CN117627484A - Heavy door hinge with self-return function - Google Patents

Heavy door hinge with self-return function Download PDF

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Publication number
CN117627484A
CN117627484A CN202311689020.XA CN202311689020A CN117627484A CN 117627484 A CN117627484 A CN 117627484A CN 202311689020 A CN202311689020 A CN 202311689020A CN 117627484 A CN117627484 A CN 117627484A
Authority
CN
China
Prior art keywords
hinge
wall
top surface
fixed
self
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.)
Pending
Application number
CN202311689020.XA
Other languages
Chinese (zh)
Inventor
马明喜
马晓晨
曹英杰
马平喜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pinghu Chenfeng Hardware Co ltd
Original Assignee
Pinghu Chenfeng Hardware Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pinghu Chenfeng Hardware Co ltd filed Critical Pinghu Chenfeng Hardware Co ltd
Priority to CN202311689020.XA priority Critical patent/CN117627484A/en
Publication of CN117627484A publication Critical patent/CN117627484A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D3/00—Hinges with pins
    • E05D3/06—Hinges with pins with two or more pins
    • 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
    • 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
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D5/00—Construction of single parts, e.g. the parts for attachment
    • E05D5/02—Parts for attachment, e.g. flaps
    • E05D5/04—Flat flaps
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D7/00—Hinges or pivots of special construction
    • E05D7/12—Hinges or pivots of special construction to allow easy detachment of the hinge from the wing or the frame
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/08—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings
    • E05F1/10—Closers or openers for wings, not otherwise provided for in this subclass spring-actuated, e.g. for horizontally sliding wings for swinging wings, e.g. counterbalance
    • E05F1/12—Mechanisms in the shape of hinges or pivots, operated by springs
    • E05F1/1207—Mechanisms in the shape of hinges or pivots, operated by springs with a coil spring parallel with the pivot axis
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D7/00—Hinges or pivots of special construction
    • E05D7/12—Hinges or pivots of special construction to allow easy detachment of the hinge from the wing or the frame
    • E05D2007/128—Hinges or pivots of special construction to allow easy detachment of the hinge from the wing or the frame in a radial direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)

Abstract

The invention relates to the field of heavy door hinges, and discloses a heavy door hinge with a self-returning function, which comprises a first hinge seat, wherein mounting holes are respectively formed in the inner bottom surface and the top surface of the first hinge seat, a hinge rotating arm is rotatably arranged in the first hinge seat, a first gear is respectively fixed on the top surface and the bottom surface of the hinge rotating arm, a rotating column is rotatably arranged between two fixing grooves, two second gears are arranged on the outer wall of the rotating column, torsion springs are respectively fixed on the top surface of the second gear above and the bottom surface of the second gear below, and a second hinge seat is detachably arranged on one side of the hinge rotating arm. In the invention, when the heavy door is opened, the heavy door has a self-return function, thereby being beneficial to automatic closing, reducing the safety risk caused by negligence or forgetting to close the door, simultaneously eliminating the need of manual closing of the door by staff and improving the operation convenience of the heavy door.

Description

Heavy door hinge with self-return function
Technical Field
The invention relates to the technical field of heavy door hinges, in particular to a heavy door hinge with a self-returning function.
Background
Hinges are also known as hinges and are mechanical devices that connect two solids and allow relative rotation between the two. The hinge may be formed of a movable component or of a foldable material. The hinge is mainly arranged on doors, windows and cabinets and is mainly divided into a stainless steel hinge and an iron hinge according to material classification. The hinge is usually made of a hinge shaft and copper pad structure for opening and closing the heavy door of the equipment. When the operator forgets to close the door, potential safety hazards are easily caused, and therefore a heavy door hinge with a self-returning function is needed.
According to publication No.: chinese patent CN218894530U, a heavy duty door hinge, comprising: the hinge comprises a first hinge seat and a hinge rotating arm, wherein the hinge rotating arm is hinged with the first hinge seat, and a bearing assembly is arranged at a hinged position of the first hinge seat and the hinge rotating arm; the first hinge seat is provided with a first hinge shaft; the hinge swivel arm is rotatably connected with the first hinge shaft through the bearing assembly.
In the above scheme, through first hinge seat, hinge rocking arm, bearing assembly for equipment heavy door opens and shuts, leads to it to have following shortcoming: when the heavy door hinge is used, the heavy door hinge does not have a self-returning function, and further when a worker forgets to close the door, the heavy door can be kept in an open state, so that potential safety hazards are caused.
Disclosure of Invention
The invention aims to provide a heavy door hinge with a self-returning function, so as to solve the problem that when the heavy door hinge is used, the heavy door hinge does not have the self-returning function, and further when a worker forgets to close the door, the heavy door can be kept in an open state, so that potential safety hazards are caused.
In order to achieve the above object, the present invention adopts the following technical scheme: the heavy door hinge with the self-returning function comprises a first hinge seat, a plurality of first fixing holes are formed in one side of the outer wall of the first hinge seat, first fixing bolts are inserted into the first fixing holes in a rotatable mode, mounting holes are formed in the inner bottom surface and the top surface of the first hinge seat respectively, hinge rotating arms are rotatably arranged in the inner portion of the first hinge seat, mounting grooves are formed in the top surface and the bottom surface of the hinge rotating arms respectively, first gears are respectively fixed to the top surface and the bottom surface of the hinge rotating arms, first connecting holes are formed in the top surfaces of the first gears respectively, two first connecting holes are respectively corresponding to the two mounting grooves, springs are respectively fixed to the inner bottom surfaces of the upper mounting grooves and the inner top surfaces of the lower mounting grooves, limit posts are respectively fixed to the top ends of the springs in the upper side, two limit posts are respectively rotatably inserted into the two mounting holes, fixing grooves are respectively formed in the inner top surfaces and the bottom surfaces of the first hinge seat, first connecting holes are respectively provided with mounting grooves, first gears are respectively fixed to the bottom surfaces of the second hinge rotating arms, two connecting holes are respectively connected with the two side of the second connecting holes respectively, two side of the second connecting holes are respectively connected with the inner surfaces of the second connecting holes respectively, two side of the second connecting holes are respectively, the side of the side connecting holes are respectively, two second fixing holes are formed in one side of the outer wall of the second hinge base, and second fixing bolts are inserted into the second fixing holes in a rotatable mode respectively.
Preferably, the inner walls of the two fixing grooves are respectively fixed with bearings, and the inner walls of the inner rings of the two bearings are respectively fixedly connected with the outer wall of the rotating column.
Preferably, two movable holes are formed in one side of the outer wall of the first hinge base, the two movable holes are respectively communicated with the two mounting holes, pressing plates are respectively and movably arranged in the two movable holes, pressing columns are respectively and movably arranged in the two mounting holes, and the two pressing columns are respectively and fixedly connected with the two pressing plates.
Preferably, the left side and the right side of the inner wall of the movable hole are respectively provided with a sliding groove, the left side and the right side of the outer wall of the pressing plate are respectively fixed with a sliding block, and the two sliding blocks are respectively and slidably arranged in the two sliding grooves.
Preferably, the threaded ends of the first fixing bolts are respectively slidably provided with a first gasket, and the threaded ends of the second fixing bolts are respectively slidably provided with a second gasket.
Preferably, two placing holes are formed in one side of the outer wall of the hinge rotating arm, fastening bolts are inserted into the two placing holes in a rotatable mode respectively, two threaded holes are formed in one side of the inner wall of the second hinge base, and the two threaded holes are connected with the two fastening bolts in a threaded mode respectively.
Preferably, a diversion trench is formed on one side of the outer wall of the hinge rotating arm.
Preferably, the thickness of the first hinge base is greater than the thickness of the second hinge base.
Compared with the prior art, the heavy door hinge with the self-returning function has the following beneficial effects:
1. in use, the whole installation of equipment heavy door is convenient for, and the disassembly is convenient for simultaneously to the staff of being convenient for maintains or changes the hinge rocking arm. When the heavy door is opened, the automatic closing is facilitated, the safety risk caused by negligence or forgetting to close the door is reduced, the need of manual closing of the door by a worker is eliminated, and the operation convenience of the heavy door is improved;
2. in use, when the hinge rotating arm and the second gear rotate, the bearing is beneficial to providing stable support, so that the correct positioning of the rotating column in the rotating process is facilitated, the stability of the heavy door during opening is improved, the rotating column is more smooth during rotation, the rotation is more labor-saving, and the heavy door of equipment is easier to open and close. The two pressing columns are respectively extruded with the two limiting columns, at the moment, the two springs are in an extrusion state, and when the two limiting columns are respectively far away from the inside of the two mounting holes, the hinge rotating arm can be detached from the first hinge seat, so that a worker can conveniently detach the hinge rotating arm, and the worker can conveniently maintain or replace the hinge rotating arm;
3. in use, the sliding chute and the sliding block are beneficial to limiting the pressing plate and the pressing column and preventing the pressing plate and the pressing column from shifting, so that the stability of the pressing plate and the pressing column during movement is improved. Through first gasket, second gasket, do benefit to when first hinge seat, second hinge seat install, reduce the first fixing bolt, second fixing bolt to the power of pulling of door frame, door plant to reduce the damage. The hinge rotating arm is convenient to assemble and disassemble from the second hinge seat by a worker through the fastening bolt and the threaded hole, so that the worker is facilitated to repair or replace the hinge rotating arm;
4. in use, the flow guiding groove is beneficial to guiding the lubricating oil, so that the lubricating oil can drop on the first gear, friction and abrasion between the first gear and the second gear are reduced, and the transmission efficiency is improved. The thickness of the first hinge seat is larger than that of the second hinge seat, so that the bearing performance and stability of the heavy door are enhanced, and the safety of the heavy door during opening and closing is improved.
Drawings
Fig. 1 is a perspective view of an embodiment.
Fig. 2 is an exploded perspective view of an embodiment.
Fig. 3 is an exploded perspective view of an embodiment at a hinge arm, a stop post.
Fig. 4 is an exploded perspective view of the second hinge base of the embodiment.
Fig. 5 is an exploded perspective view at a rotating column of the embodiment.
Fig. 6 is an enlarged view of fig. 2 a of the embodiment.
Fig. 7 is an enlarged view of fig. 2B of the embodiment.
In the figure: 1. a first hinge base; 2. a first fixing hole; 3. a first fixing bolt; 4. a mounting hole; 5. a hinge swivel arm; 6. a mounting groove; 7. a first gear; 8. a first connection hole; 9. a spring; 10. a limit column; 11. a fixing groove; 12. rotating the column; 13. a second gear; 14. a second connection hole; 15. a torsion spring; 16. a second hinge base; 17. a second fixing hole; 18. a second fixing bolt; 19. a bearing; 20. a movable hole; 21. pressing the plate; 22. pressing the column; 23. a chute; 24. a slide block; 25. a first gasket; 26. a second gasket; 27. placing the hole; 28. a fastening bolt; 29. a threaded hole; 30. and a diversion trench.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-7, a heavy door hinge with self-return function comprises a first hinge seat 1, a plurality of first fixing holes 2 are formed on one side of the outer wall of the first hinge seat 1, first fixing bolts 3 are respectively and rotatably inserted into the first fixing holes 2, mounting holes 4 are respectively formed on the inner bottom surface and the top surface of the first hinge seat 1, a hinge rotating arm 5 is rotatably arranged in the first hinge seat 1, mounting grooves 6 are respectively formed on the top surface and the bottom surface of the hinge rotating arm 5, first gears 7 are respectively fixed on the top surface and the bottom surface of the hinge rotating arm 5, first connecting holes 8 are respectively formed on the top surfaces of the two first gears 7, first connecting holes 8 respectively correspond to the two mounting grooves 6, springs 9 are respectively fixed on the inner bottom surfaces of the upper mounting grooves 6 and the inner top surfaces of the lower mounting grooves 6, limit posts 10 are respectively and rotatably inserted into the two mounting holes 4, torsion springs 13 are respectively and rotatably inserted into the inner bottom surfaces of the first hinge seat 1, first connecting holes 11 are respectively provided with the two torsion springs 13 respectively and rotatably connected with the two inner bottom surfaces of the two first connecting holes 13, a torsion spring 13 is fixedly connected with the inner bottom surfaces of the two first connecting holes 13, a torsion spring 13 is respectively fixed on the inner bottom surfaces of the two first connecting holes 13, a torsion spring 13 is respectively connected with the inner bottom surfaces of the two first connecting holes 13, a torsion spring 13 is respectively, a torsion spring 13 is rotatably fixedly connected with the inner bottom surface of the upper connecting holes 13, a second hinge seat 16 is detachably arranged on one side of the hinge rotating arm 5, two second fixing holes 17 are formed in one side of the outer wall of the second hinge seat 16, and second fixing bolts 18 are respectively inserted into the two second fixing holes 17 in a rotatable mode.
In use, a worker firstly fixes the first hinge base 1 on a structure of a door frame of a heavy door of equipment and the like for installing the heavy door of the equipment through a plurality of first fixing bolts 3, so that the whole installation of the heavy door of the equipment is facilitated, then fixes the second hinge base 16 on a door plate of the heavy door of the equipment through two second fixing bolts 18 for connection with the door plate, the worker is convenient to install the hinge rotating arm 5 on the first hinge base 1 through the springs 9 and the limit posts 10, and meanwhile, the disassembly is convenient, so that the worker is convenient to repair or replace the hinge rotating arm 5, when the worker opens the heavy door, the hinge rotating arm 5 and the two first gears 7 rotate, the two second gears 13 are driven to rotate, further, the two torsion springs 15 rotate to generate torque, and when the worker loosens the heavy door, the elastic potential energy of the two torsion springs 15 is released, so that the heavy door automatically rotates to be closed, and convenience and efficiency are provided. When the heavy door is opened, the automatic door closing device has a self-return function, is favorable for automatic closing, reduces the safety risk caused by negligence or forgetting to close the door, simultaneously eliminates the need of manual door closing of staff, and improves the operation convenience of the heavy door.
As shown in fig. 1-2 and fig. 4-7, the inner walls of the two fixing grooves 11 are respectively fixed with bearings 19, the inner walls of the inner rings of the two bearings 19 are respectively fixedly connected with the outer wall of the rotating column 12, two movable holes 20 are formed in one side of the outer wall of the first hinge base 1, the two movable holes 20 are respectively communicated with the two mounting holes 4, pressing plates 21 are respectively and movably arranged in the two movable holes 20, pressing columns 22 are respectively and movably arranged in the two mounting holes 4, and the two pressing columns 22 are respectively and fixedly connected with the two pressing plates 21.
In use, when the hinge rotating arm 5 and the second gear 13 rotate, the bearing 19 is beneficial to providing stable support, so that the correct positioning of the rotating column 12 in the rotating process is facilitated, the stability of the heavy door during opening is improved, the rotating column 12 is smoother during rotation, the rotation is more labor-saving, and the heavy door of equipment is easier to open and close. Through pressing the board 21, press the post 22, when the staff need dismantle hinge rocking arm 5 from first hinge seat 1, two pressing the board 21 of extrusion for two pressing the board 21, two press the post 22 and be close to each other, thereby make two press the post 22 respectively with two spacing posts 10 extrude, two springs 9 are in extrusion state this moment, when two spacing posts 10 keep away from the inside of two mounting holes 4 respectively, can dismantle hinge rocking arm 5 from first hinge seat 1, thereby be convenient for the staff dismantles hinge rocking arm 5, the staff of being convenient for maintains or changes.
As shown in fig. 1-4 and fig. 6-7, the left side and the right side of the inner wall of the two movable holes 20 are respectively provided with a sliding groove 23, the left side and the right side of the outer wall of the two pressing plates 21 are respectively fixed with sliding blocks 24, the two sliding blocks 24 are respectively and slidably arranged in the two sliding grooves 23, the threaded ends of a plurality of first fixing bolts 3 are respectively and slidably provided with a first gasket 25, the threaded ends of two second fixing bolts 18 are respectively and slidably provided with a second gasket 26, one side of the outer wall of the hinge rotating arm 5 is provided with two placing holes 27, the inside of each of the two placing holes 27 is respectively and rotatably inserted with a fastening bolt 28, one side of the inner wall of the second hinge seat 16 is provided with two threaded holes 29, and the two threaded holes 29 are respectively and spirally connected with the two fastening bolts 28.
In use, the slide grooves 23 and the slide blocks 24 are beneficial to limiting the pressing plate 21 and the pressing column 22 and preventing the pressing plate 21 and the pressing column 22 from shifting, so that the stability of the pressing plate 21 and the pressing column 22 during movement is improved. The first gasket 25 and the second gasket 26 are beneficial to reducing the pulling force of the first fixing bolt 3 and the second fixing bolt 18 on the door frame and the door plate when the first hinge seat 1 and the second hinge seat 16 are installed, thereby reducing damage. Through fastening bolt 28, screw hole 29, the staff of being convenient for will hinge rocking arm 5 from second hinge seat 16 dismouting, and then do benefit to the staff to maintain or change hinge rocking arm 5.
As shown in fig. 1 to 4 and fig. 6 to 7, a diversion trench 30 is formed on one side of the outer wall of the hinge arm 5, and the thickness of the first hinge seat 1 is greater than that of the second hinge seat 16.
In use, through the guiding gutter 30, the staff firstly drops the lubricating oil on the first gear 7 above, at this time, part of the lubricating oil can flow into the guiding gutter 30 from the first gear 7, and the lubricating oil drops on the first gear 7 below along the guiding gutter 30, so that the lubricating oil can be favorably guided, and the lubricating oil can drop on the first gear 7, thereby being favorable for reducing friction and abrasion between the first gear 7 and the second gear 13 and improving the transmission efficiency. The thickness of the first hinge base 1 is larger than that of the second hinge base 16, so that the bearing performance and stability of the heavy door are enhanced, and the safety of the heavy door during opening and closing is improved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (8)

1. The utility model provides a heavy door hinge with from function of turning back, includes first hinge seat (1), its characterized in that, a plurality of first fixed orifices (2) have been seted up to outer wall one side of first hinge seat (1), a plurality of inside rotatable plug-in of first fixed orifices (2) has first fixing bolt (3) respectively, mounting hole (4) have been seted up respectively to the inside bottom surface, the top surface of first hinge seat (1), inside rotatable be provided with hinge rocking arm (5) of first hinge seat (1), mounting groove (6) have been seted up respectively to the top surface, the bottom surface of hinge rocking arm (5), the top surface, the bottom surface of hinge rocking arm (5) are fixed with first gear (7) respectively, two the top surface of first gear (7) has been seted up first connecting hole (8) respectively, two first connecting hole (8) correspond respectively with two mounting groove (6), the inside bottom surface of mounting groove (6) of top and the inside top surface of below are fixed with spring (9) respectively, the top surface of top (9) and the inside of side mounting groove (6) are fixed with spring (9) respectively, the top surface of top surface (10) is fixed with two tops of side respectively in the hinge rocking arm (5) respectively, the top surface (10) is fixed with two top surfaces of side (10) respectively, the rotatable rotation post (12) that is provided with between fixed slot (11), the outer wall of rotation post (12) is equipped with two second gears (13), two second gears (13) mesh with two first gears (7) respectively, two second connecting hole (14) have been seted up respectively to the top surface of second gears (13), two the inner wall of second connecting hole (14) respectively with the outer wall fixed connection of rotation post (12), the top surface of second gears (13) and the bottom surface of second gears (13) of below are fixed with torsional spring (15) respectively, the top of torsional spring (15) of top and the bottom of torsional spring (15) of below respectively with the inside top surface, the bottom surface fixed connection of first hinge seat (1), one side detachable of hinge arm (5) is provided with second hinge seat (16), two second fixed orifices (17) have been seted up to outer wall one side of second hinge seat (16), two inside rotatable second bolt (18) that inserts of second fixed orifices (17) respectively.
2. A heavy duty door hinge with self-returning function as claimed in claim 1, wherein: the inner walls of the two fixing grooves (11) are respectively fixed with bearings (19), and the inner walls of the inner rings of the two bearings (19) are respectively fixedly connected with the outer wall of the rotating column (12).
3. A heavy duty door hinge with self-returning function as claimed in claim 2, wherein: two movable holes (20) are formed in one side of the outer wall of the first hinge base (1), the two movable holes (20) are respectively communicated with two mounting holes (4), pressing plates (21) are respectively and movably arranged in the two movable holes (20), pressing columns (22) are respectively and movably arranged in the two mounting holes (4), and the two pressing columns (22) are respectively and fixedly connected with the two pressing plates (21).
4. A heavy duty door hinge with self-returning function as claimed in claim 3, wherein: sliding grooves (23) are respectively formed in the left side and the right side of the inner wall of the two movable holes (20), sliding blocks (24) are respectively fixed on the left side and the right side of the outer wall of the two pressing plates (21), and the two sliding blocks (24) are respectively slidably arranged in the two sliding grooves (23).
5. A heavy duty door hinge with self-returning function as claimed in claim 4, wherein: the threaded ends of the first fixing bolts (3) are respectively slidably provided with a first gasket (25), and the threaded ends of the second fixing bolts (18) are respectively slidably provided with a second gasket (26).
6. A heavy duty door hinge with self-returning function as claimed in claim 5, wherein: two placing holes (27) are formed in one side of the outer wall of the hinge rotating arm (5), fastening bolts (28) are rotatably inserted into the two placing holes (27), two threaded holes (29) are formed in one side of the inner wall of the second hinge seat (16), and the two threaded holes (29) are in threaded connection with the two fastening bolts (28) respectively.
7. A heavy duty door hinge with self-returning function as claimed in claim 1, wherein: and one side of the outer wall of the hinge rotating arm (5) is provided with a diversion trench (30).
8. A heavy duty door hinge with self-returning function as claimed in claim 1, wherein: the thickness of the first hinge base (1) is larger than that of the second hinge base (16).
CN202311689020.XA 2023-12-11 2023-12-11 Heavy door hinge with self-return function Pending CN117627484A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311689020.XA CN117627484A (en) 2023-12-11 2023-12-11 Heavy door hinge with self-return function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311689020.XA CN117627484A (en) 2023-12-11 2023-12-11 Heavy door hinge with self-return function

Publications (1)

Publication Number Publication Date
CN117627484A true CN117627484A (en) 2024-03-01

Family

ID=90018122

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311689020.XA Pending CN117627484A (en) 2023-12-11 2023-12-11 Heavy door hinge with self-return function

Country Status (1)

Country Link
CN (1) CN117627484A (en)

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