CN223984378U - An invisible top and bottom hinge for hinged doors - Google Patents
An invisible top and bottom hinge for hinged doorsInfo
- Publication number
- CN223984378U CN223984378U CN202520604204.XU CN202520604204U CN223984378U CN 223984378 U CN223984378 U CN 223984378U CN 202520604204 U CN202520604204 U CN 202520604204U CN 223984378 U CN223984378 U CN 223984378U
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- China
- Prior art keywords
- fixing piece
- rotating shaft
- hinge
- door leaf
- door
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Abstract
The utility model relates to the technical field of door and window hinges, in particular to an invisible top-bottom shaft hinge for a vertical hinged door, which comprises a door leaf hinge and a door frame hinge, wherein the door leaf hinge comprises a door leaf fixing piece and a rotating shaft, the door leaf fixing piece is used for being fixed with a door leaf, the rotating shaft is movably matched with the door leaf fixing piece, the rotating shaft can move relative to the door leaf fixing piece along the length direction of the rotating shaft, an adjusting ring is rotationally connected to the door leaf fixing piece, the adjusting ring is in threaded connection with the rotating shaft, the rotating shaft can move along the length direction of the rotating shaft through rotating the adjusting ring, the door frame hinge comprises a shaft sleeve, and the rotating shaft is used for extending into the shaft sleeve and propping against the end part of the shaft sleeve. The invisible top-bottom shaft hinge for the vertical hinged door can improve the working efficiency of constructors when eliminating the defect that the door leaf and the door frame are not firmly matched.
Description
Technical Field
The utility model relates to the technical field of door and window hinges, in particular to an invisible top-bottom shaft hinge for a vertical hinged door.
Background
The invisible top-bottom shaft hinge is a hinge structure which realizes the frameless and extremely simple appearance of a door frame through a hidden design, and plays a role in supporting and fastening a door leaf through up-down bearing.
When installing world axle hinge, install door frame hinge on the door frame generally, install door leaf hinge on the door leaf, make the pivot on the door leaf hinge cooperate with the axle sleeve on the door frame hinge again to realize the swivelling joint of door leaf and door frame.
The accuracy of the positions of the door leaf hinge and the door frame hinge mounted on the corresponding door leaf or door frame determines experience of later-stage users in use, when the positions of the mounted door leaf hinge or door frame hinge deviate from preset positions in the vertical direction, the door leaf is easy to have a movable gap in the vertical direction, so that the matching between the door leaf and the door frame is unstable, the positions of the door leaf hinge or the door frame hinge are usually required to be adjusted in order to eliminate the defect that the matching between the door leaf hinge and the door frame hinge is unstable, and thus, after the screws on the door leaf hinge or the door frame hinge which are required to be adjusted are repeatedly screwed, the matching firmness between the screws and the corresponding door leaf hinge or door frame hinge is easy to be reduced, and meanwhile, the mode is adopted to improve the matching firmness of the door leaf and the door frame, so that the workload of constructors is increased, the defect that the matching between the door leaf and the door frame is unstable in a short time is not favorable for the constructors to eliminate, and the working efficiency of the constructors is difficult to improve at present.
Therefore, in the process of installing the top-bottom shaft hinge, how to improve the working efficiency of constructors when eliminating the defect that the matching of a door leaf and a door frame is unstable is a technical problem which needs to be solved at present.
Disclosure of utility model
The utility model aims to solve the problem that in the existing installation process of the top-bottom shaft hinge, a constructor is difficult to eliminate the defect of unstable matching of a door leaf and a door frame in a short time, and provides an invisible top-bottom shaft hinge for a vertical hinged door, so that the working efficiency of the constructor in eliminating the defect of unstable matching of the door leaf and the door frame is improved.
In order to achieve the above object, the present utility model provides the following technical solutions:
The invisible top-bottom shaft hinge for the vertical hinged door comprises a door leaf hinge and a door frame hinge, wherein the door leaf hinge comprises a door leaf fixing piece and a rotating shaft, the door leaf fixing piece is used for being fixed with a door leaf, the rotating shaft is movably matched with the door leaf fixing piece, the rotating shaft can move along the length direction of the rotating shaft relative to the door leaf fixing piece, an adjusting ring is rotationally connected to the door leaf fixing piece and is in threaded connection with the rotating shaft, the rotating shaft can move along the length direction of the rotating shaft through rotating the adjusting ring, the door frame hinge comprises a shaft sleeve, and the rotating shaft is used for extending into the shaft sleeve and propping against the end part of the shaft sleeve.
As a preferential technical scheme of the application, the door leaf fixing piece is provided with a clamping block, the rotating shaft is provided with a clamping groove, the length direction of the clamping groove is in the same direction as the length direction of the rotating shaft, and the clamping block is clamped in the clamping groove.
As a preferential technical scheme of the application, the outer ring of the adjusting ring is hexagonal.
As a preferred technical scheme of the application, the rotating shaft comprises a first rotating shaft part and a second rotating shaft part, the second rotating shaft part is sleeved outside the first rotating shaft part, the first rotating shaft part is in threaded fit with the adjusting ring, a spring is further connected between the first rotating shaft part and the second rotating shaft part, the spring has elasticity, the length direction of the spring is in the same direction as the length direction of the rotating shaft, and the spring is used for providing elastic force to enable the first rotating shaft part to extend to the second rotating shaft part when the first rotating shaft part is not acted by external force;
The first rotating shaft part is used for extending into the shaft sleeve, and the second rotating shaft part is used for propping against the end part of the shaft sleeve.
As a preferred technical scheme of the application, the end part of the rotating shaft, which faces the shaft sleeve, is in a hemispherical structure.
As a preferred technical scheme of the application, when the shaft sleeve is matched with the rotating shaft, the side wall of one part of the rotating shaft is attached to the inner wall of the shaft sleeve, and the one part of the rotating shaft exerts pressure on the inner wall of the shaft sleeve.
As a preferred technical scheme of the application, the door frame hinge further comprises a first fixing piece and a base, wherein the first fixing piece is used for being fixed with the door frame, a first matching groove is formed in the base and used for allowing the first fixing piece to pass through, and the fixing piece can move along the length direction of the first matching groove and is used for changing the distance between the base and the door frame;
The base is also provided with a plurality of threaded holes, and the threaded holes are used for being in threaded fit with the knob so that the knob is abutted against the first fixing piece, and the first fixing piece is fixed relative to the base.
As a preferential technical scheme of the application, the door frame hinge further comprises a second fixing piece, wherein the second fixing piece is used for being placed in the door frame, the first fixing piece is connected with the second fixing piece through a screw, and the first fixing piece and the second fixing piece are matched to clamp the door frame.
As a preferential technical scheme of the application, the door frame hinge further comprises a door frame stabilizing gasket, wherein the door frame stabilizing gasket is used for being clamped in a door frame, and the second fixing piece is clamped on the door frame stabilizing gasket.
Compared with the prior art, the utility model has the beneficial effects that:
1. In the scheme of the application, the adjusting ring is rotated relative to the door leaf fixing piece so as to enable the rotating shaft to move along the length direction of the rotating shaft, thereby adjusting the relative position between the rotating shaft and the door leaf fixing piece, adjusting the relative position between the door leaf and the rotating shaft, after the door frame hinge is arranged on the door frame and the door leaf hinge is matched with the door frame hinge, at the moment, when a movable gap exists between the door leaf and the door frame hinge in the vertical direction, the adjusting ring can be rotated, thereby adjusting the distance between the part of the rotating shaft, which is used for abutting against the end part of the shaft sleeve, and the door leaf, so as to eliminate the movable gap between the door leaf and the door frame in the vertical direction, in the process, the position of the door leaf hinge or the door frame hinge is not required to be adjusted, thereby avoiding the adjustment of the corresponding screw on the door leaf hinge or the door frame hinge, and being beneficial to the defect of unstable matching between the door leaf and the door frame in a short time by adjusting the adjusting ring, and further improving the working efficiency of constructors; in the process of installing the door leaf on the door frame, the rotating shaft can move towards the direction close to the door leaf hinge, so that the length of the rotating shaft extending out of the door leaf fixing piece is reduced, more space is provided for the rotating shaft extending into the shaft sleeve in the process of matching the door leaf hinge with the door frame hinge, and the matching convenience of the rotating shaft and the shaft sleeve is further improved;
2. Further, when the adjusting ring is rotated to adjust the position of the rotating shaft relative to the door leaf fixing piece, the rotating shaft extends out from one side of the door leaf fixing piece facing the door leaf, and a matching hole is formed in a region of the door leaf corresponding to the rotating shaft and used for accommodating the rotating shaft, so that the matching of the door leaf hinge and the door leaf is further facilitated, meanwhile, as the matching hole can be formed in the door leaf in advance, in the process of installing the door leaf fixing piece on the door leaf, the door leaf fixing piece can be matched with the door leaf through the rotating shaft and the matching hole in advance, so that the positioning of the door leaf fixing piece relative to the door leaf is facilitated, and the accuracy of installing the door leaf fixing piece on the door leaf can be improved;
3. Further, the outer ring of the adjusting ring is arranged to be hexagonal, so that the adjusting ring is matched with an outer hexagonal wrench, particularly a flat hexagonal wrench, and the hexagonal wrench is clamped on the adjusting ring, so that the hexagonal wrench drives the adjusting ring to rotate, and the position of the rotating shaft relative to the door leaf fixing piece is convenient to adjust;
4. Further, through setting up pivot first portion and pivot second portion to make being connected with the spring between pivot first portion and the pivot second portion, make in pivot and axle sleeve matched with in-process, pivot first portion stretches into in the axle sleeve, pivot second portion offsets with the tip of axle sleeve, and makes the spring be in compression form, so, when door leaf hinge and door frame hinge are joined in marriage, can improve the steadiness that pivot first portion stretches into in the axle sleeve, reduced the risk that pivot first portion deviate from in the axle sleeve.
Drawings
FIG. 1 is a schematic view of an embodiment of a concealed top and bottom hinge for a swing door according to the present application;
FIG. 2 is a schematic view of a hidden top-bottom hinge for a swing door according to one embodiment of the present application;
FIG. 3 is a schematic view of a door frame hinge in one embodiment of a hidden top and bottom hinge for a swing door according to the present application;
the figure shows that the door comprises a 1-door leaf hinge, a 2-door frame hinge, a 3-door leaf fixing piece, a 4-rotating shaft, a 5-adjusting ring, a 6-shaft sleeve, a 7-clamping block, an 8-clamping groove, a 9-rotating shaft first part, a 10-rotating shaft second part, an 11-spring, a 12-first fixing piece, a 13-base, a 14-first matching groove, a 15-second fixing piece and a 16-door frame stabilizing gasket.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.
Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
The invisible world shaft hinge for the vertical hinged door is shown in fig. 1-3, and comprises a door leaf hinge 1 and a door frame hinge 2, wherein the door leaf hinge 1 comprises a door leaf fixing piece 3 and a rotating shaft 4, the door leaf fixing piece 3 is used for being fixed with a door leaf, the rotating shaft 4 is movably matched with the door leaf fixing piece 3, the rotating shaft 4 can move relative to the door leaf fixing piece 3 along the length direction of the door leaf fixing piece, an adjusting ring 5 is rotatably connected to the door leaf fixing piece 3, the adjusting ring 5 is in threaded connection with the rotating shaft 4, the rotating shaft 4 can move along the length direction of the door frame hinge 2 through rotating the adjusting ring 5, the rotating shaft 4 comprises a shaft sleeve 6, and the rotating shaft 4 is used for extending into the shaft sleeve 6 and propping against the end part of the shaft sleeve 6.
According to the application, the adjusting ring 5 is rotated relative to the door leaf fixing piece 3 so as to enable the rotating shaft 4 to move along the length direction of the rotating shaft 4, thereby adjusting the relative position between the rotating shaft 4 and the door leaf fixing piece 3, adjusting the relative position between the door leaf and the rotating shaft 4, after the door leaf hinge 2 is installed on the door frame and the door leaf hinge 1 is matched with the door leaf hinge 2, at the moment, when a movable gap exists between the door leaf and the door leaf in the vertical direction, the adjusting ring 5 can be rotated, thereby adjusting the distance between the part of the rotating shaft 4, which is used for abutting against the end part of the shaft sleeve 6, and the door leaf, and the movable gap between the door leaf and the door leaf in the vertical direction is eliminated, in the process, the position of the door leaf hinge 1 or the door leaf hinge 2 is not required to be adjusted, so that screws on the corresponding door leaf 1 or door leaf hinge 2 are prevented from being adjusted, and the defect that the door leaf and the door frame are not matched is eliminated in a short time by adjusting the adjusting ring 5, and the working efficiency of a constructor is improved;
Further, when rotating adjusting ring 5 in order to adjust the position of pivot 4 relative door leaf stationary blade 3, pivot 4 stretches out from the one side of orientation door leaf on the door leaf stationary blade 3, the region of corresponding pivot 4 on its door leaf has been seted up the mating hole, its mating hole is used for holding pivot 4, thereby further be convenient for the cooperation of door leaf hinge 1 and door leaf, simultaneously, because the mating hole can be seted up in advance on the door leaf for at the in-process of installing door leaf stationary blade 3 at the door leaf, because door leaf stationary blade 3 can cooperate with the door leaf through pivot 4 and mating hole in advance, thereby more do benefit to the location of door leaf stationary blade 3 relative door leaf, can improve the accuracy of door leaf stationary blade 3 installation on the door leaf.
As a preferred embodiment, in addition to the above-mentioned aspect, the door leaf fixing piece 3 is further provided with a clamping block 7, the rotating shaft 4 is provided with a clamping groove 8, the length direction of the clamping groove 8 is in the same direction as the length direction of the rotating shaft 4, and the clamping block 7 is clamped in the clamping groove 8.
Further, through setting up draw-in groove 8 and fixture block 7, make fixture block 7 card in draw-in groove 8, when rotating adjusting ring 5, fixture block 7 can follow the relative draw-in groove 8 of length direction of draw-in groove 8 and remove, and pivot 4 is along the relative door leaf hinge 1 of length direction of pivot 4 and remove, has so improved the stability that pivot 4 removed.
In a preferred embodiment, in addition to the above embodiment, the outer ring of the adjusting ring 5 has a hexagonal shape.
Further, set up the outer lane of adjusting ring 5 into the hexagon, make this adjusting ring 5 adaptation outer hexagonal spanner, specific be flat hexagonal spanner, through with hexagonal spanner card on adjusting ring 5 to this makes hexagonal spanner drive adjusting ring 5 rotation, thereby is convenient for adjust the position of pivot 4 relative door leaf stationary blade 3.
As a preferred embodiment, on the basis of the above manner, the rotating shaft 4 further includes a first rotating shaft portion 9 and a second rotating shaft portion 10, the second rotating shaft portion 10 is sleeved outside the first rotating shaft portion 9, the first rotating shaft portion 9 is in threaded fit with the adjusting ring 5, a spring 11 is further connected between the first rotating shaft portion 9 and the second rotating shaft portion 10, the spring 11 has elasticity, the length direction of the spring 11 is in the same direction as the length direction of the rotating shaft 4, and the spring 11 is used for providing elastic force to enable the first rotating shaft portion 9 to extend to the second rotating shaft portion 10 when no external force acts on the first rotating shaft portion 9;
The first rotating shaft part 9 is used for extending into the shaft sleeve 6, and the second rotating shaft part 10 is used for propping against the end part of the shaft sleeve 6.
Further, through setting up pivot first part 9 and pivot second part 10 to make be connected with spring 11 between pivot first part 9 and the pivot second part 10, make in pivot 4 and the in-process that shaft sleeve 6 cooperatees, pivot first part 9 stretches into in the shaft sleeve 6, pivot second part 10 offsets with the tip of shaft sleeve 6, and make spring 11 be in compression form, so, when door leaf hinge 1 and door frame hinge 2 cooperate, can improve the steadiness that pivot first part 9 stretches into in the shaft sleeve 6, reduced the risk that pivot first part 9 deviate from in the shaft sleeve 6.
In the second embodiment, further, referring to fig. 1 to fig. 3, the end portion of the first rotating shaft portion 9, which faces the shaft sleeve 6, has a hemispherical structure.
Further, the end part of the rotating shaft part 9, which faces the shaft sleeve 6, is arranged to be in a hemispherical structure, so that the rotating shaft part 9 can extend into the shaft sleeve 6, and the rotating shaft part 9 can be matched with the shaft sleeve 6 conveniently.
In a preferred embodiment, when the shaft sleeve 6 is fitted to the shaft 4, the side wall of the shaft portion 9 is fitted to the inner wall of the shaft sleeve 6, and the shaft portion 9 applies pressure to the inner wall of the shaft sleeve 6.
Further, when the shaft sleeve 6 is matched with the shaft 4, the part 9 of the shaft can exert pressure on the inner wall of the shaft sleeve 6, so that the matching stability of the part 9 of the shaft and the shaft sleeve 6 can be further improved.
As a preferred embodiment, on the basis of the above manner, the door frame hinge 2 further includes a first fixing piece 12 and a base 13, where the first fixing piece 12 is used for being fixed with the door frame, the base 13 is provided with a first matching groove 14, the first matching groove 14 is used for allowing the first fixing piece 12 to pass through, and the fixing piece can move along the length direction of the first matching groove 14, so as to change the distance between the base 13 and the door frame;
The base 13 is further provided with a plurality of threaded holes, and the threaded holes are used for being in threaded fit with the knob so that the knob abuts against the first fixing piece 12, and the first fixing piece 12 is fixed relative to the base 13.
Further, by arranging the threaded hole on the base 13, the threaded hole is in threaded fit with the knob, so that the knob is abutted against the first fixing piece 12 penetrating through the first matching groove 14, and the first fixing piece 12 is fixed relative to the base 13, so that when the distance between the base 13 and the door frame is adjusted, the relative position between the base 13 and the door frame is fixed conveniently, meanwhile, the flexibility of adjusting the relative position of the door leaf and the door frame is further improved, and meanwhile, the top surface and the side surface of the first matching groove 14 are respectively corresponding to at least two threaded holes, so that the stability of fixing the first fixing piece 12 can be further improved.
As a preferred embodiment, on the basis of the above mode, the door frame hinge 2 further includes a second fixing piece 15, the second fixing piece 15 is used for being placed in the door frame, the first fixing piece 12 and the second fixing piece 15 are connected through a screw, and the first fixing piece 12 and the second fixing piece 15 cooperate to clamp the door frame.
In a preferred embodiment, in addition to the above embodiment, the door frame hinge 2 further includes a door frame stabilizing spacer 16, the door frame stabilizing spacer 16 is configured to be locked in the door frame, and the second fixing piece 15 is locked on the door frame stabilizing spacer 16.
Further, through setting up second stationary blade 15 and door frame steady pad 16, can be when first stationary blade 12 and second stationary blade 15 join in marriage, further improve the fixed steadiness of first stationary blade 12 relative door frame, and then improve have no access to it frame and door leaf matched with steadiness.
The above embodiments are only for illustrating the present utility model and not for limiting the technical solutions described in the present utility model, and although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the above embodiments, and thus any modifications or equivalent substitutions are made thereto, and all technical solutions and modifications thereof without departing from the spirit and scope of the present utility model are included in the scope of the claims of the present utility model.
Claims (9)
1. The invisible top-bottom shaft hinge for the vertical hinged door is characterized by comprising a door leaf hinge and a door frame hinge, wherein the door leaf hinge comprises a door leaf fixing piece and a rotating shaft, the door leaf fixing piece is used for being fixed with a door leaf, the rotating shaft is movably matched with the door leaf fixing piece to enable the rotating shaft to move along the length direction of the rotating shaft relative to the door leaf fixing piece, an adjusting ring is rotationally connected to the door leaf fixing piece and is in threaded connection with the rotating shaft, the rotating shaft can move along the length direction of the rotating shaft through rotating the adjusting ring, the door frame hinge comprises a shaft sleeve, and the rotating shaft is used for extending into the shaft sleeve and propped against the end part of the shaft sleeve.
2. The invisible world axle hinge for a vertical hinged door of claim 1, wherein the door leaf fixing piece is provided with a clamping block, the rotating shaft is provided with a clamping groove, the length direction of the clamping groove is in the same direction as the length direction of the rotating shaft, and the clamping block is clamped in the clamping groove.
3. The invisible world axle hinge for a vertical hinged door of claim 2, wherein the outer ring of the adjusting ring is hexagonal.
4. A invisible world axle hinge for a vertical hinged door is characterized in that the rotating axle comprises a first rotating axle part and a second rotating axle part, the second rotating axle part is sleeved outside the first rotating axle part, the first rotating axle part is in threaded fit with an adjusting ring, a spring is further connected between the first rotating axle part and the second rotating axle part, the spring has elasticity, the length direction of the spring is in the same direction as the length direction of the rotating axle, and the spring is used for providing elastic force to enable the first rotating axle part to extend out of the second rotating axle part when the first rotating axle part is not acted by external force;
The first rotating shaft part is used for extending into the shaft sleeve, and the second rotating shaft part is used for propping against the end part of the shaft sleeve.
5. A concealed vertical hinged door as claimed in claim 4, wherein the end of the shaft portion facing the shaft sleeve is in a hemispherical structure.
6. A concealed vertical hinged door as claimed in claim 5, wherein when the sleeve is engaged with the shaft, a portion of the shaft has a side wall that engages an inner wall of the sleeve and a portion of the shaft applies pressure to the inner wall of the sleeve.
7. The invisible world hinge for a vertical hinged door of claim 6, wherein the door frame hinge further comprises a first fixing piece and a base, the first fixing piece is used for being fixed with the door frame, a first matching groove is formed in the base and used for allowing the first fixing piece to pass through, and the fixing piece can move along the length direction of the first matching groove and is used for changing the distance between the base and the door frame;
The base is also provided with a plurality of threaded holes, and the threaded holes are used for being in threaded fit with the knob so that the knob is abutted against the first fixing piece, and the first fixing piece is fixed relative to the base.
8. The invisible world axle hinge for a vertical hinged door of claim 7, wherein the door frame hinge further comprises a second fixing piece, the second fixing piece is used for being placed in a door frame, the first fixing piece is connected with the second fixing piece through a screw, and the first fixing piece and the second fixing piece are matched to clamp the door frame.
9. The invisible world axle hinge for a vertical hinged door of claim 8, wherein the door frame hinge further comprises a door frame stabilizing gasket, the door frame stabilizing gasket is used for being clamped in a door frame, and the second fixing piece is clamped on the door frame stabilizing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520604204.XU CN223984378U (en) | 2025-04-02 | 2025-04-02 | An invisible top and bottom hinge for hinged doors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520604204.XU CN223984378U (en) | 2025-04-02 | 2025-04-02 | An invisible top and bottom hinge for hinged doors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223984378U true CN223984378U (en) | 2026-03-10 |
Family
ID=98966204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520604204.XU Active CN223984378U (en) | 2025-04-02 | 2025-04-02 | An invisible top and bottom hinge for hinged doors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223984378U (en) |
-
2025
- 2025-04-02 CN CN202520604204.XU patent/CN223984378U/en active Active
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