CN220769200U - Buffering stable top-bottom hinge - Google Patents
Buffering stable top-bottom hinge Download PDFInfo
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- CN220769200U CN220769200U CN202322137360.3U CN202322137360U CN220769200U CN 220769200 U CN220769200 U CN 220769200U CN 202322137360 U CN202322137360 U CN 202322137360U CN 220769200 U CN220769200 U CN 220769200U
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- 230000003139 buffering effect Effects 0.000 title claims description 7
- 238000009434 installation Methods 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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Abstract
The utility model discloses a buffer stable top-bottom hinge, which comprises a hinge head structure and a hinge body structure, wherein a rotatable door plate opening-closing connecting piece is arranged between the hinge head structure and the hinge body structure, and the hinge body structure comprises a first hinge shell, a second hinge shell, a first bracket piece, a second bracket piece, a bracket seat, a thrust spring structure and a hydraulic buffer structure; the first hinge housing and the second hinge housing are fixed by screws; the end part of the door plate opening and closing connecting piece is rotatably connected between the first bracket piece and the second bracket piece; the thrust spring structure and the hydraulic buffer structure are arranged between the bracket seat and the door plate opening and closing connecting piece. The utility model has reasonable structure arrangement, and the support seat is matched with the thrust spring structure and the hydraulic buffer structure, so that the switch buffer can be effectively realized, and the support seat can improve the convenience of installation and is beneficial to improving the stability of installation.
Description
Technical Field
The utility model belongs to the technical field of hinges, and particularly relates to a top-bottom hinge with stable buffering.
Background
The top-bottom hinge is one of hinges, the shell and the movable part of the existing market products are made of zinc alloy, oxidation is easy to generate when the existing market products are contacted with air in the practical application process, the existing market products become fragile and easy to break for a long time, the problem that a door plate falls off under the condition of breakage, and swing is easy to occur, so that the technical problem that the door plate cannot be closed due to loosening is easy to occur;
the Chinese patent publication number is: CN217380166U, patent name: a top-bottom hinge with an adjustable opening and closing force function aims to solve the problems that an existing top-bottom hinge is too fast in closing process and lacks buffering; the key points of the technical scheme are as follows: the hinge box comprises an upper shell and a lower shell, wherein the upper shell and the lower shell enclose a mounting cavity, and an opening is formed in the mounting cavity; the hinge cup is internally provided with a mounting piece; one end of the driving mechanism is rotatably arranged in the hinge cup, the other end of the driving mechanism passes through the opening and is fixed in the mounting cavity, and the driving mechanism can rotate around the fixing part; the opening and closing mechanism is arranged in the mounting cavity and is abutted with the driving mechanism; and the buffer mechanism is arranged in the mounting cavity and connected with the driving mechanism and used for providing buffer in the opening and closing process of the hinge cup.
Although the utility model can satisfy the user demand of general condition, in practical application process, because the hinge is when closing, and its connection piece is rotatory closed, and when closed to about 30-45 degrees, it can produce a side resistance, but because its buffer gear is fixed setting more to in the opening process, buffer gear can receive a side resistance, thereby causes the wearing and tearing of hydraulic pressure bracing piece head to become the phenomenon of slope or shorten easily, also causes buffer gear to damage simultaneously easily, influences use stationarity and reliability, so suitability and practicality are limited.
Disclosure of Invention
The utility model aims to provide a buffer stable top-bottom hinge which is reasonable in structural arrangement and beneficial to improving use stability.
The technical proposal for realizing the aim of the utility model is a top-bottom hinge with stable buffering, which comprises a hinge head structure and a hinge body structure, a rotatable door plate opening and closing connecting piece is arranged between the hinge head structure and the hinge body structure,
the hinge body structure comprises a first hinge shell, a second hinge shell, a first bracket piece, a second bracket piece, a bracket seat, a thrust spring structure and a hydraulic buffer structure;
the first hinge shell and the second hinge shell are fixed through screws, the bracket seat is arranged between the first hinge shell and the second hinge shell, and the end parts of the first bracket sheet and the second bracket sheet are arranged on the bracket seat;
the end part of the door plate opening and closing connecting piece is rotatably connected between the first bracket piece and the second bracket piece;
the thrust spring structure and the hydraulic buffer structure are arranged between the bracket seat and the door plate opening and closing connecting piece.
Further preferred are: the hydraulic buffer structure comprises a hydraulic buffer and a buffer movable protection seat;
the buffer movable protection seat is fixed between the first bracket piece and the second bracket piece;
the piston shaft of the hydraulic buffer is abutted on the bracket seat, and the tail end of the cylinder body of the hydraulic buffer is abutted on the end part of the door plate opening and closing connecting piece;
the buffer movable protection seat is provided with a guide groove; the cylinder body of the hydraulic buffer is slidably arranged in the guide groove.
Further preferred are: limiting bosses are arranged on the top surface and the bottom surface of the support seat;
the first bracket piece and the second bracket piece are respectively provided with a strip-shaped limiting groove;
the first bracket piece and the second bracket piece are respectively attached to the top surface and the bottom surface of the bracket seat, and the limit boss is movably arranged in the strip-shaped limit groove;
when the door plate opening and closing connecting piece is opened, the first support piece and the second support piece are driven to integrally translate, the thrust spring structure and the hydraulic buffer are driven to act, and the translation limiting is carried out through the limiting boss.
Further preferred are: the thrust spring structure comprises a spring, a thrust rod and a spring swinging support;
the spring is sleeved on the thrust rod, and the spring swinging support is sleeved on the end part of the thrust rod, which is close to the support seat;
the thrust rod is abutted on the door plate opening and closing connecting piece, and the spring swing support is abutted on the support seat.
Further preferred are: the door plate opening and closing connecting piece comprises a first connecting piece and a second connecting piece;
one end of the first connecting piece is rotatably connected to the tops of the first bracket piece and the second bracket piece through a rotating shaft;
the bottom of the second connecting piece is provided with an abutting boss and an abutting convex strip;
the lower part of the second connecting piece is rotatably connected to the middle parts of the first bracket piece and the second bracket piece through a pin shaft, the abutting boss abuts against the end part of the thrust rod, and the abutting convex strip abuts against the cylinder bottom of the hydraulic buffer.
Further preferred are: the top of the first hinge housing is provided with a door back clearance adjusting screw connected with the bracket seat.
Further preferred are: the tops of the first bracket piece and the second bracket piece are provided with kidney-shaped groove adjusting pieces, and two ends of the kidney-shaped groove of each kidney-shaped groove adjusting piece extend to the first bracket piece and the second bracket piece respectively;
the top of the first hinge shell is provided with a left-right adjusting eccentric screw connected with the kidney-shaped groove adjusting piece;
the left and right adjusting eccentric screw rotates to enable the first bracket piece and the second bracket piece to integrally move left and right.
Further preferred are: the hinge head structure comprises a hinge head shell, a hinge head connecting seat, an up-and-down adjusting screw clamping seat, an up-and-down adjusting screw wheel, a fastening screw and two movable shafts;
the first connecting piece and the second connecting piece are respectively and rotatably connected to the hinge head connecting seat through movable shafts;
the hinge head connecting seat is fixed in the hinge head shell through a movable shaft and a fastening screw;
the up-down adjusting screw clamping seat is arranged on the hinge connecting seat, the up-down adjusting screw wheel is arranged on the hinge head shell, and the up-down adjusting screw wheel is in screw connection with the up-down adjusting screw clamping seat.
Further preferred are: the wall thickness of the tail end of the cylinder body of the hydraulic buffer is larger than that of the side wall of the cylinder body.
The utility model has the positive effects that: the utility model has reasonable structure arrangement, and the support seat is matched with the thrust spring structure and the hydraulic buffer structure, so that the switch buffer can be effectively realized, and the support seat can improve the convenience of installation and is beneficial to improving the stability of installation;
meanwhile, the hydraulic buffer structure comprises a hydraulic buffer and a buffer movable protection seat, a guide groove is formed in the buffer movable protection seat, the translational stability of the hydraulic buffer can be improved through guiding, inclination is prevented, when the hydraulic buffer is used, the door plate opening and closing connecting piece is abutted to the cylinder bottom of the hydraulic buffer, the piston shaft of the hydraulic buffer can be effectively prevented from being worn by force and deformed by lateral force, and the service life and the use stability of the hydraulic buffer can be prolonged.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings, in which:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the second hinge housing of the present utility model with the second hinge housing removed;
FIG. 3 is a schematic diagram of an explosive structure according to the present utility model;
fig. 4 is a schematic structural diagram of a bracket base in the present utility model.
Reference numerals: the hinge head structure 1, a hinge head shell 11, a hinge head connecting seat 12, an up-and-down adjusting screw clamping seat 13, an up-and-down adjusting screw wheel 14, a fastening screw 15 and a movable shaft 16;
the hinge body structure 2, the first hinge housing 21, the second hinge housing 22, the first bracket piece 23, the second bracket piece 24, the bracket seat 25, the thrust spring structure 26, the spring 261, the thrust rod 262, the spring swing support 263, the hydraulic buffer structure 27, the hydraulic buffer 271, the buffer movable protection seat 272 and the guide groove 273;
the door panel opening and closing connector 3, the first connector 31, the second connector 32, the abutting boss 33 and the abutting convex strip 34;
the device comprises a limiting boss 4, a bar-shaped limiting groove 5, a door back gap adjusting screw 6, a kidney-shaped groove adjusting piece 7 and a left-right adjusting eccentric screw 8.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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.
Examples
Referring to fig. 1 to 4, a stable buffering top-bottom hinge includes a hinge head structure 1 and a hinge body structure 2, a rotatable door plate opening and closing connector 3 is disposed between the hinge head structure 1 and the hinge body structure 2, and in this embodiment, the installation mode is a conventional installation mode in the prior art, so it is not described in detail.
In the practical application process, the hinge body structure 2 comprises a first hinge housing 21, a second hinge housing 22, a first bracket piece 23, a second bracket piece 24, a bracket seat 25, a thrust spring structure 26 and a hydraulic buffer structure 27; in this embodiment, the first hinge housing 21 and the second hinge housing 22 are metal structures, and the first hinge housing 21 and the second hinge housing 22 are fixed by screws, and the support seat may be a metal structure or a plastic structure, and the first support sheet and the second support sheet are metal structures, and have a thinner thickness, and mainly act when the door panel opening and closing connector acts, and are buffered by the abutting thrust spring structure and the hydraulic buffer structure, so as to ensure the stability of use.
In the practical application process, the bracket seat 25 is arranged between the first hinge housing 21 and the second hinge housing 22, and the ends of the first bracket piece 23 and the second bracket piece 24 are arranged on the bracket seat 25; the end part of the door plate opening and closing connecting piece 3 is rotatably connected between the first bracket piece 23 and the second bracket piece 24; the thrust spring structure 26 and the hydraulic buffer structure 27 are arranged between the bracket seat 25 and the door panel opening and closing connector 3.
In a practical application process, the hydraulic buffer structure 27 includes a hydraulic buffer 271 and a buffer movable protection seat 272; the buffer movable protection seat 272 is fixed between the first bracket piece 23 and the second bracket piece 24; the piston shaft of the hydraulic buffer 271 is abutted against the bracket seat 25, and the tail end of the cylinder body of the hydraulic buffer 271 is abutted against the end part of the door plate opening and closing connector 3; the buffer movable protection seat 272 is provided with a guide groove 273; the cylinder of the hydraulic damper 271 is slidably disposed in the guide groove 273. In this embodiment, the bottom of the hydraulic buffer abuts against the door plate opening and closing connector, and in the practical application process, the wall thickness of the tail end of the cylinder body of the hydraulic buffer 271 is greater than the wall thickness of the side wall of the cylinder body. The wall thickness of the tail part is increased, so that the situation of damage caused by pushing can be avoided, and the guide groove is formed in the buffer activity guarantee seat, so that the cylinder body of the hydraulic buffer can be prevented from inclining or shifting when moving, the situation of oil leakage caused by damage or deformation of the piston shaft of the hydraulic buffer can be avoided, and the use stability and reliability of the hydraulic buffer can be improved.
In order to improve the installation convenience of the first bracket piece and the second bracket piece, the top surface and the bottom surface of the bracket seat 25 are provided with limiting bosses 4; the first bracket piece 23 and the second bracket piece 24 are provided with strip-shaped limiting grooves 5; the first bracket piece 23 and the second bracket piece 24 are respectively attached to the top surface and the bottom surface of the bracket seat 25, and the limit boss 4 is movably arranged in the strip-shaped limit groove 5;
when in use, the door plate opening and closing connecting piece 3 drives the first bracket piece 23 and the second bracket piece 24 to integrally translate when being opened, and drives the thrust spring structure 26 and the hydraulic buffer 271 to act, and the translation is limited through the limiting boss 4. When the device is used, the device is limited through the strip-shaped limiting grooves and the limiting bosses, so that damage is avoided.
In the practical application process, the thrust spring structure 26 comprises a spring 261, a thrust rod 262 and a spring swinging bracket 263; the spring 261 is sleeved on the thrust rod 262, and the spring swinging support 263 is sleeved on the end part of the thrust rod 262, which is close to the bracket seat 25; the thrust rod 262 is abutted against the door plate opening and closing connector 3, and the spring swing support 263 is abutted against the bracket seat 25. The spring swing support is mainly used for supporting the spring so as to ensure that the spring is stable in position during compression and is not easy to deform or damage.
In the practical application process, the door plate opening and closing connecting piece 3 comprises a first connecting piece 31 and a second connecting piece 32; one end of the first connecting member 31 is rotatably connected to the top of the first and second bracket pieces 23 and 24 through a rotation shaft; the bottom of the second connecting piece 32 is provided with an abutting boss 33 and an abutting convex strip 34; in use, the lower part of the second connecting piece 32 is rotatably connected to the middle parts of the first bracket piece 23 and the second bracket piece 24 through a pin, the abutment boss 33 abuts against the end part of the thrust rod 262, and the abutment raised strip 34 abuts against the cylinder bottom of the hydraulic buffer 271. The structure is a conventional structure in the prior art, and the first connecting piece and the second connecting piece are metal structures, so that the integral strength can be ensured, and the structure is not easy to deform.
The top of the first hinge housing 21 is provided with a door back clearance adjusting screw 6 connected with the bracket seat 25. The tops of the first bracket piece 23 and the second bracket piece 24 are provided with a kidney-shaped groove adjusting piece 7, and two ends of a kidney-shaped groove of the kidney-shaped groove adjusting piece 7 extend to the first bracket piece 23 and the second bracket piece 24 respectively; the top of the first hinge housing 21 is provided with a left and right adjusting eccentric screw 8 connected with the kidney-shaped groove adjusting piece 7; the left-right adjustment eccentric screw 8 rotates to move the first bracket piece 23 and the second bracket piece 24 in the left-right direction as a whole. Through the structure, the installation and adjustment can be realized, so that the application range of the device is improved.
Meanwhile, in the practical application process, the hinge head structure 1 comprises a hinge head shell 11, a hinge head connecting seat 12, an up-and-down adjusting screw clamping seat 13, an up-and-down adjusting screw wheel 14, a fastening screw 15 and two movable shafts 16; the first connecting piece 31 and the second connecting piece 32 are respectively rotatably connected to the hinge head connecting seat 12 through the movable shaft 16; the hinge head connecting seat 12 is fixed in the hinge head shell 11 through a movable shaft 16 and a fastening screw 15; the up-down adjusting screw clamping seat 13 is arranged on the hinge connecting seat, the up-down adjusting screw wheel 14 is arranged on the hinge head shell 11, and the up-down adjusting screw wheel 14 is in screw connection with the up-down adjusting screw clamping seat 13.
The screw clamping seat is adjusted up and down through the cooperation of the up-down adjusting screw wheel, so that the up-down adjustment of the hinge connecting seat can be realized, different installation requirements can be met, and the application range of the hinge connecting seat is improved.
The utility model has the positive effects that: the utility model has reasonable structure arrangement, and the support seat is matched with the thrust spring structure and the hydraulic buffer structure, so that the switch buffer can be effectively realized, and the support seat can improve the convenience of installation and is beneficial to improving the stability of installation;
meanwhile, the hydraulic buffer structure comprises a hydraulic buffer and a buffer movable protection seat, a guide groove is formed in the buffer movable protection seat, the translational stability of the hydraulic buffer can be improved through guiding, inclination is prevented, when the hydraulic buffer is used, the door plate opening and closing connecting piece is abutted to the cylinder bottom of the hydraulic buffer, the piston shaft of the hydraulic buffer can be effectively prevented from being worn by force and deformed by lateral force, and the service life and the use stability of the hydraulic buffer can be prolonged.
The standard components used in this embodiment may be purchased directly from the market, but the nonstandard structural components described in the specification may also be obtained directly by unambiguous processing according to the common general knowledge in the prior art, and meanwhile, the connection manner of each component adopts the conventional means mature in the prior art, and the machinery, the components and the equipment all adopt the conventional types in the prior art, so that no specific description will be made here.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While those obvious variations or modifications which come within the spirit of the utility model remain within the scope of the utility model.
Claims (9)
1. The utility model provides a stable world hinge of buffering, includes hinge head structure (1) and hinge body structure (2), be provided with rotatable door plant connecting piece (3) that opens and shuts between hinge head structure (1) and hinge body structure (2), its characterized in that:
the hinge body structure (2) comprises a first hinge shell (21), a second hinge shell (22), a first bracket piece (23), a second bracket piece (24), a bracket seat (25), a thrust spring structure (26) and a hydraulic buffer structure (27);
the first hinge housing (21) and the second hinge housing (22) are fixed through screws, the bracket seat (25) is arranged between the first hinge housing (21) and the second hinge housing (22), and the end parts of the first bracket sheet (23) and the second bracket sheet (24) are arranged on the bracket seat (25);
the end part of the door plate opening and closing connecting piece (3) is rotatably connected between the first bracket piece (23) and the second bracket piece (24);
the thrust spring structure (26) and the hydraulic buffer structure (27) are arranged between the bracket seat (25) and the door plate opening and closing connecting piece (3).
2. The cushioned stable top-bottom hinge of claim 1 wherein: the hydraulic buffer structure (27) comprises a hydraulic buffer (271) and a buffer movable protection seat (272);
the buffer movable protection seat (272) is fixed between the first bracket piece (23) and the second bracket piece (24);
the piston shaft of the hydraulic buffer (271) is abutted against the bracket seat (25), and the tail end of the cylinder body of the hydraulic buffer (271) is abutted against the end part of the door plate opening and closing connecting piece (3);
a guide groove (273) is formed in the buffer movable protection seat (272); the cylinder body of the hydraulic damper (271) is slidably disposed in the guide groove (273).
3. A cushioning stable top and bottom hinge as set forth in claim 2 wherein: limiting bosses (4) are arranged on the top surface and the bottom surface of the bracket seat (25);
the first bracket piece (23) and the second bracket piece (24) are provided with strip-shaped limiting grooves (5);
the first bracket piece (23) and the second bracket piece (24) are respectively attached to the top surface and the bottom surface of the bracket seat (25), and the limit boss (4) is movably arranged in the strip-shaped limit groove (5);
when the door plate opening and closing connecting piece (3) is opened, the first bracket piece (23) and the second bracket piece (24) are driven to integrally translate, the thrust spring structure (26) and the hydraulic buffer (271) are driven to act, and the translation is limited through the limiting boss (4).
4. A cushioned stable top and bottom hinge as set forth in claim 3 wherein: the thrust spring structure (26) comprises a spring (261), a thrust rod (262) and a spring swinging bracket (263);
the spring (261) is sleeved on the thrust rod (262), and the spring swinging support (263) is sleeved on the end part of the thrust rod (262) close to the support seat (25);
the thrust rod (262) is abutted on the door plate opening and closing connecting piece (3) and the spring swinging support (263) is abutted on the support seat (25).
5. The cushioned stable top-bottom hinge of claim 4 wherein: the door plate opening and closing connecting piece (3) comprises a first connecting piece (31) and a second connecting piece (32);
one end of the first connecting piece (31) is rotatably connected to the tops of the first bracket piece (23) and the second bracket piece (24) through a rotating shaft;
the bottom of the second connecting piece (32) is provided with an abutting boss (33) and an abutting convex strip (34);
the lower part of the second connecting piece (32) is rotatably connected to the middle parts of the first bracket piece (23) and the second bracket piece (24) through a pin shaft, the abutting boss (33) abuts against the end part of the thrust rod (262), and the abutting convex strip (34) abuts against the cylinder bottom of the hydraulic buffer (271).
6. A cushioning stable top and bottom hinge according to any one of claims 1-4, wherein: the top of the first hinge housing (21) is provided with a back clearance adjusting screw (6) connected with the bracket seat (25).
7. The cushioned stable top-bottom hinge of claim 6 wherein: the tops of the first bracket piece (23) and the second bracket piece (24) are provided with kidney-shaped groove adjusting pieces (7), and two ends of the kidney-shaped groove of each kidney-shaped groove adjusting piece (7) extend to the first bracket piece (23) and the second bracket piece (24) respectively;
the top of the first hinge shell (21) is provided with a left-right adjusting eccentric screw (8) connected with the kidney-shaped groove adjusting piece (7);
the left and right adjusting eccentric screw (8) rotates to enable the first bracket piece (23) and the second bracket piece (24) to move left and right integrally.
8. The cushion-stabilized top and bottom hinge of claim 5, wherein: the hinge head structure (1) comprises a hinge head shell (11), a hinge head connecting seat (12), an up-and-down adjusting screw clamping seat (13), an up-and-down adjusting screw wheel (14), a fastening screw (15) and two movable shafts (16);
the first connecting piece (31) and the second connecting piece (32) are respectively rotatably connected to the hinge head connecting seat (12) through a movable shaft (16);
the hinge head connecting seat (12) is fixed in the hinge head shell (11) through a movable shaft (16) and a fastening screw (15);
the up-down adjusting screw clamping seat (13) is arranged on the hinge connecting seat, the up-down adjusting screw wheel (14) is arranged on the hinge head shell (11), and the up-down adjusting screw wheel (14) is in screw connection with the up-down adjusting screw clamping seat (13).
9. A cushioning stable top and bottom hinge as set forth in claim 2 wherein: the wall thickness of the tail end of the cylinder body of the hydraulic buffer (271) is larger than that of the side wall of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322137360.3U CN220769200U (en) | 2023-08-09 | 2023-08-09 | Buffering stable top-bottom hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322137360.3U CN220769200U (en) | 2023-08-09 | 2023-08-09 | Buffering stable top-bottom hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769200U true CN220769200U (en) | 2024-04-12 |
Family
ID=90617145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322137360.3U Active CN220769200U (en) | 2023-08-09 | 2023-08-09 | Buffering stable top-bottom hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769200U (en) |
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2023
- 2023-08-09 CN CN202322137360.3U patent/CN220769200U/en active Active
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