CN219499283U - Photovoltaic power generation device with rotation avoidance function - Google Patents
Photovoltaic power generation device with rotation avoidance function Download PDFInfo
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- CN219499283U CN219499283U CN202320618955.8U CN202320618955U CN219499283U CN 219499283 U CN219499283 U CN 219499283U CN 202320618955 U CN202320618955 U CN 202320618955U CN 219499283 U CN219499283 U CN 219499283U
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- cross beam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to a photovoltaic power generation device with a rotation avoiding function, belonging to the technical field of photovoltaic power generation, comprising: a support structure; the fixed cross beam is fixedly connected with the support structure column body; the photovoltaic plate can be connected to the fixed cross beam in an up-and-down overturning way, and the front surface of the photovoltaic plate is inclined upwards; the fixing frame is fixedly connected to the support structure column body, the upper end and the lower end of the fixing frame are respectively and correspondingly located above and below the fixed cross beam, a first elastic telescopic rod is correspondingly hinged between the upper end of the fixing frame and the upper end of the photovoltaic panel, and a second elastic telescopic rod is correspondingly hinged between the lower end of the fixing frame and the lower end of the photovoltaic panel. According to the utility model, when the photovoltaic panel needs strong wind, the photovoltaic panel can turn up and down around the fixed cross beam, so that the intersection angle between the panel surface of the photovoltaic panel and the strong wind is reduced, the influence of wind force on the photovoltaic panel is reduced, and the deflection force on the supporting structure is reduced.
Description
Technical Field
The utility model relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation device with a rotation avoiding function.
Background
Solar energy is known to be a green clean energy source, and is favored by various countries, and popularization and use of solar panels are particularly emphasized in China, and a common solar panel mounting mode is fixed mounting.
The Chinese patent with the public number of CN205566196U discloses a photovoltaic power generation device, which comprises a bracket, a supporting foundation arranged on the ground and used for supporting the bracket, a solar panel fixed on the bracket and a storage battery electrically connected with the solar panel, wherein the bracket comprises a vertical main bracket and at least two transverse sub-brackets fixed on the vertical main bracket, each transverse sub-bracket is distributed along the longitudinal direction of the vertical main bracket and is parallel to each other, and at least one solar panel is supported on each transverse sub-bracket; but the wind-proof energy-saving type wind-proof energy-saving device has no wind-proof capability and is easy to damage in strong wind weather.
Disclosure of Invention
The present utility model has been made to solve the above-mentioned problems, and an object of the present utility model is to provide a photovoltaic power generation device having a rotation avoidance function.
The utility model realizes the above purpose through the following technical scheme:
a photovoltaic power generation device with a rotational avoidance function, comprising:
a support structure;
the fixed cross beam is fixedly connected with the support structure column body;
the photovoltaic plate can be connected to the fixed cross beam in an up-and-down overturning way, and the front surface of the photovoltaic plate is inclined upwards;
the fixing frame is fixedly connected to the support structure column body, the upper end and the lower end of the fixing frame are respectively and correspondingly located above and below the fixed cross beam, a first elastic telescopic rod is correspondingly hinged between the upper end of the fixing frame and the upper end of the photovoltaic panel, and a second elastic telescopic rod is correspondingly hinged between the lower end of the fixing frame and the lower end of the photovoltaic panel.
Preferably, the vertical distance between the hinge point of the photovoltaic plate corresponding to the first elastic telescopic rod and the hinge point of the photovoltaic plate corresponding to the fixed cross beam is different from the vertical distance between the hinge point of the photovoltaic plate corresponding to the second elastic telescopic rod and the hinge point of the photovoltaic plate corresponding to the fixed cross beam.
Preferably, each of the first elastic telescopic rod and the second elastic telescopic rod has a plurality of telescopic sections.
Preferably, the fixed cross beam is provided with a plurality of hinge parts along the length direction at intervals, and the back of the photovoltaic panel is provided with a plurality of hinge joints which are hinged with the hinge parts in a one-to-one correspondence manner.
Preferably, the support structure comprises a base, a support column is arranged in the middle of the top surface of the base, and the fixed cross beam and the fixed frame are correspondingly connected with the support column.
Preferably, the support column includes:
the lower end of the bottom column is correspondingly connected with the base;
the lower end of the mounting column is detachably connected to the upper end of the bottom column, and the mounting column is coaxial with the bottom column;
the mounting column body is provided with the fixed cross beam and the photovoltaic panel.
Preferably, a mounting hole is formed in the middle of the top surface of the base, and the lower end part of the bottom post can be rotatably inserted into the mounting hole;
the support structure further includes an adjustment assembly for driving the bottom pillar to rotate.
Preferably, the adjusting assembly comprises a worm wheel fixedly sleeved on the column body of the bottom column, a worm meshed with the worm wheel, and an adjusting motor with an output shaft in driving connection with the worm.
Preferably, the mounting column shaft is provided with a plurality of fixing cross beams and photovoltaic panels at intervals along the length direction thereof.
Preferably, the middle part of the fixed cross beam is correspondingly connected with the supporting structure, and the positions of the fixed cross beam on two sides of the supporting structure are respectively provided with one photovoltaic panel.
The beneficial effects are that:
1. when the photovoltaic board needs strong wind, the photovoltaic board can overturn from top to bottom around fixed crossbeam for the intersection angle between photovoltaic board face and the strong wind diminishes, and then has reduced the influence that the photovoltaic board received wind-force, and then also can reduce bearing structure and receive deflection, has solved among the prior art and has not had the ability of keeping away wind, runs into the technical problem that the weather of strong wind is easy to damage.
Additional features and advantages of the utility model will be set forth in the description which follows, or may be learned by practice of the utility model.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model from another perspective;
FIG. 3 is a front view of the present utility model;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is an enlarged partial cross-sectional view of I in FIG. 4;
fig. 6 is a schematic structural view of one example of the elastic telescopic rod of the present utility model.
The reference numerals are explained as follows:
1. a support structure; 11. a base; 12. a support column; 121. a bottom post; 122. a mounting column; 13. an adjustment assembly; 131. a worm wheel; 132. a worm; 2. fixing the cross beam; 3. a photovoltaic panel; 31. a hinge joint; 4. a fixing frame; 5. a first elastic telescopic rod; 6. and a second elastic telescopic rod.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and for simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present utility model, unless expressly stated or limited otherwise, a first feature may include first and second features directly contacting each other, either above or below a second feature, or through additional features contacting each other, rather than directly contacting each other. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being below, beneath, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is less level than the second feature.
As shown in fig. 1-6, a photovoltaic power generation device with a rotation avoidance function comprises a support structure 1 formed by a base 11 and a support column 12, wherein the support column 12 is provided with at least one fixed cross beam 2 along the length direction of the support column, the middle part of the fixed cross beam 2 is correspondingly fixedly connected with the column shaft of the support column 12, and the positions of the fixed cross beam 2 positioned on two sides of the support structure 1 are correspondingly hinged with a photovoltaic panel 3, wherein the photovoltaic panel 3 can be overturned when encountering strong wind, so that an included angle between the panel surface of the photovoltaic panel 3 and the airflow direction is reduced; the support column 12 is also provided with a fixing frame 4, wherein the upper end of the fixing frame 4 is positioned above the fixed cross beam 2, a first elastic telescopic rod 5 is arranged between the upper end of the fixing frame 4 and the upper end part of the back surface of the photovoltaic panel 3, and two ends of the first elastic telescopic rod 5 are hinged; the lower end of the fixed frame 4 is positioned below the fixed cross beam 2, and a second elastic telescopic rod 6 is arranged between the lower end of the fixed frame 4 and the lower end part of the back surface of the photovoltaic panel 3, wherein both ends of the second elastic telescopic rod 6 are hinged, and the length of the second elastic telescopic rod 6 is longer than that of the first elastic telescopic rod 5;
furthermore, the rear side of the fixing frame 4 is a vertically arranged frame, the middle parts of the upper and lower cross beams of the frame are respectively provided with a horizontal rod extending forwards, and the front ends of the horizontal rods are fixedly arranged on the support body of the support column 12; the upper ends of the left side and the right side of the frame are hinged with first elastic telescopic rods 5, and the lower ends of the left side and the right side of the frame are hinged with second elastic telescopic rods 6.
Specifically, as shown in fig. 2 and 4, most of the weight of the photovoltaic panel 3 is located at the front side of the support structure 1, and most of the weight of the fixing frame 4 is located at the rear side of the support structure 1, so that the support structure 1 is stressed and balanced as a whole;
more specifically, the position of the center of gravity of the photovoltaic panel 3 and the position of the center of gravity of the mount 4 can be adaptively adjusted with reference to the flow direction of the local air flow.
The photovoltaic panel 3 can be fixed at a moving height under the action of the fixed cross beam 2, can be relatively stable under the action of the first elastic telescopic rod 5 and the second elastic telescopic rod 6, and can be inclined towards the front side of the photovoltaic panel 3 and turned up and down when encountering wind; the specific inclination angle of the photovoltaic panel 3 can be set according to the solar radiation angle at noon, so the length ratio of the first elastic telescopic rod 5 to the second elastic telescopic rod 6 is not limited;
the first elastic telescopic rod 5 and the second elastic telescopic rod 6 of different elastic coefficients can be selected as required.
When the photovoltaic panel 3 encounters strong wind, the first elastic telescopic rod 5 and the second elastic telescopic rod 6 are different in elastic coefficient, so that the wind resistance is different, the photovoltaic panel 3 can rotate, the included angle between the panel surface of the photovoltaic panel 3 and the air flow direction is reduced, and the stress of the photovoltaic panel 3 and the deflection force borne by the supporting structure 1 are reduced.
Further, the vertical distance between the hinge point of the photovoltaic panel 3 corresponding to the first elastic telescopic rod 5 and the hinge point of the photovoltaic panel 3 corresponding to the fixed cross beam 2 is different from the vertical distance between the hinge point of the photovoltaic panel 3 corresponding to the second elastic telescopic rod 6 and the hinge point of the photovoltaic panel 3 corresponding to the fixed cross beam 2;
specifically, the limitation is performed according to the actual installation area, for example, when the local air flow mostly is that the plate surface of the photovoltaic plate 3 is inclined upwards, the vertical distance between the hinge point of the photovoltaic plate 3 corresponding to the first elastic telescopic rod 5 and the hinge point of the photovoltaic plate 3 corresponding to the fixed cross beam 2 is smaller than the vertical distance between the hinge point of the photovoltaic plate 3 corresponding to the second elastic telescopic rod 6 and the hinge point of the photovoltaic plate 3 corresponding to the fixed cross beam 2; when the local air flow mostly is vertical to the surface of the photovoltaic plate 3 and falls off, the vertical distance between the hinge point of the photovoltaic plate 3 corresponding to the first elastic telescopic rod 5 and the hinge point of the photovoltaic plate 3 corresponding to the fixed cross beam 2 is larger than the vertical distance between the hinge point of the photovoltaic plate 3 corresponding to the second elastic telescopic rod 6 and the hinge point of the photovoltaic plate 3 corresponding to the fixed cross beam 2.
When the photovoltaic panel 3 encounters strong wind, the stress on two sides of the position, hinged to the fixed cross beam 2, of the photovoltaic panel 3 is different, the photovoltaic panel 3 can be turned over, and the included angle between the panel surface of the photovoltaic panel 3 and the airflow direction is gradually reduced along with the turning of the photovoltaic panel 3.
In some embodiments, to increase the expansion ratio of the first elastic expansion link 5 and the second elastic expansion link 6, each of the first elastic expansion link 5 and the second elastic expansion link 6 has a plurality of expansion sections; for example, taking the first elastic telescopic rod 5 as an example, as shown in fig. 6, the first elastic telescopic rod 5 has two telescopic parts, that is, the first elastic telescopic rod 5 includes one fixed cylinder, one telescopic cylinder, and one telescopic rod; the telescopic cylinder is correspondingly sleeved with the fixed cylinder, and the telescopic cylinder and the fixed cylinder are elastically telescopic through a spring; the telescopic rod and the telescopic cylinder are correspondingly sleeved, and the telescopic cylinder and the fixed cylinder are elastically telescopic through another spring.
In some embodiments, as shown in fig. 2, to increase the stability of the photovoltaic panel 3, a plurality of hinge parts are arranged at the position of the fixed beam 2 on one side of the supporting structure 1 along the length direction of the fixed beam 2 at intervals, and a plurality of hinge joints 31 hinged with the hinge parts in a one-to-one correspondence are arranged on the back surface of the photovoltaic panel 3;
further, the position of the fixed cross beam 2 corresponding to the photovoltaic panel 3 is provided with a plurality of U-shaped grooves along the length direction, the back of the photovoltaic panel 3 is provided with a hinge joint 31 corresponding to each U-shaped groove, and the hinge joint 31 is connected with two side walls of the corresponding U-shaped groove through a pin shaft;
further, all the pins are one shaft, that is, one end of the shaft is movably inserted through all the hinges 31 and the U-shaped grooves in sequence.
Further, as shown in fig. 2; each photovoltaic panel 3 corresponds to one first elastic telescopic rod 5 and one second elastic telescopic rod 6, and the connection position of the photovoltaic panel 3 and the first elastic telescopic rod 5 or the second elastic telescopic rod 6 is positioned in the middle of the photovoltaic panel 3 in the width direction; in other embodiments, each photovoltaic panel 3 may also correspond to two first elastic telescopic rods 5 and two second elastic telescopic rods 6, where the connection positions of the photovoltaic panel 3 and the two first elastic telescopic rods 5 or the two second elastic telescopic rods 6 are respectively located at two sides of the photovoltaic panel 3.
In some embodiments, to set the height of the support column 12 according to the actual topography, the support column 12 includes a bottom column 121 and a mounting column 122 with lower ends correspondingly connected to the base 11, wherein the mounting column 122 may be docked in a plurality of shorter columns; wherein the number of the columns is set according to the installation positions of the device; for example, when the device is installed in a sunny and less wind-powered location, the mounting posts 122 may have a greater number of post interfaces; when the device is installed in a place with sufficient sunlight and high annual wind force, the installation column 122 can be formed by fewer column butt joints; when the device is installed on a sunny hillside, the installation column 122 can be formed by butt joint of more columns, and the columns below can hardly be radiated by sunlight, so that the photovoltaic panel 3 can not be installed.
Specifically, as shown in fig. 1-4, taking two cylinders as an example for the support column 12, the support column 12 includes a cylinder I and a cylinder ii, the lower end of the cylinder I is correspondingly and coaxially connected with the upper end of the base 11 through a flange, and the upper end of the cylinder I is correspondingly and coaxially connected with the lower end of the cylinder ii through a flange; according to the requirement, be equipped with a fixed beam 2 and photovoltaic board 3 on the cylinder I, also be equipped with a fixed beam 2 and photovoltaic board 3 on the cylinder II.
In some embodiments, as shown in fig. 4, a mounting hole is formed in the middle of the top surface of the base 11, and the lower end of the bottom post 121 can be rotatably inserted into the mounting hole and connected through a bearing;
to increase the possibility of rotation of the photovoltaic panel 3 with the position of the sun, the support structure 1 also has an adjustment assembly 13 for driving the rotation of the bottom post 121;
specifically, as shown in fig. 4-5, the adjusting assembly 13 includes a worm wheel 131 fixedly sleeved on the column body of the bottom column 121, a worm 132 meshed with the worm wheel 131, and an adjusting motor with an output shaft in driving connection with the worm 132; the worm 132 is rotatably coupled to the base 11, as needed, the adjustment motor is coupled to the base 11 by bolts,
the setting can drive worm 132 through accommodate motor and rotate like this, and worm 132 drives worm wheel 131 and rotates, and then drives the sill pillar 121 and rotate, and sill pillar 121 drives the erection column 122 and rotate, and erection column 122 drives fixed cross beam 2 and mount 4 and rotates, and then makes photovoltaic board 3 around erection column 122 central axis circumferential motion.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and their equivalents.
Claims (10)
1. Photovoltaic power generation device with rotate and dodge function, characterized by comprising:
a support structure (1);
the fixed cross beam (2) is fixedly connected with the column body of the supporting structure (1);
the photovoltaic panel (3) can be connected to the fixed cross beam (2) in an up-and-down turnover way, and the front surface of the photovoltaic panel (3) is inclined upwards;
the fixing frame (4) is fixedly connected to the column shaft of the supporting structure (1), the upper end and the lower end of the fixing frame (4) are respectively and correspondingly located above and below the fixed cross beam (2), a first elastic telescopic rod (5) is correspondingly hinged between the upper end of the fixing frame (4) and the upper end of the photovoltaic panel (3), and a second elastic telescopic rod (6) is correspondingly hinged between the lower end of the fixing frame (4) and the lower end of the photovoltaic panel (3).
2. The photovoltaic power generation device with a rotation avoidance function according to claim 1, wherein: the vertical distance between the hinge point of the photovoltaic panel (3) corresponding to the first elastic telescopic rod (5) and the hinge point of the photovoltaic panel (3) corresponding to the fixed cross beam (2) is different from the vertical distance between the hinge point of the photovoltaic panel (3) corresponding to the second elastic telescopic rod (6) and the hinge point of the photovoltaic panel (3) corresponding to the fixed cross beam (2).
3. The photovoltaic power generation device with a rotation avoidance function according to claim 1 or 2, characterized in that: the first elastic telescopic rod (5) and the second elastic telescopic rod (6) are provided with a plurality of sections of telescopic parts.
4. The photovoltaic power generation device with a rotation avoidance function according to claim 1, wherein: the fixed cross beam (2) is provided with a plurality of hinge parts along the length direction at intervals, and the back of the photovoltaic panel (3) is provided with a plurality of hinge joints (31) which are hinged with the hinge parts in one-to-one correspondence.
5. The photovoltaic power generation device with a rotation avoidance function according to claim 1, wherein: the supporting structure (1) comprises a base (11), a supporting column (12) is arranged in the middle of the top surface of the base (11), and the fixed cross beam (2) and the fixed frame (4) are correspondingly connected with the supporting column (12).
6. The photovoltaic power generation device with a rotation avoidance function according to claim 5, wherein: the support column (12) comprises:
a bottom column (121) having a lower end thereof correspondingly connected to the base (11);
a mounting column (122) the lower end of which is detachably connected to the upper end of the bottom column (121), and the mounting column (122) is coaxial with the bottom column (121);
the column body of the mounting column (122) is provided with the fixed cross beam (2) and the photovoltaic panel (3).
7. The photovoltaic power generation device with a rotation avoidance function according to claim 6, wherein: the middle part of the top surface of the base (11) is provided with a mounting hole, and the lower end part of the bottom post (121) can be rotatably inserted into the mounting hole;
the support structure (1) further comprises an adjustment assembly (13) for driving the rotation of the bottom post (121).
8. The photovoltaic power generation device with a rotation avoidance function according to claim 7, wherein: the adjusting assembly (13) comprises a worm wheel (131) fixedly sleeved on the column body of the bottom column (121), a worm (132) meshed with the worm wheel (131), and an adjusting motor with an output shaft in driving connection with the worm (132).
9. The photovoltaic power generation device with a rotation avoidance function according to claim 6, wherein: the mounting columns (122) are arranged on the column body along the length direction at intervals, and a plurality of fixing cross beams (2) and photovoltaic panels (3) are arranged on the column body at intervals.
10. The photovoltaic power generation device with a rotation avoidance function according to claim 1, wherein: the middle part of the fixed cross beam (2) is correspondingly connected with the supporting structure (1), and the positions of the fixed cross beam (2) positioned on two sides of the supporting structure (1) are respectively provided with a photovoltaic panel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320618955.8U CN219499283U (en) | 2023-03-27 | 2023-03-27 | Photovoltaic power generation device with rotation avoidance function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320618955.8U CN219499283U (en) | 2023-03-27 | 2023-03-27 | Photovoltaic power generation device with rotation avoidance function |
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| Publication Number | Publication Date |
|---|---|
| CN219499283U true CN219499283U (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320618955.8U Active CN219499283U (en) | 2023-03-27 | 2023-03-27 | Photovoltaic power generation device with rotation avoidance function |
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| Country | Link |
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| CN (1) | CN219499283U (en) |
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2023
- 2023-03-27 CN CN202320618955.8U patent/CN219499283U/en active Active
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