CN111734278A - Prevent fire door that unexpected closed - Google Patents
Prevent fire door that unexpected closed Download PDFInfo
- Publication number
- CN111734278A CN111734278A CN202010749319.XA CN202010749319A CN111734278A CN 111734278 A CN111734278 A CN 111734278A CN 202010749319 A CN202010749319 A CN 202010749319A CN 111734278 A CN111734278 A CN 111734278A
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- CN
- China
- Prior art keywords
- magnetic part
- door
- cavity
- door frame
- magnetic
- 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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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/56—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by magnetic or electromagnetic attraction or operated by electric or electromagnetic means
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- 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
- E05F5/00—Braking devices, e.g. checks; Stops; Buffers
- E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
- E06B1/04—Frames for doors, windows, or the like to be fixed in openings
- E06B1/52—Frames specially adapted for doors
- E06B1/526—Frames specially adapted for doors for door wings that can be set up to open either left or right, outwards or inwards, e.g. provided with grooves for easily detachable hinges or latch plates
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Special Wing (AREA)
Abstract
The invention discloses a fire door capable of preventing accidental closing, wherein a first cavity is arranged in an upper door frame, a rotating piece is arranged in the first cavity, a winding drum is arranged above a rotating shaft and connected with a first magnetic piece through a first pull rope, when the door panel is closed at an excessively high rotating speed, a second magnetic piece does not slide together with the first magnetic piece, a third magnetic piece is arranged outside a groove, a fourth magnetic piece and a third magnetic piece arranged on the door panel repel each other to rebound the door panel, when the door panel is closed at a low speed, the first magnetic piece and the second magnetic piece move together to move the third magnetic piece into the groove, at the moment, the door can be normally closed, the door panel can be prevented from being accidentally closed when ventilation is needed, and the continuous ventilation is realized.
Description
Technical Field
The invention relates to the technical field of doors, in particular to a fireproof door capable of preventing accidental closing.
Background
The fireproof door is a door capable of meeting the requirements of fire-resistant stability, integrity and heat insulation within a certain time, has the functions of preventing fire from spreading and smoke from spreading besides the function of a common door, can prevent the fire from spreading within a certain time and ensure the evacuation of people, and is installed in a room for preventing accidents in the prior art.
In a room, ventilation is usually needed, ventilation generally refers to that a window and a door on the same side are opened together, and in the time when no one is at home, the door is often accidentally closed by wind blown from the window, so that the ventilation effect cannot be realized.
Disclosure of Invention
The present invention addresses the deficiencies in the prior art by providing a fire rated door that prevents accidental closure.
In order to solve the technical problems, the invention is solved by the following technical scheme: prevent that fire door that accident closed includes door plant and door frame, the door plant passes through rotation axis connection and is in on the door frame, the door frame includes door frame, lower door frame, left door frame and right door frame, its characterized in that: the upper door frame is provided with a first cavity, the rotating shaft is positioned in the first cavity, the rotating shaft is provided with a winding drum, one side of the first cavity is provided with a second cavity, the first magnetic part is arranged in the second cavity in a sliding manner, one end of a first pull rope is fixed on the winding drum, the other end of the first pull rope is connected with the first magnetic part, and the first magnet is connected to the left door frame through a first elastic part; the second magnetic part is arranged in the second cavity, the groove is formed in the right door frame, the third magnetic part slides in the groove and is connected with the groove through the second elastic part, the second magnetic part and the third magnetic part are connected through the second pull rope, and the fourth magnetic part is arranged on the door plate. When the door panel is closed slowly, the first magnetic part and the second magnetic part are magnetically connected, and when the door panel is closed quickly, the first magnetic part and the second magnetic part are disconnected.
In the above scheme, preferably, a limiting block is disposed in the second cavity and on one side of the second magnetic member.
In the above scheme, preferably, the second cavity is provided with the limiting blocks at the upper and lower parts.
In the above aspect, preferably, the contact point of the first magnetic member and the contact point of the second magnetic member are homopolar magnetic members.
In the above aspect, the contact point of the third magnetic member and the contact point of the fourth magnetic member are preferably heteropolar magnetic members.
In the above aspect, the first cord and the second cord are preferably made of a non-elastic material.
The invention has the beneficial effects that: through setting up first cavity in last door frame, will rotate the piece setting in first cavity, set up the bobbin above the axis of rotation, the bobbin passes through first stay cord and first magnetic part and connects, and when slew velocity was too fast, the door plant is when closing, second magnetic part does not slide with first magnetic part together, third magnetic part is in the recess outside, and the fourth magnetic part and the third magnetic part that set up on the door plant repel each other and bounce back the door plant, when closing the door at a slow speed, first magnetic part and second magnetic part together remove, will third magnetic part removes to the recess in, can normally close the door this moment, realizes preventing that the door plant can be closed by accident when needs ventilate, realizes ventilating always.
Drawings
Fig. 1 is a schematic structural diagram of the present invention in a state of rapid door closing.
Fig. 2 is a partial sectional view of a doorframe in accordance with the present invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1, the door panel 2 is rotatably connected to the door frame 1, the door frame 1 includes an upper door frame 11, a lower door frame 12, a left door frame 13 and a right door frame 14, a rotation shaft 3 is provided between the upper door frame 11 and the door panel 2, the rotation shaft 3 is also provided between the lower door frame 12 and the door panel 2, and the door panel 2 can be normally opened and closed under the action of external force.
A first cavity 4 is arranged in the upper door frame 11, the rotating shaft 3 is arranged in the first cavity 4, the bobbin 5 is arranged on the upper side of the rotating shaft 3, and the bobbin 5 is fixed on the rotating shaft 3, that is, the rotating shaft 3 rotates to drive the bobbin 5 to rotate.
The second cavity 6 is arranged at one side of the first cavity 4, the first magnetic member 7 is arranged at the left side of the second cavity 6 and close to the side of the first cavity 4, referring to fig. 2, the first magnetic member 7 is arranged and connected to the left door frame 13 through the first elastic member 61, one end of the first pull rope 62 is fixed on the bobbin, preferably by winding, and the other end of the first pull rope 62 is fixed on the first magnetic member 7.
The right side of the first magnetic part 7 is provided with a second magnetic part 8, the second magnetic part 8 slides in the second cavity, a groove 10 is formed in a right doorsill 14, the groove 10 is connected with a third magnetic part 9 in a sliding mode, the third magnetic part 9 is connected with the inner wall of the groove 10 through a second elastic part 101, and a second pull rope 64 is arranged to connect the second magnetic part 8 with the third magnetic part 9.
When the door panel is opened, the first magnetic part 7 and the second magnetic part 8 are magnetically connected, if the first magnetic part 7 and the second magnetic part 8 move leftwards together, the third magnetic part 9 compresses the second elastic part 101 under the pulling force of the second pull rope 64, and the third magnetic part 9 is placed in the groove 10, so that the door panel 2 can be normally closed; when the first magnetic part 7 and the second magnetic part 8 are disconnected, the first magnetic part 7 continues to move leftwards, the second magnetic part 8 slides rightwards and is clamped by a limiting block 63 arranged in the second cavity 6, the third magnet 9 is ejected out by a spring, and the first pull rope 62 and the second pull rope 64 are made of non-elastic materials, so that the pulling force is more stable.
The fourth magnetic part 21 is arranged on the door panel 2 at a position corresponding to the third magnetic part 9, and the surface of the third magnetic part 9 contacting with the fourth magnetic part 21 is a homopolar magnetic part, for example, if the door panel 2 is closed and the third magnetic part 3 is ejected, the door panel 2 rotates reversely under the principle that the repulsive force and the mutual action of the magnetic force act on the door panel 2.
The working principle is as follows: the door panel 2 rotates around the rotating shaft 3 as a circle center to open and close under the action of external force, the door panel 2 is opened, and the window is opened at the same time, which is a common way of natural ventilation of a room, at this time, if wind blows to the door panel 2, the door panel 2 is closed, the room cannot ventilate, when the wind gradually blows to one side of the door panel 2, the windward side is smaller, the door panel 2 slightly rotates, namely, the rotating shaft 3 also rotates, the rotating shaft 3 drives the winding drum 5 to rotate together, the winding drum 5 pulls the first pull rope 62 leftwards, namely, the first magnetic part 7 is driven to move leftwards, the contact point of the first magnetic part 7 and the contact point of the second magnetic part 8 are heteropolar magnetic parts, the first magnetic part 7 drives the magnetically connected second magnetic part 8 to move leftwards together, the wind continuously blows, the windward side at this time is enlarged, the rotating speed is increased, that is, the greater the acceleration, the greater the rotating force of the door panel 2 gradually increases, so the first magnetic member 7 is disengaged from the second magnetic member 8, the first magnetic member 7 continues to slide leftward, the second magnetic member 8 moves rightward under the influence of gravity and elasticity, a part of the third magnetic member 9 is placed outside the groove 10, when the door panel is closed, the contact surface between the third magnetic member 9 and the fourth magnetic member 21 is a homopolar magnetic member, so the door panel 2 rotates in the opposite direction, the open state is maintained, and when the door panel rotates reversely, the first magnetic member 7 moves rightward under the action of the first elastic member 61 and is connected with the second magnetic member 8 again; when the door is slightly closed, because the speed of rotating the door panel 2 is slow, the time is long, the value of the acceleration is small, that is, the rotating force of the rotating shaft 3 is small, the first magnetic member 7 and the second magnetic member 8 cannot be disconnected, that is, the second magnetic member 8 and the first magnetic member 7 move leftward together, the third magnetic member 9 moves the third magnetic member 9 to the inner side of the groove 10 under the action of the second pull rope 64, and when the door panel 2 is closed, the normal closing of the door panel 2 is not affected by the third magnetic member 9 in the groove 10.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. Prevent fire door that accident closed, including door plant (2) and door frame (1), door plant (2) are connected through axis of rotation (3) on door frame (1), door frame (1) are including last door frame (11), lower door frame (12), left door frame (13) and right door frame (14), its characterized in that: a first cavity (4) is arranged on an upper door frame (11), the rotating shaft (3) is positioned in the first cavity (4), a winding reel (5) is arranged on the rotating shaft (3), a second cavity (6) is arranged on one side of the first cavity (4), a first magnetic part (7) is arranged to slide in the second cavity (6), one end of a first pull rope (62) is fixed on the winding reel (5), the other end of the first pull rope is connected with the first magnetic part (7), and the first magnet (7) is connected to a left door frame (13) through a first elastic part (61);
a second magnetic part (8) is arranged in the second cavity (6), a groove (10) is formed in the right door frame (14), a third magnetic part (9) is arranged in the groove (10) in a sliding mode, the third magnetic part (9) is connected with the groove (10) through a second elastic part (101), the second magnetic part (8) is connected with the third magnetic part (9) through a second pull rope (64), and a fourth magnetic part (21) is arranged on the door panel (2);
when the door panel (2) is closed slowly, the first magnetic part (7) and the second magnetic part (8) are magnetically connected, and when the door panel (2) is closed quickly, the first magnetic part (7) and the second magnetic part (8) are disconnected.
2. The fire rated door as recited in claim 1, wherein: a limiting block (63) is arranged in the second cavity (6) and on one side of the second magnetic part (8).
3. The fire rated door as recited in claim 2, wherein: limiting blocks (63) are arranged on the upper and lower sides of the second cavity (6).
4. The fire rated door as recited in claim 1, wherein: the contact point of the first magnetic part (7) and the contact point of the second magnetic part (8) are homopolar magnetic parts.
5. The fire rated door as recited in claim 1, wherein: the contact point of the third magnetic part (9) and the contact point of the fourth magnetic part (21) are heteropolar magnetic parts.
6. The fire rated door as recited in claim 1, wherein: the first pull cord (62) and the second pull cord (64) are made of a non-elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749319.XA CN111734278B (en) | 2020-07-30 | 2020-07-30 | Prevent fire door that unexpected closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010749319.XA CN111734278B (en) | 2020-07-30 | 2020-07-30 | Prevent fire door that unexpected closed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111734278A true CN111734278A (en) | 2020-10-02 |
| CN111734278B CN111734278B (en) | 2021-07-23 |
Family
ID=72656548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010749319.XA Active CN111734278B (en) | 2020-07-30 | 2020-07-30 | Prevent fire door that unexpected closed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111734278B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115321321A (en) * | 2022-08-22 | 2022-11-11 | 苏州默顿快速电梯有限公司 | Construction elevator cage and automatic cage door |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2250778A (en) * | 1990-11-21 | 1992-06-17 | Glyn Trevor | Door or window restraint |
| US20060170225A1 (en) * | 2005-02-03 | 2006-08-03 | Macken John A | Energy absorbing magnetic coupling device |
| CN204552409U (en) * | 2015-04-30 | 2015-08-12 | 孔靖 | A kind of device preventing door from automatically closing |
| CN208330103U (en) * | 2018-04-17 | 2019-01-04 | 天津市格林门业有限公司 | A kind of fire resistant doorsets convenient for ventilation |
| CN210738333U (en) * | 2019-09-03 | 2020-06-12 | 桂林航天工业学院 | Access control device |
-
2020
- 2020-07-30 CN CN202010749319.XA patent/CN111734278B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2250778A (en) * | 1990-11-21 | 1992-06-17 | Glyn Trevor | Door or window restraint |
| US20060170225A1 (en) * | 2005-02-03 | 2006-08-03 | Macken John A | Energy absorbing magnetic coupling device |
| CN204552409U (en) * | 2015-04-30 | 2015-08-12 | 孔靖 | A kind of device preventing door from automatically closing |
| CN208330103U (en) * | 2018-04-17 | 2019-01-04 | 天津市格林门业有限公司 | A kind of fire resistant doorsets convenient for ventilation |
| CN210738333U (en) * | 2019-09-03 | 2020-06-12 | 桂林航天工业学院 | Access control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115321321A (en) * | 2022-08-22 | 2022-11-11 | 苏州默顿快速电梯有限公司 | Construction elevator cage and automatic cage door |
| CN115321321B (en) * | 2022-08-22 | 2023-06-23 | 苏州默顿快速电梯有限公司 | Construction elevator cage and automatic cage door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111734278B (en) | 2021-07-23 |
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