CN220815311U - Closed door frame top and bottom hinge - Google Patents
Closed door frame top and bottom hinge Download PDFInfo
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- CN220815311U CN220815311U CN202322501845.6U CN202322501845U CN220815311U CN 220815311 U CN220815311 U CN 220815311U CN 202322501845 U CN202322501845 U CN 202322501845U CN 220815311 U CN220815311 U CN 220815311U
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- 238000007789 sealing Methods 0.000 claims abstract description 76
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000009434 installation Methods 0.000 claims description 15
- 239000013585 weight reducing agent Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a closed door frame top-bottom hinge, which relates to the technical field of door frame top-bottom hinges and comprises a door frame top-bottom hinge main body, a plane thrust cylindrical roller bearing, a deep groove ball bearing, a bottom sealing piece and a supporting sealing seat, wherein the door frame top-bottom hinge main body comprises a hinge sleeve, a side joint part, a rectangular mounting part, an annular supporting step and an annular clamping groove; the plane thrust cylindrical roller bearing is arranged in a door frame top-bottom hinged bearing groove at the upper side; the deep groove ball bearing is arranged in the upper and lower hinge bearing groove of the lower door frame. The closed door frame is hinged from top to bottom, the hinge shaft core of the door leaf and the thrust ball bearing can be prevented from separating from the hinge bearing groove of the door frame, and the use stability is high.
Description
Technical Field
The utility model relates to the technical field of door frame top-bottom hinges, in particular to a closed door frame top-bottom hinge.
Background
When the door leaves of the door are opened, the force applied to the door frame hinge is usually in two directions, namely axial force and radial force. The patent with the publication number CN209413612U discloses a quick-mounting self-lubricating top-bottom hinge, which uses a thrust ball bearing and a deep groove ball bearing combination to bear the axial force and the radial force when a door leaf is opened. The vertical hinge realizes a rotating function through the bearing structure, has a good rotating mute effect, improves the defect of falling of the door leaf, and prolongs the service life. In order to realize reasonable bearing combination stress, the installation mode is that the thrust ball bearing is arranged at the upper part and the deep groove ball bearing is arranged at the lower part, so that the thrust ball bearing consisting of the shaft collar, the retainer and the gasket is easy to separate from the door frame hinge main body, and the problem is easy to occur during transportation and installation. After the user installs the household door with the all-bearing top-bottom hinge, if foreign matters exist at the bottom of the door leaf to jack up the door leaf when the door leaf is opened, the door leaf hinge shaft core possibly drives the thrust ball bearing to separate from the door frame hinge bearing groove, so that the whole door leaf and the door frame are separated, and serious consequences of the door leaf tilting occur.
Disclosure of utility model
The utility model aims to overcome the prior defects and provide a closed door frame top-bottom hinge, wherein two door frame top-bottom hinge bearing grooves are symmetrically arranged, an annular supporting step is reserved in the middle, a deep groove ball bearing which bears radial force is arranged in the lower door frame top-bottom hinge bearing groove and then is sealed by using a bottom sealing plate, a plane thrust cylindrical roller bearing which can bear axial force is arranged in the upper door frame top-bottom hinge bearing groove, then a supporting sealing seat with a shaft steel wire retainer ring is used for sealing a mouth part, after the door frame top-bottom hinge is assembled, all bearings are sealed inside the door frame top-bottom hinge bearing groove, the phenomenon that accessories are separated from the door frame hinge can not occur under any conditions when the door frame top-bottom hinge is installed, transported and used by a user, and when the bearings need to be replaced, a tool can be used for prying the supporting sealing seat and the bottom sealing piece to replace, so that the door leaf hinge shaft core and the thrust ball bearing can be prevented from separating from the door frame hinge bearing groove, the use stability is high, and the problems in the background technology can be effectively solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a closed door frame top and bottom hinge comprising:
The door frame top-bottom hinge main body comprises a hinge sleeve, a side joint part, a rectangular installation part, an annular supporting step and an annular clamping groove, one side of the hinge sleeve is fixedly connected with one end of the rectangular installation part through the side joint part, the annular supporting step is fixedly connected with the middle part in the hinge sleeve, the annular supporting step divides the inside of the hinge sleeve into two door frame top-bottom hinge bearing grooves which are vertically symmetrical, and the annular clamping groove is respectively arranged at the upper end and the lower end of the inner side of the hinge sleeve;
a plane thrust cylindrical roller bearing is arranged in a top-bottom hinged bearing groove of the upper door frame;
the deep groove ball bearing is arranged in the top-bottom hinge bearing groove of the lower door frame;
the bottom sealing piece is arranged at the bottom of the inner side of the hinge sleeve;
the supporting sealing seat is arranged at the top of the hinge sleeve.
The two door frame top-bottom hinged bearing grooves which are vertically symmetrical in the hinged sleeve are respectively used for installing the plane thrust cylindrical roller bearing and the deep groove ball bearing, the plane thrust cylindrical roller bearing can bear the axial force of the door leaf hinged shaft core, the deep groove ball bearing can bear the radial force of the door leaf hinged shaft core, the side joint part and the rectangular installation part are used for installing the fixed hinged sleeve, the annular clamping concave groove is used for fixing the bottom sealing piece and supporting the sealing seat, the two annular clamping concave grooves are symmetrically arranged up and down, the door frame top-bottom hinged can be used by the two annular clamping concave grooves, the door leaf left opening and the door leaf right opening can both use the same door frame top-bottom hinged, the production cost is saved, the bottom sealing piece seals the bottom of the deep groove ball bearing, the supporting sealing seat seals the top of the plane thrust cylindrical roller bearing, and the deep groove ball bearing are prevented from separating from the door frame top-bottom hinged bearing groove.
Further, the door frame top and bottom hinge main body further comprises a weight reduction groove, and the upper side and the lower side of the side joint part are symmetrically provided with the weight reduction groove. The weight-reducing grooves can reduce the weight of the side joint parts, and meanwhile, the structural strength of the side joint parts is not affected.
Furthermore, the door frame top and bottom hinge main body further comprises a rectangular mounting through groove, the rectangular mounting through groove is formed in the middle of the rectangular mounting part, and the rectangular mounting part can be mounted and fixed by means of an external bolt penetrating through the rectangular mounting through groove.
Further, the bottom sealing piece comprises a circular sheet body and an annular clamping step, the circular sheet body is arranged at the bottom of the inner side of the hinge sleeve, the annular clamping step is integrally formed on the outer periphery of the top of the circular sheet body, and the annular clamping step is clamped with the annular clamping groove at the bottom of the inner side of the hinge sleeve. The circular lamellar body is fixed in the bottom of hinge cover through the joint in annular joint step and the concave groove of bottom annular screens, seals the bottom of hinge cover, avoids deep groove ball bearing to drop from the door frame world hinge bearing groove of bottom, need pry circular lamellar body and annular joint step open when dismantling and changing deep groove ball bearing.
Further, the support seal seat comprises a seal sleeve and an annular mounting groove, the seal sleeve is sleeved on the inner side of the top of the hinge sleeve, the annular mounting groove is formed in the middle of the outer periphery side of the seal sleeve, a shaft steel wire check ring is arranged in the annular mounting groove, and the shaft steel wire check ring is clamped with the annular clamping groove at the top of the inner side of the hinge sleeve. The annular mounting groove is used for limiting and mounting the steel wire check ring for the shaft, and the sealing sleeve can be clamped and fixed at the top of the inner side of the hinge sleeve by means of the steel wire check ring for the shaft, so that the planar thrust cylindrical roller bearing is limited, the planar thrust cylindrical roller bearing is prevented from falling off from the top-bottom hinge bearing groove of the upper door frame, the inner side of the sealing sleeve is used for penetrating through the hinge shaft core of the door leaf, and the sealing sleeve needs to be pried out when the sealing seat is detached and supported.
Further, the supporting sealing seat also comprises a sealing baffle ring, the sealing baffle ring is integrally formed on the periphery side of the top of the sealing sleeve, the lower side of the sealing baffle ring butts against the top surface of the hinge sleeve, the sealing baffle ring can block the gap between the sealing sleeve and the hinge sleeve, the sealing performance of the inside is kept, and the sealing sleeve is conveniently pried out through the sealing baffle ring.
Compared with the prior art, the utility model has the beneficial effects that: the closed door frame top-bottom hinge has the following advantages:
1. Arranging two door frame top-bottom hinge bearing grooves symmetrically, leaving annular supporting steps in the middle, mounting a deep groove ball bearing for bearing radial force on the lower door frame top-bottom hinge bearing groove, sealing by using a bottom sealing plate, mounting a plane thrust cylindrical roller bearing for bearing axial force on the upper door frame top-bottom hinge bearing groove, and sealing by using a supporting sealing seat with a shaft steel wire retainer ring at the mouth;
2. After the door frame top-bottom hinge is assembled, all bearings are sealed in the door frame top-bottom hinge bearing grooves, the phenomenon that accessories are separated from the door frame hinge can not occur any more in the process of installation, transportation and use by a user, when the bearings need to be replaced, a tool can be used for prying the supporting sealing seat and the bottom sealing piece for replacement, the door leaf hinge shaft core and the thrust ball bearing can be prevented from being separated from the door frame hinge bearing grooves, and the use stability is high;
3. The annular clamping grooves are used for fixing the bottom sealing plate and supporting the sealing seat, the two annular clamping grooves are arranged symmetrically up and down, the door frame top-bottom hinge can be used on the front side and the back side through the structure, the door leaf left opening and the door leaf right opening can both use the same door frame top-bottom hinge, and production cost is saved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic side view of the present utility model;
FIG. 3 is a schematic top view of the present utility model;
FIG. 4 is a schematic diagram showing a cross-sectional structure of the structure A in FIG. 3 according to the present utility model;
FIG. 5 is a schematic view showing the structure of the cross section of the top-bottom hinge body of the door frame at A in FIG. 3;
FIG. 6 is a schematic cross-sectional view of a seal holder according to the present utility model.
In the figure: 1 door frame top and bottom hinge main body, 11 hinge sleeve, 12 side joint part, 13 weight reducing groove, 14 rectangular installation part, 15 rectangular installation through groove, 16 annular supporting step, 17 annular clamping concave groove, 2 plane thrust cylindrical roller bearing the sealing device comprises a deep groove ball bearing 3, a sealing piece 4 at the bottom, a circular sheet body 41, an annular clamping step 42, a supporting sealing seat 5, a sealing sleeve 51, a sealing baffle ring 52, an annular mounting groove 53 and a steel wire retainer ring for 6 shafts.
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.
Referring to fig. 1 to 6, the present utility model provides a technical solution: a closed door frame top-bottom hinge comprises a door frame top-bottom hinge main body 1, a plane thrust cylindrical roller bearing 2, a deep groove ball bearing 3, a bottom sealing piece 4 and a supporting sealing seat 5;
The door frame top-bottom hinge main body 1 comprises a hinge sleeve 11, a side joint part 12, a rectangular mounting part 14, an annular supporting step 16 and an annular clamping groove 17, one side of the hinge sleeve 11 is fixedly connected with one end of the rectangular mounting part 14 through the side joint part 12, the annular supporting step 16 is fixedly connected with the middle part in the hinge sleeve 11, the thickness of the annular supporting step 16 is 4 mm, the annular supporting step 16 divides the inside of the hinge sleeve 11 into two door frame top-bottom hinge bearing grooves which are vertically symmetrical, and the annular clamping grooves 17 are respectively formed in the upper end and the lower end of the inner side of the hinge sleeve 11;
Wherein the height of the annular clamping groove 17 is 2mm, and the depth of the annular clamping groove 17 is 0.8 mm;
The door frame top and bottom hinge main body 1 also comprises a weight reduction groove 13, and the upper side and the lower side of the side joint part 12 are symmetrically provided with the weight reduction groove 13. The weight-reducing grooves 13 can reduce the weight of the side joint 12 without affecting the structural strength of the side joint 12.
The door frame top and bottom hinge main body 1 further comprises a rectangular mounting through groove 15, the rectangular mounting through groove 15 is formed in the middle of the rectangular mounting portion 14, and the rectangular mounting portion 14 can be mounted and fixed by means of an external bolt penetrating through the rectangular mounting through groove 15.
The plane thrust cylindrical roller bearing 2 is arranged in a door frame top-bottom hinged bearing groove at the upper side, and the plane thrust cylindrical roller bearing 2 adopts a 4mm plane thrust cylindrical roller bearing;
The deep groove ball bearing 3 is arranged in a top-bottom hinge bearing groove of the lower door frame;
The bottom sealing piece 4 is arranged at the bottom of the inner side of the hinge sleeve 11;
the supporting seal seat 5 is arranged on the top of the hinge sleeve 11.
When the hinge sleeve is used, two door frame top-bottom hinge bearing grooves which are vertically symmetrical in the hinge sleeve 11 are respectively used for installing the plane thrust cylindrical roller bearing 2 and the deep groove ball bearing 3, the plane thrust cylindrical roller bearing 2 can bear the axial force of a door leaf hinge shaft core, the deep groove ball bearing 3 bears the radial force of the door leaf hinge shaft core, the side joint part 12 and the rectangular installation part 14 are used for installing the fixed hinge sleeve 11, the annular clamping groove 17 is used for fixing the bottom sealing plate 4 and the supporting sealing seat 5, the two annular clamping grooves 17 are vertically symmetrically arranged, the structure enables the door frame top-bottom hinge to be used in front and back, the door leaf left opening and the door leaf right opening can use the same door frame top-bottom hinge, the production cost is saved, the bottom sealing plate 4 seals the bottom of the deep groove ball bearing 3, the supporting sealing seat 5 seals the top of the plane thrust cylindrical roller bearing 2, and the deep groove ball bearing 3 are prevented from being separated from the door frame top-bottom hinge bearing groove.
In a second embodiment, referring to fig. 3 to 4, the present utility model provides a technical solution: the embodiment is a further explanation of the structure of the first embodiment;
The bottom sealing piece 4 comprises a circular sheet body 41 and an annular clamping step 42, the circular sheet body 41 is arranged at the inner bottom of the hinge sleeve 11, the annular clamping step 42 is integrally formed and connected with the outer periphery of the top of the circular sheet body 41, and the annular clamping step 42 is clamped with the annular clamping groove 17 at the inner bottom of the hinge sleeve 11.
Wherein the circular sheet 41 is made of stainless steel 304 material with the thickness of 1.8 mm;
When the hinge sleeve is used, the circular sheet body 41 is fixed at the bottom of the hinge sleeve 11 through the clamping connection of the annular clamping connection step 42 and the annular clamping position groove 17 at the bottom, the bottom of the hinge sleeve 11 is sealed, the deep groove ball bearing 3 is prevented from falling off from a door frame top-bottom hinge bearing groove at the bottom, and the circular sheet body 41 and the annular clamping connection step 42 are required to be pried open when the deep groove ball bearing 3 is disassembled and replaced.
In a third embodiment, please refer to fig. 3, 4 and 6, the present utility model provides a technical solution: the embodiment is a further explanation of the structure of the second embodiment;
The supporting sealing seat 5 comprises a sealing sleeve 51 and an annular mounting groove 53, the sealing sleeve 51 is sleeved on the inner side of the top of the hinge sleeve 11, the annular mounting groove 53 is formed in the middle of the outer periphery side of the sealing sleeve 51, a shaft steel wire check ring 6 is arranged in the annular mounting groove 53, and the shaft steel wire check ring 6 is clamped with the annular clamping groove 17 on the inner side top of the hinge sleeve 11.
The inner diameter of the sealing sleeve 51, the inner diameter of the plane thrust cylindrical roller bearing 2, the inner diameter of the deep groove ball bearing 3 and the inner diameter of the annular supporting step 16 are all the same, and are used for adapting to a door leaf hinge shaft core.
When the sealing seat 5 is used, the annular mounting groove 53 is used for limiting and mounting the steel wire retainer ring 6 for the shaft, the sealing sleeve 51 can be clamped and fixed at the top of the inner side of the hinge sleeve 11 by means of the steel wire retainer ring 6 for the shaft, so that the plane thrust cylindrical roller bearing 2 is limited, the plane thrust cylindrical roller bearing 2 is prevented from falling off from the upper door frame top-bottom hinge bearing groove, the inner side of the sealing sleeve 51 is used for penetrating through the door leaf hinge shaft core, and the sealing sleeve 51 needs to be pried out when the sealing seat 5 is detached.
In a fourth embodiment, referring to fig. 3, 4 and 6, the present utility model provides a technical solution: the closed door frame is hinged from top to bottom, the structure of this embodiment is the same as that of the third embodiment, the difference is that;
In order to seal the top of the hinge sleeve 11 and facilitate prying open of the seal sleeve 51, the seal seat 5 is supported by a seal baffle ring 52, the seal baffle ring 52 is integrally formed and connected to the peripheral side of the top of the seal sleeve 51, the lower side of the seal baffle ring 52 abuts against the top surface of the hinge sleeve 11, the seal baffle ring 52 can block the gap between the seal sleeve 51 and the hinge sleeve 11, the tightness of the inside is maintained, and the seal sleeve 51 is conveniently pried out through the seal baffle ring 52;
wherein: the outer diameter of the closing stop ring 52 is the same as the outer diameter of the hinge sleeve 11, which is beneficial to completely covering the top of the hinge sleeve 11.
The beneficial effect of this scheme is:
1: the two door frame top and bottom hinge bearing grooves of the hinge sleeve 11 are of symmetrical structures, an annular supporting step 16 with the thickness of 4 mm is reserved in the middle, and an annular clamping groove 17 with the thickness of 2X0.8 mm is arranged at the upper opening and the lower opening. The structure ensures that the door frame top-bottom hinge can be used on the front and back sides, and the door leaf left opening and the door leaf right opening can both use the same door frame top-bottom hinge, thereby saving the production cost;
2: the bottom sealing piece 4 is used for sealing after the deep groove ball bearing radial force is arranged at the lower part, the sealing piece is made of stainless steel 304 material with the thickness of 1.8 mm, a continuous die is used for stamping forming, and the sealing piece is extruded into the annular clamping groove 17 with the thickness of 2X0.8 mm at the lower part of the door frame top-bottom hinge bearing groove, and cannot easily fall out of the door frame top-bottom hinge bearing groove unless a tool is used for high-force knocking from the upper part, so that the door frame top-bottom hinge bearing groove can be sealed in an adaptive manner, and the sealing piece is attractive in appearance;
3, a step of; the upper part is provided with a plane thrust cylindrical roller bearing with the thickness of 4 mm which can bear axial force, and the bearing can bear heavy load and vibration load without difficulty and has good rotating and silencing effects.
4, A step of; the upper side opening is sealed by a supporting sealing seat 5 with a shaft steel wire retainer ring 6, the supporting sealing seat 5 is formed by finely turning stainless steel 304 materials, a preset annular mounting groove 53 can be easily clamped into the general shaft steel wire retainer ring 6, and then the telescopic elasticity of the shaft steel wire retainer ring 6 is clamped into a 2X0.8 millimeter annular clamping groove 17 at the upper part of a door frame top-bottom hinge bearing groove at the upper side; after the installation, the supporting seal seat 5 can still rotate, and the plane contact area of the door leaf hinge shaft core is larger than that of the prior art. And unless a tool is used for prying, the supporting sealing seat 5 and the door frame top-bottom hinge main body 1 are not separated due to general external force, so that the sealing effect of preventing the bearing from falling out is achieved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A closed door frame top and bottom hinge, characterized by comprising:
The door frame top and bottom hinge main body (1) comprises a hinge sleeve (11), a side joint part (12), a rectangular installation part (14), an annular supporting step (16) and an annular clamping groove (17), one side of the hinge sleeve (11) is fixedly connected with one end of the rectangular installation part (14) through the side joint part (12), the annular supporting step (16) is fixedly connected with the middle part in the hinge sleeve (11), the annular supporting step (16) divides the inside of the hinge sleeve (11) into two door frame top and bottom hinge bearing grooves which are vertically symmetrical, and the annular clamping groove (17) is respectively formed in the upper end and the lower end of the inner side of the hinge sleeve (11);
A plane thrust cylindrical roller bearing (2) is arranged in a door frame top-bottom hinged bearing groove at the upper side;
the deep groove ball bearing (3) is arranged in the top-bottom hinge bearing groove of the door frame at the lower side;
The bottom sealing piece (4) is arranged at the bottom of the inner side of the hinge sleeve (11);
The supporting sealing seat (5) is arranged at the top of the hinge sleeve (11).
2. A closed door frame top and bottom hinge as claimed in claim 1, wherein: the door frame top and bottom hinge main body (1) further comprises a weight reduction groove (13), and the weight reduction groove (13) is symmetrically formed in the upper side and the lower side of the side joint part (12).
3. A closed door frame top and bottom hinge as claimed in claim 1, wherein: the door frame top and bottom hinge main body (1) further comprises a rectangular installation through groove (15), and the middle part of the rectangular installation part (14) is provided with the rectangular installation through groove (15).
4. A closed door frame top and bottom hinge as claimed in claim 1, wherein: the bottom sealing piece (4) comprises a circular sheet body (41) and an annular clamping step (42), the circular sheet body (41) is arranged at the inner bottom of the hinge sleeve (11), the annular clamping step (42) is integrally formed and connected with the outer periphery side of the top of the circular sheet body (41), and the annular clamping step (42) is clamped with the annular clamping groove (17) at the inner bottom of the hinge sleeve (11).
5. A closed door frame top and bottom hinge as claimed in claim 1, wherein: the supporting seal seat (5) comprises a seal sleeve (51) and an annular mounting groove (53), the seal sleeve (51) is sleeved on the inner side of the top of the hinge sleeve (11), the annular mounting groove (53) is formed in the middle of the outer periphery side of the seal sleeve (51), a shaft steel wire check ring (6) is arranged in the annular mounting groove (53), and the shaft steel wire check ring (6) is clamped with an annular clamping groove (17) on the inner side top of the hinge sleeve (11).
6. A closed door frame top and bottom hinge as claimed in claim 5, wherein: the supporting sealing seat (5) further comprises a sealing baffle ring (52), the sealing baffle ring (52) is integrally formed on the outer peripheral side of the top of the sealing sleeve (51), and the lower side of the sealing baffle ring (52) abuts against the top surface of the hinge sleeve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322501845.6U CN220815311U (en) | 2023-09-14 | 2023-09-14 | Closed door frame top and bottom hinge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322501845.6U CN220815311U (en) | 2023-09-14 | 2023-09-14 | Closed door frame top and bottom hinge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220815311U true CN220815311U (en) | 2024-04-19 |
Family
ID=90698069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322501845.6U Active CN220815311U (en) | 2023-09-14 | 2023-09-14 | Closed door frame top and bottom hinge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220815311U (en) |
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2023
- 2023-09-14 CN CN202322501845.6U patent/CN220815311U/en active Active
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