CN219639973U - Spherical curtain frame cambered surface lofting positioner - Google Patents
Spherical curtain frame cambered surface lofting positioner Download PDFInfo
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- CN219639973U CN219639973U CN202320060604.XU CN202320060604U CN219639973U CN 219639973 U CN219639973 U CN 219639973U CN 202320060604 U CN202320060604 U CN 202320060604U CN 219639973 U CN219639973 U CN 219639973U
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- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000010030 laminating Methods 0.000 abstract 2
- 230000000007 visual effect Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model provides a cambered surface lofting and positioning device of a spherical screen frame, which comprises a base, a support column, a rotating arm, a connecting piece, a first positioning plate and a second positioning plate, wherein the support column is rotatably arranged on the base; wherein, first locating plate sets up first arc portion, and first arc portion is used for laminating the vertical radian structure of ball curtain frame, and the second locating plate sets up second arc portion, and second arc portion is used for laminating the horizontal radian structure of ball curtain frame. The device can replace the original installation method, the installation of the spherical screen frame is more efficient without manual measurement and human eye observation for many times, and the spherical screen frame is smooth after the installation, so that the effect is good, the projection effect of the screen is ensured, and better watching experience is brought to tourists.
Description
Technical Field
The utility model relates to the technical field of spherical screen frames, in particular to a cambered surface lofting and positioning device of a spherical screen frame.
Background
With the development of society and the progress of science, the spherical screen film appears in people's life, and the spherical screen film shows the high resolution, and the display effect of three hundred sixty degrees visual angle scope can bring novel visual effect for spectators, lets spectators feel strong visual shock and feel personally on the scene.
At present, in the movie viewing project of the amusement park, a spherical screen movie is often required to be played, however, when a spherical screen frame of the spherical screen movie is installed, the installation difficulty is large because of the complex structure and large size of the spherical screen frame, and particularly when a tank opening cambered surface of the spherical screen frame is installed, the arc of the tank opening cambered surface of the spherical screen frame can be basically ensured only by the cooperation of eyes of a worker and manual measurement. However, in the above-mentioned process, the working efficiency of the installation method of the manual measurement is too low by the eyes of the worker, resulting in a delay in the construction period, and thus, improvement of the prior art is required.
Disclosure of Invention
The utility model provides a spherical screen frame cambered surface lofting positioning device, which solves the problem that the working efficiency of the existing spherical screen frame tank mouth cambered surface installation method is too low.
The utility model is realized by the following technical scheme:
a kind of ball curtain frame cambered surface lofting locating device, including:
a base;
the support column is rotatably arranged on the base;
the rotating arm is detachably arranged on the support column;
the connecting piece is detachably arranged on the rotating arm;
the first positioning plate is detachably arranged on the connecting piece; and
the second positioning plate is vertically arranged on the first positioning plate and is detachably connected with the first positioning plate;
the first positioning plate is provided with a first arc-shaped part, and the first arc-shaped part is used for being attached to a vertical radian structure of a vertical steel frame of the spherical curtain frame;
the second locating plate is provided with a second arc-shaped part, and the second arc-shaped part is used for being attached to a transverse radian structure of a transverse steel frame of the spherical curtain frame.
The further technical scheme is that the second locating plate is provided with a plurality of locating pieces, the locating pieces are provided with locating grooves, and the locating grooves are used for being clamped with the vertical radian structure of the spherical curtain frame.
The further technical scheme is that the device further comprises an inclined pull rod, one end of the inclined pull rod is fixedly connected with the rotating arm, and the other end of the inclined pull rod is fixedly connected with the connecting piece.
The further technical scheme is that the support column is provided with a first positioning cylinder, the first positioning cylinder is fixedly connected with the support column through a first positioning bolt, a first hanging lug is arranged on the first positioning cylinder, a second hanging lug is arranged on the connecting piece, and the first hanging lug and the second hanging lug are respectively fixedly connected with two ends of the diagonal draw bar.
The further technical scheme is that the rotating arm is provided with a second positioning cylinder, the second positioning cylinder is fixedly connected with the supporting column through a second positioning bolt, and the second positioning cylinder is fixedly connected with the rotating arm.
According to the technical scheme, the rotary arm and the diagonal draw bar are respectively provided with a plurality of rotary arms, the end parts of the rotary arms adjacent to each other are respectively provided with a first disc, the two rotary arms are fixedly connected with each other through a first fixing bolt, the end parts of the diagonal draw bar adjacent to each other are respectively provided with a second disc, and the two rotary arms are fixedly connected with each other through a second fixing bolt.
The further technical scheme is that the two sides of the base are respectively provided with a fastening plate, and the fastening plates are provided with a plurality of fastening screw holes.
The further technical scheme is that a first sleeve is arranged on the base, a bearing is arranged on the first sleeve, and the bearing is rotationally connected with the rotating arm.
The further technical scheme is that the connecting piece is provided with an open slot and a connecting slot, the open slot is fixedly connected with the first positioning plate through an open bolt, and the connecting slot is fixedly connected with the rotating arm through a connecting bolt.
According to a further technical scheme, flat portions are respectively arranged on two sides of the connecting piece located in the open groove, and the open bolts are installed on the flat portions.
The utility model has the beneficial effects that:
when the device is used, firstly, the base of the device is mounted to the central position of the tank opening of the spherical curtain frame, then the rotating arm is mounted, then the first positioning plate and the second positioning plate are used for positioning the arc of the arc surface of the tank opening of the spherical curtain frame, the first arc-shaped part of the first positioning plate is attached to the vertical arc structure of the arc surface of the tank opening of the spherical curtain frame, the second arc-shaped part of the second positioning plate is attached to the transverse arc structure of the arc surface of the tank opening of the spherical curtain frame, and finally, the chord length of the adjacent warp sheet body and the chord length of the adjacent weft sheet body are determined through the rotating support columns. The device can replace the original installation method after being used, does not need to be manually measured and observed by eyes for many times, is more efficient in installing the spherical screen frame, and improves the working efficiency.
Drawings
FIG. 1 is a schematic overall structure of embodiment 1 of the present utility model;
FIG. 2 is an enlarged view at A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is a schematic overall structure of embodiment 2 of the present utility model;
FIG. 5 is an enlarged view at C of FIG. 4;
FIG. 6 is an enlarged view of FIG. 4 at D;
FIG. 7 is a schematic overall structure of embodiment 3 of the present utility model;
FIG. 8 is an enlarged view at E of FIG. 7;
fig. 9 is an enlarged view of fig. 7 at F;
FIG. 10 is a state diagram of the use of the present utility model;
fig. 11 is a view of another view of the present utility model.
Reference numerals illustrate:
1. a base; 101. fastening the screw hole; 102. a fastening plate; 103. a first sleeve; 2. a support column; 3. a second positioning plate; 301. a positioning piece; 302. a positioning groove; 303. a second arc-shaped portion; 4. a first positioning plate; 401. a first arc-shaped portion; 5. a connecting piece; 501. a flattening part; 502. an opening bolt; 503. an open slot; 504. a second hanger; 505. a connecting groove; 505. a connecting bolt; 6. a rotating arm; 601. a first fixing bolt; 602. a first disc; 7. a second positioning cylinder; 701. a second positioning bolt; 8. a diagonal draw bar; 801. a second fixing bolt; 802. a second disc; 9. a first positioning cylinder; 901. a first positioning bolt; 902. a first hanger; 10. a ball curtain frame; 11. a vertical radian structure; 12. a transverse radian structure.
Detailed Description
The present utility model will be described in further detail below in order to make the objects, technical solutions and effects of the present utility model more clear and distinct. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
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; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. 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 present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
At present, when the ball curtain frame 10 is installed in a recreation ground, because the ball curtain frame 10 is complex in structure and large in size, the installation difficulty is large, and particularly when the tank opening cambered surface of the ball curtain frame 10 is installed, the tank opening cambered surface radian of the ball curtain frame 10 can be basically ensured only by the fact that the eyes of a worker are required to observe and cooperate with manual measurement, and the installation mode is low in efficiency.
The present utility model thus provides an improvement to the above problems, which is as follows:
example 1
The utility model provides a spherical screen frame 10 cambered surface positioner, includes base 1, support column 2, swinging boom 6, connecting piece 5, first locating plate 4 and second locating plate 3, the rotatable setting of support column 2 in base 1, swinging boom 6 detachable set up in support column 2, connecting piece 5 detachable set up in swinging boom 6, first locating plate 4 detachable set up in connecting piece 5, second locating plate 3 set up perpendicularly in first locating plate 4, and with first locating plate 4 detachable connection; the first positioning plate 4 is provided with a first arc-shaped portion 401, the first arc-shaped portion 401 is used for being attached to a vertical arc-shaped structure of a vertical steel frame of the spherical screen frame 10, the second positioning plate 3 is provided with a second arc-shaped portion 303, and the second arc-shaped portion 303 is used for being attached to a horizontal arc-shaped structure of a horizontal steel frame of the spherical screen frame 10.
In the above process, referring to fig. 1, since the base 1 is used for supporting the first positioning plate 4 and the second positioning plate 3 to rotate, in order to make the base 1 stable, the base 1 should be fixed firmly during installation, and it should be noted that the base 1 may have a certain weight during design, so as to avoid unbalanced weight of the base 1 due to the arrangement of the first positioning plate 4 and the positioning plate; the support column 2 is used for rotating the first positioning plate 4 and the second positioning plate 3, so that an area enclosed by the rotated support column 2 is used for measuring the arc of the tank mouth arc surface of the spherical screen frame 10; the rotating arm 6 is used for enabling the base 1 to be connected with the first positioning plate 4 and the second positioning plate 3, and the rotating arm 6 can be properly selected according to practical design, so that the arc of the tank mouth arc surface of the spherical curtain frame 10 with different heights can be matched.
In practical use, as shown in fig. 10 and 11, firstly, install the base 1 of the device to the tank mouth central position of the spherical screen frame 10, then select suitable rotation arm 6 size installation, then fix the tank mouth cambered surface radian of the spherical screen frame 10 with first locating plate 4 and second locating plate 3 respectively, make the first arc portion 401 of first locating plate 4 laminate the vertical radian structure 11 of the tank mouth cambered surface of the spherical screen frame 10, the second arc portion 303 of second locating plate 3 laminate the horizontal radian structure 12 of the tank mouth cambered surface of the spherical screen frame 10, finally through rotatory support column 2, thereby confirm adjacent warp lamellar body chord length and adjacent weft lamellar body chord length, make the device replace original installation method, need not to observe at many times manual measurement and people's eyes, the installation of spherical screen frame 10 is more efficient, and the warp structure and weft structure are smooth and smooth after the installation of spherical screen frame 10 is accomplished, warp structure and weft structure installation cambered size is accurate, the whole is unanimous, the cambered surface is good, the effect is good, smooth working face is provided for the subsequent screen aluminum plate, the projection screen is guaranteed, the projection effect is brought about the amusement screen is better, and the overall screen effect is better, the amusement screen effect is played. In addition, the vertical arc structure 11 represents the weft structure of the spherical screen frame 10, and the horizontal arc structure 12 represents the warp structure of the spherical screen frame 10.
In one embodiment, the second positioning plate 3 is provided with a plurality of positioning members 301, the positioning members 301 are provided with positioning grooves 302, and the positioning grooves 302 are used for clamping the vertical arc structure 11 of the spherical screen frame 10. In the present utility model, referring to fig. 1 and 11, the number of the positioning pieces 301 is three, and the corresponding positioning grooves 302 are provided in three, are respectively installed to the left, middle and right ends of the second positioning plate 3, and are uniformly distributed. When in actual use, the constant head tank 302 joint of this device is on the vertical radian structure 11 of three ball curtain frame 10, on the steelframe of vertical connection promptly for distance evenly distributed between the adjacent three vertical radian structure 11, evenly distributed between the vertical radian structure 11 that makes this device formation, further promotion this device's result of use.
In one embodiment, as shown in fig. 1, fastening plates 102 are respectively disposed on two sides of the base 1, and a plurality of fastening screw holes 101 are disposed on the fastening plates 102. In the application, through setting up the fastening plate 102 at base 1, cooperation fastening screw 101, when using, pass fastening screw 101 through ordinary bolt and make base 1 fixed to make base 1 install more firm.
In one embodiment, as shown in fig. 1, a first sleeve 103 is disposed on the base 1, and the first sleeve 103 is provided with a bearing, and the bearing is rotatably connected with the rotating arm 6. In the present utility model, the support column 2 is supported for rotation by using a general bearing, and friction force when the support column 2 is rotated can also be reduced.
In one embodiment, referring to fig. 2 and 5, the connector 5 is provided with an opening slot 503 and a connecting slot 505, the opening slot 503 is fixedly connected with the first positioning plate 4 through an opening bolt 502, and the connecting slot 505 is fixedly connected with the rotating arm 6 through the connecting bolt 505. In the utility model, through the arrangement of the open slot 503, the first positioning plate 4 can be clamped at the open slot 503 by matching with the open bolt 502, so that the first positioning plate 4 can be vertically arranged, and the first arc-shaped part 401 can be matched with the radian of a vertical steel frame.
In one embodiment, as shown in fig. 2, flat portions 501 are respectively provided on both sides of the connection member 5 in the open groove 503, and the open bolt 502 is mounted on the flat portions 501. In the utility model, since the connecting piece 5 is in a tool cylinder shape, the opening groove 503 is cut into a flat part 501, so that the opening bolt 502 is convenient to install, and the first positioning plate 4 is firmly fixed.
Example 2
The difference between this embodiment 2 and embodiment 1 is that, referring to fig. 4, a diagonal brace 8 is further included, one end of the diagonal brace 8 is fixedly connected with the rotating arm 6, and the other end of the diagonal brace 8 is fixedly connected with the connecting member 5. In the utility model, as shown in fig. 4 to 6, by arranging the diagonal draw bars 8, the support columns 2 are prevented from being bent due to the fact that one ends of the first positioning plates 4 and the second positioning plates 3 are excessively heavy, and the reliability of the support columns 2 is improved; for example, when the support columns 2 are made of plastic, bending may occur. In addition, the diagonal draw bar 8 can be replaced by a steel wire rope, so that the connection effect of the steel wire rope is not poorer than that of the steel wire rope which is not used.
Further, referring to fig. 5 and 6, the support column 2 is provided with a first positioning cylinder 9, the first positioning cylinder 9 is fixedly connected with the support column 2 through a first positioning bolt 901, a first hanging lug 902 is arranged on the first positioning cylinder 9, a second hanging lug 504 is arranged on the connecting piece 5, and the first hanging lug 902 and the second hanging lug 504 are respectively fixedly connected with two ends of the diagonal draw bar 8. In the present utility model, the diagonal draw bar 8 is easily detached and fixed by providing the first hanging tab 902 and the second hanging tab 504.
In one embodiment, as shown in fig. 3, the rotating arm 6 is provided with a second positioning cylinder 7, the second positioning cylinder 7 is fixedly connected with the support column 2 through a second positioning bolt 701, and the second positioning cylinder 7 is fixedly connected with the rotating arm 6. In the present utility model, one end of the rotating arm 6 is fixed to the support column 2 by the second positioning cylinder 7 and the second positioning bolt 701 provided.
Example 3
The difference between this embodiment 3 and embodiments 1 and 2 is that, as shown in fig. 7 to 9, the rotating arm 6 and the diagonal draw bar 8 are respectively provided with a plurality of rotating arms 6, the adjacent end portions of the rotating arm 6 are respectively provided with a first disc 602, the two first discs 602 are fixedly connected by a first fixing bolt 601, the adjacent end portions of the diagonal draw bar 8 are respectively provided with a second disc 802, and the two second discs 802 are fixedly connected by a second disc 802 bolt. In the application, when swinging boom 6 and diagonal draw bar 8 set up to a plurality of, this device can match the jar mouth cambered surface radian of the ball curtain frame 10 of not co-altitude position, further promotes the result of use of this device.
In summary, according to the present utility model, the arc structure of the tank mouth arc surface of the spherical screen frame 10 is positioned by the first positioning plate 4 and the second positioning plate 3, so that the first arc portion 401 of the first positioning plate 4 is attached to the vertical arc structure 11 of the tank mouth arc surface of the spherical screen frame 10, the second arc portion 303 of the second positioning plate 3 is attached to the transverse arc structure 12 of the tank mouth arc surface of the spherical screen frame 10, and finally, the chord length of the adjacent warp sheet body and the chord length of the adjacent weft sheet body are determined by rotating the support column 2. The device can replace the original installation method after being used, and the installation of the spherical screen frame 10 is more efficient without manual measurement and observation by eyes for many times, so that the working efficiency is improved; and warp structure and weft structure are level and smooth after ball curtain frame 10 installs and accomplish, warp structure and weft structure installation arc size are accurate, and the cambered surface is whole unanimous, and is respond well, for lay screen aluminum plate in succession and provide level and smooth working face, guaranteed the projection effect of screen, brought better sight shadow to experience for the visitor, promoted the whole effect of ball curtain amusement project.
Of course, the present utility model can be implemented in various other embodiments, and based on this embodiment, those skilled in the art can obtain other embodiments without any inventive effort, which fall within the scope of the present utility model.
Claims (10)
1. Ball curtain frame cambered surface lofting positioner, its characterized in that includes:
a base;
the support column is rotatably arranged on the base;
the rotating arm is detachably arranged on the support column;
the connecting piece is detachably arranged on the rotating arm;
the first positioning plate is detachably arranged on the connecting piece; and
the second positioning plate is vertically arranged on the first positioning plate and is detachably connected with the first positioning plate;
the first positioning plate is provided with a first arc-shaped part, and the first arc-shaped part is used for being attached to a vertical radian structure of a vertical steel frame of the spherical curtain frame;
the second locating plate is provided with a second arc-shaped part, and the second arc-shaped part is used for being attached to a transverse radian structure of a transverse steel frame of the spherical curtain frame.
2. The cambered surface lofting and positioning device for the spherical curtain frame according to claim 1, wherein a plurality of positioning pieces are arranged on the second positioning plate, positioning grooves are formed in the positioning pieces, and the positioning grooves are used for being clamped with a vertical radian structure of the spherical curtain frame.
3. The device for lofting and positioning the cambered surface of the spherical screen frame according to claim 2, further comprising a diagonal draw bar, wherein one end of the diagonal draw bar is fixedly connected with the rotating arm, and the other end of the diagonal draw bar is fixedly connected with the connecting piece.
4. The cambered surface lofting and positioning device for the spherical screen frame according to claim 3, wherein the supporting column is provided with a first positioning cylinder, the first positioning cylinder is fixedly connected with the supporting column through a first positioning bolt, the first positioning cylinder is provided with a first hanging lug, the connecting piece is provided with a second hanging lug, and the first hanging lug and the second hanging lug are respectively fixedly connected with two ends of the diagonal draw bar.
5. The device for lofting and positioning a spherical screen frame cambered surface according to claim 4, wherein the rotating arm is provided with a second positioning cylinder, the second positioning cylinder is fixedly connected with the supporting column through a second positioning bolt, and the second positioning cylinder is fixedly connected with the rotating arm.
6. The cambered surface lofting and positioning device for the spherical screen frame according to claim 5, wherein the rotating arm and the diagonal draw bar are respectively provided with a plurality of rotating arm ends, adjacent rotating arm ends are respectively provided with first discs, two of the rotating arm ends are fixedly connected through first fixing bolts, adjacent diagonal draw bar ends are respectively provided with second discs, and two of the rotating arm ends are fixedly connected through second fixing bolts.
7. The cambered surface lofting and positioning device for the spherical screen frame according to claim 1, wherein fastening plates are respectively arranged on two sides of the base, and a plurality of fastening screw holes are formed in the fastening plates.
8. The device for lofting and positioning a spherical screen frame cambered surface according to claim 1, wherein a first sleeve is arranged on the base, the first sleeve is provided with a bearing, and the bearing is rotatably connected with the rotating arm.
9. The device according to any one of claims 1 to 8, wherein the connector is provided with an open slot and a connecting slot, the open slot is fixedly connected with the first positioning plate by an open bolt, and the connecting slot is fixedly connected with the rotating arm by a connecting bolt.
10. The device for lofting and positioning a spherical screen frame cambered surface according to claim 9, wherein flat parts are respectively arranged on two sides of the connecting piece positioned in the open slot, and the open bolts are mounted on the flat parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320060604.XU CN219639973U (en) | 2023-01-09 | 2023-01-09 | Spherical curtain frame cambered surface lofting positioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320060604.XU CN219639973U (en) | 2023-01-09 | 2023-01-09 | Spherical curtain frame cambered surface lofting positioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219639973U true CN219639973U (en) | 2023-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320060604.XU Active CN219639973U (en) | 2023-01-09 | 2023-01-09 | Spherical curtain frame cambered surface lofting positioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219639973U (en) |
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2023
- 2023-01-09 CN CN202320060604.XU patent/CN219639973U/en active Active
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