Circuit breaker and power assembly

Abstract

The utility model discloses a circuit breaker and a power assembly, and the circuit breaker comprises a housing assembly which comprises a housing and an injection molding part, and the housing is provided with an opening; the piston is movably arranged in the shell; the detonating device is arranged in the shell, the part, driving the piston, of the detonating device extends out of the shell from the opening after the detonating device detonates, and the shell and the detonating device are fixedly connected through the injection molding part. According to the circuit breaker provided by the utility model, the effect of disconnecting a circuit can be realized, the structural connection strength is high, the integration can be realized, the installation in a smaller space is facilitated, and the universality can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit protection equipment, and more specifically, to a circuit breaker and a power assembly. Background Art

[0002] The circuit breaker is used to protect the circuit when the circuit is overcurrent. The gas generated after detonation pushes the piston to cut off the loaded components to achieve the effect of disconnecting the circuit. In the related art, the internal structure of the circuit breaker is not fixed reliably, and the circuit breaker occupies a large space, which cannot meet the installation requirements in a small installation space. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a circuit breaker, which can achieve the effect of disconnecting the circuit, has high structural connection strength, can be integrated, is easy to install in a small space, and can achieve versatility.

[0004] Another object of the present invention is to provide a power assembly having the above-mentioned circuit breaker.

[0005] The circuit breaker according to the embodiment of the utility model includes: a shell assembly, the shell assembly includes an outer shell and an injection molded part, the outer shell has an opening; a piston, the piston is movably arranged in the outer shell; an ignition device, the ignition device is arranged in the outer shell, and the ignition device drives the part of the piston to extend out of the outer shell from the opening after detonation, wherein the injection molded part fixedly connects the outer shell and the ignition device.

[0006] According to the circuit breaker of the embodiment of the utility model, the shell has an opening, the piston is movably arranged in the shell, the detonating device is arranged in the shell, and the part driving the piston extends out of the shell from the opening after the detonating device is detonated. The detonating device can provide power for the piston, so that the piston can quickly move toward the direction of the load-bearing component and cut off the load-bearing component, disconnecting the power supply end connected to the load-bearing component from the load end, thereby realizing the circuit disconnection effect of the circuit breaker, and the injection molding part fixes the shell and the detonating device to ensure that the detonating device is reliably fixed on the shell assembly, effectively improving the connection strength, realizing the integration of the circuit breaker, which is beneficial to reducing the manufacturing cost, and can reduce the size of the circuit breaker, which is convenient for the circuit breaker to be installed in a smaller space, which is beneficial to realizing the versatility of the circuit breaker.

[0007] In addition, the circuit breaker according to the above embodiment of the utility model may also have the following additional technical features:

[0008] According to some embodiments of the circuit breaker of the present invention, the injection molded part includes: a main body, which covers at least a portion of the outer wall of the shell; a base, which is located in the shell and connected to the shell, and at least a portion of the detonation device is embedded in the base.

[0009] According to some embodiments of the utility model, the shell is provided with a lead-out port, and the detonation device includes: a powder box, which is located in the shell and at least partially embedded in the base; a fuse, one end of the fuse is connected to the powder box, and the other end passes through the lead-out port and extends out of the shell, and the base is connected to the main body at the lead-out port.

[0010] According to some embodiments of the utility model, the injection molded part also includes: an assembly part, which is arranged outside the main body and connected to the main body, and the end of the fuse facing away from the gunpowder box extends into the assembly part, and a short-circuit bar cooperating with the fuse is provided in the assembly part.

[0011] According to some embodiments of the present utility model, the injection molded part includes: a first reinforcing rib, wherein the first reinforcing rib connects the outer peripheral wall of the assembly part and the outer wall surface of the main body part.

[0012] According to some embodiments of the present utility model, the injection molded part includes: an anti-error column, which is connected to the main body and is used to limit the direction of the circuit breaker.

[0013] According to some embodiments of the utility model, the anti-error column includes: a first anti-error column and a second anti-error column, the first anti-error column is located in the middle of the outer shell in the length direction, and the second anti-error column is located at one end of the first anti-error column along the length direction of the outer shell.

[0014] According to some embodiments of the present invention, the injection molded part includes: a connecting portion, the connecting portion is located outside the main body portion and connected to the main body portion, and a connecting hole is provided on the connecting portion.

[0015] According to some embodiments of the present utility model, the injection molded part includes: a second reinforcing rib, wherein the second reinforcing rib connects the connecting portion and an outer wall surface of the main body portion.

[0016] According to some embodiments of the present invention, there are multiple openings, multiple pistons, and the multiple pistons correspond one-to-one to the multiple openings.

[0017] According to some embodiments of the utility model, the multiple openings include a first opening and a second opening, the first opening and the second opening are respectively located at both ends of the length direction of the shell, the multiple pistons include a first piston opposite to the first opening and a second piston opposite to the second opening, and the detonation device is located between the first piston and the second piston.

[0018] According to some embodiments of the utility model, the injection molded part includes a guide portion arranged in the shell, the guide portion is located between the first piston and the second piston and opposite to the detonating device, and the side of the guide portion facing the detonating device has a first inclined surface and a second inclined surface arranged along the length direction of the shell, and the first inclined surface and the second inclined surface are inclined in a direction away from the detonating device towards a direction away from each other.

[0019] According to some embodiments of the present invention, two ends of the guide portion along the length direction of the shell abut against the first piston and the second piston respectively.

[0020] According to some embodiments of the utility model, a sealing groove extending along the circumferential direction of the piston is provided on the peripheral wall of the piston, and the circuit breaker further comprises: a sealing ring located in the sealing groove and sealedly connected to the housing.

[0021] According to some embodiments of the utility model, an exhaust groove is provided on the inner wall of the sealing groove, and the exhaust groove includes: a first connecting section, which is provided on the bottom wall of the sealing groove and extends along the axial direction of the piston; a second connecting section and a third connecting section, which are respectively provided on the opposite side walls of the sealing groove and connected with the first connecting section, and one end of the second connecting section and the third connecting section away from the first connecting section extends to the outer peripheral wall of the piston.

[0022] According to some embodiments of the utility model, the piston includes: a first section, along the radial direction of the piston, the radial length of the first section is greater than the aperture of the opening; a second section, one end of the second section is connected to an end of the first section away from the detonating device, along the radial direction of the piston, the radial length of the second section is less than the aperture of the opening, after the detonating device is detonated, at least part of the second section extends out of the opening from the shell.

[0023] According to some embodiments of the utility model, at least one end of the shell in the length direction is provided with a flange bent along the axial direction close to the shell, and the inner peripheral wall of the flange defines the opening.

[0024] According to some embodiments of the utility model, a avoidance opening is provided on the flange.

[0025] According to some embodiments of the present invention, the end surface of the piston facing the detonating device is provided with a concave portion which is concave away from the detonating device.

[0026] The power assembly according to the embodiment of the utility model includes: a motor and a motor controller, wherein the motor and the motor controller are connected via a load-bearing component; and the circuit breaker according to the embodiment of the utility model, wherein the circuit breaker is used to disconnect the load-bearing component.

[0027] According to the power assembly of the embodiment of the utility model, an opening is provided through the shell, and the piston is movably arranged in the shell, and the detonating device is arranged in the shell. After the detonating device is detonated, the part that drives the piston extends out of the shell from the opening. The detonating device can provide power for the piston, so that the piston can quickly move toward the direction of the load-bearing component and cut off the load-bearing component, disconnecting the power supply end connected to the load-bearing component from the load end, thereby achieving the circuit disconnection effect of the circuit breaker, and the injection molded part fixes the shell and the detonating device to ensure that the detonating device is reliably fixed on the shell assembly, effectively improving the connection strength, realizing the integration of the circuit breaker, which is beneficial to reducing the manufacturing cost, and can reduce the size of the circuit breaker, which is convenient for the circuit breaker to be installed in a smaller space, which is beneficial to achieving the versatility of the circuit breaker.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a schematic diagram of a use scenario of a circuit breaker according to an embodiment of the utility model;

[0031] Figure 2 is a front view of a circuit breaker according to an embodiment of the utility model;

[0032] Figure 3 is a cross-sectional view of a circuit breaker according to an embodiment of the utility model;

[0033] Figure 4 is a top view of a circuit breaker according to an embodiment of the utility model;

[0034] Figure 5 It is a left side view of a circuit breaker according to an embodiment of the utility model;

[0035] Figure 6 It is a structural schematic diagram of a piston of a circuit breaker according to an embodiment of the utility model;

[0036] Figure 7 It is a structural schematic diagram of a detonating device of a circuit breaker according to an embodiment of the utility model;

[0037] Figure 8 It is a schematic structural diagram of a short-circuit bar of a circuit breaker according to an embodiment of the utility model;

[0038] Fig. 9 It is a structural schematic diagram of a housing of a circuit breaker according to an embodiment of the utility model.

[0039] Reference numerals:

[0040] 100, circuit breaker; 200, load-bearing component; 210, weak part;

[0041] 10. Shell assembly; 11. Shell; 12. Injection molded part; 111. Opening; 112. Outlet; 113. Flanging; 114. Avoidance; 121. Main body; 122. Base; 123. Assembly; 124. Error prevention column; 125. Connection; 126. Connection hole; 127. Diversion part;

[0042] 20, piston; 21, first piston; 22, second piston; 23, sealing groove; 24, exhaust groove; 201, first section; 202, second section; 231, sealing ring; 241, first connecting section; 242, second connecting section; 243, third connecting section;

[0043] 30. Detonation device; 31. Gunpowder box; 32. Fuze;

[0044] 40. Short-circuit strip;

[0045] 51. first reinforcing rib; 52. second reinforcing rib;

[0046] 61. The first anti-error column; 62. The second anti-error column;

[0047] 71. first opening; 72. second opening;

[0048] 81. First inclined surface; 82. Second inclined surface. DETAILED DESCRIPTION

[0049] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them, the first feature "above", "above" and "above" the second feature may include the first feature being directly above and diagonally above the second feature, or may simply mean that the first feature is at a higher level than the second feature.

[0052] A circuit breaker 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0053] Reference Figure 1-Figure 5 As shown, the circuit breaker 100 according to the embodiment of the present invention may include: a housing assembly 10 , a piston 20 and an ignition device 30 .

[0054] Specifically, the housing assembly 10 includes a shell 11, which has an opening 111. The piston 20 is movably disposed in the shell 11, and the detonating device 30 is disposed in the shell 11. After the detonating device 30 is detonated, the explosive material inside the detonating device 30 will rapidly burn or explode, releasing huge energy. The energy rapidly diffuses in the shell 11 in the form of gas, and can drive part of the piston 20 to extend out of the shell 11 from the opening 111. The detonating device 30 provides power for the piston 20, so that the piston 20 can move quickly toward the direction of the load-bearing component 200 and cut off the load-bearing component 200, thereby disconnecting the power supply end connected to the load-bearing component 200 from the load end, thereby achieving the circuit disconnection effect of the circuit breaker 100.

[0055] In addition, if Figure 1-Figure 5As shown, the housing assembly 10 further includes an injection molded part 12, which fixedly connects the housing 11 and the detonating device 30. The injection molded part 12 can ensure that the detonating device 30 is reliably fixed on the housing assembly 10, effectively improving the connection strength, simplifying the process while ensuring the performance, making the manufacturing simple, realizing the integration of the circuit breaker 100, and having high production efficiency, which is conducive to reducing the manufacturing cost, and can reduce the assembly process, eliminate other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is conducive to realizing the versatility of the circuit breaker 100.

[0056] In the embodiment of the present invention, the piston 20 is arranged in the axial direction (eg Figure 3 The length of the piston 20 in the left and right directions (shown in the figure) can be set according to actual conditions. For example, the length of the piston 20 in the axial direction can be set according to the different circuit breaking requirements of the distance between the circuit breaker 100 and the load-bearing component 200, which can realize platformization, facilitate the adjustment of the circuit breaker 100, and realize the versatility of the circuit breaker 100.

[0057] It should be noted that, for the convenience of description, the directions such as "left and right directions" in the present invention are based on the directions shown in the drawings, but are not limitations on the directions in actual application.

[0058] In some embodiments, Figure 1 As shown, the end of the piston 20 away from the detonating device 30 is opposite to the weak portion 210 of the carrier 200, and the weak portion 210 is configured to be disconnected when hit. Therefore, after the detonating device 30 is detonated, the end of the piston 20 away from the detonating device 30 can cut off the weak portion 210, ensuring reliable cutting of the carrier 200 and ensuring the circuit breaking effect of the circuit breaker 100. For example, the weak portion 210 of the carrier 200 facing the piston 20 can be formed by cutting a part of the structure.

[0059] It should be noted that the shape of the housing 11 can be a cylinder, a cubic prism, a polygonal prism or the like, and the shape of the piston 20 is the same as that of the housing 11. When the shape of the piston 20 is a cubic prism or a polygonal prism, the radial direction of the piston 20 is the radial direction of a circle whose center is the center of a cross section perpendicular to the central axis of the piston 20.

[0060] In some embodiments, the housing 11, the detonating device 30 and the injection molded part 12 are integrally injection molded to ensure reliable connection, high production efficiency, and reduced production costs. For example, the housing 11 and the detonating device 30 are placed in an injection mold, and the injection molded part 12 is formed by an injection molding process to fix the housing 11 and the detonating device 30, ensuring that the housing 11 and the detonating device 30 are reliably fixed.

[0061] In some embodiments, the housing 11 may be a metal part, and the internal finish of the metal housing 11 is good, which facilitates the movement of the piston 20 in the housing 11, so that the piston 20 moves more smoothly, avoids problems such as jamming, and makes the circuit breaker 100 more reliable in disconnecting the circuit. For example, the housing 11 may be a seamless steel pipe.

[0062] In some embodiments, the piston 20 may be an injection molded part 12 , which facilitates processing and manufacturing of the piston 20 , can ensure the dimensional accuracy and consistency of the piston 20 , and can reduce production costs.

[0063] According to the circuit breaker 100 of the embodiment of the utility model, the shell 11 has an opening 111, the piston 20 is movably arranged in the shell 11, and the detonating device 30 is arranged in the shell 11. After the detonating device 30 is detonated, the part that drives the piston 20 extends out of the shell 11 from the opening 111. The detonating device 30 can provide power for the piston 20, so that the piston 20 can quickly move toward the direction of the load component 200 and cut off the load component 200, disconnecting the power supply end connected to the load component 200 from the load end, thereby achieving the circuit disconnection effect of the circuit breaker 100, and the injection molded part 12 fixes the shell 11 and the detonating device 30 to ensure that the detonating device 30 is reliably fixed on the shell assembly 10, effectively improving the connection strength, realizing the integration of the circuit breaker 100, which is beneficial to reducing the manufacturing cost, and reducing the volume of the circuit breaker 100, which is convenient for the circuit breaker 100 to be installed in a smaller space, which is beneficial to achieving the versatility of the circuit breaker 100.

[0064] In some embodiments of the present invention, Figure 1-Figure 5 As shown, the injection molded part 12 includes a main body 121, which covers at least a portion of the outer wall of the shell 11, so that the injection molded part 12 and the shell 11 can be reliably connected, and the main body 121 can protect the shell 11 from displacement, deformation or cracking under the energy of the detonation device 30, thereby preventing the piston 20 from being unable to cut off the carrier 200 due to damage to the shell 11.

[0065] In addition, if Figure 3 As shown, the injection molded part 12 also includes a base 122, which is located in the shell 11 and connected to the shell 11 to ensure that the base 122 is reliably fixed in the shell 11. At least part of the detonating device 30 is embedded in the base 122, which can fix the detonating device 30 and ensure the normal operation of the detonating device 30.

[0066] At the same time, the housing 11 and the detonating device 30 are fixedly connected by the main body 121 and the base 122, which can simplify the process while ensuring the performance, make the manufacturing simple, realize the integration of the circuit breaker 100, and make the production efficiency high, which is conducive to reducing the manufacturing cost, and reduces the assembly process, and can save other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is conducive to realizing the versatility of the circuit breaker 100.

[0067] According to some embodiments of the present invention, Figure 3 , Figure 7 and Fig. 9 As shown, the housing 11 is provided with a lead-out port 112, and the detonating device 30 includes a powder box 31 and a fuse 32. The powder box 31 is located in the housing 11, and the powder box 31 is at least partially embedded in the base 122, which can ensure that the powder box 31 is reliably fixed in the housing 11. One end of the fuse 32 is connected to the powder box 31, and the other end of the fuse 32 extends out of the housing 11 through the lead-out port 112. The base 122 is connected to the body 121 at the lead-out port 112. The lead-out port 112 facilitates the connection of the fuse 32 with the external structure, meets the required assembly requirements, and ensures that the detonating device 30 is reliably fixed on the housing 11. At the same time, the base 122 is used to fix the powder box 31 and the fuse 32, ensuring that the powder box 31 and the fuse 32 will not cause the detonating device 30 to explode or fail due to vibration, impact or other external forces during transportation or storage, thereby improving the reliability and safety of the circuit breaker 100. For example, the fuse 32 is a fusible bridge wire.

[0068] When the circuit breaker 100 is required to cut off the load-bearing component 200, the external control or triggering device acts on the fuse 32 so that the fuse 32 is activated and ignites the gunpowder in the gunpowder box 31, thereby releasing huge energy. This energy can push the piston 20 to move quickly toward the load-bearing component 200 and cut off the load-bearing component 200, thereby achieving the circuit disconnecting effect of the circuit breaker 100.

[0069] In the embodiment of the utility model, the amount of gunpowder in the gunpowder box 31 can be set according to actual conditions. For example, the amount of gunpowder in the gunpowder box 31 can be set according to the circuit breaking requirements of different cutting forces of the circuit breaker 100, which can achieve platformization, facilitate adjustment of the circuit breaker 100, and achieve the versatility of the circuit breaker 100.

[0070] In some embodiments, the detonating device 30 is controlled by an electrical signal. When receiving an electrical signal requiring the circuit breaker 100 to cut off the load-bearing component 200, the small current passed into the fuse 32 can be converted into a large current, so that the fuse 32 heats up and ignites, thereby enabling the fuse 32 to ignite the gunpowder in the gunpowder box 31, thereby realizing the detonation of the detonating device 30, thereby facilitating the control of the detonating device 30.

[0071] In some embodiments of the present invention, Figure 1-Figure 5 , Figure 8 As shown, the injection molded part 12 also includes an assembly portion 123, which is arranged outside the main body 121 and connected to the main body 121. The end of the fuze 32 that is away from the gunpowder box 31 extends into the assembly portion 123. A short-circuit bar 40 is provided in the assembly portion 123, and the short-circuit bar 40 cooperates with the fuze 32. Therefore, the fuze 32 and the short-circuit bar 40 can form a loop through the short-circuit bar 40, thereby preventing the risk of the detonation device 30 being ignited due to static electricity, ensuring the transportation reliability of the circuit breaker 100, and facilitating the transportation of the circuit breaker 100. In addition, the assembly portion 123 can provide a stable installation space for the fuze 32 and the short-circuit bar 40, ensuring that the short-circuit bar 40 and the fuze 32 cooperate reliably, thereby ensuring the safety of the circuit breaker 100.

[0072] At the same time, the housing 11 and the detonating device 30 are fixedly connected by the main body 121, the base 122 and the assembly portion 123, which can simplify the process while ensuring the performance, make the manufacturing simple, realize the integration of the circuit breaker 100, and make the production efficiency high, which is conducive to reducing the manufacturing cost, and reduces the assembly process, can omit other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is conducive to realizing the versatility of the circuit breaker 100.

[0073] It is understandable that the “short-circuit bar 40 ” is well known to those skilled in the art and will not be described in detail herein.

[0074] In some embodiments, after the circuit breaker 100 is assembled, the shorting bar 40 is finally placed in the assembly portion 123 to avoid damage to the shorting bar 40 , ensure that the shorting bar 40 and the fuse 32 cooperate reliably, and ensure the safety of the circuit breaker 100 .

[0075] According to some embodiments of the present invention, Figure 1-Figure 5 As shown, the injection molded part 12 includes a first reinforcing rib 51, which connects the outer peripheral wall of the assembly part 123 and the outer wall surface of the main body 121. The first reinforcing rib 51 can improve the structural strength of the assembly part 123 and the main body 121, thereby improving the structural strength of the injection molded part 12, so that the circuit breaker 100 can better resist deformation and damage when impacted, avoid problems such as breakage of the circuit breaker 100, and ensure safety in use.

[0076] At the same time, the main body 121, the base 122, the assembly portion 123 and the first reinforcing rib 51 are formed into an injection molded part 12, which can simplify the process while ensuring the performance, making the manufacturing simple, realizing the integration of the circuit breaker 100, and making the production efficiency high, which is beneficial to reducing the manufacturing cost, and reducing the assembly process, which can save other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is beneficial to realize the versatility of the circuit breaker 100.

[0077] In the embodiment of the present utility model, the size of the first reinforcing rib 51 can be set according to actual conditions. For example, the size of the first reinforcing rib 51 can be set according to different cutting forces of the circuit breaker 100 to ensure the structural strength of the circuit breaker 100.

[0078] In some embodiments, Figure 1-Figure 5 As shown, there may be multiple first reinforcing ribs 51, and the multiple first reinforcing ribs 51 are spaced apart along the circumferential direction of the assembly portion 123. The multiple first reinforcing ribs 51 can improve the structural strength of multiple different positions of the assembly portion 123, thereby improving the structural strength of the injection molded part 12.

[0079] In the embodiment of the present invention, the number of the first reinforcing ribs 51 can be flexibly set according to actual conditions. For example, the first reinforcing ribs 51 can be as follows: Figure 2 Two are shown, but three, four, five, six or more may also be provided, all of which are within the protection scope of the present utility model.

[0080] In some embodiments of the present invention, Figure 2 , Figure 3 and Figure 5 As shown, the injection molded part 12 includes an anti-error column 124, which is connected to the body 121 and is used to limit the direction of the circuit breaker 100. Therefore, when the circuit breaker 100 is installed, the anti-error column 124 can ensure that the circuit breaker 100 is accurately aligned with the installation position, avoiding problems such as affecting subsequent installation or use due to incorrect installation direction, which is conducive to improving assembly efficiency.

[0081] At the same time, the main body 121, the base 122 and the anti-error column 124 are formed into an injection molded part 12, which can simplify the process while ensuring the performance, making the manufacturing simple, realizing the integration of the circuit breaker 100, and making the production efficiency high, which is beneficial to reducing the manufacturing cost, and reducing the assembly process, which can save other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is beneficial to realize the versatility of the circuit breaker 100.

[0082] In the embodiment of the present utility model, the specific structure of the error prevention column 124 can be set according to the actual situation. For example, the error prevention column 124 can limit the direction of the circuit breaker 100 through different shapes and numbers.

[0083] For example, in some embodiments, Figure 1 and Figure 3 As shown, the error prevention column 124 includes a first error prevention column 61 and a second error prevention column 62. The first error prevention column 61 is located in the length direction (eg Figure 3 The second error prevention column 62 is located at the middle of the first error prevention column 61 along the length direction of the housing 11. Therefore, the direction of the circuit breaker 100 can be limited by the combination of the first error prevention column 61 and the second error prevention column 62, ensuring accurate and reliable positioning, improving the convenience and accuracy of installation, and the structure of the error prevention column 124 is simple, which is easy to process and manufacture, and is conducive to reducing production costs.

[0084] According to some embodiments of the present invention, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the injection molded part 12 includes a connection portion 125, the connection portion 125 is located outside the body portion 121, and the connection portion 125 is connected to the body portion 121. The connection portion 125 is provided with a connection hole 126, so that the fastener can be inserted into the connection hole 126 to achieve installation and fixation of the circuit breaker 100, ensuring that the circuit breaker 100 is fixed reliably. At the same time, the body portion 121, the base 122 and the connection portion 125 are formed into the injection molded part 12, which can simplify the process while ensuring the performance, making the manufacturing simple, realizing the integration of the circuit breaker 100, making the production efficiency high, and helping to reduce the manufacturing cost, and reducing the assembly process, and can save other assembly structures, reducing the volume of the circuit breaker 100, making it easy to install the circuit breaker 100 in a small space, and helping to achieve the versatility of the circuit breaker 100. For example, the fastener can be a screw, etc.

[0085] In some embodiments, Figure 4 As shown, there are two connecting parts 125, which are respectively located at the two ends of the length direction of the shell 11, and the two connecting parts 125 are located on the opposite sides of the main body 121. The two connecting parts 125 can ensure that the circuit breaker 100 is reliably fixed to avoid problems such as deflection, thereby ensuring that the circuit breaker 100 disconnects the circuit more reliably.

[0086] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the injection molded part 12 includes a second reinforcing rib 52, which connects the connecting part 125 and the outer wall surface of the main body 121. The second reinforcing rib 52 can improve the structural strength of the connecting part 125 and the main body 121, thereby improving the structural strength of the injection molded part 12, so that the circuit breaker 100 can better resist deformation and damage when impacted, avoid problems such as breakage of the circuit breaker 100, and ensure safety in use.

[0087] At the same time, the main body 121, the base 122, the assembly portion 123 and the second reinforcing rib 52 are formed into an injection molded part 12, which can simplify the process while ensuring the performance, making the manufacturing simple, realizing the integration of the circuit breaker 100, and making the production efficiency high, which is beneficial to reducing the manufacturing cost, and reducing the assembly process, which can save other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is beneficial to realize the versatility of the circuit breaker 100.

[0088] In the embodiment of the present invention, the size of the second reinforcing rib 52 can be set according to actual conditions. For example, the size of the second reinforcing rib 52 can be set according to different cutting forces of the circuit breaker 100 to ensure the structural strength of the circuit breaker 100.

[0089] In some embodiments, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, there may be multiple second reinforcing ribs 52, and the multiple second reinforcing ribs 52 are spaced apart along the circumferential direction of the connecting portion 125. The multiple second reinforcing ribs 52 can improve the structural strength of multiple different positions of the connecting portion 125, thereby improving the structural strength of the injection molded part 12.

[0090] In the embodiment of the present invention, the number of the second reinforcing ribs 52 can be flexibly set according to actual conditions. For example, the second reinforcing ribs 52 can be as follows: Figure 2 Two are shown, but three, four, five, six or more may also be provided, all of which are within the protection scope of the present utility model.

[0091] According to some embodiments of the present invention, Figure 3 As shown, there can be multiple openings 111, and there can be multiple pistons 20, and the multiple pistons 20 correspond one to one with the multiple openings 111. Therefore, after the detonation device 30 is detonated, the detonation device 30 can simultaneously drive the multiple pistons 20 to move quickly out of the corresponding openings 111 and cut off the corresponding load-bearing components 200, thereby realizing the multi-directional drive output of the circuit breaker 100 and meeting the required use requirements.

[0092] In some embodiments of the present invention, Figure 3As shown, the plurality of openings 111 include a first opening 71 and a second opening 72, the first opening 71 and the second opening 72 are respectively located at the two ends of the length direction of the housing 11, the plurality of pistons 20 include a first piston 21 and a second piston 22, the first piston 21 is opposite to the first opening 71, the second piston 22 is opposite to the second opening 72, and the detonating device 30 is located between the first piston 21 and the second piston 22. Thus, after the detonating device 30 is detonated, the detonating device 30 can simultaneously drive the first piston 21 and the second piston 22 to move quickly and extend from the first opening 71 and the second opening 72 respectively and cut off the corresponding carrier 200, thereby realizing the bidirectional synchronous drive output of the circuit breaker 100. At the same time, the detonating device 30 is located between the first piston 21 and the second piston 22, ensuring that the detonating device 30 can effectively drive the piston 20 to move and complete the function of the circuit breaker 100.

[0093] In some embodiments, Figure 1 As shown, the load-bearing component 200 is used to connect the motor and the motor controller, the motor controller is connected to the battery, the motor is powered by the battery, there are three load-bearing components 200, and the load-bearing component 200 is a copper bar in the three-phase alternating current. When the detonating device 30 is not detonated, the load-bearing component 200 is not disconnected, and the load-bearing component 200 can be normally powered, ensuring that the circuits between the battery, the motor controller and the motor are connected, so that the motor works normally.

[0094] When the current is abnormal and the detonator 30 is detonated, the detonator 30 can simultaneously drive the first piston 21 and the second piston 22 to move quickly and extend from the first opening 71 and the second opening 72 respectively, so that the piston 20 can simultaneously cut off the two copper bars in the three-phase AC power, thereby cutting off the circuit between the battery and the motor, and disconnecting the three-phase AC power between the motor controller and the motor, avoiding the risk of combustion and fire caused by the motor dragging a large current after a short circuit, effectively protecting the motor, thereby preventing serious battery accidents, and effectively improving the safety of use.

[0095] In some embodiments, the circuit breaker 100 is located inside the motor controller to ensure a compact structure, which is beneficial to reducing the occupied space. The internal space of the motor controller is small, and the housing 11 and the detonator 30 are fixedly connected by the injection molding part 12, which can eliminate other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which can meet the required installation requirements.

[0096] According to some embodiments of the present invention, Figure 3As shown, the injection molded part 12 includes a guide portion 127, which is disposed in the housing 11. The guide portion 127 is located between the first piston 21 and the second piston 22, and the guide portion 127 is opposite to the detonating device 30. The guide portion 127 can improve the structural strength of the housing 11, and avoid the detonating device 30 from directly impacting the housing 11 after detonation, which is beneficial to improving the structural strength of the circuit breaker 100.

[0097] In addition, if Figure 3 As shown, the side of the guide portion 127 facing the detonating device 30 has a first inclined surface 81 and a second inclined surface 82, and the first inclined surface 81 and the second inclined surface 82 are arranged along the length direction of the housing 11, and in the direction away from the detonating device 30 (for example Figure 3 In the direction from top to bottom as shown in FIG, the first inclined surface 81 and the second inclined surface 82 are inclined in directions away from each other.

[0098] When the detonating device 30 is detonated, the gas generated by the detonating device 30 can be dispersed and guided along the first inclined surface 81 and the second inclined surface 82, so as to drive the first piston 21 and the second piston 22 to extend from the first opening 71 and the second opening 72 respectively, thereby avoiding the problem of energy rebound reducing the driving force of the first piston 21 and the second piston 22, ensuring reliable driving of the first piston 21 and the second piston 22, and reducing damage to other parts caused by energy, which is beneficial to improving the reliability and durability of the circuit breaker 100.

[0099] At the same time, by making the guide portion 127 a part of the injection molded part 12, the process can be simplified while ensuring the performance, making the manufacturing simple, realizing the integration of the circuit breaker 100, and improving the production efficiency, which is beneficial to reducing the manufacturing cost, and reducing the assembly process, which can save other assembly structures, reduce the volume of the circuit breaker 100, and facilitate the installation of the circuit breaker 100 in a smaller space, which is beneficial to realizing the versatility of the circuit breaker 100.

[0100] In some embodiments of the present invention, Figure 3 As shown, the two ends of the guide portion 127 along the length direction of the housing 11 are respectively against the first piston 21 and the second piston 22, which can realize the positioning of the first piston 21 and the second piston 22 in the housing 11, ensure that the first piston 21 and the second piston 22 are installed in place, which is beneficial to improve the assembly efficiency and ensure the structural stability and integrity of the circuit breaker 100.

[0101] According to some embodiments of the present invention, Figure 3 and Figure 6As shown, the piston 20 has a sealing groove 23 on its circumferential wall, and the sealing groove 23 extends along the circumferential direction of the piston 20. The circuit breaker 100 also includes a sealing ring 231, which is located in the sealing groove 23 and is sealed and connected to the housing 11, that is, the outer circumferential wall of the sealing ring 231 and the inner circumferential wall of the housing 11 are interference-fitted, and the sealing ring 231 can play a role in sealing and maintaining pressure. Therefore, after the detonating device 30 is detonated, the sealing and maintaining pressure of the sealing ring 231 can prevent the gas generated by the detonating device 30 from flowing out of the gap between the piston 20 and the housing 11, ensuring that the piston 20 cuts off the load-bearing component 200 under the action of the energy generated by the detonating device 30, and ensuring the power-off effect of the circuit breaker 100.

[0102] In some embodiments, the seal has an interference fit with the groove wall of the sealing groove 23, ensuring that the seal is securely fixed in the sealing groove 23, avoiding problems such as detachment, and preventing gas from flowing out of the gap between the seal and the sealing groove 23, ensuring that the sealing and pressure-maintaining function of the seal is reliable.

[0103] In some embodiments, Figure 3 As shown, the outer wall of the piston 20 and the inner wall of the housing 11 are clearance-matched, which makes it easy to install the piston 20 in the housing 11, can reduce assembly resistance, is conducive to improving assembly efficiency, and avoids problems such as deformation caused by wear between the outer wall of the piston 20 and the inner wall of the housing 11, thereby ensuring reliable operation of the circuit breaker 100.

[0104] In some embodiments, the sealing ring 231 may be an injection molded part 12 , which facilitates processing and manufacturing of the sealing ring 231 and helps reduce production costs.

[0105] The inventor of the present application discovered that the piston 20 can be assembled by sleeve-mounting the sealing ring 231 in the sealing groove 23 and then pushing the piston 20 into the housing 11. However, since the sealing ring 231 is sealedly connected to the housing 11, the piston 20 is difficult to assemble, which affects the assembly efficiency.

[0106] Therefore, in some embodiments of the present invention, Figure 6 As shown, an exhaust groove 24 is provided on the inner wall of the sealing groove 23, and the exhaust groove 24 includes a first connecting section 241, a second connecting section 242 and a third connecting section 243. The first connecting section 241 is provided on the bottom wall of the sealing groove 23, and the first connecting section 241 is provided along the axial direction of the piston 20 (for example Figure 3The second connecting section 242 and the third connecting section 243 are respectively arranged on the two opposite side walls of the sealing groove 23, and the second connecting section 242 and the third connecting section 243 are connected with the first connecting section 241. The ends of the second connecting section 242 and the third connecting section 243 away from the first connecting section 241 extend to the outer peripheral wall of the piston 20. The exhaust groove 24 has a simple structure, which is convenient for realizing the connection of the spaces on both sides of the axial direction of the piston 20 and convenient for processing and manufacturing the exhaust groove 24.

[0107] When the piston 20 is installed on the housing 11, the gas between one side of the piston 20 and the housing 11 can be discharged to the other side of the axial direction of the piston 20 through the exhaust groove 24, avoiding excessive pressure or resistance, ensuring that the piston 20 is easy to install, reducing the difficulty of installation, and improving assembly efficiency. At the same time, after the detonating device 30 detonates and drives the piston 20 to extend out of the housing 11 from the opening 111, the gas generated by the detonating device 30 between one side of the piston 20 and the housing 11 can be discharged to the other side of the axial direction of the piston 20 through the exhaust groove 24, which can release the internal pressure, avoid the problem of large internal pressure causing damage to the housing 11, and is conducive to ensuring the safety of the circuit breaker 100.

[0108] According to some embodiments of the present invention, Figure 3 and Figure 6 As shown, the piston 20 includes a first section 201 and a second section 202, one end of the second section 202 is connected to the end of the first section 201 away from the detonating device 30, along the radial direction of the piston 20, the radial length of the first section 201 is greater than the aperture of the opening 111, and along the radial direction of the piston 20, the radial length of the second section 202 is less than the aperture of the opening 111, and after the detonating device 30 is detonated, at least part of the second section 202 extends out of the housing 11 from the opening 111. Therefore, after the detonating device 30 is detonated, it can be ensured that at least part of the second end extends out of the opening 111, so that the piston 20 cuts off the carrier 200, and the first section 201 is prevented from extending out of the opening 111, so that the displacement of the piston 20 can be limited, so as to prevent the piston 20 from being dislodged as a whole and causing safety hazards, and ensure the safety of the circuit breaker 100.

[0109] In some embodiments, Figure 3 and Figure 6 As shown, the sealing groove 23 is arranged on the first section 201 , which can ensure the sealing effect of the sealing ring 231 , prevent the gas generated by the detonating device 30 from leaking from the gap between the first section 201 and the housing 11 , and facilitate the processing and manufacturing of the sealing groove 23 .

[0110] In some embodiments of the present invention, Figure 3As shown, at least one end of the shell 11 in the length direction is provided with a flange 113, and the flange 113 is bent along the axial direction close to the shell 11, and the inner peripheral wall of the flange 113 defines an opening 111. The flange 113 can improve the structural strength of the shell 11 and reduce the radial size of the opening 111 formed at least one end of the shell 11 in the length direction, thereby preventing the piston 20 from escaping from the opening 111 when moving toward the opening 111 and causing safety hazards, thereby ensuring the safety of the circuit breaker 100.

[0111] In some embodiments, after the piston 20 is installed in the housing 11, at least one end of the housing 11 in the length direction is bent along the axial direction close to the housing 11 through a riveting process to form a flange 113, which facilitates the processing and manufacturing of the flange 113 and helps reduce production costs.

[0112] According to some embodiments of the present invention, Fig. 9 As shown, an avoidance opening 114 is provided on the flange 113. When the flange 113 is bent along the axial direction close to the shell 11, the avoidance opening 114 can avoid the accumulation of thick materials, ensure the processing reliability, meet the required processing and manufacturing requirements, and can reduce the weight of the shell 11, which is conducive to reducing production costs.

[0113] In some embodiments of the utility model, a recessed portion is provided on the end surface of the piston 20 facing the detonating device 30, and the recessed portion is recessed away from the detonating device 30. The recessed portion can increase the internal volume between the end of the piston 20 provided with the recessed portion and the outer shell 11, thereby avoiding problems such as excessive internal pressure caused by excessive energy of the detonating device 30 after the detonating device 30 is detonated. It can be set according to different usage conditions to meet different usage requirements, and is convenient for processing and manufacturing the piston 20, which is beneficial to reducing production costs.

[0114] The power assembly according to the embodiment of the utility model includes a motor, a motor controller and a circuit breaker 100 according to the embodiment of the utility model. The motor and the motor controller are connected through a load-bearing component 200. When the detonating device 30 is not detonated, the load-bearing component 200 is not disconnected, and the load-bearing component 200 can be energized normally, ensuring that the circuit between the motor controller and the motor is connected, so that the motor can work normally.

[0115] In addition, the circuit breaker 100 can disconnect the load-bearing component 200, that is, when the current is abnormal and the detonating device 30 is detonated, the detonating device 30 can drive the piston 20 to move quickly and extend out of the housing 11 from the opening 111, so that the piston 20 can disconnect the load-bearing component 200, thereby cutting off the circuit between the motor and the motor controller, effectively protecting the motor and ensuring safety of use.

[0116] Since the circuit breaker 100 according to the embodiment of the utility model has the above-mentioned beneficial technical effects, the power assembly according to the embodiment of the utility model has an opening 111 through the shell 11, the piston 20 is movably arranged in the shell 11, and the detonating device 30 is arranged in the shell 11. After the detonating device 30 is detonated, the part that drives the piston 20 extends out of the shell 11 from the opening 111. The detonating device 30 can provide power for the piston 20, so that the piston 20 can quickly move toward the direction of the load component 200 and cut off the load component 200, disconnect the power supply end connected to the load component 200 from the load end, and achieve the circuit disconnection effect of the circuit breaker 100, and the injection molded part 12 fixes the shell 11 and the detonating device 30 to ensure that the detonating device 30 is reliably fixed on the shell assembly 10, effectively improves the connection strength, can realize the integration of the circuit breaker 100, is conducive to reducing the manufacturing cost, and can reduce the volume of the circuit breaker 100, which is convenient for the circuit breaker 100 to be installed in a smaller space, which is conducive to achieving the versatility of the circuit breaker 100.

[0117] Other structures and operations of the circuit breaker 100 and the power assembly according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here.

[0118] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] In the description of this specification, the description with reference to the terms "embodiment", "specific embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0120] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A circuit breaker, characterized in that: include: A housing assembly (10), the housing assembly (10) comprising a housing (11) and an injection molded part (12), the housing (11) having an opening (111); a piston (20), the piston (20) being movably disposed in the housing (11); an ignition device (30), the ignition device (30) being arranged in the housing (11), and driving a portion of the piston (20) to extend out of the housing (11) from the opening (111) after the ignition device (30) is ignited, The injection molded part (12) fixedly connects the housing (11) and the detonating device (30).

2. The circuit breaker according to claim 1, characterized in that: The injection molded part (12) comprises: A main body (121), the main body (121) covering at least a portion of an outer wall surface of the outer shell (11); A base (122), the base (122) is located in the shell (11) and connected to the shell (11), and at least a portion of the detonating device (30) is embedded in the base (122).

3. The circuit breaker according to claim 2, characterized in that: The housing (11) is provided with a lead-out port (112), and the detonation device (30) comprises: A powder box (31), the powder box (31) is located in the housing (11) and is at least partially embedded in the base (122); A fuse (32), one end of the fuse (32) is connected to the powder box (31), and the other end passes through the outlet (112) and extends out of the housing (11), and the base (122) is connected to the main body (121) at the outlet (112).

4. The circuit breaker according to claim 3, characterized in that: The injection molded part (12) further comprises: An assembly part (123) is arranged outside the main body (121) and connected to the main body (121), and one end of the fuze (32) facing away from the powder box (31) extends into the assembly part (123), and a short-circuit strip (40) matching the fuze (32) is arranged in the assembly part (123).

5. The circuit breaker according to claim 4, characterized in that: The injection molded part (12) comprises: A first reinforcing rib (51), wherein the first reinforcing rib (51) connects the outer peripheral wall of the assembly portion (123) and the outer wall surface of the main body portion (121).

6. The circuit breaker according to claim 2, characterized in that: The injection molded part (12) comprises: An anti-error column (124), the anti-error column (124) is connected to the main body (121) and is used to limit the direction of the circuit breaker (100).

7. The circuit breaker according to claim 6, characterized in that: The error-proofing column (124) comprises: A first error prevention column (61) and a second error prevention column (62), wherein the first error prevention column (61) is located in the middle of the shell (11) in the length direction, and the second error prevention column (62) is located at one end of the first error prevention column (61) along the length direction of the shell (11).

8. The circuit breaker according to claim 2, characterized in that: The injection molded part (12) comprises: A connecting portion (125), the connecting portion (125) is located outside the main body portion (121) and connected to the main body portion (121), and a connecting hole (126) is provided on the connecting portion (125).

9. The circuit breaker according to claim 8, characterized in that The injection molded part (12) comprises: A second reinforcing rib (52), wherein the second reinforcing rib (52) connects the connecting portion (125) and an outer wall surface of the main body portion (121).

10. The circuit breaker according to claim 1, characterized in that There are a plurality of openings (111), and a plurality of pistons (20), and the plurality of pistons (20) correspond one-to-one to the plurality of openings (111).

11. The circuit breaker according to claim 10, characterized in that The plurality of openings (111) include a first opening (71) and a second opening (72), wherein the first opening (71) and the second opening (72) are respectively located at two ends of the length direction of the housing (11); the plurality of pistons (20) include a first piston (21) opposite to the first opening (71) and a second piston (22) opposite to the second opening (72); and the detonating device (30) is located between the first piston (21) and the second piston (22).

12. The circuit breaker according to claim 11, characterized in that The injection molded part (12) comprises a flow guide (127) disposed in the housing (11); the flow guide (127) is located between the first piston (21) and the second piston (22) and is opposite to the detonating device (30); a side of the flow guide (127) facing the detonating device (30) comprises a first inclined surface (81) and a second inclined surface (82) arranged along the length direction of the housing (11); the first inclined surface (81) and the second inclined surface (82) are inclined in a direction away from the detonating device (30) and in a direction away from each other.

13. The circuit breaker according to claim 12, characterized in that: Two ends of the guide portion (127) along the length direction of the housing (11) respectively abut against the first piston (21) and the second piston (22).

14. The circuit breaker according to claim 1, characterized in that The circumferential wall of the piston (20) is provided with a sealing groove (23) extending in the circumferential direction of the piston (20), and the circuit breaker (100) further comprises: A sealing ring (231), the sealing ring (231) is located in the sealing groove (23) and is sealedly connected to the housing (11).

15. The circuit breaker according to claim 14, characterized in that An exhaust groove (24) is provided on the inner wall of the sealing groove (23), and the exhaust groove (24) comprises: A first communication section (241), the first communication section (241) being arranged on the bottom wall of the sealing groove (23) and extending along the axial direction of the piston (20); A second communicating section (242) and a third communicating section (243), wherein the second communicating section (242) and the third communicating section (243) are respectively arranged on two opposite side walls of the sealing groove (23) and are connected to the first communicating section (241), and one end of the second communicating section (242) and the third communicating section (243) away from the first communicating section (241) extends to the outer peripheral wall of the piston (20).

16. The circuit breaker according to claim 1, characterized in that The piston (20) comprises: A first section (201), along the radial direction of the piston (20), wherein the radial length of the first section (201) is greater than the aperture of the opening (111); A second section (202), one end of which is connected to an end of the first section (201) facing away from the detonating device (30); along the radial direction of the piston (20), a radial length of the second section (202) is smaller than the aperture of the opening (111); after the detonating device (30) is detonated, at least a portion of the second section (202) extends out of the housing (11) from the opening (111).

17. The circuit breaker according to claim 1, characterized in that At least one end of the shell (11) in the length direction is provided with a flange (113) bent in a direction close to the axis of the shell (11), and the inner peripheral wall of the flange (113) defines the opening (111).

18. The circuit breaker according to claim 17, characterized in that The flange (113) is provided with an escape opening (114).

19. The circuit breaker according to claim 1, characterized in that The end surface of the piston (20) facing the detonating device (30) is provided with a concave portion which is concave away from the detonating device (30).

20. A powertrain, characterized in that: include: A motor and a motor controller, wherein the motor and the motor controller are connected via a load-bearing component (200); The circuit breaker (100) according to any one of claims 1 to 19, wherein the circuit breaker (100) is used to disconnect the load-carrying component (200).

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