CN212927453U - Single-side thin type three-dimensional adjustable hidden hinge - Google Patents
Single-side thin type three-dimensional adjustable hidden hinge Download PDFInfo
- Publication number
- CN212927453U CN212927453U CN202020001640.5U CN202020001640U CN212927453U CN 212927453 U CN212927453 U CN 212927453U CN 202020001640 U CN202020001640 U CN 202020001640U CN 212927453 U CN212927453 U CN 212927453U
- Authority
- CN
- China
- Prior art keywords
- base
- fixing
- seat
- movable
- rotating shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Hinges (AREA)
Abstract
The utility model relates to a door and window hardware fitting provides a slim three-dimensional adjustable hidden hinge of unilateral, including fixing removal seat on the door leaf, fixing base and the hinge subassembly of fixing on the door frame. The movable seat comprises a movable seat cover plate and a movable seat shell, and a movable seat support is arranged in the movable seat shell; the fixing seat comprises a fixing seat cover plate, a fixing seat base and a fixing seat support, the fixing base is embedded in the fixing seat base, a support groove is formed in the middle of the fixing seat base, the fixing seat support is located in the support groove, and the fixing seat base comprises a bottom plate and two adjusting plates; the hinge assembly comprises a movable side swing arm, a center swing block, a fixed side swing arm, a fork-shaped swing arm, a movable base support rotating shaft, a movable side swing arm rotating shaft, a center swing block rotating shaft, a center rotating shaft, a fork-shaped swing arm rotating shaft, a fixed side swing arm rotating shaft and a fixed base support rotating shaft.
Description
Technical Field
The utility model relates to a door and window hardware component field, in particular to hidden three-dimensional regulation hinge structure of door and window class.
Background
At present, most of hidden hinges on the market adopt a symmetrical structural design, and connecting rod swing arms are hidden in shells on two sides, so that the shells on two sides are thicker, and both door leaves and door frames need to be provided with deeper holes, so that the strength of the door frames is reduced; under the condition of common door thickness (40-45 mm), the existing three-dimensional adjustable hidden hinge cannot be installed in the middle, and inconvenience is brought to opening of a door factory; the position of the existing three-dimensional adjustable hidden hinge is adjusted on the inner side of the shell, so that the adjustment is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to current three-dimensional hidden hinge of adjusting adjust the operation complicated and the door on the trompil not enough, provide a convenient hinge of unilateral slim (the door frame side can open shallow hole), installation placed in the middle (specification 40-45mm commonly used), three-dimensional regulation simultaneously.
The utility model adopts the technical proposal that: a single-side thin three-dimensional adjustable hidden hinge structure comprises a moving seat fixed on a door leaf, a fixed seat fixed on a door frame and a hinge assembly. The movable seat comprises a movable seat cover plate and a movable seat shell, movable seat cover plate buckles are arranged on two sides of the movable seat cover plate, a movable seat support is arranged in the movable seat shell, shell left and right adjusting holes and a movable seat cover plate embedding hole are arranged on two sides of the movable seat shell, and the movable seat cover plate buckles are embedded in the movable seat cover plate embedding holes to fix the movable seat cover plate in the movable seat shell; two sides of the shell of the movable seat are provided with shell fixing holes, and two movable seat fixing screws penetrate through the shell fixing holes to fix the movable seat on the door leaf; the movable seat support is provided with support adjusting holes in two sides, a movable seat left and right adjusting screw is embedded into the shell left and right adjusting holes and the movable seat left and right adjusting holes, and the movable seat shell and the movable seat support are connected.
The fixing seat comprises a fixing seat cover plate, a fixing seat base and a fixing seat support, fixing seat cover plate buckles are arranged on two sides of the fixing seat cover plate, the fixing base is embedded in the fixing seat base, fixing seat cover plate embedding holes are arranged on two sides of the fixing seat base, and the fixing seat cover plate buckles are embedded in the fixing seat cover plate embedding holes to fix the fixing seat cover plate on the fixing seat base; the middle part of the fixed seat base is provided with a bracket groove, the fixed seat bracket is positioned in the bracket groove, the middle part of the bracket groove is provided with a bracket front-back adjusting hole, and two sides of the bracket groove are provided with adjusting plate embedding holes; the fixing seat base comprises a bottom plate and two adjusting plates, and adjusting plate adjusting grooves are formed in one sides of the adjusting plates. The two sides of the fixing seat base are provided with base fixing holes, the two sides of the bottom plate are provided with bottom plate fixing holes, the other side of the adjusting plate is provided with an adjusting plate fixing hole, and two base fixing screws penetrate through the base fixing holes, the adjusting plate fixing holes and the bottom plate fixing holes to fix the fixing seat base, the adjusting plate and the bottom plate together. The fixed seat bracket is provided with a fixed seat bracket hole; the fixing seat base is provided with two base screw holes in the middle, the fixing seat support is provided with two support screw holes, and two base fixing screws respectively penetrate through the base screw holes, the base screw holes and the support screw holes to sequentially connect and fix the fixing seat base, the fixing seat base and the fixing seat support. The fixing seat base both sides are equipped with the base fixed orifices, and regulating plate one side is equipped with the base fixed orifices, establishes two fixing seat fixed screws and passes two base fixed orifices and base fixed orifices respectively, fixes the fixing base on the door frame. A front and back adjusting cam is arranged, the bottom of the front and back adjusting cam is embedded into the front and back adjusting groove of the base, and the top of the front and back adjusting cam is embedded into the front and back adjusting hole of the bracket. An upper and a lower adjusting cams are arranged, the bottom of the upper and the lower adjusting cams is embedded into the adjusting groove of the adjusting plate, and the top of the upper and the lower adjusting cams is embedded into the embedding hole of the adjusting plate.
The hinge assembly comprises a movable side swing arm, a central swing block, a fixed side swing arm, a forked swing arm, a movable seat support rotating shaft, a movable side swing arm rotating shaft, a central swing block rotating shaft, a central rotating shaft, a forked swing arm rotating shaft, a fixed side swing arm rotating shaft and a fixed seat support rotating shaft; the rotating shaft of the movable seat support penetrates through one end of the movable side swing arm and is hinged with the movable seat support; the movable side swing arm rotating shaft penetrates through the other end of the movable side swing arm, and two ends of the movable side swing arm rotating shaft are respectively hinged with one ends of the two fixed side swing arms; the central swing block rotating shaft penetrates through one end of the central swing block and is hinged with the movable seat support; the central rotating shaft penetrates through the middle part of the central swinging block and is respectively hinged with the middle parts of the two fixed side swinging arms; the fork-shaped swing arm rotating shaft penetrates through the other end of the central swing block and is hinged with the fork-shaped swing arm; the fixed side swing arm rotating shaft penetrates through one end of the fixed seat support, and two sides of the fixed side swing arm rotating shaft are respectively hinged with the other ends of the two fixed side swing arms; and the rotating shaft of the fixed seat support penetrates through the other end of the forked swing arm and is hinged with the fixed seat support. The two hinged parts are separated by a nylon gasket.
Drawings
FIG. 1 is a schematic view of the hinge in an assembled state;
FIG. 2 is a schematic view of a hinge holder;
FIG. 3 is a schematic view of a movable hinge base;
FIG. 4 is a schematic view of a hinge assembly configuration;
FIG. 5 is a schematic view of a hinge swing arm structure;
FIG. 6 is a sectional view of the hinge in an open position;
fig. 7 is a sectional view of the hinge in a closed state.
In the figures, the reference numerals denote
1. A movable seat;
11. a movable seat cover plate 111 is buckled;
12. a movable seat shell 121, a movable seat cover plate embedding hole 122, a shell left and right adjusting hole 123 and a shell fixing hole;
13. a movable seat bracket 131, a movable seat left and right adjusting hole;
14. a screw rod is adjusted left and right by the movable seat;
15. a movable seat fixing screw;
2. a fixed seat;
21. a fixed seat cover plate 211 is buckled with the fixed seat cover plate;
22. the fixing base 221, the bracket slot 2211, the base front and back adjusting slot 2212, the base screw hole 222, the base fixing hole 223, the fixing base cover plate embedding hole 224, the adjusting plate embedding hole 225 and the base fixing hole;
23. the base 231 of the fixed seat, the bottom plate 2311, the screw hole 2312 of the base, the fixing hole 232 of the bottom plate, the adjusting plate 2321, the fixing hole 2322 of the base, the fixing hole 2323 of the adjusting plate, the adjusting groove 233, the fixing screw 234 of the base and the up-and-down adjusting cam;
24. a fixed seat bracket 241, a bracket front and rear adjusting hole 242 and a bracket screw hole;
25. a base fixing screw;
26. a fixing seat fixing screw;
27. a front and rear adjustment cam;
3. hinge assembly 31, moving side swing arm 32, center swing block 33, fixed side swing arm 34, forked swing arm 35, moving base support shaft 36, moving side swing arm shaft 37, center swing block shaft 38, center shaft 39, forked swing arm shaft 310, fixed side swing arm shaft 311, fixed base support shaft 312, nylon shim.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples.
As shown in the figure, the utility model provides a thin three-dimensional adjustable hidden hinge of unilateral, including fixing removal seat 1 on the door leaf, fixing base 2 and hinge subassembly 3 on the door frame. The movable seat 1 comprises a movable seat cover plate 11 and a movable seat shell 12, and movable seat cover plate buckles 111 are arranged on two sides of the movable seat cover plate 11. The movable seat shell 12 is internally provided with a movable seat support 13, two sides of the movable seat shell 12 are provided with a shell left-right adjusting hole 122 and a movable seat cover plate embedding hole 121, and two sides of the movable seat support 13 are provided with a movable seat left-right adjusting hole 131. The moving seat cover plate fastener 111 is inserted into the moving seat cover plate insertion hole 121 to fix the moving seat cover plate 11 in the moving seat housing 12. A movable seat left-right adjusting screw 14 is embedded into the shell left-right adjusting hole 123 and the movable seat left-right adjusting hole 131, and is connected with the movable seat shell 12 and the movable seat support 13.
The fixing seat 2 comprises a fixing seat cover plate 21, a fixing seat base 22, a fixing seat base 23 and a fixing seat support 24, fixing seat cover plate buckles 211 are arranged on two sides of the fixing seat cover plate 21, the fixing seat base 23 is embedded in the fixing seat base 22, a support groove 221 is arranged in the middle of the fixing seat base 22, the fixing seat support 24 is located in the support groove 221, a base front-back adjusting groove 2211 and two base screw holes 2212 are arranged in the middle of the support groove 221, and base fixing holes 222, fixing seat cover plate embedding holes 223, adjusting plate embedding holes 224 and base fixing holes 225 are arranged on two sides of the fixing seat base; the fixing seat base 23 comprises a base plate 231 and two adjusting plates 232, the adjusting plates 232 are located on two sides of the base plate 231, two base screw holes 2311 are formed in the middle of the base plate 231, base plate fixing holes 2312 are formed in two sides of the base plate 231, base fixing holes 2321 and adjusting plate adjusting grooves 2323 are formed in one side of each adjusting plate 232, adjusting plate fixing holes 2323 are formed in the other side of each adjusting plate, and the fixing seat support 24 is provided with two support screw holes 242 and a support front-rear adjusting hole 241. Two base fixing screws 25 are arranged to pass through the base screw holes 2311, the base screw holes 2212 and the bracket screw holes 242 respectively to connect and fix the fixing base 23, the fixing base 22 and the fixing base bracket 24 in sequence. Two fixing seat fixing screws 26 are respectively arranged to pass through the two base fixing holes 222 and the base fixing hole 2321, so as to fix the fixing seat 2 on the door frame. An upper and lower adjusting cam is arranged, the bottom 234 of which is embedded into the adjusting plate adjusting groove 2323, and the top of which is embedded into the adjusting plate embedding hole 224; a front-rear adjusting cam 27 is provided with a bottom portion inserted into the base front-rear adjusting groove 2211 and a top portion inserted into the bracket front-rear adjusting hole 241. The fixing seat cover plate fastener 211 is embedded into the fixing seat cover plate embedding hole 223 to fix the fixing seat cover plate 21 on the fixing seat base 22. Two base fixing screws 233 are provided to pass through the base fixing holes 225, the adjusting plate fixing holes 2322 and the bottom plate fixing holes 2312 to fix the fixing base 22, the adjusting plate 232 and the bottom plate 231 together.
The hinge assembly 3 includes a moving side swing arm 31, a center swing block 32, a fixed side swing arm 33, a forked swing arm 34, a moving base bracket rotating shaft 35, a moving side swing arm rotating shaft 36, a center swing block rotating shaft 37, a center rotating shaft 38, a forked swing arm rotating shaft 39, a fixed side swing arm rotating shaft 310, a fixed base bracket rotating shaft 311, and a nylon washer 312. The moving seat support rotating shaft 35 penetrates through one end of the moving side swing arm 31 and is hinged with the moving seat support 13; the moving side swing arm rotating shaft 36 penetrates through the other end of the moving side swing arm 31, and two ends of the moving side swing arm rotating shaft 36 are respectively hinged with one end of the two fixed side swing arms 33; the central swing block rotating shaft 37 penetrates through one end of the central swing block 32 and is hinged with the movable seat support 13; the central rotating shaft 38 penetrates through the middle part of the central swinging block 32, and the central rotating shaft 38 is respectively hinged with the middle parts of the two fixed side swinging arms 33; the fork-shaped swing arm rotating shaft 39 penetrates through the other end of the central swing block 32 and is hinged with the fork-shaped swing arm 34; the fixed side swing arm rotating shaft 310 penetrates through one end of the fixed seat support 24, and two sides of the fixed side swing arm rotating shaft 310 are respectively hinged with the other ends of the two fixed side swing arms 33; the fixed seat support rotating shaft 311 penetrates through the other end of the forked swing arm 34 and is hinged with the fixed seat support 24; the hinged parts are separated by a nylon spacer 312.
During installation, the fixed seat 2 is installed on a door frame, the movable seat 1 is installed on a door leaf, and the positions of the hinges are adjusted according to actual installation conditions to adjust the two vertical adjusting cams 234, so that the fixed seat base 23 and the fixed seat base 22 generate relative displacement, and the purpose of adjusting the vertical gap between the door frame and the door leaf is achieved; the front-back adjusting cam 27 is adjusted to drive the fixed seat support 24 to move left and right on the fixed seat base 22, so that the front-back adjustment of the door leaf is realized, and the front-back gap between the door frame and the door leaf is adjusted; and adjusting a left-right adjusting screw 14 of the movable seat to drive the movable seat support 13 to move up and down in the movable seat shell 12, so that left-right adjustment of the door leaf is realized, and a left-right gap between a door frame and the door leaf is adjusted. The utility model arranges the three-dimensional adjusting position on the surface, and the adjustment is convenient and fast; under the condition of common door thickness (40-45 mm), the holes of the door frame and the door leaf can be centered, so that the hole opening difficulty is reduced.
The hinge internal link hinge structure forms two four-bar linkages through the hinge connection among the moving side swing arm 31, the central swing block 32, the fixed side swing arm 33, the forked swing arm 34, the moving seat bracket 13 and the fixed seat bracket 24. Through corresponding calculation design, guarantee to reach corresponding angle of opening the door, close the door back simultaneously, the hinge is closed, and the swing arm can hide inside removing seat casing 12 after having shrunk, can reduce the trompil degree of depth of door frame, has guaranteed the intensity of door frame, has reduced the processingquantity simultaneously.
The joints of the swing arms and the hinge support and the positions of the swing arms are isolated by nylon gaskets 312, so that the wear resistance is improved, and the silencing effect is achieved; the appearance faces at the two ends of the hinge are provided with the cover plates, so that impurities such as dust can be prevented from entering the hinge, and the attractive effect of the hinge can be improved.
The utility model discloses simple structure, low in manufacturing cost, equipment convenience, the manufacturability is strong, convenient to use, the good reliability, industrialization prospect is better.
Claims (9)
1. The utility model provides a thin three-dimensional adjustable hinge of hiding of unilateral, is including fixing removal seat on the door leaf, fixing base and the hinge subassembly of fixing on the door frame, characterized by: the movable seat comprises a movable seat cover plate and a movable seat shell, a movable seat support is arranged in the movable seat shell, shell left and right adjusting holes are formed in two sides of the movable seat shell, support adjusting holes are formed in two sides of the movable seat support, a movable seat left and right adjusting screw is embedded into the shell left and right adjusting holes and the movable seat left and right adjusting holes, and the movable seat shell and the movable seat support are connected; the fixing seat comprises a fixing seat cover plate, a fixing seat base and a fixing seat support, the fixing seat base is embedded in the fixing seat base, a support groove is formed in the middle of the fixing seat base, the fixing seat support is located in the support groove, a support front-back adjusting hole is formed in the middle of the support groove, and adjusting plate embedding holes are formed in two sides of the support groove; the fixing seat base comprises a bottom plate and two adjusting plates, and an adjusting plate adjusting groove is formed in one side of each adjusting plate; the fixed seat bracket is provided with a fixed seat bracket hole; the hinge assembly comprises a movable side swing arm, a central swing block, a fixed side swing arm, a forked swing arm, a movable seat support rotating shaft, a movable side swing arm rotating shaft, a central swing block rotating shaft, a central rotating shaft, a forked swing arm rotating shaft, a fixed side swing arm rotating shaft and a fixed seat support rotating shaft; the rotating shaft of the movable seat support penetrates through one end of the movable side swing arm and is hinged with the movable seat support; the movable side swing arm rotating shaft penetrates through the other end of the movable side swing arm, and two ends of the movable side swing arm rotating shaft are respectively hinged with one ends of the two fixed side swing arms; the central swing block rotating shaft penetrates through one end of the central swing block and is hinged with the movable seat support; the central rotating shaft penetrates through the middle part of the central swinging block and is respectively hinged with the middle parts of the two fixed side swinging arms; the fork-shaped swing arm rotating shaft penetrates through the other end of the central swing block and is hinged with the fork-shaped swing arm; the fixed side swing arm rotating shaft penetrates through one end of the fixed seat support, and two sides of the fixed side swing arm rotating shaft are respectively hinged with the other ends of the two fixed side swing arms; and the rotating shaft of the fixed seat support penetrates through the other end of the forked swing arm and is hinged with the fixed seat support.
2. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: the movable seat cover plate is characterized in that movable seat cover plate buckles are arranged on two sides of the movable seat cover plate, movable seat cover plate embedding holes are formed in two sides of the movable seat shell, and the movable seat cover plate is fixed in the movable seat shell through being embedded into the movable seat cover plate embedding holes.
3. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: the fixing seat cover plate is characterized in that fixing seat cover plate buckles are arranged on two sides of the fixing seat cover plate, fixing seat cover plate embedding holes are formed in two sides of the fixing seat base, and the fixing seat cover plate is fixed on the fixing seat base in the fixing seat cover plate embedding holes through the fixing seat cover plate buckles.
4. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: the fixing seat comprises a fixing seat base and is characterized in that two base screw holes are formed in the middle of the fixing seat base, two support screw holes are formed in the fixing seat support, and two base fixing screws penetrate through the base screw holes, the base screw holes and the support screw holes respectively to connect and fix the fixing seat base, the fixing seat base and the fixing seat support in sequence.
5. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: an upper and a lower adjusting cams are arranged, the bottom of the upper and the lower adjusting cams is embedded into the adjusting groove of the adjusting plate, and the top of the upper and the lower adjusting cams is embedded into the embedding hole of the adjusting plate.
6. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: a front and back adjusting cam is arranged, the bottom of the front and back adjusting cam is embedded into the front and back adjusting groove of the base, and the top of the front and back adjusting cam is embedded into the front and back adjusting hole of the bracket.
7. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: the utility model discloses a fixing base, regulating plate and bottom plate, including fixing base, regulating plate opposite side, base fixed orifices, regulating plate fixed orifices and bottom plate fixed orifices are fixed together to the fixing base both sides are equipped with the base fixed orifices, the bottom plate both sides are equipped with the bottom plate fixed orifices, the regulating plate opposite side is equipped with the regulating plate fixed orifices, establishes two base set screws and passes base fixed.
8. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: two sides of the moving seat shell are provided with shell fixing holes, and two moving seat fixing screws penetrate through the shell fixing holes to fix the moving seat on the door leaf.
9. The single-sided thin three-dimensional adjustable hidden hinge as claimed in claim 1, wherein: the fixing seat is characterized in that base fixing holes are formed in two sides of the fixing seat base, base fixing holes are formed in one side of the adjusting plate, two fixing seat fixing screws penetrate through the two base fixing holes and the base fixing holes respectively, and the fixing seat is fixed on the door frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020001640.5U CN212927453U (en) | 2020-01-02 | 2020-01-02 | Single-side thin type three-dimensional adjustable hidden hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020001640.5U CN212927453U (en) | 2020-01-02 | 2020-01-02 | Single-side thin type three-dimensional adjustable hidden hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212927453U true CN212927453U (en) | 2021-04-09 |
Family
ID=75296065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020001640.5U Active CN212927453U (en) | 2020-01-02 | 2020-01-02 | Single-side thin type three-dimensional adjustable hidden hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212927453U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115883693A (en) * | 2021-09-26 | 2023-03-31 | 华为技术有限公司 | Foldable electronic device and hinge mechanism |
-
2020
- 2020-01-02 CN CN202020001640.5U patent/CN212927453U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115883693A (en) * | 2021-09-26 | 2023-03-31 | 华为技术有限公司 | Foldable electronic device and hinge mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212927453U (en) | Single-side thin type three-dimensional adjustable hidden hinge | |
| JP2002121955A (en) | Invisible hinge | |
| WO2021208090A1 (en) | Gently-positioned shower door sliding mechanism | |
| CN111021859A (en) | Single-side thin type three-dimensional adjustable hidden hinge | |
| CN213015880U (en) | Hinge for door and window | |
| CN112727276A (en) | Self-closing three-dimensional adjustable hidden silent hinge and assembling method thereof | |
| JP3861827B2 (en) | Hinge pedestal height adjustment spacer | |
| CN114233132B (en) | Hinge | |
| CN215718028U (en) | Hidden silence world hinge | |
| CN111321966A (en) | Three-dimensional adjustable hidden hinge | |
| CN212376496U (en) | Three-dimensional adjustable hidden hinge | |
| CN211229967U (en) | Aluminum-clad wood hidden sash sliding limiting structure | |
| CN217735193U (en) | Hidden hinge for door | |
| CN218265529U (en) | Top and bottom hinge for casement door and window | |
| CN219672421U (en) | Hinge for hidden door and indoor door with hinge | |
| CN220790944U (en) | Three-dimensional adjustable hidden hinge | |
| CN220469648U (en) | Adjustable hinge structure | |
| CN220621503U (en) | Hidden hinge | |
| CN217233237U (en) | Hinge part-hidden door leaf | |
| CN218780170U (en) | Novel hinge assembly with good bearing capacity | |
| CN219840515U (en) | Linkage type hardware hinge decorative cover | |
| CN212689809U (en) | Turn-over hinge device | |
| CN219587406U (en) | Heavy stable top and bottom hinge | |
| CN217631914U (en) | Three-dimensional adjustment hidden hinge | |
| CN219795004U (en) | Door hinge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |