CN213953333U - Manual opening device for electric door - Google Patents
Manual opening device for electric door Download PDFInfo
- Publication number
- CN213953333U CN213953333U CN202022720704.XU CN202022720704U CN213953333U CN 213953333 U CN213953333 U CN 213953333U CN 202022720704 U CN202022720704 U CN 202022720704U CN 213953333 U CN213953333 U CN 213953333U
- Authority
- CN
- China
- Prior art keywords
- gear
- sliding
- rod
- state
- electrically operated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000000926 separation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
Images
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The application relates to a manual opening device for electric door belongs to security protection engineering's field, and manual opening device for electric door includes: the shell is arranged at one end of the electric door and forms an accommodating cavity with an opening at one end; the sliding rack is arranged between the shell and the electric door; the driving motor is arranged in the accommodating cavity and is provided with a driving gear, and the driving motor is detachably connected with the driving gear through a driving motor shaft; the gear mounting plate is provided with a first driven gear, and the gear mounting plate is pivotally connected with a driving motor shaft so that the first driven gear can move between a first state and a second state. This application has changed traditional electrically operated gate only through the closed mode of motor drive switch through because this application can freely switch under first state and second state at the inside gear mounting panel that sets up of casing, makes the electrically operated gate lead to when electric drive equipment is out of order in emergency, realizes the electrically operated gate of manual switch closure.
Description
Technical Field
The application relates to the field of security engineering, especially to a manual opening device for electric door.
Background
In prison, the access control system is an indispensable component of the intelligent security of the existing prison, and the intelligent security access control system can not only establish a prison standardized management image, but also ensure the safety of the existing prison access control.
In the access control system of prison, adopt the most extensive be electronic entrance guard's device, electronic entrance guard's device mainly through motor drive, makes the electrically operated gate carry out the switch closure according to the track of normal setting under motor drive, and its aim at replaces traditional machinery class control through electric control, and its security performance, convenience and aesthetic property all effectively improve.
However, this kind of electric door access control device is in the in-service use in-process, under the emergence emergency, for example have a power failure, conflagration etc. to take place the malfunctioning phenomenon of electric drive equipment, lead to electric door access control can not realize good switch closure, so, need design a manual opening device for electric door, realize under electric door access control malfunctioning state, the manual demand of opening the door so that personnel can satisfy emergent escape through this electric door.
SUMMERY OF THE UTILITY MODEL
In order to make the electrically operated gate lead to when electric drive equipment is malfunctioning at emergency, can carry out good switch closure to the electrically operated gate through the mode of manual opening and getting, the application provides a manually operated opening device for electrically operated gate: the method comprises the following steps: the shell is arranged at one end of the electric door and forms an accommodating cavity with an opening at one end; the sliding rack is arranged between the shell and the electric door, and one end of the sliding rack close to the shell is provided with a latch; the driving motor is arranged in the accommodating cavity, a driving gear is arranged at one end, far away from the accommodating cavity, of the driving motor, and the driving motor is detachably connected with the driving gear through a driving motor shaft; the gear mounting panel, the gear mounting panel is located the driving gear closes on the one side that holds the chamber, the one end of gear mounting panel be equipped with driving gear meshed's first driven gear, the gear mounting panel with but drive motor shaft pivotal connection is so that first driven gear is mobile between the first state and second state when first driven gear is located the first state, first driven gear is close to the latch and with the latch meshing when first driven gear is located the second state, first driven gear keeps away from latch and spaced apart setting.
Through adopting above-mentioned technical scheme, because this application can freely switch over under first state and second state at the inside gear mounting panel that sets up of casing, it only passes through the closed mode of motor drive switch to have changed traditional electrically operated gate, make the electrically operated gate can pass through the meshing and the separation of the first driven gear that sets up on the gear mounting panel and slip rack, because slip rack and electrically operated gate are fixed, so the motion of drive slip rack can realize whether the electrically operated gate realizes closing and opening of electrically operated gate through the drive of motor, thereby make the electrically operated gate have the closed scheme of multimode switch, when the electrically operated gate leads to electric drive equipment to be out of order in emergency, enable to realize the separation between electrically operated gate and the motor, thereby can realize other closed schemes to the electrically operated gate switch.
Preferably, the manual opening device for the electric door further comprises: the first bevel gear is arranged at the other end of the gear mounting plate and is positioned on the same side as the driving gear, one end of the rotating rod penetrates through the wall body, at least one part of the rotating rod is fixed on the surface of the wall body, a second bevel gear is fixedly connected to the other end of the rotating rod and is in transmission connection with the first bevel gear, and the rotating rod can move along the axial direction of the rotating rod so as to drive the first bevel gear to move along the axial direction of the rotating rod; and the second driven gear is arranged between the first bevel gear and the gear mounting plate and is coaxially and fixedly arranged with the first bevel gear.
Through adopting above-mentioned technical scheme, because this application sets up bevel gear mechanism through the other end at gear mounting panel, through the meshing combination of bevel gear structure and the axial motion through the rotary rod, can realize the switching of gear mounting panel between first state and second state to gear mounting panel one side through the power of the axis direction of exerting to when emergency leads to electric drive equipment to be out of order, enable to realize the separation between electrically operated gate and the motor.
Preferably, when the first driven gear is in the first state, the second driven gear is away from the latch, and when the first driven gear is in the second state, the second driven gear is close to the latch and is engaged with the latch.
Through adopting above-mentioned technical scheme, because this application cooperates through the latch with second driven gear and slip rack, makes it can be under the motor failure state, the scheme that realizes manual control with the drive slip rack through the motion of rotary rod to when the electrically operated gate leads to electrically operated drive equipment to be out of order at emergency, the scheme of accessible manual regulation carries out the switch closure to the electrically operated gate.
Preferably, the rotating lever includes: a sliding rod formed as a rod-shaped member and provided with a second bevel gear at one end; the rotating shaft is sleeved at the other end of the sliding rod, and at least one part of the outer surface of the rotating shaft is provided with threads; the rotating wheel is sleeved on the rotating shaft and is in threaded connection with the rotating shaft to drive the sliding rod to be movable along the axial direction of the sliding rod.
Through adopting above-mentioned technical scheme, because this application has adopted the scheme of pivot and swiveling wheel to handle, make the slide bar can realize axial removal through the screw thread under manual operation, like this in the in-service use process, when the gear mounting board is located under the second state, promote the activity of the first bevel gear and the second bevel gear of meshing through the slide bar, thereby make the second driven gear form good meshing with the latch of slip rack, when rotatory pivot once more, can control the activity of slip rack through manual operation, thereby realize the scheme of manual switch closed electrically operated gate.
Preferably, the rotating lever further includes: the hoop fixing part is arranged on the sliding rod, one end of the hoop fixing part is fixed to the wall body, and a first through hole is formed in the hoop fixing part, so that the second bevel gear fixed to one end of the sliding rod is meshed with the first bevel gear.
Through adopting above-mentioned technical scheme, because this application has adopted the clamp fixed part to carry out good fixed to the sliding rod spare, because what adopt in this application stretches into the inside rotary rod of wall body, so higher length can lead to the direction of rotary rod to appear the deviation, can not only effectively stabilize the rotary rod through the clamp fixed part, can also effectively be to the good guide effect of formation of rotary rod.
Preferably, the gear mounting plate includes: the sliding through groove is formed into an arc-shaped through groove which penetrates through the sliding through groove in the thickness direction of the sliding through groove and is positioned at one end of the gear mounting plate; the limiting rod, limiting rod one end is located hold in the chamber and form into rod type spare, the other end of limiting rod passes slide through groove so that the gear mounting panel is mobile under first state and second state.
Through adopting above-mentioned technical scheme, because this application sets up the groove and gag lever post that lead to that slide on gear mounting panel, make gear mounting panel when switching under first state and second state quick accurate location, gag lever post and the groove formation good cooperation that leads to that slides simultaneously forms good constraint effect to gear mounting panel's movement track.
Preferably, the sliding rods are fixedly connected by a plurality of cross-axle universal couplings.
Through adopting above-mentioned technical scheme, because this application is connected many slide bars through cross universal joint, at the in-service use in-process, make the slide bar can realize reliable transmission torque and motion, because cross universal joint has good angle compensation ability, make the delivery of strength have more the reliability, cross universal joint compact structure simultaneously, transmission efficiency is high, and the noise is low, long service life, maintenance convenience.
Preferably, the sliding rack further comprises: the sliding wheel is arranged between the sliding rack and the electric door and is fixedly connected with the sliding rack; the sliding rail is arranged on the electric door and connected with the sliding wheel in an abutting mode.
Through adopting above-mentioned technical scheme, because this application adopts movable pulley and slip track cooperation, make the electrically operated gate when manual switch closure, cooperate through movable pulley and movable pulley, carried out the closed degree of difficulty of manual switch when having reduced the electrically operated gate inefficacy.
In summary, the present application includes at least one of the following beneficial technical effects:
1. this application can freely switch under first state and second state through the gear mounting panel that sets up inside the casing, has changed traditional electrically operated gate and has only passed through the closed mode of motor drive switch, makes the electrically operated gate can pass through the meshing and the separation of the first driven gear that sets up on the gear mounting panel and slip rack, when the electrically operated gate leads to electric drive equipment to be out of order at emergency, enables to realize the separation between electrically operated gate and the motor to can realize other closed schemes of electrically operated gate switch.
2. This application is through coordinating the latch with the second driven gear and slip rack, makes it can realize manual control's scheme with the drive slip rack through the motion of rotary rod under the motor failure state to when the electrically operated gate leads to electrically driven equipment to be out of order at emergency, the scheme of accessible manual regulation carries out the switch closure to the electrically operated gate.
3. This application leads to groove and gag lever post through setting up the slip on gear mounting panel, makes gear mounting panel rapid accurate location when switching under first state and second state, and gag lever post and slip lead to the groove to form good cooperation simultaneously, form good constraint effect to gear mounting panel's movement track.
Drawings
Fig. 1 is a schematic structural view of a manual opening device for an electric door according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a manual opening device for an electric door according to an embodiment of the present invention.
Fig. 3 is a sectional view showing an assembly structure of a rotary wheel and a rotary shaft in the manual opening device for the door according to the embodiment of the present application.
Description of reference numerals: 1. a housing; 2. a sliding rack; 21. a sliding wheel; 22. a sliding track; 3. a drive motor; 31. a drive motor shaft; 4. a driving gear; 5. a first driven gear; 6. a gear mounting plate; 61. a sliding through groove; 62. a limiting rod; 7. a first bevel gear; 8. a second bevel gear; 9. a second driven gear; 10. rotating the rod; 101. a slide bar; 102. a cross-shaft universal coupling; 103. a rotating shaft; 104. a rotating wheel; 105. a clip fixing portion.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses manual opening device for electric door. Referring to fig. 1 and 2, a housing 1 with an outward opening is arranged between a wall body and an electric door, one end of the housing 1 is fixed with a door frame of the electric door, a driving motor 3 is fixedly connected inside the housing 1, the driving motor 3 is installed at the innermost layer of a cavity of the housing 1, a gear mounting plate 6 is arranged outside the driving motor 3, one end of a shaft of the driving motor 3 on the driving motor 3 penetrates through the gear mounting plate 6 and is fixedly connected with a driving gear 4, the driving gear 4 is arranged at the center of the gear mounting plate 6 and can effectively fix the gear and form a supporting function, the gear mounting plate 6 can move axially along the shaft of the driving motor 3, and a first driven gear 5 which is meshed with the driving gear 4 is fixedly connected to the left side of the gear mounting plate 6;
referring to fig. 1 and 2, a sliding through groove 61 penetrating through the gear mounting plate 6 is arranged at one end of the gear mounting plate 6, a limiting rod 62 is inserted into the sliding through groove 61, one end of the limiting rod 62 is fixedly connected with the inner wall of the shell 1, the size of the other end of the limiting rod 62 is larger than that of the sliding through groove 61, so that the stability of the sliding through groove 61 is improved, a second driven gear 9 is fixedly arranged on the gear mounting plate 6 on the right side of the driving gear 4, a first bevel gear 7 is arranged on the surface of the second driven gear 9, and a second bevel gear 8 is arranged on the first bevel gear 7 in a meshing manner through a straight bevel gear transmission manner;
referring to fig. 2 and 3, the second bevel gear 8 is disposed at one end of a rotating rod 10, a rotating wheel 104 is further disposed at the other end of the rotating rod 10, the rotating rod 10 extends from the inside of the housing 1 to the inside of the wall, and then penetrates through the wall and extends out, one end of the rotating wheel 104 is connected with one end of a rotating shaft 103 in an abutting manner, and the rotating shaft 103 can move in a telescopic manner along a threaded structure disposed inside the rotating wheel 104 when the rotating wheel 104 rotates, a plurality of sliding rods 101 are disposed at the other end of the rotating shaft 103, the sliding rods 101 and the sliding rods 101 are fixed by a universal joint 102, and then penetrate through a clamp fixing portion 105, and the sliding rods 101 are guided by the clamp fixing portion 105, so that a good fixing effect can be achieved;
referring to fig. 2 and 3, a sliding rack 2 is provided on one side of the electric door close to the housing 1, a sliding rail 22 is provided on the electric door, the sliding rack 2 is fixedly connected with a sliding wheel 21 and is clamped on the sliding rail 22, when in actual use, the rotating wheel 104 rotates to move the rotating shaft 103 downwards and simultaneously push the sliding rod 101 to translate downwards, the second bevel gear 8 connected to the bottom of the sliding rod 101 drives the first bevel gear 7 to move downwards due to being in a meshed state with the first bevel gear 7, due to the downward movement of the first bevel gear 7, under the fixed support of the driving motor 3 shaft, the left side of the gear mounting plate 6 moves upwards along the track of the sliding through groove 61 to separate the second driven gear 9 from the sliding rack 2, and meanwhile, the second driven gear 9 provided at the bottom of the first bevel gear 7 forms a meshed state with the sliding rack 2, at this time, by continuing to rotate the rotating wheel 104, the second driven gear 9 drives the sliding rack 2 to move, so that the sliding wheel 21 on the sliding rack 2 displaces along the sliding track 22, and the manual driving of the electric door is realized;
referring to fig. 2 and 3, when the electric door does not need to be adjusted manually, the rotating wheel 104 is rotated in the opposite direction, the rotating wheel 104 moves upwards along the threads and drives the sliding rod 101 to move upwards, the second bevel gear 8 at the bottom of the sliding rod 101 and the first bevel gear 7 are in a meshed state, so that the first bevel gear 7 is driven to move upwards, then, under the fixed support of the shaft of the driving motor 3, the left side of the gear mounting plate 6 moves downwards along the track of the sliding through groove 61, so that the second driven gear 9 is meshed with the sliding rack 2, at this time, the driving motor 3 is started, and under the rotation of the driving gear 4, the first driven gear 5 drives the sliding rack 2 to move, so that the sliding wheel 21 on the sliding rack 2 moves along the sliding track 22, and the electric.
The implementation principle of the manual opening device for the electric door in the embodiment of the application is as follows:
firstly, when the electric door driving motor 3 fails due to an emergency state, the adjusting rotating wheel 104 rotates, the rotating shaft 103 is driven to slide downwards by rotating downwards to enable the sliding rod 101 to move downwards, and the second bevel gear 8 is driven to be meshed and connected with the first bevel gear 7 by downwards moving the sliding rod 101, and the second bevel gear 8 continuously moves downwards to enable the second driven gear 9 to be meshed with the sliding rack 2;
secondly, continuing to rotate the rotating wheel 104, when the rotating wheel 104 moves downwards to the maximum value, the rotating wheel 104 rotates no longer and simultaneously the rotating wheel 104 drives the sliding rod 101 to rotate, so that the second bevel gear 8 and the first bevel gear 7 rotate and drive the second driven gear 9 to drive the sliding rack 2 to move, and thus the manual driving of the electric door is realized;
thirdly, when the electric door does not need to be opened manually, the rotating wheel 104 is rotated reversely to drive the sliding rod 101 to rotate, so that the second bevel gear 8 and the first bevel gear 7 move upwards, and the second driven gear 9 is driven to be separated from the sliding rack 2;
and fourthly, continuing to reversely rotate the rotating wheel 104, moving the sliding rod 101 upwards, and under the support of the shaft of the driving motor 3, engaging the first driven gear 5 with the sliding rack 2, opening the driving gear 4 driven by the motor, and driving the first driven gear 5 to operate through the operation of the driving gear 4, thereby realizing the closing of the switch of the electric driving electric door.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A manual opening device for an electric door, comprising:
the electric door comprises a shell (1), wherein the shell (1) is arranged at one end of the electric door and is formed into an accommodating cavity with one open end;
the sliding rack (2) is arranged between the shell (1) and the electric door, and one end, close to the shell (1), of the sliding rack (2) is provided with a latch;
the driving motor (3) is arranged in the accommodating cavity, one end, far away from the accommodating cavity, of the driving motor (3) is provided with a driving gear (4), and the driving motor (3) is detachably connected with the driving gear (4) through a driving motor (3) shaft;
gear mounting panel (6), gear mounting panel (6) are located driving gear (4) are close to the one side that holds the chamber, the one end of gear mounting panel (6) be equipped with first driven gear (5) of driving gear (4) meshing, gear mounting panel (6) with but driving motor (3) axle pivot connect so that first driven gear (5) are mobile between first state and second state when first driven gear (5) are located the first state, first driven gear (5) are close to the latch and with the latch meshing when first driven gear (5) are located the second state, keep away from first driven gear (5) latch and spaced apart the setting.
2. The manual opening device for electrically operated door as claimed in claim 1, further comprising:
the first bevel gear (7), the first bevel gear (7) is arranged at the other end of the gear mounting plate (6) and is positioned at the same side with the driving gear (4),
one end of the rotating rod (10) penetrates through the wall body, at least one part of the rotating rod (10) is fixed on the surface of the wall body, a second bevel gear (8) is fixedly connected to the other end of the rotating rod (10) and is in transmission connection with the first bevel gear (7), and the rotating rod (10) can move along the axial direction of the rotating rod (10) so as to drive the first bevel gear (7) to move along the axial direction of the rotating rod (10);
and the second driven gear (9) is arranged between the first bevel gear (7) and the gear mounting plate (6) and is coaxially and fixedly arranged with the first bevel gear (7).
3. A manual opening device for an electrically operated door as claimed in claim 2, wherein said second driven gear (9) is located away from said latch when said first driven gear (5) is in the first state, and said second driven gear (9) is located close to and in engagement with said latch when said first driven gear (5) is in the second state.
4. A manual opening device for electrically operated doors according to claim 3, characterized in that said rotary lever (10) comprises:
a sliding rod (101), wherein the sliding rod (101) is formed into a rod-shaped piece, and one end of the sliding rod is provided with a second bevel gear (8);
the rotating shaft (103) is sleeved at the other end of the sliding rod (101), and at least one part of the outer surface of the rotating shaft (103) is provided with threads;
the rotating wheel (104) is sleeved on the rotating shaft (103) and is in threaded connection with the rotating shaft (103) to drive the sliding rod (101) to be movable along the axial direction of the sliding rod.
5. Manual opening device for electrically operated doors according to claim 4, characterized in that said rotary lever (10) further comprises:
the clamp fixing part (105), the clamp fixing part (105) is located on the sliding rod (101) and one end of the clamp fixing part is fixed with the wall, and the clamp fixing part (105) is provided with a first through hole, so that the second bevel gear (8) fixed at one end of the sliding rod (101) is meshed with the first bevel gear (7).
6. A manual opening device for electrically operated doors according to claim 3, characterized in that said gear mounting plate (6) comprises:
a sliding through groove (61), the sliding through groove (61) being formed as an arc-shaped through groove penetrating in a thickness direction thereof and being located at one end of the gear mounting plate (6);
one end of the limiting rod (62) is arranged in the accommodating cavity and is formed into a rod-shaped piece, and the other end of the limiting rod (62) penetrates through the sliding through groove (61) so that the gear mounting plate (6) can move in the first state and the second state.
7. A manual opening device for electrically operated doors according to claim 4, wherein said sliding rod (101) is fixedly connected by a plurality of cross-shaft universal couplings (102).
8. Manual opening device for electrically operated doors, according to claim 4, characterized in that said sliding rack (2) further comprises:
the sliding wheel (21) is arranged between the sliding rack (2) and the electric door and fixedly connected with the sliding rack (2);
the sliding rail (22) is arranged on the electric door and connected with the sliding wheel (21) in an abutting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720704.XU CN213953333U (en) | 2020-11-21 | 2020-11-21 | Manual opening device for electric door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022720704.XU CN213953333U (en) | 2020-11-21 | 2020-11-21 | Manual opening device for electric door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213953333U true CN213953333U (en) | 2021-08-13 |
Family
ID=77210371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022720704.XU Active CN213953333U (en) | 2020-11-21 | 2020-11-21 | Manual opening device for electric door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213953333U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113973800A (en) * | 2021-10-22 | 2022-01-28 | 国网山东省电力公司济南市历城区供电公司 | A rat-proof structure of a transformer box |
-
2020
- 2020-11-21 CN CN202022720704.XU patent/CN213953333U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113973800A (en) * | 2021-10-22 | 2022-01-28 | 国网山东省电力公司济南市历城区供电公司 | A rat-proof structure of a transformer box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10570651B2 (en) | Plug door lock device and plug door system | |
| WO2020048254A1 (en) | Electronic padlock | |
| CN101446154B (en) | Bisected double-door linked locking device | |
| CN213953333U (en) | Manual opening device for electric door | |
| CN107339045B (en) | A kind of passive termination locking device for track vehicle door system | |
| CN205558525U (en) | Take emergent opening device's of flexible axle electromagnetic shielding door | |
| CN209908112U (en) | Clutch type door lock | |
| CA2483356C (en) | Direct transmission garage door opener | |
| CN219478281U (en) | Mining explosion-proof box with safety interlocking mechanism | |
| CN105672776A (en) | Electromagnetic shielding door with flexible shaft emergency opening device | |
| CN207761494U (en) | Screw drives control system | |
| CN110469214A (en) | Incude self-locking automobile door lock | |
| CN214996972U (en) | Door opening machine | |
| CN110616966B (en) | Electric lock body | |
| CN107724854A (en) | It is double to open sliding door system | |
| CN210370235U (en) | Explosion-proof intelligent lock | |
| CN2440934Y (en) | Self locked and electric controlled security door | |
| CN207686502U (en) | It is double to open sliding door system | |
| CN220022092U (en) | Switch cabinet with interlocking device for rear upper door and cable chamber door | |
| CN112201527A (en) | An electromagnetic adsorption type electric load switch remote control operation device and operation method | |
| CN216949909U (en) | Lock with violence-proof opening function | |
| CN220065483U (en) | Forced interlocking mechanism of switch cabinet | |
| CN219387562U (en) | Left door section bar lock | |
| CN116220477B (en) | Pick-proof mechanical electric control lock | |
| CN221103798U (en) | Flameproof and intrinsically safe control box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tian Xianfeng Inventor after: Wu Jun Inventor before: Wu Jun |