CN111894420A

CN111894420A - Fire-proof window

Info

Publication number: CN111894420A
Application number: CN202010764411.3A
Authority: CN
Inventors: 冯杰慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-02
Filing date: 2020-08-02
Publication date: 2020-11-06

Abstract

The invention provides a fireproof window, which comprises a window frame, a window, pulleys, a pull rope, a worm wheel, a worm, support plates, a bimetallic strip and a protection device, wherein the worm is rotatably connected between the two support plates, the two supporting plates are fixedly arranged on the active layer of the bimetallic strip, the bimetallic strip is fixedly arranged on the window frame, the protection device comprises a shell, a connecting plate, a first transverse plate, a connecting rod, a second transverse plate, a spiral spring and a mandril, one end of the two connecting plates is fixedly connected with the two ends of the bimetallic strip respectively, the other end of the two connecting plates is fixedly connected with the two ends of the first transverse plate respectively, one end of the connecting rod is fixedly connected with the middle part of the first transverse plate, the other end of the connecting rod is positioned in, the second transverse plate is fixedly connected with the other end of the connecting rod, the spiral spring is sleeved on the connecting rod, one end of the ejector rod is fixedly connected with the second transverse plate, the other end of the ejector rod is fixedly connected with the bottom surface of the inner cavity of the shell, and the ejector rod is made of fusible alloy. The invention can automatically close the fire window when a fire disaster happens, and the whole structure is simple.

Description

Fire-proof window

Technical Field

The invention relates to the technical field of doors and windows, in particular to a fireproof window.

Background

A fire refers to a disaster caused by combustion that is out of control in time or space. Among the various disasters, fire is one of the main disasters that threaten public safety and social development most often and most generally. Three conditions are required for the formation of a fire: combustible materials, air and fire sources, and fire extinguishing is usually carried out by methods of suffocation, cooling, fire species removal and the like after a fire occurs. When a fire occurs, the indoor temperature reaches 400 ℃ and gradually rises, and it is necessary to take fire prevention measures to control the spread or spread of the fire. Most of the existing fire windows adopt an automatic detection and control system to close the window when a fire disaster happens, and the existing fire windows are complex in structure and high in cost.

Disclosure of Invention

In order to overcome the problems that the conventional fire window is mostly closed by adopting an automatic detection and control system when a fire disaster happens, and the fire window is complex in structure and high in cost, the invention provides a fire window, and the specific technical scheme is as follows:

the utility model provides a fire window, includes window frame, window, pulley and stay cord, the one end of window is passed through the hinge and is articulated in the upper portion of window frame, the pulley sets firmly the top in the window frame, the stay cord around establishing on the recess of pulley just the one end of stay cord sets firmly in the other end of window, fire window still includes worm wheel, worm, two backup pads that are parallel to each other, bimetallic strip and protection device, the worm wheel rotationally connects on the window frame through the pivot, the other end of stay cord sets firmly on the pivot, the worm passes two backup pads and rotationally connects in two backup pads and with the worm wheel meshing, two the backup pad sets firmly on the initiative layer of bimetallic strip, the initiative layer of bimetallic strip is located the top of the passive layer of bimetallic strip, protection device includes shell, connecting plate, first diaphragm, a, The connecting rod, the second transverse plate, the spiral spring and the ejector rod are arranged on the window frame, the shell is arranged on the window frame and located below the bimetallic strip, the connecting plates are two and two, one end of each connecting plate is fixedly connected with two ends of the bimetallic strip respectively, the other end of each connecting plate is fixedly connected with two ends of the first transverse plate respectively, one end of each connecting rod is fixedly connected with the middle of the first transverse plate, the other end of each connecting rod penetrates through the inner cavity of the shell and then is located in the inner cavity of the shell, the middle of the second transverse plate is fixedly connected with the other end of each connecting rod, the spiral spring is sleeved on the connecting rods and located between the top surface of the inner cavity of the shell and the second transverse plate, one end of the ejector rod is fixedly connected with the second transverse plate, the other end of the ejector rod is.

Optionally, the window frame is made of an aluminum alloy material.

Optionally, the housing is in a hollow square tube shape and made of an aluminum alloy material.

Optionally, the first transverse plate and the second transverse plate are parallel to each other.

Optionally, the helix angle of the worm is less than the friction angle of the worm gear contact.

The beneficial effects obtained by the invention comprise: through setting up worm, worm wheel, bimetallic strip and protection device, not only can make the worm wheel and worm mesh better together in order to adjust the window aperture, can also make fire window self-closing when the conflagration takes place, avoid the intensity of a fire to stretch, its overall structure is simple, and the cost is lower, is fit for promoting.

Drawings

The present invention will be further understood from the following description taken in conjunction with the accompanying drawings, the emphasis instead being placed upon illustrating the principles of the embodiments.

FIG. 1 is a schematic view of an overall structure of a fire window according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Description of reference numerals:

1. a window frame; 2. a window; 3. a pulley; 4. a worm gear; 5. a worm; 6. a bimetal; 7. a support plate; 8. pulling a rope; 60. an active layer; 61. a passive layer; 9. a housing; 10. a connecting plate; 11. a first transverse plate; 12. a connecting rod; 13. a second transverse plate; 14. a top rod; 15. a coil spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof.

The invention relates to a fire window, which explains the following embodiments according to the attached drawings:

referring to fig. 1 and 2, the fire window includes a window frame 1, a window 2, a pulley 3, and a pull rope 8, wherein one end of the window 2 is hinged to the upper portion of the window frame 1 through a hinge, a central shaft of the pulley 3 is fixedly disposed at the top end of the window frame 1, a groove is disposed on the circumferential surface of the pulley 3, one end of the pull rope 8 is fixedly disposed at the other end of the window 2, specifically, one end of the pull rope 8 is disposed at the middle portion of a side frame of the window 2, which is far away from the window frame 1, and the other end of the pull rope 8 crosses the groove of the pulley 3 through the outer side of the window 2 and is. The fire window still includes worm wheel 4, worm 5, two backup pads 7, bimetallic strip 6 and protection device that are parallel to each other, worm wheel 4 rotationally connects on window frame 1 through the pivot, the other end of stay cord 8 sets firmly on the pivot, worm 5 passes two backup pad 7 rotationally connects in two above backup pad 7 and with worm wheel 4 meshes, two backup pad 7 sets firmly on bimetallic strip 6's initiative layer 60, bimetallic strip 6 sets firmly on window frame 1 and bimetallic strip 6's initiative layer 60 is located the top of bimetallic strip 6's passive layer 61.

As shown in fig. 2, the protection device comprises a shell 9, a connecting plate 10, a first transverse plate 11, a connecting rod 12, a second transverse plate 13, a limit stop 14, a coil spring 15 and a push rod 14, wherein the shell 9 is made of aluminum alloy material with good thermal conductivity, is in a hollow square tube shape, is installed on the window frame 1 and is positioned below the bimetallic strip 6; the connecting plates 10 are provided with two connecting plates 10, one ends of the two connecting plates 10 are fixedly connected with two ends of the bimetallic strip 6 respectively, and a gap is reserved between the bimetallic strip 6 and the surface of the window frame 1 so that the bimetallic strip 6 can be bent and deformed normally at high temperature. The other ends of the two connecting plates 10 are respectively fixedly connected with two ends of the first transverse plate 11, one end of the connecting rod 12 is fixedly connected with the middle of the first transverse plate 11, the other end of the connecting rod 12 penetrates through the shell 9 and then is located in the inner cavity of the shell 9, the middle of the second transverse plate 13 is fixedly connected with the other end of the connecting rod 12, and the first transverse plate 11 is parallel to the second transverse plate 13. The spiral spring 15 is sleeved on the connecting rod 12 and is positioned between the top surface of the inner cavity of the shell 9 and the second transverse plate 13, one end of the ejector rod 14 is fixedly connected with the second transverse plate 13, and the other end of the ejector rod 14 is fixedly connected with the bottom surface of the inner cavity of the shell 9. The plunger 14 is made of a fusible alloy, and its melting point may be 93 to 141 degrees. Specifically, one end of the coil spring is fixedly connected with the top surface of the inner cavity of the housing 9, and the other end of the coil spring 15 is fixedly connected with the bottom surface of the inner cavity of the housing 9. In the absence of fire, the helical spring 15 is in a compressed state, which stores a certain spring force, and the worm 5 engages with the worm wheel 4.

When fire breaks out, the bimetallic strip 6 is not deformed and the ejector 14 is not fused, and the worm 5 is meshed with the worm wheel 4. The worm 5 is rotated to rotate the worm wheel 4, and the pull cord 8 is wound around the rotation shaft of the worm wheel 4 to be retracted or released, and the pull cord 8 slides on the pulley 3 to pull the window 2 to be opened or closed. When a fire disaster occurs, the indoor temperature rises, and high-temperature gas diffuses to the outdoor through the window 2, so that after the bimetallic strip 6 is gradually heated to the deformation temperature, the bimetallic strip 6 deforms, the whole bimetallic strip is bent from the driving layer 60 to one side of the driven layer 61, the worm 5 is driven to move to one side of the driven layer 61, and then the worm 5 is separated from the worm wheel 4. Under window 2's self action of gravity, the winding is at 4 epaxial stay cords 8 of epaxial releases of worm wheel and is loosened, and window 2 will fall automatically and close, blocks indoor outer circulation of air, so not only can prevent indoor high temperature gas diffusion, prevent that the intensity of a fire from stretching, also can avoid outdoor air to get into indoorly, make indoor flame extinguish by oneself because of oxygen exhausts. If the bimetallic strip 6 fails to deform and bend when a fire breaks out, when the temperature of the ejector rod 14 rises to the action temperature (namely, the melting point), the ejector rod 14 is melted, the second transverse plate 13, the connecting rod 12, the first transverse plate 11, the worm 5, the supporting plate 7 and the bimetallic strip 6 move downwards under the action of the elastic force of the spiral spring 15, so that the worm 5 is separated from the worm wheel, the pull rope 8 wound on the rotating shaft of the worm wheel 4 is released and loosened under the action of the self gravity of the window 2, and the window 2 automatically falls down and is closed to block the indoor and outdoor air circulation.

Compared with the fire window which is closed by adopting an automatic detection and control system in the prior art, the fire window can effectively automatically close the window when a fire disaster occurs through common cheap components such as the bimetal, the worm wheel, the protection device and the like, so that the fire spread is avoided, and the fire window has a simple integral structure and lower cost. In addition, through setting up bimetallic strip and protection device simultaneously, can ensure when the indoor conflagration that takes place, worm and worm wheel can break away from smoothly, make door and window close, its reliability is high.

The width of the two supporting plates 7 is smaller than that of the bimetallic strip 6, and the two supporting plates 7 are arranged at the position, close to the middle part, of the bimetallic strip 6. When the bimetallic strip 6 is bent into an arc shape at a certain radius due to high temperature, the downward displacement of the support plate 7 should be greater than the tooth height of the worm 5, so that the worm 5 is completely separated from the worm wheel 4, and the worm wheel 4 can freely rotate under the action of the self gravity of the window 2 and the pull rope 8 until the window 2 falls down and is closed. The specific dimensions of the bimetal 6 and the support plate 7 can be set by those skilled in the art according to actual conditions, and are not described in detail herein.

Example two:

The bimetallic strip 6 is a snap-action bimetallic disc, the operating temperature is above 85 ℃, and the reset temperature is below 60 ℃. The bimetallic strip 6 is set as a snap-action bimetallic disk, so that the opening and closing stability of the fire window can be improved, and the automatic closing action of the fire window is prevented from being mistaken.

The worm wheel 4, the worm 5, the window frame 1, the support plate 7, and the housing 9 are made of a metal material having good thermal conductivity, and the metal material is preferably an aluminum alloy having good thermal conductivity. So, the fire prevention window can be better the sensing indoor temperature, in time makes bimetallic strip 6 take place deformation and make ejector pin 14 melt when the conflagration takes place, and then worm 5 worm wheel 4 breaks away from, closes window 2 in order to avoid the intensity of a fire to spread.

Example three:

The weight of the window 2 differs due to the different profiles. In order that the bimetallic strip 6 is not deformed and bent under the gravity action of the worm 5 and the supporting plate 7, the bimetallic strip 6 can be two-layer, three-layer, four-layer or multi-layer thermal bimetallic strip 6 according to actual conditions, and the description of the embodiment is omitted.

Example four:

The unfolding spiral angle of the worm 5 is smaller than the friction angle of the contact of the worm gear 5. In this way, a self-locking of the worm 5 and the worm wheel 4 can be achieved, so that only the worm 5 can drive the worm wheel 4. When a fire disaster does not happen, the window 2 can be conveniently opened to a certain angle by rotating the worm 5, the worm wheel 4 cannot rotate under the self gravity of the window 2, and then the worm 5 is driven to rotate, so that the window 2 is automatically closed under the self gravity.

In summary, the fire window disclosed in the present invention has the following beneficial effects: through setting up worm, worm wheel, bimetallic strip and protection device, not only can make the worm wheel and worm mesh better together in order to adjust the window aperture, can also make fire window self-closing when the conflagration takes place, avoid the intensity of a fire to stretch, its overall structure is simple, and the cost is lower, is fit for promoting.

Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.

Claims

1. The utility model provides a fire window, includes window frame, window, pulley and stay cord, the one end of window is passed through the hinge and is articulated in the upper portion of window frame, the pulley sets firmly in the top of window frame, the stay cord around establishing on the recess of pulley just the one end of stay cord sets firmly in the other end of window, a serial communication port, fire window still includes worm wheel, worm, two backup pads that are parallel to each other, bimetallic strip and protection device, the worm wheel rotationally connects on the window frame through the pivot, the other end of stay cord sets firmly on the pivot, the worm passes two backup pads and rotationally connects in two among the backup pad and with the worm wheel meshing, two the backup pad sets firmly on the initiative layer of bimetallic strip, the initiative level of bimetallic strip is in the top of the passive layer of bimetallic strip, protection device includes shell, the one-tenth lower limb, the, The connecting plate, the first transverse plate, the connecting rod, the second transverse plate, the spiral spring and the ejector rod are arranged on the window frame, the shell is arranged on the window frame and located below the bimetallic strip, the connecting plate is provided with two connecting plates, one end of each connecting plate is fixedly connected with two ends of the bimetallic strip respectively, the other ends of the two connecting plates are fixedly connected with two ends of the first transverse plate respectively, one end of each connecting rod is fixedly connected with the middle of the first transverse plate, the other end of each connecting rod penetrates through the shell and is located in the inner cavity of the shell, the middle of the second transverse plate is fixedly connected with the other end of the connecting rod, the spiral spring is sleeved on the connecting rod and is located between the top surface of the inner cavity of the shell and the second transverse plate, one end of the ejector rod is fixedly connected with the second transverse plate, the other end of the ejector.

2. A fire protection window according to claim 1, wherein the window frame is made of an aluminium alloy material.

3. A fire protection window according to any of the preceding claims, wherein the housing is hollow square tube shaped and made of an aluminium alloy material.

4. A fire protection window according to any preceding claim, wherein the first and second cross panels are parallel to one another.

5. A fire protection window according to any of the preceding claims, wherein the helix angle of the worm is less than the angle of friction of the worm gear contact.