CN216528695U - Thermal tripping mechanism and circuit breaker - Google Patents
Thermal tripping mechanism and circuit breaker Download PDFInfo
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- CN216528695U CN216528695U CN202123454950.6U CN202123454950U CN216528695U CN 216528695 U CN216528695 U CN 216528695U CN 202123454950 U CN202123454950 U CN 202123454950U CN 216528695 U CN216528695 U CN 216528695U
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- thermal
- deformation
- circuit breaker
- trip mechanism
- wiring board
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Abstract
The utility model discloses a thermal tripping mechanism and a circuit breaker. The thermal trip mechanism includes: a heat transfer member and a thermo-deformable member. Wherein the heat transfer member has a first connection portion adapted to connect with a wiring board; the thermal deformation piece comprises a second connecting part and a deformation part, the second connecting part is connected with the first connecting part, the deformation part is in a separation state arranged at intervals with the lock catch, and a thermal deformation state which is bent towards the direction close to the lock catch to be in contact with the lock catch when the wiring board is heated. Through the thermal tripping mechanism who adopts this structure, when the circuit is in overload, appoint the deformation direction of thermal deformation spare for perpendicular and keep away from the direction of arc extinguishing system, reduced the space that thermal tripping mechanism took the arc extinguishing system for the arc extinguishing effect of arc extinguishing system is not influenced by thermal tripping mechanism, and then the electric arc that produces in inside when making the circuit breaker switching state does not influence other with electrical apparatus, causes the circuit breaker more to have the practicality.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a thermal tripping mechanism and a circuit breaker.
Background
The circuit breaker is important switch equipment in a power system, and when an electric appliance works normally, the circuit breaker can realize the functions of power failure, power supply, circuit conversion and the like by closing or opening a circuit for supplying electric energy; when the electrical appliance is in overload, short circuit and other abnormalities, the circuit breaker can cut off an electrical circuit through tripping, and the safety of working personnel and the normal operation of equipment are avoided due to circuit faults.
Among the prior art, be provided with the release in the circuit breaker, guarantee the circuit and break off the circuit through the dropout effect when transshipping, avoid the circuit to cause the injury to the user and carry out the damage to other circuits. The thermal release is usually selected as the release, and the bending amount of the free end is larger than that of the fixed end when the thermal release is heated by utilizing the difference of expansion coefficients of the bimetallic strips, so that the release is pushed, and the circuit breaker is tripped.
However, with the development of the circuit breaker toward miniaturization, the space utilization rate of the conventional thermal release needs to be reduced, and the thermal release may occupy the space of the arc extinguishing system, so that the arc extinguishing effect of the arc extinguishing system is reduced, and the circuit breaker does not have practicability.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem to be solved by the present invention is that the thermal trip in the prior art is not suitable for the development of miniaturization of the circuit breaker, so that the practicability of the circuit breaker is not high.
To this end, the present invention provides a thermal trip mechanism comprising:
a heat transfer member having a first connection portion adapted to connect with a wiring board;
the thermal deformation piece, the thermal deformation piece includes second connecting portion and deformation portion, the second connecting portion with first connecting portion are connected, the deformation portion has the separation state that sets up with the hasp interval, and the thermal deformation state that the orientation was close to the hasp direction and is crooked in order to contact with the hasp when the wiring board is heated.
Alternatively, the thermal trip mechanism described above,
the first connecting part is of a bending structure.
Alternatively, the thermal trip mechanism described above,
the first connecting part is of a U-shaped structure;
the first connecting part is provided with a first connecting body, a second connecting body and a third connecting body which are connected, the first connecting body is suitable for being connected with the wiring board, and the third connecting body is fixedly connected with the adjusting structure.
Alternatively, the thermal trip mechanism described above,
the opening direction of the U-shaped structure is perpendicular to the extending direction of the thermal deformation piece.
Alternatively, the thermal trip mechanism described above,
the opening direction of the U-shaped structure is arranged towards the extending direction of the deformation part.
Alternatively, the thermal trip mechanism described above,
the adjusting structure is suitable for being installed on the shell;
the heat transfer member further comprises an adjustment portion connected with the first connection portion, the adjustment portion abutting against the adjustment structure;
the adjusting structure drives the adjusting part to drive the thermal deformation piece to move close to or far away from the lock catch under the action of external force.
A circuit breaker, comprising:
a wiring board;
and the thermal tripping mechanism is connected with the wiring board.
Alternatively, the circuit breaker described above,
the wiring board is arranged in the shell, and the adjusting structure of the thermal tripping mechanism is arranged on the shell.
Alternatively, the circuit breaker described above,
the adjusting structure is characterized by further comprising an installation frame, the installation frame is fixedly installed on the shell, and an insertion part suitable for installation of the adjusting structure is arranged on the installation frame.
Alternatively, the circuit breaker described above,
the plug connector is in threaded connection with the adjusting structure, and the plug connector is inserted in the inserting part.
The technical scheme provided by the utility model has the following advantages:
the utility model provides a thermal trip mechanism, comprising: a heat transfer member and a heat deformation member. Wherein the heat transfer member has a first connection portion adapted to connect with a wiring board; the thermal deformation piece comprises a second connecting part and a deformation part, the second connecting part is connected with the first connecting part, the deformation part is provided with a separation state arranged at intervals of the lock catches, and a thermal deformation state which is close to the lock catches and is bent in the lock catch direction to be in contact with the lock catches when the wiring board is heated.
The thermal tripping mechanism of this structure is through connecting the heat transfer piece in the wiring board, is connected the second connecting portion of thermal deformation piece with the heat transfer piece simultaneously, and when the circuit at wiring board place was in the overload, the deformation portion of thermal deformation piece can be heated and take place the bending towards the direction of hasp, until with the lock joint after, with the circuit disconnection, implement the protection to other components and parts inside the circuit breaker, the maintenance personal of being convenient for operates when follow-up maintenance. Through the thermal tripping mechanism who adopts this structure, when the circuit is in overload, appoint the deformation direction of thermal deformation spare for perpendicular and keep away from the direction of arc extinguishing system, reduced the space that thermal tripping mechanism took the arc extinguishing system for the arc extinguishing effect of arc extinguishing system is not influenced by thermal tripping mechanism, and then the electric arc that produces in inside when making the circuit breaker switching state does not influence other with electrical apparatus, causes the circuit breaker more to have the practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a circuit breaker provided in the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a thermal trip mechanism provided in the present invention;
fig. 3 is a schematic structural diagram of another embodiment of a thermal trip mechanism provided in the present invention;
fig. 4 is a schematic structural diagram of the thermal trip mechanism provided in the present invention in an overload state.
Description of reference numerals:
1-a heat transfer member; 11-a first connection; 111-a first linker; 112-a second connector; 113-a third linker; 12-an adjustment section;
2-a heat deformable member; 21-a second connection; 22-a deformation;
3-a regulating structure;
4-a patch panel;
5-a shell;
6-mounting a frame; 61-a plug-in part;
7-a plug connector;
8-locking.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a thermal trip mechanism, as shown in fig. 1 to 3, including: a heat transfer member 1 and a heat deformation member 2. Wherein the heat transfer member 1 has a first connection portion 11, the first connection portion 11 being adapted to be connected with the wiring board 4; the thermal deformation member 2 includes a second connection portion 21 and a deformation portion 22, the second connection portion 21 is connected to the first connection portion 11, and the deformation portion 22 has a separated state spaced from the latch 8 and a thermal deformation state bent toward a direction close to the latch 8 to contact the latch 8 when the wiring board 4 is heated.
As shown in fig. 1 to 4, the thermal trip mechanism provided in this embodiment has a thermal separation state and a thermal deformation state, and when the internal circuit of the circuit breaker is in a normal operation state, that is, the deformation portion 22 is not in contact with the latch 8, there is a gap, so that the deformation portion 22 and the latch 8 are in the separation state; when the circuit breaker internal circuit is overloaded, that is, the deformation portion 22 bends toward the latch 8 until contacting the latch 8, so that the deformation portion 22 and the latch 8 are in a thermal deformation state, and at this time, the circuit is broken, and the circuit can be effectively protected.
As shown in fig. 2, in the thermal trip mechanism provided in this embodiment, the first connection portion 11 is a bent structure. Wherein, the first connecting part 11 is in a U-shaped structure; the first connecting portion 11 has a first connecting body 111, a second connecting body 112 and a third connecting body 113 connected together, the first connecting body 111 being adapted to be connected to the terminal block 4, the third connecting body 113 being fixedly connected to the adjusting structure 3. For example, the opening direction of the U-shaped structure provided by the present embodiment is set to be perpendicular to the extending direction of the thermal deformation member 2, but of course, in other alternative embodiments, the opening direction of the U-shaped structure may also be set to be toward the extending direction of the thermal deformation member 2.
As shown in fig. 1, the thermal trip mechanism provided in this embodiment further includes an adjusting structure 3, where the adjusting structure 3 is adapted to be mounted on the housing 5; the heat transfer member 1 further comprises an adjustment portion 12 connected to the first connection portion 11, the adjustment portion 12 abutting against the adjustment structure 3; the adjusting structure 3 drives the adjusting part 12 to drive the thermal deformation member 2 to move close to or far away from the lock catch 8 under the action of external force.
Through foretell thermal tripping device, when the inside circuit of circuit breaker was in overload, the deformation direction of thermal deformation spare was for the direction perpendicular and keeping away from the arc extinguishing system, had reduced the space that thermal tripping device took the arc extinguishing system for the arc extinguishing effect of arc extinguishing system is not influenced by thermal tripping device, and then the electric arc that produces in inside when making the circuit breaker switching state does not influence other with electrical apparatus, causes the circuit breaker more to have the practicality.
Example 2
The present embodiment provides a circuit breaker including the thermal trip mechanism provided in embodiment 1. As shown in fig. 1, compared with the indicator 1 provided in embodiment 1, the indicator further includes: a wiring board 4. At this time, the thermal trip mechanism is connected to the terminal block 4. In the present embodiment, the terminal block 4 is arranged in a housing 5, and the adjusting mechanism 3 of the thermal trip mechanism is mounted on the housing 5.
As shown in fig. 1, the thermal trip mechanism provided in this embodiment further includes a mounting frame 6 and a plug 7, which are fixedly mounted on the housing 5, and the mounting frame 6 is provided with an insertion portion 61 suitable for mounting the adjusting structure 3; the plug-in unit 7 is connected with the adjusting structure 3 in a threaded manner, and the plug-in unit 7 is plugged in the plugging part 61. In this embodiment, for example, the mounting bracket 6 is a convex portion of the cover plate, the plug 7 is placed in the mounting bracket 6, the adjusting structure 3 is in threaded connection with the plug 7, the adjusting structure 3 is close to the latch 8 by rotating, so that the gap between the adjusting structure 3 and the thermal deformation member 2 is reduced, at this time, the tripping time of the thermal tripping mechanism can be reduced, of course, in other embodiments, when the adjusting structure 3 is rotated to be away from the latch 8, the gap between the adjusting structure 3 and the thermal deformation member 2 is increased, and at this time, the tripping time of the thermal tripping mechanism can be increased.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.
Claims (10)
1. A thermal trip mechanism, comprising:
a heat transfer member (1) having a first connection portion (11), the first connection portion (11) being adapted to be connected with a wiring board (4);
thermal deformation spare (2), thermal deformation spare (2) include second connecting portion (21) and deformation portion (22), second connecting portion (21) with first connecting portion (11) are connected, deformation portion (22) have with hasp (8) interval set up the separation state, and when wiring board (4) are heated orientation be close to hasp (8) direction bending with the thermal deformation state with hasp (8) contact.
2. The thermal trip mechanism of claim 1,
the first connecting part (11) is of a bent structure.
3. The thermal trip mechanism of claim 2,
the first connecting part (11) is of a U-shaped structure;
the first connecting part (11) is provided with a first connecting body (111), a second connecting body (112) and a third connecting body (113) which are connected, the first connecting body (111) is suitable for being connected with the wiring board (4), and the third connecting body (113) is fixedly connected with the adjusting structure (3).
4. The thermal trip mechanism of claim 3,
the opening direction of the U-shaped structure is perpendicular to the extending direction of the thermal deformation piece (2).
5. The thermal trip mechanism of claim 3,
the opening direction of the U-shaped structure faces the extending direction of the thermal deformation piece (2).
6. The thermal trip mechanism of claim 5,
further comprising an adjustment structure (3), said adjustment structure (3) being adapted to be mounted on the housing (5);
the heat transfer member (1) further comprises an adjustment portion (12) connected with the first connection portion (11), the adjustment portion (12) abutting against the adjustment structure (3);
the adjusting structure (3) drives the adjusting part (12) to drive the thermal deformation piece (2) to move close to or far away from the lock catch (8) under the action of external force.
7. A circuit breaker, comprising:
a wiring board (4);
thermal trip mechanism, being a thermal trip mechanism according to any of claims 1-6, connected to the terminal block (4).
8. The circuit breaker of claim 7, comprising:
the circuit board is characterized by comprising a shell (5), wherein the wiring board (4) is arranged in the shell (5), and an adjusting structure (3) of the thermal tripping mechanism is arranged on the shell (5).
9. The circuit breaker of claim 8,
the adjusting mechanism is characterized by further comprising an installation frame (6) fixedly installed on the shell (5), wherein an insertion part (61) suitable for installation of the adjusting structure (3) is arranged on the installation frame (6).
10. The circuit breaker of claim 9,
the adjusting mechanism is characterized by further comprising a plug connector (7), wherein the plug connector (7) is in threaded connection with the adjusting structure (3), and the plug connector (7) is inserted into the inserting part (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454950.6U CN216528695U (en) | 2021-12-31 | 2021-12-31 | Thermal tripping mechanism and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123454950.6U CN216528695U (en) | 2021-12-31 | 2021-12-31 | Thermal tripping mechanism and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216528695U true CN216528695U (en) | 2022-05-13 |
Family
ID=81518032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123454950.6U Active CN216528695U (en) | 2021-12-31 | 2021-12-31 | Thermal tripping mechanism and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216528695U (en) |
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2021
- 2021-12-31 CN CN202123454950.6U patent/CN216528695U/en active Active
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