CN115075678B - Lubricating assembly for intelligent doors and windows - Google Patents
Lubricating assembly for intelligent doors and windows Download PDFInfo
- Publication number
- CN115075678B CN115075678B CN202210769385.2A CN202210769385A CN115075678B CN 115075678 B CN115075678 B CN 115075678B CN 202210769385 A CN202210769385 A CN 202210769385A CN 115075678 B CN115075678 B CN 115075678B
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- China
- Prior art keywords
- window
- door
- intelligent door
- extrusion
- oil
- 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.)
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 43
- 230000000903 blocking effect Effects 0.000 claims description 19
- 238000005461 lubrication Methods 0.000 claims description 12
- 239000012780 transparent material Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 abstract description 36
- 239000010687 lubricating oil Substances 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D11/00—Additional features or accessories of hinges
- E05D11/02—Lubricating arrangements
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/148—Windows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wing Frames And Configurations (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention relates to the technical field of doors and windows, and discloses a lubricating assembly for an intelligent door and window, which comprises an intelligent door and window main body, wherein clamping grooves are formed in the bottom of the intelligent door and window main body, mounting grooves are formed in the bottoms of two sides of the intelligent door and window main body, the clamping grooves are communicated with the interiors of the two mounting grooves, two door and window pulleys are fixedly arranged at the bottom of the inner side of the clamping grooves, oil storage boxes are fixedly arranged at the tops of the inner sides of the two mounting grooves, extrusion hoses are fixedly arranged at the middle positions of one sides of the bottoms of the two oil storage boxes, valve bodies are fixedly arranged at the bottoms of the two extrusion hoses, and the outer surfaces of the two valve bodies are fixedly connected with one sides of the interiors of the corresponding mounting grooves. The invention can lubricate the door and window sliding groove and the door and window pulley when a user slides and pulls the door and window main body daily, effectively prolongs the service life of the door and window pulley, and effectively simplifies the process of manually adding lubricating oil to the door and window sliding groove and the door and window pulley by the user.
Description
Technical Field
The invention relates to the technical field of doors and windows, in particular to a lubricating assembly for an intelligent door and window.
Background
The door and window is visible everywhere in daily life, along with the development of the times, the intelligent door and window is gradually popularized, and the intelligent door and window is a door and window provided with advanced anti-theft, anti-robbing and alarm system technologies.
At present, when intelligent door and window moves in entering the door and window spout, the door and window pulley can be used, and along with the long-time use of intelligent door and window, need lubricate the maintenance to door and window pulley and door and window spout, and the ordinary maintenance process, generally, user lubricates door and window pulley and door and window spout to door and window pulley and door and window spout spraying lubricant, this kind of mode is nevertheless can effectually lubricate door and window pulley and door and window spout, but spraying process is comparatively loaded down with trivial details, and this kind of lubrication mode is difficult to keep the lubricated state of door and window pulley and door and window spout, and to some intelligent doors and windows that are difficult to dismantle, can make the user be inconvenient for spraying lubricant to door and window pulley, consequently we make the improvement to this, propose a lubrication assembly for intelligent door and window.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a lubricating component for an intelligent door and window, which comprises an intelligent door and window main body, wherein clamping grooves are formed in the bottom of the intelligent door and window main body, mounting grooves are formed in the lower parts of two sides of the intelligent door and window main body, the clamping grooves are communicated with the interiors of the two mounting grooves, two door and window pulleys are fixedly arranged at the bottom of the inner side of the clamping grooves, an oil storage box is fixedly arranged at the top of the inner side of the two mounting grooves, an extrusion hose is fixedly arranged at the middle position of one side of the bottom of the oil storage box, valve bodies are fixedly arranged at the bottom ends of the two extrusion hoses, the outer surfaces of the two valve bodies are fixedly connected with one side of the corresponding inside of the mounting grooves, a first rotating shaft, a second rotating shaft and a third rotating shaft are sequentially arranged between the two sides of the inside of the two mounting grooves from top to bottom, a large gear and an extrusion rod are fixedly arranged on the outer surface of the two first rotating shafts, a middle gear is fixedly arranged on the outer surface of the two third rotating shafts, and a small gear and a driving wheel are fixedly arranged on the outer surface of the two third rotating shafts.
As a preferable technical scheme of the invention, the two door and window pulleys are respectively positioned at one sides of the two mounting grooves. The inside of two door and window pulleys is all fixed mounting has the oil delivery pipe, two the one end of oil delivery pipe respectively with two the bottom fixed connection of valve body.
As a preferable technical scheme of the invention, the two extrusion rods are positioned at the middle positions corresponding to the outer surfaces of the first rotating shafts, the two ends of the two extrusion rods are rotatably provided with extrusion wheels, and the two extrusion hoses are respectively positioned at one sides of the two extrusion rods.
As a preferable embodiment of the present invention, the large gear is engaged with the middle gear, the middle gear is engaged with the small gear, and diameters of the large gear, the middle gear, and the small gear are sequentially reduced.
As a preferable technical scheme of the invention, one side above the front surfaces of the two oil storage boxes is provided with oil filling holes, and the two oil storage boxes are made of transparent materials.
As a preferable technical scheme of the invention, a fixing piece is fixedly arranged in the valve body, a spring is arranged at the top of the fixing piece, a blocking sleeve is arranged at the top end of the spring, an annular bulge is arranged on the inner wall of the valve body, and the annular bulge is positioned at the top of the blocking sleeve.
As a preferable technical scheme of the invention, four oil inlet holes are formed in the outer surface of the blocking sleeve at equal intervals, the top end of the blocking sleeve is of a closed structure, the bottom end of the blocking sleeve is of an open structure, and a through hole is formed in the middle position inside the fixing piece.
The beneficial effects of the invention are as follows:
when intelligent door and window main part slides in door and window spout inside, the extrusion pole will constantly rotate to extrude the hose, make the inside lubricating oil of extrusion hose inside get into the inside of oil delivery pipe, later lubricating oil will drip at the surface of door and window pulley along with the oil delivery pipe, and lubricating oil will adhere to the surface at the door and window pulley along with the roll of door and window pulley completely, and can adhere to the inside surface of door and window spout, thereby can be convenient for lubricate door and window pulley and door and window spout.
The invention can lubricate the door and window sliding groove and the door and window pulley when a user slides and pulls the door and window main body daily, effectively prolongs the service life of the door and window pulley, and effectively simplifies the process of manually adding lubricating oil to the door and window sliding groove and the door and window pulley by the user.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a perspective view of a lubrication assembly for a smart door and window according to the present invention;
FIG. 2 is a second perspective view of a lubrication assembly for smart doors and windows according to the present invention;
FIG. 3 is an enlarged schematic view of the lubrication assembly for smart doors and windows of the present invention at A in FIG. 1;
FIG. 4 is an enlarged schematic view of the lubrication assembly for smart doors and windows of FIG. 2 at B;
FIG. 5 is a schematic view showing the internal structure of a valve body of a lubrication assembly for smart doors and windows according to the present invention;
in the figure: 1. an intelligent door and window main body; 2. an oil storage box; 3. a clamping groove; 4. door and window pulleys; 5. a driving wheel; 6. extruding a hose; 7. an extrusion rod; 8. a first rotating shaft; 9. a large gear; 10. a middle gear; 11. a second rotating shaft; 12. a third rotating shaft; 13. a valve body; 14. an oil delivery pipe; 15. a pinion gear; 16. a fixing piece; 17. a barrier sleeve; 18. a spring; 19. an annular protrusion; 20. and a mounting groove.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Examples: as shown in fig. 1-4, the lubricating assembly for the intelligent door and window comprises an intelligent door and window main body 1, wherein clamping grooves 3 are formed in the bottom of the intelligent door and window main body 1, mounting grooves 20 are formed in the lower portions of two sides of the intelligent door and window main body 1, the clamping grooves 3 are communicated with the interiors of the two mounting grooves 20, two door and window pulleys 4 are fixedly arranged at the bottom of the inner side of the clamping grooves 3, oil storage boxes 2 are fixedly arranged at the tops of the inner sides of the two mounting grooves 20, an extrusion hose 6 is fixedly arranged at the middle position of one side of the bottoms of the two oil storage boxes 2, and lubricating oil in the oil storage boxes 2 can enter the extrusion hose 6 under the action of gravity.
The first rotating shaft 8, the second rotating shaft 11 and the third rotating shaft 12 are sequentially installed between two sides of the inside of the two installation grooves 20 in a rotating mode from top to bottom, the large gear 9 and the extrusion rod 7 are fixedly installed on the outer surfaces of the two first rotating shafts 8, the middle gear 10 is fixedly installed on the outer surfaces of the two second rotating shafts 11, the small gear 15 and the driving wheel 5 are fixedly installed on the outer surfaces of the two third rotating shafts 12, when the intelligent door and window main body 1 slides in the door and window sliding groove, the driving wheel 5 rotates, the rotating driving wheel 5 drives the third rotating shaft 12 to rotate, the third rotating shaft 12 drives the first rotating shaft 8 to rotate through the small gear 15, the middle gear 10 and the large gear 9, and the extrusion rod 7 is driven to rotate by the first rotating shaft 8.
Two extrusion bars 7 are located the intermediate position department that corresponds first pivot 8 surface, and extrusion wheel is installed in the both ends of two extrusion bars 7 all rotation, and two extrusion hoses 6 are located one side of two extrusion bars 7 respectively, and extrusion hose 6 can be constantly extruded after the extrusion bar 7 rotates to drive the flow of the inside lubricating oil of extrusion hose 6.
The large gear 9 is connected with the middle gear 10 in a meshed manner, the middle gear 10 is connected with the small gear 15 in a meshed manner, the diameters of the large gear 9, the middle gear 10 and the small gear 15 are sequentially reduced, the small gear 15 drives the large gear 9 to rotate, the rotating speed of the extrusion rod 7 can be reduced, and lubricating oil can slowly drop when the intelligent door and window main body 1 moves.
Oil filling holes are formed in one side of the front upper portions of the two oil storage boxes 2, the two oil storage boxes 2 are made of transparent materials, the transparent materials are acrylic, and a user can add lubricating oil to the inside of the oil storage boxes 2 through the oil filling holes.
As shown in fig. 4 and 5, the bottom ends of the two extrusion hoses 6 are fixedly provided with valve bodies 13, the outer surfaces of the two valve bodies 13 are fixedly connected with one side of the inside of the corresponding mounting groove 20, the inside of the valve body 13 is fixedly provided with a fixing piece 16, the top of the fixing piece 16 is provided with a spring 18, the top end of the spring 18 is provided with a blocking sleeve 17, and the spring 18 can give a certain elasticity to the blocking sleeve 17, so that the blocking sleeve 17 can be tightly attached to the annular protrusion 19.
The inner wall of valve body 13 is provided with annular protruding 19, and annular protruding 19 is located and blocks the cover 17 top, through annular protruding 19 and block the cooperation of cover 17, can seal valve body 13, can be when intelligent door and window main part 1 does not slide, the inside lubricating oil entering oil delivery pipe 14 of effectual avoiding extrusion hose 6 inside.
Four oil inlet holes are formed in the outer surface of the blocking sleeve 17 at equal intervals, the top end of the blocking sleeve 17 is of a closed structure, the bottom end of the blocking sleeve 17 is of an opening structure, a through hole is formed in the middle position of the inner portion of the fixing piece 16, and lubricating oil can enter the oil conveying pipe 14 through the oil inlet holes and the through hole after the blocking sleeve 17 moves downwards.
The two door pulleys 4 are located at one side of the two installation grooves 20, respectively. The inside of two door and window pulleys 4 is all fixed mounting has oil pipe 14, and the one end of two oil pipe 14 respectively with the bottom fixed connection of two valve bodies 13, lubricating oil can drip at the surface of door and window pulley 4 along oil pipe 14, and lubricating oil will adhere to the surface of door and window pulley 4 along with the roll of door and window pulley 4 completely to and will adhere to the inside surface of door and window spout, thereby can lubricate door and window pulley 4 and door and window spout.
Working principle: firstly, the intelligent door and window main body 1 is installed in a door and window chute, lubricating oil is added into the oil storage box 2, so that the lubricating oil enters the extrusion hose 6, then when the intelligent door and window main body 1 slides in the door and window chute, the driving wheel 5 rotates, the rotating driving wheel 5 drives the third rotating shaft 12 to rotate, the third rotating shaft 12 drives the first rotating shaft 8 to rotate through the pinion 15, the middle gear 10 and the large gear 9, and the first rotating shaft 8 drives the extrusion rod 7 to rotate.
When the extrusion rod 7 extrudes the extrusion hose 6 from top to bottom through the extrusion wheel after rotating, the lubricating oil inside the extrusion hose 6 enters the valve body 13 under extrusion and pushes the blocking sleeve 17 to move downwards, after the blocking sleeve 17 moves downwards, the lubricating oil enters the oil delivery pipe 14 through the oil inlet hole and the through hole, the lubricating oil drops on the outer surface of the door and window pulley 4 along the oil delivery pipe 14, the lubricating oil is completely attached to the outer surface of the door and window pulley 4 along with the rolling of the door and window pulley 4, and is attached to the inner surface of the door and window chute, so that the door and window pulley 4 and the door and window chute can be conveniently lubricated.
According to the intelligent door and window, the valve body 13 is arranged, so that lubricating oil in the extrusion hose 6 can be effectively prevented from entering the oil delivery pipe 14 when the intelligent door and window main body 1 does not slide, oil leakage is avoided, and consumption of the lubricating oil in the oil storage box 2 is reduced.
In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a lubrication assembly for intelligent door and window, includes intelligent door and window main part (1), its characterized in that, draw-in groove (3) have been seted up to the bottom of intelligent door and window main part (1), mounting groove (20) have all been seted up to the below of intelligent door and window main part (1) both sides, draw-in groove (3) and two the inside intercommunication of mounting groove (20), the inboard bottom fixed mounting of draw-in groove (3) has two door and window pulleys (4), two the equal fixed mounting in top of mounting groove (20) has oil storage box (2), two equal fixed mounting in intermediate position department of oil storage box (2) bottom one side has extrusion hose (6), two equal fixed mounting in bottom of extrusion hose (6) has valve body (13), two the surface of valve body (13) all with the inside one side fixed connection of corresponding mounting groove (20), two between the inside both sides of mounting groove (20) have first pivot (8), second (11) and third pivot (12) by last rotation in proper order, two in the fixed mounting of two pivot (8) has in the pivot (10) respectively the equal fixed mounting of two pivot (7), the outer surfaces of the two third rotating shafts (12) are fixedly provided with a pinion (15) and a driving wheel (5).
2. The lubricating assembly for the intelligent door and window according to claim 1, wherein two door and window pulleys (4) are respectively located at one sides of two mounting grooves (20), oil delivery pipes (14) are fixedly installed inside the two door and window pulleys (4), and one ends of the two oil delivery pipes (14) are respectively fixedly connected with the bottom ends of the two valve bodies (13).
3. The lubrication assembly for the intelligent door and window according to claim 1, wherein the two extrusion rods (7) are located at middle positions corresponding to the outer surface of the first rotating shaft (8), extrusion wheels are rotatably installed at two ends of the two extrusion rods (7), and the two extrusion hoses (6) are located on one side of the two extrusion rods (7) respectively.
4. The lubrication assembly for the intelligent door and window according to claim 1, wherein the large gear (9) is in meshed connection with the middle gear (10), the middle gear (10) is in meshed connection with the small gear (15), and diameters of the large gear (9), the middle gear (10) and the small gear (15) are sequentially reduced.
5. The lubrication assembly for the intelligent door and window according to claim 1, wherein oil filling holes are formed in one sides above the front sides of the two oil storage boxes (2), and the two oil storage boxes (2) are made of transparent materials.
6. The lubrication assembly for the intelligent door and window according to claim 1, wherein a fixing piece (16) is fixedly installed inside the valve body (13), a spring (18) is placed at the top of the fixing piece (16), a blocking sleeve (17) is installed at the top end of the spring (18), an annular protrusion (19) is arranged on the inner wall of the valve body (13), and the annular protrusion (19) is located at the top of the blocking sleeve (17).
7. The lubricating assembly for the intelligent doors and windows according to claim 6, wherein four oil inlet holes are formed in the outer surface of the blocking sleeve (17) at equal intervals, the top end of the blocking sleeve (17) is of a closed structure, the bottom end of the blocking sleeve (17) is of an opening structure, and through holes are formed in the middle position inside the fixing piece (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210769385.2A CN115075678B (en) | 2022-06-30 | 2022-06-30 | Lubricating assembly for intelligent doors and windows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210769385.2A CN115075678B (en) | 2022-06-30 | 2022-06-30 | Lubricating assembly for intelligent doors and windows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115075678A CN115075678A (en) | 2022-09-20 |
| CN115075678B true CN115075678B (en) | 2024-02-27 |
Family
ID=83257187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210769385.2A Active CN115075678B (en) | 2022-06-30 | 2022-06-30 | Lubricating assembly for intelligent doors and windows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115075678B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253275A (en) * | 1979-07-06 | 1981-03-03 | Killough Jack D | Gate hinge and lubricating means therefor |
| CN204691511U (en) * | 2015-06-11 | 2015-10-07 | 北京金风科创风电设备有限公司 | Door-hinge lubricating arrangement |
| CN207988749U (en) * | 2017-12-26 | 2018-10-19 | 天津畅兴建筑装饰工程有限公司 | A kind of combined mounting structure of metal door and window |
| CN208220585U (en) * | 2018-02-08 | 2018-12-11 | 广东创高幕墙门窗工程有限公司 | A kind of aluminum alloy doors and windows facilitating lubrication |
| CN109306832A (en) * | 2018-09-26 | 2019-02-05 | 李森瑞 | Mobile quickly translation door |
| CN212985076U (en) * | 2020-04-08 | 2021-04-16 | 扬州市新亚铝业科技有限公司 | Built-in sun-shading mechanism for energy-saving door and window |
| CN214740645U (en) * | 2020-12-07 | 2021-11-16 | 黄石市瑞鑫科技有限公司 | Steel alloy folding hinge capable of bearing heavy weight |
| CN216517521U (en) * | 2021-11-23 | 2022-05-13 | 杭州光环门窗有限公司 | High-compression-resistance wear-resistant window frame |
| CN216841121U (en) * | 2022-02-10 | 2022-06-28 | 成都顺达世纪机械设备有限公司 | Automatic oil adding device for civil air defense door |
-
2022
- 2022-06-30 CN CN202210769385.2A patent/CN115075678B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253275A (en) * | 1979-07-06 | 1981-03-03 | Killough Jack D | Gate hinge and lubricating means therefor |
| CN204691511U (en) * | 2015-06-11 | 2015-10-07 | 北京金风科创风电设备有限公司 | Door-hinge lubricating arrangement |
| CN207988749U (en) * | 2017-12-26 | 2018-10-19 | 天津畅兴建筑装饰工程有限公司 | A kind of combined mounting structure of metal door and window |
| CN208220585U (en) * | 2018-02-08 | 2018-12-11 | 广东创高幕墙门窗工程有限公司 | A kind of aluminum alloy doors and windows facilitating lubrication |
| CN109306832A (en) * | 2018-09-26 | 2019-02-05 | 李森瑞 | Mobile quickly translation door |
| CN212985076U (en) * | 2020-04-08 | 2021-04-16 | 扬州市新亚铝业科技有限公司 | Built-in sun-shading mechanism for energy-saving door and window |
| CN214740645U (en) * | 2020-12-07 | 2021-11-16 | 黄石市瑞鑫科技有限公司 | Steel alloy folding hinge capable of bearing heavy weight |
| CN216517521U (en) * | 2021-11-23 | 2022-05-13 | 杭州光环门窗有限公司 | High-compression-resistance wear-resistant window frame |
| CN216841121U (en) * | 2022-02-10 | 2022-06-28 | 成都顺达世纪机械设备有限公司 | Automatic oil adding device for civil air defense door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115075678A (en) | 2022-09-20 |
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