A fireproof automatic closing window closing component

Abstract

The present invention discloses a fire-proof automatic closing window closing component, comprising a first component and a guide rail fixedly connected to the window sash, a second component slidably connected to the guide rail, and a traction mechanism for pulling the second component to slide along the guide rail; the first component comprises a cylindrical shell, a piston slidably matched with the cylindrical shell, a pull rod connected between the piston and the second component, and a reset elastic member for driving the piston to reset; the second component comprises a base, a first positioning block, a second positioning block, a third positioning block and a thermal-sensitive unit, the first positioning block and the third positioning block cooperate to press the second positioning block, the second positioning block is pressed and contacted with the bottom surface of the guide rail, the base forms a limiting structure, and the two ends of the thermal-sensitive unit are respectively pressed against the limiting structure and the third positioning block.

Description

Technical Field

[0001] The invention relates to the technical field of fireproof doors and windows, and in particular to a fireproof automatically closing window closing component. Background Art

[0002] For building doors and windows, fireproof windows play an important role in preventing major losses when a fire occurs, slowing the spread of fire, including open flames, high temperatures, and thick smoke, and buying time for fire rescue. Since most buildings now install invisible hinges on their windows to replace traditional hinges, there are no stable fireproof window hardware accessories on the market for fireproof windows with invisible hinges. Most closing device structures contain torsion springs, tension springs, or spring torsion springs. After long-term use, torsion springs, tension springs, or spring torsion springs are prone to fatigue and breakage at the breaking point, causing the closing device to fail and the fireproof windows to be unable to perform their fireproofing function. In order to solve the problem of fireproof windows with invisible hinges, not only the automatic window closing function should be realized, but also the service life should be long. Therefore, a set of fireproof automatic closing window closing components is designed. The internal structure uses a compression spring. At the same time, the window sash can automatically close the window in the event of a fire, and the problem of spring breakage is also well solved. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a fireproof automatic closing window closing component which has a novel and simple structure and can realize a fireproof self-closing function.

[0004] In order to achieve the above objectives, the technical solution adopted by the present invention is: a fire-proof automatic closing window closing component, including a first component and a guide rail fixedly connected to the window sash, a second component slidably connected to the guide rail, and a traction mechanism for pulling the second component to slide along the guide rail; the first component includes a cylinder shell, a piston slidingly matched with the cylinder shell, a pull rod connected between the piston and the second component, and a reset elastic member for driving the piston to reset; the second component includes a base, a first positioning block, a second positioning block, a third positioning block and a thermal sensitive unit, the first positioning block and the third positioning block cooperate to press the second positioning block, the second positioning block is pressed and contacted with the bottom surface of the guide rail, the base forms a limiting structure, and the two ends of the thermal sensitive unit are respectively pressed against the limiting structure and the third positioning block.

[0005] The beneficial effects of the present invention are as follows: the fireproof automatic closing window closing component of the present invention utilizes the friction force generated by the pressing contact between its second positioning block and the guide rail to prevent it from resetting and closing under the drive of the reset elastic member, thus providing the fireproof window with a stepless positioning effect and making it more convenient to use. When encountering extreme high temperature conditions such as fire, its thermal sensitive unit ruptures under the high temperature, at which time the thermal sensitive unit's pressing effect on the third positioning block disappears, thereby making it unable to form a pressing effect on the second positioning block. The pressing effect of the second positioning block on the guide rail disappears, and the second component can freely reset and translate under the drive of the reset elastic member, and during its reset process, it drives the fireproof window to close.

[0006] Preferably, a first adjusting screw is threadedly connected to the end of the cylindrical shell on the same side as the piston retraction direction. By turning the first adjusting screw, the insertion depth of the first screw into the cylindrical shell can be adjusted, thereby adjusting the maximum retracted length of the pull rod within the cylindrical shell, and thus adjusting the sliding stroke of the second component to adapt to the closing and opening range of the window sash.

[0007] Preferably, the first, second, and third positioning blocks are each formed with mutually cooperating guide bevels, and the base is threadedly connected to a second adjustment screw that presses against the first positioning block. Because the first, second, and third positioning blocks have guide bevels, the extrusion force exerted by the first and third positioning blocks on the second positioning block can be converted into a pressing force exerted by the second positioning block on the guide rail, ultimately adjusting the friction between the second positioning block and the guide rail. Turning the second adjustment screw causes it to press against the first positioning block, thereby adjusting the pressing force exerted by the first positioning block on the second positioning block, ultimately achieving the effect of adjusting the friction of the second positioning block.

[0008] Preferably, the third positioning block and the limiting structure are both formed with positioning grooves that match the thermal sensitive unit. The positioning grooves can be used to fix the thermal sensitive unit to prevent the thermal sensitive unit from shifting or misaligning between the third positioning block and the limiting structure.

[0009] Preferably, the pull rod is threadedly connected to the base.

[0010] Preferably, the traction mechanism includes a hinge and a connecting rod hingedly connected between the hinge and the second component. When the window sash is opened or closed, the hinge can drive the second component to translate along the guide rail via the connecting rod. In particular, when the window sash is opened, the second component translates in a direction away from the first component, during which the resetting elastic member is compressed and stores elastic potential energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A bottom view of the present invention (hinges not shown).

[0012] Figure 2 A perspective view of the present invention (without showing the hinge).

[0013] Figure 3 This is an exploded view of the present invention (hinges not shown).

[0014] Figure 4 It is a side sectional view of the present invention in a closed state.

[0015] Figure 5 It is a side sectional view of the present invention in the open state.

[0016] Figure 6 It is a side sectional view of the present invention in the self-closing state.

[0017] Among them, 1-first component, 11-cylinder shell, 12-piston, 13-pull rod, 14-reset elastic member, 15-first adjusting screw, 2-second component, 21-base, 22-first positioning block, 23-second positioning block, 24-third positioning block, 25-thermal sensitive unit, 26-limiting structure, 27-second adjusting screw, 28-positioning slot, 3-guide rail, 4-traction mechanism, 41-hinge, 42-connecting rod. DETAILED DESCRIPTION

[0018] The technical solution claimed by the present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] See also Figures 1 to 6 As shown, a fire-proof automatic closing window closing component in this embodiment includes a first component 1 and a guide rail 3 fixedly connected to the window sash, a second component 2 slidably connected to the guide rail 3, and a traction mechanism 4 for pulling the second component 2 to slide along the guide rail 3.

[0020] The first assembly 1 comprises a cylindrical housing 11, a piston 12 that slidably engages with the cylindrical housing 11, a pull rod 13 connected between the piston 12 and the second assembly 2, and a resilient return member 14 that resets the piston 12. In this embodiment, a first adjustment screw 15 is threadedly connected to the end of the cylindrical housing 11 on the same side as the piston 12's retraction direction. By turning the first adjustment screw 15, the insertion depth of the first screw within the cylindrical housing 11 can be adjusted, thereby adjusting the maximum retracted length of the pull rod 13 within the cylindrical housing 11 and, in turn, adjusting the sliding stroke of the second assembly 2 to suit the window sash's closing and opening range.

[0021] The second component 2 includes a base 21, a first positioning block 22, a second positioning block 23, a third positioning block 24 and a thermal unit 25. The third positioning block 24 and the limiting structure 26 are both formed with a positioning groove 28 that matches the thermal unit 25. The pull rod 13 is threadedly connected to the base 21. The first positioning block 22 and the third positioning block 24 cooperate to press the second positioning block 23, and the second positioning block 23 is in contact with the bottom surface of the guide rail 3. The base 21 is formed with a limiting structure 26, and the two ends of the thermal unit 25 are respectively pressed against the limiting structure 26 and the third positioning block 24. The first positioning block 22, the second positioning block 23 and the third positioning block 24 are both formed with mutually matching guide slopes, and the base 21 is threadedly connected with a second adjusting screw 27 that presses against the first positioning block 22. The squeezing force of the first positioning block 22 and the third positioning block 24 on the second positioning block 23 can be converted into the pressing force of the second positioning block 23 on the guide rail 3, and finally the friction between the second positioning block 23 and the guide rail 3 is adjusted. By turning the second adjusting screw 27, the first positioning block 22 can be pressed to adjust the pressing force of the first positioning block 22 on the second positioning block 23, and finally the friction of the second positioning block 23 is adjusted.

[0022] In this embodiment, the traction mechanism 4 includes a hinge 41 and a connecting rod 42 hingedly connected between the hinge 41 and the second component 2. When the window sash is opened or closed, the hinge 41 can drive the second component 2 to translate along the guide rail 3 via the connecting rod 42. In particular, when the window sash is opened, the second component 2 translates in a direction away from the first component 1. During this process, the reset elastic member 14 is compressed and stores elastic potential energy.

[0023] The fireproof automatic closing window closure assembly of this embodiment operates as follows: When the window sash opens, the hinge 41, via the connecting rod 42, drives the second assembly 2 to translate in a direction away from the first assembly 1. During this process, the resilient return element 14 is compressed and stores elastic potential energy. When the window sash stops opening, the friction generated by the contact between the second positioning block 23 and the guide rail 3 prevents the window sash from returning to its original position under the influence of the resilient return element 14, thus achieving a stepless positioning effect for the fireproof window.

[0024] When the window sash is actively closed, the hinge 41 drives the second assembly 2 to translate in the opposite direction along the guide rail 3 via the connecting rod 42. During this process, the return spring 14 gradually returns to its original state, releasing its elastic potential energy. When the window sash stops closing, the friction generated by the contact between the second positioning block 23 and the guide rail 3 prevents the window sash from returning to its original position under the influence of the return spring 14, thus achieving a stepless positioning effect.

[0025] When encountering extreme high temperature conditions such as fire, its thermal unit 25 breaks under high temperature. At this time, the pressing effect of the thermal unit 25 on the third positioning block 24 disappears, and the third positioning block 24 cannot form a pressing effect on the second positioning block 23. The pressing effect of the second positioning block 23 on the guide rail 3 disappears, and the second component 2 can freely reset and translate under the drive of the reset elastic member 14, and drive the fire window to close during its reset process.

[0026] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any person skilled in the art can, without departing from the scope of the present invention, utilize the technical content disclosed above to make further possible variations and modifications to the present invention, or modify the present invention into equivalent embodiments with equivalent variations. Therefore, any equivalent variations made in accordance with the principles of the present invention without departing from the content of the present invention's technical solution should be included within the scope of protection of the present invention.

Claims

1. A fireproof automatic closing window closing component, characterized by: The invention comprises a first component (1) fixedly connected to the window sash and a guide rail (3), a second component (2) slidably connected to the guide rail (3), and a traction mechanism (4) for pulling the second component (2) to slide along the guide rail (3); the first component (1) comprises a cylinder shell (11), a piston (12) slidably matched with the cylinder shell (11), a pull rod (13) connected between the piston (12) and the second component (2), and a reset elastic member (14) for driving the piston (12) to reset; the second component (2) comprises a base (21), a first positioning block (22), a second positioning block (23), The third positioning block (24) and the heat-sensitive unit (25) are provided. The first positioning block (22) and the third positioning block (24) cooperate to press the second positioning block (23). The second positioning block (23) is in contact with the bottom surface of the guide rail (3). The base (21) forms a limiting structure (26). The two ends of the heat-sensitive unit (25) are respectively pressed against the limiting structure (26) and the third positioning block (24). The friction force generated by the pressing contact between the second positioning block (23) and the guide rail (3) is used for positioning to prevent the window sash from resetting and closing under the drive of the resetting elastic member (14), thereby realizing stepless positioning of the window sash.

2. The fireproof automatic closing window closing component according to claim 1, characterized in that: The end of the cylinder shell (11) on the same side as the contraction direction of the piston (12) is threadedly connected to a first adjusting screw (15).

3. The fireproof automatic closing window closing component according to claim 1, characterized in that: The first positioning block (22), the second positioning block (23) and the third positioning block (24) are all formed with mutually matching guiding inclined surfaces, and the base (21) is threadedly connected with a second adjusting screw (27) that presses against the first positioning block (22).

4. The fireproof automatic closing window closing component according to claim 1, characterized in that: The third positioning block (24) and the limiting structure (26) are both formed with a positioning groove (28) that matches the thermal unit (25).

5. The fireproof automatic closing window closing component according to claim 1, characterized in that: The pull rod (13) is threadedly connected to the base (21).

6. The fireproof automatic closing window closing component according to claim 1, characterized in that: The traction mechanism (4) comprises a hinge (41) and a connecting rod (42) hinged between the hinge (41) and the second component (2).

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