Circuit breaker with private operation prevention structure

Abstract

The utility model relates to a circuit breaker with a private operation prevention structure. The circuit breaker mainly solves the problem that the conventional circuit breaker is only filled with glue in an operation hole and is not stable. The device is characterized by further comprising an operation hole (11) which is formed in the outer wall of the shell, and at least part of the adjusting screw is arranged in the operation hole; and the glue pouring groove (12) is arranged in the shell and is communicated with the circumferential wall of the operation hole. According to the circuit breaker with the private operation prevention structure, the whole circuit breaker is very stable and is not easy to damage after glue filling is carried out through the operation hole and the glue filling groove.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically to a circuit breaker with a structure to prevent unauthorized operation. Background Technology

[0002] Miniature circuit breakers are characterized by their advanced structure, reliable performance, high breaking capacity, and compact and aesthetically pleasing design. They are used for overload and short-circuit protection of lighting, power distribution lines, and equipment in office buildings, residences, and similar structures. They can also be used for infrequent switching and transfer of circuits. They are mainly used in various locations including industrial, commercial, high-rise, and residential buildings.

[0003] Currently, most miniature circuit breakers are equipped with adjusting screws for adjusting the bimetallic strips. To prevent users from adjusting them themselves, the method used is to apply glue. However, conventional glue application only involves applying glue into the operating hole, which is not very secure. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides a circuit breaker with an anti-unauthorized operation structure, which mainly solves the problem that conventional circuit breaker potting only involves potting the potting material into the operating hole, which is not stable.

[0005] The technical solution of this utility model is as follows:

[0006] A circuit breaker with an anti-unauthorized operation structure includes a housing, a tripping mechanism and a contact mechanism housed within the housing, the tripping mechanism including a bimetallic strip, and an adjusting screw movably connected within the housing, the adjusting screw being disposed opposite to the bimetallic strip. It also includes...

[0007] An operating hole is provided on the outer wall of the housing, and at least part of the adjusting screws are provided in the operating hole;

[0008] A glue-filling tank is located inside the housing and communicates with the circumferential wall of the operating hole.

[0009] At least a portion of the glue-filling groove is disposed opposite to the threaded portion of the adjusting screw.

[0010] The glue-filling groove is provided on both sides of the operating hole.

[0011] The tripping mechanism also includes a bracket, on which a rotatable latch is provided, and a tripping lever is installed on the latch.

[0012] The housing is provided with a positioning boss for fixing the pin of the torsion spring. The release rod is located on the left side of the bracket, and the positioning boss is located on the right side of the bracket.

[0013] The bracket is provided with a mounting base, and the mounting base is equipped with a rotating shaft for mounting the moving contact. The latch is provided with a through groove, and part of the mounting base passes through the through groove.

[0014] The housing has a mounting groove, in which a nut is installed, and the adjusting screw is threadedly connected to the nut.

[0015] The adjusting screw has a spherical surface for contacting the bimetallic strip.

[0016] The nut has a square cross-section.

[0017] The beneficial effects of this utility model are: This utility model provides a circuit breaker with an anti-unauthorized operation structure. After the glue is injected through the operation hole and the glue injection tank, the whole is very stable and not easy to break. Attached Figure Description

[0018] Figure 1 This is a perspective view of one embodiment of the present invention.

[0019] Figure 2 This is a partial perspective view of one embodiment of the present invention.

[0020] Figure 3 This is a partial explosion diagram of one embodiment of the present invention.

[0021] Figure 4 This is a perspective view of the handle according to one embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. A circuit breaker with an anti-unauthorized operation structure includes a housing 1, within which a tripping mechanism and a contact mechanism are provided. The tripping mechanism includes a bimetallic strip 21. An adjusting screw 22, movably connected to the bimetallic strip, is provided within the housing. The adjusting screw is positioned opposite to the bimetallic strip. An operating hole 11 is also included, located on the outer wall of the housing, with at least a portion of the adjusting screw residing within the operating hole. A glue-filling tank 12 is located within the housing and communicates with the circumferential wall of the operating hole. After glue filling, not only the operating hole but also the glue-filling tank is filled, increasing the glue volume. Furthermore, the glue-filling tank itself is not directly connected to the outside (it is indirectly connected to the operating hole), and cannot be removed after the glue has been filled and formed.

[0023] In this embodiment, as shown in the figure, at least a portion of the glue-filling groove is positioned opposite to the threaded portion of the adjusting screw. After glue is applied, the threads are fixed in place, preventing the adjusting screw from rotating even if holes are drilled in the glue.

[0024] In this embodiment, as shown in the figure, glue-filling grooves are provided on both sides of the operating hole. This results in a more stable structure.

[0025] In this embodiment, as shown in the figure, the tripping mechanism further includes a bracket 31, on which a rotatable latch 32 is provided, and a tripping rod 33 is mounted on the latch. The bracket also has a tripping latch, positioned opposite the latch. One end of the tripping rod extends out of the housing to drive other circuit breakers installed side-by-side to trip; this is prior art and will not be described further.

[0026] In this embodiment, as shown in the figure, the housing is provided with a positioning boss 13 for fixing the pins of the torsion spring 14. The release lever is located on the left side of the bracket, and the positioning boss is located on the right side of the bracket. Conventionally, the release lever and the positioning boss are installed on the same side, which is relatively space-constrained. This application places the positioning boss and the release lever on opposite sides of the bracket, making more efficient use of space.

[0027] In this embodiment, as shown in the figure, the bracket is provided with a mounting base 34, and the mounting base is equipped with a rotating shaft 341 for mounting the moving contact 30. The latch is provided with a through groove 321, through which part of the mounting base passes. The through groove on the latch provides the necessary space for the mounting base, and may also reduce material usage and save costs.

[0028] In this embodiment, as shown in the figure, the housing has a mounting groove 15, and a nut 16 is installed in the mounting groove. The adjusting screw is threadedly connected to the nut. The nut can be installed in the mounting groove by means of snap-fit ​​or other methods, and then the adjusting screw can be engaged with the threaded hole of the nut.

[0029] In this embodiment, as shown in the figure, the surface of the adjusting screw that contacts the bimetallic strip is spherical to prevent damage to the bimetallic strip.

[0030] In this embodiment, as shown in the figure, the nut has a square cross-section.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A circuit breaker with an anti-unauthorized operation structure, comprising a housing (1), wherein a tripping mechanism and a contact mechanism are provided within the housing, the tripping mechanism comprising a bimetallic strip (21), and an adjusting screw (22) movably connected within the housing, the adjusting screw being disposed opposite to the bimetallic strip, characterized in that: Also include The operation hole (11) is arranged on the outer wall of the shell, and at least part of the adjusting screw is arranged in the operation hole; The glue filling groove (12) is arranged in the shell and communicates with the circumferential wall of the operation hole.

2. The circuit breaker with anti-tamper structure according to claim 1, characterized in that: At least part of the glue filling groove is arranged opposite to the threaded part of the adjusting screw.

3. The circuit breaker with anti-tamper structure according to claim 2, characterized in that: Both sides of the operation hole are provided with the glue filling groove.

4. The circuit breaker with anti-tamper structure according to claim 3, characterized in that: The tripping mechanism further comprises a bracket (31), and the bracket is provided with a lock catch (32) rotatably arranged thereon, and the lock catch is provided with a tripping rod (33) mounted thereon.

5. The circuit breaker with anti-tamper structure according to claim 4, characterized in that: The shell is provided with a positioning boss (13) for fixing the pin of the torsion spring (14), the tripping rod is arranged on the left side of the bracket, and the positioning boss is arranged on the right side of the bracket.

6. The circuit breaker with anti-tamper structure according to claim 5, characterized in that: The bracket is provided with a mounting seat (34), the mounting seat is provided with a rotating shaft (341) for mounting the movable contact (30), and the lock catch is provided with a through groove (321), and part of the mounting seat passes through the through groove.

7. The circuit breaker with anti-tamper structure according to claim 6, characterized in that: The shell is provided with a mounting groove (15), the mounting groove is provided with a nut (16), and the adjusting screw is connected with the nut through threads.

8. The circuit breaker with anti-tamper structure according to claim 7, characterized in that: The surface of the adjusting screw for contacting the bimetallic strip is a spherical surface.

9. The circuit breaker with anti-tamper structure according to claim 8, characterized in that: The cross section of the nut is square.

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