CN216022302U - Adjustable ventilation volume's champignon device - Google Patents
Adjustable ventilation volume's champignon device Download PDFInfo
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- CN216022302U CN216022302U CN202122307390.5U CN202122307390U CN216022302U CN 216022302 U CN216022302 U CN 216022302U CN 202122307390 U CN202122307390 U CN 202122307390U CN 216022302 U CN216022302 U CN 216022302U
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Abstract
The utility model belongs to the technical field of aromatherapy articles, and particularly relates to an aromatherapy device capable of adjusting ventilation. Comprises a front shell, a middle disc and a rear shell; the middle disc is arranged between the front shell and the rear shell; the inner sides of the front shell and the rear shell are provided with cylindrical positioning columns which can be butted, the center of the middle disc is provided with a round hole, and the positioning columns are butted after penetrating through the round hole of the middle disc, so that the middle disc can rotate in the front shell and the rear shell; the incense is in a circular ring shape and is arranged between the front shell and the middle disc, the middle disc is provided with air holes, and the air holes are arranged around the circular holes in a surrounding manner and correspond to the incense position; the rear shell is provided with air diffusing holes, and the positions of the air diffusing holes can correspond to the air vents of the middle disc; when the middle disc is rotated for a certain angle, the air diffusing holes can be ensured to be completely staggered with the vent holes, so that the air diffusing holes are completely shielded by the non-perforated area of the middle disc. The fragrance box is simple in structure, has two fixed using modes, is convenient to operate and low in cost, and can adjust fragrance emission amount, so that fragrance concentration is adjusted, even fragrance is closed, applicability is improved, and fragrance loss is reduced.
Description
Technical Field
The utility model belongs to the technical field of aromatherapy articles, and particularly relates to an aromatherapy device capable of adjusting ventilation.
Background
In order to be suitable for more occasions and convenient to use, a plurality of fireless solid aromatherapy products are put on the market, do not need to be heated, can be made into any shape, and emit fragrance by self volatilization. However, the solid incense products are not easy to store and not beautiful enough. The aromatherapy device meets the pursuit of people for convenient, comfortable and high-grade life.
Disclosure of Invention
The utility model aims to provide the aromatherapy device with the adjustable ventilation capacity, which is simple in structure and low in cost.
The utility model provides an aromatherapy device capable of adjusting ventilation, which comprises a front shell, a middle disc and a rear shell;
the middle disc is arranged between the front shell and the rear shell and can rotate in the front shell and the rear shell; the champignon is arranged between the front shell and the middle disc, and the front shell and the middle disc can seal the champignon; the middle disc is provided with a plurality of vent holes which are arranged around the rotating shaft of the middle disc in a surrounding way, and the positions of the vent holes correspond to the position of the aroma;
the backshell main part can laminate on the center, is equipped with a plurality of scattered gas pockets on the backshell, and the position of scattered gas pocket is: the fragrance of the aromatherapy can be volatilized from the air dispersing holes through the air holes corresponding to the positions of the air holes of the middle disc; when the middle disc is rotated, all the air diffusing holes can be completely staggered with the vent holes, the air diffusing holes are completely shielded by the non-perforated area of the middle disc, and the fragrance of the aromatherapy is sealed and cannot be volatilized.
In the utility model, a central circular hole is arranged in the center of the central disc, an inner ring retaining wall and an outer ring retaining wall which are concentric internally and externally are arranged on one side of the central disc facing a front shell, and the edges of the inner ring retaining wall and the central circular hole are butted; a circle of circular tube-shaped front shell retaining wall is also arranged on the inner side of the front shell; the front shell retaining wall can be inserted between the inner ring retaining wall and the outer ring retaining wall of the middle disc and fixed; a circle of circular tube-shaped rear shell retaining wall is also arranged on the inner side of the rear shell towards the direction of the central disk; the retaining wall of the back shell is used as a positioning column, the outer diameter of the retaining wall of the back shell is matched with the inner diameter (namely the diameter of the central circular hole) of the inner retaining wall of the central disk, and the retaining wall can penetrate through the central circular hole of the central disk and be inserted into the inner retaining wall of the central disk, so that the front shell and the central disk can rotate together by taking the positioning column as a rotating shaft, namely, the retaining column and the back shell form relative rotation.
Or, in the utility model, the center positions of the inner sides of the front shell and the rear shell are oppositely provided with butt-jointed cylindrical positioning columns, the center of the central disc is provided with a central circular hole, the diameter of the central circular hole is matched with that of the positioning columns of the front shell and the rear shell, and the positioning columns of the front shell and the rear shell are in butt joint after penetrating through the central circular hole of the central disc; the middle disc can rotate in the front shell and the rear shell by taking the positioning column as a rotating shaft.
Furthermore, the butt joint end parts of the positioning columns of the front shell and the rear shell are respectively provided with an external thread and an internal thread which are matched with each other correspondingly and are connected in a rotating way through threads; or magnets capable of attracting each other are respectively arranged in the positioning columns of the front shell and the rear shell, and the front shell and the rear shell are detachably connected through magnetic attraction of the magnets.
Furthermore, one side of the central disc, which faces the front shell, is provided with a circle of outer ring retaining wall which is concentric with the central circular hole of the central disc.
In the utility model, the champignon is in a circular ring shape, the inner diameter of the champignon is matched with the outer diameter of the outer ring retaining wall of the central disc, the central inner ring of the champignon can be clamped and sleeved on the outer ring retaining wall, and the outer ring retaining wall is used as a champignon supporting and positioning structure.
In the utility model, the vent holes are arranged around the central circular hole of the central disc at equal intervals; the air dispersing holes are arranged on the rear shell around the positioning columns in a surrounding mode at equal intervals corresponding to the positions of the air vent holes; and the air dispersion holes can be completely shielded by the areas among the air vent holes.
In the utility model, the air dispersing holes are provided with grids.
In the utility model, the centers of the front shell and the rear shell are also provided with openings corresponding to the central round hole of the central disc for the hanging rope or the bracket to pass through.
In the utility model, a vehicle-mounted fixing frame is also arranged; the main body of the vehicle-mounted fixing frame is a cylinder which can be detachably inserted into and penetrates through the openings of the front shell and the rear shell; the rear end of the vehicle-mounted fixing frame is provided with a blade fixing claw which extends out of the opening of the rear shell; the blade fixing claws can be inserted on the blades of the air outlet of the automobile air conditioner.
In the utility model, the cylinder body and the blade fixing claw of the vehicle-mounted fixing frame are integrally formed, and the adopted elastic material is TPU and the like.
When the incense box is used, the incense is made into a circular ring shape, the incense is arranged on the middle disc, the front shell and the rear shell cover the middle disc, the positioning column of the rear shell penetrates through the central circular hole of the middle shell to be used as a rotating shaft, and the front shell and the middle disc can form a cavity for storing the incense block; the middle disc can rotate between the front shell and the rear shell by taking the positioning column as a rotating shaft; wherein:
rotating the middle disc to rotate the vent holes of the middle disc to positions corresponding to the air dispersing holes on the rear shell, and exposing the aromatherapy through the vent holes and the air dispersing holes after the vent holes and the air dispersing holes are overlapped to completely disperse the fragrance;
the middle disc is rotated to stagger the positions of the vent holes and the air diffusing holes, so that the overlapping area of the vent holes and the air diffusing holes is reduced, and the fragrance diffusing amount is reduced, thereby reducing the fragrance;
the middle disc is rotated, the positions of the vent holes and the air diffusing holes are completely staggered, so that the air diffusing holes correspond to the disc surface of the middle disc, namely fragrance diffusion is closed, and fragrance loss is reduced.
And, in the center of preceding shell and backshell is equipped with the trompil scheme, can be provided with two kinds of modes of use:
(1) the hanging rope penetrates through the holes of the front shell and the rear shell, so that the incense can be hung for use (such as being hung on a rearview mirror of an automobile or a floor lamp at home) and the fragrance of the incense is slowly and naturally emitted;
(2) inserting the vehicle-mounted fixing frame into the round hole, and clamping the automobile air conditioner air outlet blade fixing claw on the blade of the vehicle-mounted fixing frame; the claw-shaped fixing structure of the blade fixing claw refers to the fixing claw structure of a conventional mobile phone support at the automobile air conditioner opening.
The fragrance box is simple in structure, convenient and fast to operate and low in cost, fragrance emission amount can be adjusted, so that fragrance concentration can be adjusted, even fragrance is closed, applicability is improved, and fragrance loss is reduced.
Drawings
Fig. 1 is an illustration of the explosive structure of example 1.
Fig. 2 is a schematic representation of the explosive structure from another angle for example 1.
Fig. 3 is a schematic view of the combined structure of embodiment 1.
Reference numbers in the figures: the device comprises a front shell 1, a middle disc 2, a rear shell 3, an air vent 4, an aromatherapy 5, an inner ring retaining wall 6, an outer ring retaining wall 7, an air diffusing hole 8, a vehicle-mounted fixing frame 9, a front shell retaining wall 10, a closed flat plate 11 and a rear shell retaining wall 12.
Detailed Description
Example 1
The utility model comprises a front shell 1, a middle disc 2 and a rear shell 3; all adopt plastic materials, and the outline is circular. The middle tray 2 is disposed between the front case 1 and the rear case 2. The central disc 2 and the rear shell 2 are both partially spherical and can be arranged together in a fitting manner, and the front shell 1 and the rear shell 2 are partially spherical with the same shape and are arranged oppositely; when the front shell 1 is covered on the central disc 2, a cavity capable of storing the champignon 5 is formed. As shown in fig. 1.
The centers of the front shell 1, the middle disc 2 and the rear shell 3 are all provided with a central round hole for a hanging rope or a bracket to pass through.
An inner and outer concentric circular tube-shaped inner ring retaining wall 6 and an outer ring retaining wall 7 are arranged on one side of the middle disc 2 facing the inner side of the front shell 1, and the inner ring retaining wall 6 is butted with the edge of a central circular hole of the middle disc 2;
the middle disc 2 is arranged between the front shell 1 and the rear shell 2, the middle disc 2 is used for containing the champignon 5, the champignon 5 is positioned between the front shell 1 and the middle disc 2, and the outer contour edges of the front shell 1 and the middle disc 2 can be tightly covered together to form an inner cavity for storing the champignon 5; champignon 5 is the ring form, sets up between preceding shell 1 and well dish 2, and the external diameter phase-match of champignon 5 internal diameter and outer lane barricade 7, and the central inner circle of champignon 5 can the card cover on outer lane barricade 7, and outer lane barricade 7 supports location structure as the champignon promptly.
A circle of circular tube-shaped front shell retaining wall 10 is also arranged on the inner side of the front shell 1 around the central circular hole of the front shell, and the distance between the inner ring retaining wall 6 and the outer ring retaining wall 7 of the middle disc 2 is just equal to the wall thickness of one front shell retaining wall 10; the front shell retaining wall 10 can be inserted between the inner and outer retaining walls of the middle disc 2 and can be fixed with the inner and outer retaining walls through a plurality of hook structures in a conventional concave-convex butt joint mode; the circular profile border of well dish 2 can closely laminate 1 border of shell in the front, and 1 inboard of preceding shell is equipped with the annular closed flat plate 11 of round around preceding shell barricade 10, and closed flat plate 11 can laminate in one side of champignon 5, plays the effect of the fixed champignon 5 of supplementary support.
The inboard back shell 3 of also being equipped with round tubular back shell barricade 12 of a circle and the concentric circle of center round hole towards the direction of central disk 2, as the reference column, the internal diameter phase-match of the internal circle barricade 6 of back shell barricade 12 external diameter and central disk 2, back shell barricade 12 can pass 2 center trompils of central disk and insert in the inner circle barricade 6, makes back shell barricade 12 (reference column) as the pivoted pivot of central disk 2.
Six vent holes 4 are formed in the middle disc 2, the vent holes 4 are arranged around a central circular hole of the middle disc 2 in an equidistant surrounding mode, namely, one vent hole 4 is arranged by rotating 60 degrees, the vent hole 4 is in the shape of a sector of a circle concentric with the central circular hole of the middle disc 2, and the area of the sector is not larger than the area of the interval between every two vent holes 4; meanwhile, the positions of the air holes 4 which are arranged in a surrounding way correspond to the positions of the annular body of the aromatherapy 5;
six air dispersing holes 8 are formed in the rear shell 3, and the outer contours of the air dispersing holes 8 are in the same fan shape as the vent holes 4 and are provided with grids; the air dispersing holes 8 are arranged around the central circular hole of the rear shell 3 at equal intervals in a surrounding manner, namely one air dispersing hole 8 is arranged by rotating 60 degrees and the position of the air dispersing hole 8 can correspond to the position of each vent hole 4;
when the middle disc 2 is rotated, the air diffusing holes 8 can be staggered or superposed with the air vents 4, so that the air diffusing holes 8 are partially or completely shielded by the non-perforated area of the middle disc 2, and the amount of the fragrance 5 diffusing taste is adjusted, and the fragrance 5 taste is adjusted.
In addition, the inner side wall of the inner ring retaining wall 6 of the middle disc 2 is provided with a plurality of convex strips which are arranged into a circle around the circumference direction; a plurality of rows of annular grooves which are arranged in a circle around the circumference are correspondingly arranged on the outer side wall of the rear shell retaining wall 12; the width/depth of the groove is matched with the width/depth of the raised line of the middle disc 2; one groove is twice as long as one convex strip; the rear shell retaining wall 12 is forcibly extruded and plugged into the inner ring retaining wall 6 of the middle disc 2, a raised line is aligned into a groove by utilizing the characteristic that the toughness of a plastic material can deform and bounce, an annular sliding rail structure is formed, so that the rear shell 3 cannot be easily separated from the middle disc 2, the front shell 1 or the middle disc 2 is shifted back and forth, the front shell 1 and the middle disc 2 rotate back and forth relative to the rear shell 3 together, and the groove and the raised line structure are used as a limiting structure, so that the position of the aroma emission hole 8 is adjusted; when the convex strip is positioned at one end of the groove, the vent holes 4 and the air dispersing holes 8 are completely overlapped, fragrance is emitted to the maximum, when the convex strip rotates and is positioned at the other end of the groove, the vent holes 4 and the air dispersing holes 8 are completely staggered, and the fragrance emission is sealed. And pull out backshell 3 hard, utilize plastics material deformable characteristic, can extract backshell 3, recess and sand grip structure form a backshell 3 and the spacing structure of well 2 plug simultaneously. As can be seen in the block diagram of fig. 1.
Example 2
The utility model comprises a front shell 1, a middle disc 2 and a rear shell 3; all adopt plastic materials, and the outline is circular. The middle tray 2 is disposed between the front case 1 and the rear case 2. Wherein:
the centers of the front shell 1, the middle disc 2 and the rear shell 3 are all provided with a central round hole for a hanging rope or a bracket to pass through;
a circle of circular tube-shaped retaining wall is arranged at the position of a central circular hole of the middle disc 2 and serves as an outer ring retaining wall, matched champignon 5 is correspondingly selected to be circular, and the inner ring of the champignon block 5 can be clamped into the circular tube-shaped retaining wall to play a champignon supporting and positioning role; the front shell 1 and the rear shell 3 can ensure that the opening of the aroma storage cavity 4 can be covered to the maximum extent through the structural design of the inner side surfaces, and the structure of the embodiment 1 can be referred to;
a circle of cylindrical retaining wall (namely a round pipe shape) is oppositely arranged around the central circular hole of each of the inner sides of the front shell 1 and the rear shell 3 and is used as a positioning column for a hanging rope or a bracket to pass through; the positioning columns of the front shell 1 and the rear shell 3 can be fixedly butted; the cylindrical barricade internal diameter in well dish 2 center and reference column external diameter phase-match, 2 center cover on the reference column in well dish, its contact surface is the polished surface design, and well dish 2 can use the reference column to rotate as the pivot. Thereby adjusting the position between the vent hole and the air dispersing hole, refer to example 1 specifically.
The butt joint fixing mode of the positioning columns of the front shell 1 and the rear shell 3 can be that the butt joint end part of the positioning column of the front shell 1 is provided with an external thread section with the diameter smaller than the external diameter of the positioning column and matched with the internal diameter of the positioning column, the internal diameter of the butt joint end part of the positioning column of the rear shell 3 is provided with an internal thread section, and the positioning columns of the front shell 1 and the rear shell 3 are connected through threads; or the butt joint end parts of the positioning columns of the front shell 1 and the rear shell 3 are respectively embedded with magnet blocks and are fixedly connected in a magnetic attraction manner; or may be butted by some conventional pluggable snap structures, which are not described in detail.
When the incense box is used, the incense is made into a circular ring shape, the incense is arranged on the middle disc, the front shell and the rear shell cover the middle disc, the positioning column of the rear shell penetrates through the central circular hole of the middle shell to serve as a rotating shaft, and the front shell and the middle disc can form a cavity capable of storing incense blocks; the middle disc can rotate between the front shell and the rear shell by taking the positioning column as a rotating shaft; wherein:
rotating the middle disc to rotate the vent holes of the middle disc to positions corresponding to the air dispersing holes on the rear shell, and exposing the aromatherapy through the vent holes and the air dispersing holes after the vent holes and the air dispersing holes are overlapped to completely disperse the fragrance;
the middle disc is rotated to stagger the positions of the vent holes and the air diffusing holes, so that the overlapping area of the vent holes and the air diffusing holes is reduced, and the fragrance diffusing amount is reduced, thereby reducing the fragrance;
the middle disc is rotated, the positions of the vent holes and the air diffusing holes are completely staggered, so that the air diffusing holes correspond to the disc surface of the middle disc, namely fragrance diffusion is closed, and fragrance loss is reduced.
In the above embodiment, in addition, a vehicle-mounted fixing frame 9 is further provided; the main body of the vehicle-mounted fixing frame 9 is a cylinder which can be detachably inserted into central circular holes of the front shell 1 and the rear shell 3; the rear end of the vehicle-mounted fixing frame 9 is provided with a blade fixing claw which extends out of a central circular hole of the rear shell 3; the blade fixing claws can be inserted on the blades at the air outlet of the automobile air conditioner; the cylinder and the blade fixing claw of the vehicle-mounted fixing frame 9 are integrally formed, and the adopted elastic material is TPU. Two usage modes can thereby be provided:
(1) the hanging rope penetrates through the holes of the front shell and the rear shell, so that the incense can be hung for use (such as being hung on a rearview mirror of an automobile or a floor lamp at home) and the fragrance of the incense is slowly and naturally emitted;
(2) inserting the vehicle-mounted fixing frame into the round hole, and clamping the automobile air conditioner air outlet blade fixing claw on the blade of the vehicle-mounted fixing frame; the claw-shaped fixing structure of the blade fixing claw refers to the fixing claw structure of a conventional mobile phone support at the automobile air conditioner opening.
The fragrance box is simple in structure, convenient and fast to operate and low in cost, fragrance emission amount can be adjusted, so that fragrance concentration can be adjusted, even fragrance is closed, applicability is improved, and fragrance loss is reduced.
While, for purposes of simplicity of explanation, the above-described methodologies are shown and described as a series of structures, it is to be understood and appreciated that the methodologies are not limited by detail, as some structures may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, but as may be understood by those of ordinary skill in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An aromatherapy device capable of adjusting ventilation volume is characterized by comprising a front shell, a middle disc and a rear shell;
the middle disc is arranged between the front shell and the rear shell and can rotate in the front shell and the rear shell; the champignon is arranged between the front shell and the middle disc, and the front shell and the middle disc can seal the champignon; the middle disc is provided with a plurality of vent holes which are arranged around the rotating shaft of the middle disc in a surrounding way, and the positions of the vent holes correspond to the position of the aroma;
the backshell main part can laminate on the center, is equipped with a plurality of scattered gas pockets on the backshell, and the position of scattered gas pocket is: the fragrance of the aromatherapy can be volatilized from the air dispersing holes through the air holes corresponding to the positions of the air holes of the middle disc; when the middle disc is rotated, all the air diffusing holes can be completely staggered with the vent holes, the air diffusing holes are completely shielded by the non-perforated area of the middle disc, and the fragrance of the aromatherapy is sealed and cannot be volatilized.
2. The aromatherapy device with adjustable ventilation according to claim 1, wherein a central circular hole is formed in the center of the central disc, an inner ring retaining wall and an outer ring retaining wall which are concentric internally and externally are formed on one side of the central disc facing the front case, and the inner ring retaining wall is butted with the edge of the central circular hole; a circle of circular tube-shaped front shell retaining wall is also arranged on the inner side of the front shell; the front shell retaining wall can be inserted between the inner ring retaining wall and the outer ring retaining wall of the middle disc and fixed; a circle of circular tube-shaped rear shell retaining wall is also arranged on the inner side of the rear shell towards the direction of the central disk; the back shell retaining wall is used as a positioning column, the outer diameter of the back shell retaining wall is matched with the inner diameter of the inner ring retaining wall of the middle disc, and the back shell retaining wall can penetrate through the central circular hole of the middle disc to be inserted into the inner ring retaining wall of the middle disc, so that the front shell and the middle disc can rotate together by taking the positioning column as a rotating shaft.
3. The adjustable ventilation aromatherapy device according to claim 1, wherein the front and rear housings are provided with cylindrical positioning posts at opposite central positions inside the front and rear housings, the central disc is provided with a central circular hole at the center, the diameter of the central circular hole matches with that of the positioning posts of the front and rear housings, and the positioning posts of the front and rear housings are butted after passing through the central circular hole of the central disc; the middle disc can rotate in the front shell and the rear shell by taking the positioning column as a rotating shaft.
4. The aromatherapy device with adjustable ventilation according to claim 3, wherein the abutting ends of the positioning posts of the front housing and the rear housing are respectively provided with external threads and internal threads which are matched with each other correspondingly and are connected in a rotating manner through threads; or magnets capable of attracting each other are respectively arranged in the positioning columns of the front shell and the rear shell, and the front shell and the rear shell are detachably connected through magnetic attraction of the magnets.
5. The adjustable ventilation device as claimed in claim 4, wherein a circular tube-shaped outer retaining wall concentric with the central circular hole of the central disc is provided on the side of the central disc facing the front casing.
6. The aromatherapy device with adjustable ventilation capacity according to claim 2 or 5, wherein the aromatherapy device is circular, the inner diameter of the aromatherapy device is matched with the outer diameter of an outer ring retaining wall of the central disc, a central inner ring of the aromatherapy device can be clamped on the outer ring retaining wall, and the outer ring retaining wall is used as an aromatherapy supporting and positioning structure.
7. The aromatherapy device with adjustable ventilation volume according to claim 2 or 5, wherein the ventilation holes are arranged around the central circular hole of the central plate at equal intervals; the air dispersing holes are arranged on the rear shell around the positioning columns in a surrounding mode at equal intervals corresponding to the positions of the air vent holes; and the air dispersion holes can be completely shielded by the areas among the air vent holes.
8. The aromatherapy device with adjustable ventilation according to claim 7, wherein a grill is provided on the air diffusing hole.
9. The aromatherapy device with adjustable ventilation according to claim 8, wherein the centers of the front and rear cases are also provided with openings corresponding to the center circular hole of the central plate for a hanging rope or a bracket to pass through.
10. The aromatherapy device with adjustable ventilation of claim 9, further comprising a vehicle-mounted fixing frame; the main body of the vehicle-mounted fixing frame is a cylinder which can be detachably inserted into and penetrates through the openings of the front shell and the rear shell; the rear end of the vehicle-mounted fixing frame is provided with a blade fixing claw which extends out of the opening of the rear shell; the blade fixing claws can be inserted on the blades of the air outlet of the automobile air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122307390.5U CN216022302U (en) | 2021-09-24 | 2021-09-24 | Adjustable ventilation volume's champignon device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122307390.5U CN216022302U (en) | 2021-09-24 | 2021-09-24 | Adjustable ventilation volume's champignon device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216022302U true CN216022302U (en) | 2022-03-15 |
Family
ID=80599995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122307390.5U Active CN216022302U (en) | 2021-09-24 | 2021-09-24 | Adjustable ventilation volume's champignon device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216022302U (en) |
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2021
- 2021-09-24 CN CN202122307390.5U patent/CN216022302U/en active Active
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