CN211974706U - Timing automatic cabinet door closing device - Google Patents
Timing automatic cabinet door closing device Download PDFInfo
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- CN211974706U CN211974706U CN202020195184.2U CN202020195184U CN211974706U CN 211974706 U CN211974706 U CN 211974706U CN 202020195184 U CN202020195184 U CN 202020195184U CN 211974706 U CN211974706 U CN 211974706U
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- driving motor
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Abstract
The utility model discloses a timing automatic cabinet door closing device, which comprises a cabinet body and a cabinet door, wherein the cabinet door is rotationally connected with the cabinet body, a rotating external member for closing the cabinet body is arranged in the cabinet body, the rotating external member is fixedly connected in the cabinet body through a fixing frame, the rotating external member comprises a driving motor, a scroll, a driving belt and a clutch device, the fixed end of the scroll is rotationally connected with the fixing frame, one end of the driving belt is fixedly wound on the shaft body of the scroll, and the other end of the driving belt is fixedly connected with the inner side of; when the driving motor works, the output shaft of the driving motor is in transmission connection with the free end of the reel through the clutch device; when the driving motor does not work, the clutch device is in transmission-free connection with the reel; and the cabinet body is also internally provided with a limit switch and a timing device which are connected with the control circuit of the rotating external member.
Description
Technical Field
The utility model relates to a regularly close cabinet door device automatically.
Background
Outdoor terminal box in current transformer substation, the application such as automatically controlled cabinet is very extensive, overhauls in daily life, and in the operation maintenance process, often need open, close the cabinet door, often can cause the cabinet door can not in time close because of reasons such as personnel's carelessness, or close circumstances such as unreliable, cause thunderstorm weather rainwater to squeeze into electrical equipment in the cabinet, cause accidents such as electric loop short circuit or conflagration.
The existing automatic door closing technology mainly comprises a hydraulic rod, a rack, a rope and the like are pulled to close a cabinet door, but the existing automatic door closing technology is insufficient, and in practical application, more or less problems exist, for example, resistance is increased when the hydraulic rod is designed to cause manual door opening and closing, the rack design influences the door opening angle, the range of a cabinet door opening and closing position is limited, the rope design can cause rope sag in practical application, the manual door opening and closing and the electric door closing can not be separated from each other in the mechanism, reverse current is generated by reversing a driving motor when the door is opened and closed manually, and influence can be caused on an electric mechanism and an electric loop. Therefore, it is necessary to design a device capable of timing and automatically closing a door, so as to overcome the defects of the existing automatic door closing technology, meet the requirements of normal door opening and closing operations such as operation maintenance and the like, and simultaneously, reliably close the door at regular time according to set time after the operation is finished.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a regularly close cabinet door device automatically, overcomes the weak point among the prior art, can close the door automatically, when opening the cabinet door, driving motor does not have the return electricity, and the resistance of closing the door is little, and the drive belt does not have advantages such as flagging.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a timing automatic cabinet door closing device comprises a cabinet body and a cabinet door, wherein the cabinet door is rotationally connected to the cabinet body, a rotating external member for closing the cabinet body is arranged in the cabinet body, the rotating external member is fixedly connected in the cabinet body through a fixing frame, the rotating external member comprises a driving motor, a scroll, a driving belt and a clutch device, the fixed end of the scroll is rotationally connected with the fixing frame, one end of the driving belt is fixedly wound on the scroll shaft body, and the other end of the driving belt is fixedly connected to the inner side of the cabinet door;
when the driving motor works, the output shaft of the driving motor is in transmission connection with the free end of the reel through the clutch device;
when the driving motor does not work, the clutch device is in transmission-free connection with the reel;
the cabinet body is also internally provided with a limit switch and a timing device which are connected with the control circuit of the rotating external member;
when the cabinet door is closed in place, the limit switch disconnects the power supply of the timing device;
when the cabinet door is opened, the limit switch is connected with the power supply of the timing device, the timing device starts timing, the clutch device is firstly controlled by the control loop to be in transmission connection with the output shaft of the driving motor and the scroll after the set time, and then the driving motor is controlled to rotate, so that the scroll rotates to tighten the transmission belt to close the cabinet door.
Further, the timing device is a time relay.
Furthermore, the clutch device comprises a connecting piece A which is coaxially arranged in the vertical direction and fixedly connected with the scroll, a connecting sleeve, a connecting piece B which is fixedly connected with an output shaft of the driving motor and a driving piece, wherein the driving piece is fixedly connected to the fixed frame;
when the driving motor does not work, the connecting sleeve and the connecting piece A are in a separation state and the connecting sleeve and the connecting piece B are in a combination state;
before the driving motor works, the driving part drives the connecting sleeve to be in a combined state with the connecting piece A and the connecting piece B;
after the connecting sleeve works, the output shaft of the driving motor drives the reel to rotate through the connecting sleeve to tighten the driving belt to close the cabinet door.
Furthermore, the driving part is an electromagnet coil and is fixedly connected to the fixing frame, and the connecting sleeve is made of an electromagnet shaft;
a connecting piece A is fixedly inserted at the free end of the scroll, the connecting piece A comprises a connecting body A, the center of the connecting body A is provided with an inserting hole A for the insertion and fixation of the scroll, the diameter of one end close to the connecting sleeve is smaller, an upper pin is fixedly connected to the outer wall of the connecting body A, and one end of the upper pin close to the connecting sleeve is provided with a chamfer;
a connecting piece B is fixedly inserted at the free end of the rotating shaft of the driving motor, the connecting piece B comprises a connecting body B, an inserting hole B for inserting and fixing the rotating shaft is formed in the center of the connecting body B, the diameter of one end, close to the connecting sleeve, of the connecting body B is smaller, a lower pin is fixedly connected to the outer wall of the connecting body B, and an inclined cutting surface is formed at one end, close to the connecting sleeve, of the;
the movable part of the connecting sleeve in the electromagnetic coil is an entity, two ends of the connecting sleeve are respectively sleeved on the connecting piece A and the connecting piece B, an upper baffle and a lower baffle which are respectively matched with the upper pin and the lower pin are respectively and fixedly connected to the inner walls close to the connecting piece A and the connecting piece B, the upper baffle and the lower baffle are both provided with inclined planes, the vertical projection height of the inclined plane of the lower baffle is larger than that of the inclined plane of the upper baffle, when the driving piece does not work, the upper baffle is not in contact with the upper pin, and the lower baffle is attached to the inclined plane of the lower pin; when the driving piece works, the upper stop and the edge of the upper pin are mutually supported, and the lower stop and the inclined cutting surface of the lower pin are mutually supported.
Further, the inclined cutting surfaces of the upper gear and the lower gear are arranged in opposite directions.
Further, the chamfer angle alpha angle of the chamfer plane is 30-60 degrees.
Further, the belt is made of nylon.
Furthermore, the normally closed contact SK of the limit switch is connected with a coil SJ of the time relay in series and then is connected with a power supply; a first normally open contact SJ1 of the time relay is connected with the electromagnet coil DN in series and then is connected with a power supply; and a second normally open contact SJ2 of the time relay is connected with the motor coil M in series and then is connected with a power supply.
Furthermore, a rotating device is further arranged and fixedly connected to the reel shaft body, the rotating device stores force when the cabinet door is opened, and the reel shaft is controlled to rotate after the cabinet door is opened or when the cabinet door is manually closed, so that the transmission belt is in a tightening state.
Furthermore, the rotating device is a coil spring, the end part of the outer ring of the coil spring is fixed on the inner wall of the mounting box, the end part of the inner ring of the coil spring is fixed on the scroll, and the mounting box is fixedly connected to the fixing frame.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the utility model discloses simple structure when can realizing closing the cabinet door automatically, the driving motor reversal produced current produces the influence to the components and parts in the electrical apparatus cabinet when can avoiding the pulling drive belt through setting up the adapter sleeve, sets up the wind spring simultaneously and can avoid the drive belt to appear hanging the area when opening cabinet door and artifical cabinet door of closing, or twine the problem of electrical apparatus cabinet in-connection line.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure in the rotating sleeve.
Fig. 3 is a schematic view of the internal cross-section of the rotating sleeve.
Fig. 4 is a schematic structural diagram of a connector a.
Fig. 5 is a schematic structural view of a connector B.
Fig. 6 is a schematic sectional structure view of the connecting sleeve.
FIG. 7 is a schematic diagram of an electrical control circuit.
Detailed Description
As shown in fig. 1 to 6, a timing automatic cabinet door closing device includes a cabinet body 10 and a cabinet door 20, the cabinet door 20 is rotatably connected to the cabinet body 10, a rotation external member 30 for closing the cabinet body 10 is disposed in the cabinet body 10, the rotation external member 30 is fixedly connected to the inside of the cabinet body 10 through a fixing frame 302, the rotation external member 30 includes a driving motor 301, a reel 303, a transmission belt 40 and a clutch device, a fixed end of the reel 303 is rotatably connected to the fixing frame 302, one end of the transmission belt 40 is fixedly wound around the reel 303, and the other end of the transmission belt is fastened (or fastened in other fixing manners) to the inner side of the cabinet door 20;
when the driving motor 301 works, the output shaft of the driving motor 301 is in transmission connection with the free end of the winding shaft 303 through the clutch device;
when the driving motor 301 does not work, the clutch device is in non-transmission connection with the reel 303;
a limit switch 50 and a timing device 60 connected with a control circuit of the rotating external member 30 are also arranged in the cabinet body 10;
when the cabinet door 20 is closed in place, the limit switch 50 cuts off the power supply of the timing device 60;
when the cabinet door 20 is opened, the limit switch 50 is connected with the power supply of the timing device 60, the timing device 60 starts timing, after a set time, the clutch device is firstly controlled by the control loop to be in transmission connection with the output shaft of the driving motor 301 and the scroll 303, and then the driving motor 301 is controlled to rotate, so that the scroll 303 rotates to tighten the transmission belt 40 to close the cabinet door 20.
Particularly, through setting up limit switch 50, when the cabinet door is opened, make timing device 60 electrified, begin the timing, and control clutch transmission connection driving motor 301 output shaft and spool 303 after the settlement time, restart driving motor 301 rotates, thereby make spool 303 rotate and tighten up drive belt 40 and close cabinet door 20, cut off the control circuit power after limit switch 50 targets in place, realize automatic cabinet door 20 that closes, because through setting up clutch, driving motor 301 is out of work when opening cabinet door 20, clutch is connected with spool 303 does not have the transmission, make driving motor 301's axis of rotation not the antiport, driving motor 301 can't produce the reverse work current, thereby avoid causing the influence to the electrical components in the electrical apparatus cabinet.
Further, the timing device 60 is a time relay. DH48s-s may be used.
Further, the clutch device comprises a connecting piece A306, a connecting sleeve 304, a connecting piece B307 and a driving piece 305, wherein the connecting piece A306 is fixedly connected with the reel 303, the connecting sleeve 304 is fixedly connected with an output shaft of the driving motor 301, and the driving piece 305 is fixedly connected to the fixed frame 302;
when the driving motor 301 does not work, the connecting sleeve 304 and the connecting piece a306 are in a separated state, and the connecting sleeve 304 and the connecting piece B307 are in a combined state;
just before the driving motor 301 works, the driving member 305 drives the connecting sleeve 304 to be in a combined state with the connecting member a306 and the connecting member B307;
after the connecting sleeve 304 is finished, the output shaft of the driving motor 301 drives the winding shaft 303 to rotate to tighten the transmission belt 40 through the connecting sleeve 304 to close the cabinet door.
Specifically, before the driving motor 301 works, the driving member 305 drives the connecting sleeve 304 to be in a combined state with the connecting member a306 and the connecting member B307, so that the connecting sleeve 304 and the connecting member a306 are prevented from being collided and damaged when the driving motor rotates.
Further, the driving member 305 is an electromagnet coil and is fixedly connected to the fixing frame 302, and the connecting sleeve 304 is made of an electromagnet shaft;
the free end of the scroll 303 is fixedly connected with a connecting piece A306 in an inserting manner, the connecting piece A306 comprises a connecting body A3061, the center of the connecting body A3061 is provided with an inserting hole A3062 for inserting and fixing the scroll 303, the diameter of one end close to the connecting sleeve is smaller, an upper pin 3063 is fixedly connected to the outer wall of the connecting body A3061, and one end, close to the connecting sleeve 304, of the upper pin 3063 is provided with a chamfer;
a connecting piece B307 is fixedly inserted at the free end of the rotating shaft of the driving motor 301, the connecting piece B307 comprises a connecting body B3071, the center of the connecting body B3071 is provided with a jack B3072 for inserting and fixing the rotating shaft, the diameter of one end close to the connecting sleeve is smaller, a lower pin 3073 is fixedly connected to the outer wall of the connecting body B3071, and one end of the lower pin 3073 close to the connecting sleeve 304 is provided with a chamfer surface;
the movable part of the connecting sleeve 304 in the electromagnetic coil is a solid, two ends of the connecting sleeve are respectively sleeved on the connecting piece A306 and the connecting piece B307, an upper baffle 3041 and a lower baffle 3042 which are respectively matched with the upper pin 3063 and the lower pin 3073 are respectively and fixedly connected on the inner walls close to the connecting piece A306 and the connecting piece B307, the upper baffle 3041 and the lower baffle 3042 are both provided with inclined planes, the vertical projection height of the inclined plane of the lower baffle 3042 is greater than that of the inclined plane of the upper baffle 3041, when the driving piece 305 does not work, the upper baffle 3041 is not in contact with the upper pin 3063, and the lower baffle 3042 is attached to the inclined plane of the lower pin 3073; when the driving member 305 is operated, the upper stop 3041 abuts the edge of the upper pin 3063, and the lower stop 3042 abuts the chamfered surface of the lower pin 3073.
Specifically, the number of the upper block 3041, the upper pin 3063, the lower block 3042 and the lower pin 3073 is consistent, the number is at least one, the upper block 3061, the connecting body B3071 and the connecting sleeve 304 are respectively and uniformly distributed along the circumference, the connecting member a306 and the connecting member B307 are respectively arranged on the scroll 303 and the rotating shaft, the upper pin 3063 and the lower pin 3073 are respectively arranged on the connecting member a306 and the connecting member B307, the upper block 3041 and the lower block 3042 which are matched with the upper pin 3063 and the lower pin 3073 are respectively arranged on the connecting sleeve 304 of the electromagnet, under the condition that the electromagnet coil is not electrified, the top end of the upper block 3041 of the connecting sleeve 304 is separated from the bottom end of the upper pin 3063 of the scroll, the distance between the top end of the upper block 3063 and the bottom end of the upper pin 3063 of the scroll is 0.1-0.5 cm, preferably 0.2 cm, the transmission between the scroll 303 and the connecting sleeve 304 is avoided, the connecting sleeve 304 penetrates through the electromagnetic coil, the upper stop 3041 of the connecting sleeve 304 is clamped into the upper pin 3063 of the reel 303, and since the vertical projection height of the oblique plane of the lower stop 3042 is greater than that of the oblique plane of the upper stop 3041, it is ensured that after the connecting sleeve 304 is pushed up, the upper stop 3041 is clamped with the upper pin 3063, and the lower stop 3042 is vertically overlapped with the oblique plane of the lower pin 3073, so that the three-axis connection of the reel 303, the connecting sleeve 304 and the rotating shaft of the driving motor 301 is ensured, and the transmission is realized.
Further, the upper stop 3041 and the lower stop 3042 are arranged in opposite directions of their diagonal planes. The upper and lower stops 3041 and 3042 have their diagonal surfaces in opposite directions, so that the lower stop 3042 contacts with the lower pin 3073 when the driving motor rotates, and has a certain upward thrust for the connecting sleeve 303, while the upper stop 3041 has a better thrust when contacting with the right-angled edge of the upper pin 3063.
Further, the chamfer angle alpha angle of the chamfer plane is 30-60 degrees. The specific manufacturing time is preferably 45 degrees.
Further, the belt 40 is made of nylon. Compared with the common transmission belt, the nylon has better toughness.
Further, the rotating device 70 is further arranged, the rotating device 70 is fixedly connected to the shaft body of the reel 303, the rotating device 70 stores force when the cabinet door 20 is opened, the reel 303 is controlled to rotate after the cabinet door 20 is opened or when the cabinet door 20 is manually closed, so that the transmission belt 40 is in a tightening state, the rotating device 70 is a coil spring, the end part of the outer ring of the coil spring is fixed to the inner wall of the installation box 701, the end part of the inner ring of the coil spring is fixed to the reel 303, and the installation box 701 is fixedly connected to the fixing frame 302.
Particularly, through setting up slewer 70, hold power when the cabinet door is opened, control spool 303 gyration when cabinet door 20 is opened the back or the artificial cabinet door 20 that closes, ensure that drive belt 40 is in the state of tightening up, prevent that drive belt 40 from twining into in the electrical apparatus cabinet, unusual trouble appears when opening the cabinet door next time, potential safety hazard has been avoided, under the condition of having closed the door, the coil spring energy storage is minimum when drive belt 40 draws out the shortest promptly, under the condition of the biggest state of opening the door, the coil spring energy storage is the biggest when the drive belt draws out the longest promptly, ensure at the switch door in-process, the unnecessary drive belt 40 that exposes the outside can playback and be drawn into the tape box, wherein the coil spring power of backrush is not enough.
As shown in fig. 7, the electric control circuit can adopt a limit switch 50 (WLD 3), and in the circuit connection, a normally closed contact SK of the limit switch 50 is connected in series with a time relay coil SJ and then is connected to a power supply; when the cabinet door 20 is closed in place, the normally closed contact SK of the limit switch is disconnected, and the coil SJ of the time relay is not electrified; and the first time relay normally-open contact SJ1 is connected with the electromagnet coil DN in series and then connected with a power supply, and the second time relay normally-open contact SJ2 is connected with the motor coil M in series and then connected with the power supply, wherein the set time of the contact SJ1 is 2-5S earlier than the working time of the contact SJ 2. After the cabinet door 20 is opened, the normally closed contact SK of the limit switch 50 is closed, the time relay coil SJ is powered on at the moment, after a set time (the set time can be adjusted according to actual experience), the time relay contact SJ1 is closed, the electromagnetic coil DN is powered on, the connecting sleeve 304 moves upwards, the connecting sleeve 304, the connecting piece a306 and the connecting piece B307 are all in a combined state, and after 3S, the time relay contact SJ2 is closed, the driving motor 301 rotates, the reel 303 is driven to rotate through the connecting sleeve 304, and the driving belt 40 is tightened so as to close the cabinet door 20 (the specific installation and circuit connection modes of the time relay, the limit switch and the like are the prior art and are not elaborated herein).
Claims (10)
1. The utility model provides a regularly automatic cabinet door closing device, includes the cabinet body (10), cabinet door (20) rotate to be connected in the cabinet body (10), its characterized in that, be equipped with in the cabinet body (10) and be used for the rotation external member (30) that the cabinet body (10) was closed, rotate external member (30) through mount (302) fixed connection in the cabinet body (10), rotate external member (30) including driving motor (301), spool (303), drive belt (40), clutch, the mount (302) is connected in the rotation of spool (303) fixed end, one end of drive belt (40) is fixed to be wound on spool (303) shaft body, the other end fixed connection is inboard in cabinet door (20);
when the driving motor (301) works, the output shaft of the driving motor (301) is in transmission connection with the free end of the reel (303) through the clutch device;
when the driving motor (301) does not work, the clutch device is in transmission-free connection with the reel (303);
a limit switch (50) and a timing device (60) which are connected with a control circuit of the rotating external member (30) are also arranged in the cabinet body (10);
when the cabinet door (20) is closed in place, the limit switch (50) cuts off the power supply of the timing device (60);
when the cabinet door (20) is opened, the limit switch (50) is connected with the power supply of the timing device (60), the timing device (60) starts timing, after a set time, the clutch device is firstly controlled by the control loop to be in transmission connection with the output shaft of the driving motor (301) and the reel (303), and then the driving motor (301) is controlled to rotate, so that the reel (303) rotates to tighten the transmission belt (40) to close the cabinet door (20).
2. A timed door closer device according to claim 1, wherein said timing means (60) is a time relay.
3. The device for automatically closing the cabinet door in a timing manner as claimed in claim 2, wherein the clutch device comprises a connecting member A (306) fixedly connected with the reel (303), a connecting sleeve (304), a connecting member B (307) fixedly connected with an output shaft of the driving motor (301), and a driving member (305), which are coaxially arranged in the vertical direction, wherein the driving member (305) is fixedly connected to the fixed frame (302);
when the driving motor (301) does not work, the connecting sleeve (304) and the connecting piece A (306) are in a separated state, and the connecting sleeve (304) and the connecting piece B (307) are in a combined state;
before the driving motor (301) works, the driving piece (305) drives the connecting sleeve (304) to be in a combined state with the connecting piece A (306) and the connecting piece B (307);
after the connecting sleeve (304) works, the output shaft of the driving motor (301) drives the reel (303) to rotate through the connecting sleeve (304) to tighten the transmission belt (40) to close the cabinet door.
4. A timed and automatic cabinet door closing device according to claim 3, wherein the driving member (305) is an electromagnet coil, and is fixedly connected to the fixing frame (302), and the connecting sleeve (304) is made of an electromagnet shaft;
a connecting piece A (306) is fixedly connected to the free end of the scroll (303) in an inserting mode, the connecting piece A (306) comprises a connecting body A (3061), an inserting hole A (3062) for inserting and fixing the scroll (303) is formed in the center of the connecting body A (3061), the diameter of one end, close to the connecting sleeve, of the connecting body A is small, an upper pin (3063) is fixedly connected to the outer wall of the connecting body A, and a chamfer face is formed in one end, close to the connecting sleeve (304), of the upper pin (306;
a connecting piece B (307) is fixedly connected to the free end of a rotating shaft of the driving motor (301) in an inserting mode, the connecting piece B (307) comprises a connecting body B (3071), an inserting hole B (3072) for inserting and fixing the rotating shaft is formed in the center of the connecting body B (3071), the diameter of one end, close to the connecting sleeve, of the connecting body B is smaller, a lower pin (3073) is fixedly connected to the outer wall of the connecting body B, and an inclined plane is formed in one end, close to the connecting sleeve (304), of the;
the movable part of the connecting sleeve (304) positioned in the electromagnetic coil is an entity, two ends of the connecting sleeve are respectively sleeved on the connecting piece A (306) and the connecting piece B (307), the inner walls close to the connecting piece A (306) and the connecting piece B (307) are respectively and fixedly connected with an upper baffle (3041) and a lower baffle (3042) which are respectively matched with the upper pin (3063) and the lower pin (3073), the upper baffle (3041) and the lower baffle (3042) are respectively provided with inclined planes, the vertical projection height of the inclined plane of the lower baffle (3042) is greater than that of the inclined plane of the upper baffle (3041), when the driving piece (305) does not work, the upper baffle (3041) is not in contact with the upper pin (3063), and the lower baffle (3042) is attached to the inclined plane of the lower pin (30; when the driving piece (305) works, the upper stop (3041) and the edge of the upper pin (3063) are mutually abutted, and the lower stop (3042) and the inclined cutting surface of the lower pin (3073) are mutually abutted.
5. A timing automatic cabinet door closing device according to claim 4, wherein the upper stop (3041) and the lower stop (3042) have their inclined cutting surfaces in opposite directions.
6. A timed door closer according to claim 5, wherein said chamfer angle α of said chamfer is 30-60 °.
7. A timed door closer according to claim 1, characterized in that said belt (40) is made of nylon.
8. The timing automatic cabinet door closing device according to claim 4, wherein the limit switch (50) is connected with a power supply after a normally closed contact SK is connected with a time relay coil SJ in series; a first normally open contact SJ1 of the time relay is connected with the electromagnet coil DN in series and then is connected with a power supply; and a second normally open contact SJ2 of the time relay is connected with the motor coil M in series and then is connected with a power supply.
9. The device for automatically closing the cabinet door at a timing according to claim 1, further comprising a rotating device (70), wherein the rotating device (70) is fixedly connected to the shaft body of the winding shaft (303), the rotating device (70) stores force when the cabinet door (20) is opened, and the winding shaft (303) is controlled to rotate after the cabinet door (20) is opened or when the cabinet door (20) is manually closed, so that the transmission belt (40) is in a tightened state.
10. A timed door closing device according to claim 9, wherein said rotary device (70) is a coil spring, the outer end of the coil spring is fixed on the inner wall of the mounting box (701), the inner end of the coil spring is fixed on the reel (303), and said mounting box (701) is fixedly connected to the fixing frame (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020195184.2U CN211974706U (en) | 2020-02-22 | 2020-02-22 | Timing automatic cabinet door closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020195184.2U CN211974706U (en) | 2020-02-22 | 2020-02-22 | Timing automatic cabinet door closing device |
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| Publication Number | Publication Date |
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| CN211974706U true CN211974706U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020195184.2U Active CN211974706U (en) | 2020-02-22 | 2020-02-22 | Timing automatic cabinet door closing device |
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| CN (1) | CN211974706U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113781909A (en) * | 2021-08-27 | 2021-12-10 | 上海天马微电子有限公司 | Display screen device |
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2020
- 2020-02-22 CN CN202020195184.2U patent/CN211974706U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113781909A (en) * | 2021-08-27 | 2021-12-10 | 上海天马微电子有限公司 | Display screen device |
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