CN216341554U - Hydraulic opening hinge with self-closing function - Google Patents
Hydraulic opening hinge with self-closing function Download PDFInfo
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- CN216341554U CN216341554U CN202120135115.7U CN202120135115U CN216341554U CN 216341554 U CN216341554 U CN 216341554U CN 202120135115 U CN202120135115 U CN 202120135115U CN 216341554 U CN216341554 U CN 216341554U
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- opening
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- 239000010720 hydraulic oil Substances 0.000 claims description 27
- 238000005299 abrasion Methods 0.000 abstract description 4
- 229920003266 Leaf® Polymers 0.000 description 39
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a hydraulic opening hinge with a self-closing function, which comprises a shaft sleeve, and a left hinge plate and a right hinge plate which are arranged on the shaft sleeve, wherein the shaft sleeve comprises a first connecting part, a second connecting part and a shaft tube, gear shafts are respectively embedded in the first connecting part and the second connecting part, each gear shaft comprises a gear part, a column part and a bevel gear part, and a rotating shaft, a push column and a hydraulic cylinder are arranged in the shaft tube. The bevel gear part at the bottom end of the gear shaft is meshed and connected with the first bevel gear wheel on the rotating shaft, the push column pushes the air bag piston to move downwards in the hydraulic cylinder through the linkage relation of the movable rod and the push column when the gear shaft rotates, so that hydraulic pressure is formed inside the hydraulic cylinder, and through the matching use of the hydraulic cylinder, the air bag piston and the push column, the internal hydraulic pressure or negative pressure of the hydraulic cylinder can slowly open and close the door without generating noise, thereby avoiding the abrasion caused by strong impact between the door and a door frame when the door is closed traditionally.
Description
Technical Field
The utility model relates to the technical field of hinges, in particular to a hydraulic opening hinge with a self-closing function.
Background
The hinge is also called a hinge, a hydraulic hinge and a full-name torsion spring type hydraulic buffering door closing hinge, and is one of several hinges with door closer functions commonly seen in the market at present; is one of the automatic door-closing hinges that was first found on the market to replace door closers.
The prior hinge technology has the following defects: most of existing hinges are closed through the torsional deformation reaction force of a spring, but when the hinges are closed through the spring reaction force, no damping exists, and abrasion and noise caused by strong impact between a door and a door frame when the door is closed are avoided.
Therefore, it is necessary to provide a hydraulic opening hinge with a self-closing function.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a hydraulic opening hinge with a self-closing function, which solves the problems of abrasion and noise caused by strong impact between a door and a door frame when the door is closed in the using process of the conventional hinge through a transmission mechanism and a hydraulic cylinder arranged in a shaft sleeve.
In order to achieve the above purpose, the utility model provides the following technical scheme: a hydraulic opening hinge with a self-closing function comprises a shaft sleeve, and a left hinge plate and a right hinge plate which are arranged on the shaft sleeve, wherein the shaft sleeve comprises a first connecting part, a second connecting part and a shaft tube, gear shafts are respectively embedded in the first connecting part and the second connecting part, each gear shaft comprises a gear part, a column part and a bevel gear part, the gear parts are arranged in the connecting parts, the column parts extend into the shaft tube towards one side, one ends, far away from the gear parts, of the column parts are fixedly connected with the bevel gear parts, a rotating shaft is arranged in the shaft tube, a first bevel gear and a rotating disc are fixedly connected onto the rotating shaft, a fixed shaft is fixedly connected to the upper edge of the right side surface of the rotating disc, the fixed shaft is fixedly connected with the top end of a movable rod through a first rotating connecting part, and a push column and a hydraulic cylinder are arranged at the bottom of the movable rod;
the pneumatic cylinder is internally provided with an air bag piston, the top end of the pneumatic cylinder is provided with a first opening, the bottom end of the pushing column extends to the inside of the pneumatic cylinder through the opening, the pushing column is movably connected with the pneumatic cylinder through the air bag piston, a second opening is formed in the air bag piston, a plurality of movable plates and a plurality of telescopic rods are arranged at a second opening on the air bag piston, one end of each movable plate is fixedly connected with the air bag piston through a third rotating connecting piece, a groove is formed in the air bag piston, the telescopic rods are arranged inside the grooves, one end of each telescopic rod is fixedly connected with the inside of each groove, and the other end of each telescopic rod is fixedly connected with the corresponding movable plate.
Preferably, the bottom end of the movable rod is provided with a push block, the push block is fixedly connected with a second rotating connecting piece, the bottom end of the movable rod is fixedly connected with the push block through the second rotating connecting piece, and the bottom end of the push block is fixedly connected with the top end of the push column.
Preferably, one end of the rotating shaft is fixedly connected with the inner wall of the shaft tube, a first bevel gear on the rotating shaft is matched with a bevel gear part on the gear shaft, and the first bevel gear is meshed with the bevel gear part.
Preferably, the movable plates are attached to second openings on the airbag piston in an annular mode, a cavity is formed in the bottom end of the push column and communicated with the cavity inside the hydraulic cylinder through the second openings, and the cavity completely covers the second openings.
Preferably, the left page board passes through axle sleeve and right page board swing joint, left page board and central siphon fixed connection, and right page board passes through first connecting portion and second connecting portion and axle sleeve body fixed connection.
Preferably, a plurality of fixing parts are arranged on the left page plate and the right page plate respectively, each fixing part comprises a first bolt hole, a plurality of first bolt holes are respectively arranged on the left page plate and the right page plate, the number of the first bolt holes on the left page plate and the number of the first bolt holes on the right page plate are four, the four first bolt holes are uniformly arranged on the left page plate and the right page plate at equal intervals,
preferably, the fixed part comprises second bolt holes, a plurality of second bolt holes are formed in the left leaf plate and the right leaf plate respectively, the first bolt holes in the left leaf plate and the right leaf plate are eight, and the first bolt holes are uniformly formed in the left leaf plate and the right leaf plate.
The utility model has the beneficial effects that:
the door of the utility model drives the left blade plate to rotate, the bevel gear part at the bottom end of the gear shaft is meshed and connected with the first bevel gear wheel on the rotating shaft, so that the rotating shaft rotates, the rotating disc at the right end of the rotating shaft synchronously rotates, the rotating disc pushes the air bag piston to move downwards in the hydraulic cylinder through the linkage relation of the movable rod and the push column, so that hydraulic pressure is formed inside the hydraulic cylinder, hydraulic oil inside the hydraulic cylinder enters the cavity at the bottom end of the push column through the second opening of the air bag piston, when the door is released, the hydraulic oil inside the hydraulic cylinder enters the cavity of the push column to form negative pressure, the hydraulic oil inside the hydraulic cylinder flows back to the inside of the hydraulic cylinder through the second opening, and the diameter of a flow opening at the second opening is reduced due to the annular movable plate arranged at the second opening, the backflow speed of the hydraulic oil is slowed, the hydraulic oil flows back to push the push column to move upwards, the door that will link to each other with left page or leaf board is closed, through the pneumatic cylinder that sets up in the axle sleeve inside, use through the cooperation of pneumatic cylinder, gasbag piston and pushing ram, at the hydraulic pressure or the negative pressure of pneumatic cylinder insideness, can be so that the slow opening of door and the closure of trading the door, can not produce the noise, the traditional wearing and tearing that cause of striking strongly between door and the doorframe when closing the door of avoiding, the traditional spring that sets up in the hinge inside that also avoids simultaneously, form great friction noise because of the extrusion with reseing.
Drawings
Fig. 1 is a schematic view of an overall structure of a hydraulic opening hinge with a self-closing function according to the present invention;
FIG. 2 is a cross-sectional view of a hydraulic opening hinge with self-closing functionality according to the present invention;
FIG. 3 is an enlarged view of the utility model at A in FIG. 2;
FIG. 4 is a schematic view of a connecting structure of a gear shaft and a rotating shaft provided by the present invention;
FIG. 5 is an enlarged view at B of FIG. 2 in accordance with the present invention;
FIG. 6 is an enlarged view at C of FIG. 5 in accordance with the present invention;
FIG. 7 is a schematic structural diagram of example 2 provided in the present invention;
in the figure: 1. a shaft sleeve; 2. a left leaf plate; 3. a right page plate; 4. a first connection portion; 5. a second connecting portion; 6. An axle tube; 7. a gear shaft; 8. a bevel gear portion; 9. a rotating shaft; 10. a first bevel gear; 11. a turntable; 12. A fixed shaft; 13. a movable rod; 14. pushing the column; 15. a hydraulic cylinder; 16. an air bag piston; 17. a first opening; 18. a second opening; 19. a movable plate; 20. a telescopic rod; 21. a groove; 22. a push block; 23. a cavity; 24. a spring; 25. a first bolt hole; 26. a second bolt hole.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
an air bag piston 16 is arranged in the hydraulic cylinder 15, a first opening 17 is arranged at the top end of the hydraulic cylinder 15, the bottom end of the push column 14 extends into the hydraulic cylinder 15 through the opening, the push column 14 is movably connected with the hydraulic cylinder 15 through the air bag piston 16, a second opening 18 is arranged on the air bag piston 16, a plurality of movable plates 19 and a plurality of telescopic rods 20 are arranged at the second opening 18 on the air bag piston 16, one end of each movable plate 19 is fixedly connected with the air bag piston 16 through a third rotary connecting piece, a groove 21 is formed in the air bag piston 16, the telescopic rods 20 are arranged in the groove 21, one end of each telescopic rod 20 is fixedly connected with the inside of the groove 21, the other end of each telescopic rod 20 is fixedly connected with the corresponding movable plate 19, the push column 14 pushes the air bag piston 16 to move downwards in the hydraulic cylinder 15, hydraulic pressure is formed in the hydraulic cylinder 15, hydraulic oil in the hydraulic cylinder 15 enters the cavity 23 at the bottom end of the push column 14 through the second opening 18 on the air bag piston 16, when the door is opened, hydraulic oil in the hydraulic cylinder 15 enters the cavity 23 of the push column 14, so that negative pressure is formed in the hydraulic cylinder 15, hydraulic pressure in the cavity 23 of the push column 14 returns to the interior of the hydraulic cylinder 15 through the second opening 18, the movable plate 19 is fixed through the telescopic rod 20 due to the annular movable plate 19 arranged at the second opening 18, so that the diameter of the flow opening at the second opening 18 is reduced, the return speed of the hydraulic oil is reduced, the hydraulic oil returns to push the push column 14 to move upwards, the movable plate 19 and the spring 24 arranged at the second opening 18 on the airbag piston 16 push the movable plate 19 and the spring 24, when the hydraulic oil enters the cavity 23 in the push column 14 through the opening, the hydraulic oil pushes the movable plate 19, the telescopic rod 20 and the spring 24 are in a compressed state, and the movable plate 19 enables the movable plate 19 to be capable of adjusting the rotation angle through the third rotary connecting piece, simultaneously the fly leaf 19 passes through telescopic link 20 and spring 24 and supports, and then with the circulation bore grow of hydraulic oil, make the door open smoothly, when the pine opens the door, because the formation negative pressure in the pneumatic cylinder 15, the inside hydraulic oil backward flow of cavity 23 on the push post 14, during the backward flow, because the fly leaf 19 receives the support of expansion plate, receive the impact of hydraulic oil and the reaction force of spring 24, make telescopic link 20 extension, and then the angle that drives fly leaf 19 is adjusted, a plurality of expansion plates are in relative closed state, and then make the expansion plate extension, and then reduced the circulation diameter of the backward flow passageway of hydraulic oil, make the door can slowly close.
Furthermore, a pushing block 22 is arranged at the bottom end of the movable rod 13, a second rotating connecting piece is fixedly connected to the pushing block 22, the bottom end of the movable rod 13 is fixedly connected with the pushing block 22 through the second rotating connecting piece, the bottom end of the pushing block 22 is fixedly connected with the top end of the pushing column 14, two ends of the movable rod 13 are respectively connected with the pushing column 14 and the rotary table 11 through the first rotating connecting piece and the second rotating connecting piece, a fixed shaft 12 is arranged at the edge of the right side face of the rotary table 11, and when the rotary table 11 rotates through the rotating shaft 9, the fixed shaft 12 on the rotary table 11 is matched with the first rotating connecting piece and the second rotating connecting piece to drive the pushing column 14 to reciprocate up and down;
furthermore, one end of the rotating shaft 9 is fixedly connected with the inner wall of the shaft tube 6, a first bevel gear 10 on the rotating shaft 9 is matched with a bevel gear part 8 on the gear shaft 7, and the first bevel gear 10 is meshed with the bevel gear part 8 to open or close the door, so that when the gear shaft 7 in the first connecting part 4 rotates, the gear shaft 7 rotates, and the bevel gear part 8 on the gear shaft 7 is meshed with the first bevel gear 10 to drive the rotating shaft 9 to rotate;
furthermore, a plurality of the movable plates 19 are attached to the second opening 18 of the airbag piston 16 in an annular arrangement, a cavity 23 is formed at the bottom end of the push column 14, the cavity 23 is communicated with the cavity 23 inside the hydraulic cylinder 15 through the second opening 18, the cavity 23 completely covers the second opening 18, the rotating shaft 9 rotates, the rotating disc 11 at the right end of the rotating shaft 9 synchronously rotates, the push column 14 pushes the airbag piston 16 to perform piston movement inside the hydraulic cylinder 15 through the linkage relationship of the rotating disc 11, the movable rod 13 and the push column 14, the push column 14 pushes the airbag piston 16 to move downwards in the hydraulic cylinder 15, hydraulic pressure is formed inside the hydraulic cylinder 15, hydraulic oil inside the hydraulic cylinder 15 enters the cavity 23 at the bottom end of the push column 14 through the second opening 18 of the airbag piston 16, when the door is released, because the hydraulic oil inside the hydraulic cylinder 15 enters the cavity 23 of the push column 14, therefore, negative pressure is formed inside the hydraulic cylinder 15, hydraulic oil in the cavity 23 flows back to the inside of the hydraulic cylinder 15 through the second opening 18, and due to the annular movable plate 19 arranged at the second opening 18, the diameter of the circulation port at the second opening 18 is reduced, the return speed of the hydraulic oil is reduced, the hydraulic oil flows back, the push column 14 is pushed to move upwards, and the door connected with the left leaf plate 2 is closed;
furthermore, hydraulic oil is arranged in the hydraulic cylinder 15, the telescopic rod 20 is sleeved with a spring 24, and the spring 24 improves the effect of the movable plate 19 on resetting the telescopic plate when the hydraulic oil flows back;
further, the left page plate 2 is movably connected with the right page plate 3 through the shaft sleeve 1, the left page plate 2 is fixedly connected with the shaft tube 6, the right page plate 3 is fixedly connected with the shaft sleeve 1 body through the first connecting part 4 and the second connecting part 5, and when the door is opened or closed, the first connecting part 4 and the second connecting part 5 enable the gear shaft 7 to rotate inside the shaft sleeve 1;
further, all be provided with a plurality of fixed parts on left page board 2 and the right page board 3, fixed part includes first bolt hole 25, a plurality of first bolt holes 25 have been seted up respectively on left page board 2 and the right page board 3, and the first bolt hole 25 on left page board 2 and the right page board 3 is four, four first bolt hole 25 is equidistant evenly setting on left page board and right page board 3.
The using process of the utility model is as follows: when the utility model is used, the left leaf plate 2 and the right leaf plate 3 are fixed on a door and a door frame through the fixing parts, when the door is opened, the door drives the left leaf plate to rotate, so that the gear shaft 7 in the connecting part rotates, because the bevel gear part 8 at the bottom end of the gear shaft 7 is meshed with the first bevel gear 10 on the rotating shaft 9, so that the rotating shaft 9 rotates, the rotating disc 11 at the right end of the rotating shaft 9 synchronously rotates, the rotating disc 11 is in linkage relation with the pushing column 14 through the movable rod 13, so that the rotating disc 11 drives the pushing column 14 to perform reciprocating piston motion in the hydraulic cylinder 15, the pushing column 14 pushes the air bag piston 16 to move downwards in the hydraulic cylinder 15, so that hydraulic pressure is formed in the hydraulic cylinder 15, hydraulic oil in the hydraulic cylinder 15 enters the cavity 23 at the bottom end of the pushing column 14 through the second opening 18 on the air bag piston 16, when the door is opened, the hydraulic oil in the hydraulic cylinder 15 enters the cavity 23 of the pushing column 14, and then make the inside negative pressure that forms of pneumatic cylinder 15, the inside hydraulic pressure of push column 14 cavity 23 returns through second opening 18 and flows back to inside pneumatic cylinder 15, because the annular fly leaf 19 that sets up in second opening 18 department, fly leaf 19 fixes through telescopic link 20, and then makes the diameter of the circulation mouth of second opening 18 department diminish, and the backward flow speed of hydraulic oil slows, and hydraulic oil backward flow promotes push column 14 and moves up, and then makes gear shaft 7 rotatory, will close with the door that left page or leaf board 2 links to each other.
the inside gasbag piston 16 that is provided with of pneumatic cylinder 15, the pneumatic cylinder 15 top is provided with first opening 17, it is inside that the opening extends to pneumatic cylinder 15 to push away 14 bottoms of post, and push away post 14 through gasbag piston 16 and pneumatic cylinder 15 swing joint, be provided with second opening 18 on the gasbag piston 16, second opening 18 department on the gasbag piston 16 is provided with a plurality of fly leafs 19 and a plurality of telescopic link 20, fly leaf 19 one end is through third swivelling joint spare and gasbag piston 16 fixed connection, seted up recess 21 on the gasbag piston 16, the inside telescopic link 20 that is provided with of recess 21, the inside fixed connection of telescopic link 20 one end and recess 21, the telescopic link 20 other end and fly leaf 19 fixed connection.
Further, the fixed part includes second bolt hole 26, a plurality of second bolt holes 26 have been seted up on left page or leaf board 2 and the right page or leaf board 3 respectively, and just first bolt hole 25 on left page or leaf board 2 and the right page or leaf board 3 is eight, four first bolt hole 25 evenly sets up on left page or leaf board and right page or leaf board 3.
The using process of the utility model is as follows: when the utility model is used, the left leaf plate 2 and the right leaf plate 3 are fixed on the door and the door frame through the fixing parts, when the door is opened, the door drives the left leaf plate to rotate, and further the gear shaft 7 inside the connecting part is rotated, the gear shaft 7 drives the movable rod 13 through the cooperation with the rotating shaft 9 to make the pushing column 14 perform piston motion in the hydraulic cylinder 15, in the embodiment, compared with the embodiment 1, the second bolt holes 26 are arranged on the left leaf plate 2 and the right leaf plate 3, through the eight second bolt holes 26 arranged on the left leaf plate 2 and the right leaf plate 3, the left leaf plate 2 and the right leaf plate 3 are connected with the door and the door frame more stably, meanwhile, the reaction force in the shaft sleeve 1 acts on the door frame or the door with better effect, and by arranging the hydraulic effect in the shaft sleeve 1, the door is slowly opened and the door is replaced, noise is not generated, and abrasion caused by strong impact between the door and a door frame when the door is closed in the traditional method is avoided.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a hydraulic pressure aperture hinge of self-closing function, includes axle sleeve (1) and installs left page or leaf board (2) and right page or leaf board (3) on axle sleeve (1), its characterized in that: the shaft sleeve (1) comprises a first connecting part (4), a second connecting part (5) and a shaft tube (6), a gear shaft (7) is respectively embedded in the first connecting part (4) and the second connecting part (5), the gear shaft (7) includes a gear portion, a column portion, and a bevel gear portion (8), the gear portion being disposed inside the connecting portion, the column part extends to the inside of the shaft tube (6) towards one side, one end of the column part far away from the gear part is fixedly connected with a bevel gear part (8), a rotating shaft (9) is arranged in the shaft tube (6), a first bevel gear (10) and a rotating disc (11) are fixedly connected to the rotating shaft (9), a fixed shaft (12) is fixedly connected with the upper edge of the right side surface of the turntable (11), the fixed shaft (12) is fixedly connected with the top end of the movable rod (13) through a first rotary connecting piece, a push column (14) and a hydraulic cylinder (15) are arranged at the bottom of the movable rod (13);
an air bag piston (16) is arranged in the hydraulic cylinder (15), a first opening (17) is arranged at the top end of the hydraulic cylinder (15), the bottom end of the push column (14) extends into the hydraulic cylinder (15) through the opening, and the push column (14) is movably connected with the hydraulic cylinder (15) through an air bag piston (16), a second opening (18) is arranged on the air bag piston (16), a plurality of movable plates (19) and a plurality of telescopic rods (20) are arranged at the second opening (18) on the air bag piston (16), one end of the movable plate (19) is fixedly connected with the air bag piston (16) through a third rotary connecting piece, a groove (21) is formed in the airbag piston (16), a telescopic rod (20) is arranged in the groove (21), one end of the telescopic rod (20) is fixedly connected with the inside of the groove (21), and the other end of the telescopic rod (20) is fixedly connected with the movable plate (19).
2. The hydraulic opening hinge with self-closing function as claimed in claim 1, wherein: the push rod (13) bottom is provided with ejector pad (22), fixedly connected with second swivel connected coupler on ejector pad (22), second swivel connected coupler and ejector pad (22) fixed connection are passed through to movable rod (13) bottom, ejector pad (22) bottom and ejector pin (14) top fixed connection.
3. The hydraulic opening hinge with self-closing function as claimed in claim 1, wherein: one end of the rotating shaft (9) is fixedly connected with the inner wall of the shaft tube (6), a first bevel gear (10) on the rotating shaft (9) is matched with a bevel gear part (8) on the gear shaft (7), and the first bevel gear (10) is meshed with the bevel gear part (8).
4. The hydraulic opening hinge with self-closing function as claimed in claim 1, wherein: the movable plates (19) are attached to the second opening (18) of the air bag piston (16) in an annular mode, a cavity (23) is formed in the bottom end of the push column (14), the cavity (23) is communicated with the cavity (23) inside the hydraulic cylinder (15) through the second opening (18), and the cavity (23) completely covers the second opening (18).
5. The hydraulic opening hinge with self-closing function as claimed in claim 1, wherein: hydraulic oil is arranged in the hydraulic cylinder (15), and the telescopic rod (20) is sleeved with a spring (24).
6. The hydraulic opening hinge with self-closing function as claimed in claim 1, wherein: left side page or leaf board (2) are through axle sleeve (1) and right page or leaf board (3) swing joint, left side page or leaf board (2) and central siphon (6) fixed connection, right page or leaf board (3) are through first connecting portion (4) and second connecting portion (5) and axle sleeve (1) body fixed connection.
7. The hydraulic opening hinge with self-closing function as claimed in claim 1, wherein: all be provided with a plurality of fixed parts on left page board (2) and the right page board (3), fixed part includes first bolt hole (25), a plurality of first bolt holes (25) have been seted up respectively on left page board (2) and the right page board (3), and first bolt hole (25) on left page board (2) and the right page board (3) are four, four first bolt hole (25) equidistance evenly sets up on left page board and right page board (3).
8. The hydraulic opening hinge with the self-closing function according to claim 7 is characterized in that: the fixed part comprises second bolt holes (26), a plurality of second bolt holes (26) are respectively formed in the left leaf plate (2) and the right leaf plate (3), and first bolt holes (25) in the left leaf plate (2) and the right leaf plate (3) are eight and four, and the first bolt holes (25) are uniformly formed in the left leaf plate and the right leaf plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120135115.7U CN216341554U (en) | 2021-01-19 | 2021-01-19 | Hydraulic opening hinge with self-closing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120135115.7U CN216341554U (en) | 2021-01-19 | 2021-01-19 | Hydraulic opening hinge with self-closing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216341554U true CN216341554U (en) | 2022-04-19 |
Family
ID=81129282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120135115.7U Expired - Fee Related CN216341554U (en) | 2021-01-19 | 2021-01-19 | Hydraulic opening hinge with self-closing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216341554U (en) |
-
2021
- 2021-01-19 CN CN202120135115.7U patent/CN216341554U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220419 |