Dual mode roll-up fire screen

Abstract

The application discloses a double-mode roll type fireproof window curtain, which comprises a cover shell, a rotating shaft mechanism, fireproof curtain cloth, a gravity support rod, a rotation limiting mechanism, a manual mechanism, a smoke sensing element and a control board assembly. The rotating shaft mechanism is arranged in the cover shell in a shaft center transverse mode. One end of the fireproof curtain cloth is connected with the gravity support rod and is arranged on the rotating shaft mechanism in a winding mode. The rotation limiting mechanism is arranged in the cover shell and is connected with the rotating shaft mechanism. The manual mechanism is connected with the rotating shaft mechanism. The smoke sensing element is arranged on the cover shell. The control board assembly is electrically connected with the smoke sensing element and the rotation limiting mechanism. The gravity support rod is arranged to cooperate with the rotating shaft mechanism to make the fireproof curtain cloth have an automatic release function of physical structure. Meanwhile, the rotation limiting mechanism is automatically triggered by the smoke sensing element to timely release the rotation limitation of the rotating shaft mechanism in a fire danger situation, so that the fireproof curtain cloth can be quickly released to shield a window, the fire blocking effect is realized, and the manual mechanism can be used to replace a conventional window curtain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire-fighting equipment, in particular to a dual-mode roll type fireproof window curtain. BACKGROUND

[0002] The fireproof window curtain is a fire-fighting equipment applied to the window of a house or office, which can effectively block the fire when a fire hazard occurs, so as to reduce or even avoid the spread of the fire, thereby protecting the life and property as much as possible in the fire. Due to the emergency of the fire hazard, the conventional fireproof window curtain does not set a manual operation mode, so as to avoid the situation that the fire blocking effect is delayed due to the failure to operate to lower the window curtain. The structure of the traditional automatic fireproof curtain is complex, usually multiple tracks are configured and a motor is used to drive the window curtain to be lowered, which has a high cost. In addition, the fireproof window curtain is mainly used when a fire hazard occurs, so in actual application, it will occupy more installation space of the window position, which will affect the basic functions of the window such as light transmission and ventilation. Moreover, the power will be cut off when the fire hazard occurs, which will also affect the normal operation of the driving motor, resulting in the problem that the window curtain cannot be lowered in time to block the fire. In view of this, the present application provides a fireproof window curtain design scheme which has a simple structure, is easy to use, occupies less space and has a fast fire-fighting response. SUMMARY

[0003] In view of the problems existing in the prior art, the present application provides a dual-mode roll type fireproof window curtain, which can automatically release to block the fire when a fire hazard occurs, and can also be manually lowered in normal times, thereby replacing the conventional window curtain to a certain extent.

[0004] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0005] The application discloses a dual-mode roll type fireproof window curtain, which comprises a cover, a rotating shaft mechanism, fireproof curtain cloth, a gravity supporting rod, a rotation limiting mechanism, a manual mechanism, a smoke sensing element and a control board assembly, the cover is arranged on the upper side of a window to play a whole supporting and shielding role, the rotating shaft mechanism is arranged in the cover in a shaft center transverse mode, the fireproof curtain cloth is matched with the size of the window, one end of the fireproof curtain cloth is connected with the rotating shaft mechanism, the other end is connected with the gravity supporting rod, and the fireproof curtain cloth is arranged on the rotating shaft mechanism in a winding mode, the gravity supporting rod keeps the fireproof curtain cloth in an extended state in the shaft center direction and pulls down the fireproof curtain cloth from the rotating shaft mechanism to shield the window by using the gravity of the fireproof curtain cloth when a fire hazard occurs, the rotation limiting mechanism is arranged in the cover and connected with the rotating shaft mechanism, and is used for limiting the rotation of the rotating shaft mechanism when the rotating shaft mechanism is at rest, the manual mechanism is connected with the rotating shaft mechanism and is used for manually operating the fireproof curtain cloth to overcome the limitation of the rotation limiting mechanism on the rotating shaft mechanism, the smoke sensing element is arranged on the cover and is used for detecting whether a fire hazard occurs in the surrounding environment, and the control board assembly is electrically connected with the smoke sensing element and the rotation limiting mechanism, and the rotation limiting mechanism is released from the limitation on the rotating shaft mechanism according to a fire hazard signal sent by the smoke sensing element.

[0006] Specifically, the rotating shaft mechanism comprises a curtain rod with a shaft center transverse mode, a left end plug and a right end plug arranged at two ends of the curtain rod respectively, a left rotating shaft arranged on the left end plug and coaxial with the curtain rod, and a right rotating shaft arranged on the right end plug and coaxial with the curtain rod, the left rotating shaft and the right rotating shaft are connected with corresponding end portions in the cover through bearings and bearing seats, and the curtain rod is connected with one end of the fireproof curtain cloth through a clamping groove arranged on the curtain rod.

[0007] The installation space is arranged in the cover where the right end plug and the right rotating shaft are located, and is used for arranging the rotation limiting mechanism, the manual mechanism, the smoke sensing element and the control board assembly.

[0008] Specifically, the rotation limiting mechanism comprises a limiting disc fixedly connected with the right end plug, a plurality of limiting grooves regularly arranged on the limiting disc, a limiting electromagnet fixedly arranged in the cover, and an elastic limiting rod arranged on a movable end of the limiting electromagnet and in a state of being correspondingly clamped at an end portion of the limiting grooves, and the limiting electromagnet is electrically connected with the control board assembly.

[0009] Further, the elastic limiting rod comprises a limiting rod body fixedly connected with the movable end of the limiting electromagnet, a limiting block arranged on the limiting rod body, and a thrust spring sleeved on the limiting rod body and located between the limiting block and a shell of the movable end of the limiting electromagnet, the thrust spring provides a thrust force for the limiting rod body to keep the end portion of the limiting rod body in a clamped state of the limiting grooves, so that the rotation of the rotating shaft mechanism is limited by the limiting disc, and when the limiting electromagnet is electrified, the movable end is magnetically attracted to pull the limiting rod body to overcome the elastic force of the thrust spring, so that the limiting rod body is released from the clamped state of the limiting grooves.

[0010] Further, the limiting groove is in the shape of a circular arc groove, and is arranged on the side of the limiting disc facing the limiting electromagnet in a circumferential distribution around the shaft center; and the end of the elastic limiting rod is configured as a circular head matching the limiting groove.

[0011] Specifically, the manual mechanism comprises a handle disc arranged on the right rotating shaft or the right end plug, a guide slot and a clamping hole arranged on the handle disc, and a pull bead arranged in the guide slot and clamped with the clamping hole, and the lower end of the pull bead is lowered to an operable height on the side of the window.

[0012] Specifically, the control board assembly comprises a PCB board fixedly arranged in the shell, and a microprocessor, a power supply circuit, a rechargeable battery and a voltage boosting circuit arranged on the PCB board, the power supply circuit is externally connected to supply power to provide power for the microprocessor and supplement power for the rechargeable battery through a power supply interface, when there is no external power supply, the rechargeable battery provides power for the microprocessor, when a fire hazard occurs, the smoke sensing element sends a detection signal to the microprocessor, the microprocessor turns on the voltage boosting circuit to make the rechargeable battery output boosted power to drive the limiting electromagnet to close, and the elastic limiting rod is retracted to release the limitation on the limiting disc.

[0013] Further, the voltage boosting circuit comprises a coil L1 and a coil L2 connected with one output end of the rechargeable battery, a resistor R1 connected with the coil L1, a triode Q1 with the base connected with the resistor R1 and the collector connected with the coil L2, a switch S connected between the other output end of the rechargeable battery and the emitter of the triode Q1 and controlled by the microprocessor, a diode D1 with the anode connected with the collector of the triode Q1, and a capacitor C1 and a diode D2 connected in parallel with the negative electrode of the diode D1 connected with one end and the emitter of the triode Q1 connected with the other end, wherein the negative electrode of the diode D1 and the emitter of the triode Q1 are connected with the limiting electromagnet as two output ends.

[0014] Specifically, the smoke sensing element is configured as a smoke sensor, or is configured as a smoke sensor and a temperature sensor to improve the detection accuracy of the fire hazard.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] (1) The present application has the automatic release function of the physical structure of the fireproof curtain cloth through the setting of the gravity support rod cooperating with the rotating shaft mechanism, avoids using motor and other components, realizes the effect of structure simplification and cost saving, and ingeniously designs the rotation limiting mechanism automatically triggered by the smoke sensing element. In normal times, the rotation limiting mechanism is used to keep the winding state of the fireproof curtain cloth, and in the event of fire danger, the rotation limitation of the rotating shaft mechanism is released in time to quickly release the fireproof curtain cloth to block the window, realize the fire blocking effect, avoid the spread of fire, and also configure a manual mechanism to wind and unwind the fireproof curtain cloth through manual operation in normal times, which can replace the conventional curtain. The present application is simple and ingenious in design, easy to use, and suitable for application in fireproof curtains.

[0017] (2) The rotating shaft mechanism of the present application uses a special curtain rod to install the fireproof curtain cloth, and is provided with special left and right rotating shafts rotating through bearings, which avoids the jamming of the curtain rod in the conventional curtain due to structural problems, ensures the smoothness of the winding and unwinding process of the fireproof curtain cloth, and improves the application performance of the fireproof curtain.

[0018] (3) The rotation limiting mechanism of the present application uses an elastic limiting rod to clamp and position the limiting disc on the end plug, thereby realizing the rotation limitation of the rotating shaft mechanism, effectively avoiding the release of the fireproof curtain cloth in the conventional state, and using a limiting electromagnet to contract the elastic limiting rod in the event of fire danger to realize the release of the rotation limitation of the rotating shaft mechanism, thereby quickly releasing the fireproof curtain cloth for fire blocking by the action of the gravity support rod.

[0019] (4) The rotation limiting mechanism of the present application also uses a circular arc groove shaped limiting groove and a circular head limiting rod body to realize the limiting effect, and the rotation of the rotating shaft mechanism by the manual mechanism can realize smooth manual operation in the normal state, improving the convenience of manual control of the winding and unwinding of the fireproof curtain cloth.

[0020] (5) The control board assembly of the present application uses a rechargeable battery to power the limiting electromagnet, avoiding the problem of power interruption affecting the release of the fireproof curtain cloth in the event of fire danger, and configuring a voltage boosting circuit to ensure that the limiting electromagnet has enough driving force to contract the elastic limiting rod, improving the performance of the fireproof curtain. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0022] Figure 2 It is a schematic diagram of the structure of the left end part of the rotating shaft mechanism in the embodiment of the present application.

[0023] Figure 3 It is a schematic diagram of the structure of the right end part of the rotating shaft mechanism in the embodiment of the present application.

[0024] Figure 4This is a schematic diagram of the rotation limiting mechanism in an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the elastic limiting rod portion in an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the manual mechanism in an embodiment of the present invention.

[0027] Figure 7 This is a circuit structure block diagram of the control board assembly in an embodiment of the present invention.

[0028] Figure 8 This is a circuit diagram of the boost circuit in an embodiment of the present invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0030] Example

[0031] like Figures 1 to 8 As shown, this dual-mode roll-up fireproof curtain includes a housing 1, a pivot mechanism 10, a fireproof curtain fabric 2, a gravity support rod 3, a rotation limiting mechanism 20, a manual mechanism 30, a smoke detector element 4, and a control panel assembly. The housing is placed on the upper side of the window to provide overall support, fixation, and shielding. The pivot mechanism is horizontally positioned within the housing. The fireproof curtain fabric matches the size of the window, with one end connected to the pivot mechanism and the other end connected to the gravity support rod. It is wound around the pivot mechanism in a rolling manner. The gravity support rod keeps the fireproof curtain fabric extended in the axial direction and provides protection in case of fire. The fireproof curtain is pulled down from the rotating shaft mechanism using its own weight to cover the window. The rotation-limiting mechanism, housed within the housing and connected to the rotating shaft mechanism, restricts its rotation when stationary. A manual mechanism, connected to the rotating shaft mechanism, allows the user to manually operate the curtain to overcome the restriction imposed by the rotation-limiting mechanism. A smoke detector, mounted on the housing, detects potential fire hazards in the surrounding environment. The control board assembly is electrically connected to both the smoke detector and the rotation-limiting mechanism, releasing the rotation restriction on the rotating shaft mechanism based on a fire hazard signal emitted by the smoke detector. Specifically, the smoke detector is configured as a smoke sensor, or a combination of a smoke sensor and a temperature sensor, to improve the accuracy of fire hazard detection.

[0032] Specifically, the rotating shaft mechanism 10 comprises a shaft-crossed curtain rod 11, a left end plug 12 and a right end plug 14 respectively arranged at both ends of the curtain rod, a left rotating shaft 13 arranged on the left end plug coaxial with the curtain rod, and a right rotating shaft 15 arranged on the right end plug coaxial with the curtain rod, both the left rotating shaft and the right rotating shaft are connected with the corresponding end of the shell through bearings and bearing seats 16, and the curtain rod is connected with one end of the fireproof curtain through the clamping groove arranged thereon. Generally, the distance between the left end plug and the right end plug is greater than the width of the fireproof curtain to ensure the convenience of installation and release of the fireproof curtain and avoid the situation that the edge of the fireproof curtain is clamped by the end plug. The shell where the right end plug and the right rotating shaft are located is configured with a mounting space for arranging a rotation limiting mechanism, a manual mechanism, a smoke sensing element and a control board assembly.

[0033] Specifically, the rotation limiting mechanism 20 comprises a limiting disc 21 fixedly connected with the right end plug, a plurality of limiting grooves 22 regularly arranged on the limiting disc, a limiting electromagnet 23 fixedly arranged in the shell, and an elastic limiting rod 24 arranged on the movable end of the limiting electromagnet and having an end part corresponding to the limiting groove, and the limiting electromagnet is electrically connected with the control board assembly. The elastic limiting rod 24 comprises a limiting rod body 25 fixedly connected with the movable end of the limiting electromagnet, a limiting block 26 arranged on the limiting rod body, and a thrust spring 27 sleeved on the limiting rod body and located between the limiting block and the movable end shell of the limiting electromagnet, the thrust spring provides a thrust force for the limiting rod body to keep the end part in the clamped state with the limiting groove, thereby limiting the rotation of the rotating shaft mechanism through the limiting disc, and after the limiting electromagnet is energized, the movable end is attracted and pulled to overcome the elastic force of the thrust spring to release the clamped state of the limiting rod body with the limiting groove.

[0034] Further, the limiting groove is in the shape of a circular arc groove and is arranged on the side of the limiting disc facing the limiting electromagnet with the shaft center being circumferentially distributed; and the end part of the elastic limiting rod is configured as a circular head matched with the limiting groove. Through the cooperation with the manual mechanism, the convenience of manual operation can be improved. Specifically, the manual mechanism 30 comprises a handle disc 31 arranged on the right rotating shaft or the right end plug, a guide groove 32 and a clamping hole 33 arranged on the handle disc, and a pull bead 34 arranged in the guide groove and clamped with the clamping hole, and the lower end of the pull bead is lowered to an operable height on the side of the window.

[0035] Specifically, the control board assembly comprises a PCB fixedly arranged in the housing, and a microprocessor, a power supply circuit, a rechargeable battery and a voltage boosting circuit arranged on the PCB, the power supply circuit provides power for the microprocessor and charges the rechargeable battery through an external power supply interface, the microprocessor is powered by the rechargeable battery when there is no external power supply, and the microprocessor is connected to the voltage boosting circuit to drive the rechargeable battery to output boosted power to the limiting electromagnet to drive the limiting electromagnet to close and release the elastic limiting rod from the limiting disc when a fire hazard occurs.

[0036] The voltage boosting circuit comprises a coil L1 and a coil L2 connected to one output end of the rechargeable battery, a resistor R1 connected to the coil L1, a transistor Q1 with the base connected to the resistor R1 and the collector connected to the coil L2, a switch S connected between the other output end of the rechargeable battery and the emitter of the transistor Q1 and controlled by the microprocessor, a diode D1 with the anode connected to the collector of the transistor Q1, and a capacitor C1 and a diode D2 connected in parallel with the negative electrode of the diode D1 connected to one end and the other end connected to the emitter of the transistor Q1, wherein the negative electrode of the diode D1 and the emitter of the transistor Q1 are connected to the limiting electromagnet as two output ends, and the number of turns of the coil L1 is less than that of the coil L2.

[0037] When the fireproof window curtain is used, the fireproof curtain is wound on the curtain rod in a normal state, the limiting electromagnet is not connected, the elastic limiting rod is locked to the limiting disc under the action of the push spring, the rotating shaft mechanism cannot rotate, and the fireproof curtain cannot be released due to the friction force between the elastic limiting rod and the limiting disc in the limiting groove being greater than the gravity of the gravity support rod. When a fire hazard occurs, the smoke sensing element detects a signal, the limiting electromagnet is connected through the signal transmission of the microprocessor, the elastic limiting rod is retracted under the action of the electromagnet, the locking of the limiting disc is released, the rotating shaft mechanism can rotate, the fireproof curtain is pulled down under the gravity of the gravity support rod, the window is blocked, the effect of blocking fire is achieved, and the spread of fire is avoided. Moreover, the rechargeable battery provides power, the fireproof window curtain is not affected by power failure, the capacity of the rechargeable battery does not need to be too large, the driving of the electromagnet can be realized through the voltage boosting circuit, and the cost of components can be saved.

[0038] Since the fireproof window curtain is provided with a manual mechanism, the fireproof window curtain can also be used instead of a conventional window curtain. Through the structural design of the manual mechanism and the limiting rotation mechanism, when the pull bead is manually pulled, the rotation of the handle disc to the rotating shaft can overcome the spring push force of the elastic limiting rod, so that the rotating shaft mechanism rotates, the fireproof curtain is retracted or released in a manual mode, the window is blocked, and the traditional function of shading is realized.

[0039] The above embodiments are only the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and any change made on the basis of the design principles of the present application and non-creative labor shall belong to the protection scope of the present application.

Claims

1. A dual mode roll-up fire screen, characterized in that, The application relates to a fireproof curtain device for windows, which comprises a cover, a rotating shaft mechanism, fireproof curtain cloth, a gravity supporting rod, a rotation limiting mechanism, a manual mechanism, a smoke sensing element and a control board assembly. The rotating shaft mechanism comprises a curtain rod with a horizontal shaft, a left end plug and a right end plug arranged at two ends of the curtain rod respectively, a left rotating shaft arranged on the left end plug and coaxial with the curtain rod, and a right rotating shaft arranged on the right end plug and coaxial with the curtain rod, wherein the left rotating shaft and the right rotating shaft are connected with corresponding end portions in the cover through bearings and bearing seats. The rotation limiting mechanism comprises a limiting disc fixedly connected with the right end plug, a plurality of limiting grooves regularly arranged on the limiting disc, a limiting electromagnet fixedly arranged in the cover, and an elastic limiting rod arranged on a movable end of the limiting electromagnet and with an end portion correspondingly clamped with the limiting grooves. The elastic limiting rod comprises a limiting rod body fixedly connected with the movable end of the limiting electromagnet, a limiting block arranged on the limiting rod body, and a thrust spring sleeved on the limiting rod body and located between the limiting block and a shell of the movable end of the limiting electromagnet. The limiting grooves are circular arc groove shapes and are arranged on a side of the limiting disc facing the limiting electromagnet in a circumferential distribution mode with the shaft as the center. The manual mechanism comprises a handle disc arranged on the right rotating shaft or the right end plug, a guide groove and a bayonet arranged on the handle disc, and a pull bead arranged in the guide groove and clamped with the bayonet, wherein the pull bead is vertically lowered to an operable height on a side of the window. The manual mechanism comprises a handle disc arranged on the right rotating shaft or the right end plug, a guide groove and a bayonet arranged on the handle disc, and a pull bead arranged in the guide groove and clamped with the bayonet, wherein the pull bead is vertically lowered to an operable height on a side of the window.

2. The dual mode roll-up fire screen of claim 1, wherein, The control board assembly comprises a PCB fixedly arranged in the shell, and a microprocessor, a power supply circuit, a rechargeable battery and a voltage boosting circuit arranged on the PCB, the power supply circuit is externally connected to a power supply interface to provide power for the microprocessor and recharge the rechargeable battery, the microprocessor is powered by the rechargeable battery when there is no external power supply, and the microprocessor is connected to the voltage boosting circuit to make the rechargeable battery output boosted power to drive the limit electromagnet to close when a fire hazard occurs, so that the elastic limit rod is retracted to release the limit of the limit disc.

3. The dual mode roll-up fire screen of claim 2, wherein, The voltage boosting circuit comprises a coil L1 and a coil L2 connected to one output end of the rechargeable battery, a resistor R1 connected to the coil L1, a triode Q1 with a base connected to the resistor R1 and a collector connected to the coil L2, a switch S connected between the other output end of the rechargeable battery and an emitter of the triode Q1 and controlled by the microprocessor, a diode D1 with a positive electrode connected to the collector of the triode Q1, and a capacitor C1 and a diode D2 connected in parallel, with one end of the capacitor C1 and the diode D2 connected to the negative electrode of the diode D1 and the other end connected to the emitter of the triode Q1, and the negative electrode of the diode D1 and the emitter of the triode Q1 connected to the limit electromagnet as two output ends.

4. The dual mode roll-up fire screen of claim 2, wherein, The smoke sensing element is configured as a smoke sensor, or as a smoke sensor and a temperature sensor.

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