CN214230789U - Projection cup - Google Patents
Projection cup Download PDFInfo
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- CN214230789U CN214230789U CN202023219321.0U CN202023219321U CN214230789U CN 214230789 U CN214230789 U CN 214230789U CN 202023219321 U CN202023219321 U CN 202023219321U CN 214230789 U CN214230789 U CN 214230789U
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Abstract
The utility model provides a projection cup, wherein the bottom, the outer wall and the inner wall are all made of crystal glass, the bottom is parallel to the rim and is arranged at the same central line, and the radian of the bottom is zero; the outer-layer cup wall is formed by connecting a plurality of arc-shaped panels which protrude outwards in an encircling manner, each arc-shaped panel is obliquely connected with the cup opening and the cup bottom from the cup opening to the cup bottom in a direction close to the central line, and the included angle between each arc-shaped panel and the horizontal plane is 45-135 degrees; the cup bottom and the plurality of arc-shaped panels form a first cavity; the inner-layer cup wall comprises a cup wall plane plate, the cup wall plane plate is located in the first cavity, the cup wall plane plate inclines towards the direction close to the central line from the cup opening to the cup bottom, the cup wall plane plate is integrally connected with the arc-shaped panel through a connecting piece of crystal glass, the included angle between the cup wall plane plate and the horizontal plane is 20-70 degrees, and the imaging light source is located at the outer bottom end of the cup bottom. The utility model provides a projection cup can be with inside the three-dimensional picture projection cup, bring the romantic visual experience of people, improve the temperament and interest of having a dinner.
Description
Technical Field
The utility model relates to a cup utensil technical field, more specifically the utility model relates to a projection cup that says so.
Background
With the development of science and technology and the improvement of living standard, people cannot satisfy the problem of thirst by filling the stomach with food and drinking water, liquor or beverage, but pursue the feeling of food and drinking water, liquor or beverage, and the requirements on living quality and living taste are improved.
However, at present, water, wine or beverage are contained in a common cup, so that the problem that how people drink water, wine or beverage through a container can be solved, but the taste of people cannot be brought, and the requirement of people on the living taste cannot be met.
Therefore, how to provide a cup with projection function is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a projection cup can be with inside the three-dimensional picture projection cup, bring the romantic visual experience of people, improve the interest of having a dinner.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a projection cup, comprising:
a cup mouth;
the glass cup comprises a cup bottom made of crystal glass, wherein the cup bottom is parallel to the cup opening and is arranged on the same central line, and the radian of the cup bottom is zero;
the crystal glass outer-layer cup wall is formed by connecting a plurality of arc-shaped panels protruding outwards in an encircling manner, each arc-shaped panel is obliquely connected with the cup opening and the cup bottom from the cup opening to the cup bottom in a direction close to the central line, and an included angle a between each arc-shaped panel and the horizontal plane is 45-135 degrees; the cup bottom and the arc-shaped panels form a first cavity;
the inner-layer cup wall of the crystal glass comprises a cup wall plane plate, the cup wall plane plate is located in the first cavity, the cup wall plane plate inclines towards the direction close to the central line from the cup opening to the cup bottom and is integrally connected with the arc-shaped panel through a crystal glass connecting piece, meanwhile, the included angle b between the cup wall plane plate and the horizontal plane is 20-70 degrees, and the distance H between one end of the cup wall plane plate close to the cup bottom and the horizontal plane is 0-100 mm;
an imaging light source located at an outer bottom end of the cup bottom.
The utility model discloses place the imaging light source on the horizontal plane and be located the cup bottom, then because the utility model discloses a cup bottom is not the cambered surface, then the light of imaging light source can get into first cavity perpendicularly through crystal glass's cup bottom to spread to the cup wall plane board through crystal glass between cup wall plane board and the arc panel, then imaging light source projection to the cup wall plane board on, the light path reflects to the arc panel and refracts to eyes through the arc panel through the cup wall plane board simultaneously, then can see the projection image that forms in the cup, so that can bring romantic vision experience for people, improve the enjoyment of having a dinner.
Preferably, the outer-layer cup wall is formed by connecting 3-8 outwards-protruding arc-shaped panels in an encircling mode.
Preferably, a chamfer is cut at the joint of every two adjacent arc-shaped panels from the cup bottom to the cup opening.
The utility model discloses a there is the chamfer in the cutting on two cambered plates to the user grips the utility model discloses a projection cup.
Preferably, the cup wall plane plates are multiple and are located in the first cavity, the cup wall plane plates are all inclined from the cup opening to the cup bottom in the direction close to the central line and are integrally connected with the arc-shaped panel through crystal glass, an included angle b between each cup wall plane plate and the horizontal plane ranges from 20 degrees to 70 degrees, and the distance H between one end, close to the cup bottom, of each cup wall plane plate and the horizontal plane ranges from 0mm to 100 mm.
The utility model discloses a plurality of cup wall plane boards can improve the position of formation of image to the user can all can see projected image from a plurality of different angles.
Preferably, each inner layer cup wall comprises 1-6 cup wall plane plates.
Preferably, the cup bottom is a plane, and an included angle between the cup bottom and the horizontal plane is 0 degree.
The utility model discloses a planar bottom of cup can make the light in the player directly get into first cavity and spread to form images on the wall of cup plane board through the crystal glass between wall of cup plane board and the arc panel through the bottom of cup, and imaging efficiency is higher.
Preferably, the cup bottom comprises a plurality of cup bottom plane plates which are integrally connected with one another, the cup bottom plane plates are radially distributed from one point on the central line as the center, and are inclined towards the direction close to the cup opening from the arc-shaped panel, the included angle c between the cup bottom plane plate and the horizontal plane is 0-40 degrees, and the height h between the center and the horizontal plane is 0-20 mm.
The utility model discloses a bottom of cup of a plurality of bottom of cup plane board body coupling formation "pyramid" form to make every bottom of cup plane board be 0 degree ~ 40 degrees with the contained angle c of horizontal plane, center ("pyramid" form the "tip of the tower" of bottom of cup ") is 0 ~ 20mm apart from the high h of horizontal plane, consequently the utility model discloses can adjust the position of formation of image when guaranteeing projection formation of image (light forms images on the bottom of cup of" pyramid "form refracts earlier after getting into first cavity again and propagating to the wall of cup plane board through the crystal glass between wall of cup plane board and the arc panel).
Preferably, the imaging light source is a cup mat with a static picture or a player playing a dynamic picture, the cup mat or the player is located at the outer bottom end of the cup bottom, and the static picture or the dynamic picture faces the cup bottom.
The utility model places the player (such as mobile phone etc. playing static picture or dynamic picture) on the horizontal plane and under the cup, and the front side (the side playing static picture or dynamic picture) of the player faces the bottom side of the cup, because the cup bottom of the utility model is not a cambered surface, the light on the player can vertically enter the first cavity through the bottom of the crystal glass and spread to the cup wall plane plate through the crystal glass between the cup wall plane plate and the cambered plate, the picture in the player is projected to the cup wall plane plate, and the light path is reflected to the cambered plate through the cup wall plane plate and refracted to eyes through the cambered plate, so that the static picture can be seen in the cup when playing static picture in the projection image player formed in the cup, and the dynamic picture can be seen in the cup when playing dynamic picture in the player), so that people can have romantic visual experience and the dining interest is improved.
Preferably, transparent liquid is filled in the first cavity or a transparent solid is integrally connected with the first cavity, so that the light path can be transmitted, the problem that the visual effect is influenced by directly seeing the imaging light source can be solved, and the projected image can be only seen from the cup.
Preferably, the first cavity is filled with a transparent gas; an anti-peeping film is fixed at the bottom end of the outer portion of the cup bottom, the cup mat or the player is located at the bottom end of the outer portion of the anti-peeping film, and meanwhile the static pictures or the dynamic pictures face the anti-peeping film. Therefore, the projection image can be seen only from the cup, and the problem that the visual effect is influenced by directly seeing the imaging light source at the same time is prevented.
Preferably, the refractive indexes of the cup bottom, the outer layer cup wall, the inner layer cup wall, the connecting piece and the cup bottom are 1.4-16.
The utility model discloses not only can accomplish projected effect through the principle of reflection and refraction, the cost is lower moreover to can one shot forming, preparation simple process.
Preferably, a total reflection film of crystal glass is fixed on one side of the inner-layer cup wall, which is far away from the joint with the outer-layer cup wall, and the refractive index of the total reflection film is greater than 1.6.
The utility model discloses a total reflection membrane can guarantee to pour into wine or other and drink the luminance that can not reduce the projection picture after the liquid in the cup to guarantee projection imaging's visual effect.
Preferably, the cup bottom plane plate is pentagonal, quadrangular or trilateral.
Preferably, the cup wall plane plate is pentagonal, quadrangular or triangular.
Known via foretell technical scheme, compare with prior art, the utility model discloses a projection cup can realize following technological effect:
the utility model discloses place the imaging light source on the horizontal plane and be located the cup bottom, then because the utility model discloses a cup bottom is not the cambered surface, then the light of imaging light source can get into first cavity perpendicularly through crystal glass's cup bottom to spread to the cup wall plane board through crystal glass between cup wall plane board and the arc panel, then imaging light source projection to the cup wall plane board on, the light path reflects to the arc panel and refracts to eyes through the arc panel through the cup wall plane board simultaneously, then can see the projection image that forms in the cup, so that can bring romantic vision experience for people, improve the enjoyment of having a dinner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a projection cup according to embodiment 4 of the present invention;
FIG. 2 is a schematic structural diagram of a projection cup according to embodiment 5 of the present invention;
FIG. 3 is a schematic diagram of a projection cup according to the present invention;
fig. 4 is a structural diagram of a projection cup in embodiment 4 of the present invention, in which an inner cup wall is not installed;
fig. 5 is a structural diagram of a projection cup in embodiment 5 of the present invention, in which an inner wall is not installed.
Wherein, 11-the cup mouth; 12-a cup bottom; 13-outer layer cup wall; 14-inner cup wall; 141-wall plane plate; 10-chamfering; 121 cup bottom plane plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses projection cup, include:
a cup rim 11;
the cup bottom 12 of the crystal glass is parallel to the cup opening 11 and is arranged on the same central line, and the radian of the cup bottom 12 is zero;
the outer-layer cup wall 13 of the crystal glass is formed by connecting a plurality of arc-shaped panels 131 protruding outwards in an encircling manner, each arc-shaped panel 131 is obliquely connected with the cup opening 11 and the cup bottom 12 from the cup opening 11 to the cup bottom 12 in a direction close to a central line, and an included angle a between each arc-shaped panel 131 and the horizontal plane is 45-135 degrees; the cup bottom 12 and the plurality of arcuate panels 131 form a first cavity;
the inner layer cup wall 14 of the crystal glass comprises a cup wall plane plate 141, the cup wall plane plate 141 is located in the first cavity, the cup wall plane plate 141 inclines towards the direction close to the central line from the cup opening 11 to the cup bottom 12 and is integrally connected with the arc-shaped panel 131 through a crystal glass connecting piece, meanwhile, the included angle b between the cup wall plane plate 141 and the horizontal plane is 20-70 degrees, and the distance H between one end of the cup wall plane plate 141 close to the cup bottom 12 and the horizontal plane is 0-100 mm;
and an imaging light source located at the outer bottom end of the cup bottom 12.
In order to further optimize the technical scheme, the outer-layer cup wall 13 is formed by connecting 3-8 arc-shaped panels 131 protruding outwards in an encircling mode.
In order to further optimize the technical scheme, a chamfer 10 is cut at the joint of every two adjacent arc-shaped panels 131 from the cup bottom 12 to the cup opening 11.
In order to further optimize the technical scheme, a plurality of cup wall plane plates 141 are all located in the first cavity, the plurality of cup wall plane plates 141 are all inclined from the cup opening 11 to the cup bottom 12 to the direction close to the central line and are integrally connected with the arc-shaped panel 131 through crystal glass, the included angle b between each cup wall plane plate 141 and the horizontal plane is 20-70 degrees, and the distance H between one end of each cup wall plane plate 141 close to the cup bottom 12 and the horizontal plane is 0-100 mm.
In order to further optimize the technical scheme, each inner-layer cup wall 14 comprises 1-6 cup wall plane plates 141.
In order to further optimize the technical scheme, the cup bottom 12 is a plane, and the included angle between the cup bottom 12 and the horizontal plane is 0 degree.
In order to further optimize the technical scheme, the cup bottom 12 comprises a plurality of cup bottom plane plates 121 which are integrally connected with each other, the plurality of cup bottom plane plates 121 are radially distributed from one point on a central line as a center, each cup bottom plane plate 121 inclines from the arc-shaped panel 131 to the center to the direction close to the cup opening 11, the included angle c between each cup bottom plane plate 121 and the horizontal plane is 0-40 degrees, and the height h between the center and the horizontal plane is 0-20 mm.
In order to further optimize the above technical solution, the imaging light source is a cup mat with a static picture or a player with a dynamic picture, and the cup mat or the player is located at the outer bottom end of the cup bottom 12, and the static picture or the dynamic picture faces the cup bottom 12.
In order to further optimize the technical scheme, transparent liquid is filled in the first cavity or a transparent solid is integrally connected with the first cavity.
In order to further optimize the technical scheme, transparent gas is filled in the first cavity; the peep-proof film is fixed at the bottom end of the outer part of the cup bottom 12, the cup mat or the player is positioned at the bottom end of the outer part of the peep-proof film, and the static picture or the dynamic picture faces the peep-proof film.
In order to further optimize the technical scheme, the refractive indexes of the cup bottom 12, the outer-layer cup wall 13, the inner-layer cup wall 14, the connecting piece and the cup bottom 12 are 1.4-1.6.
In order to further optimize the technical scheme, a total reflection film of crystal glass is fixed on one side of the inner cup wall 14, which is far away from the joint with the outer cup wall 13, and the refractive index of the total reflection film is larger than 1.6.
In order to further optimize the technical scheme, the cup bottom plane plate is pentagonal, quadrangular or trilateral.
In order to further optimize the above technical solution, the cup wall plane plate 141 is pentagonal, quadrangular or trilateral.
Example 1:
the embodiment of the utility model discloses a projection cup, wherein the cup bottom 12, the outer cup wall 13 and the inner cup wall 14 are all made of crystal glass; the cup bottom 12 is parallel to the cup opening 11 and is arranged at the same central line, and the radian of the cup bottom 12 is zero; the outer layer cup wall 13 is formed by connecting a plurality of arc panels 131 which protrude outwards in an encircling manner, each arc panel 131 is obliquely connected with the cup opening 11 and the cup bottom 12 from the cup opening 11 to the cup bottom 12 in a direction close to the central line, and an included angle a between each arc panel 131 and the horizontal plane is 45-135 degrees; the cup bottom 12 and the plurality of arcuate panels 131 form a first cavity; the inner layer cup wall 14 comprises a cup wall plane plate 141, the cup wall plane plate 141 is positioned in the first cavity, the cup wall plane plate 141 inclines towards the direction close to the central line from the cup opening 11 to the cup bottom 12 and is integrally connected with the arc-shaped panel 131 through a connecting piece of crystal glass, meanwhile, the included angle b between the cup wall plane plate 141 and the horizontal plane is 20-70 degrees, and the distance H between one end of the cup wall plane plate 141 close to the cup bottom 12 and the horizontal plane is 0-100 mm; the imaging light source is positioned at the outer bottom end of the cup bottom 12;
the imaging light source is a cup mat with a static picture or a player with a dynamic picture, and the cup mat or the player is located at the outer bottom end of the cup bottom 12, and the static picture or the dynamic picture faces the cup bottom 12.
The utility model places the player (such as mobile phone etc. playing static or dynamic pictures) on the horizontal plane and under the cup bottom 12, and the front (the side playing static or dynamic pictures) of the player faces the cup bottom 12, because the cup bottom 12 of the utility model is not a cambered surface, the light on the player can vertically enter the first cavity through the cup bottom 12 of the crystal glass and spread to the cup wall plane board 141 through the crystal glass between the cup wall plane board 141 and the arc panel 131, the picture in the player is projected to the cup wall plane board 141, and the light path is reflected to the arc panel 131 through the cup wall plane board 141 and refracted to eyes through the arc panel 131, the projection image formed in the cup can be seen (the static image can be seen in the cup when playing static pictures in the player, playing dynamic pictures in the player can see dynamic images in the cup) so as to bring romantic visual experience to people and improve the interest of dining.
Example 2:
on the basis of the embodiment 1, a chamfer 10 is cut at the joint of every two adjacent arc-shaped panels 131 from the cup bottom 12 to the cup opening 11.
The utility model discloses a there is chamfer 10 at two arc panel 131 on the cutting to the user grips the utility model discloses a projection cup.
Example 3:
on the basis of the embodiment 2, a plurality of cup wall plane plates 141 are all located in the first cavity, the plurality of cup wall plane plates 141 are all inclined from the cup opening 11 to the cup bottom 12 to the direction close to the central line and are integrally connected with the arc-shaped panel 131 through crystal glass, and the included angle b between each cup wall plane plate 141 and the horizontal plane is 20-70 degrees.
The utility model discloses a plurality of cup wall plane boards 141 can improve the position of formation of image to the user can all see projected image from a plurality of different angles.
Example 4:
on the basis of the embodiment 3, the cup bottom 12 is a plane, and the included angle between the cup bottom 12 and the horizontal plane is 0 degree.
The utility model discloses a planar bottom of cup 12 can make the light in the player directly get into first cavity and spread to form images on the wall of cup plane board 141 through the crystal glass between wall of cup plane board 141 and the arc panel 131 through bottom of cup 12, and imaging efficiency is higher.
Example 5:
on the basis of embodiment 3, the cup bottom 12 includes a plurality of cup bottom plane plates integrally connected with each other, and the plurality of cup bottom plane plates are all radially distributed from the center line as the center, and each cup bottom plane plate is inclined from the arc-shaped panel 131 to the center toward the direction close to the cup opening 11, and the included angle c between each cup bottom plane plate and the horizontal plane is 0-40 degrees, and the height h of the center from the horizontal plane is 0-20 mm.
The utility model discloses a bottom of cup 12 of a plurality of bottom of cup plane boards 121 body coupling formation "pyramid" form to make every bottom of cup plane board 121 be 0 degree ~ 40 degrees with the contained angle c of horizontal plane, the center ("the" tip of the tower "of pyramid" form bottom of cup ") is 0 ~ 20mm apart from the height h of horizontal plane, consequently the utility model discloses can adjust the position of formation of image when guaranteeing projection formation of image (light forms images on the bottom of cup of" pyramid "form refracts earlier and then gets into first cavity and propagates to the wall of cup plane board through the crystal glass between wall of cup plane board 141 and the arc panel 131).
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A projection cup, comprising:
a cup mouth (11);
the glass cup comprises a cup bottom (12) made of crystal glass, wherein the cup bottom (12) is parallel to the cup opening (11) and is arranged at the same center line, and the radian of the cup bottom (12) is zero;
the outer-layer cup wall (13) of the crystal glass is formed by connecting a plurality of arc-shaped panels (131) which protrude outwards in a surrounding mode, each arc-shaped panel (131) is obliquely connected with the cup opening (11) and the cup bottom (12) from the cup opening (11) to the cup bottom (12) in a direction close to the central line, and meanwhile, the included angle a between each arc-shaped panel (131) and the horizontal plane ranges from 45 degrees to 135 degrees; the cup bottom (12) and the plurality of arc-shaped panels (131) form a first cavity;
the inner-layer cup wall (14) of the crystal glass is characterized in that the inner-layer cup wall (14) comprises a cup wall plane plate (141), the cup wall plane plate (141) is located in the first cavity, the cup wall plane plate (141) inclines towards the direction close to the central line from the cup opening (11) to the cup bottom (12) and is integrally connected with the arc-shaped panel (131) through a crystal glass connecting piece, meanwhile, the included angle b between the cup wall plane plate (141) and the horizontal plane is 20-70 degrees, and the distance H between one end, close to the cup bottom (12), of the cup wall plane plate (141) and the horizontal plane is 0-100 mm;
an imaging light source located at an outer bottom end of the cup bottom (12).
2. The projection cup as claimed in claim 1, wherein a chamfer (10) is cut at the joint of every two adjacent arc-shaped panels (131) from the cup bottom (12) to the cup opening (11).
3. The projection cup as claimed in claim 2, wherein the plurality of cup wall plane plates (141) are located in the first cavity, and the plurality of cup wall plane plates (141) are inclined from the cup opening (11) to the cup bottom (12) toward the direction close to the center line and integrally connected to the arc-shaped panel (131) through crystal glass, the included angle b between each cup wall plane plate (141) and the horizontal plane is 20-70 degrees, and the distance H between one end of each cup wall plane plate (141) close to the cup bottom (12) and the horizontal plane is 0-100 mm.
4. A projection cup as claimed in claim 3, wherein the base (12) is planar and the angle between the base (12) and the horizontal is 0 degrees.
5. The projection cup as claimed in claim 3, wherein the cup bottom (12) comprises a plurality of cup bottom plane plates (121) integrally connected with each other, and the plurality of cup bottom plane plates (121) are radially distributed around a point on the center line, and each cup bottom plane plate (121) is inclined from the arc-shaped panel (131) to the center toward the cup opening (11), and the angle c between each cup bottom plane plate (121) and the horizontal plane is 0-40 degrees, and the height h of the center from the horizontal plane is 0-20 mm.
6. A projection cup as claimed in any one of claims 1 to 5, wherein the imaging light source is a coaster with a static image or a player with a dynamic image, and the coaster or player is located at the outer bottom end of the cup bottom (12) with the static image or the dynamic image facing the cup bottom (12).
7. The projection cup of claim 6, wherein the first cavity is filled with a transparent liquid or a transparent solid is integrally connected.
8. The projection cup of claim 6, wherein the first cavity is filled with a transparent gas; an anti-peeping film is fixed at the bottom end of the outer portion of the cup bottom (12), the cup mat or the player is located at the bottom end of the outer portion of the anti-peeping film, and meanwhile the static pictures or the dynamic pictures face the anti-peeping film.
9. A projection cup as claimed in claim 6, wherein the refractive index of the base (12), the outer wall (13), the inner wall (14), the connector and the base (12) is 1.4 to 1.6.
10. A projection cup as claimed in claim 9, characterized in that a total reflection film of crystal glass is fixed to the inner cup wall (14) at a side remote from the junction with the outer cup wall (13), and the refractive index of the total reflection film is greater than 1.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023219321.0U CN214230789U (en) | 2020-12-28 | 2020-12-28 | Projection cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023219321.0U CN214230789U (en) | 2020-12-28 | 2020-12-28 | Projection cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214230789U true CN214230789U (en) | 2021-09-21 |
Family
ID=77743554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023219321.0U Active CN214230789U (en) | 2020-12-28 | 2020-12-28 | Projection cup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214230789U (en) |
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2020
- 2020-12-28 CN CN202023219321.0U patent/CN214230789U/en active Active
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