CN109138802A - A kind of highly-safe fire resistance rolling shutter door - Google Patents

A kind of highly-safe fire resistance rolling shutter door Download PDF

Info

Publication number
CN109138802A
CN109138802A CN201811177165.0A CN201811177165A CN109138802A CN 109138802 A CN109138802 A CN 109138802A CN 201811177165 A CN201811177165 A CN 201811177165A CN 109138802 A CN109138802 A CN 109138802A
Authority
CN
China
Prior art keywords
door
fixed
plate
wall
spring
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.)
Granted
Application number
CN201811177165.0A
Other languages
Chinese (zh)
Other versions
CN109138802B (en
Inventor
孙伯山
李章�
顾蓓
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.)
Taizhou Zhiyi Door Industry Co Ltd
Original Assignee
Taizhou Zhiyi Door Industry 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 Taizhou Zhiyi Door Industry Co Ltd filed Critical Taizhou Zhiyi Door Industry Co Ltd
Priority to CN201811177165.0A priority Critical patent/CN109138802B/en
Publication of CN109138802A publication Critical patent/CN109138802A/en
Application granted granted Critical
Publication of CN109138802B publication Critical patent/CN109138802B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/15Roller shutters with closing members formed of slats or the like
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/17Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/17Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • E06B9/17046Bottom bars
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/60Spring drums operated only by closure members
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/15Roller shutters with closing members formed of slats or the like
    • E06B2009/1505Slat details
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/15Roller shutters with closing members formed of slats or the like
    • E06B2009/1577Slat end pieces used for guiding shutter
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08Roll-type closures
    • E06B9/11Roller shutters
    • E06B9/15Roller shutters with closing members formed of slats or the like
    • E06B2009/1577Slat end pieces used for guiding shutter
    • E06B2009/1594Slat end pieces used for guiding shutter attached to outer surface of slat

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Special Wing (AREA)

Abstract

The invention discloses a kind of highly-safe fire resistance rolling shutter doors, including wall, shell, shaft, spring case, scroll spring, door-plate, sliding block, security bar, U-board, snap-gauge, threaded rod, knob and T-shaped block, wall side is fixed with shell, and outer casing bottom is in opening setting, interior of shell is fixed with shaft, both ends of the shaft is symmetrically rotatably connected to spring case by bearing, spring case inner wall is provided with scroll spring, scroll spring one end is fixedly connected with shaft, and the scroll spring other end is fixedly connected with spring case, door-plate is fixed on the outside of two spring cases in shaft, door-plate two sides are equidistantly fixed with sliding block, and two adjacent sliding blocks are rotatablely connected by hinge on door-plate, door-plate is fixed with security bar far from one end of spring case, the highly-safe fire resistance rolling shutter door can reduce the door-plate probability bad by big wind, improve peace Quan Xing, and construction is simple, it is at low cost, it is used convenient for people.

Description

A kind of highly-safe fire resistance rolling shutter door
Technical field
The present invention relates to rolling screen door technical fields, and in particular to a kind of highly-safe fire resistance rolling shutter door.
Background technique
Rolling screen door is cascaded with the movable door piece of multi-joint, in fixed slideway, with spool above door is Door above and below heart rotation.Rolling screen door is usually widely used in shop, but the door-plate quality of existing rolling screen door is softer, is scraping It in the case where strong wind, is easy to be bent door-plate, to be detached from track, and then damages door-plate, safety is lower, and existing Rolling-door structure it is complicated, higher cost, for this purpose, it is proposed that a kind of highly-safe fire resistance rolling shutter door.
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art, and provide that a kind of structure is simple, at low cost, safety High highly-safe fire resistance rolling shutter door, including wall, shell, shaft, spring case, scroll spring, door-plate, sliding block, security bar, U-board, snap-gauge, threaded rod, knob and T-shaped block, the wall side is fixed with shell, and outer casing bottom is in opening setting, institute It states interior of shell and is fixed with shaft, the both ends of the shaft is symmetrically rotatably connected to spring case, the spring case inner wall by bearing It is provided with scroll spring, described scroll spring one end is fixedly connected with shaft, and the scroll spring other end and the fixed company of spring case It connects, is fixed with door-plate on the outside of two in the shaft spring case, the door-plate two sides are equidistantly fixed with sliding block, and on door-plate Two adjacent sliding blocks are rotatablely connected by hinge, and the door-plate is fixed with security bar, the wall far from one end of spring case Side close to shell is symmetrically fixed with U-board, and sliding block and security bar both ends are slidably connected with U-board inner wall, the U-shaped Plate inner wall slidably connects snap-gauge, and side of the snap-gauge far from wall is rotatably connected to threaded rod, the U-board by bearing Side close to threaded rod offers threaded hole, and threaded rod is threadedly coupled with threaded hole, and described threaded rod one end passes through screw thread Hole is fixed with knob, and the snap-gauge is equidistantly fixed with T-shaped block far from the side of door-plate, and the U-board is close to the side etc. of T-shaped block Away from offering the T-slot matched with T-shaped block, and T-shaped block is slidably connected with T-slot.
Preferably, the security bar both ends are symmetrically fixed with limited block close to the side of wall, the U-board inner wall is leaned on The side of nearly limited block offers limiting slot, and limited block is slidably connected with limiting slot.
Preferably, the security bar is fixed with handle far from a middle side part of wall.
Preferably, the security bar bottom is fixed with rubber pad.
Preferably, the wavy setting of door-plate.
The beneficial effects of the present invention are:
1, in use, pull handle is to drive security bar to move upwards, so that door-plate is driven to move upwards, door-plate one end It is fixed with spring case, scroll spring one end is fixed with spring case, and one end is fixed with shaft, and door-plate upward sliding drives spring case to exist It is rotated in shaft, gives spring case one power by scroll spring, make spring case continue to rotate, to door-plate be rolled, security bar On limited block slided in limiting slot, security bar is limited, prevents door-plate from involving in shell completely, close rolling screen door When, pull handle moves downward, so that door-plate be driven to move downward, completes to close the door, when there is strong wind, and turning knob, thus It drives threaded rod to rotate in threaded hole, so that it is mobile to make threaded rod, so that snap-gauge be driven to slide, squeezes sliding block, press from both sides sliding block Tightly, to enhance the stability between door-plate and U-board, the door-plate probability bad by big wind is reduced, safety is improved.
2, the power rotated by scroll spring to spring case one, to make the door-plate on spring case during rising One upward power, so that people be allow to fully open in the local door-plate reached, door-plate both ends are equidistantly fixed with sliding block, Sliding block slides in U-board, ensure that the stability of door-plate sliding, the limited block on security bar when door-plate fully opens, with The top of limiting slot contacts, and limits to security bar, so that end of door plate is limited, completes rolling screen door by simple structure Folding, manufacturing cost is low, and using safe, uses convenient for people.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is whole dissection structural schematic diagram of the invention;
Fig. 2 is sliding block anatomical structure schematic diagram of the invention;
Fig. 3 is that U-board of the invention overlooks anatomical structure schematic diagram;
Fig. 4 is that U-board of the invention faces anatomical structure schematic diagram;
Fig. 5 is shell anatomical structure schematic diagram of the invention.
In figure: 1, wall;2, shell;3, shaft;4, spring case;5, scroll spring;6, door-plate;7, sliding block;8, security bar; 9, U-board;10, snap-gauge;11, threaded rod;12, knob;13, T-shaped block;14, T-slot;15, limited block;16, limiting slot;17, Hand;18, rubber pad.
Specific embodiment
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics ?.
The highly-safe fire resistance rolling shutter door of one kind as Figure 1-Figure 5, including wall 1, shell 2, shaft 3, spring case 4, scroll spring 5, door-plate 6, sliding block 7, security bar 8, U-board 9, snap-gauge 10, threaded rod 11, knob 12 and T-shaped block 13, the wall 1 side of body is fixed with shell 2, and 2 bottom of shell is arranged in opening, is fixed with shaft 3,3 liang of the shaft inside the shell 2 End is symmetrically rotatably connected to spring case 4 by bearing, and 4 inner wall of spring case is provided with scroll spring 5, the scroll spring 5 One end is fixedly connected with shaft 3, and 5 other end of scroll spring is fixedly connected with spring case 4, two springs in the shaft 3 Door-plate 6 is fixed on the outside of shell 4,6 two sides of door-plate are equidistantly fixed with sliding block 7, and two sliding blocks 7 adjacent on door-plate 6 are logical Hinge rotation connection is crossed, the door-plate 6 is fixed with security bar 8 far from one end of spring case 4, and the wall 1 is close to the one of shell 2 Side is symmetrically fixed with U-board 9, and sliding block 7 and 8 both ends of security bar are slidably connected with 9 inner wall of U-board, 9 inner wall of U-board Snap-gauge 10 is slidably connected, the side of the snap-gauge 10 far from wall 1 is rotatably connected to threaded rod 11, the U-shaped by bearing Plate 9 offers threaded hole close to the side of threaded rod 11, and threaded rod 11 is threadedly coupled with threaded hole, described 11 one end of threaded rod It is fixed with knob 12 across threaded hole, the side of the snap-gauge 10 far from door-plate 6 is equidistantly fixed with T-shaped block 13, the U-board 9 The T-slot 14 matched with T-shaped block 13 is equidistantly offered close to the side of T-shaped block 13, and T-shaped block 13 and the sliding of T-slot 14 connect It connects.
8 both ends of security bar are symmetrically fixed with limited block 15 close to the side of wall 1, and 9 inner wall of U-board is close to limit The side of position block 15 offers limiting slot 16, and limited block 15 is slidably connected with limiting slot 16, convenient for limiting security bar 8 Position, so that end of door plate 6 is limited.
The security bar 8 is fixed with handle 17 far from a middle side part of wall 1, convenient for pulling door-plate 6.
8 bottom of security bar is fixed with rubber pad 18, convenient for reducing the sound of security bar 8 and collision on the ground at closing time.
The wavy setting of the door-plate 6 improves the intensity of door-plate 6.
The working principle of the present embodiment is as follows: in use, pull handle 17 to driving security bar 8 to move upwards, To drive door-plate 6 to move upwards, 6 one end of door-plate and spring case 4 are fixed, and 5 one end of scroll spring and spring case 4 are fixed, one end Fixed with shaft 3,6 upward sliding of door-plate drives spring case 4 to rotate in shaft 3, gives spring case 4 one by scroll spring 5 Power rotates spring case 4 persistently, so that door-plate 6 be rolled, the limited block 15 on security bar 8 slides in limiting slot 16, to anti- Guard strip 8 is limited, and prevents door-plate 6 from involved in shell 2 completely, and when closing rolling screen door, pull handle 17 is moved downward, thus band Dynamic door-plate 6 moves downward, and completes to close the door, when there is strong wind, turning knob 12, so that threaded rod 11 be driven to turn in threaded hole It is dynamic, so that it is mobile to make threaded rod 11, so that snap-gauge 10 be driven to slide, sliding block 7 is squeezed, clamps sliding block 7, to enhance door-plate 6 With the stability between U-board 9, the probability bad by big wind of door-plate 6 is reduced.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (5)

1. a kind of highly-safe fire resistance rolling shutter door, including wall (1), shell (2), shaft (3), spring case (4), scroll spring (5), door-plate (6), sliding block (7), security bar (8), U-board (9), snap-gauge (10), threaded rod (11), knob (12) and T-shaped block (13), it is characterised in that: wall (1) side is fixed with shell (2), and shell (2) bottom is in opening setting, the shell (2) internal to be fixed with shaft (3), shaft (3) both ends are symmetrically rotatably connected to spring case (4), the spring by bearing Shell (4) inner wall is provided with scroll spring (5), and described scroll spring (5) one end is fixedly connected with shaft (3), and scroll spring (5) The other end is fixedly connected with spring case (4), is fixed with door-plate (6) on the outside of two spring cases (4) on the shaft (3), described Door-plate (6) two sides are equidistantly fixed with sliding block (7), and two sliding blocks (7) adjacent on door-plate (6) are rotatablely connected by hinge, The door-plate (6) is fixed with security bar (8) far from the one end of spring case (4), side pair of the wall (1) close to shell (2) Title is fixed with U-board (9), and sliding block (7) and security bar (8) both ends are slidably connected with U-board (9) inner wall, the U-board (9) inner wall slidably connects snap-gauge (10), and the snap-gauge (10) is rotatably connected to screw thread by bearing far from the side of wall (1) Bar (11), the U-board (9) offer threaded hole, and threaded rod (11) and threaded hole screw thread close to the side of threaded rod (11) Connection, described threaded rod (11) one end pass through threaded hole and are fixed with knob (12), side of the snap-gauge (10) far from door-plate (6) It is equidistantly fixed with T-shaped block (13), the U-board (9) equidistantly offers close to the side of T-shaped block (13) to be matched with T-shaped block (13) The T-slot (14) of conjunction, and T-shaped block (13) is slidably connected with T-slot (14).
2. the highly-safe fire resistance rolling shutter door of one kind according to claim 1, it is characterised in that: the security bar (8) two The side close to wall (1) is held to be symmetrically fixed with limited block (15), side of U-board (9) inner wall close to limited block (15) It offers limiting slot (16), and limited block (15) is slidably connected with limiting slot (16).
3. the highly-safe fire resistance rolling shutter door of one kind according to claim 1, it is characterised in that: the security bar (8) is remote A middle side part from wall (1) is fixed with handle (17).
4. the highly-safe fire resistance rolling shutter door of one kind according to claim 1, it is characterised in that: security bar (8) bottom Portion is fixed with rubber pad (18).
5. the highly-safe fire resistance rolling shutter door of one kind according to claim 1, it is characterised in that: the door-plate (6) is in wave Shape wave setting.
CN201811177165.0A 2018-10-09 2018-10-09 Fireproof rolling shutter door with high safety Active CN109138802B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811177165.0A CN109138802B (en) 2018-10-09 2018-10-09 Fireproof rolling shutter door with high safety

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811177165.0A CN109138802B (en) 2018-10-09 2018-10-09 Fireproof rolling shutter door with high safety

Publications (2)

Publication Number Publication Date
CN109138802A true CN109138802A (en) 2019-01-04
CN109138802B CN109138802B (en) 2024-03-29

Family

ID=64810857

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811177165.0A Active CN109138802B (en) 2018-10-09 2018-10-09 Fireproof rolling shutter door with high safety

Country Status (1)

Country Link
CN (1) CN109138802B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111437540A (en) * 2020-04-09 2020-07-24 杨寿宝 Fire valve of ventilating duct
CN112412290A (en) * 2020-11-17 2021-02-26 黄山市富源门业有限公司 Fireproof rolling shutter door with guide function

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203974485U (en) * 2014-07-23 2014-12-03 董国樑 A kind of double-decker car blinds
CN206360607U (en) * 2017-01-11 2017-07-28 王振发 A kind of double curtain double track fire resistance rolling shutter doors of energy saving
CN207499772U (en) * 2017-09-29 2018-06-15 河南广城幕墙装饰工程有限公司 Outer sunshade roller shutter window
CN207647440U (en) * 2017-12-06 2018-07-24 怀来建军钢结构有限公司 A kind of fire-proof and theft-proof rolling screen door
CN108533151A (en) * 2018-05-19 2018-09-14 陈素钦 A kind of fire prevention steel multi-vane roll door
CN209398307U (en) * 2018-10-09 2019-09-17 泰州智艺门业有限公司 A kind of highly-safe fire resistance rolling shutter door

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203974485U (en) * 2014-07-23 2014-12-03 董国樑 A kind of double-decker car blinds
CN206360607U (en) * 2017-01-11 2017-07-28 王振发 A kind of double curtain double track fire resistance rolling shutter doors of energy saving
CN207499772U (en) * 2017-09-29 2018-06-15 河南广城幕墙装饰工程有限公司 Outer sunshade roller shutter window
CN207647440U (en) * 2017-12-06 2018-07-24 怀来建军钢结构有限公司 A kind of fire-proof and theft-proof rolling screen door
CN108533151A (en) * 2018-05-19 2018-09-14 陈素钦 A kind of fire prevention steel multi-vane roll door
CN209398307U (en) * 2018-10-09 2019-09-17 泰州智艺门业有限公司 A kind of highly-safe fire resistance rolling shutter door

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111437540A (en) * 2020-04-09 2020-07-24 杨寿宝 Fire valve of ventilating duct
CN112412290A (en) * 2020-11-17 2021-02-26 黄山市富源门业有限公司 Fireproof rolling shutter door with guide function

Also Published As

Publication number Publication date
CN109138802B (en) 2024-03-29

Similar Documents

Publication Publication Date Title
CN109138802A (en) A kind of highly-safe fire resistance rolling shutter door
CN209398307U (en) A kind of highly-safe fire resistance rolling shutter door
CN210217523U (en) Wind direction adjusting window system applied to intelligent classroom and intelligent classroom
CN207485278U (en) It is a kind of to facilitate urgent rescue door and window structure
CN104343299A (en) Windproof door
CN101338640B (en) Mobile flat-open energy-saving composite window capable of rotating 180 degree
EP2343429A3 (en) Support device for a leaf pivotable relative to the frame
CN208294388U (en) A kind of sand prevention rain-proof double-layer electric shutter
CN111305648B (en) Locking bar clamping and fixing device of intelligent door lock
CN207863673U (en) A kind of door leaf positioning device
CN207944867U (en) Outdoor base station anti-theft louver
CN207513529U (en) A kind of roller shutter drawstring counter weight device
CN206880272U (en) A kind of welder easy to remove
CN207776695U (en) A kind of double window with anti-mosquito function
CN208005576U (en) A kind of filter core manual compression mechanism
CN111677333A (en) A quick response device that is used for zero hour to strengthen building structure stability
CN110360420A (en) A kind of anti-theft image pick-up head with reset function
CN206523546U (en) A kind of ammeter box
CN204960681U (en) Put aside integral type window body structure
CN211736882U (en) Aluminum alloy door and window convenient for drainage
CN218844061U (en) Electric smoke exhaust window for limited space
CN108301711A (en) One kind can random positioned timber
CN214996912U (en) Quick-adjusting multifunctional hinge
CN209538984U (en) Door and window automatic switch device
CN219387651U (en) Improved aluminium alloy door and window

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant