CN213818096U - Fire control is sparse with high temperature resistant speaker - Google Patents
Fire control is sparse with high temperature resistant speaker Download PDFInfo
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- CN213818096U CN213818096U CN202120163062.XU CN202120163062U CN213818096U CN 213818096 U CN213818096 U CN 213818096U CN 202120163062 U CN202120163062 U CN 202120163062U CN 213818096 U CN213818096 U CN 213818096U
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- mounting
- fixedly connected
- stabilizing
- loudspeaker
- temperature resistant
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 51
- 230000017525 heat dissipation Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000005347 demagnetization Effects 0.000 abstract description 6
- 239000003381 stabilizer Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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Abstract
The utility model provides a fire control is sparse with high temperature resistant speaker, including mounting bracket and loudspeaker, the one end of loudspeaker is inserted in the mounting bracket and is rather than the inner wall sliding connection, the upper surface fixed connection of mounting bracket has two symmetrical support frames that set up, the upper surface of mounting bracket is provided with heat abstractor; the heat dissipation device comprises a stabilizing component and a heat dissipation component; the stabilizing assembly comprises mounting rods, the mounting rods are fixedly connected with the upper surface of the mounting frame, and the number of the mounting rods is four. The utility model is simple in operation, convenient to use, the current most speakers of current are installed on the ceiling, when meetting the conflagration, the speaker easily receives the condition that the demagnetization appears in the heat, causes the unable normal use of equipment, influences personnel's evacuation and management for equipment has certain potential safety hazard, and this device passes through water conservancy diversion leaf, heat conduction piece and stable cover and realizes going up thermal quick guide to loudspeaker, ensures that loudspeaker take place to be in stable in service state at the conflagration.
Description
Technical Field
The utility model relates to a fire control auxiliary assembly especially relates to an sparse high temperature resistant speaker that uses of fire control.
Background
Fire control is to eliminate hidden troubles and prevent disasters (i.e. to prevent and solve human, natural and accidental disasters in life, work and learning processes), and the narrow meaning of the fire control is that: meaning (extinguishing) fire. When the conflagration breaing out, can shouting through the speaker and guide people to evacuate and flee the scene of a fire, but present most speakers are installed on the ceiling, when meetting the conflagration, the condition of demagnetization appears in the speaker is easily heated, causes the unable normal use of equipment, influences personnel's evacuation and management for equipment has certain potential safety hazard, need improve this.
Disclosure of Invention
In view of the above prior art's shortcoming, the utility model aims at providing a fire control is sparse with anti high temperature speaker for solve among the prior art speaker condition of demagnetization appears being heated easily, cause the unable normal use of equipment problem.
In order to achieve the above objects and other related objects, the utility model provides a fire control is sparse with anti high temperature speaker, fire control is sparse with anti high temperature speaker includes: the loudspeaker comprises a mounting frame and a loudspeaker, wherein one end of the loudspeaker is inserted into the mounting frame and is in sliding connection with the inner wall of the mounting frame, two symmetrically arranged support frames are fixedly connected to the upper surface of the mounting frame, and a heat dissipation device is arranged on the upper surface of the mounting frame;
the heat dissipation device comprises a stabilizing component and a heat dissipation component;
the stabilizing assembly comprises four mounting rods, the four mounting rods are arranged in a mirror image mode, the upper surfaces of the mounting rods are fixedly connected with mounting blocks, the mounting blocks are sleeved and slidably connected with stabilizing sleeves, and one end of the horn is inserted into the stabilizing sleeves and is slidably connected with the inner walls of the horn;
the upper surface of the mounting rack is provided with a mounting device, and one end of the mounting device, which is far away from the mounting rack, is fixedly connected with the loudspeaker;
the mounting device comprises a control assembly and a positioning assembly.
Preferably, the lower fixed surface of installation piece is connected with the compression spring of four annular settings, the compression spring cover is established on the installation pole, compression spring keeps away from the one end of installation piece and the last fixed surface of stabilizing sleeve and is connected.
Preferably, the upper surface of the horn is fixedly connected with a heat conducting block, the heat conducting block is in a cross shape, the lower surface of the stabilizing sleeve is provided with a positioning groove, and one end, far away from the horn, of the heat conducting block is inserted into the positioning groove and is in sliding connection with the inner wall of the positioning groove.
Preferably, radiator unit includes the locating rack, the upper surface fixed connection of locating rack and stabilizing sleeve, the one end that stabilizing sleeve was kept away from to the locating rack and the inner wall sliding connection of installation piece, the inner wall fixedly connected with driving motor of locating rack, driving motor's drive end fixedly connected with water conservancy diversion leaf.
Preferably, the upper surface of water conservancy diversion leaf has seted up the water conservancy diversion hole, the lower fixed surface of water conservancy diversion leaf is connected with the cleaning brush, the one end that the cleaning brush kept away from the water conservancy diversion leaf and the surperficial sliding connection of stabilizing sleeve.
Preferably, locating component includes the transfer line, the transfer line rotates with the inner wall of mounting bracket to be connected, the last fixed surface of transfer line is connected with the drive wheel, the lower fixed surface of transfer line is connected with the pin, the fixed surface of loudspeaker is connected with two locating pieces, the pin is connected with the inner wall sliding connection of locating piece.
Preferably, the control assembly includes the stabilizer, the stabilizer is connected with the last fixed surface of mounting bracket, the quantity of stabilizer is two, two the stabilizer is the mirror image setting, the inner wall of stabilizer rotates and is connected with the transmission ring, the transmission ring is connected with the drive wheel meshing, the last surface rotation of stabilizer is connected with the locating wheel, the locating wheel is connected with the transmission ring meshing, the last fixed surface of stabilizer is connected with the link, the lower surface of link rotates and is connected with the locating lever, the one end and the locating wheel fixed connection of link are kept away from to the locating lever, the last fixed surface of locating wheel is connected with torsion spring, torsion spring keeps away from the one end and the link fixed connection of locating wheel.
As above, the utility model discloses a fire control is sparse with anti high temperature speaker has following beneficial effect at least: at present, install on the ceiling most present speakers, when meetting the conflagration, the speaker easily receives the condition that the demagnetization appears in the heat, cause the unable normal use of equipment, influence personnel's evacuation and management, make equipment have certain potential safety hazard, this device passes through the water conservancy diversion leaf, heat conduction piece and stable cover realize the thermal quick guide on loudspeaker, ensure that loudspeaker take place to be in stable user state at the conflagration, current most loudspeaker pass through the bolt or the mode of card establishing is installed fixedly at present, when equipment breaks down, be difficult to change it fast and maintain, increase the maintenance cost of equipment, be unfavorable for the normal use of equipment, this device realizes the quick replacement installation to loudspeaker through driving ring and pin, make equipment more easy-to-use.
Drawings
Fig. 1 is a schematic perspective view of the high temperature resistant speaker for fire evacuation according to the present invention.
Fig. 2 is a schematic top view of the fire evacuation high temperature resistant speaker of fig. 1 according to the present invention.
Fig. 3 shows an exploded view of the high temperature resistant speaker for fire evacuation according to the present invention.
Fig. 4 is a schematic structural view of the heat dissipation device of the fire evacuation high temperature resistant speaker of the present invention.
Fig. 5 is a schematic structural view of the installation device of the high temperature resistant speaker for fire evacuation according to the present invention.
Fig. 6 is a schematic structural diagram of the position a in fig. 5 of the high temperature resistant speaker for fire evacuation according to the present invention.
Description of the element reference numerals
1. A support frame; 2. a mounting frame; 3. a horn;
4. a heat sink; 411. a heat conducting block; 412. a stabilizing sleeve; 413. a compression spring; 414. mounting a rod; 415. mounting blocks; 421. a drive motor; 422. a guide vane; 423. cleaning a brush; 424. a positioning frame;
5. a mounting device; 511. a stop lever; 512. positioning blocks; 513. a drive wheel; 514. a transmission rod; 521. a connecting frame; 522. positioning a rod; 523. a torsion spring; 524. a drive ring; 525. positioning wheels; 526. and a stabilizing frame.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 6. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms "upper", "lower", "middle" and "one" are used in the present specification for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the corresponding parts may be changed or adjusted without substantial technical changes.
The following examples are for illustrative purposes only. The various embodiments may be combined, and are not limited to what is presented in the following single embodiment.
The first embodiment is as follows:
referring to fig. 1, the present invention provides a fire-fighting evacuation high temperature resistant speaker, including: the loudspeaker comprises a mounting frame 2 and a loudspeaker 3, wherein one end of the loudspeaker 3 is inserted into the mounting frame 2 and is connected with the inner wall of the mounting frame in a sliding manner, the upper surface of the mounting frame 2 is fixedly connected with two symmetrically arranged supporting frames 1, and the upper surface of the mounting frame 2 is provided with a heat dissipation device 4;
the heat dissipation device 4 comprises a stabilizing component and a heat dissipation component;
the stabilizing component comprises mounting rods 414, the mounting rods 414 are fixedly connected with the upper surface of the mounting frame 2, the number of the mounting rods 414 is four, the four mounting rods 414 are arranged in a mirror image manner, the upper surface of the mounting rods 414 is fixedly connected with mounting blocks 415, the mounting blocks 415 are sleeved with stabilizing sleeves 412 in a sliding connection mode, and one end of a horn 3 is inserted into the stabilizing sleeves 412 and is in sliding connection with the inner walls of the stabilizing sleeves;
the upper surface of the mounting frame 2 is provided with a mounting device 5, and one end of the mounting device 5 far away from the mounting frame 2 is fixedly connected with the loudspeaker 3;
the mounting device 5 comprises a control assembly and a positioning assembly.
Specifically, before the installation of the device, the heat conducting block 411 is aligned with the positioning slot and inserted, the stabilizing sleeve 412 is stressed to push the compression spring 413, the compression spring 413 is stressed to deform to generate elastic force, the compression spring 413 pushes the stabilizing sleeve 412 to be close to the heat conducting block 411 and the loudspeaker 3, the positioning frame 424 and the driving motor 421 are driven to move together in the displacement process of the stabilizing sleeve 412, when the temperature of the device is too high in use, the driving motor 421 is turned on, the driving motor 421 drives the flow guide vane 422 to rotate, the flow guide vane 422 drives air above the stabilizing sleeve 412 to flow rapidly, the heat dissipation of the stabilizing sleeve 412 is accelerated, the flow guide vane 422 drives the cleaning brush 423 to rotate, the cleaning brush 423 hangs down sundries on the upper surface of the stabilizing sleeve 412, the sundries are prevented from being accumulated to influence the heat dissipation of the device, the stable use of the device is ensured, most of the existing speakers are installed on a ceiling, and the speakers are prone to be subjected to the occurrence of heat demagnetization condition when a fire hazard occurs, cause the unable normal use of equipment, influence personnel's evacuation and management for equipment has certain potential safety hazard, and this device realizes being in stable user state at the conflagration emergence through water conservancy diversion leaf 422, heat conduction piece 411 and stable cover 412 to thermal quick guide on loudspeaker 3.
Referring to fig. 1 and 4, further, four compression springs 413 arranged in a ring shape are fixedly connected to the lower surface of the mounting block 415, the compression springs 413 are sleeved on the mounting rod 414, and one end of each compression spring 413 far away from the mounting block 415 is fixedly connected to the upper surface of the stabilizing sleeve 412.
Set up compression spring 413 for stable cover 412 and loudspeaker 3 are laminated steadily, ensure that equipment carries out stable heat dissipation to loudspeaker 3.
Referring to fig. 1 and 4, further, the upper surface of the horn 3 is fixedly connected with a heat conducting block 411, the heat conducting block 411 is in a cross shape, a positioning groove is formed in the lower surface of the stabilizing sleeve 412, and one end, far away from the horn 3, of the heat conducting block 411 is inserted into the positioning groove and is in sliding connection with the inner wall of the positioning groove.
The heat conducting block 411 is arranged, so that heat of the loudspeaker 3 can be quickly conducted to the stabilizing sleeve 412, and stable use of the device is ensured.
Referring to fig. 1 and 4, further, the heat dissipation assembly includes a positioning frame 424, the positioning frame 424 is fixedly connected to the upper surface of the stabilizing sleeve 412, one end of the positioning frame 424, which is far away from the stabilizing sleeve 412, is slidably connected to the inner wall of the mounting block 415, the inner wall of the positioning frame 424 is fixedly connected to a driving motor 421, and a driving end of the driving motor 421 is fixedly connected to a guide vane 422.
The driving motor 421 and the flow guide vane 422 are arranged, so that the equipment can conduct heat to the loudspeaker 3 quickly
Referring to fig. 1 and 4, further, the upper surface of the guide vane 422 is provided with a guide hole, the lower surface of the guide vane 422 is fixedly connected with a cleaning brush 423, and one end of the cleaning brush 423, which is far away from the guide vane 422, is slidably connected with the surface of the stabilizing sleeve 412.
The guide holes are arranged, so that the guide vanes 422 can quickly drive the air around the stabilizing sleeve 412 to quickly flow.
Referring to fig. 1 and 6, further, preferably, the positioning assembly includes a transmission rod 514, the transmission rod 514 is rotatably connected to the inner wall of the mounting frame 2, a driving wheel 513 is fixedly connected to the upper surface of the transmission rod 514, a stop lever 511 is fixedly connected to the lower surface of the transmission rod 514, two positioning blocks 512 are fixedly connected to the surface of the horn 3, and the stop lever 511 is slidably connected to the inner walls of the positioning blocks 512.
The positioning block 512 and the stop lever 511 facilitate quick fixing of the horn 3.
Referring to fig. 1 and 6, further, the control assembly includes two stabilizing frames 526, the stabilizing frames 526 are fixedly connected to the upper surface of the mounting frame 2, the two stabilizing frames 526 are arranged in a mirror image manner, the inner wall of the stabilizing frames 526 is rotatably connected to a transmission ring 524, the transmission ring 524 is meshed with the driving wheel 513, the upper surface of the stabilizing frames 526 is rotatably connected to a positioning wheel 525, the positioning wheel 525 is meshed with the transmission ring 524, the upper surface of the stabilizing frames 526 is fixedly connected to a connecting frame 521, the lower surface of the connecting frame 521 is rotatably connected to a positioning rod 522, one end of the positioning rod 522, which is far away from the connecting frame 521, is fixedly connected to the positioning wheel 525, the upper surface of the positioning wheel 525 is fixedly connected to a torsion spring 523, and one end of the torsion spring 523, which is far away from the positioning wheel 525, is fixedly connected to the connecting frame 521.
Specifically, when the speaker 3 is installed, the stop lever 511 is rotated, the stop lever 511 immediately drives the transmission rod 514 and the driving wheel 513 to rotate, the driving wheel 513 immediately drives the transmission ring 524 to rotate, the transmission ring 524 immediately drives the positioning wheel 525 and the other driving wheel 513 to rotate, the torsion spring 523 immediately deforms under force to generate elastic force, the speaker 3 is inserted into the mounting frame 2, the speaker 3 is positioned through the heat conduction block 411, when the positioning block 512 abuts against the mounting frame 2, the stop lever 511 is released, the torsion spring 523 loses the constraint, the torsion spring 523 drives the positioning wheel 525 to rotate, the positioning wheel 525 immediately drives the transmission ring 524 to rotate, the transmission ring 524 immediately drives the two driving wheels 513 to rotate in the opposite direction, the driving wheel 513 immediately drives the stop lever 511 to be inserted into the positioning block 512 through the transmission rod 514, the fixing of the speaker 3 is completed, most of the existing speakers 3 are installed and fixed through bolts or a clamping manner, when equipment broke down, be difficult to change it fast and maintain, increased the maintenance cost of equipment, be unfavorable for the normal use of equipment, this device realizes the quick replacement installation to loudspeaker 3 through driving ring 524 and pin 511, makes equipment more easy-to-use.
In conclusion, the utility model is simple in operation, convenient to use, install on the ceiling at present most speakers, when meetting the conflagration, the speaker easily receives the hot condition that the demagnetization appears, cause the unable normal use of equipment, influence personnel's evacuation and management, make equipment have certain potential safety hazard, this device passes through water conservancy diversion leaf 422, heat conduction piece 411 and stable cover 412 realize going up thermal quick guide to loudspeaker 3, ensure that loudspeaker 3 takes place to be in stable user state in the conflagration, it is fixed that current most loudspeaker 3 install through bolt or the mode of card establishing, when equipment breaks down, be difficult to change it fast and maintain, increase the maintenance cost of equipment, be unfavorable for the normal use of equipment, this device passes through driving ring 524 and pin 511 and realizes the quick replacement installation to loudspeaker 3, make equipment more easy-to-use. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A fire-fighting evacuation high-temperature resistant speaker, comprising: the loudspeaker comprises a mounting frame (2) and a loudspeaker (3), wherein one end of the loudspeaker (3) is inserted into the mounting frame (2) and is in sliding connection with the inner wall of the mounting frame, two symmetrically arranged support frames (1) are fixedly connected to the upper surface of the mounting frame (2), and a heat dissipation device (4) is arranged on the upper surface of the mounting frame (2);
the heat dissipation device (4) comprises a stabilizing component and a heat dissipation component;
the stabilizing assembly comprises mounting rods (414), the mounting rods (414) are fixedly connected with the upper surface of the mounting frame (2), the number of the mounting rods (414) is four, the four mounting rods (414) are arranged in a mirror image manner, the upper surface of each mounting rod (414) is fixedly connected with a mounting block (415), each mounting block (415) is sleeved with a stabilizing sleeve (412) and is connected with the stabilizing sleeve in a sliding manner, and one end of the horn (3) is inserted into the stabilizing sleeve (412) and is connected with the inner wall of the horn in a sliding manner;
the mounting device (5) is arranged on the upper surface of the mounting rack (2), and one end, far away from the mounting rack (2), of the mounting device (5) is fixedly connected with the loudspeaker (3);
the mounting device (5) comprises a control component and a positioning component.
2. The fire evacuation high temperature resistant speaker of claim 1, wherein: the lower surface fixedly connected with of installation piece (415) compression spring (413) that four rings shape set up, compression spring (413) cover is established on installation pole (414), compression spring (413) keep away from the one end of installation piece (415) and the upper surface fixed connection of stabilizing sleeve (412).
3. The fire evacuation high temperature resistant speaker of claim 1, wherein: the upper surface fixedly connected with heat conduction piece (411) of loudspeaker (3), heat conduction piece (411) are "ten" shape, the constant head tank has been seted up to the lower surface of stabilizing sleeve (412), the one end that heat conduction piece (411) kept away from loudspeaker (3) inserts in the constant head tank and rather than inner wall sliding connection.
4. The fire evacuation high temperature resistant speaker of claim 1, wherein: radiator unit includes locating rack (424), the last fixed surface of locating rack (424) and stable cover (412) is connected, the inner wall sliding connection of one end and installation piece (415) of stable cover (412) is kept away from in locating rack (424), the inner wall fixedly connected with driving motor (421) of locating rack (424), the drive end fixedly connected with water conservancy diversion leaf (422) of driving motor (421).
5. The fire evacuation high temperature resistant speaker of claim 4, wherein: the upper surface of water conservancy diversion leaf (422) has seted up the water conservancy diversion hole, the lower surface fixedly connected with cleaning brush (423) of water conservancy diversion leaf (422), the one end that water conservancy diversion leaf (422) were kept away from in cleaning brush (423) and the surperficial sliding connection of stabilizing sleeve (412).
6. The fire evacuation high temperature resistant speaker of claim 1, wherein: locating component includes transfer line (514), transfer line (514) is connected with the inner wall rotation of mounting bracket (2), the last fixed surface of transfer line (514) is connected with drive wheel (513), the lower fixed surface of transfer line (514) is connected with pin (511), the fixed surface of loudspeaker (3) is connected with two locating pieces (512), pin (511) and the inner wall sliding connection of locating piece (512).
7. The fire evacuation high temperature resistant speaker of claim 6, wherein: the control assembly comprises stabilizing frames (526), the stabilizing frames (526) are fixedly connected with the upper surface of the mounting frame (2), the number of the stabilizing frames (526) is two, the two stabilizing frames (526) are arranged in a mirror image mode, the inner wall of each stabilizing frame (526) is rotatably connected with a transmission ring (524), the transmission ring (524) is meshed with the driving wheel (513) and is connected with a positioning wheel (525), the upper surface of each stabilizing frame (526) is rotatably connected with a positioning wheel (525), the positioning wheel (525) is meshed with the transmission ring (524) and is connected with a connecting frame (521), the lower surface of each connecting frame (521) is rotatably connected with a positioning rod (522), one end, far away from the connecting frame (521), of each positioning rod (522) is fixedly connected with the positioning wheel (525), and the upper surface of each positioning wheel (525) is fixedly connected with a torsion spring (523), one end of the torsion spring (523) far away from the positioning wheel (525) is fixedly connected with the connecting frame (521).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120163062.XU CN213818096U (en) | 2021-01-21 | 2021-01-21 | Fire control is sparse with high temperature resistant speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120163062.XU CN213818096U (en) | 2021-01-21 | 2021-01-21 | Fire control is sparse with high temperature resistant speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213818096U true CN213818096U (en) | 2021-07-27 |
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ID=76950285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120163062.XU Expired - Fee Related CN213818096U (en) | 2021-01-21 | 2021-01-21 | Fire control is sparse with high temperature resistant speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213818096U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116111490A (en) * | 2022-12-26 | 2023-05-12 | 上海蓝箭电控设备南通有限公司 | Switch board with urgent outage function |
-
2021
- 2021-01-21 CN CN202120163062.XU patent/CN213818096U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116111490A (en) * | 2022-12-26 | 2023-05-12 | 上海蓝箭电控设备南通有限公司 | Switch board with urgent outage function |
| CN116111490B (en) * | 2022-12-26 | 2023-12-22 | 上海蓝箭电控设备南通有限公司 | Switch board with urgent outage function |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |