CN219371349U - Carbon fiber composite material angle-adjustable satellite antenna - Google Patents
Carbon fiber composite material angle-adjustable satellite antenna Download PDFInfo
- Publication number
- CN219371349U CN219371349U CN202320107658.7U CN202320107658U CN219371349U CN 219371349 U CN219371349 U CN 219371349U CN 202320107658 U CN202320107658 U CN 202320107658U CN 219371349 U CN219371349 U CN 219371349U
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- reflecting surface
- satellite antenna
- composite material
- carbon fiber
- fiber composite
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- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 32
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- 239000002184 metal Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 239000007769 metal material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Aerials With Secondary Devices (AREA)
Abstract
The utility model relates to the field of satellite antennas, and particularly discloses a carbon fiber composite material angle-adjustable satellite antenna which comprises a base, a main support, a screw rod, a reflecting surface, a supporting rod and a wave collector, wherein the lower end of the main support is rotationally connected with one end of the base, the reflecting surface is arranged on the upper side of the front end of the main support, a sliding groove is arranged on the back of the main support, one end of the screw rod is in sliding connection with the sliding groove through a sliding block, a screw rod nut seat is arranged at the upper end of the base, threads are arranged on the other side of the screw rod and penetrate through the screw rod nut seat, the wave collector is arranged at the front end of the reflecting surface, and the wave collector is connected with the reflecting surface through the supporting rod. The utility model has simple structure, the joints are connected by adopting the mode of embedding nuts in the composite material and matching bolts, the damage caused by installation is effectively avoided, the pitch angle of the satellite antenna is simply adjusted, in addition, the weight is lightened, the integral strength of the structure is higher, and the corrosion resistance is stronger because a plurality of parts of the satellite antenna are made of carbon fiber composite materials.
Description
Technical Field
The utility model relates to the field of satellite antennas, in particular to an angle-adjustable satellite antenna made of carbon fiber composite materials.
Background
The traditional satellite antenna generally comprises a metal reflecting surface and a metal bracket body, and is usually used in an outdoor environment, the outdoor environment can cause serious corrosion to the metal reflecting surface and the metal bracket, the corrosion of the reflecting surface can influence the signal receiving, and the corrosion of the metal bracket can reduce the structural strength of the antenna. The satellite antenna is used in a plurality of important fields, so the requirements on the strength, corrosion resistance and use convenience of the satellite antenna are high, and the carbon fiber composite material has the advantages of high tensile strength, strong corrosion resistance, low thermal conductivity and the like, is widely applied in the satellite antenna field, and is one of the main development trends of future satellite antennas. The carbon fiber composite material is solidified by resin layer by using carbon fiber cloth, the problem of interlayer fracture is easy to occur due to improper use, in the prior art, the carbon fiber composite material is used for replacing a reflecting surface and a part of a bracket of a satellite antenna, in the use process of the material, a fixing device is made of a metal material, the connection part of the metal material and the carbon fiber material is usually fixed by using a bolt and pretightening force mode, the unreasonable connection mode is easy to damage the carbon fiber composite material, so that the strength of the integral structure of the satellite antenna is reduced, and in addition, the angle adjustment of the existing satellite antenna is difficult. Aiming at the problems, the novel satellite antenna with the adjustable angle made of the carbon fiber composite material is researched and designed, and the problems existing in the existing satellite antenna are very necessary to be overcome.
Disclosure of Invention
In order to solve the problems that the satellite antenna in the existing satellite antenna is easy to corrode in an outdoor environment so as to influence the overall structural strength of the antenna and the signal receiving, in addition, the reflecting surface of the existing composite satellite antenna is connected with the bracket in a mode of applying pretightening force by bolts, so that the carbon fiber composite material is damaged, the strength of the overall structure of the satellite antenna is reduced, and the angle adjustment operation of the existing satellite antenna is difficult, the utility model provides the angle-adjustable satellite antenna made of the carbon fiber composite material.
The technical scheme adopted by the utility model for achieving the purpose is as follows: the utility model provides a carbon fiber composite material angularly adjustable satellite antenna, includes base, main support, lead screw, reflecting surface, bracing piece and wave collector, the lower extreme of main support with the one end of base rotates to be connected, the reflecting surface set up in the upside of main support front end, the main support back is equipped with the spout, lead screw one end with through the slider with spout sliding connection, the base upper end is equipped with lead screw nut seat, the lead screw opposite side is equipped with the screw thread and passes lead screw nut seat, wave collector set up in the front end of reflecting surface, wave collector pass through the bracing piece with the reflecting surface is connected.
Preferably, the upper end of base is equipped with the support mounting groove, the lower extreme of main support through main support and base connecting bolt and self-locking nut with the mounting groove is connected, through setting up self-locking nut, in the connection process, only connects, does not produce pretightning force to the connecting piece, prevents to cause the destruction to the main support.
Preferably, the upper end of the main support is provided with a cross-shaped connecting frame, the reflecting surface is provided with a reflecting surface embedded nut, a through hole is formed in the position, corresponding to the reflecting surface embedded nut, of the cross-shaped connecting frame, and bolts penetrate through the through hole of the cross-shaped connecting frame and are screwed with the reflecting surface embedded nut to fix the reflecting surface on the cross-shaped connecting frame.
Preferably, the reflecting surface is fixed with the main support through bolts after being bonded by an adhesive, so that the reflecting surface is connected with the main support more firmly.
Preferably, a positioning block is sleeved on the radial outer side of one end of the screw rod, a stop block is sleeved on the radial outer side of the positioning block, the stop block is connected with the sliding block through a connecting body, a rotating handle is arranged at the other end of the screw rod, and after the positioning block and the stop block are arranged, the sliding block can be controlled to slide up and down in the sliding groove by rotating the rotating handle, so that the pitch angle of the satellite antenna can be adjusted.
Preferably, the positioning block is welded with the screw rod, the stop block is welded with the connecting body, and the connecting body is connected with the sliding block through a bolt.
Preferably, the base, the main support, the reflecting surface, the supporting rod and the rotating handle are all made of carbon fiber composite materials.
Preferably, the screw nut seat is provided with a screw positioning hole and a positioning bolt, the positioning bolt passes through the screw positioning hole and is abutted to the screw, the positioning bolt is used for fixing the position of the screw, the screw nut seat is also provided with a screw nut seat embedded pin, and the base is provided with a screw nut seat embedded groove matched with the screw nut seat embedded pin.
Preferably, the supporting rod is fixed with the reflecting surface through bolts after being bonded by the adhesive, so that the supporting rod is fixed with the reflecting surface more firmly.
Preferably, the base is provided with a fixing bolt hole for bolting the fixing bolt hole to fix the base at the mounting position.
The satellite antenna with the adjustable angle made of the carbon fiber composite material has the advantages of simple structure, good dimensional stability, easiness in processing and convenience in use, is suitable for being used in outdoor severe environments, and is connected at a plurality of joints in a mode of embedding nuts in the composite material and matching bolts, so that a metal connecting piece cannot damage the composite material, the damage to parts in the installation process of the satellite antenna can be prevented, the service life of the whole satellite antenna is affected, the characteristics of the carbon fiber composite material are fully considered in the overall structural design, and the damage caused by installation is effectively avoided. When the pitch angle of the satellite antenna is adjusted, the angle can be manually adjusted only by loosening one fixing bolt, and the adjustment efficiency of the installation angle of the satellite antenna is improved. Because the base, the main support, the reflecting surface, the supporting rod and the rotating handle are all made of carbon fiber composite materials, the overall weight of the satellite antenna is reduced, but the overall strength of the structure is higher, and the corrosion resistance is also stronger.
Drawings
FIG. 1 is a schematic diagram of a front view of an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of an embodiment of the present utility model;
FIG. 3 is a schematic view of the structure of the fixing part of the reflecting surface and the main support;
FIG. 4 is a schematic view showing the structure of the fixing part of the support rod and the reflecting surface;
FIG. 5 is an exploded view of the utility model at the junction of the lead screw and the slider;
fig. 6 is a schematic view of the installation and fixation of the screw nut seat of the present utility model.
In the figure: 1. the device comprises a base, 1-1, a bracket mounting groove, 2, a main bracket, 2-1, a cross-shaped connecting frame, 3, a reflecting surface, 4, a supporting rod, 5, a wave collector, 6, a supporting rod fixing bolt, 7, a reflecting surface and main bracket fixing bolt, 8, a sliding groove, 9, a sliding block, 10, a sliding block and screw rod connecting bolt, 11, a connecting body, 12, a main bracket and base connecting bolt, 13, a stop block, 14, a positioning block, 15, a screw rod, 16, a screw rod nut seat, 17, a positioning bolt, 18, a screw rod positioning hole, 19, a screw rod nut seat pre-buried pin, 20, a screw rod nut seat pre-buried groove, 21, a rotating handle, 22, a fixing bolt hole, 23, a main bracket and base fixing bolt hole, 24 and a reflecting surface pre-buried nut.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
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", "top", "bottom", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the referred devices or elements 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, and terms such as "mounted", "connected" should be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The embodiment of the satellite antenna with the adjustable angle made of the carbon fiber composite material comprises a base 1, a main support 2, a lead screw 15, a reflecting surface 3, a support rod 4 and a wave collector 5, wherein the lower end of the main support 2 is rotationally connected with one end of the base 1, the reflecting surface 3 is arranged on the upper side of the front end of the main support 2, a sliding groove 8 is arranged on the back of the main support 2, preferably, the sliding groove 8 can be integrated with the main support 2 in a pre-buried mode, one end of the lead screw 15 is slidably connected with the sliding groove 8 through a sliding block 9, a lead screw nut seat 16 is arranged at the upper end of the base 1, threads are arranged on the other side of the lead screw 15 and penetrate through the lead screw nut seat 16, the wave collector 5 is arranged at the front end of the reflecting surface 3, and the wave collector 5 is connected with the reflecting surface 3 through the support rod 4.
The upper end of the base 1 is provided with a bracket mounting groove 1-1, the lower end of the main bracket 2 is provided with a main bracket and base fixing bolt hole 23, the main bracket 2 is connected with the mounting groove 1-1 through a main bracket and base connecting bolt 12 and a self-locking nut, and the self-locking nut is arranged, so that in the connecting process of the base 1 and the main bracket 2, only the connection can be realized, the pretightening force can not be generated at the connecting position of the base 1 and the main bracket 2, and the damage to the base 1 and the main bracket 2 is prevented.
As shown in fig. 3, the upper end of the main bracket 2 is provided with a cross-shaped connecting frame 2-1, the reflecting surface 3 is provided with a reflecting surface embedded nut 24, a through hole is arranged at the position corresponding to the cross-shaped connecting frame 2-1 and the reflecting surface embedded nut 24, the reflecting surface and the main bracket fixing bolt 7 penetrate through the through hole of the cross-shaped connecting frame 2-1 and are screwed down with the reflecting surface embedded nut 24, the reflecting surface 3 is fixed on the cross-shaped connecting frame 2-1, and the reflecting surface and the main bracket fixing bolt 7 are then screwed down in a mode of arranging the reflecting surface embedded nut 24, so that damage to the cross-shaped connecting frame 2-1 and the reflecting surface 3 caused by the reflecting surface and the main bracket fixing bolt 7 can be reduced. When the reflecting surface 3 is connected with the main support 2, the reflecting surface is coated with the adhesive at the contact part of the main support 2 and the reflecting surface 3, then the reflecting surface and the main support fixing bolt 7 are screwed and connected with the reflecting surface embedded nut 24 through the through hole on the cross-shaped connecting frame 2-1, and the reflecting surface 3 is connected with the main support 2 more firmly through the double guarantee of the bolt and the nut and the adhesive.
As shown in fig. 5, a positioning block 14 is sleeved on the radial outer side of one end of a screw rod 15, a stop block 13 is sleeved on the radial outer side of the positioning block 14, the stop block 13 is connected with the sliding block 9 through a connecting body 11, and a rotating handle 21 is arranged on the other end of the screw rod 15. The positioning block 14 and the stop block 13 are arranged, and the vertical sliding of the sliding block 9 in the sliding groove 8 can be controlled by rotating the rotating handle 21, so that the pitch angle of the satellite antenna can be adjusted. The positioning block 14 is welded with the screw rod 15, the stop block 13 is welded with the connecting body 11, and the connecting body 11 is connected with the sliding block 9 through bolts. When the screw rod 15 is fixed, one end of the screw rod 15 passes through the screw rod nut seat 16, then the positioning block 14 is welded at the other end of the screw rod 15, the stop block 13 is sleeved into the screw rod 15 and sleeved on the radial outer side of the positioning block 14, the sleeved direction is that the small end of the stop block 13 is consistent with the direction of the positioning block 14, the stop block 13 is sleeved into the connecting body 11, and finally the stop block 13 is welded with the connecting body 11. The slider 9 and the connecting body 11 are connected with a screw connecting bolt 10 through the slider.
The screw nut seat 16 is provided with a screw positioning hole 18 and a positioning bolt 17, the positioning bolt 17 passes through the screw positioning hole 18 and is abutted on the screw 15, the positioning bolt 17 is used for fixing the position of the screw 15, when the pitch angle of the satellite antenna is regulated, the screw 15 is driven to rotate by rotating the rotating handle 21, and the screw 15 drives the sliding block 9 to move up and down in the sliding groove 8 under the action of the positioning block 14, the stop block 13 and the connecting body 11, so that the pitch angle of the satellite antenna is regulated, after the satellite antenna angle is regulated, the positioning bolt 17 is screwed down, the positioning bolt 17 is abutted on the screw, the satellite antenna angle is fixed, and when the satellite antenna pitch angle is regulated, the satellite antenna angle can be regulated manually only by loosening one positioning bolt 17, and the satellite antenna installation regulation efficiency can be effectively improved. As shown in fig. 6, the screw nut seat 16 is further provided with a screw nut seat pre-embedding pin 19, the base 1 is provided with a screw nut seat pre-embedding groove 20 matched with the screw nut seat pre-embedding pin 19, the base 1 and the screw nut seat 16 are fixed by arranging the pre-embedding groove, when the screw nut seat 16 is installed, the screw nut seat 16 can be fixed by only inserting the screw nut seat pre-embedding pin 19 of the screw nut seat 16 into the screw nut seat pre-embedding groove 20, and the fixing method is simple and quick and does not damage parts.
As shown in fig. 4, after the supporting rod 4 is adhered to the reflecting surface 3 by an adhesive, the supporting rod is fixed by a supporting rod fixing bolt 6, so that the supporting rod 4 is connected with the reflecting surface 3 more firmly, nuts are embedded in the reflecting surface 3, in the assembling process, the connecting surface of the supporting rod 4 and the reflecting surface 3 is coated with the adhesive firstly, then the supporting rod fixing bolt 6 is used for fixing, the damage of the common bolt and nut structure to the supporting rod 4 and the reflecting surface 3 can be avoided by embedding the nuts, and the supporting rod 4 and the reflecting surface 3 can be connected more firmly by coating the adhesive on the connecting surface.
The base 1 is provided with fixing bolt holes 22 for fixing the base 1 in an installation position by the bolt fixing bolt holes 22. The base 1, the main support 2, the reflecting surface 3, the supporting rod 4 and the rotating handle 21 are all made of carbon fiber composite materials, other parts except the wave collector 5 are made of metal materials, and the carbon fiber composite materials have the characteristics of high mechanical strength, high temperature resistance, low thermal conductivity, low water absorption, good chemical resistance, static resistance, good dimensional stability, easiness in processing and the like, have excellent physical characteristics, are very suitable for being used in outdoor severe environments, and can greatly reduce the overall weight of the satellite antenna, improve the overall structural strength and increase the overall corrosion resistance of the satellite antenna by applying the carbon fiber composite materials to structural parts of the satellite antenna.
The embodiments of the utility model 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 embodiments were 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 (10)
1. The utility model provides a carbon fiber composite material angularly adjustable satellite antenna, its characterized in that, including base (1), main support (2), lead screw (15), reflecting surface (3), bracing piece (4) and wave collector (5), the lower extreme of main support (2) with the one end of base (1) rotates and is connected, reflecting surface (3) set up in the upside of main support (2) front end, main support (2) back is equipped with spout (8), lead screw (15) one end with through slider (9) with spout (8) sliding connection, base (1) upper end is equipped with lead screw nut seat (16), lead screw (15) opposite side be equipped with the screw thread and pass lead screw nut seat (16), wave collector (5) set up in the front end of reflecting surface (3), wave collector (5) are passed through bracing piece (4) with reflecting surface (3) are connected.
2. The satellite antenna with the adjustable angle made of the carbon fiber composite material according to claim 1, wherein a bracket mounting groove (1-1) is formed in the upper end of the base (1), and the lower end of the main bracket (2) is connected with the mounting groove (1-1) through a main bracket base connecting bolt (12) and a self-locking nut.
3. The satellite antenna with the adjustable angle made of the carbon fiber composite material according to claim 1, wherein a cross-shaped connecting frame (2-1) is arranged at the upper end of the main support (2), a reflecting surface embedded nut (24) is arranged on the reflecting surface (3), a through hole is formed in a position, corresponding to the reflecting surface embedded nut (24), of the cross-shaped connecting frame (2-1), a bolt penetrates through the through hole of the cross-shaped connecting frame (2-1) and is screwed with the reflecting surface embedded nut (24), and the reflecting surface (3) is fixed on the cross-shaped connecting frame (2-1).
4. An angularly adjustable satellite antenna made of carbon fibre composite material according to claim 1, characterized in that said reflecting surface (3) is fixed to said main support (2) by means of bolts after being glued by means of an adhesive.
5. The satellite antenna with the adjustable angle made of the carbon fiber composite material according to claim 1, wherein a positioning block (14) is sleeved on the radial outer side of one end of the lead screw (15), a stop block (13) is sleeved on the radial outer side of the positioning block (14), the stop block (13) is connected with the sliding block (9) through a connecting body (11), and a rotating handle (21) is arranged on the other end of the lead screw (15).
6. The satellite antenna with the adjustable angle made of the carbon fiber composite material according to claim 5, wherein the positioning block (14) is welded with the screw rod (15), the stop block (13) is welded with the connecting body (11), and the connecting body (11) is connected with the sliding block (9) through bolts.
7. The satellite antenna with the adjustable angle made of the carbon fiber composite material according to claim 5, wherein the base (1), the main support (2), the reflecting surface (3), the supporting rod (4) and the rotating handle (21) are all made of the carbon fiber composite material.
8. The satellite antenna with the adjustable angle made of the carbon fiber composite material according to claim 1, wherein the screw nut seat (16) is provided with a screw positioning hole (18) and a positioning bolt (17), the positioning bolt (17) passes through the screw positioning hole (18) to be abutted on the screw (15), the positioning bolt (17) is used for fixing the position of the screw (15), the screw nut seat (16) is further provided with a screw nut seat embedded pin (19), and the base (1) is provided with a screw nut seat embedded groove (20) matched with the screw nut seat embedded pin (19).
9. The angle-adjustable satellite antenna made of the carbon fiber composite material according to claim 1, wherein the supporting rod (4) and the reflecting surface (3) are fixed through bolts after being bonded through an adhesive.
10. An angularly adjustable satellite antenna according to claim 1, characterized in that the base (1) is provided with fixing bolt holes (22) for bolting the fixing bolt holes (22) to fix the base (1) in a mounted position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320107658.7U CN219371349U (en) | 2023-02-03 | 2023-02-03 | Carbon fiber composite material angle-adjustable satellite antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320107658.7U CN219371349U (en) | 2023-02-03 | 2023-02-03 | Carbon fiber composite material angle-adjustable satellite antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219371349U true CN219371349U (en) | 2023-07-18 |
Family
ID=87150819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320107658.7U Active CN219371349U (en) | 2023-02-03 | 2023-02-03 | Carbon fiber composite material angle-adjustable satellite antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219371349U (en) |
-
2023
- 2023-02-03 CN CN202320107658.7U patent/CN219371349U/en active Active
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