CN114592767B - Automatic door structure of refrigeration and freezing showcase - Google Patents
Automatic door structure of refrigeration and freezing showcase Download PDFInfo
- Publication number
- CN114592767B CN114592767B CN202011416038.9A CN202011416038A CN114592767B CN 114592767 B CN114592767 B CN 114592767B CN 202011416038 A CN202011416038 A CN 202011416038A CN 114592767 B CN114592767 B CN 114592767B
- Authority
- CN
- China
- Prior art keywords
- driving
- cabinet
- cabinet door
- rotating rod
- driving shaft
- 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
- 230000008014 freezing Effects 0.000 title claims abstract description 17
- 238000007710 freezing Methods 0.000 title claims abstract description 17
- 238000005057 refrigeration Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0404—Cases or cabinets of the closed type
- A47F3/0426—Details
- A47F3/0434—Glass or transparent panels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47F—SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
- A47F3/00—Show cases or show cabinets
- A47F3/04—Show cases or show cabinets air-conditioned, refrigerated
- A47F3/0478—Control or safety arrangements
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/627—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by flexible elongated pulling elements, e.g. belts, chains or cables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
- F25D23/028—Details
Abstract
The invention relates to an automatic door structure of a refrigeration and freezing showcase, which is provided with a case body, a plurality of cabinet doors arranged on the front side surface of the case body, and a driving unit arranged above the case body and capable of driving the cabinet doors to be automatically opened and closed; the cabinet door is arranged on the cabinet body through an upper pivot shaft and a lower pivot shaft, the cabinet door is provided with a frame, the driving unit is at least provided with a driving rotating rod and a detection sensor, the driving rotating rod is provided with a plurality of magnetic blocks, the driving rotating rod is magnetically attracted on the frame of the cabinet door through the magnetic blocks, and the cabinet door is driven by the driving unit to open and close in a single-side pivoting mode; therefore, the cabinet door can be automatically opened or closed, and the convenience of taking objects of consumers is improved.
Description
Technical Field
The present invention relates to an automatic door structure for a refrigeration and freezing showcase, and more particularly, to an automatic door structure for a refrigeration and freezing showcase, which can automatically open or close a cabinet door, thereby improving the convenience of taking objects by consumers.
Background
The store can store the refrigerated goods at low temperature and has better display effect, and the store is generally provided with a refrigerated display cabinet.
As shown in fig. 1, the refrigeration and freezing showcase 1 at least comprises a case body 11 and a plurality of transparent openable case doors 12 mounted on the case body 11, wherein the case doors 12 are provided with handles 121; the cabinet 11 has a certain space, so that the cabinet 1 can store low-temperature goods, and the cabinet 11 is provided with a low-temperature supply machine (refrigerator) for providing low temperature (not shown in the drawing); the cabinet door 12 is mounted on the front surface of the cabinet 11, thereby allowing consumers to view the goods in the cabinet 11. When the consumer selects the goods to be purchased, the user can hold the handle 121 by hand to pull the cabinet door to take the goods in the cabinet 11, the cabinet door 12 is closed by the weight of the user, and the way of pulling the cabinet door 12 with a certain weight by the user is obviously inconvenient for children or consumers with smaller power.
Therefore, how to provide an automatic door structure of a refrigeration and freezing showcase, so as to avoid the need of a consumer to pull the cabinet door open to take the goods, thereby improving the convenience of taking the goods for the consumer, and being a problem to be solved urgently by the refrigeration and freezing cabinet industry.
Disclosure of Invention
The main purpose of the invention is to overcome the inconvenience that the cabinet door of the conventional refrigeration and freezing showcase needs to be opened by a consumer.
The invention provides an automatic door structure of a refrigeration and freezing showcase, which is provided with a case body, a plurality of cabinet doors arranged on the front side surface of the case body, and a driving unit arranged above the case body and capable of driving the cabinet doors to automatically open and close; the cabinet door is arranged on the cabinet body through an upper pivot shaft and a lower pivot shaft, the cabinet door is provided with a frame, the driving unit is at least provided with a driving rotating rod and a detection sensor, the driving rotating rod is provided with a plurality of magnetic blocks, the driving rotating rod is magnetically attracted on the frame of the cabinet door through the magnetic blocks, and the cabinet door is driven by the driving unit to open and close in a single-side pivoting mode.
The invention can achieve the following effects by the main technical means: therefore, the cabinet door can be automatically opened or closed, and the convenience of taking objects of consumers is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional refrigerated display cabinet.
Fig. 2 is a schematic view of a refrigerated display cabinet of the present invention.
Fig. 3 is a perspective view of the drive unit of the present invention.
Fig. 4 is a schematic diagram of the operation of the driving unit of the present invention.
Fig. 5 is a top view of the drive unit of the present invention.
Fig. 6 is a cross-sectional view of the drive pawl and the cabinet door of the drive unit of the present invention.
FIG. 7 is a top view of the drive pawl and cabinet door of the drive unit of the present invention.
Fig. 8 is a schematic view of the door of the present invention being blocked when closed.
Fig. 9 is a schematic diagram showing that the cabinet door is blocked when being closed, and the driving unit drives the rotating rod to return.
Description of the figure:
1: refrigeration and freezing showcase
11: cabinet body
12: cabinet door
121: handle grip
13: goods articles
2: refrigeration and freezing showcase
3: cabinet body
4: cabinet door
41: pivot shaft
42: frame
5: driving unit
51: base seat
52: power motor
521: power take-off shaft 522: transmission screw
53: detection sensor
54: positioning seat 541: perforation
55: driving block
56: driving shaft seat
561: drive shaft 562: driving wheel
563: driving belt
564: coupling 5641: limit sensing rod
565: tensioning wheel
57: limit sensor
58: drive the turning rod
581: a magnetic block.
Detailed Description
Referring to fig. 2 and 3, the automatic door structure of the refrigeration and freezing showcase of the present invention is shown, the refrigeration and freezing showcase 2 has a case body 3, a plurality of cabinet doors 4 disposed on the front side surface of the case body 3, and a driving unit 5 disposed above the case body 3 and capable of driving the cabinet doors 4 to automatically open.
As shown in fig. 2, the cabinet 3 has a certain accommodating space, so that the cabinet 3 can store low-temperature goods, and the cabinet 3 is provided with a low-temperature supply machine (refrigerator) for providing low temperature (not shown in the drawing).
As shown in fig. 2 and 7, the cabinet door 4 is pivoted on the front surface of the cabinet body 3 at one side, the cabinet door 4 is pivoted on the cabinet body 3 at an upper pivot 41 and a lower pivot 41, and can be driven by the driving unit 5 to perform opening and closing actions at an angle of ninety degrees in a single-side pivoting manner; the cabinet door 4 is made of multiple layers of glass, and is provided with a metal frame 42 embedded at the periphery or up and down, so that consumers can observe goods in the cabinet body 3.
As shown in fig. 3, 4 and 5, the driving unit 5 has a base 51, and the base 51 is a plate body; the base 51 is provided with a power motor 52, the power motor 52 is electrically connected with an external power supply, thus the power motor 52 is electrically connected with a detection sensor 53 which is arranged on the base 51 and is positioned on the outer side of the base 51 at the same time through a message, and the detection sensor 53 can induce the power motor 52 to act through infrared rays, electromagnetic waves or magnetism; the power output shaft 521 of the power motor 52 is connected to a driving screw 522, the driving screw 522 is disposed through a positioning seat 54 disposed on the base 51, and further, the positioning seat 54 is provided with a through hole 541 having an internal thread for the driving screw 522 to pass through, so that the driving screw 522 is not offset when the driving screw 522 is driven to rotate by the power motor 52; a driving block 55 is coupled to the front end of the driving screw 522.
As shown in fig. 3, 4, 5 and 6, the base 51 is provided with a plurality of driving shaft seats 56, and the present invention is implemented by providing four driving shaft seats 56, and the centers of the plurality of driving shaft seats 56 are all provided with a driving shaft 561 penetrating through the base 51; the plurality of driving shaft seats 56 are arranged in two pairs, more specifically, two pairs of driving shaft seats 56 with lower heights are formed and arranged in a left-right pair mode respectively, and the invention is exemplified by two pairs of driving shaft seats 56; the driving wheel 562 is arranged outside the upper end of the driving shaft 561, the driving wheel 562 of the driving shaft seat 56 is sleeved with a driving belt 563, one end of the driving belt 563 is connected with a connecting piece 564, the other end of the connecting piece 564 is connected with the driving block 55, thereby when the driving motor 52 drives the driving screw 522 to rotate circumferentially, the driving screw 522 and the driving block 55 can be driven to move linearly in a reciprocating way, the driving block 55 can drive the driving wheel 562 to rotate, and the driving wheel 562 can drive the driving shaft 561 to rotate because the driving shaft 561 is tightly matched or locked on the driving wheel 562; one side of at least two of the plurality of driving shaft seats 56 is respectively provided with a tensioning wheel 565, and the driving belt 563 is tightly pressed by the tensioning wheel 565, thereby ensuring that the driving belt 563 can drive the driving wheel 562.
As shown in fig. 3, 4 and 5, the present invention is implemented with two connectors 564, wherein one connector 564 is provided with a limit sensor 5641, the base 51 is provided with a limit sensor 57 corresponding to the limit sensor 5641, the limit sensor 57 is implemented with a magnetic sensor such as a hall sensor, and the limit sensor 57 is electrically and signally connected to the power motor 52, so that when the connector 564 is driven by the power motor 52 to reciprocate linearly, the limit sensor 57 can sense the movement position of the connector 564 by the limit sensor 5641 and the limit sensor 57, and when the connector 564 moves to a predetermined position, the limit sensor 57 can stop the rotation of the power motor 52.
As shown in fig. 3, 4, 5, 6 and 7, a driving rotating rod 58 is connected to the lower end of each driving shaft 561 of the plurality of driving shaft seats 56, the driving rotating rod 58 is connected to the driving shaft 561 in a vertical manner, a plurality of magnetic blocks 581 with a certain magnetic attraction force are arranged on the driving rotating rod 58, and each driving rotating rod 58 is magnetically attracted to a metal frame 41 at the upper end of the cabinet door 4; therefore, when the driving shaft 561 of the driving shaft seat 56 is driven to rotate by the power motor 52 in the above manner, the driving shaft 561 drives the driving rotating rod 58 connected to the lower end to rotate at a ninety degree angle, so that a piece of the cabinet door 4 magnetically attracted by the driving rotating rod 58 can pivot at a ninety degree angle synchronously, and the cabinet door 4 can be opened or closed automatically without manual force.
As shown in fig. 2, 3, 4, 7, 8 and 9, when a consumer stands in front of the cabinet body 3 and views transparent glass of the cabinet door 4 as a commodity displayed in the cabinet body 3, the consumer can be closer to or swings with hands if selecting the commodity to be purchased, the detection sensor 53 of the driving unit 5 can sense and transmit a message and start the power motor 52, when the power motor 52 drives the transmission screw 522 to perform circumferential rotation, the transmission screw 522 synchronously drives the driving block 55 and the connecting piece 564 to perform forward linear movement, the driving block 55 can drive the driving belt 563 to rotate the driving wheel 562, the driving shaft 561 can drive the driving rod 58 connected with the lower end to perform approximately ninety-degree rotation, so that one piece of the cabinet door 4 magnetically sucked by the driving rod 58 can perform synchronous ninety-degree rotation with the pivot 41 as a single-side pivot, and simultaneously the limit sensing rod 56is driven by the connecting piece 564 to the connecting piece 57 to perform circumferential rotation, namely, the limit sensing position of the cabinet door 57 is started when the connecting piece is driven by the connecting piece 57 to perform circumferential rotation, and the limit sensing position of the cabinet door 57 is started.
As shown in fig. 2, 3, 4, 7, 8 and 9, when the consumer takes the selected commodity and leaves the sensing range of the detection sensor 53 before leaving the cabinet 3, the detection sensor 53 transmits the message again and starts the power motor 52 to rotate reversely, and when the power motor 52 drives the driving screw 522 to rotate circumferentially, the driving screw 522 synchronously drives the driving block 55 and the connecting piece 564 to move linearly backwards, the driving block 55 can drive the driving belt 563 to rotate, the driving shaft 561 can drive the driving rod 58 connected with the lower end to rotate at a ninety degree angle slightly reversely, so that one cabinet door 4 magnetically sucked by the driving rod 58 rotates synchronously at a ninety degree angle reversely with the pivot 41 as a rotation center as a single side, and meanwhile, the limit sensing rod 5641 is driven by the connecting piece 564 to another limit sensing position of the limit sensor 57, namely, the other connecting piece 564 moves synchronously, and the limit sensing rod 5641 stops rotating automatically to the position of the cabinet door 57, namely the cabinet door 4 is closed.
As shown in fig. 8 and 9, when the cabinet door 4 is driven by the driving unit 5 to perform an automatic closing operation, such as the cabinet door 4 is blocked by a commodity or other objects in the cabinet body 3, and the cabinet door 4 cannot be closed by the driving unit 5, as long as the blocking force is greater than the magnetic attraction force of the driving rotating rod 58 for magnetically attracting the cabinet door 4, the cabinet door 4 will be separated from the driving rotating rod 58, and the driving unit 5 continues to operate until stopping, thereby avoiding damage to the cabinet door 4 or the driving unit 5, and at this time, a warning signal can be sent by the driving unit 5 or an alarm additionally installed on the cabinet door 4 to inform a clerk to exclude the obstacle.
The main effect of the invention is that the refrigeration and freezing showcase 2 is provided with a case body 3, a plurality of cabinet doors 4 arranged on the front side surface of the case body 3, and a driving unit 5 arranged above the case body 3 and capable of driving the cabinet doors 4 to be opened and closed automatically; the cabinet door 4 is arranged on the cabinet body 3 through an upper pivot 41 and a lower pivot 41, the cabinet door 4 is provided with a frame 41, the driving unit 5 is at least provided with a driving rotating rod 58 and a detection sensor 53, the driving rotating rod 58 is provided with a plurality of magnetic blocks 581, the driving rotating rod 58 is magnetically attracted on the frame 41 of the cabinet door 4 through the magnetic blocks 581, and the cabinet door 4 is driven by the driving unit 5 to open and close in a single-side pivoting mode; therefore, the cabinet door 4 can be automatically opened or closed, so that the convenience of taking objects of consumers is improved.
Claims (3)
1. The automatic door structure of the refrigeration and freezing showcase is characterized in that the refrigeration and freezing showcase is provided with a case body, a plurality of cabinet doors arranged on the front side surface of the case body, and a driving unit which is arranged above the case body and can drive the cabinet doors to be automatically opened and closed; the cabinet door is arranged on the cabinet body through an upper pivot shaft and a lower pivot shaft, the cabinet door is provided with a frame, the driving unit is at least provided with a driving rotating rod and a detection sensor, the driving rotating rod is provided with a plurality of magnetic blocks, the driving rotating rod is magnetically attracted on the frame of the cabinet door through the magnetic blocks, and the cabinet door is driven by the driving unit to open and close in a single-side pivoting mode; the driving unit is provided with a base; the base is provided with a power motor which is electrically connected with an external power supply, the power motor is electrically connected with a detection sensor arranged on the base in a message way, a power output shaft of the power motor is connected with a transmission screw rod, the transmission screw rod is arranged on a positioning seat arranged on the base in a penetrating way, and the positioning seat is provided with a penetrating hole with internal threads for the transmission screw rod to penetrate; a driving block is connected with the front end of the driving screw;
the base is provided with a plurality of driving shaft seats, the centers of the driving shaft seats are provided with driving shafts penetrating through the base, the number of the driving shaft seats is four, and the four driving shaft seats are formed into a pair with two lower heights and are respectively arranged in a left-right pair manner with two higher heights; a driving wheel is arranged on the outer side of the upper end of the driving shaft, a driving belt is sleeved between the driving wheel of the driving shaft seat and the driving wheel of the driving shaft seat which is arranged oppositely, one end of the driving belt is connected with a connecting piece, and the other end of the connecting piece is connected with the driving block;
the number of the connecting pieces is two;
the lower end of each driving shaft of the plurality of driving shaft seats is linked with a driving rotating rod which is connected with the driving shaft in a vertical mode, and a plurality of magnetic blocks with certain magnetic attraction are arranged on the driving rotating rod;
the connecting piece is provided with a limit sensing rod, and the base is provided with a limit sensor corresponding to the limit sensing rod.
2. The automatic door structure of a refrigerated display cabinet of claim 1, wherein one side of at least two of the plurality of driving axle seats is provided with a tensioning wheel.
3. The automatic door structure of a refrigerated display cabinet of claim 1 wherein the limit sensor is a hall sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416038.9A CN114592767B (en) | 2020-12-04 | 2020-12-04 | Automatic door structure of refrigeration and freezing showcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011416038.9A CN114592767B (en) | 2020-12-04 | 2020-12-04 | Automatic door structure of refrigeration and freezing showcase |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114592767A CN114592767A (en) | 2022-06-07 |
| CN114592767B true CN114592767B (en) | 2024-02-20 |
Family
ID=81812765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011416038.9A Active CN114592767B (en) | 2020-12-04 | 2020-12-04 | Automatic door structure of refrigeration and freezing showcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114592767B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202187652U (en) * | 2011-08-26 | 2012-04-11 | 南京工程学院 | Toothed belt, double-shaft guide rod and grooved cam combined space mechanism of sliding-plug door |
| KR101427108B1 (en) * | 2013-10-02 | 2014-09-23 | 송원호 | Automatic windows switchgear |
| FR3012507A1 (en) * | 2013-10-29 | 2015-05-01 | G2G | ELECTROMECHANICAL DEVICE FOR CONTROLLING OPENINGS |
| KR20170049865A (en) * | 2015-10-29 | 2017-05-11 | 롯데알미늄 주식회사 | Apparatus for automatic door controlling of showcase and method thereof |
| KR20170064235A (en) * | 2015-12-01 | 2017-06-09 | 주식회사 진우전자 | Automatic open and close apparatus for open-type refrigeration showcase |
| DE102011122976B3 (en) * | 2011-05-26 | 2019-02-21 | Viessmann Kühlsysteme Gmbh | Closed cooling rack |
| CN209058552U (en) * | 2017-12-07 | 2019-07-05 | 四川研宝科技有限公司 | A kind of reach in freezer |
| CN210483371U (en) * | 2019-06-24 | 2020-05-08 | 廊坊市文博展览科技开发有限公司 | Automatic opening mechanism of cabinet door and showcase |
| CN111449456A (en) * | 2019-01-22 | 2020-07-28 | 开利公司 | Refrigerated merchandiser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060090401A1 (en) * | 2003-01-10 | 2006-05-04 | Jamison Door Company | Air heated, flexible door panel |
-
2020
- 2020-12-04 CN CN202011416038.9A patent/CN114592767B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011122976B3 (en) * | 2011-05-26 | 2019-02-21 | Viessmann Kühlsysteme Gmbh | Closed cooling rack |
| CN202187652U (en) * | 2011-08-26 | 2012-04-11 | 南京工程学院 | Toothed belt, double-shaft guide rod and grooved cam combined space mechanism of sliding-plug door |
| KR101427108B1 (en) * | 2013-10-02 | 2014-09-23 | 송원호 | Automatic windows switchgear |
| FR3012507A1 (en) * | 2013-10-29 | 2015-05-01 | G2G | ELECTROMECHANICAL DEVICE FOR CONTROLLING OPENINGS |
| KR20170049865A (en) * | 2015-10-29 | 2017-05-11 | 롯데알미늄 주식회사 | Apparatus for automatic door controlling of showcase and method thereof |
| KR20170064235A (en) * | 2015-12-01 | 2017-06-09 | 주식회사 진우전자 | Automatic open and close apparatus for open-type refrigeration showcase |
| CN209058552U (en) * | 2017-12-07 | 2019-07-05 | 四川研宝科技有限公司 | A kind of reach in freezer |
| CN111449456A (en) * | 2019-01-22 | 2020-07-28 | 开利公司 | Refrigerated merchandiser |
| CN210483371U (en) * | 2019-06-24 | 2020-05-08 | 廊坊市文博展览科技开发有限公司 | Automatic opening mechanism of cabinet door and showcase |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114592767A (en) | 2022-06-07 |
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