Arc extinguishing chamber and energized fuse

Abstract

The application provides an arc-extinguishing chamber and an excited fuse, wherein the arc-extinguishing chamber comprises an arc-extinguishing chamber body and a cover plate, the arc-extinguishing chamber body is provided with a first groove, the first groove is provided with a first partition, and the first partition divides the first groove into a second groove and a third groove; the cover plate is provided with a fourth groove, the fourth groove is provided with a second partition, and the second partition divides the fourth groove into a fifth groove and a sixth groove; the first partition comprises a first fuse area, a first platform and a second platform; the second partition comprises a second fuse area, a third platform and a fourth platform; when the cover plate is covered on the first groove of the arc-extinguishing chamber, the first platform and the third platform form a first arc-extinguishing chamber, and the second platform and the fourth platform form a second arc-extinguishing chamber; and the first arc-extinguishing chamber and the second arc-extinguishing chamber are both filled with arc-extinguishing medium.

Description

Technical Field

[0001] This application belongs to the technical field of emergency protection devices, specifically relating to an arc-extinguishing chamber and an excitation fuse. Background Technology

[0002] An excitation fuse is a rapid protection device that uses an electronic gas generator to push an insulator to cut the conductor and form a physical break in a short time.

[0003] Currently, in existing energized fuses, the arc-extinguishing chamber is sealed by a cover plate, and the cavity between the arc-extinguishing chamber and the cover plate is filled with an arc-extinguishing medium. Although the arc-extinguishing chamber and the cover plate are fastened together, some gaps still exist, and these gaps are not filled with an arc-extinguishing medium. When an arc is generated in the arc-extinguishing chamber, the arc may form a path through the gap, increasing the arc-extinguishing time and thus affecting the arc-extinguishing efficiency. Utility Model Content

[0004] This application provides an arc-extinguishing chamber and an excitation fuse, aiming to improve the arc-extinguishing efficiency of the excitation fuse.

[0005] In a first aspect, this application provides an arc-extinguishing chamber, including an arc-extinguishing chamber body and a cover plate. The arc-extinguishing chamber body is provided with a first groove, and the first groove is provided with a first partition, which divides the first groove into a second groove and a third groove.

[0006] The cover plate is provided with a fourth groove, and the fourth groove is provided with a second partition, which divides the fourth groove into a fifth groove and a sixth groove.

[0007] The first partition includes a first fusible region, a first platform, and a second platform; the second partition includes a second fusible region, a third platform, and a fourth platform.

[0008] When the cover plate is placed on the first groove of the arc-extinguishing chamber, the first platform and the third platform form the first arc-extinguishing chamber, and the second platform and the fourth platform form the second arc-extinguishing chamber.

[0009] Both the first and second arc-extinguishing cavities are filled with arc-extinguishing media.

[0010] In conjunction with the first aspect, in one possible embodiment, when the cover plate is placed on the first groove of the arc-extinguishing chamber body, the second groove and the fifth groove form a third arc-extinguishing chamber, and the third groove and the sixth groove form a fourth arc-extinguishing chamber; both the third and fourth arc-extinguishing chambers are filled with an arc-extinguishing medium.

[0011] In conjunction with the first aspect, in one possible embodiment, the first fusible region includes a plurality of first partitions, each of which is connected at both ends to the first platform and the second platform, respectively; at least one first fixing member is provided on the first partition, at least one first mating part is provided on the cover plate, and the excitation fuse includes a fusible element; the first mating part cooperates with the first fixing member to clamp the fusible element between the first partition and the second partition.

[0012] In conjunction with the first aspect, in one possible embodiment, a first through hole is provided between every two first separators, a first cut-off member is provided in the first through hole, and at least one second fixing member is provided on the first cut-off member; the second fixing member is used to fix the melt.

[0013] In conjunction with the first aspect, in one possible embodiment, at least one first connector extends from a first side of the first cutting member, and at least one second connector extends from a second side of the first cutting member; the at least one first connector is connected to a first hole wall of the first through hole, and the at least one second connector is connected to a second hole wall of the first through hole.

[0014] In conjunction with the first aspect, in one possible embodiment, the energized fuse includes a second cutting element, the second cutting element having at least one second mating portion; the second mating portion cooperates with the second fixing element to clamp the molten material between the second cutting element and the first cutting element.

[0015] In conjunction with the first aspect, in one possible embodiment, the first platform is provided with at least one first blocking member, which is disposed on the connection boundary between the first platform and the first fusion region and contacts the first cutting member and / or the second cutting member; the cover plate is provided with at least one first protrusion that cooperates with the at least one first blocking member; the second platform is provided with at least one second blocking member, which is disposed on the connection boundary between the second platform and the first fusion region and contacts the first cutting member and / or the second cutting member; the cover plate is provided with a second protrusion that cooperates with the at least one second blocking member.

[0016] In conjunction with the first aspect, in one possible embodiment, the first blocking member includes a first limiting portion, and the first protrusion cooperates with the first limiting portion to connect the first blocking member to the cover plate; the second blocking member is provided with a second limiting portion, and the second protrusion cooperates with the second limiting portion to connect the second blocking member to the cover plate.

[0017] In conjunction with the first aspect, in one possible embodiment, the second cutting member is provided with a third connecting member and a fourth connecting member, the first blocking member is provided with a fifth platform adapted to the shape of the third connecting member, and the second blocking member is provided with a sixth platform adapted to the shape of the fourth connecting member; the third connecting member is placed on the fifth platform, and the fourth connecting member is placed on the sixth platform; when the cover plate is engaged with the first blocking member and the second blocking member respectively through the first protrusion and the second protrusion, the end of the hole wall of the fourth through hole presses against the third connecting member and the fourth connecting member respectively.

[0018] Secondly, this application provides an excitation fuse, including a fusible element and the arc-extinguishing chamber described in the first aspect, wherein the fusible element is disposed in the arc-extinguishing chamber.

[0019] As can be seen, in this application, the arc-extinguishing chamber includes an arc-extinguishing chamber body and a cover plate. The arc-extinguishing chamber body has a first groove, and the first groove has a first partition portion that divides the first groove into a second groove and a third groove. The cover plate has a fourth groove, and the fourth groove has a second partition portion that divides the fourth groove into a fifth groove and a sixth groove. The first partition portion includes a first fusing region, a first platform, and a second platform. The second partition portion includes a second fusing region, a third platform, and a fourth platform. When the cover plate is placed over the first groove of the arc-extinguishing chamber, the first platform and the third platform form a first arc-extinguishing cavity, and the second platform and the fourth platform form a second arc-extinguishing cavity. Both the first and second arc-extinguishing cavities are filled with an arc-extinguishing medium. Thus, by setting platforms on the partition portions, the arc-extinguishing chamber body and the cover plate are fastened together to form an arc-extinguishing cavity, and the arc-extinguishing medium is filled in the arc-extinguishing cavity, quickly extinguishing the circuit and improving the arc-extinguishing efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an explosion diagram of the arc-extinguishing chamber provided in the embodiments of this application;

[0022] Figure 2 This is a first-view structural schematic diagram of the arc-extinguishing chamber body provided in the embodiments of this application;

[0023] Figure 3This is a schematic diagram of the arc-extinguishing chamber body from a second perspective, provided in an embodiment of this application.

[0024] Figure 4 This is a schematic diagram of another embodiment of the arc-extinguishing chamber body provided in this application.

[0025] Figure 5 This is a schematic diagram of the structure of the cover plate provided in the embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the structure of the second cutting member provided in an embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the structure of the blocking member provided in the embodiment of this application;

[0028] Figure 8 This is a schematic diagram of the structure of the melt provided in the embodiments of this application;

[0029] Figure 9 This is a schematic diagram of the overall structure of the arc-extinguishing chamber provided in the embodiments of this application. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0031] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, systems, products, or apparatuses.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] The following is an introduction to the relevant terminology used in this application.

[0034] Excited fuse: Under normal operation, current flows through the current busbar of the excited fuse. The busbar has low resistance and strong withstand capability for inrush current. When an overload or short-circuit fault occurs, external control sends an external excitation to the excited fuse. The resulting high-pressure gas or other impact force pushes the internal breaking element of the excited fuse to quickly break the copper busbar, thereby interrupting the short-circuit current. The excited fuse relies on a fault current detection device to avoid false tripping during normal overloads while ensuring rapid current interruption in the event of a real fault.

[0035] Currently, in existing energized fuses, the arc-extinguishing chamber is sealed by a cover plate, and the cavity between the arc-extinguishing chamber and the cover plate is filled with an arc-extinguishing medium. Although the arc-extinguishing chamber and the cover plate are fastened together, some gaps still exist, and these gaps are not filled with an arc-extinguishing medium. When an arc is generated in the arc-extinguishing chamber, the arc may form a path through the gap, increasing the arc-extinguishing time and thus affecting the arc-extinguishing efficiency.

[0036] To address the aforementioned problems, this application provides an arc-extinguishing chamber and an excitation fuse. The arc-extinguishing chamber can be applied to arc-extinguishing scenarios involving excitation fuses. The arc-extinguishing chamber includes a chamber body and a cover plate. The chamber body has a first groove, which contains a first partition portion that divides the first groove into a second groove and a third groove. The cover plate has a fourth groove, which contains a second partition portion that divides the fourth groove into a fifth groove and a sixth groove. The first partition portion includes a first fusing region, a first platform, and a second platform. The second partition portion includes a second fusing region, a third platform, and a fourth platform. When the cover plate is placed over the first groove of the arc-extinguishing chamber, the first platform and the third platform form a first arc-extinguishing cavity, and the second platform and the fourth platform form a second arc-extinguishing cavity. Both the first and second arc-extinguishing cavities are filled with an arc-extinguishing medium. In this way, by setting a platform on the partition, the arc-extinguishing chamber body and the cover plate are fastened together to form an arc-extinguishing chamber, which is then filled with an arc-extinguishing medium to quickly extinguish the circuit, thus improving the arc-extinguishing efficiency. This solution can be applied to a variety of scenarios, including but not limited to the applications mentioned above.

[0037] The specific structure will be described in detail below.

[0038] Please see Figures 1-5As shown, this application provides an arc-extinguishing chamber, including an arc-extinguishing chamber body 10 and a cover plate 20. The arc-extinguishing chamber body 10 has a first groove, and the first groove has a first partition 110, which divides the first groove into a second groove 141 and a third groove 142. The cover plate 20 has a fourth groove, and the fourth groove has a second partition 210, which divides the fourth groove into a fifth groove 221 and a sixth groove 222. The first partition 110 includes a first fusing region, a first platform 101, and a second platform 102. The second partition 210 includes a second fusing region, a third platform 201, and a fourth platform 202. When the cover plate 20 is placed on the first groove of the arc-extinguishing chamber, the first platform 101 and the third platform 201 form a first arc-extinguishing chamber, and the second platform 102 and the fourth platform 202 form a second arc-extinguishing chamber. Both the first and second arc-extinguishing chambers are filled with an arc-extinguishing medium.

[0039] In a specific implementation, a first step 111 is formed by recessing from the top of the first groove wall toward the bottom of the groove. The first step 111 divides the first groove into a first region 121 and a second region (not shown in the figure). The first region 121 is on the first step 111, and the second region is below the first step 111. The second region includes a second groove 141, a third groove 142, and a first partition 110.

[0040] The shape of the first region 121 is adapted to the shape of the cover plate 20, and can accommodate the cover plate 20, so that the top of the groove wall of the third groove 142 of the cover plate 20 rests on the first step 111, so that the cover plate 20 covers the first groove. The third platform 201 and the fourth platform 202 on the cover plate 20 are formed by the second partition 210 being recessed a certain distance at the height of the groove wall of the third groove 142. This allows the cover plate 20 to form the first arc-extinguishing cavity and the second arc-extinguishing cavity respectively with the first platform 101 and the second platform 102 when the cover plate 20 is engaged with the arc-extinguishing chamber body 10. Because the cover plate 20 is placed in the first groove, supported by the first step 111 and restricted by the side wall of the first step 111, the cover plate 20 is confined in the first groove, improving the stability of the connection between the arc-extinguishing chamber body 10 and the cover plate 20.

[0041] It is understood that the connection between the arc-extinguishing chamber body 10 and the cover plate 20 is not limited to the above-mentioned method of fitting the first step 111 with the cover plate 20. It can also be that a snap-fit ​​structure, such as a buckle or groove, is provided on the cover plate 20 and the arc-extinguishing chamber body 10. It can also be glued or other connection methods. As long as it can achieve the function of fixing the arc-extinguishing chamber body 10 and the cover plate 20 in this embodiment, it is considered to be within the technical concept of this application.

[0042] As can be seen, in this embodiment, a first platform 101 and a second platform 102 are provided on both sides of the first melting area of ​​the first partition 110, and a corresponding third platform 201 and a fourth platform 202 are provided on the second partition 210 of the cover plate 20, so as to expand the joint gap between the cover plate 20 and the arc extinguishing chamber body 10 into a first cavity and a second cavity, and fill the first cavity and the second cavity with an arc extinguishing medium. In this way, even if an electric arc is generated, it cannot pass through the first cavity and the second cavity, and the arc can be quickly extinguished by the arc extinguishing medium, thereby improving the arc extinguishing efficiency.

[0043] For further information, please refer to [link / reference]. Figures 1-5 When the cover plate 20 is placed on the first groove of the arc extinguishing chamber body, the second groove 141 and the fifth groove 221 form a third arc extinguishing chamber, and the third groove 142 and the sixth groove 222 form a fourth arc extinguishing chamber; both the third arc extinguishing chamber and the fourth arc extinguishing chamber are filled with arc extinguishing medium.

[0044] In specific implementation, the first fusing region can be connected to the first platform 101 and the second platform 102 respectively. The first partition 110 formed divides the second region of the first groove into the second groove 141 and the third groove 142. When the cover plate 20 is placed on the arc-extinguishing chamber body 10, the second partition 210 fits into the first partition 110, so that the first fusing region and the second fusing region are combined and fixed. The first platform 101, the second platform 102, the third platform 201 and the fourth platform 202, due to their concave arrangement at a certain distance, will form the first arc-extinguishing chamber and the second arc-extinguishing chamber, while the second groove 141 and the fifth groove 221 form the third arc-extinguishing chamber, and the third groove 142 and the sixth groove 222 form the fourth arc-extinguishing chamber.

[0045] Specifically, the third arc-extinguishing cavity is connected to the first and second arc-extinguishing cavities, and the fourth arc-extinguishing cavity is also connected to the first and second arc-extinguishing cavities. When the first, second, and third arc-extinguishing cavities are filled with arc-extinguishing media, the arc-extinguishing media can be connected as a whole to prevent arc leakage and the formation of a current path, thereby improving the arc-extinguishing efficiency.

[0046] It is understandable that the first, second, third, and fourth arc-extinguishing cavities can be independent of each other, each filled with an arc-extinguishing medium. In this way, the arc can be blocked by the four arc-extinguishing cavities, preventing the arc from forming a current path and improving arc-extinguishing efficiency.

[0047] In one possible embodiment, please continue reading Figure 1 and Figure 3The first fusible region includes a plurality of first partitions 151, and each of the plurality of first partitions 151 is connected at both ends to a first platform 101 and a second platform 102, respectively; at least one first fixing member 152 is provided on the first partition 151, and at least one first mating part 212 is provided on the cover plate 20; the excitation fuse includes a fusible element 30; the first mating part 212 cooperates with the first fixing member 152 to clamp the fusible element 30 between the first partition 110 and the second partition 210.

[0048] In a specific implementation, the activated fuse also includes a fusible element 30. Multiple first separators 151 form a first fusing region in the middle of the first separating portion 110. The fusible element 30 can be placed on this first fusing region. A cover plate 20 covers the first groove, causing a second fusing region to press against the fusing portion of the fusible element 30, thus clamping the fusing portion between the first and second fusing regions. When the fuse-breaking mechanism of the activated fuse is triggered, the fusible element 30 will melt and break between the first and second fusing regions.

[0049] Each first separator 151 is provided with at least one first fixing member 152, and the cover plate 20 is provided with at least one first mating part 212 adapted to at least one first fixing member 152. The melt includes at least one second mating part 311, and the melt 30 is sleeved on at least one first fixing member 152 through at least one second mating part 311. The cover plate 20 covers the melt 30 and is engaged with at least one first fixing member 152 through at least one first mating part 212, thereby fixing the melt 30 between the first melting region and the second melting region.

[0050] It is understood that the shape of the first fastener 152, the first mating part 212, and the second mating part 311 are not limited. They can be protrusions, grooves, through holes, mortise and tenon structures, or other mating structures. As long as they can achieve the fixing function in this embodiment, they are all within the protection scope of this application.

[0051] It is understood that, similar to the first fusion region, at least one corresponding second partition 211 is also provided in the second fusion region. Each of the plurality of second partitions 211 has its two ends connected to the third platform 201 and the fourth platform 202, respectively. Specifically, at least one first mating part 212 is provided on the at least one second partition 211 to engage with the at least one first fixing member 152, clamping the molten body 30 between the first partition 110 and the second partition 210.

[0052] As can be seen, in this embodiment, by setting a fusing area, the fusing part of the melt 30 is controllable and can accurately fuse the fusing part of the melt 30, thereby improving the fusing efficiency. When the cover plate 20 is placed on the first groove, at least one first fixing member 152 and at least one first mating part 212 cooperate one by one to fix the melt 30 in the fusing area, and further improve the stability of the cover plate 20 in the first groove.

[0053] In one possible embodiment, please continue reading Figures 2 to 4 A first through hole 160 is provided between every two first separators 151, and a first cut-off member 161 is provided in the first through hole 160. At least one second fixing member is provided on the first cut-off member 161. The excitation fuse includes a fusible element, and the second fixing member is used to fix the fusible element.

[0054] Specifically, at least one first connector 163 extends from the first side of the first cutting member 161, and at least one second connector 164 extends from the second side of the first cutting member 161; the at least one first connector 163 is connected to the first hole wall of the first through hole 160, and the at least one second connector 164 is connected to the second hole wall of the first through hole 160.

[0055] In a specific implementation, the two first separators 151 are used as an example. The first wall of the first through hole 160 is formed by the first separator 151 near the second groove 141, and the second wall of the first through hole 160 is formed by the first separator 151 near the third groove 142. A first connector 163 and a second connector 164 extend from both sides of the first cut-off member 161, respectively, with the first connector 163 connected to the first hole wall and the second connector 164 connected to the second hole wall. In this way, the first cut-off member 161 is fixed in the first through hole 160.

[0056] It is understandable that the first separator 151 is not limited to two, and other numbers can be set, such as three.

[0057] The following example uses three first separators 151.

[0058] The three first partitions 151 are arranged sequentially in the first fusion region. A first through hole 160 is provided between the first partition 151 closest to the second groove 141 and the first partition 151 in the middle. Another first through hole 160 is provided between the first partition 151 closest to the third groove 142 and the first partition 151 in the middle. At the same time, a first cutting member 161 is provided in each first through hole 160, and is fixed in the corresponding first through hole 160 by the first connecting member 163 and the second connecting member 164 on the corresponding first cutting member 161.

[0059] Furthermore, a sealing layer can be provided at the opening of the first through hole 160 on the side opposite to the cover plate 20 to seal the first through hole 160 and prevent the first cutting element 161 or other components, arc extinguishing medium, etc. from overflowing from the first through hole 160. It is understood that the sealing layer can be made of any colloidal material, or it can be formed by applying glue, or it can be formed by other materials, and there is no limitation here.

[0060] Alternatively, instead of providing the first connector 163 and the second connector 164 on the first cut-off member 161, the first cut-off member 161 can be directly fixed in the first through hole 160 through the sealing layer.

[0061] Alternatively, at least one second through hole can be provided on the first hole wall and the second hole wall, which can be combined with at least one first connector 163 and at least one second connector 164 on the first cutting member 161, and the first connector 163 and the second connector 164 can be engaged in the second through hole to fix the first cutting member 161.

[0062] Alternatively, the first cutting member 161, the first connecting member 163, the second connecting member 164, and the two adjacent first separators 151 can be integrally formed.

[0063] It is understood that the first cutting member 161 can also be fixed in other ways, which are not limited here. As long as the first cutting member 161 can be fixed, they are all within the scope of the embodiments of this application.

[0064] As can be seen, in this embodiment, the first cutting member 161 can be fixed in the through hole formed by two adjacent first partition members 151, thereby improving the overall structural stability of the arc extinguishing chamber body 10.

[0065] In one possible embodiment, please refer to Figures 3 to 6 The excitation fuse also includes a second cutting member 40, on which at least one third mating part 401 is provided. The third mating part 401 cooperates with the second fixing member 162 to clamp the molten material 30 between the second cutting member 40 and the first cutting member 161.

[0066] The melt 30 is provided with at least one fourth mating part 312. The melt 30 is sleeved on at least one second fixing member 162 through at least one fourth mating part 312, and the third mating part 401 cooperates with the second fixing member 162 to clamp the melt 30 between the second cutting member 40 and the first cutting member 161.

[0067] It is understood that the melt 30 can be clamped between the second cut-off member 40 and the first cut-off member 161 in other forms, not limited to the form of the first through hole 160, such as a groove, or even a plane, without limitation.

[0068] In a specific implementation, the cover plate 20 is provided with at least one fourth through hole 241, which corresponds one-to-one with at least one first through hole 160, for accommodating the second cutting member 40, and when the second cutting member 40 is impacted by the impact member of the excitation fuse, the second cutting member 40 can be guided to the first cutting member 161 for impact through the fourth through hole 241.

[0069] At least one third mating part 401 on the second cutting member 40 corresponds one-to-one with at least one second fixing member 162 on the first cutting member 161. The second cutting member 40 is engaged with at least one second fixing member 162 through at least one third mating part 401, thereby connecting the second cutting member 40 to the first cutting member 161. In this way, when the second cutting member 40 is impacted, the first cutting member 161 will also be subjected to impact force, which will break the molten part 310 of the melt 30 and the first connecting member 163 and the second connecting member 164 on the first cutting member 161, causing the first cutting member 161, the second cutting member 40 and the broken molten part 310 to fall out from the first through hole 160.

[0070] Specifically, such as Figure 6 As shown, the first end of the second cutting member 40 near the melt 30 and the first cutting member 161 is configured as a blade to increase the pressure on the melt 30 during impact and improve the cutting efficiency of the melt 30. Simultaneously, the end of the first cutting member 161 near the melt 30 and the second cutting member 40 can be configured as a seventh groove adapted to the blade, which can cooperate with the second cutting member 40 to clamp the melt 30 during impact. It is understood that the first end of the second cutting member 40 can also be configured in other shapes, such as a cuboid or a plane, which is not limited here.

[0071] like Figure 4 and Figure 5As shown, the first fusion region is provided with two first through holes 160 and two fourth through holes 241. It can be understood that the shape of the first through hole 160 and the shape of the fourth through hole 241 are not limited, as long as the size of the first through hole 160 and the fourth through hole 241 can allow the first cutting member 161 and the second cutting member 40 to pass through.

[0072] Furthermore, the second fastener 162 can be columnar, snap-fit, or other shapes, while the shape of the third mating part 401 can be adapted to the second fastener 162, and is not limited here.

[0073] As can be seen, in this embodiment, the molten material 30 can be clamped by the second cutting member 40 and the first cutting member 161, and the molten material 30 can be quickly cut off when melting occurs, thereby improving the melting speed of the excitation fuse. When the cover plate 20 is placed on the first groove, at least one second fixing member 162 and at least one third mating part 401 cooperate one by one to fix the molten material 30 in the melting area, and further improve the stability of the cover plate 20 in the first groove.

[0074] Please refer to one possible embodiment as well. Figures 3 to 7 The first platform 101 is provided with at least one first blocking member 131, which is disposed on the connection boundary between the first platform 101 and the first fusion region and contacts the first cutting member 161 and / or the second cutting member 40; the cover plate 20 is provided with at least one first protrusion 231 that cooperates with the at least one first blocking member 131. The second platform 102 is provided with at least one second blocking member 132, which is disposed on the connection boundary between the second platform 102 and the first fusion region and contacts the first cutting member 161 and / or the second cutting member 40; the cover plate 20 is provided with at least one second protrusion 232 that cooperates with the at least one second blocking member 132.

[0075] In a specific implementation, when the melt 30 is melted, the second cutting member 40 impacts the melted part of the melt 30 and the first cutting member 161, which will generate an arc, and then generate an electric arc, which will spread along the gap of the melted area.

[0076] In this embodiment, a corresponding number of first blocking members 131 are provided for the number of first through holes 160. These first blocking members 131 are located on the connection boundary between the first platform 101 and the melting area, corresponding to the positions of the first through holes 160. This allows the first blocking members 131 to abut against the cutting portion composed of the first cutting member 161 and the second cutting member 40, preventing the electric arc generated when the molten material 30 is melted from spreading from both ends of the melting area. This prevents the formation of a current path and accelerates the arc extinguishing efficiency.

[0077] Specifically, the first blocking member 131 includes a first limiting part, and the first protrusion 231 cooperates with the first limiting part to connect the first blocking member 131 to the cover plate; the second blocking member 132 is provided with a second limiting part, and the second protrusion 232 cooperates with the second limiting part to connect the second blocking member 132 to the cover plate.

[0078] The first limiting part can be irregularly shaped, with multiple bends, and a first protrusion 231 adapted to the first limiting part is provided on the cover plate 20. When the cover plate 20 is placed on the first groove, the first protrusion 231 cooperates with the first limiting part to further limit the position of the cover plate 20, thereby further improving the overall structural stability of the arc extinguishing chamber body 10. At the same time, the irregular shape can improve the limiting ability of the cover plate 20.

[0079] It is understandable that the shape of the first limiting part can also be set to a regular shape, which can also achieve the above-mentioned effect of improving stability, but the effect will be reduced. However, setting a groove with a regular shape such as a cross can also achieve a similar or the same stability effect.

[0080] Alternatively, a protrusion may be provided on the first blocking member 131, a groove may be provided on the cover plate 20, or other mating structures may be provided on the first blocking member 131 and the cover plate 20, which are not limited here.

[0081] Similarly, the specific setting principle of the second blocking member 132 is the same as that of the first blocking member 131, including a second limiting part corresponding to the first limiting part (the shape is the same as the first limiting part), and a second protrusion 232 corresponding to the second limiting part (the shape is the same as the first protrusion) is also provided on the cover plate 20, which will not be described in detail here.

[0082] like Figure 7 As shown, one embodiment of the blocking member is illustrated, wherein a limiting portion 133 is provided on the blocking member, and the first limiting portion and the second limiting portion have the same shape as the limiting portion 133.

[0083] As can be seen, in this embodiment, by providing a first limiting part and a second limiting part on the first blocking member 131 and the second blocking member 132 respectively, the first limiting part and the second limiting part cooperate with the first protrusion and the second protrusion respectively, so that the cover plate is combined with the first blocking member 131 and the second blocking member 132, thereby improving the limiting ability of the cover plate 20 and improving the overall stability of the arc extinguishing cavity.

[0084] In one possible embodiment, please refer to the following: Figures 3 to 7 The second cutting member 40 is provided with a third connecting member 402 and a fourth connecting member 403. The first blocking member 131 is provided with a fifth platform that matches the shape of the third connecting member 402. The second blocking member 132 is provided with a sixth platform that matches the shape of the fourth connecting member 403. The third connecting member 402 is placed on the fifth platform, and the fourth connecting member 403 is placed on the sixth platform. When the cover plate 20 is engaged with the first blocking member 131 and the second blocking member 132 through the first protrusion 231 and the second protrusion 232 respectively, the end of the hole wall of the fourth through hole 241 is pressed on the third connecting member 402 and the fourth connecting member 403 respectively.

[0085] In specific implementation, after the second cutting member 40 is combined with the first cutting member 161, the third connecting member 402 presses on the fifth platform, and the fourth connecting member 403 presses on the sixth platform. Parts of the structure of the first limiting part and the second limiting part surround the third connecting member 402 and the fourth connecting member 403. Since the first protrusion and the second protrusion both extend from the two ends of the fourth through hole 241 near the third platform and the fourth platform, when the cover plate 20 is placed on the first groove, the first protrusion 231 is combined with the first limiting part, and the second protrusion 232 is combined with the second limiting part. At this time, the end of the hole wall of the fourth through hole 241 facing the first groove will press on the third connecting member 402 and the fourth connecting member 403, fixing the second cutting member 40 between the cover plate 20 and the first blocking member 131 and the second blocking member 132. In this way, the structural stability of the arc extinguishing chamber is improved.

[0086] The shapes of the fifth and sixth platforms are similar to Figure 7 The platform 134 is consistent with the platform in the text. It is understandable that the platform 134 can also be other shapes, which will not be elaborated here.

[0087] With this configuration, the first blocking member 131 and the second blocking member 132 abut against the two ends of the second cutting member 40, respectively, preventing the electric arc from overflowing from the gap.

[0088] In one possible embodiment, please refer to Figures 1-3 ,as well as Figure 8A third fixing member 171 is provided in the second groove 141, and a fourth fixing member 172 is provided in the third groove 142. The first end of the third fixing member 171 is connected to the first partition member 151 closest to the second groove 141 in the first melting area, and the second end of the third fixing member 171 is connected to the groove wall of the second groove 141 away from the first melting area. The first end of the fourth fixing member 172 is connected to the first partition member 151 closest to the third groove 142 in the first melting area, and the second end of the fourth fixing member 172 is connected to the groove wall of the third groove 142 away from the first melting area.

[0089] Furthermore, a fifth fixing member 251 is provided in the fifth groove 221, and a sixth fixing member 252 is provided in the sixth groove 222. The first end of the fifth fixing member 251 is connected to the second partition member 211 closest to the fifth groove 221 in the second melting area, and the second end of the fifth fixing member 251 is connected to the groove wall of the fifth groove 221 facing away from the second melting area. The first end of the sixth fixing member 252 is connected to the second partition member 211 closest to the sixth groove 222 in the first melting area, and the second end of the sixth fixing member 252 is connected to the groove wall of the sixth groove 222 facing away from the first melting area.

[0090] Specifically, the melt 30 is provided with a first bending portion 320 and a second bending portion 330. The first bending portion 320 is provided with a first gap 321, which is used to accommodate a third fixing member 171. The third fixing member 171 is stuck in the first gap 321 to limit the melt 30. Similarly, the second bending portion 330 is provided with a second gap 331, which is used to accommodate a fourth fixing member 172. The fourth fixing member 172 is stuck in the second gap 331 to limit the melt 30.

[0091] Furthermore, the third fixing member 171 is provided with an eleventh groove 1711, and the fourth fixing member 172 is provided with a twelfth groove 1721; the power unit is provided with a first snap-fit ​​member and a second snap-fit ​​member; the cover plate 20 is provided with a fifth through hole 253 and a sixth through hole 254. By passing the first snap-fit ​​member through the fifth through hole 253 and snapping it into the eleventh groove 1711, and passing the second snap-fit ​​member through the sixth through hole 254 and snapping it into the twelfth groove 1721, the melt 30 is further limited, and the positional relationship between the power unit and the arc-extinguishing chamber is defined.

[0092] As can be seen, in this embodiment, the melt 30 is further limited by the third fixing member 171 and the fourth fixing member 172 to fix the melt 30 in the arc extinguishing chamber body 10.

[0093] In one possible embodiment, the arc-extinguishing chamber body 10 is further provided with at least one seventh through hole 180. This at least one seventh through hole 180 can be determined according to the shape of the arc-extinguishing chamber body 10; if it is a cuboid, it is located at one of the four corners of the cuboid. The at least one seventh through hole 180 is connected to the power device for activating the fuse. The power device provides an impact force to the second cutting element 40.

[0094] This application also provides an excitation fuse; please refer to [link / reference]. Figures 1-9 The system includes a melt 30 and an arc-extinguishing chamber as described in the embodiments of this application. The melt 30 includes a fusing portion 310, a first bending portion 320, a second bending portion 330, a first electrode 340, and a second electrode 350. The fusing portion 310 is provided with at least one second mating portion 311, which is sleeved on at least one second fixing member 162 of the first cutting member 161. At the same time, the first bending portion 320 is provided with a first gap 321, which is used to accommodate a third fixing member 171. The third fixing member 171 is locked in the first gap 321 to limit the melt 30. Similarly, the second bending portion 330 is provided with a second gap 331, which is used to accommodate a fourth fixing member 172. The fourth fixing member 172 is locked in the second gap 331 to limit the melt 30.

[0095] Furthermore, the first electrode 340 and the second electrode 350 respectively extend from the gap between the cover plate 20 and the first groove and are connected to the conductive part of the excitation fuse to realize the electrical connection of the fusible element 30.

[0096] In this embodiment, the arc-extinguishing chamber includes an arc-extinguishing chamber body 10 and a cover plate 20. The arc-extinguishing chamber body 10 has a first groove, and the first groove has a first partition 110, which divides the first groove into a second groove 141 and a third groove 142. The cover plate 20 has a fourth groove, and the fourth groove has a second partition 210, which divides the fourth groove into a fifth groove 221 and a sixth groove 222. The first partition 110 includes a first melting region, a first platform 101, and a second platform 102. The second partition 210 includes a second melting region, a third platform 201, and a fourth platform 202. When the cover plate 20 is placed on the first groove of the arc-extinguishing chamber, the first platform 101 and the third platform 201 form a first arc-extinguishing chamber, and the second platform 102 and the fourth platform 202 form a second arc-extinguishing chamber. Both the first and second arc-extinguishing chambers are filled with an arc-extinguishing medium. In this way, by setting a platform on the partition, the arc extinguishing chamber body 10 and the cover plate 20 are fastened together to form an arc extinguishing chamber, and the arc extinguishing medium is filled in the arc extinguishing chamber to quickly extinguish the circuit and improve the arc extinguishing efficiency.

[0097] While this application discloses the above information, it is not limited thereto. Any person skilled in the art can easily conceive of variations or substitutions without departing from the spirit and scope of this application, and can make various alterations and modifications, including combinations of the different functions and implementation steps described above, as well as software and hardware implementation methods, all of which are within the protection scope of this application.

Claims

1. An arc-extinguishing chamber, used in activating a fuse, characterized in that, It includes an arc-extinguishing chamber body and a cover plate. The arc-extinguishing chamber body is provided with a first groove, and the first groove is provided with a first partition, which divides the first groove into a second groove and a third groove. The cover plate is provided with a fourth groove, and the fourth groove is provided with a second partition, which divides the fourth groove into a fifth groove and a sixth groove. The first partition includes a first fusible region, a first platform, and a second platform; the second partition includes a second fusible region, a third platform, and a fourth platform. When the cover plate is placed on the first groove of the arc-extinguishing chamber, the first platform and the third platform form the first arc-extinguishing chamber, and the second platform and the fourth platform form the second arc-extinguishing chamber. Both the first and second arc-extinguishing cavities are filled with arc-extinguishing media.

2. The arc-extinguishing chamber according to claim 1, characterized in that, When the cover plate is placed on the first groove of the arc-extinguishing chamber body, the second groove and the fifth groove form a third arc-extinguishing chamber, and the third groove and the sixth groove form a fourth arc-extinguishing chamber; Both the third and fourth arc-extinguishing cavities are filled with arc-extinguishing media.

3. The arc-extinguishing chamber according to claim 1 or 2, characterized in that, The first fusion-breaking area includes a plurality of first separators, and each of the plurality of first separators is connected at both ends to the first platform and the second platform, respectively; The first separator is provided with at least one first fixing member, the cover plate is provided with at least one first mating part, and the excitation fuse includes a fusible element; The first mating part cooperates with the first fixing member to clamp the melt between the first partition and the second partition.

4. The arc-extinguishing chamber according to claim 3, characterized in that, A first through hole is provided between every two first separators, a first cutting member is provided in the first through hole, and at least one second fixing member is provided on the first cutting member; The second fastener is used to fix the melt.

5. The arc-extinguishing chamber according to claim 4, characterized in that, At least one first connector extends from a first side of the first cutting member, and at least one second connector extends from a second side of the first cutting member; The at least one first connector is connected to the first hole wall of the first through hole, and the at least one second connector is connected to the second hole wall of the first through hole.

6. The arc-extinguishing chamber according to claim 5, characterized in that, The excitation fuse includes a second cutting element, and the second cutting element is provided with at least one second mating part; The second mating part cooperates with the second fixing member to clamp the melt between the second cutting member and the first cutting member.

7. The arc-extinguishing chamber according to claim 6, characterized in that, At least one first blocking member is provided on the first platform. The at least one first blocking member is located on the connection boundary between the first platform and the first fusion area and is in contact with the first cutting member and / or the second cutting member. The cover plate is provided with at least one first protrusion that cooperates with the at least one first blocking member; At least one second blocking member is provided on the second platform. The at least one second blocking member is located on the connection boundary between the second platform and the first fusion area and is in contact with the first cutting member and / or the second cutting member. The cover plate is provided with a second protrusion that cooperates with the at least one second blocking member.

8. The arc-extinguishing chamber according to claim 7, characterized in that, The first blocking member includes a first limiting part, and the first protrusion cooperates with the first limiting part to connect the first blocking member to the cover plate; The second blocking member is provided with a second limiting part, and the second protrusion cooperates with the second limiting part to connect the second blocking member with the cover plate.

9. The arc-extinguishing chamber according to claim 7 or 8, characterized in that, The second cutting member is provided with a third connecting member and a fourth connecting member, the first blocking member is provided with a fifth platform that is adapted to the shape of the third connecting member, and the second blocking member is provided with a sixth platform that is adapted to the shape of the fourth connecting member. The third connector is placed on the fifth platform, and the fourth connector is placed on the sixth platform; The cover plate is provided with at least one fourth through hole. When the cover plate is combined with the first blocking member and the second blocking member through the first protrusion and the second protrusion respectively, the end of the hole wall of the fourth through hole presses on the third connecting member and the fourth connecting member respectively.

10. An excitation fuse, characterized in that, It includes a melt and an arc-extinguishing chamber as described in any one of claims 1-9, wherein the melt is disposed in the arc-extinguishing chamber.

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