CN217280668U - Arc extinguishing chamber - Google Patents
Arc extinguishing chamber Download PDFInfo
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- CN217280668U CN217280668U CN202221001632.6U CN202221001632U CN217280668U CN 217280668 U CN217280668 U CN 217280668U CN 202221001632 U CN202221001632 U CN 202221001632U CN 217280668 U CN217280668 U CN 217280668U
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- arc chute
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Abstract
The utility model discloses an arc-extinguishing shield, which comprises a top plate and two side plates; the top plate is used for being connected with the converter box body; curb plate integrated into one piece is in the bottom of roof to surround the roof setting, enclose with the roof and close and be formed with the installation cavity, the curb plate has the front side and the rear side back to setting up, and the front side and/or the rear side of curb plate are equipped with the installing port of intercommunication installation cavity, and the installing port is used for supplying the circuit breaker at least part to install to the installation cavity. The utility model discloses technical scheme has simplified the equipment process of arc-extinguish chamber, and has made things convenient for the installation and the maintenance of circuit breaker.
Description
Technical Field
The utility model relates to a track traffic circuit breaker protection technical field, in particular to arc-extinguishing chamber.
Background
The existing subway vehicle-mounted direct current circuit breaker is easy to generate the phenomena of arc spraying and arc drawing in the self high-current high-speed breaking process, and generates larger arc striking energy such as heat, air pressure, ionized gas and the like. The traditional vehicle-mounted direct current circuit breaker guides instantly generated strong arc spraying energy to an arc spraying opening of the circuit breaker to be sprayed out through an arc striking grid sheet, an arc guiding plate and the like.
In order to prevent the damage, hidden danger and safety problems caused by arc spraying energy to peripheral devices in a vehicle-mounted converter box, a large safety space needs to be reserved at the peripheral position of an arc spraying opening, and any device and metal piece cannot be installed in the safety space to guarantee the effective distance of the arc spraying.
In order to solve the problems, the arc extinguishing cover is additionally arranged at the periphery of the arc spraying opening of the circuit breaker so as to isolate the arc striking energy generated in the moment of switching on and off the circuit breaker through the arc extinguishing cover and reduce the risk potential of devices. However, the traditional arc-extinguishing chamber adopts a split type Polycarbonate (PC) plate structure, needs to use a plurality of plates for splicing and combining, needs to spend a large amount of time for splicing, and leads to complicated assembly procedures.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing an arc-extinguishing cover, aim at simplifying the equipment process of arc-extinguishing cover, and make things convenient for the installation and the maintenance of circuit breaker.
To achieve the above object, the present invention provides an arc-extinguishing chamber, including:
the top plate is used for being connected with the converter box body;
the side plate is integrally formed at the bottom of the top plate and arranged around the top plate to form an installation cavity in a surrounding mode with the top plate, the side plate is provided with a front side and a rear side which are arranged back to back, an installation opening communicated with the installation cavity is formed in the front side and/or the rear side of the side plate, and the installation opening is used for enabling the circuit breaker to be at least partially installed into the installation cavity.
The utility model discloses an in the embodiment, the bottom surface of roof is equipped with the connecting hole that link up to the top surface, the arc extinguishing chamber still includes the connecting piece, the connecting piece is worn to locate the connecting hole and is used for connecting the converter box.
In an embodiment of the present invention, a groove is disposed on the bottom surface of the top plate, the connecting hole penetrates through to the bottom of the groove, the connecting member sequentially penetrates through the groove and the connecting hole, and at least a portion of the connecting member abuts against the bottom of the groove.
In an embodiment of the present invention, the arc-extinguishing chamber further includes a plug, and the plug is disposed at one end of the groove exposed from the connecting member.
In an embodiment of the present invention, the plug includes a connecting sleeve and a blocking cover, the connecting sleeve is inserted into the groove and sleeved on the connecting member, the blocking cover is connected to one end of the connecting sleeve and covers one end of the connecting member exposed from the groove; and one side of the blocking cover back to the connecting sleeve is provided with a wrench hole.
The utility model discloses an in the embodiment, the top surface of roof is equipped with the boss, the boss encircles the connecting hole sets up, the connecting piece is worn to locate in proper order the connecting hole with the boss.
In an embodiment of the present invention, the periphery of the side plate has a mold release outer surface, along the top plate to the arrangement direction of the side plate, the mold release outer surface is gradually inclined outward.
In an embodiment of the present invention, a first reinforcing rib is disposed on a surface of the top plate;
and/or the surface of the side plate is provided with a second reinforcing rib.
In an embodiment of the present invention, the arc extinguishing chamber is a compression molded structure made of SMC insulating material.
In an embodiment of the present invention, a limiting table is convexly disposed on an inner wall of the mounting opening, and a first engaging hole is disposed on a table-board of the limiting table; the arc extinguishing cover further comprises an insulating baffle and a fastener, the insulating baffle is arranged on the mounting opening in a covered mode, the edge of the insulating baffle abuts against the table top of the limiting table, the insulating baffle is provided with a second embedding hole, and the fastener penetrates through the second embedding hole and is inserted into the first embedding hole.
The arc-extinguishing cover of the utility model is integrally formed at the bottom of the top plate through the side plate, namely, the arc-extinguishing cover is of an integrally formed structure, and before the arc-extinguishing cover is used, the arc-extinguishing cover only needs to be connected to the converter box body through the top plate, and the arc-extinguishing cover does not need to be assembled, thereby simplifying the assembling procedure of the arc-extinguishing cover; in addition, the arc extinguishing chamber passes through the roof hoist and mount on the converter box to make the bottom of arc extinguishing chamber unsettled, and the front side and/or the rear side of curb plate are equipped with the installing port, so, the circuit breaker alright push into the installation cavity of arc extinguishing chamber through the installing port, make the circuit breaker dismouting comparatively convenient with the maintenance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Figure 1 is a schematic structural view of an arc chute according to an embodiment of the present invention;
figure 2 is a schematic structural view of another view angle of an embodiment of the arc-extinguishing chamber of the present invention;
figure 3 is a schematic view of another embodiment of the arc-extinguishing chamber of the present invention;
figure 4 is a front view of an embodiment of the arc chute of the present invention;
figure 5 is a side view of an embodiment of the arc chute of the present invention;
figure 6 is a top view of an embodiment of the arc chute of the present invention;
figure 7 is a schematic structural view of a plug at a viewing angle in an embodiment of the arc chute of the present invention;
figure 8 is a schematic structural view of the screw plug at another viewing angle in an embodiment of the arc-extinguishing chamber of the present invention;
figure 9 is a cross-sectional view of an embodiment of the arc chute of the present invention;
fig. 10 is a partial enlarged view of a portion a in fig. 9.
The reference numbers indicate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an arc-extinguishing chamber 100 aims at simplifying arc-extinguishing chamber 100's equipment process, and makes things convenient for the installation and the maintenance of circuit breaker.
The following will explain the specific structure of the arc chute 100 of the present invention, and will explain the arc chute 100 in use as an example:
referring to fig. 1 to 4, in an embodiment of the arc chute 100 of the present invention, the arc chute 100 includes:
the top plate 10 is used for being connected with the converter box body, and the top plate 10 is used for being connected with the converter box body;
the side plate 20 is integrally formed at the bottom of the top plate 10 and arranged around the top plate 10 to form a mounting cavity in a surrounding manner with the top plate 10, the side plate 20 has a front side and a rear side which are arranged oppositely, a mounting opening 21 communicated with the mounting cavity is formed in the front side and/or the rear side of the side plate 20, and the mounting opening 21 is used for at least partially mounting a circuit breaker into the mounting cavity.
It can be understood that, the arc-extinguishing chamber 100 of the present invention, by integrally forming the side plate 20 at the bottom of the top plate 10, that is, the arc-extinguishing chamber 100 is of an integrally formed structure, before use, the arc-extinguishing chamber 100 is only required to be connected to the converter box body through the top plate 10, and the arc-extinguishing chamber 100 does not need to be assembled, thereby simplifying the assembling process of the arc-extinguishing chamber 100; in addition, arc-extinguishing chamber 100 passes through roof 10 hoist and mount on the converter box to make arc-extinguishing chamber 100's bottom unsettled, and the front side and/or the rear side of curb plate 20 are equipped with installing port 21, so, the circuit breaker alright push the installation intracavity of arc-extinguishing chamber 100 through installing port 21, make circuit breaker dismouting and maintenance comparatively convenient.
In this embodiment, arc-extinguishing chamber 100 is the open structure in bottom, because the position that the arc was spouted to the circuit breaker high pressure is located the top of circuit breaker, after the circuit breaker pushed the installation cavity by installing port 21, alright with make the complete holding in the installation cavity of arc-extinguishing chamber 100 in top of circuit breaker, in order to isolate the striking energy of circuit breaker break-make production in the twinkling of an eye through arc-extinguishing chamber 100, can make the bottom of circuit breaker at least part show outside the installation cavity of arc-extinguishing chamber 100 simultaneously, in order to do benefit to the heat in the twinkling of an eye that the circuit breaker produced in the course of the work, striking energy such as ionized gas obtains good dissipation.
In practical application, the top plate 10 of the arc chute 100 may be connected to the converter case by means of screws, fasteners, plugs, adhesives, or the like.
Further, with reference to fig. 3, fig. 6, fig. 9 and fig. 10, in an embodiment of the arc-extinguishing chamber 100 of the present invention, the bottom surface of the top plate 10 is provided with a connecting hole 11 penetrating to the top surface, the arc-extinguishing chamber 100 further includes a connecting member 40, and the connecting member 40 is disposed through the connecting hole 11 and is used for connecting the converter box.
In this embodiment, the converter case is provided with a fixing hole matching with the connecting member 40.
So set up, in the installation, pass connecting hole 11 on the roof 10 with connecting piece 40 by the below of roof 10, insert the fixing hole of establishing the converter box with connecting piece 40, can fix arc-extinguishing cover 100 on the converter box to realize the quick assembly disassembly of arc-extinguishing cover 100, and fully guarantee the installation stability of arc-extinguishing cover 100.
In addition, in order to further improve the installation stability of the arc-extinguishing chamber 100, a plurality of connecting holes 11 arranged at intervals may be formed in the top plate 10, and a plurality of fixing holes arranged at intervals are correspondingly formed in the converter box body, so that the arc-extinguishing chamber 100 can be sufficiently fixed on the converter box body by using the plurality of connecting pieces 40 in cooperation with the plurality of connecting holes 11 and the plurality of fixing holes in the installation process.
In some embodiments, when the top plate 10 of the arc chute 100 has a substantially plate-shaped structure with a rectangular cross section, the top plate 10 may be provided with connection holes 11 at four corners thereof.
Further, referring to fig. 9 and 10, in an embodiment of the arc-extinguishing chamber 100 of the present invention, a groove 14 is formed on the bottom surface of the top plate 10, the connecting member 40 sequentially penetrates through the groove 14 and the connecting hole 11, and the connecting hole 11 at least partially abuts against the bottom of the groove 14.
In the present embodiment, when the number of the connection holes 11 is provided in plurality, the recess 14 will also be provided in plurality corresponding to the number of the connection holes 11.
By arranging the groove 14 on the bottom surface of the top plate 10 and enabling the connecting hole 11 to penetrate through the groove bottom of the groove 14, in the installation process, the connecting piece 40 can sequentially penetrate through the groove 14 and the connecting hole 11 and be inserted into a fixing hole of the converter box body, in addition, at least part of the connecting piece 40 is abutted against the groove bottom of the groove 14, the arc extinguishing cover 100 can be locked on the converter box body, and meanwhile, the connecting piece 40 cannot protrude out of the bottom surface of the top plate 10 to cause interference on a circuit breaker.
Further, referring to fig. 1, fig. 2, fig. 7 to fig. 10, in an embodiment of the arc-extinguishing chamber 100 of the present invention, the arc-extinguishing chamber 100 further includes a plug 30, and the plug 30 is covered on one end of the connecting member 40 exposed to the groove 14.
Since the connecting member 40 is usually made of a screw, which is a metal structural member, to ensure the strength of the connecting member 40, the screw 30 is covered at one end of the connecting member 40 exposed to the groove 14 to ensure that the inside of the arc-extinguishing chamber 100 is entirely made of an insulating material, so that the electric sparks and high-energy particles sprayed from the circuit breaker can be prevented from being transmitted to the metal surface of the converter case through the connecting member 40 to damage the devices around the converter case.
Specifically, the plug 30 may be a structure in which SMC insulating material is molded.
In some embodiments, the plug 30 may be locked in the groove by providing the outer side wall of the plug 30 with an external thread and providing the groove wall of the groove 14 with an internal thread, so that the external thread and the internal thread are matched in a threaded manner, and the connection member 40 is covered at one end exposed in the groove 14. Of course, in other embodiments, the plug 30 may be fixed in the groove 14 by snapping, bonding, or the like.
Further, referring to fig. 7 to 10 in combination, in an embodiment of the arc extinguishing chamber 100 of the present invention, the screw plug 30 includes a connecting sleeve 31 and a blocking cover 31, the connecting sleeve 31 is inserted into the groove 14 and sleeved on the connecting member 40, the blocking cover 31 is connected to one end of the connecting sleeve 31 and covers one end of the connecting member 40 exposed to the groove 14; a wrench hole 321 is provided on a side of the blocking cover 31 facing away from the connecting sleeve 31.
So set up, in the installation, at first through artifical with the connecting sleeve 31 screw thread of plug 30 insert establish in recess 14 to fix in advance plug 30, then use outer hexagonal spanner and the wrench hole 321 cooperation on the shutoff lid 31, in order to screw up plug 30 fully on the cell wall of recess 14.
In this embodiment, the wrench hole 321 is a blind hole, that is, the wrench hole 321 is not communicated to the inner space of the connecting sleeve 31, so that the connecting member 40 is not exposed in the mounting cavity of the arc extinguishing chamber 100 through the wrench hole 321, and the metal connecting member 40 can be prevented from being exposed at the position of the arc spraying ionized gas of the circuit breaker, thereby preventing the conductive conduction from being damaged.
Further, referring to fig. 3 to 6 and 10 in combination, in an embodiment of the arc extinguishing chamber 100 of the present invention, a boss 12 is disposed on a top surface of the top plate 10, the boss 12 is disposed around the connecting hole 11, and the connecting member 40 sequentially penetrates through the connecting hole 11 and the boss 12.
In this embodiment, when the number of the connection holes 11 is provided in plurality, the boss 12 is provided in plurality corresponding to the number of the connection holes 11.
If the arc-extinguishing chamber 100 is connected to the converter box body, when the arc-extinguishing chamber 100 is in contact with the converter box body through the whole top surface of the top plate 10, it is difficult to ensure that the whole top surface of the top plate 10 is in full contact with the converter box body, so that the arc-extinguishing chamber 100 cannot be stably installed on the converter box body; so, be provided with boss 12 through the top surface at roof 10, and make boss 12 encircle connecting hole 11 and set up, in the installation, alright pass connecting piece 40 in proper order connecting hole 11 and boss 12 and insert and establish on the fixed orifices of converter box, with connecting arc-extinguishing cover 100 on the converter box, so, alright make arc-extinguishing cover 100 be used for with the contact of converter box through the mesa of boss 12, with the area of contact of reduction arc-extinguishing cover 100 and converter box, thereby make arc-extinguishing cover 100 install on the converter box more easily stably.
In some embodiments, when the bottom surface and the top surface of the top plate 10 are respectively provided with the groove 14 and the boss 12, the connecting member 40 may sequentially pass through the groove 14, the connecting hole 11 and the boss 12 and be inserted into the fixing hole of the current transformer case during the installation process.
Further, referring to fig. 4 in combination, in an embodiment of the arc chute 100 of the present invention, the outer periphery of the side plate 20 has a mold release outer surface 22, and the mold release outer surface 22 is gradually inclined outward along the arrangement direction of the top plate 10 to the side plate 20.
With this arrangement, the arc chute 100 is manufactured by first pressing a raw material such as a mold at a predetermined pressure and temperature, then holding the pressure for a plurality of times to mold, and then removing the mold to take out the molded product. In order to ensure the normal pressing and good demolding of the mold, the mold release outer surface 22 of the side plate 20 is provided with a draft angle (e.g., 1.5 °) at the outer periphery thereof, that is, the mold release outer surface 22 of the side plate 20 is gradually inclined outward in the direction from the top plate 10 to the side plate 20, so that the arc chute 100 has a substantially tapered structure with a small top and a large bottom.
Further, referring to fig. 1 to 3 in combination, in an embodiment of the arc chute 100 of the present invention, the top plate 10 has a first rib 13 on the surface; in order to satisfy the thin shell design of the arc-extinguishing chamber 100, the length, width, height and thickness of the arc-extinguishing chamber 100 are generally designed to be 540mm × 300mm × 435mm, and the wall thickness is about 4mm, so that the structural rigidity of the side plate 20 can be increased by providing the first reinforcing rib 13 on the surface of the top plate 10, and reinforcing ribs are added on the inner and outer sides of the periphery of the side plate 20 and the top plate 10 to increase the overall structural rigidity.
Similarly, the structural rigidity of the top panel 10 can be increased by providing the second reinforcing beads 23 on the surface of the side panel 20.
Moreover, the joint of the top plate 10 and the side plate 20 and the edge position of the side plate 20 also need to be thickened and reinforced to prevent the shrinkage deformation of the whole structure after the demolding and the softening before the incomplete solidification.
Further, referring to fig. 1 to 6, in an embodiment of the arc-extinguishing chamber 100 of the present invention, the arc-extinguishing chamber 100 is a molded structure made of SMC insulating material.
The SMC is an English abbreviation of sheet, molding, compound, i.e., a sheet molding compound. The main raw materials comprise SMC special yarn, unsaturated resin, low shrinkage agent, filler and various auxiliaries. Compared with PC materials, SMC insulating materials have mechanical properties such as durability, bearing capacity, heat resistance and so on strong, and the condition such as crackle and fracture is difficult to appear in long-term use to through making arc-extinguishing chamber 100 be the structure of SMC insulating materials compression molding, can make arc-extinguishing chamber 100 have more excellent mechanical properties, electrical property and corrosion resisting property, and fire behavior is good, can satisfy the strict fireworks certification requirement of track traffic.
Further, referring to fig. 1 to 4, in an embodiment of the arc extinguishing chamber 100 of the present invention, a limiting platform 211 is protruded from an inner wall of the mounting opening 21, and a first engaging hole 211a is formed on a surface of the limiting platform 211; the arc-extinguishing chamber 100 further includes an insulating baffle 50 and a fastening member (not shown), the insulating baffle 50 covers the installation opening 21, an edge of the insulating baffle 50 abuts against a table surface of the limiting table 211, the insulating baffle 50 is provided with a second engaging hole, and the fastening member is inserted into the first engaging hole 211a through the second engaging hole.
So set up, after pushing the installation cavity of arc-extinguish chamber 100 with the circuit breaker at least part, through establishing insulating barrier 50 lid in the installing port 21 department of curb plate 20 to use the fastener to connect insulating barrier 50 on curb plate 20, alright make the inside of arc-extinguish chamber 100 (except the position of arc-extinguish chamber 100 bottom) form comparatively complete closed chamber, alright fully isolated circuit breaker break-make striking energy of production in the twinkling of an eye. Further, since the stopper 211 is provided on the inner wall of the mounting opening 21 so that the edge of the insulating shutter 50 abuts against the top surface of the stopper 211, the insulating shutter 50 can be quickly and stably coupled to the stopper 211 of the side plate 20 by the engagement of the fastener with the first fitting hole 211a and the second fitting hole.
In this embodiment, the first tabling hole 211a on the spacing platform 211 is the blind hole, that is, the first tabling hole 211a can not communicate to the installation cavity of arc chute 100, so, in the installation, the fastener passes the second tabling hole and inserts and establish behind first tabling hole 211a, and the fastener can not stretch into the installation cavity, alright avoid metal fastener to expose in the position of the arc spraying ionized gas of circuit breaker, avoided electrically conductive conducting the harm that switches on.
In addition, in order to facilitate the user to install the circuit breaker from different directions, the front side and the rear side of the side plate 20 may be provided with two installation openings 21, and correspondingly, the two insulation baffles 50 and the two fasteners are also correspondingly provided, so that after the circuit breaker is pushed into the installation cavity through any installation opening 21, the two insulation baffles 50 can be respectively covered at the two installation openings 21, and the insulation baffles 50 are respectively connected to the side plate 20 through the two fasteners.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An arc chute, comprising:
the top plate is used for being connected with the converter box body;
the side plate is integrally formed at the bottom of the top plate and arranged around the top plate so as to be enclosed with the top plate to form an installation cavity, the side plate is provided with a front side and a rear side which are arranged oppositely, an installation opening communicated with the installation cavity is formed in the front side and/or the rear side of the side plate, and the installation opening is used for at least partially installing the circuit breaker into the installation cavity.
2. The arc chute of claim 1 wherein the bottom surface of the top plate has a connection hole extending therethrough to the top surface, the arc chute further comprising a connector member extending through the connection hole and adapted to connect to the converter housing.
3. The arc chute of claim 2 wherein the bottom surface of the top plate is provided with a groove, the connecting hole penetrates through the groove bottom of the groove, the connecting member penetrates through the groove and the connecting hole in sequence, and the connecting member at least partially abuts against the groove bottom of the groove.
4. The arc chute of claim 3 further comprising a plug disposed at an end of the connector exposed to the recess.
5. The arc chute according to claim 4 wherein said plug comprises a connection sleeve and a blocking cover, said connection sleeve is inserted into said groove and sleeved on said connecting member, said blocking cover is connected to one end of said connection sleeve and covers one end of said connecting member exposed from said groove; and one side of the blocking cover back to the connecting sleeve is provided with a wrench hole.
6. The arc chute of claim 2 wherein a boss is provided on the top surface of the top plate, the boss is disposed around the attachment hole, and the attachment member is sequentially inserted through the attachment hole and the boss.
7. The arc chute of any one of claims 1 to 6 wherein the outer periphery of the side plate has a knockout outer surface which is disposed gradually outwardly inclined in the direction of disposition of the top plate to the side plate.
8. The arc chute of any one of claims 1 to 6 wherein the top plate is provided with a first bead on its surface;
and/or a second reinforcing rib is arranged on the surface of the side plate.
9. The arc chute of any one of claims 1 to 6 wherein the arc chute is a SMC insulating material molded structure.
10. The arc extinguish chamber according to any one of claims 1 to 6, wherein the inner wall of the mounting opening is convexly provided with a limiting platform, and the table surface of the limiting platform is provided with a first tabling hole; the arc extinguishing cover further comprises an insulating baffle and a fastener, the insulating baffle is arranged on the mounting opening in a covering mode, the edge of the insulating baffle abuts against the table top of the limiting table, the insulating baffle is provided with a second embedding hole, and the fastener penetrates through the second embedding hole and is inserted into the first embedding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221001632.6U CN217280668U (en) | 2022-04-27 | 2022-04-27 | Arc extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221001632.6U CN217280668U (en) | 2022-04-27 | 2022-04-27 | Arc extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217280668U true CN217280668U (en) | 2022-08-23 |
Family
ID=82877857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221001632.6U Active CN217280668U (en) | 2022-04-27 | 2022-04-27 | Arc extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217280668U (en) |
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2022
- 2022-04-27 CN CN202221001632.6U patent/CN217280668U/en active Active
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