Marine circuit breaker with switching function
By introducing thermally sensitive bimetallic sheet and rotary switch structure into the circuit breaker, the problem that existing circuit breakers cannot actively control the circuit opening and closing is solved, and the automatic power outage and manual reset functions are realized when the circuit is abnormal, ensuring the safety of electrical appliances and users.
Patent Information
- Application Number
- CN202422054562.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The existing circuit breakers can only be automatically disconnected when the circuit is abnormal, and cannot actively control the circuit's opening and closing state according to the user's subjective wishes, and lack the manual reset function after abnormal disconnection.
The thermally sensitive bimetallic sheet and rotary switch structure are adopted, and the circuit is automatically opened by thermal deformation of the thermally sensitive bimetallic sheet, and the opening and closing state of the circuit is manually controlled by the rotary switch. It is equipped with a reset button and a limit structure to ensure safe reset.
It realizes automatic power outage when the circuit is abnormal, and allows users to actively control the circuit opening and closing status as needed to ensure the safety of electrical appliances and users.
Smart Images
Figure CN223296750U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of circuit breakers, in particular to a circuit breaker. Background Art
[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. It is an essential component in a ship's power supply system. It automatically cuts off power in the event of an overload, short circuit, or leakage, ensuring the safety of equipment and personnel. Currently, most circuit breakers are designed to conduct current immediately upon installation and only disconnect the circuit when an abnormality occurs. They cannot be disconnected based on the user's subjective judgment. Summary of the Invention
[0003] The utility model aims to solve the deficiencies of the existing technology and provides a marine circuit breaker with a switch function.
[0004] To address the above-mentioned technical problems, the present invention provides a marine circuit breaker with a switch function, comprising a main body and a rotary switch. A thermally deformable bimetallic strip is disposed centrally within the main body via a fixed post. The bimetallic strip is rotatably connected to the fixed post. Two static contact posts are disposed on either side of the fixed post. The bimetallic strip has protruding movable contact portions corresponding to the two static contact posts. Two slots corresponding to the two movable contact portions are defined at the lower end of the rotary switch, and the movable contact portions engage within the slots. The bimetallic strip is composed of two metals with different coefficients of expansion. When overheated, the two metal strips deform. Because the metal strip in contact with the static contact posts expands more, the bimetallic strip tilts upward, thereby disconnecting the entire circuit. Furthermore, the protruding movable contact portions on either side of the bimetallic strip ensure that the circuit is connected when the movable contact portions contact the static contact posts. When the movable contact portions rotate to another position, the circuit is disconnected. The protruding movable contact part is embedded in the card slot, so that when the rotary switch is rotated, the entire circuit can be controlled to be disconnected. With this structure, not only can the power be automatically cut off when an abnormality occurs in the circuit, but the power can also be actively cut off according to actual needs.
[0005] In the above technical solution, preferably, fixing plates are symmetrically provided on either side of the main body, each having fixing holes defined therein. A fastener is provided within each of these holes to secure the upper cover to the upper surface of the main body. A hole is defined in the center of the upper cover to expose one end of the rotary switch. The rotary switch is rotatably connected to the upper cover, thereby confining the rotary switch within the upper cover and allowing it to rotate. This structure secures the rotary switch while ensuring its functionality.
[0006] In the above technical solution, preferably, the rotary switch is hollow and has a small opening at the exposed end. A reset switch is enclosed within the rotary switch, with one end of the reset switch extending from the small opening. Thus, the reset switch is confined within the rotary switch and is slidably connected to the rotary switch. A deep groove is defined in the center of the reset switch, within which a reset button is fixed to the outer surface of the reset switch by screws. The outer diameter of the reset button is larger than the small opening, thereby confining the reset button to the outside of the rotary switch. A spring is enclosed around the outer periphery of the fixing column. The spring extends into and is compressed within the deep groove. When the reset button is pressed, the spring ejects the reset switch and the reset button. With this structure, after a circuit anomaly occurs, the thermal bimetallic strip tilts upward. Pressing the reset button causes the reset switch to press downward on the tilted thermal bimetallic strip, resetting the thermal bimetallic strip for reuse.
[0007] In the above technical solution, preferably, the upper cover surface has an indicator mark, and the rotary switch is provided with a corresponding indicator arrow protrusion. With this structure, it is possible to clearly distinguish whether it is in working state during use.
[0008] In the above technical solution, preferably, a limiting post is provided inside the main body, and corresponding limiting protrusions are provided on both sides of the locking slot of the rotary switch. With this structure, the rotary switch can only rotate from the on state to the off state, or from the off state to the on state, thereby better determining whether the rotation position of the rotary switch is accurate.
[0009] Compared with the prior art, the present invention has the following beneficial effects: the marine circuit breaker with a switch function can control the on / off state of the circuit according to the actual situation of the user when in use; at the same time, after the circuit breaker is disconnected due to an abnormality in the circuit, the user needs to confirm and manually reset it, thus ensuring the safety of the electrical appliance and the user. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a schematic diagram of the exploded structure of an embodiment of the present utility model.
[0011] Figure 2 This is a schematic diagram of a partially exploded structure of an embodiment of the present utility model.
[0012] Figure 3 This is a schematic structural diagram of the main part of an embodiment of the present utility model. DETAILED DESCRIPTION
[0013] The present invention is described in further detail below with reference to the accompanying drawings and specific embodiments: Figures 1 to 3A marine circuit breaker with a switch function comprises a main body 1 and a rotary switch 3. A thermally deformable bimetallic strip 2 is centrally located within the main body 1 via a fixed post 14. The bimetallic strip 2 is rotatably connected to the fixed post 14, flanked by two static contact posts 11. The bimetallic strip 2 has protruding movable contact portions 21 on either side, corresponding to the two static contact posts 11. The rotary switch 3 has two slots 31 at its lower end, corresponding to the two movable contact portions 21. The movable contact portions 21 fit into the slots 31. The bimetallic strip 2 is composed of two metals with different coefficients of expansion. When overheated, the two metals deform. Because the metal in contact with the static contact posts 11 expands more, the bimetallic strip 2 tilts upward, disconnecting the entire circuit. Furthermore, the protruding movable contact portions 21 on either side of the bimetallic strip 2 ensure that the circuit is connected when the movable contact portions 21 contact the static contact posts 11. When the movable contact portions 21 rotate to another position, the circuit is disconnected. The protruding movable contact portion 21 is embedded in the card slot 31, so that when the rotary switch 3 is rotated, the opening and closing of the entire circuit can be controlled.
[0014] In this embodiment, fixing plates 12 are symmetrically positioned on either side of the main body 1. Fixing holes 13 are defined on these plates, and fasteners are used to secure the upper cover 6 to the upper surface of the main body 1. A hole is defined in the center of the upper cover 6, exposing one end of the rotary switch 3. The diameter of the unexposed end of the rotary switch 3 is larger than the hole. The rotary switch 3 is rotatably connected to the upper cover 6, thereby confining the rotary switch 3 within the upper cover and allowing it to rotate.
[0015] In this embodiment, the rotary switch 3 is hollow and has a small opening at its exposed end. A reset switch 4 is enclosed within the rotary switch 3, with one end of the reset switch 4 extending from the small opening. This allows the reset switch 4 to be located within the rotary switch 3 and slidably connected thereto. A deep groove 41 is centrally located within the reset switch 4, within which a reset button 5 is secured to the outer surface of the reset switch 4 via a screw. The outer diameter of the reset button 5 is larger than the small opening, allowing the reset button 5 to be located outside the rotary switch 3. A spring 15 is enclosed around the outer periphery of the fixing post 14. The spring 15 extends into the deep groove 41 and is compressed therein. When the reset button 5 is pressed, the spring 15 ejects the reset switch 4 and the reset button 5. With this structure, after a circuit anomaly occurs and the thermosensitive bimetallic strip 2 tilts upward, pressing the reset button 5 causes the reset switch 4 to press downward against the tilted thermosensitive bimetallic strip 2, resetting the thermosensitive bimetallic strip 2 for reuse.
[0016] In this embodiment, the upper cover 6 has an indicator mark on its surface, and the rotary switch 3 is provided with a corresponding indicator arrow protrusion 33. With this structure, it is possible to clearly distinguish whether it is in working state during use.
[0017] In this embodiment, a limiting post 16 is provided within the main body 1, and corresponding limiting protrusions 32 are provided on either side of the retaining groove 31 on the rotary switch 3. This structure ensures that the rotary switch 3 can only rotate through a fixed angle from the on state to the off state, or vice versa, making it easier to determine whether the rotary switch's rotation position is correct.
[0018] Compared with the prior art, the present invention provides a marine circuit breaker with a switch function that can control the on / off state of the circuit according to the actual situation of the user when in use. At the same time, after the circuit breaker is disconnected due to an abnormality in the circuit, the user needs to confirm and manually reset it, thus ensuring the safety of the electrical appliance and the user.
[0019] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.
Claims
1. A marine circuit breaker with a switch function, characterized in that: The invention comprises a main body (1) and a rotary switch (3), wherein a heat-sensitive bimetallic strip (2) that deforms when heated is provided at a central position inside the main body (1) via a fixed column (14), the heat-sensitive bimetallic strip (2) being rotatably connected to the fixed column (14), two static contact columns (11) being provided on both sides of the fixed column (14), and dynamic contact portions (21) corresponding to the two static contact columns (11) protruding from both sides of the heat-sensitive bimetallic strip (2), and two slots (31) corresponding to the two dynamic contact portions (21) being provided at the lower end of the rotary switch (3), and the dynamic contact portions (21) being embedded in the slots (31).
2. A marine circuit breaker with a switch function according to claim 1, characterized in that: The main body (1) is symmetrically provided with fixing plates (12) on both sides. The fixing plates (12) are provided with fixing holes (13). The upper cover (6) is fixed to the upper surface of the main body (1) through a fixer in the fixing holes (13). The upper cover (6) has a hole in the center thereof to allow one end of the rotary switch (3) to be exposed. The rotary switch (3) is rotatably connected to the upper cover (6).
3. A marine circuit breaker with a switch function according to claim 1, characterized in that: The rotary switch (3) is hollow inside and has a small opening at the exposed end. A reset switch (4) is sleeved inside the rotary switch (3). One end of the reset switch (4) extends out from the small opening. The reset switch (4) is slidably connected to the rotary switch (3). A deep groove (41) is provided in the center of the reset switch (4). A reset button (5) is fixed to the outer surface of the reset switch (4) in the deep groove (41) by screws. A spring (15) is sleeved on the outer periphery of the fixing column (14). The spring (15) extends into the deep groove (41) and is compressed in the deep groove (41).
4. A marine circuit breaker with a switch function according to claim 1, characterized in that: The upper cover (6) has an indicator mark on its surface, and the rotary switch (3) is provided with a corresponding indicator arrow protrusion (33).
5. A marine circuit breaker with a switch function according to claim 1, characterized in that: A limiting column (16) is provided inside the main body (1), and corresponding limiting protrusions (32) are provided on both sides of the clamping slot (31) on the rotary switch (3).