CN116844890A - High-voltage explosion-proof switch - Google Patents
High-voltage explosion-proof switch Download PDFInfo
- Publication number
- CN116844890A CN116844890A CN202310825570.3A CN202310825570A CN116844890A CN 116844890 A CN116844890 A CN 116844890A CN 202310825570 A CN202310825570 A CN 202310825570A CN 116844890 A CN116844890 A CN 116844890A
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- Prior art keywords
- explosion
- arm
- proof
- shell
- proof switch
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- 238000005192 partition Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The application discloses a high-voltage explosion-proof switch, which comprises an explosion-proof box body and a machine core arranged in the explosion-proof box body, wherein the explosion-proof box body comprises a shell, a box door and a rear cover, a box body partition board is arranged in the shell and is used for installing a static contact seat, a protection plate is arranged in the shell and is used for shielding the static contact seat, a linkage mechanism linked with the protection plate is arranged on the shell, an opening and closing structure is arranged between the shell and the machine core, and a locking piece is arranged between the shell and the box door. According to the high-voltage explosion-proof switch, through the linkage mechanism, the opening and closing structure and the locking piece, in the operation process, when the door needs to be opened and is in the door opening state, the isolating switch on the explosion-proof switch cannot be closed, the whole explosion-proof switch is in the power-off state, and only after the door is closed and is in the door locking state, the operating rod can be rotated to carry out closing operation on the isolating switch, so that safety of operators in the fault removal and maintenance processes is ensured.
Description
Technical Field
The application relates to the technical field of electric switches, in particular to a high-voltage explosion-proof switch.
Background
The mining high-voltage explosion-proof switch is suitable for a high-voltage circuit under a coal mine, particularly is used as a main switch and a branch switch in a 6KV-10KV power supply system, has the functions of overload, short circuit, undervoltage, leakage protection and the like, and is provided with a connecting mechanism which can operate an isolating switch in the explosion-proof shell by an operating handle of the isolating switch outside the explosion-proof shell so as to ensure that the explosion-proof switch meets the requirements of general safety technical requirements of the underground power supply system and equipment of the coal mine when the explosion-proof switch has trouble-shooting or regular overhaul period: "when the power is on, the cover cannot be opened, and after the cover is opened, the power cannot be turned on".
According to the operation requirement of the high-voltage explosion-proof switch, when the feed power supply is connected, the explosion-proof shell cover cannot be opened, the power supply cannot be connected after the explosion-proof shell cover is opened, however, the existing high-voltage explosion-proof switch is powered off and powered on through an operation handle, the door of the explosion-proof shell is locked and unlocked through a door lock, so that the explosion-proof door is opened and the high-voltage explosion-proof switch is powered off for two operations, misoperation or illegal operation is caused for underground electricians, the mining explosion-proof switch power supply is opened in an electrified mode, so that the mining explosion-proof switch power supply has a large safety risk, and the problem is solved by means of supervision by special personnel and on-site prompt boards in the prior art, and the problem still exists.
The application patent application with publication number CN110335768A, named as a switching locking feed switch, publication date 2019, 10 month and 14 days comprises a body, wherein at least two static joints are arranged on the body and are respectively connected with an incoming line and an outgoing line; the movable connector is connected to the circuit breaker and is slidably arranged on the body; the switch is characterized by further comprising a change-over switch connected to the outgoing line and a bolt pointing to the change-over switch, wherein the bolt is slidably arranged on the body, a groove for inserting the bolt is formed in a knob of the change-over switch, and if and only if the knob of the change-over switch is screwed to a power-off state, the groove is opposite to the bolt, and the bolt can be inserted into the groove; the movable joint is connected with the fixed joint through the pin, and the movable joint is connected with the fixed joint through the pin.
For another example, the publication number is CN108389755a, the name is "a mining flameproof permanent magnet vacuum feed switch", the publication date is the application patent application of 2018, 8 and 10, and the application patent application comprises a plug-in type main loop connection component socket and a core connection component plug which are arranged in an explosion-proof switch shell, the socket is arranged in the explosion-proof switch shell, the plug is arranged on the other side of the socket, which is correspondingly plugged in, when the plug is plugged into the socket, the switch core is communicated with the main loop, the switch is in a closing state, and the explosion-proof switch further comprises a lifting device and a safety protection device.
Although the above disclosed technology discloses a corresponding solution, the driving mechanism, the lifting device and the structure linked with the driving mechanism and the lifting device clearly make the structure more complex and increase the manufacturing difficulty and the manufacturing cost, so that the use cost is increased, and meanwhile, the difficulty of maintenance is clearly increased due to the complexity of the structure. Based on the above, how to solve the problem of misoperation through a simple structure and control the manufacturing cost at the same time is the problem to be solved by the application.
Disclosure of Invention
The application aims to provide a high-voltage explosion-proof switch so as to solve the defects in the prior art.
In order to achieve the above object, the present application provides the following technical solutions:
the utility model provides a high-voltage explosion-proof switch, includes the flame proof box and installs the core in the flame proof box through slide rail structure, the flame proof box includes the casing, sets up chamber door, the back lid on the casing, its characterized in that still includes:
a case partition provided in the case, the case partition dividing the case into a first case and a second case;
the static contact seat is arranged on the box body partition plate;
the protection plate is arranged on the box body partition plate and used for shielding the static contact seat;
a linkage mechanism disposed between the shield plate and the first housing;
the opening and closing structure is arranged between the movement and the first shell;
the first shell is externally provided with a locking piece.
Preferably, the linkage comprises a push rod, a rotary arm and a support arm.
Preferably, one end of the push rod extends through an annular ring arranged on the first shell to the outside of the first shell, and the other end of the push rod is rotatably connected with one end of the rotating arm.
Preferably, the rotating arm is in an L-shaped structure, and is rotatably connected to the inner wall of the first housing at a corner thereof; the other end of the rotating arm is rotationally connected with one end of the supporting arm, and the other end of the supporting arm is rotationally connected with the protection plate.
Preferably, the middle position of the supporting arm is rotatably connected to the box body partition board; the end, connected with the rotary arm, of the support arm is longitudinally bent to form an end head towards the rotary arm, and the rotary arm is rotatably connected to the end head.
Preferably, the guard plate is provided with a bar-shaped hole, and the box body partition plate is provided with a positioning rod corresponding to the guard plate.
Preferably, the opening and closing structure includes: one end of the first arm rod is rotationally connected to one side of the movement, the other end of the first arm rod is rotationally connected with the second arm rod, a rotating shaft fixedly connected with the second arm rod, and an operating rod fixedly connected with the outer portion of the first shell, wherein the rotating shaft penetrates through the first shell.
Preferably, a locking piece is arranged outside the first shell, and comprises a spring, a base and a locking rod; the base is a cavity with through holes at two ends, which is fixed on the outer side of the first shell through bolts.
Preferably, the locking rod is provided with a baffle plate and a deflector rod
Preferably, the operating rod is fixedly connected with the rotating shaft, and is also fixedly connected with a round cake, and the round cake is provided with a pointer and a bayonet.
In the technical scheme, the high-voltage explosion-proof switch comprises an explosion-proof box body and a machine core arranged in the explosion-proof box body through a sliding rail structure, wherein the explosion-proof box body comprises a shell, a box door and a rear cover, wherein the box door and the rear cover are arranged on the shell, a box partition plate is arranged in the shell and used for installing a static contact seat, a protection plate is arranged for shielding the static contact seat, a linkage mechanism linked with the protection plate is arranged on the shell, an opening and closing structure is arranged between the shell and the machine core, a locking piece is arranged between the shell and the box door, so that the isolating switch on the explosion-proof switch cannot be closed when the box door is required to be opened in a door opening state in an operation process, and the whole explosion-proof switch is in a power-off state.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a high-voltage explosion-proof switch according to another embodiment of the present application;
FIG. 2 is a schematic structural diagram of a linkage mechanism according to another embodiment of the present application;
FIG. 3 is a schematic structural diagram of an opening and closing structure according to another embodiment of the present application;
FIG. 4 is a schematic view of a latch according to still another embodiment of the present application;
reference numerals illustrate:
the anti-explosion device comprises an anti-explosion box body 1, a machine core 2, a box body partition plate 3, a fixed contact seat 4, a protection plate 5, a linkage mechanism 6, a rotating shaft 7, an operating rod 8, an opening and closing structure 9 and a locking piece 10;
a shell 11, a box door 12, a rear cover 13 and a round cake 14;
a first housing 11.1, a second housing 11.2;
an annular hole 11.11 and an observation window 11.12;
a first arm 91 and a second arm 92;
a positioning rod 31;
a bar-shaped hole 51;
pushrod 61, swivel arm 62, support arm 63, tip 631;
spring 10.1, base 10.2, locking lever 10.3, baffle 10.4, deflector rod 10.5;
through hole 10.21, cavity 10.22;
pointer 14.1, bayonet 14.2;
a pole 41.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the high voltage explosion-proof switch provided by the embodiment of the application includes an explosion-proof box 1 and a movement 2 installed in the explosion-proof box through a sliding rail structure, where the explosion-proof box 1 includes a housing 11, a door 12 disposed on the housing, and a rear cover 13, and is characterized in that the switch further includes:
a case partition 3 provided in the case 11, the case partition 3 dividing the case 11 into a first case 11.1 and a second case 11.2;
the fixed contact seat 4 is arranged on the box body partition plate 3;
the protection plate 5 is arranged on the box body partition plate 3 and used for shielding the fixed contact seat 4;
a linkage mechanism 6 provided between the guard plate 5 and the first housing 11.1;
an opening and closing structure 9 provided between the movement 2 and the first casing 11.1;
the first housing 11.1 is also provided with a locking element 10.
Specifically, the case partition 3 divides the case 11 into a first case 11.1 and a second case 11.2; the second casing 11.2 is as the wiring chamber, and first casing 11.1 is as the main cavity, and core 2 slide rail structure is installed in first casing 11.1, and slide rail structure is prior art, and not repeated, electrical components all install on core 2, including the utmost point post 41 of grafting stationary contact seat 4.
In this embodiment, when the door 12 needs to be opened and is in a door opening state, only the operating lever 8 needs to be rotated, and the movement 2 is driven to slide by the opening and closing structure 9, so that the pole 41 is separated from the fixed contact seat 4, and the disconnection of the isolating switch is realized; at this time, the locking member 10 is unlocked, and the door 12 can be opened; when the door 12 is opened, the linkage mechanism 6 loses the acting force of the door 12, and the protection plate 5 moves downwards under the action of self gravity to shield the fixed contact seat 4, so that the situation that the isolating switch is closed by misoperation of the operating rod 8 or manual pushing of the movement 2 in the door opening state is effectively prevented, namely the pole 41 is inserted into the fixed contact seat 4.
In the embodiment provided by the application, the linkage mechanism 6 comprises a push rod 61, a rotating arm 62 and a supporting arm 63.
One end of the push rod 61 extends through an annular ring 11.11 provided on the first housing 11.1 to the outside of the first housing 11.1, and the other end of the push rod 61 is rotatably connected to one end of the rotary arm 62.
The rotating arm 62 has an L-shaped structure, and the rotating arm 62 is rotatably connected to the inner wall of the first housing 11.1 at the corner thereof; the other end of the rotating arm 62 is rotatably connected to one end of the supporting arm 63, and the other end of the supporting arm 63 is rotatably connected to the protection plate 5.
The middle position of the supporting arm 63 is rotatably connected to the box partition plate 3; the end of the support arm 63 connected to the rotation arm 62 is bent longitudinally toward the rotation arm 62 to form a tip 631, and the rotation arm 62 is rotatably connected to the tip 631.
Specifically, when the box door 12 is in a closed state, the box door 12 abuts against the end part of the push rod 61 extending out of the first shell 11.1, so that the push rod 61 drives the rotating arm 62 to rotate, the connecting end of the rotating arm 62 and the supporting arm 63 is driven to move downwards, and the connecting end of the supporting arm 63 and the protection plate 5 is driven to move upwards, thereby lifting the protection plate 5 and leaking the static contact seat 4.
When the box door 12 is opened, the push rod 61 is not pressed by the box door 12 any more, and the protection plate 5 moves downwards under the action of self gravity to shield the fixed contact seat 4, so that the situation that the isolating switch is closed by misoperation of the operating rod 8 or manual pushing of the machine core 2 in the opening state is effectively prevented, namely the pole column 41 is inserted into the fixed contact seat 4.
In the embodiment provided by the application, the guard plate 5 is provided with a strip-shaped hole 51, and the box body partition plate 3 is provided with a positioning rod 31 corresponding to the guard plate 5.
Specifically, when the door 12 is opened, the push rod 61 is not pressed by the door 12 any more, and the purpose of downward movement of the protection plate 5 under the action of gravity is to shield the fixed contact seat 4, prevent the post 41 from being inserted into the fixed contact seat 4 due to misoperation, and the positioning rod 31 can effectively limit the movement distance of the protection plate 5 and prevent the left-right offset of the protection plate 5.
In the embodiment provided by the present application, the opening and closing structure 9 includes: one end of the first arm rod 91 is rotatably connected to one side of the movement 2, the other end of the first arm rod 91 is rotatably connected to the second arm rod 92, the rotating shaft 7 fixedly connected to the second arm rod 92, and the operating rod 8 fixedly connected to the outside of the first casing 11.1 and penetrating through the first casing 11.1 by the rotating shaft 7.
Specifically, the rotating shaft 7 passes through the first housing 11.1 and rotates in the first housing 11.1, and the rotating shaft 7 may be connected to the first housing 11.1 through bearing connection or other rotatable connection modes, which is specifically in the prior art, and will not be described in detail.
Through the rotation of the operating lever 8, the rotation of the first arm lever 91 is driven, so that the change of the included angle between the first arm lever 91 and the second arm lever 92 is realized, and the movement 2 is driven to slide on the sliding rail structure.
It should be noted that the connection between the movement 2 and the first arm 91 is a movable rotational connection, and after the door is opened, the connection between the movement 2 and the first arm 91 may be opened, so that the movement 2 may be moved out of the housing 11. The connection of movement 2 to first arm 91 may be a movable pin connection, or may be another movable and rotatable connection such as a bolt.
In the embodiment provided by the application, a locking piece 10 is arranged outside the first shell 11.1, and the locking piece 10 comprises a spring 10.1, a base 10.2 and a locking rod 10.3; the base 10.2 is a cavity 10.22 with through holes 10.21 at both ends fixed on the outer side of the first shell 11.1 by bolts.
Preferably, the blocking rod 10.3 is provided with a baffle plate 10.4 and a deflector rod 10.5
Preferably, the operating lever 8 is fixedly connected with the rotating shaft 7, and is also fixedly connected with a cake 14, and the cake 14 is provided with a pointer 14.1 and a bayonet 14.2.
Specifically, the blocking rod 10.3 is provided with a baffle plate 10.4, the baffle plate is located in the cavity 10.22, the spring 10.1 is sleeved on the locking rod 10.3, one end of the spring is propped against the end face of the cavity 10.22 adjacent to the door 12, the other end of the spring is propped against the baffle plate 10.4, under the action of the spring 10.1, one end, adjacent to the door 12, of the locking rod 10.3 is flush with the through hole 10.21, and the deflector rod 10.5 is arranged on the rod at the other end of the locking rod 10.3.
When the door 12 is in a closed state, one end of the locking rod 10.3 adjacent to the door 12 extends out of the through hole 10.21 for limiting the opening of the door 12, the spring 10.1 is in a compressed state, and the other end of the locking rod 10.3 abuts against the circle of the cake 14.
When the door 12 needs to be opened, the operating rod 8 is rotated, the locking rod 10.3 slides on the circle of the round cake 14, and when the pointer 14.1 points to the nameplate on the shell 11 to be disconnected, the opening and closing structure 9 is indicated to disconnect the pole 41 of the movement 2 from the fixed contact base 4.
At this time, the locking rod 10.3 just slides to the bayonet 14.2 on the cake 14, and the locking rod 10.3 stretches into the bayonet 14.2 under the action of the spring 10.1, so that the cake 14 cannot rotate, and the locking of the operating rod 8 is realized while the door 12 is unlocked.
At this time, if the door 12 is opened, the linkage mechanism 6 moves downward under the action of gravity of the protection plate 5 to shield the static contact seat 4 under the condition that the door 12 is not pressed.
Therefore, only when the box door 12 is closed, the box door 12 pushes the push rod 61 to drive the rotary arm 62 to rotate, and the connecting end of the rotary arm 62 and the supporting arm 63 is driven to move downwards, so that the connecting end of the supporting arm 63 and the protection plate 5 moves upwards, the lifting of the protection plate 5 is realized, the protection plate 5 is separated from the protection state, and the static contact seat 4 is leaked.
Even if the door 12 is closed, if the door 12 is not locked, the isolating switch cannot be closed, that is, the pole 41 of the movement 2 and the fixed contact seat 4 cannot be closed. Specifically, when the door 12 is closed, the operating lever 8 can be turned only by manually moving the shift lever 10.5 to disengage the locking lever 10.3 from the bayonet 14.2, and the other end of the locking lever 10.3 is locked to the door 12 as long as the locking lever 10.3 is disengaged from the bayonet 14.2.
The application provides a high-voltage explosion-proof switch, which comprises an explosion-proof box body and a core arranged in the explosion-proof box body through a sliding rail structure, wherein the explosion-proof box body comprises a shell, a box door and a rear cover, wherein the box door and the rear cover are arranged on the shell, a box partition plate is arranged in the shell and used for installing a static contact seat, a protection plate is arranged for shielding the static contact seat, a linkage mechanism linked with the protection plate is arranged on the shell, an opening and closing structure is arranged between the shell and the core, a locking piece is arranged between the shell and the box door, so that the isolating switch on the explosion-proof switch cannot be closed when the box door needs to be opened in a door opening state in an operation process, and the whole explosion-proof switch is in a power-off state.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (10)
1. The utility model provides a high pressure explosion-proof switch, includes explosion-proof box (1) and installs core (2) in the explosion-proof box through the slide rail structure, explosion-proof box (1) include casing (11), set up chamber door (12), back lid (13) on the casing, its characterized in that still includes:
a case partition plate (3) provided in the case (11), the case partition plate (3) dividing the case (11) into a first case (11.1) and a second case (11.2);
a stationary contact seat (4) arranged on the box body partition board (3);
the protection plate (5) is arranged on the box body partition plate (3) and used for shielding the static contact seat (4);
a linkage mechanism (6) arranged between the protection plate (5) and the first housing (11.1);
an opening and closing structure (9) arranged between the movement (2) and the first casing (11.1);
a locking piece (10) is arranged outside the first shell (11.1).
2. The high voltage explosion-proof switch according to claim 1, wherein the linkage (6) comprises a push rod (61), a rotary arm (62) and a support arm (63).
3. The high voltage explosion-proof switch according to claim 2, wherein one end of the push rod (61) extends through an annular ring (11.11) provided on the first housing (11.1) to the outside of the first housing (11.1), and the other end of the push rod (61) is rotatably connected to one end of the rotary arm (62).
4. A high voltage explosion-proof switch according to claim 3, wherein the rotary arm (62) has an L-shaped structure, the rotary arm (62) being rotatably connected at its corners to the inner wall of the first housing (11.1); the other end of the rotating arm (62) is rotatably connected with one end of the supporting arm (63), and the other end of the supporting arm (63) is rotatably connected to the protection plate (5).
5. The high-voltage explosion-proof switch according to claim 4, wherein the middle position of the supporting arm (63) is rotatably connected to the box body partition board (3); one end of the supporting arm (63) connected with the rotating arm (62) is longitudinally bent to the rotating arm (62) to form a tip (631), and the rotating arm (62) is rotatably connected to the tip (631).
6. The high-voltage explosion-proof switch according to claim 4, wherein the protection plate (5) is provided with a strip-shaped hole (51), and the box body partition plate (3) is provided with a positioning rod (31) corresponding to the protection plate (5).
7. The high-voltage explosion-proof switch according to claim 1, wherein the opening and closing structure (9) comprises: a first arm lever (91) with one end rotatably connected to one side of the movement (2), and a second arm lever (92) with the other end rotatably connected to the first arm lever (91);
the rotating shaft (7) is fixedly connected with the second arm rod (92), and the rotating shaft (7) penetrates through the first shell (11.1) and is fixedly connected with the operating rod (8) outside the first shell (11.1).
8. The high-voltage explosion-proof switch according to claim 7, wherein the latch (10) comprises a spring (10.1), a base (10.2) and a latch lever (10.3); the base (10.2) is a cavity (10.22) which is fixed on the outer side of the first shell (11.1) through bolts and provided with through holes (10.21) at two ends.
9. The high-voltage explosion-proof switch according to claim 8, wherein a baffle (10.4) and a deflector rod (10.5) are arranged on the locking rod (10.3).
10. The high-voltage explosion-proof switch according to claim 7, wherein the operating rod (8) is fixedly connected with the rotating shaft (7), a round cake (14) is also fixedly connected with the operating rod, and a pointer (14.1) and a bayonet (14.2) are arranged on the round cake (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310825570.3A CN116844890A (en) | 2023-07-06 | 2023-07-06 | High-voltage explosion-proof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310825570.3A CN116844890A (en) | 2023-07-06 | 2023-07-06 | High-voltage explosion-proof switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116844890A true CN116844890A (en) | 2023-10-03 |
Family
ID=88159683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310825570.3A Pending CN116844890A (en) | 2023-07-06 | 2023-07-06 | High-voltage explosion-proof switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116844890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117976446A (en) * | 2024-03-29 | 2024-05-03 | 山西阳光三极科技股份有限公司 | Explosion-proof shell uncap power-off protection device |
-
2023
- 2023-07-06 CN CN202310825570.3A patent/CN116844890A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117976446A (en) * | 2024-03-29 | 2024-05-03 | 山西阳光三极科技股份有限公司 | Explosion-proof shell uncap power-off protection device |
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