A low arc plastic housing circuit breaker

Abstract

The utility model relates to circuit breaker technical field especially, relates to a low arc plastic shell formula circuit breaker, solved the circuit breaker inconvenient installation and use on the electric appliance in prior art and the problem that the plastic shell is easy to damage in the dismounting process and leads to the unsafe use of circuit breaker. A low arc plastic shell formula circuit breaker, including the body, the surface of body is equipped with several insertion holes, one side of body is fixedly connected with three partition plates, the bottom of body is fixedly connected with bottom block, the inboard of bottom block and partition plate is fixedly connected, the bottom of bottom block is equipped with mounting block, the top of mounting block is equipped with several screw holes, the bottom of mounting block is equipped with mounting mechanism, the inside rotation is connected with screw rod in insertion hole, one end of screw rod is connected with adjacent screw hole threadedly. The utility model guarantees that the circuit breaker body is conveniently fixed on the electric appliance, and can also be safely used.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a low-arc plastic-cased circuit breaker. Background Technology

[0002] A circuit breaker is a switching device used to distribute electrical energy and protect power lines and motors. It can close, carry, and interrupt current under normal circuit conditions, and can close, carry, and interrupt current under abnormal circuit conditions within a specified time. It achieves circuit connection and isolation through the contact and separation of moving and stationary contacts. In industrial automated production lines, it is used to protect motors, transformers, and control circuits; in industries such as chemical, steel, and petroleum, it is used to prevent equipment overload and short circuit.

[0003] Chinese Patent Publication No. CN221885019U discloses a plastic-cased circuit breaker, relating to the field of circuit breaker technology. It includes a circuit breaker body and a pressing mechanism. The outer wall of the circuit breaker body has multiple slots, and the pressing mechanism is disposed inside the slots. The pressing mechanism includes a pressing plate slidably disposed inside the slots, with limit blocks fixedly connected to both sides of the pressing plate. Limit grooves are also formed on both sides of the inner wall of the slots. This utility model uses a moving mechanism to move the pressing plate within the slots until the metal portion of the wire is pressed between the pressing plate and the metal connecting piece. During the movement of the pressing plate, the limiting grooves and limit blocks counteract the lateral force from the moving mechanism, preventing the pressing plate from rotating within the slots and allowing only translational movement. This prevents the metal end of the wire from shifting due to lateral forces, thereby improving the stability of the connection between the external wire and the circuit breaker body.

[0004] For existing low-arc plastic-cased circuit breakers, during use, the circuit breaker cannot be easily fixed to different electrical appliances, making it prone to unstable shaking and displacement on the electrical appliances. Furthermore, during disassembly or installation, large forces can be applied directly to the plastic casing of the circuit breaker, causing damage and making the circuit breaker unsafe. Utility Model Content

[0005] The purpose of this invention is to provide a low-arc plastic-cased circuit breaker, which solves the problems of existing circuit breakers being inconvenient to install and use on electrical appliances and the plastic casing being easily damaged during disassembly and assembly, leading to unsafe use of the circuit breaker.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A low-arc plastic-cased circuit breaker includes a body with several insertion holes on its surface. Three partition plates are fixedly connected to one side of the body, and a base block is fixedly connected to the bottom of the body. The base block is fixedly connected to the inner side of the partition plates. A mounting block is provided at the bottom of the base block. Several screw holes are provided at the top of the mounting block, and a mounting mechanism is provided at the bottom of the mounting block. A screw is rotatably connected inside the insertion holes, and one end of the screw is threadedly connected to an adjacent screw hole.

[0008] Preferably, the mounting mechanism includes a limiting groove formed at the bottom of the mounting block, and a U-shaped fixing plate passes through the inside of the limiting groove.

[0009] Preferably, a slot is provided on one side of the limiting groove, a limiting block is provided inside the slot, and an anti-detachment block is fixedly connected to one side of the limiting block.

[0010] Preferably, the surface of the fixing plate is provided with several fixing grooves, and anti-detachment rods are fixedly connected to both sides of the fixing plate. The anti-detachment rods are located between the anti-detachment block and the top of the limiting groove. Two auxiliary blocks are fixedly connected to the side of the limiting groove away from the card slot, and another anti-detachment rod is located between the auxiliary block and the top of the limiting groove.

[0011] Preferably, two card blocks of different heights are fixedly connected to both sides of the card slot, and four receiving slots are opened on the top of the limiting block. Two hard blocks are fixedly connected inside the two receiving slots, and two soft blocks are fixedly connected inside the other two receiving slots. The hard block and soft block on the same side are located between the two card blocks.

[0012] Preferably, the top of the mounting block has two through slots.

[0013] This utility model has the following beneficial effects:

[0014] When using a circuit breaker, the mounting block can be fixedly connected to the main body using screws. Then, the mounting block is fixedly connected to the electrical appliance using the fixing plate at the bottom of the mounting block. This intermediate structure ensures that the circuit breaker body and the electrical appliance are fixed together, preventing the circuit breaker body's casing from being damaged by excessive force during installation. Furthermore, the fixing plate has several fixing slots, allowing it to adapt to different installation structures on the electrical appliance. In some cases, the fixing plate can even be damaged to facilitate fixing to the electrical appliance without damaging the circuit breaker body's casing, ensuring safe use. This ensures that the circuit breaker body can be easily fixed to the electrical appliance while maintaining safe operation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A side view;

[0018] Figure 3 for Figure 2 A schematic diagram showing the midsole block and mounting block after separation;

[0019] Figure 4 for Figure 1 A schematic diagram of the mounting mechanism after it has been flipped over;

[0020] Figure 5 for Figure 4 A side view of the limiting block after the middle fixing plate is removed.

[0021] In the diagram: 1. Body; 2. Insertion hole; 3. Partition plate; 4. Base block; 5. Mounting block; 6. Screw hole; 7. Screw; 8. Mounting mechanism; 9. Through groove; 801. Restriction groove; 802. Fixing plate; 803. Card slot; 804. Restriction block; 805. Anti-detachment block; 806. Fixing groove; 807. Anti-detachment rod; 808. Card block; 809. Receiving groove; 810. Hard block; 811. Soft block; 812. Auxiliary block. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] Reference Figures 1-5A low-arc plastic-cased circuit breaker includes a body 1, which is the main body of the circuit breaker. The surface of the body 1 has several insertion holes 2, which facilitate the insertion of screws 7 to secure the body 1 to an electrical appliance. Three partition plates 3 are fixedly connected to one side of the body 1. The partition plates 3 prevent the arc gas generated during closure from being transmitted to the wiring connecting adjacent circuit breaker bodies 1. A base block 4 is fixedly connected to the bottom of the body 1. During use, the base block 4 facilitates the separation of the internal components and electrical appliances of the body 1 to a certain extent, providing protection and support for the body 1. The base block 4 is fixedly connected to the inner side of the partition plates 3, which better protect the body 1 and the base block 4, allowing the body 1 to operate normally. The bottom of the base block 4 is provided with a mounting block 5, which is fixed to the base block 4 by a screw 7. The top of the mounting block 5 is provided with several screw holes 6, which allow the screw 7 to easily enter and fix the mounting block 5 to the bottom of the base block 4. The bottom of the mounting block 5 is provided with a mounting mechanism 8, which fixes the mounting block 5 to the electrical appliance. The main body 1 can be easily fixed to the electrical appliance through the mounting block 5 and the mounting mechanism 8. The screw 7 is rotatably connected inside the insertion hole 2. One end of the screw 7 is threaded to the adjacent screw hole 6. The screw 7 enters the screw hole 6 through the insertion hole 2, which can easily fix the mounting block 5 to the main body 1 and the base block 4, making it convenient to fix the main body 1 to the electrical appliance later, thus facilitating the fixation and use of the main body 1.

[0024] Furthermore, the installation mechanism 8 includes a limiting groove 801 formed at the bottom of the mounting block 5. A U-shaped fixing plate 802 passes through the inside of the limiting groove 801. When it is necessary to fix the mounting block 5 to the electrical appliance through the installation mechanism 8, the fixing plate 802 can be used to easily fix the mounting block 5 to the electrical appliance. The limiting groove 801 holds the fixing plate 802 in the groove for fixing the mounting block 5, so that the fixing plate 802 is first fixed to the bottom of the mounting block 5, and then the mounting block 5 and the electrical appliance are fixed with bolts or other fasteners, thereby fixing the main body 1 to the electrical appliance for effective and safe use.

[0025] Furthermore, a slot 803 is provided on one side of the limiting groove 801, and a limiting block 804 is provided inside the slot 803. An anti-detachment block 805 is fixedly connected to one side of the limiting block 804. Before the fixing plate 802 needs to be placed into the limiting groove 801, the limiting block 804 needs to be sent into the slot 803 first. During this process, the anti-detachment block 805 can enter the limiting groove 801, so that the fixing plate 802 can be easily restricted in the limiting groove 801 by the anti-detachment block 805 on the limiting block 804. This makes it easy for the fixing plate 802 to fix the body 1 to the electrical appliance and ensure the normal use of the body 1.

[0026] Furthermore, the surface of the fixing plate 802 is provided with several fixing grooves 806. Anti-detachment rods 807 are fixedly connected to both sides of the fixing plate 802. The anti-detachment rods 807 are located between the anti-detachment block 805 and the top of the limiting groove 801. Two auxiliary blocks 812 are fixedly connected to the side of the limiting groove 801 away from the slot 803. Another anti-detachment rod 807 is located between the auxiliary block 812 and the top of the limiting groove 801. When the fixing plate 802 slides into the limiting groove 801 from the side, the anti-detachment rods 807 on both sides of the fixing plate 802 will enter the limiting groove 801 together. One of the anti-detachment rods 807 is limited by the anti-detachment block 805 on the protruding limiting block 804 in the middle of the limiting groove 801, and the other anti-detachment rod 807 is limited by the two auxiliary blocks 812. Thus, when the fixing plate 802 is fixed to the electrical appliance, the mounting block 5 and the main body 1 will be fixed to the electrical appliance together, so that the main body 1 can be easily fixed to the electrical appliance for safe use.

[0027] Furthermore, two locking blocks 808 of different heights are fixedly connected to both sides of the slot 803. The top of the limiting block 804 has four receiving slots 809. Two hard blocks 810 are fixedly connected inside two receiving slots 809, and two soft blocks 811 are fixedly connected inside the other two receiving slots 809. The hard block 810 and soft block 811 on the same side are located between the two locking blocks 808. When the limiting block 804 needs to be placed into the slot 803, it can be directly inserted into the slot 803 from the side. During this process, the hard block 810 needs to be moved from the side of the higher locking block 808 to... The lower locking block 808 blocks the hard block 810. During movement, the soft block 811 is blocked by the higher locking block 808. At this time, a large force needs to be applied to deform the soft block 811, so that the soft block 811 enters between the two locking blocks 808. The soft block 811 is made of elastic material. The hard block 810 fits with the lower locking block 808, and the soft block 811 fits with the higher locking block 808, so that the limiting block 804 can be fixed inside the slot 803, ensuring that the anti-detachment block 805 on the limiting block 804 can better limit the anti-detachment rod 807.

[0028] Furthermore, two through slots 9 are provided on the top of the mounting block 5, which allows the mounting block 5 to save materials without affecting its strength.

[0029] In summary:

[0030] When the main body 1 is needed, it can be easily fixed to the electrical appliance. In this process, the limiting block 804 needs to be placed into the slot 803 first. When the limiting block 804 moves from the side into the slot 803, the hard block 810 inside the receiving slot 809 can easily fit with the lower slot block 808. Then, through the deformation of the soft block 811, it passes through the higher slot block 808 and fits with the higher slot block 808, so that the hard block 810 and the soft block 811 are both located between the two slot blocks 808, restricting the limiting block 804 inside the slot 803. Then, the fixing plate 802 is moved from the side into the limiting slot 801. In this process, the anti-detachment rods 807 on both sides of the fixing plate 802 are blocked by the auxiliary block 812 on the limiting slot 801 and the anti-detachment block 805 on the limiting block 804, respectively, so that the fixing plate 802 cannot easily detach from the limiting slot 801. Then, by moving the fixing plate 802 into the limiting slot 801, the fixing plate 802 can be easily fixed into the limiting slot 801. The fixing slot 806 on plate 2 is used to nail a fixing member to fix the fixing plate 802 to the electrical appliance. The protruding part of the fixing member blocks the side of the mounting block 5, preventing the mounting block 5 from sliding off the fixing plate 802. Then, the screw 7 is inserted into the insertion hole 2. The screw 7 passes through the bottom block 4 and enters the screw hole 6. By rotating the screw 7, the screw 7 is threaded into the screw hole 6, thereby fixing the body 1, the bottom block 4 and the mounting block 5. The body 1 is fixed to the electrical appliance by the mounting block 5 for convenient use. The partition plate 3 can prevent the arc gas generated when closed from being transmitted to the circuit connecting the adjacent body 1, ensuring the safety of the body 1. Through the above structure, the safety of the body 1 can be conveniently guaranteed when using the body 1, and the body 1 can be conveniently fixed to the electrical appliance by the mounting block 5 and the fixing plate 802, which facilitates the fixation and safe use of the body 1.

[0031] 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 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. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A low-arc plastic-cased circuit breaker, comprising a body (1), characterized in that, The surface of the main body (1) is provided with several insertion holes (2). Three partition plates (3) are fixedly connected to one side of the main body (1). A bottom block (4) is fixedly connected to the bottom of the main body (1). The bottom block (4) is fixedly connected to the inner side of the partition plate (3). A mounting block (5) is provided at the bottom of the bottom block (4). Several screw holes (6) are provided at the top of the mounting block (5). An installation mechanism (8) is provided at the bottom of the mounting block (5). A screw (7) is rotatably connected inside the insertion hole (2). One end of the screw (7) is threadedly connected to the adjacent screw hole (6).

2. The low-arc plastic-cased circuit breaker according to claim 1, characterized in that, The mounting mechanism (8) includes a limiting groove (801) opened at the bottom of the mounting block (5), and a U-shaped fixing plate (802) is inserted inside the limiting groove (801).

3. A low-arc plastic-cased circuit breaker according to claim 2, characterized in that, A slot (803) is provided on one side of the limiting groove (801), and a limiting block (804) is provided inside the slot (803). An anti-detachment block (805) is fixedly connected to one side of the limiting block (804).

4. A low-arc plastic-cased circuit breaker according to claim 3, characterized in that, The surface of the fixing plate (802) is provided with a plurality of fixing grooves (806). Anti-detachment rods (807) are fixedly connected to both sides of the fixing plate (802). One of the anti-detachment rods (807) is located between the anti-detachment block (805) and the top of the limiting groove (801). Two auxiliary blocks (812) are fixedly connected to the side of the limiting groove (801) away from the slot (803). The other anti-detachment rod (807) is located between the auxiliary block (812) and the top of the limiting groove (801).

5. A low-arc plastic-cased circuit breaker according to claim 3, characterized in that, Two card blocks (808) of different heights are fixedly connected to both sides of the card slot (803). The top of the limiting block (804) is provided with four receiving slots (809). Two of the receiving slots (809) are fixedly connected to two hard blocks (810), and the other two receiving slots (809) are fixedly connected to two soft blocks (811). The hard block (810) and the soft block (811) on the same side are located between the two card blocks (808).

6. A low-arc plastic-cased circuit breaker according to claim 1, characterized in that, The top of the mounting block (5) has two through slots (9).

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