Modularized molded case circuit breaker

Abstract

The utility model relates to the technical field of molded case circuit breakers, in particular to a modularized molded case circuit breaker, which comprises a guide rail mounting plate, a molded case circuit breaker main body is clamped on the guide rail mounting plate, a circuit breaker shell is clamped on the front side of the molded case circuit breaker main body, and two ends of the molded case circuit breaker main body are fixedly connected with U-shaped plates. According to the utility model, the two elastic sheet buckles are clamped and limited to the two U-shaped plates, and then the two movable convex rods with elasticity are clamped in the U-shaped seat, so that the circuit breaker shell can be assembled and fixed conveniently, and the circuit breaker shell can be assembled and fixed conveniently. In this way, the molded case circuit breaker can be assembled in a modularized mode in a clamping mode, time and labor are saved, the assembling stability is good, and the assembling efficiency of the modularized molded case circuit breaker is improved.

Description

Technical Field

[0001] This utility model relates to the field of molded case circuit breaker technology, specifically a modular molded case circuit breaker. Background Technology

[0002] Molded case circuit breakers (MCCBs) are protective electrical devices widely used in low-voltage power distribution systems. Their main function is to quickly and automatically disconnect the power supply when a circuit experiences overload, short circuit, or undervoltage faults, thereby preventing the fault from escalating and protecting the safety of the circuit and electrical equipment.

[0003] The prior art discloses patent application number "CN202223001546.8", which discloses a molded case circuit breaker with a modular controller. The circuit breaker includes a cover with a controller slot. A modular controller is installed in the controller slot. The modular controller includes a protective cover, a top cover, and a base. The top cover has a connecting hole 1 and a connecting hole 2 through it. The base has a corresponding connecting hole 1 and a connecting hole 2 through it. Therefore, a connecting post 1 and a connecting post 2 are installed in the controller slot. The connecting hole 1 and the connecting hole 2 are located diagonally opposite to the top cover. Bolts are installed between the connecting hole 1, the connecting hole 1, and the connecting post 1. Bolts are also installed between the connecting hole 2, the connecting hole 2, and the connecting post 2.

[0004] This molded case circuit breaker only enables the replacement of the controller. However, in actual use, the above-mentioned device usually uses screws to fix the molded case circuit breaker housing in order to assemble the entire molded case circuit breaker. This installation method makes it difficult to quickly install and remove the molded case circuit breaker, resulting in the inability to assemble the molded case circuit breaker in a modular manner. This affects the assembly efficiency of the molded case circuit breaker and makes it inconvenient to use. Utility Model Content

[0005] The purpose of this invention is to provide a modular molded case circuit breaker to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A modular molded case circuit breaker includes a guide rail mounting plate, on which a molded case circuit breaker body is snapped. A circuit breaker housing is snapped onto the front side of the molded case circuit breaker body. U-shaped plates are fixedly connected to both ends of the molded case circuit breaker body, and elastic clips are fixedly installed at both ends of the circuit breaker housing. One side of the elastic clip is snapped into the inside of the U-shaped plate.

[0008] Four telescopic blocks are slidably connected to one side of the main body of the molded case circuit breaker. Two U-shaped seats are fixed at both ends of the circuit breaker housing. Movable protrusions for fixing the circuit breaker housing are slidably connected to both ends of the four telescopic blocks. A first connecting spring is fixedly connected between the movable protrusions and the telescopic blocks. Two through transverse grooves are opened inside the guide rail mounting plate.

[0009] Preferably, both ends of the molded case circuit breaker body are slidably connected to limiting telescopic blocks for positioning the molded case circuit breaker body, and a third connecting spring is arrayed between the two limiting telescopic blocks and the molded case circuit breaker body.

[0010] Preferably, an array of connecting plates is fixedly connected to one side of the guide rail mounting plate, and a support slide plate for supporting the main body of the molded case circuit breaker is slidably connected to the lower side of the connecting plate. A second connecting spring is arrayed between the support slide plate and the connecting plate, and two U-shaped frames are fixedly connected to one side inside the main body of the molded case circuit breaker.

[0011] Preferably, one side of the guide rail mounting plate is rotatably connected to an array of double-headed limiting rotating plates, and both U-shaped frames have through grooves inside, with one side of the double-headed limiting rotating plates snapped into the U-shaped frame.

[0012] Preferably, one side of the movable protrusion passes through the U-shaped seat and extends to one side of the U-shaped seat, and one side of the telescopic block is engaged inside the U-shaped seat.

[0013] Preferably, one side of each of the four U-shaped seats is threaded with a fastening bolt for fixing the telescopic block, and one side of the fastening bolt passes through the U-shaped seat and extends into the interior of the telescopic block.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model uses two elastic plates to snap and limit the two U-shaped plates, and then uses two elastic movable protrusions to snap into the U-shaped seat to assemble and fix the circuit breaker housing. This snap-fit ​​method allows for modular assembly of molded case circuit breakers, saving time and effort, and improving the stability of the assembly and efficiency of modular molded case circuit breakers.

[0016] 2. This utility model utilizes elastic limiting telescopic blocks and supporting slide plates to position and support the molded case circuit breaker, preventing it from slipping off the guide rail mounting plate. Two double-headed limiting rotating plates then limit and press against two U-shaped frames to further position the molded case circuit breaker and enhance its stability during installation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a utility model Figure 1 Installation diagram of the main body and telescopic locking block of the molded case circuit breaker;

[0020] Figure 3 This is a utility model Figure 2 Enlarged view at point E in the middle;

[0021] Figure 4 This is a utility model Figure 1 A schematic diagram of the structure of the middle support slide and the second connecting spring;

[0022] Figure 5 This is a utility model Figure 4 Schematic diagram of the U-shaped frame and double-headed limiting rotating plate;

[0023] Figure 6 This is a utility model Figure 2 Installation diagram of the U-shaped plate and elastic clips;

[0024] The attached figures are labeled as follows:

[0025] 1. Guide rail mounting plate; 2. Molded case circuit breaker body; 3. Circuit breaker housing; 4. U-shaped plate; 5. Elastic sheet clip; 6. Telescopic block; 7. U-shaped seat; 8. Fastening bolt; 9. Movable protruding rod; 10. First connecting spring; 11. Transverse groove; 12. Connecting plate; 13. Support slide plate; 14. Second connecting spring; 15. Limiting telescopic block; 16. Third connecting spring; 17. U-shaped frame; 18. Groove; 19. Double-headed limiting rotating plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figures 1 to 6As shown, a modular molded case circuit breaker includes a guide rail mounting plate 1, a molded case circuit breaker body 2 is snapped onto the guide rail mounting plate 1, a circuit breaker housing 3 is snapped onto the front side of the molded case circuit breaker body 2, U-shaped plates 4 are fixedly connected to both ends of the molded case circuit breaker body 2, and elastic clips 5 are fixedly installed on both ends of the circuit breaker housing 3, with one side of the elastic clip 5 snapped into the inside of the U-shaped plate 4;

[0028] Four telescopic blocks 6 are slidably connected to one side of the interior of the molded case circuit breaker body 2. Two U-shaped seats 7 are fixed at both ends of the circuit breaker housing 3. With the setting of elastic plate buckles 5, the elastic plate buckles 5 can be disengaged from the U-shaped seats 7 by squeezing the elastic plate buckles 5, so as to move the circuit breaker housing 3 and disassemble the circuit breaker housing 3. It is convenient to use. The two ends of the four telescopic blocks 6 are slidably connected to movable protrusions 9 for fixing the circuit breaker housing 3. A first connecting spring 10 is fixedly connected between the movable protrusions 9 and the telescopic blocks 6. By squeezing the two movable protrusions 9 at the same time, the movable protrusions 9 can be retracted, so as to move the telescopic blocks 6 and release the limitation of the telescopic blocks 6 for disassembling the circuit breaker housing 3. The interior of the guide rail mounting plate 1 has two through transverse grooves 11. The guide rail mounting plate 1 can be fixed in the installation position by screws and transverse grooves 11, so as to fix the molded case circuit breaker.

[0029] Both ends of the molded case circuit breaker body 2 are slidably connected to limiting telescopic blocks 15 for positioning the molded case circuit breaker body 2, and a third connecting spring 16 is arrayed between the two limiting telescopic blocks 15 and the molded case circuit breaker body 2.

[0030] One side of the guide rail mounting plate 1 is fixedly connected to an array of connecting plates 12. The lower side of the connecting plate 12 is slidably connected to a support slide plate 13 for supporting the molded case circuit breaker body 2. The support slide plate 13 and the connecting plate 12 are connected in an array of second connecting springs 14. Two U-shaped frames 17 are fixedly connected to one side inside the molded case circuit breaker body 2.

[0031] One side of the guide rail mounting plate 1 is rotatably connected to an array of double-headed limiting rotating plates 19. Both U-shaped frames 17 have through grooves 18 inside. One side of the double-headed limiting rotating plate 19 is snapped into the U-shaped frame 17. By rotating the double-headed limiting rotating plate 19, the double-headed limiting rotating plate 19 is kept vertically upward so that the double-headed limiting rotating plate 19 can release the limiting effect on the U-shaped frame 17.

[0032] One side of the movable protruding rod 9 passes through the U-shaped seat 7 and extends to one side of the U-shaped seat 7, and one side of the telescopic locking block 6 is locked inside the U-shaped seat 7.

[0033] Each of the four U-shaped seats 7 has a threaded fastening bolt 8 on one side for fixing the telescopic block 6. One side of the fastening bolt 8 passes through the U-shaped seat 7 and extends into the interior of the telescopic block 6.

[0034] The working principle of the modular molded case circuit breaker provided by this utility model is as follows:

[0035] By pressing the two elastic clips 5 on the circuit breaker housing 3, the circuit breaker housing 3 is snapped onto the molded case circuit breaker body 2. At this time, the two elastic clips 5 can be inserted into the interior of the two U-shaped plates 4. Then, the two elastic clips 5 are released, so that the two elastic clips 5 can be snapped and limited to the two U-shaped plates 4 for the initial assembly of the circuit breaker housing 3. Next, the two movable protrusions 9 of the first connecting spring 10 installed at the telescopic block 6 are compressed, so that the two movable protrusions 9 are stored inside the telescopic block 6. Then, the telescopic block 6 is moved so that the telescopic block 6 enters the interior of the U-shaped seat 7. Then, the elastic force of the first connecting spring 10 can make the two movable protrusions 9 automatically extend so that the two movable protrusions 9 are snapped and fixed in the U-shaped seat 7 for fixing the circuit breaker housing 3. In this snap-fit ​​method, the molded case circuit breaker can be assembled modularly, which saves time and effort, has good stability during assembly, and improves the assembly efficiency of the modular molded case circuit breaker.

[0036] By using two limiting telescopic blocks 15 equipped with a third connecting spring 16, the main body 2 of the molded case circuit breaker can be snapped and positioned onto the guide rail mounting plate 1. At this time, the two limiting telescopic blocks 15 can securely lock the molded case circuit breaker. Then, the support slide plate 13 equipped with a second connecting spring 14 can elastically support the molded case circuit breaker to prevent it from slipping off the guide rail mounting plate 1. As the molded case circuit breaker is installed, the double-headed limiting rotating plate 19 will also be inserted into the groove 18 of the U-shaped frame 17. Then, the two double-headed limiting rotating plates 19 will be rotated in sequence to limit and press against the two U-shaped frames 17 to further position the molded case circuit breaker and enhance its stability during installation.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A modular molded case circuit breaker, comprising a guide rail mounting plate (1), characterized in that: The guide rail mounting plate (1) is fitted with a molded case circuit breaker body (2), the front side of the molded case circuit breaker body (2) is fitted with a circuit breaker housing (3), both ends of the molded case circuit breaker body (2) are fixedly connected with U-shaped plates (4), both ends of the circuit breaker housing (3) are fixedly installed with elastic clips (5), and one side of the elastic clips (5) is fitted inside the U-shaped plate (4). Four telescopic blocks (6) are slidably connected to one side of the body (2) of the plastic case circuit breaker. Two U-shaped seats (7) are fixedly provided at both ends of the circuit breaker housing (3). Movable protrusions (9) for fixing the circuit breaker housing (3) are slidably connected at both ends of the four telescopic blocks (6). A first connecting spring (10) is fixedly connected between the movable protrusions (9) and the telescopic blocks (6). Two through transverse grooves (11) are opened inside the guide rail mounting plate (1).

2. A modular molded case circuit breaker according to claim 1, characterized in that, Both ends of the molded case circuit breaker body (2) are slidably connected to limiting telescopic blocks (15) for positioning the molded case circuit breaker body (2), and a third connecting spring (16) is arrayed between the two limiting telescopic blocks (15) and the molded case circuit breaker body (2).

3. A modular molded case circuit breaker according to claim 1, characterized in that, One side of the guide rail mounting plate (1) is fixedly connected to an array of connecting plates (12), and the lower side of the connecting plate (12) is slidably connected to a support slide plate (13) for supporting the molded case circuit breaker body (2). The support slide plate (13) and the connecting plate (12) are connected in an array of second connecting springs (14), and two U-shaped frames (17) are fixedly connected to one side inside the molded case circuit breaker body (2).

4. A modular molded case circuit breaker according to claim 3, characterized in that, One side of the guide rail mounting plate (1) is rotatably connected to an array of double-headed limiting rotating plates (19). The interior of the two U-shaped frames (17) is provided with through grooves (18). One side of the double-headed limiting rotating plate (19) is snapped into the U-shaped frame (17).

5. A modular molded case circuit breaker according to claim 1, characterized in that, One side of the movable protrusion (9) passes through the U-shaped seat (7) and extends to one side of the U-shaped seat (7), and one side of the telescopic block (6) is engaged inside the U-shaped seat (7).

6. A modular molded case circuit breaker according to claim 1, characterized in that, Each of the four U-shaped seats (7) has a threaded fastening bolt (8) for fixing the telescopic block (6) on one side. One side of the fastening bolt (8) passes through the U-shaped seat (7) and extends into the interior of the telescopic block (6).

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