cover facing the electric control cover, and an installation opening is provided on the side of the mounting part facing the electric control cover; a cover plate is detachably installed at the installation opening, and a connecting plate is detachably installed between the cover plate and the mounting part.

[0011] The present invention is further configured such that: a plurality of second through slots are provided through the cover plate, and the second through slots are provided in a one-to-one correspondence with the first through slots; The connecting plate is provided with multiple sets of wiring terminals, which extend into the circuit cavity through the first through groove.

[0012] The present invention is further configured such that: the electric operating base is provided with multiple sets of guide parts, and the circuit board is provided with multiple sets of guide ports.

[0013] The present invention is further configured such that: multiple sets of positioning blocks are provided on the circuit board, and positioning grooves are provided on both sides of the electric control cover and the electric control bottom.

[0014] The present invention is further configured such that: the operating mechanism includes a locking mechanism, a motor tripping mechanism, a magnetic tripping mechanism, a leakage current tripping component, and a handle mechanism; the motor tripping mechanism and the magnetic tripping mechanism are linked to the locking mechanism through the leakage current tripping component. The handle mechanism and the locking mechanism are linked together.

[0015] The present invention is further configured such that: the motor tripping mechanism includes a drive motor, a worm gear, a worm wheel, a transmission shaft, a linkage gear set, a tripping gear, and a tripping block, wherein the worm gear is disposed at the output end of the drive motor; Both the worm gear and the linkage gear set are mounted on the transmission shaft, and the worm gear is meshed with the worm. The linkage gear set is linked with the worm gear and the release gear; The tripping block is mounted on the tripping gear. When the tripping gear rotates, the tripping block can drive the leakage tripping component to rotate.

[0016] The present invention is further configured such that: the linkage gear set includes a transmission gear, a T-shaped gear and a central column gear, the transmission gear is connected to a worm gear, and the T-shaped gear is meshed with the transmission gear and the central column gear respectively; The central column gear is meshed with the release gear.

[0017] In summary, this utility model has the following beneficial effects: by installing the operating mechanism, circuit board, and connecting plate separately in separate cavities, the circuit board and connecting plate are physically isolated, mechanical stress (such as vibration and impact) is absorbed by the cavity structure, and the circuit board only bears its own installation stress, thus significantly improving reliability.

[0018] The electromechanical system employs a separation design, with the operating mechanism and electrical components (such as the control board and sampling circuit) designed independently. A failure in a single module will not trigger a cascading effect. For example, contact wear only affects conductivity and will not interfere with signal acquisition by the control board; a control board failure will only cause the protection function to fail and will not hinder manual tripping operations. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of a four-way miniature circuit breaker; Figure 2 This is a schematic diagram showing the separate structure of the first operating module and the electronic module; Figure 3 A three-dimensional structural diagram of the circuit breaker cover; Figure 4 This is a schematic diagram of the separate structure of the electronic module; Figure 5 This is a three-dimensional structural diagram of the operating mechanism; Figure 6 This is a three-dimensional structural diagram of the motor tripping mechanism.

[0020] Reference numerals: 1. First operating module; 11. Circuit breaker bottom; 12. Circuit breaker cover; 121. Conductor trough; 122. Mounting part; 13. Operating mechanism; 14. Cover plate; 141. Second through slot; 2. Second operating module; 3. Third operating module; 4. Fourth operating module; 5. Electronic module; 51. Electrical operating bottom; 511. Guide part; 512. Positioning slot; 52. Electrical operating cover; 521. First through slot; 53. Circuit board; 531. Guide port; 532. Positioning block; 54. Connecting plate; 541. Terminal block; 6. Locking mechanism; 7. Motor tripping mechanism; 71. Drive motor; 72. Worm gear; 73. Worm wheel; 74. Drive shaft; 75. Linkage gear set; 751. Transmission gear; 752. T-gear; 753. Central column gear; 76. Tripping gear; 77. Tripping block; 8. Magnetic tripping mechanism; 9. Leakage tripping component; 91. Handle mechanism. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0022] Reference Figures 1 to 6 As shown, in order to achieve the above objectives, the present invention provides the following technical solution: a four-way miniature circuit breaker, comprising a first operation module 1, a second operation module 2, a third operation module 3, a fourth operation module 4 and an electronic module 5, wherein the first operation module 1, the second operation module 2, the third operation module 3 and the fourth operation module 4 are connected in sequence, and the electronic module 5 is detachably installed on the side of the first operation module 1 away from the second operation module 2; The first operating module 1 includes a circuit breaker base 11, a circuit breaker cover 12, and an operating mechanism 13, which is located between the circuit breaker base 11 and the circuit breaker cover 12. The electronic module 5 includes an operating base 51 and an operating cover 52, a circuit board 53 and a connecting plate 54. The operating base 51 and the circuit breaker cover 12 together form an installation cavity. The operating base 51 is set in the installation cavity and divides the installation cavity into a circuit cavity and a connecting cavity. The circuit board 53 is installed in the circuit cavity and the connecting plate 54 is installed in the connecting cavity.

[0023] The design of this utility model separates the operating mechanism 13, the circuit board 53, and the connecting plate 54 into separate cavities, thereby physically isolating the circuit board 53 from the connecting plate 54. Mechanical stress (such as vibration and impact) is absorbed by the cavity structure, and the circuit board 53 only bears its own installation stress, which significantly improves reliability.

[0024] The electromechanical system is designed with independent control mechanism 13 and electrical components (such as control board and sampling circuit), so a single module failure will not trigger a chain reaction. For example, contact wear only affects conductivity and will not interfere with signal acquisition by the control board; a control board failure will only cause the protection function to fail and will not hinder manual tripping operations.

[0025] The present invention is further configured such that: a first through groove 521 is provided through the electric control cover 52, and multiple sets of the first through groove 521 are provided. The design of the first through groove 521 facilitates the communication between the circuit cavity and the connecting cavity, and also facilitates the separate placement of the circuit board 53 and the connecting plate 54.

[0026] The present invention is further configured such that: multiple sets of wire grooves 121 are provided on the circuit breaker cover 12.

[0027] This utility model is further configured such that: a mounting portion 122 protrudes from the side of the circuit breaker cover 12 facing the electric control cover 52, and an installation opening is provided on the side of the mounting portion 122 facing the electric control cover 52. A cover plate 14 is detachably installed at the installation opening, and a connecting plate 54 is detachably installed between the cover plate 14 and the mounting portion 122. This structural design saves space, as the circuit breaker cover 12 and the electric control cover 52 directly enclose and form a connecting cavity for the installation of the connecting plate 54, saving additional shell structure and improving space utilization.

[0028] The present invention is further configured such that: a plurality of second through slots 141 are provided through the cover plate 14, and the second through slots 141 are provided in a one-to-one correspondence with the first through slots 521; The connecting plate 54 is provided with multiple sets of wiring terminals 541, which extend into the circuit cavity through the first through groove 521.

[0029] The design of this structure involves first placing the connecting plate 54 inside the mounting part 122, then installing the cover plate 14 on the mounting part 122 and tightening it with bolts. At this time, the wiring terminals 541 on the connecting plate 54 pass through the second through slot 141 and the first through slot 521 in sequence, and the circuit board 53 can achieve the final connection with the wiring terminals 541 through wires.

[0030] The present invention is further configured such that: multiple sets of guide parts 511 are provided inside the electric control base 51, and multiple sets of guide openings 531 are provided on the circuit board 53.

[0031] The circuit board 53 is provided with multiple sets of positioning blocks 532, and the electric control cover 52 and the electric control base 51 are provided with positioning grooves 512 on both sides.

[0032] The design of this structure, such as Figure 4 As shown, the guide port 531 and guide part 511 can effectively limit the left and right sides of the circuit board 53, and the positioning block 532 and positioning groove 512 can effectively limit the front and back of the circuit board 53.

[0033] The present invention is further configured such that: the operating mechanism 13 includes a locking mechanism 6, a motor tripping mechanism 7, a magnetic tripping mechanism 8, a leakage current tripping component 9, and a handle mechanism 91; the motor tripping mechanism 7 and the magnetic tripping mechanism 8 are linked with the locking mechanism 6 through the leakage current tripping component 9. The handle mechanism 91 is linked with the locking mechanism 6.

[0034] The present invention is further configured such that: the motor tripping mechanism 7 includes a drive motor 71, a worm 72, a worm wheel 73, a transmission shaft 74, a linkage gear set 75, a tripping gear 76, and a tripping block 77, with the worm 72 disposed at the output end of the drive motor 71; Both the worm gear 73 and the linkage gear set 75 are mounted on the drive shaft 74, and the worm gear 73 is meshed with the worm 72; The linkage gear set 75 is linked with the worm gear 73 and the release gear 76; The trip block 77 is disposed on the trip gear 76. When the trip gear 76 rotates, the trip block 77 can push the leakage trip component 9 to rotate.

[0035] The present invention is further configured such that: the linkage gear set 75 includes a transmission gear 751, a T-shaped gear 752 and a central column gear 753, the transmission gear 751 is connected to the worm gear 73, and the T-shaped gear 752 is meshed with the transmission gear 751 and the central column gear 753 respectively. The central column gear 753 is engaged with the release gear 76.

[0036] The design of this structure allows for ample space inside the operating module after the circuit board 53 and the connecting board 54 are installed independently.

[0037] Therefore, additional functional structures can be added to the original space. For example, in the previous operating cavity, due to the presence of electronic components such as circuit board 53, there was only enough space for the installation of magnetic tripping mechanism 8. However, in this application, space can be arranged for motor tripping mechanism 7 in the original space.

[0038] The drive motor 71 is connected to the circuit board 53, and remote control is achieved through the remote control module on the circuit board 53.

[0039] like Figure 6 As shown, both the T-shaped gear 752 and the central column gear 753 are T-shaped. The linkage gear set 75 has a speed reduction function, that is, the drive motor 71 rotates several times, while the release gear 76 only rotates a quarter turn. It also includes the following operating steps: 1. When the drive motor 71 starts, the worm 72 drives the worm wheel 73 to rotate. 2. The worm gear 73 is connected to the transmission gear 751 (fixed connection), so the transmission gear 751 rotates accordingly; 3. The transmission gear 751 is meshed with the T-gear 752, so the T-gear 752 rotates accordingly; 4. The T-shaped gear 752 is meshed with the central column gear 753, so the central column gear 753 rotates accordingly; 5. The central column gear 753 is meshed with the release gear 76, so the release gear 76 rotates accordingly.

[0040] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A four-way miniature circuit breaker, characterized in that: It includes a first operation module (1), a second operation module (2), a third operation module (3), a fourth operation module (4) and an electronic module (5). The first operation module (1), the second operation module (2), the third operation module (3) and the fourth operation module (4) are connected in sequence. The electronic module (5) is detachably installed on the side of the first operation module (1) away from the second operation module (2). The first operation module (1) includes a circuit breaker bottom (11) and a circuit breaker cover (12) and an operation mechanism (13), wherein the operation mechanism (13) is disposed between the circuit breaker bottom (11) and the circuit breaker cover (12); The electronic module (5) includes an operating base (51) and an operating cover (52), a circuit board (53) and a connecting plate (54). The operating base (51) and the circuit breaker cover (12) together form an installation cavity. The operating base (51) is disposed in the installation cavity and divides the installation cavity into a circuit cavity and a connecting cavity. The circuit board (53) is installed in the circuit cavity and the connecting plate (54) is installed in the connecting cavity.

2. The four-way miniature circuit breaker according to claim 1, characterized in that: The electric control cover (52) is provided with a first through groove (521), and multiple sets of the first through groove (521) are provided.

3. A four-way miniature circuit breaker according to claim 1, characterized in that: The circuit breaker cover (12) has multiple sets of conductor grooves (121).

4. A four-way miniature circuit breaker according to claim 3, characterized in that: The circuit breaker cover (12) has a mounting part (122) protruding on the side facing the electric control cover (52). The mounting part (122) has an installation opening on the side facing the electric control cover (52). A cover plate (14) is detachably installed at the installation opening. The connecting plate (54) is detachably installed between the cover plate (14) and the mounting part (122).

5. A four-way miniature circuit breaker according to claim 4, characterized in that: The cover plate (14) is provided with multiple sets of second through slots (141), and the second through slots (141) are provided in a one-to-one correspondence with the first through slots (521); The connecting plate (54) is provided with multiple sets of wiring terminals (541), and the wiring terminals (541) extend into the circuit cavity through the first through groove (521).

6. A four-way miniature circuit breaker according to claim 1, characterized in that: The electric control base (51) is provided with multiple sets of guide parts (511), and the circuit board (53) is provided with multiple sets of guide ports (531).

7. A four-way miniature circuit breaker according to claim 6, characterized in that: The circuit board (53) is provided with multiple sets of positioning blocks (532), and the electric control cover (52) and the electric control bottom (51) are provided with positioning grooves (512) on both sides.

8. A four-way miniature circuit breaker according to any one of claims 1-7, characterized in that: The operating mechanism (13) includes a locking mechanism (6), a motor tripping mechanism (7), a magnetic tripping mechanism (8), a leakage current tripping component (9), and a handle mechanism (91). The motor tripping mechanism (7) and the magnetic tripping mechanism (8) are linked with the locking mechanism (6) through the leakage current tripping component (9). The handle mechanism (91) is linked to the locking mechanism (6).

9. A four-way miniature circuit breaker according to claim 8, characterized in that: The motor tripping mechanism (7) includes a drive motor (71), a worm (72), a worm wheel (73), a transmission shaft (74), a linkage gear set (75), a tripping gear (76), and a tripping block (77). The worm (72) is located at the output end of the drive motor (71). The worm gear (73) and the linkage gear set (75) are both mounted on the transmission shaft (74), and the worm gear (73) is meshed with the worm (72); The linkage gear set (75) is linked with the worm gear (73) and the release gear (76); The trip block (77) is disposed on the trip gear (76). When the trip gear (76) rotates, the trip block (77) can push the leakage trip component (9) to rotate.

10. A four-way miniature circuit breaker according to claim 9, characterized in that: The linkage gear set (75) includes a transmission gear (751), a T-shaped gear (752) and a central column gear (753). The transmission gear (751) is connected to the worm gear (73), and the T-shaped gear (752) is meshed with the transmission gear (751) and the central column gear (753) respectively. The central column gear (753) is meshed with the release gear (76).

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