Fireproof hidden door lock

Abstract

The utility model relates to the technical field of door locks, in particular to a fireproof hidden door lock which mainly comprises a lock body, a control panel is arranged in the middle of the front end of the lock body, a storage bin is formed in the inner side of the lock body, a handle is arranged on the inner side of the storage bin, and a high-temperature protection assembly is arranged on the inner side of the lock body and comprises a connecting mounting plate. A lock cylinder connecting piece is arranged on the inner side of the connecting mounting plate, a supporting block is arranged at the rear end of the connecting mounting plate, a temperature sensor is arranged at the top end of the connecting mounting plate, and a fireproof protective cover is arranged at the front end of the connecting mounting plate. According to the fireproof hidden door lock, when a fire disaster occurs, through temperature monitoring of a temperature sensor, power failure of an electromagnetic suction plate and descending of a fireproof protective cover under the action of gravity, then a supporting block rotates to drive a connecting mounting plate to move out, a control handle automatically ejects the interior of a door plate, and a door catch is manually rotated and adjusted conveniently for unlocking; damage of high temperature to the door lock is avoided, and fireproof safety performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of door lock technology, specifically a fireproof concealed door lock. Background Technology

[0002] A door lock is a type of lock with specific functions, used on building doors to provide safe evacuation and protection in emergency situations. Door locks are an indispensable part of modern buildings. However, existing door locks do not have a concealed function, protruding outside the door, and are not aesthetically pleasing or reliable.

[0003] Chinese patent CN209837917U discloses a concealed door lock. This utility model combines electronic and manual switches to avoid affecting the reliability of the door lock. The handle is hidden inside the door by rotating and folding, which is also aesthetically pleasing.

[0004] The aforementioned device cleverly conceals the door handle on the inside of the door. This innovative approach not only enhances the overall aesthetics of the door in daily use, making the door surface more concise and modern, but also effectively protects the door lock mechanism without affecting the normal opening and closing function. However, this design exposes potential safety hazards in emergencies such as fires. When a fire occurs, high temperatures will be rapidly conducted to the door. Since the door lock is hidden inside the door, it is directly exposed to the high-temperature environment, which may cause the lock body to deform due to thermal expansion and contraction, or the lubricating oil to fail due to high temperatures. This would make it difficult to adjust the door handle for turning and opening, affecting the fire safety performance of the door lock. Optimization and improvement are needed. Utility Model Content

[0005] The purpose of this utility model is to provide a fireproof concealed door lock to solve the problem mentioned in the background art that when a fire occurs, the high temperature may cause the lock body to deform due to thermal expansion and contraction, or the lubricating oil to fail due to high temperature, making it difficult to adjust the door handle for turning and opening.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fireproof concealed door lock, comprising:

[0007] The lock body has a control panel at the front center and a storage compartment on the inside, with a handle on the inside of the storage compartment.

[0008] The high-temperature protection component is located inside the lock body and includes a connecting mounting plate. A lock cylinder connector is located inside the connecting mounting plate, a support block is located at the rear end of the connecting mounting plate, a temperature sensor is located at the top end of the connecting mounting plate, and a fire-resistant protective cover is located at the front end of the connecting mounting plate. The high-temperature protection component is used to make the handle pop out when it encounters high temperature.

[0009] The hidden adjustment component is located inside the storage compartment and includes a telescopic sleeve with a positioning rod at the top and an ejector elastic element on the inside. The hidden adjustment component is used for the ejection and retraction of the handle.

[0010] Preferably, the connecting mounting plate is located inside the storage compartment, and the four rear corners of the connecting mounting plate are connected with connecting elastic elements.

[0011] Preferably, a power rotating rod is provided at the rear end of the connecting mounting plate, and a support block is installed on the outer side of the power rotating rod.

[0012] Preferably, the telescopic sleeve is located at the front end of the lock cylinder connector, and an adjustment tube is welded to the top wall of the telescopic sleeve.

[0013] Preferably, a positioning rod is provided on the inner side of the adjusting tube, and an elastic limiting member is sleeved on the outer side of the positioning rod.

[0014] Preferably, the handle has a positioning hole inside, and a limit stop is connected to the rear end of the handle, with an ejector elastic member connected to the rear side of the limit stop.

[0015] Preferably, sliding grooves are provided on both the left and right sides of the front wall of the lock body, and an electromagnetic suction plate is connected to the middle of the front end of the lock body.

[0016] Preferably, a fire-resistant protective cover is provided at the front end of the sliding groove, and an adsorption iron block is provided at the top of the fire-resistant protective cover, and a toggle block is provided at the front end of the fire-resistant protective cover.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] In the event of a fire or other abnormal use, this utility model uses a temperature sensor to monitor the temperature, de-energizes the electromagnetic suction plate, and causes the fire-resistant protective cover to descend under gravity. Then, the support block rotates, causing the connecting mounting plate to move out, and the control handle to automatically push into the door panel, making it easy to manually rotate and adjust the latch to unlock, avoiding damage to the door lock from high temperatures, and improving fire safety performance.

[0019] After the positioning rod is pulled upward from the inside, the handle can be squeezed inward. Then, the elastic limiter causes the positioning rod to return to its original position, positioning the handle so that it can be stored inside the storage compartment. This hidden design improves both aesthetics and safety. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the unlocking mode of this utility model;

[0022] Figure 3 This is a schematic diagram of the partially separated three-dimensional structure of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the hidden adjustment component of this utility model.

[0024] In the diagram: 1. Lock body; 2. Control panel; 3. Storage compartment; 4. Handle; 5. Telescopic sleeve; 6. Adjusting tube; 7. Positioning rod; 8. Elastic limit component; 9. Positioning hole; 10. Limiting stop plate; 11. Ejection elastic component; 12. Lock cylinder connector; 13. Connecting mounting plate; 14. Connecting elastic component; 15. Power rotating rod; 16. Support block; 17. Temperature sensor; 18. Electromagnetic suction plate; 19. Fire-resistant protective cover; 20. Adsorption iron block; 21. Actuating block; 22. Sliding groove. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0027] like Figure 1-4 As shown, this application provides a fireproof concealed door lock, including: a lock body 1, a control panel 2 is provided at the center of the front end of the lock body 1, and a storage compartment 3 is provided on the inner side of the lock body 1, and a handle 4 is provided on the inner side of the storage compartment 3.

[0028] The inner side of the lock body 1 is provided with a high temperature protection component, which includes a connecting mounting plate 13. The inner side of the connecting mounting plate 13 is provided with a lock cylinder connector 12, and the rear end of the connecting mounting plate 13 is provided with a support block 16. The top end of the connecting mounting plate 13 is provided with a temperature sensor 17, and the front end of the connecting mounting plate 13 is provided with a fire-resistant protective cover 19. The high temperature protection component is used to make the handle 4 pop out when it encounters high temperature.

[0029] Specifically, such as Figure 3 As shown, the connecting mounting plate 13 is located inside the storage compartment 3, and each of the four rear corners of the connecting mounting plate 13 is connected to a connecting elastic element 14, which controls the elastic reset connection of the connecting mounting plate 13.

[0030] Specifically, such as Figure 3 As shown, a power rotating rod 15 is provided at the rear end of the connecting mounting plate 13, and a support block 16 is installed on the outer side of the power rotating rod 15. The power rotating rod 15 controls the support block 16 to rotate, which will push the connecting mounting plate 13 out, thereby driving the inner handle 4 to move out actively.

[0031] Specifically, such as Figure 2 and Figure 3 As shown, sliding grooves 22 are provided on both the left and right sides of the front wall of the lock body 1, and an electromagnetic suction plate 18 is connected to the middle of the front end of the lock body 1. When the electromagnetic suction plate 18 is energized, the electromagnetic suction plate 18 is de-energized when the temperature sensor 17 triggers a predetermined high temperature value, so that the fireproof protective cover 19 at the bottom slides down the inside of the sliding groove 22 under the action of gravity.

[0032] Specifically, such as Figure 2 As shown, a fire-resistant protective cover 19 is provided at the front end of the sliding groove 22, and an adsorption iron block 20 is provided at the top of the fire-resistant protective cover 19. A toggle block 21 is provided at the front end of the fire-resistant protective cover 19. The fire-resistant protective cover 19 is made of glass wool board, which is used to prevent fire from damaging the interior of the lock body 1. The adsorption iron block 20 is connected to the electromagnetic suction plate 18 for adsorption and fixation of the fire-resistant protective cover 19. The toggle block 21 facilitates the movement of the fire-resistant protective cover 19.

[0033] The storage compartment 3 has a hidden adjustment component on its inner side, which includes a telescopic sleeve 5. The top of the telescopic sleeve 5 is provided with a positioning rod 7, and the inner side of the telescopic sleeve 5 is provided with an ejector elastic element 11. The hidden adjustment component is used for the ejection and retraction of the handle 4.

[0034] Specifically, such as Figure 4 As shown, the telescopic sleeve 5 is located at the front end of the lock cylinder connector 12, and an adjusting tube 6 is welded to the top wall of the telescopic sleeve 5. The adjusting tube 6 is connected to the telescopic sleeve 5 and is used to insert and control the position of the handle 4.

[0035] Specifically, such as Figure 4 As shown, a positioning rod 7 is provided on the inner side of the adjusting tube 6, and an elastic limiting member 8 is sleeved on the outer side of the positioning rod 7. The elastic force of the elastic limiting member 8 can drive the positioning rod 7 to press down and lock the handle 4 in place.

[0036] Specifically, such as Figure 4 As shown, the handle 4 has a positioning hole 9 inside, and a limit stop 10 is connected to the rear end of the handle 4. An ejection elastic member 11 is connected to the rear side of the limit stop 10. The limit stop 10 limits the movement of the handle 4. Then the positioning hole 9 positions the retracted handle 4. The ejection elastic member 11 facilitates the ejection of the handle 4. The telescopic sleeve 5 has a limit groove inside, which restricts the forward and backward movement of the handle 4.

[0037] In this embodiment: during abnormal use such as fire, the electromagnetic suction plate 18 is de-energized by temperature monitoring through temperature sensor 17, the fireproof protective cover 19 descends under the action of gravity, and then the support block 16 rotates, driving the connecting mounting plate 13 to move out, controlling the handle 4 to automatically push into the door panel, making it easy to manually rotate and adjust the door latch to unlock, avoiding damage to the door lock from high temperature. After being pulled upward by the positioning rod 7 on the inside, the handle 4 can be squeezed inward, and then the elastic limit member 8 drives the positioning rod 7 to reset, inserting and positioning the handle 4, so that the handle 4 can be stored inside the storage compartment 3.

[0038] The specific design is as follows: the lock body 1 is installed on the door, the control panel 2 electrically controls the opening and closing of the door, and the handle 4 on the inside can be manually controlled. To improve aesthetics, the handle 4 is hidden in the storage compartment 3. When needed, the fireproof protective cover 19 is slid down, and then the positioning rod 7 is pulled up. Under the action of the limit stop plate 10 and the push-out elastic member 11, the handle 4 pops out a certain distance, which facilitates the rotation of the handle 4. In the event of a fire, when the temperature exceeds the predetermined value detected by the temperature sensor 17, the electromagnetic suction plate 18 is de-energized, allowing the fireproof protective cover 19 to descend under the action of gravity, exposing the storage compartment 3. Then, the power rotating rod 15 controls the support block 16 to rotate, squeezing and supporting the inside of the connecting mounting plate 13, and then pushing out the entire lock cylinder connector 12 and the handle 4. The lock cylinder connector 12 is equipped with a telescopic mechanism to adapt to the position adjustment of the connecting mounting plate 13, so that the handle 4 pops out without manual operation, avoiding affecting the emergency opening of the door and improving a certain level of safety performance.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0040] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fireproof concealed door lock, comprising: A lock body (1), wherein a control panel (2) is provided at the center of the front end of the lock body (1), and a storage compartment (3) is provided on the inner side of the lock body (1), wherein a handle (4) is provided on the inner side of the storage compartment (3), characterized in that, A high-temperature protection component is provided inside the lock body (1). The high-temperature protection component includes a connecting mounting plate (13). A lock cylinder connector (12) is provided inside the connecting mounting plate (13). A support block (16) is provided at the rear end of the connecting mounting plate (13). A temperature sensor (17) is provided at the top end of the connecting mounting plate (13). A fire-resistant protective cover (19) is provided at the front end of the connecting mounting plate (13). The high-temperature protection component is used to make the handle (4) pop out when it encounters high temperature. The hidden adjustment component is located inside the storage compartment (3) and includes a telescopic sleeve (5). A positioning rod (7) is provided at the top of the telescopic sleeve (5), and an ejector elastic element (11) is provided inside the telescopic sleeve (5). The hidden adjustment component is used for the ejection and retraction of the handle (4).

2. The fireproof concealed door lock according to claim 1, characterized in that, The connecting mounting plate (13) is located inside the storage compartment (3), and the four corners of the rear end of the connecting mounting plate (13) are connected with connecting elastic elements (14).

3. A fireproof concealed door lock according to claim 1, characterized in that, The rear end of the connecting mounting plate (13) is provided with a power rotating rod (15), and a support block (16) is installed on the outside of the power rotating rod (15).

4. A fireproof concealed door lock according to claim 1, characterized in that, The telescopic sleeve (5) is located at the front end of the lock core connector (12), and an adjustment tube (6) is welded to the top wall of the telescopic sleeve (5).

5. A fireproof concealed door lock according to claim 4, characterized in that, The inner side of the regulating tube (6) is provided with a positioning rod (7), and an elastic limiting member (8) is sleeved on the outer side of the positioning rod (7).

6. A fireproof concealed door lock according to claim 1, characterized in that, The handle (4) has a positioning hole (9) inside, and a limit stop (10) is connected to the rear end of the handle (4). An ejector elastic member (11) is connected to the rear side of the limit stop (10).

7. A fireproof concealed door lock according to claim 1, characterized in that, The front wall of the lock body (1) is provided with sliding grooves (22) on both the left and right sides, and an electromagnetic suction plate (18) is connected to the middle of the front end of the lock body (1).

8. A fireproof concealed door lock according to claim 7, characterized in that, The front end of the sliding groove (22) is provided with a fire-resistant protective cover (19), and the top of the fire-resistant protective cover (19) is provided with an adsorption iron block (20), and the front end of the fire-resistant protective cover (19) is provided with a toggle block (21).

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