Circuit breaker protection switch box assembly

Abstract

The utility model discloses a circuit breaker protection switch box assembly, comprising a cover door and a fixed seat, the fixed seat is installed on a circuit breaker installation surface, and the cover door can rotate relative to the fixed seat; a boss is arranged in the middle of the fixed seat; one end of the cover door is provided with a rotating shaft rotationally connected with the fixing base, and a protrusion is arranged on the side, away from the cover door, of the rotating shaft and can be clamped by the boss during rotation. The corresponding rotating shaft is arranged on the cover door, the protrusion is arranged on the rotating shaft, and then the boss corresponding to the protrusion is arranged on the fixing base, so that when the cover door rotates, the protrusion is just clamped by the boss, the limited opening and closing angle is achieved through the design, the interference problem of peripheral electrical equipment is greatly avoided, and the safety of the electric appliance is improved. The situation that when large-angle opening is conducted, protruding electric parts on the peripheral surface are touched, so that the electric parts are damaged, and surface paint is collided is avoided, and the structure can be suitable for compact power source front panel electric appliance layout design.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker protection switch box assembly. Background Art

[0002] A circuit breaker is a switch that automatically disconnects when the current in a circuit exceeds the rated current. It is a crucial electrical component in electromechanical equipment. Conventional circuit breakers are typically installed inside a cabinet or distribution box, requiring the cabinet door or cover to be opened for control or activation. Alternatively, they are installed protruding from the front panel of the equipment, protected by hollow sheet metal structures around the perimeter, and exposed to the outside world. In terms of structural installation, circuit breakers can be installed with either an upper or lower switch or a left or right switch. Currently, there is no unified protection measure for circuit breaker switches in these different installation styles.

[0003] Conventional circuit breakers are placed directly inside the equipment cabinet door. When opening, the cabinet door or box cover needs to be opened as a whole, which is inconvenient to open and close the circuit breaker. Those directly installed on the front panel of the equipment are only protected by sheet metal hollow structural parts. For equipment with high protection requirements or power supply equipment with high electromagnetic compatibility requirements, this form of direct connection to the internal structure of the equipment greatly reduces the electromagnetic compatibility of the equipment. In addition, it becomes very necessary to design a universal circuit breaker protection switch box for different structural installation forms of circuit breakers. Utility Model Content

[0004] The technical problem to be solved by the present invention is: how to provide a highly versatile circuit breaker protection switch box assembly for electromechanical products and equipment with high requirements on protection performance and electromagnetic compatibility performance.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A circuit breaker protection switch box assembly comprises a cover door and a fixing seat mounted on a circuit breaker mounting surface, wherein the cover door can rotate relative to the fixing seat;

[0007] A boss is provided at the middle position of the fixing seat;

[0008] One end of the cover door is provided with a rotating shaft rotatably connected to the fixing seat, and a protrusion is provided on the side of the rotating shaft away from the cover door, and the protrusion can be clamped by the boss when rotating.

[0009] The present application provides a corresponding rotating shaft on the cover door, a protrusion on the rotating shaft, and then provides a boss corresponding to the protrusion on the fixed seat. Therefore, when the cover door rotates, the protrusion is just stuck by the boss. The above design realizes a limited opening and closing angle, greatly avoiding the interference problem of surrounding electrical equipment, and avoiding touching the protruding electrical components on the surrounding surface when opening at a large angle, thereby avoiding damage to the electrical components and knocking the surface paint. It can be applied to the compact power supply front panel electrical layout design and has strong overall versatility.

[0010] As a further solution of the present invention: when the cover door rotates relative to the fixing seat to be perpendicular to the fixing seat, the protrusion on the rotating shaft can be just caught by the boss.

[0011] As a further solution of the present invention: the maximum opening and closing angle of the cover door relative to the fixed seat is 90 degrees.

[0012] As a further solution of the present invention, a cover door threaded hole and a captive screw movable groove are provided at the other end of the cover door, wherein the cover door threaded hole is threadedly connected to the captive screw, and the end of the captive screw can be locked into a fixed threaded hole provided on the mounting surface of the circuit breaker, and the captive screw is located in the captive screw movable groove to prevent it from falling off after installation.

[0013] As a further solution of the present invention: a nylon washer is provided between the captive screw and the threaded hole of the cover door.

[0014] As a further solution of the present invention: a concave storage groove is provided on the side of the cover door facing the circuit breaker.

[0015] As a further solution of the present invention: a cover door shielding groove is provided on the outer circle of the storage groove on the side of the cover door facing the circuit breaker, and a conductive rubber strip is installed in the cover door shielding groove.

[0016] As a further solution of the present invention: the rotating shaft adopts an irregular turntable design.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] First, the present application provides a corresponding rotating shaft on the cover door, provides a protrusion on the rotating shaft, and then provides a boss corresponding to the protrusion on the fixed seat. Therefore, when the cover door rotates, the protrusion is just caught by the boss. The above design achieves a limited opening and closing angle, greatly avoiding the problem of interference with surrounding electrical equipment. It prevents protruding electrical components on the surrounding surface from touching when the cover door is opened at a large angle, thereby avoiding damage to the electrical components and scratching the surface paint. It is suitable for compact power supply front panel electrical layout design and has strong overall versatility.

[0019] Secondly, the present application uses captive screws to connect the cover door to the circuit breaker mounting surface. When the captive screws are screwed into the cover door through the threaded holes, they are located in the movable grooves of the captive screws, ensuring that they will not fall off after installation. Nylon washers are added between the captive screws and the cover door to protect the painted surface of the cover door and increase the pre-tightening force when connecting the cover door to the circuit breaker mounting surface.

[0020] Finally, the present application installs a nylon gasket inside the cover door shielding groove, which will squeeze the conductive rubber strip. The corresponding position of the mounting surface of the installed circuit breaker is grooved along the edge. When the cover door is closed, the conductive rubber strip fills the shielding groove, increasing the shielding effect of the entire machine and improving the electromagnetic compatibility performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an exploded view of the circuit breaker protection switch box assembly of Example 1 of the present utility model;

[0022] Figure 2 This is a structural diagram of a cover door according to Example 1 of the present utility model;

[0023] Figure 3 This is a structural diagram of the fixing seat of Example 1 of the utility model;

[0024] Figure 4 This is a cross-sectional view of a circuit breaker protection switch box assembly according to Example 1 of the present utility model;

[0025] Figure 5 This is a schematic diagram of the circuit breaker protection switch box assembly of Example 1 of the utility model when the circuit breaker is closed;

[0026] Figure 6 This is a schematic diagram of the circuit breaker protection switch box assembly of Example 1 of the utility model when the circuit breaker is turned on;

[0027] Figure 7 This is a schematic diagram of the circuit breaker protection switch box assembly of Example 2 of the utility model when the circuit breaker is closed;

[0028] Figure 8 This is a schematic diagram of the circuit breaker protection switch box assembly of Example 2 of the utility model when the circuit breaker is turned on;

[0029] Figure 9 This is a cross-sectional view of the circuit breaker protection switch box assembly of Example 1 of the utility model when the circuit breaker is opened;

[0030] Figure 10 This is a cross-sectional view of the circuit breaker protection switch box assembly of Example 1 of the utility model when the circuit breaker is closed;

[0031] Description of reference numerals:

[0032] 1. Cover door; 11. Cover door threaded hole; 12. Rotating shaft; 13. Cover door shielding slot; 14. Storage slot; 15. Captive screw slot;

[0033] 2. Capable screws;

[0034] 3. Screws;

[0035] 4. Fixed seat; 41. Boss;

[0036] 5. Nylon washer;

[0037] 6. Circuit breaker mounting surface. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0039] Example 1

[0040] Reference Figure 5 and Figure 6 A circuit breaker protection switch box assembly includes a fixing base 4 mounted on a circuit breaker mounting surface 6, and a cover door 1 can be rotatably connected relative to the fixing base 4. The cover doors 1 are arranged horizontally. The number of circuit breaker protection switch box assemblies is the same as the number of circuit breaker switches, and two groups are provided. The cover door 1 is opened and closed by rotating relative to the fixing base 4, thereby protecting the switch. The maximum opening and closing angle of the cover door 1 relative to the fixing base 4 is 90 degrees.

[0041] It should be noted here that the number of circuit breaker switches depends on the actual situation and is not limited in this application. The case given in Example 1 is two groups.

[0042] Reference Figure 1 、 Figure 2 and Figure 4 The cover door 1 is a frame-like structure as a whole. A rotating shaft 12 is provided at the middle position of one side of the cover door 1, and a protrusion is provided on the other side. A cover door threaded hole 11 and a captive screw movable groove 15 are opened on the protrusion. The cover door threaded hole 11 and the captive screw movable groove 15 are connected, and the diameter of the captive screw movable groove 15 is larger than that of the cover door threaded hole 11. The captive screw movable groove 15 faces the circuit breaker mounting surface 6, wherein the protrusion, the cover door 1 and the rotating shaft 12 are integrally formed;

[0043] Furthermore, a concave storage groove 14 is provided on the side of the cover door 1 facing the circuit breaker mounting surface 6, which is equivalent to reserving a storage space for the switch. At the same time, a circle of cover door shielding grooves 13 is provided on the side of the cover door 1 facing the circuit breaker mounting surface 6 and outside the storage groove 14. A conductive rubber strip is loaded in the cover door shielding groove 13, and a groove is opened along the edge at the corresponding position on the circuit breaker mounting surface 6. When the cover door is closed, the conductive rubber strip fills the cover door shielding groove 13 and cooperates with the groove along the edge, thereby increasing the shielding effect of the entire machine and improving the electromagnetic compatibility performance of the equipment.

[0044] Furthermore, the rotating shaft 12 adopts an irregular turntable structure, and a protrusion is provided on the side of the rotating shaft 12 away from the cover door 1. The protrusion can be clamped by the boss 41 provided at the middle position of the fixing seat 4 during rotation.

[0045] Reference Figure 4 The captive screw 2 is threadedly connected to the cover door threaded hole 11, and a nylon washer 5 is provided between the captive screw 2 and the cover door threaded hole 11. The nylon washer 5 can protect the paint surface of the cover door 1 and increase the pre-tightening force when the cover door 1 is connected to the circuit breaker mounting surface 6; the end of the captive screw 2 can be connected to the fixed threaded hole opened on the circuit breaker mounting surface 6; and the captive screw 2 is located in the captive screw movable groove 15 to achieve a state of not falling off after installation.

[0046] Reference Figure 1 The screw 3 can connect the fixing base 4 and the rotating shaft 12, and does not limit the rotation of the rotating shaft 12 inside the fixing base 4. The rotating shaft 12 can still rotate relative to the fixing base 4.

[0047] Reference Figure 1 、 Figure 3 and Figure 9 The fixing base 4 has an overall concave structure, and its two ends are connected with screws 3. A boss 41 is provided in the middle position of the fixing base 4. The rotating shaft 12 is installed in the middle position of the fixing base 4. The two ends of the rotating shaft 12 are connected to the two ends of the fixing base 4 by screws 3. When the cover door 1 rotates perpendicular to the circuit breaker mounting surface 6, the protrusion on the rotating shaft 12 is just stuck with the boss 41.

[0048] The specific operating principle of the present application is as follows: when the cover door 1 is opened, the end of the captive screw 2 is rotated out of the threaded hole connected to the circuit breaker mounting surface 6, and then the cover door 1 is rotated open. At this time, the shaft 12 rotates relative to the fixing base 4. When the cover door 1 is rotated to be perpendicular to the circuit breaker mounting surface 6 (such as Figure 9When the cover door 1 needs to be closed, the cover door 1 is rotated and closed so that the cover door 1 completely overlaps with the circuit breaker mounting surface 6. At this time, the nylon gasket 5 on the cover door shielding groove 13 is exactly engaged with the edge groove at the corresponding position on the circuit breaker mounting surface 6 to achieve sealing. Then, the cover door 1 is tightened to the threaded hole of the circuit breaker mounting surface 6 using the captive screw 2 (as shown). Figure 10 status shown).

[0049] Example 2

[0050] Reference Figure 7 and Figure 8 The other aspects of Example 2 are the same as those of Example 1, except that the cover door 1 and the fixing seat 4 of this embodiment are placed vertically according to the actual requirements of the corresponding switch of the circuit breaker.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A circuit breaker protection switch box assembly, comprising a cover door (1) and a fixing seat (4), characterized in that: The fixing seat (4) is installed on the circuit breaker installation surface, and the cover door (1) can rotate relative to the fixing seat (4); A boss (41) is provided at the middle position of the fixing seat (4); One end of the cover door (1) is provided with a rotating shaft (12) rotatably connected to the fixing seat (4), and a protrusion is provided on the side of the rotating shaft (12) away from the cover door (1), and the protrusion can be clamped by the boss (41) when rotating.

2. A circuit breaker protection switch box assembly according to claim 1, characterized in that: When the cover door (1) is rotated relative to the fixing seat (4) to be perpendicular to the fixing seat (4), the protrusion on the rotating shaft (12) can be just caught by the boss (41).

3. The circuit breaker protection switch box assembly according to claim 1, characterized in that: The maximum opening and closing angle of the cover door (1) relative to the fixing seat (4) is 90 degrees.

4. The circuit breaker protection switch box assembly according to claim 1, characterized in that: The other end of the cover door (1) is provided with a cover door threaded hole (11) and a captive screw movable groove (15), wherein the cover door threaded hole (11) is internally threadedly connected to a captive screw (2), and the end of the captive screw (2) can be connected to a fixed threaded hole provided on the mounting surface of the circuit breaker, and the captive screw (2) is located in the captive screw movable groove (15) to achieve a non-falling state after installation.

5. A circuit breaker protection switch box assembly according to claim 4, characterized in that: A nylon washer (5) is provided between the captive screw (2) and the cover door threaded hole (11).

6. The circuit breaker protection switch box assembly according to claim 1, characterized in that: A concave storage groove (14) is provided on the side of the cover door (1) facing the circuit breaker installation surface.

7. The circuit breaker protection switch box assembly according to claim 6, characterized in that: A cover door shielding groove (13) is provided on the outer ring of the storage groove (14) on the side of the cover door (1) facing the circuit breaker installation surface, and a conductive rubber strip is installed in the cover door shielding groove (13).

8. The circuit breaker protection switch box assembly according to claim 1, characterized in that: The rotating shaft (12) adopts an irregular turntable structure.

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