Miniature circuit breaker

Abstract

The utility model is applicable to the technical field of miniature circuit breakers, and provides a miniature circuit breaker, which comprises a mounting plate, a circuit breaker body is arranged at the upper end of the mounting plate, and a connecting plate is detachably and fixedly connected to the bottom of the circuit breaker body; a fixing assembly is arranged on the mounting plate; a plurality of positioning columns are fixedly connected to the bottom of the connecting plate, positioning grooves corresponding to the positioning columns are formed in the upper end of the mounting plate, the positioning columns are connected with the positioning grooves in an inserted mode, through the arrangement of the fixing assembly, the circuit breaker body can be conveniently supported after being mounted, the stability is improved, and the service life of the circuit breaker body is prolonged. By arranging the positioning columns and the positioning grooves, mounting is facilitated, by arranging the first magnetic blocks and the second magnetic blocks, fixing is facilitated, and the device is convenient to mount, easy to operate and stable in supporting.

Description

Technical Field

[0001] The utility model belongs to the technical field of miniature circuit breakers, and in particular relates to a miniature circuit breaker. Background Art

[0002] Miniature circuit breakers are also called small circuit breakers, which are composed of operating mechanisms, contacts, protection devices, arc extinguishing systems, etc. The main contacts are closed manually or electrically. They are the most widely used terminal protection devices in building electrical terminal distribution devices, and are often used for low-current single-phase and three-phase short circuit, overload, overvoltage and other protection.

[0003] The utility model with the reference application number CN202221335454.0 discloses a small circuit breaker, including a distribution box and a circuit breaker assembly, a mounting plate is arranged at the bottom of the distribution box, a docking rod and a locking rod are arranged at the bottom of the circuit breaker assembly, a docking groove and a locking groove corresponding to the docking rod and the locking rod are opened on the mounting plate, and the docking groove and the locking groove are provided in multiple groups, the locking groove is clamped with the locking rod through a latch tongue, and an unlocking mechanism is arranged on one side of the latch tongue; the utility model is installed by plugging the docking rod and the locking rod at the bottom of the circuit breaker assembly with the docking groove and the locking groove on the mounting plate, and the circuit breaker assembly is installed in different positions as needed to meet different installation requirements, when the docking rod is plugged with the locking groove, the latch tongue on the locking groove is clamped with the docking rod to complete quick docking, the installation is convenient, and the latch tongue is controlled to be unlocked by the unlocking mechanism, which is convenient for quick unlocking.

[0004] The above prior art also has the following disadvantages:

[0005] The prior art latch is installed in the locking groove only by relying on the elasticity of the supporting spring, which has poor stability. The latch is easily deflected after the circuit breaker is used multiple times, affecting the smoothness and stability of the coordinated installation of the circuit breaker and the distribution box. Utility Model Content

[0006] The utility model provides a miniature circuit breaker, aiming to solve the problem that the prior art latch tongue is only installed in a locking groove by relying on the elasticity of a supporting spring, the stability is poor, and the latch tongue is easily deflected after the circuit breaker is used for multiple clamping, thus affecting the smoothness and stability of the coordinated installation of the circuit breaker and the distribution box.

[0007] The utility model is implemented as follows: a miniature circuit breaker comprises: a mounting plate, a circuit breaker body is arranged on the upper end of the mounting plate, a connecting plate is detachably and fixedly connected to the bottom of the circuit breaker body; a fixing assembly is arranged on the mounting plate; a plurality of positioning posts are fixedly connected to the bottom of the connecting plate, a positioning groove corresponding to the plurality of positioning posts is opened on the upper end of the mounting plate, and the plurality of positioning posts are respectively plugged into the plurality of positioning grooves.

[0008] Preferably, the bottoms of several of the positioning columns are respectively fixedly connected with first magnetic blocks, and the insides of several of the positioning grooves are respectively fixedly connected with second magnetic blocks; several of the first magnetic blocks are respectively adsorbed with several of the second magnetic blocks; a groove is opened in the middle of the upper end of the mounting plate, and a pressure sensor is installed inside the groove.

[0009] Preferably, a controller is installed on the upper end of the mounting plate, and the controller is electrically connected to the pressure sensor.

[0010] Preferably, mounting grooves are respectively provided on both sides of the upper end of the mounting plate, and miniature bidirectional screw slides are respectively installed inside the two mounting grooves.

[0011] Preferably, two of the four sliders of the two micro-bidirectional screw slides distributed on the left and right are fixedly connected to the same support plate, and the two micro-bidirectional screw slides are both electrically connected to the controller.

[0012] Preferably, rubber pads are fixedly connected to the sides of the two support plates that are close to each other, and a plurality of heat dissipation holes that are interconnected are respectively opened on the two rubber pads and the two support plates.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] By setting a fixing component, it is convenient to support the circuit breaker body after installation to improve stability. By setting a positioning column and a positioning groove, it is convenient to install. By setting a first magnetic block and a second magnetic block, it is convenient to fix. The device is easy to install, simple to operate, and has stable support. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural diagram of the utility model;

[0016] Figure 2 This utility model Figure 1 The enlarged structural diagram at A in the middle;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model from top view;

[0018] Figure 4 This utility model Figure 3 The enlarged structural diagram at B in the middle;

[0019] In the figure: 1. mounting plate; 2. circuit breaker body; 3. connecting plate; 4. groove; 5. pressure sensor; 6. controller; 7. positioning groove; 8. positioning column; 9. first magnetic block; 10. second magnetic block; 11. mounting groove; 12. micro bidirectional screw slide; 13. support plate; 14. rubber pad; 15. heat dissipation hole. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model provides a miniature circuit breaker, such as Figure 1-4 As shown, it includes: a mounting plate 1, a circuit breaker body 2 is arranged on the upper end of the mounting plate 1, and a connecting plate 3 is detachably fixedly connected to the bottom of the circuit breaker body 2; a fixing component is arranged on the mounting plate 1; a plurality of positioning columns 8 are fixedly connected to the bottom of the connecting plate 3, and a positioning groove 7 corresponding to the plurality of positioning columns 8 is opened on the upper end of the mounting plate 1, and the plurality of positioning columns 8 are respectively plugged into the plurality of positioning grooves 7.

[0023] It should be noted that, since the tongue in the prior art is only installed in the locking groove by relying on the elasticity of the supporting spring, the stability is poor. The tongue is prone to deflection after the circuit breaker is used multiple times, affecting the smoothness and stability of the coordinated installation of the circuit breaker and the distribution box. The present solution provides a fixing component to facilitate the support of the circuit breaker body 2 after installation to improve stability. The positioning column 8 and the positioning groove 7 are provided to facilitate installation. The first magnetic block 9 and the second magnetic block 10 are provided to facilitate fixing. The present device is easy to install, simple to operate, and has stable support.

[0024] In a further preferred embodiment of the present invention, Figure 1-2As shown, the bottoms of several positioning columns 8 are respectively fixedly connected with first magnetic blocks 9, and the insides of several positioning grooves 7 are respectively fixedly connected with second magnetic blocks 10; several first magnetic blocks 9 are respectively adsorbed with several second magnetic blocks 10; a groove 4 is opened in the middle of the upper end of the mounting plate 1, and a pressure sensor 5 of model LLBLS-I is installed inside the groove 4.

[0025] In this embodiment, automatic fixing is facilitated.

[0026] In a further preferred embodiment of the present invention, Figure 1-3 As shown, a controller 6 of model S7-300 is installed on the upper end of the mounting plate 1 , and the controller 6 and the pressure sensor 5 are electrically connected.

[0027] It should be noted that the model specification LLBLS-I of the pressure sensor 5 and the model specification S7-300 of the controller 6 are not the only limitations, but are selected and determined based on the actual specifications of the device. The specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0028] The power supply and principle of the pressure sensor 5 and the controller 6 are clear to those skilled in the art and will not be described in detail here.

[0029] In this embodiment, when the circuit breaker body 2 is installed, a signal is transmitted to the controller 6, and the controller 6 controls the micro bidirectional screw slide 12 to start.

[0030] In a further preferred embodiment of the present invention, Figure 1-3 As shown, mounting grooves 11 are respectively provided on both sides of the upper end of the mounting plate 1 , and miniature bidirectional screw slides 12 are respectively installed inside the two mounting grooves 11 .

[0031] In this embodiment, by installing a micro bidirectional screw slide 12, it is convenient to drive the two support plates 13 closer to or farther away from each other. A limit rod is provided on the micro bidirectional screw slide 12. The limit rod guides the movement of the two sliders of the micro bidirectional screw slide 12 to make it more stable.

[0032] In a further preferred embodiment of the present invention, Figure 1-4 As shown, the four sliders of the two micro bidirectional screw slides 12 are fixedly connected to the same support plate 13 between two sliders distributed on the left and right, and the two micro bidirectional screw slides 12 are electrically connected to the controller 6.

[0033] In this embodiment, it is convenient to support the circuit breaker body 2 and improve stability.

[0034] In a further preferred embodiment of the present invention, Figure 1-4As shown, rubber pads 14 are fixedly connected to the sides of the two support plates 13 that are close to each other, and a plurality of heat dissipation holes 15 that are interconnected are respectively formed on the two rubber pads 14 and the two support plates 13 .

[0035] In this embodiment, heat dissipation is facilitated.

[0036] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0037] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0038] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0039] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A miniature circuit breaker, characterized in that: include: A mounting plate (1), wherein a circuit breaker body (2) is disposed at the upper end of the mounting plate (1), and a connecting plate (3) is detachably and fixedly connected to the bottom of the circuit breaker body (2); The mounting plate (1) is provided with a fixing component; A plurality of positioning columns (8) are fixedly connected to the bottom of the connecting plate (3), and a positioning groove (7) corresponding to the plurality of positioning columns (8) is provided at the upper end of the mounting plate (1), and the plurality of positioning columns (8) are respectively plugged into the plurality of positioning grooves (7).

2. A miniature circuit breaker according to claim 1, characterized in that: The bottoms of the plurality of positioning posts (8) are respectively fixedly connected with first magnetic blocks (9), and the interiors of the plurality of positioning grooves (7) are respectively fixedly connected with second magnetic blocks (10); A plurality of the first magnetic blocks (9) are respectively attracted to a plurality of the second magnetic blocks (10); A groove (4) is provided in the middle of the upper end of the mounting plate (1), and a pressure sensor (5) is installed inside the groove (4).

3. A miniature circuit breaker according to claim 2, characterized in that: A controller (6) is installed on the upper end of the mounting plate (1), and the controller (6) is electrically connected to the pressure sensor (5).

4. A miniature circuit breaker according to claim 3, characterized in that: Mounting grooves (11) are respectively provided on both sides of the upper end of the mounting plate (1), and miniature bidirectional screw slides (12) are respectively installed inside the two mounting grooves (11).

5. A miniature circuit breaker according to claim 4, characterized in that: The four sliders of the two micro-bidirectional screw slides (12) are fixedly connected to the same support plate (13) between two sliders distributed on the left and right, and the two micro-bidirectional screw slides (12) are electrically connected to the controller (6).

6. A miniature circuit breaker according to claim 5, characterized in that: A rubber pad (14) is fixedly connected to each other on one side of the two support plates (13) close to each other, and a plurality of heat dissipation holes (15) communicating with each other are respectively provided on the two rubber pads (14) and the two support plates (13).

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