CN215987062U - Gateway for agricultural greenhouse based on internet of things technology - Google Patents
Gateway for agricultural greenhouse based on internet of things technology Download PDFInfo
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- CN215987062U CN215987062U CN202122546171.2U CN202122546171U CN215987062U CN 215987062 U CN215987062 U CN 215987062U CN 202122546171 U CN202122546171 U CN 202122546171U CN 215987062 U CN215987062 U CN 215987062U
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- frame cover
- agricultural greenhouse
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- 230000000670 limiting effect Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 238000001514 detection method Methods 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002829 reductive effect Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 241000219112 Cucumis Species 0.000 description 2
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a gateway for an agricultural greenhouse based on the technology of Internet of things, relates to the technical field of equipment for the agricultural greenhouse, and aims to solve the problems that a detection and transmission device in the original gateway for the agricultural greenhouse cannot automatically detect the temperature of a proper machine and does not have the operation function of adjusting a lifting automatic maintenance machine, so that the practicability of the detection and transmission device in the gateway for the agricultural greenhouse is reduced; the data device is arranged on the middle inner side of the outer frame cover; the pair of hollow chutes are respectively arranged on the left side and the right side of the data device; and the screw rods are respectively vertically connected and installed at the inner ends of the left side and the right side of the outer frame cover. According to the utility model, the loop pipe can be used for auxiliary positioning of the position of the detection and transmission device in the gateway for the agricultural greenhouse.
Description
Technical Field
The utility model relates to the technical field of equipment for agricultural greenhouses, in particular to a gateway for the agricultural greenhouses based on the technology of the Internet of things.
Background
Most of the existing agricultural greenhouses plant vegetables, melons and fruits and the like, the requirements of urban consumer groups can be basically met, the vegetables planted in a large number of greenhouses are out of season, pollution-free vegetables and melons and fruits are also well received by citizens, a gateway for the agricultural greenhouses based on the internet of things technology is applied to various agricultural greenhouses, the agricultural greenhouses are planted faster and better by using the advanced technology, and the quality of life of people is greatly improved.
For example, the patent with the patent number CN201922388255.0 relates to the technical field of equipment for agricultural greenhouses, and in particular relates to an intelligent gateway equipment for agricultural greenhouses, which comprises a gateway body with a rectangular parallelepiped structure, wherein the upper end surface of the gateway body is provided with a plurality of first heat dissipation notches, and the lower ends of the first heat dissipation notches are positioned on the upper end surface of the gateway body and are also provided with a mobile power supply; a plurality of second heat dissipation notches are further arranged on the lower end face of the gateway body in parallel along the width direction; and the two sides of the gateway body are symmetrically hinged with the antennas. This wisdom gateway equipment that green house used, simple structure improves the radiating effect of whole gateway equipment, ensures the normal operating of internals, improves the life and the availability factor of whole gateway, the extensive popularization and use of being convenient for.
When the gateway for the agricultural greenhouse based on the internet of things is used, because the detection and transmission device in the original gateway for the agricultural greenhouse cannot automatically detect the temperature of a suitable machine and does not have the operation function of adjusting the lifting automatic maintenance machine, the detection and transmission device used in the agricultural greenhouse with high temperature and high humidity is easy to have the phenomena of short service life and easy damage, the service life of the detection and transmission device in the gateway for the agricultural greenhouse is shortened, and meanwhile, the practicability of the detection and transmission device in the gateway for the agricultural greenhouse is also reduced.
Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a gateway for an agricultural greenhouse based on the internet of things technology is provided, so as to achieve the purpose of higher practical value.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a gateway for an agricultural greenhouse based on the internet of things technology, which aims to solve the problems that a detection and transmission device in the original gateway for the agricultural greenhouse cannot automatically detect the temperature suitable for a machine and does not have the operation function of adjusting a lifting automatic maintenance machine, so that the service life of the detection and transmission device in the gateway for the agricultural greenhouse is shortened, and the practicability of the detection and transmission device in the gateway for the agricultural greenhouse is reduced.
The utility model discloses purpose and efficiency of gateway for green house based on internet of things is reached by following concrete technological means:
the gateway for the agricultural greenhouse based on the Internet of things technology comprises an outer frame cover and a pair of baffles, wherein the baffles are respectively connected and installed in a rectangular groove on the inner side in the middle of the outer frame cover; the data device is arranged on the middle inner side of the outer frame cover; the pair of hollow chutes are respectively arranged on the left side and the right side of the data device; the screw rods are respectively vertically connected and installed at the inner ends of the left side and the right side of the outer frame cover; the positioning rods are respectively sleeved at the middle lower ends of the pair of screw rods in a sleeving manner, and threaded hollow grooves are formed in the middle inner sides of the positioning rods; and the bottom plates are correspondingly arranged at the right lower ends of the outer frame covers in the middle respectively.
Furthermore, the outer frame cover comprises ring sleeves, the ring sleeves are of hollow cylindrical structures, and a group of ring sleeves are respectively arranged and installed on the end face of the inner side of the outer frame cover; the baffle comprises bottom groove blocks, and the bottom groove blocks are respectively arranged on the lower side end surfaces of the baffles; the connecting grooves are respectively arranged on the upper side end surfaces of the baffle plate and the outer frame cover, and the connecting grooves on the baffle plate and the outer frame cover are respectively connected together by springs; the data device comprises a tray plate, wherein the upper end of the tray plate is of an ellipsoid-shaped structure, the lower end of the tray plate is formed by mutually supporting and installing four arc-shaped long columns, and the data device is arranged in the middle on the upper side end face of the tray plate; the sliding grooves comprise connecting rods, a pair of sliding grooves are respectively connected and installed at the top ends of the lower sides of the connecting rods, the top ends of the upper sides of the connecting rods are respectively and correspondingly connected with a group of bottom groove blocks, the connecting rods are upwards abutted against the baffle plate to enable the baffle plate to be opened when the outer frame cover moves downwards, and the synchronous connecting rods respectively pull the baffle plate downwards to enable the baffle plate to be closed when the outer frame cover moves upwards.
Further, the screw rods comprise buckling rods, hollow circular rings on the front side and the rear side of each buckling rod are respectively installed on the outer sides of the group of ring sleeve pipes in a ring sleeving manner, and a pair of screw rods are respectively installed on a cylindrical structure in which the pair of buckling rods are installed in the center; the positioning rod comprises a serrated wheel, the serrated wheel is respectively arranged on the upper side of the positioning rod in a center-to-center connection mode, hollow thread grooves are respectively formed in the hollow inner sides of the serrated wheel and the positioning rod, and a pair of screw rods are respectively arranged on the inner sides of the serrated wheel and the positioning rod in a penetrating connection mode; the bottom plate comprises a limiting rod, the limiting rod is vertically arranged and installed on the upper side end face of the bottom plate respectively, a pair of obliquely installed supporting rods is installed on the left side and the right side of the bottom plate respectively, a pair of motors is installed on the upper side end face of each supporting rod respectively, a rotating rectangular gear is installed at the top end of each motor respectively, the rectangular gear and the sawtooth wheel connected to the motors are buckled together, the sawtooth wheel is buckled to rotate due to the rotation of the motors, the pair of screws are repeatedly lifted up and down to the inner side of the positioning rod due to the rotation of the sawtooth wheel, the buckling rod controls the outer frame cover up and down repeatedly, the ring sleeve respectively corresponds to the ring sleeve to move on the outer side of the limiting rod, and accordingly a data device of the ring sleeve can be freely installed at different installation positions on the inner side and the outer side of the outer frame cover.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, as the ring sleeve is of a hollow cylindrical structure, the position of the detection and transmission device in the gateway for the agricultural greenhouse can be assisted and positioned by installing the ring sleeve, the detection and transmission device can be assisted and lifted while being regulated and controlled, the function of lifting and limiting is achieved, and the flexible controllability of the gateway for the agricultural greenhouse is greatly improved;
2. the detection and transmission device in the gateway for the agricultural greenhouse can automatically detect the temperature of the machine and adjust the operation function of the lifting automatic maintenance machine, so that the labor force for manually maintaining the machine is liberated, and meanwhile, the mechanical structure for automatically detecting and adjusting is more suitable for maintaining and maintaining the machine, the problems that the detection and transmission device used in the agricultural greenhouse with high temperature and high humidity is not long in service life and is easy to damage are solved, the service life of the detection and transmission device in the gateway for the agricultural greenhouse is greatly prolonged, and meanwhile, the practicability of the detection and transmission device in the gateway for the agricultural greenhouse is further improved.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic view of the left front upper axial view of the present invention.
Fig. 2 is a schematic view of the left front lower axial view structure of the present invention.
Fig. 3 is a front view schematically showing the overall structure of the present invention.
Fig. 4 is a front view schematically showing a part of the structure of the present invention.
FIG. 5 is an axial view of the bezel and bezel portion of the present invention.
FIG. 6 is a schematic axial view of the datar and chute portion of the present invention.
Fig. 7 is a partial axial view of the screw and positioning rod of the present invention.
Fig. 8 is an axial view of the base plate portion of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. an outer frame cover; 101. sleeving a ring pipe; 2. a baffle plate; 201. a bottom groove block; 202. connecting grooves; 3. a data device; 301. a tray plate; 4. a chute; 401. a connecting rod; 5. a screw; 501. a buckle rod; 6. positioning a rod; 601. a serrated wheel; 7. a base plate; 701. a limiting rod.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through a central medium. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 8:
the utility model provides a gateway for an agricultural greenhouse based on the technology of Internet of things, which comprises an outer frame cover 1, wherein the outer frame cover 1 comprises ring sleeves 101, the ring sleeves 101 are of hollow cylindrical structures, and a group of ring sleeves 101 are respectively arranged and installed on the end surfaces of the inner sides of the outer frame cover 1; the pair of baffles 2 are respectively connected and installed in a rectangular groove on the middle inner side of the outer frame cover 1; the baffle 2 comprises bottom groove blocks 201, and the bottom groove blocks 201 are respectively arranged on the lower side end surfaces of the baffle 2; the connecting grooves 202 are respectively arranged on the upper side end surfaces of the baffle plate 2 and the outer frame cover 1, and the connecting grooves 202 on the baffle plate 2 and the connecting grooves 202 on the outer frame cover 1 are respectively connected together by springs; the data device 3, the data device 3 is installed in the middle inside of the outer frame cover 1; the data device 3 comprises a tray plate 301, the upper end of the tray plate 301 is of an ellipsoid structure, the lower end of the tray plate 301 is provided with four arc-shaped long columns which are mutually supported and mounted, and the data device 3 is arranged in the middle of the upper side end face of the tray plate 301; the chutes 4 are respectively arranged at the left side and the right side of the data device 3; the sliding chute 4 comprises a connecting rod 401, the top end of the lower side of the connecting rod 401 is respectively connected with a pair of sliding chutes 4, the top end of the upper side of the connecting rod 401 is respectively correspondingly connected with a group of bottom chute blocks 201, when the outer bezel 1 moves downward, the link 401 is pushed upward against the bezel 2 to be opened, and when the outer bezel 1 moves upward, the synchronous connecting rods 401 respectively pull the baffle 2 downwards to close, the outer frame cover 1 and the baffle 2 are connected with each other through the sliding chutes 4, the connecting rods 401, the connecting grooves 202 and the bottom groove blocks 201, and a protective cover used on the data device 3, the structure of the outer frame cover 1 and the baffle 2 can prevent the data device 3 from being damaged by distilled water and insolation in the high-temperature and high-humidity environment of the agricultural greenhouse, and the installation of spout 4, connecting rod 401, spread groove 202 and kerve piece 201 is convenient for baffle 2 to realize the convenient of the interlock structure of opening one and close and is controlled, has improved the practicality of gateway for the green house.
Wherein, the screw rod 5 and the screw rod 5 are respectively vertically connected and installed at the inner ends of the left side and the right side of the outer frame cover 1; the screw 5 comprises a buckling rod 501, hollow circular rings on the front side and the rear side of the pair of buckling rods 501 are respectively installed on the outer sides of the group of ring sleeve pipes 101 in a ring sleeving manner, and a pair of screws 5 are respectively installed on a cylindrical structure which is installed in the middle of the pair of buckling rods 501; the positioning rods 6 are respectively sleeved at the lower middle ends of the screw rods 5 in a sleeving manner, and threaded hollow grooves are formed in the inner sides of the middle parts of the positioning rods 6; the positioning rod 6 comprises a serrated wheel 601, the serrated wheels 601 are respectively connected and installed on the upper side of the positioning rod 6 in the middle, hollow threaded grooves are respectively formed in the hollow inner sides of the serrated wheel 601 and the positioning rod 6, and a pair of screw rods 5 are respectively installed on the inner sides of the serrated wheel 601 and the positioning rod 6 in a penetrating connection mode; the bottom plates 7 are respectively and correspondingly arranged at the right lower end of the middle part of the outer frame cover 1; the bottom plate 7 comprises a limiting rod 701, the limiting rods 701 are respectively vertically arranged and installed on the upper side end face of the bottom plate 7, a pair of obliquely installed support rods are respectively installed on the left side and the right side of the bottom plate 7, a pair of motors are respectively installed on the upper side end faces of the support rods, rotating rectangular gears are respectively installed at the top ends of the motors, the rectangular gears and the sawtooth wheels 601 connected to the motors are mutually buckled together, the rectangular gears are buckled with the sawtooth wheels 601 to rotate due to the rotation of the motors, the rotating of the sawtooth wheels 601 enables a pair of screw rods 5 to repeatedly move up and down on the inner sides of the positioning rods 6, the buckling rods 501 repeatedly control the outer frame cover 1 up and down, the ring sleeve pipes 101 respectively move on the outer sides of the limiting rods 701 corresponding to ring sleeves, so that the data devices 3 can be freely installed at different installation positions on the inner side and the outer side of the outer frame cover 1, the screw rods 5 can realize the lifting control of the outer frame cover 1 at the upper end by the buckling rods 501 through structures such as thread grooves of the positioning rods 6, and the rectangular gears on the motors at the two ends drive the sawtooth wheel 601 to rotate, and meanwhile, a moving structure of the whole protective cover for protecting the gateway for the agricultural greenhouse is realized, the outer frame cover 1 can be controlled to move downwards when the data device 3 detects that the temperature is suitable for the use of a machine through the up-and-down movement of the structures such as the screw rod 5 and the like of the outer frame cover 1, the data device 3 is exposed at the outer end of the upper side of the outer frame cover 1, when the data device 3 detects the temperature which is not suitable for the use of the machine, the outer frame cover 1 is moved upwards until the outer frame cover 1 completely shields the data device 3, the daily maintenance of the data device 3 is automatically completed, and the service life of the gateway for the agricultural greenhouse is prolonged.
The specific use mode and function of the embodiment are as follows:
in the using process, firstly, the bottom plate 7 is installed at the position to realize the positioning of the gateway position for the agricultural greenhouse, then the data device 3 and the tray plate 301 are installed on the bottom plate 7 in the middle to realize the positioning installation of the main detection and data transmission device, then a group of limiting rods 701 and a group of ring sleeve pipes 101 are connected in a ring sleeve mode, the outer frame cover 1 is installed on the outer side of the data device 3, a plurality of temperature and humidity sensors are installed on the outer side of the data device 3 and are automatically regulated and controlled according to the temperature and humidity in the agricultural greenhouse, when the temperature is not suitable for the use of the data device 3, the motor and the rotation of the rectangular gear on the motor clamp the sawtooth wheel 601 in a rotating mode to control the screw rod 5 to rotate, the screw rod 5 moves downwards in the positioning rod 6 and synchronously drives the clamping rod 501 and the outer frame cover 1 to move upwards and downwards until the complete ring sleeve protection of the outer frame cover 1 on the data device 3 is completed, when the data device 3 detects that the temperature is suitable for the machine, the structures carry out reverse operation, so that the data device 3 is arranged on the upper side of the outer frame cover 1, and the data device 3 is completely exposed and arranged in the agricultural greenhouse;
in addition, the baffle 2 is installed at the rectangular hollow-out groove on the inner side of the outer frame cover 1 through the installation of the sliding groove 4, the connecting rod 401, the connecting groove 202 and the bottom groove block 201, the opening and closing structure of the outer frame cover 1 formed by the baffle 2 is realized, the data device 3 is convenient to automatically open and close when moving out and moving in the process of propping against the end face on the inner side of the baffle 2, and therefore the using process of the device is completed.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. The gateway for the agricultural greenhouse based on the Internet of things technology is characterized by comprising an outer frame cover,
the pair of baffles are respectively connected and installed in the rectangular groove on the middle inner side of the outer frame cover;
the data device is arranged on the middle inner side of the outer frame cover;
the spout, a pair of fretwork spout is installed respectively in the left and right sides of data ware.
2. The gateway for the agricultural greenhouse based on the technology of the Internet of things as claimed in claim 1, further comprising,
the screw rods are respectively vertically connected and installed at the inner ends of the left side and the right side of the outer frame cover;
the positioning rods are respectively sleeved at the middle lower ends of the pair of screw rods in a sleeving manner, and threaded hollow grooves are formed in the middle inner sides of the positioning rods;
and the bottom plates are correspondingly arranged at the right lower ends of the outer frame covers in the middle respectively.
3. The gateway for an agricultural greenhouse based on the technology of the Internet of things as claimed in claim 1, wherein the outer frame cover comprises,
the ring sleeves are of hollow cylindrical structures, and a group of ring sleeves are respectively arranged and installed on the inner side end face of the outer frame cover.
4. The gateway for the agricultural greenhouse based on the technology of the Internet of things as claimed in claim 1, wherein the baffle comprises,
the bottom groove blocks are respectively arranged on the lower side end surfaces of the baffles;
and the connecting grooves are respectively arranged on the upper side end surfaces of the baffle and the outer frame cover, and are respectively connected with each other by a spring.
5. The gateway for the agricultural greenhouse based on the technology of the Internet of things as claimed in claim 1, wherein the data device comprises,
the tray board, tray board upper end are ellipsoid column structure, and the lower extreme of tray board is four circular-arc long posts and supports the installation each other, and installs the data ware between two parties on the upside terminal surface of tray board.
6. The gateway for the agricultural greenhouse based on the technology of the Internet of things as claimed in claim 1, wherein the chute comprises,
the connecting rod, the downside top of connecting rod is connected the installation respectively and is paired spout, and the upside top of connecting rod corresponds respectively and connects a set of kerve piece, upwards supports the baffle with the connecting rod when the downward motion of outer frame cover makes it open, and when the upward motion of outer frame cover, synchronous connecting rod will drag the baffle downwards respectively and make it close.
7. The gateway for the agricultural greenhouse based on the technology of the Internet of things as claimed in claim 2, wherein the screw comprises,
the hollow rings on the front side and the rear side of the pair of buckle rods are respectively arranged on the outer sides of the group of ring sleeve pipes in a ring sleeved mode, and the cylindrical structures arranged in the middle of the pair of buckle rods are respectively provided with a pair of screw rods.
8. The gateway for the agricultural greenhouse based on the technology of the Internet of things as claimed in claim 2, wherein the positioning rod comprises,
the serrated wheel is connected and installed on the upper side of the positioning rod in the middle respectively, hollow threaded grooves are formed in the hollow inner sides of the serrated wheel and the positioning rod respectively, and the pair of screws are installed on the inner sides of the serrated wheel and the positioning rod in a penetrating connection mode respectively.
9. The gateway for an agricultural greenhouse based on the technology of the Internet of things as claimed in claim 2, wherein the bottom plate comprises,
the limiting rod is vertically arranged and installed on the upper side end face of the bottom plate respectively, a pair of obliquely installed supporting rods is installed on the left side and the right side of the bottom plate respectively, a pair of motors is installed on the upper side end face of each supporting rod respectively, rotating rectangular gears are installed at the top ends of the motors respectively, the rectangular gears and the sawtooth gears connected to the motors are buckled together, the sawtooth gears are buckled to rotate due to the rotation of the motors, the pair of screws are repeatedly lifted up and down to move on the inner sides of the positioning rods due to the rotation of the sawtooth gears, the buckling rods are repeatedly controlled on the outer frame cover up and down, the ring sleeves respectively correspond to the ring sleeves to move on the outer side of the limiting rods, and accordingly the data device can be freely installed at different installation positions on the inner side and the outer side of the outer frame cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122546171.2U CN215987062U (en) | 2021-10-22 | 2021-10-22 | Gateway for agricultural greenhouse based on internet of things technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122546171.2U CN215987062U (en) | 2021-10-22 | 2021-10-22 | Gateway for agricultural greenhouse based on internet of things technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215987062U true CN215987062U (en) | 2022-03-08 |
Family
ID=80512699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122546171.2U Expired - Fee Related CN215987062U (en) | 2021-10-22 | 2021-10-22 | Gateway for agricultural greenhouse based on internet of things technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215987062U (en) |
-
2021
- 2021-10-22 CN CN202122546171.2U patent/CN215987062U/en not_active Expired - Fee Related
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