Temperature control automatic locking device for fireproof window

Abstract

The utility model discloses a temperature-control automatic locking device for a fireproof window, and the device comprises a window body which comprises a window frame and a window sash, and the window sash is rotatably arranged in the window frame through a rotating shaft; the motor is arranged in the window frame and used for driving the window sash to be closed; the starting structure comprises a starting switch and a bimetallic strip, the starting switch is arranged in the window frame, and the bimetallic strip is arranged at the position right opposite to the starting switch and used for being bent when the set temperature is reached so as to press the starting switch to start the motor; the power-off structure comprises a power-off switch and a trigger block, the power-off switch is vertically arranged in the window frame, the trigger block is arranged at the position right opposite to the power-off switch and used for disconnecting a power source of the motor, and when the window sash is closed on the window frame, the trigger block is pushed by the window sash to trigger the power-off switch.

Description

Technical Field

[0001] The present application relates to the technical field of fireproof windows, and in particular to a temperature-controlled automatic locking device for fireproof windows. Background Art

[0002] As an important building fire safety facility, fireproof windows have the main function of effectively preventing the spread of flames and smoke when a fire occurs, thereby buying precious time for people to escape and fire rescue.

[0003] Existing fireproof windows are generally required to automatically lock in the event of a fire. However, the existing temperature-controlled self-locking structure can refer to a fireproof window with a hidden automatic window closer proposed in Publication No. CN212583494U. When there is a fire, when the temperature reaches a certain level, the heat-sensitive element glass ball inside the thermostat shatters, prompting the window sash to automatically close under the action of the opening and closing force of the window closer. It can be seen that this type of fireproof window usually uses a heat-sensitive element glass ball to activate the closing structure. However, the temperature-sensitive shattering ball is irreversible after shattering and cannot be used multiple times.

[0004] Therefore, how to make the fireproof window automatically locked in case of fire and at the same time, can be used multiple times is the purpose of this application.

[0005] The above content is only used to assist in understanding the technical solution of this application, and does not mean that the above content is the closest prior art to this application. Summary of the Invention

[0006] Based on this, the present application provides a temperature-controlled automatic locking device for fireproof windows to solve one of the above technical problems.

[0007] The technical solution adopted by the present application to solve its technical problem is as follows: a window body, including a window frame and a window sash, the window sash being rotatably arranged inside the window frame through a rotating shaft; a motor being arranged inside the window frame, for driving the window sash to close; a starting structure, including a starting switch and a bimetallic strip, the starting switch being arranged inside the window frame, the bimetallic strip being arranged at a position directly opposite to the starting switch, for bending when a set temperature is reached, so as to press the starting switch to start the motor; a power-off structure, including a power-off switch and a trigger block, the power-off switch being vertically arranged inside the window frame, the trigger block being arranged at a position directly opposite to the power-off switch, for disconnecting the power supply of the motor, and when the window sash is closed on the window frame, the trigger block is pushed by the window sash to trigger the power-off switch.

[0008] In some embodiments, the bimetallic strip is composed of two metals, and the thermal expansion coefficient of the metal on the other side facing the start switch is greater than the thermal expansion coefficient of the metal on the other side.

[0009] In some embodiments, the bimetallic strip is normally in a flat state.

[0010] In some embodiments, the set temperature is 60°C-75°C.

[0011] In some embodiments, an inner ratchet is provided at one end of the motor output shaft.

[0012] In some embodiments, a first gear is provided on a side of the inner ratchet away from the motor, a second gear is provided at one end of the rotating shaft, and the first gear is meshed with the second gear.

[0013] In some embodiments, the number of teeth on the first gear is smaller than the number of teeth on the second gear.

[0014] In some embodiments, at least a portion of the trigger block extends out of the window frame.

[0015] The beneficial effect of the present application is that when the indoor temperature rises to the set temperature, the bimetallic strip pops up, touches the start switch, starts the motor, and the motor drives the window sash to close through the gear until the window sash is completely closed, causing the trigger block to activate the power-off switch, and the motor stops moving to prevent damage to the motor. Until the temperature returns to normal, the bimetallic strip returns to a flat state and can be reused repeatedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0018] Figure 2 It is a schematic diagram of the internal installation of this application.

[0019] Figure 3 It is a schematic diagram of the startup structure of this application.

[0020] Figure 4 It is a cross-sectional schematic diagram of the power-off structure of this application.

[0021] Explanation of the accompanying drawings: 1. Window body; 11. Window frame; 12. Window sash; 13. Rotating shaft; 2. Motor; 21. Inner ratchet; 22. First gear; 23. Second gear; 3. Starting structure; 31. Starting switch; 32. Bimetallic strip; 4. Power-off structure; 41. Power-off switch; 42. Trigger block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection of this application.

[0023] In the examples of this application, please refer to Figure 1-4 As shown, the present application provides a temperature-controlled automatic locking device for fireproof windows, which mainly includes: a window body 1, including a window frame 11 and a window sash 12, and the window sash is rotatably arranged inside the window frame 11 through a rotating shaft 13; a motor 2, arranged inside the window frame 11, and used to drive the window sash 12 to close; a starting structure 3, including a starting switch 31 and a bimetallic strip 32, the starting switch 31 is arranged inside the window frame 11, and the bimetallic strip 32 is arranged at a position opposite to the starting switch 31, and is used to bend when a set temperature is reached to press the starting switch 31 to start the motor 2; a power-off structure 4, including a power-off switch 41 and a trigger block 42, the power-off switch 41 is vertically arranged inside the window frame 11, and the trigger block 42 is arranged at a position opposite to the power-off switch 41, and is used to disconnect the power supply of the motor 2. When the window sash 12 is closed on the window frame 11, the trigger block 42 is pushed by the window sash 12 to trigger the power-off switch 41.

[0024] Specifically, when the indoor temperature rises to a threshold value, the bimetallic strip 32 pops up, the motor 2 starts to start, and drives the window sash 12 to close. When the window sash 12 is fully closed, the trigger block 42 resists upward, triggering the power-off switch 41, and the motor 2 stops moving, preventing movement damage caused by continued movement of the motor 2.

[0025] Some preferred / improved embodiments based on the above embodiments will be described below. Any one of the following embodiments may be selected, or multiple embodiments may be selected and combined.

[0026] Specifically, in order to enable the bimetallic strip 32 to bounce and trigger the start switch 31 during a fire, the bimetallic strip 32 is composed of two metals, and the thermal expansion coefficient of the metal on the other side facing the start switch 31 is greater than the thermal expansion coefficient of the metal on the other side.

[0027] More specifically, in order to prevent the bimetallic strip 32 from falling off due to bouncing, the bimetallic strip 32 is normally in a flat state.

[0028] Preferably, the set temperature is 60°C-75°C. This setting ensures that the fireproof windows can be closed in time in case of fire, preventing the fire from continuing to spread due to failure to close them in time.

[0029] Reference Figure 2 As shown, an inner ratchet 21 is provided at one end of the output shaft of the motor 2 .

[0030] Preferably, to enable the motor 2 to drive the window sash 12 to close when it rotates, a first gear 22 is provided on the side of the inner ratchet 21 away from the motor 2, and a second gear 23 is provided at one end of the rotating shaft 13, with the first gear 22 meshing with the second gear 23. This arrangement ensures that the output shaft of the motor can only drive the window sash 12 to close. When the window is manually opened, the inner ratchet 21 remains disengaged from the first gear 22, thereby preventing damage to the motor 2.

[0031] Furthermore, the number of teeth of the first gear 22 is smaller than the number of teeth of the second gear 23. With this arrangement, the gears play a role of deceleration, thereby preventing problems caused by excessive rotation speed.

[0032] Preferably, in order to enable the trigger block 42 to touch the power off switch 41 when the window sash 12 is closed, at least a portion of the trigger block 42 extends out of the window frame.

[0033] Thus far, various embodiments of the present application have been described in detail. To avoid obscuring the concept of the present application, some details well known in the art have not been described. Based on the above description, those skilled in the art will fully understand how to implement the technical solutions disclosed herein.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present application, and the aforementioned embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A temperature-controlled automatic locking device for fireproof windows. It is characterized in that include: The window body comprises a window frame and a window sash, wherein the window sash is rotatably arranged inside the window frame via a rotating shaft; A motor, arranged inside the window frame, for driving the window sash to close; A starting structure, comprising a starting switch and a bimetallic strip, wherein the starting switch is arranged inside the window frame, and the bimetallic strip is arranged at a position directly opposite to the starting switch, and is used to bend when a set temperature is reached, so as to press the starting switch to start the motor; The power-off structure includes a power-off switch and a trigger block. The power-off switch is vertically arranged inside the window frame, and the trigger block is arranged at a position directly opposite to the power-off switch to disconnect the power supply of the motor. When the window sash is closed on the window frame, the trigger block is pushed by the window sash to trigger the power-off switch.

2. A temperature-controlled automatic locking device for fireproof windows according to claim 1, It is characterized in that The bimetallic strip is composed of two metals, and the thermal expansion coefficient of the metal on the other side facing the start switch is greater than the thermal expansion coefficient of the metal on the other side.

3. A temperature-controlled automatic locking device for fireproof windows according to claim 2, It is characterized in that The bimetallic strip is normally in a flat state.

4. A temperature-controlled automatic locking device for fireproof windows according to claim 1, It is characterized in that The set temperature is 60°C-75°C.

5. A temperature-controlled automatic locking device for fireproof windows according to claim 1, It is characterized in that An inner ratchet is arranged at one end of the motor output shaft.

6. A temperature-controlled automatic locking device for fireproof windows according to claim 5, It is characterized in that A first gear is arranged on a side of the inner ratchet away from the motor, a second gear is arranged on one end of the rotating shaft, and the first gear is meshed with the second gear.

7. A temperature-controlled automatic locking device for fireproof windows according to claim 6, It is characterized in that The number of teeth of the first gear is smaller than the number of teeth of the second gear.

8. A temperature-controlled automatic locking device for fireproof windows according to claim 1, It is characterized in that At least a portion of the trigger block extends out of the window frame.

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