Liftable fire alarm

Abstract

The utility model discloses a liftable fire alarm, which relates to the technical field of fire alarms and comprises an alarm body used for fire early warning. The device further comprises a fixing base, a mounting base, a connecting base and a lifting mechanism. The fixed seat is arranged on a ceiling through screws; the mounting seat is detachably connected with the fixing seat; the mounting seat is located above the connecting seat, and the connecting seat is arranged at the top of the alarm body; a mounting cavity is formed in the top of the connecting seat, and the lifting mechanism is arranged in the mounting cavity; the lifting mechanism comprises a bidirectional motor, a driving shaft, a winding wheel and a lifting rope; the driving shafts are symmetrically arranged at the output ends of the two sides of the bidirectional motor in groups; according to the fire alarm, the vertical height can be easily and flexibly adjusted, the fire alarm can be conveniently overhauled and maintained or a battery is conveniently replaced, meanwhile, the installation stability of the alarm body is guaranteed, replacement is easy, and the replacement cost is low.

Description

Technical Field

[0001] This utility model relates to the field of fire alarm technology, specifically a liftable fire alarm. Background Technology

[0002] With the increasing use of fire and electricity in modern hotels, restaurants, entertainment venues, and homes, the frequency of various fires is increasing. In order to detect fires early and avoid significant loss of life and property, people now generally install fire alarms. There are many types and styles of existing alarms. In terms of principle and function, they mainly include ionization, photoelectric, and temperature sensing types. Alarms use highly sensitive detection elements installed inside to detect abnormal changes in air temperature and gas content and issue alarm signals.

[0003] Alarms are typically installed on the ceiling, making it difficult to adjust their height and timely maintenance. When the batteries run out, replacing them requires a ladder or special tools, which is inconvenient and even risky for the elderly, disabled, and pregnant women. Furthermore, currently available height-adjustable alarms have poor stability during the lifting process, resulting in significant shaking. If a problem occurs, the entire unit needs to be replaced, leading to high costs. Utility Model Content

[0004] The purpose of this utility model is to provide a height-adjustable fire alarm that is easy to adjust in height, making it convenient for inspection, maintenance, or battery replacement. At the same time, it ensures the installation stability of the alarm body and is easy to replace with low replacement cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a liftable fire alarm, comprising an alarm body for fire early warning; and further comprising a fixed base, a mounting base, a connecting base, and a lifting mechanism; the fixed base is mounted on the ceiling by screws; the mounting base and the fixed base are detachably connected; the mounting base is located above the connecting base, which is located on the top of the alarm body; the top of the connecting base has an installation cavity, and the lifting mechanism is located within the installation cavity; the lifting mechanism comprises a bidirectional motor, a drive shaft, a winding wheel, and a suspension rope; the bidirectional motor is mounted on the bottom of the installation cavity via a base; the drive shafts are symmetrically arranged in groups at the output ends on both sides of the bidirectional motor, and one end of the drive shaft is rotatably connected to the inner wall of the installation cavity via a bearing; the winding wheel is mounted on the drive shaft; one end of the suspension rope is mounted on the winding wheel, and the other end of the suspension rope is located at the bottom of the mounting base;

[0006] The mounting base has a groove at the bottom, and an iron block is embedded in the top of the groove. The top of the connecting base is provided with an electromagnetic block that matches the groove, and the electromagnetic block is located in the groove.

[0007] To facilitate the replacement of the alarm body, as a preferred embodiment of this utility model of a liftable fire alarm, the bottom of the connecting seat is provided with a threaded groove, and the top of the alarm body is provided with a threaded post that matches the threaded groove, the threaded post being threaded into the threaded groove.

[0008] To facilitate the assembly and disassembly of the mounting base and the fixing base, in a preferred embodiment of this utility model of a liftable fire alarm, the top of the mounting base is provided with a rectangular locking block. Each side of the locking block is provided with a locking shaft, and the center of each side of the mounting base is provided with a shaft hole that matches the locking shaft. The locking shaft is located inside the shaft hole. A spring is provided between the shaft hole and the locking shaft, and when the spring deforms, the locking shaft can move along the axial direction of the shaft hole. The other end of the locking shaft is provided with a semi-circular locking head, which is located outside the shaft hole. The bottom of the fixing base is provided with a locking groove that matches the locking block, and the locking block is located inside the locking groove. The inner wall of the locking groove is provided with a locking hole that matches the locking head, which is located inside the locking hole.

[0009] To facilitate easy control of the bidirectional motor and the electromagnetic block's on / off power, a preferred embodiment of this utility model of a liftable fire alarm also includes a remote control, an infrared receiver, a lithium battery, and a controller; the infrared receiver is mounted on a connecting base, and the lithium battery and controller are located inside the connecting base; the controller is electrically connected to the infrared receiver, the bidirectional motor, and the electromagnetic block respectively; the lithium battery supplies power to the bidirectional motor, the electromagnetic block, the controller, and the infrared receiver respectively.

[0010] For easy battery replacement, as a preferred embodiment of this utility model of a liftable fire alarm, the alarm body and the connecting base are provided with a removable battery casing.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This invention features a bidirectional motor that, when activated, drives the winding wheel counterclockwise, lengthening the suspension rope and causing the connecting seat and alarm body to move downwards. This facilitates lowering the alarm body for easy inspection, maintenance, or battery replacement. Alternatively, activating the bidirectional motor and driving the winding wheel clockwise shortens the suspension rope, pulling the connecting seat and alarm body upwards. This enables the alarm body to lift and lower, energizing the electromagnetic block. The electromagnetic block generates a magnetic field that attracts the iron block, locking it into a groove. This improves the tightness of the connection between the connecting seat and the mounting base, ensuring the stability of the alarm body's installation. When the alarm body malfunctions, only the alarm body needs replacement via the threaded post and groove, eliminating the need for complete replacement and reducing costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the AA-direction structure;

[0015] Figure 3 This is a bottom view of the mounting base of this utility model.

[0016] In the diagram: 1. Alarm body; 2. Fixing base; 3. Mounting base; 4. Connecting base; 5. Mounting cavity; 6. Bidirectional motor; 7. Drive shaft; 8. Winding wheel; 9. Suspension rope; 10. Groove; 11. Iron block; 12. Electromagnetic block; 13. Threaded groove; 14. Threaded column; 15. Clamping block; 16. Clamping shaft; 17. Shaft hole; 18. Spring; 19. Clamping head; 20. Clamping slot; 21. Clamping hole; 22. Remote control; 23. Infrared receiver; 24. Lithium battery; 25. Controller; 26. Battery casing. Detailed Implementation

[0017] Please see Figures 1 to 3 A liftable fire alarm includes an alarm body 1 for fire warning; it also includes a fixed base 2, a mounting base 3, a connecting base 4, and a lifting mechanism; the fixed base 2 is mounted on the ceiling with screws; the mounting base 3 and the fixed base 2 are detachably connected; the mounting base 3 is located above the connecting base 4, which is located on the top of the alarm body 1; the top of the connecting base 4 has an installation cavity 5, and the lifting mechanism is located inside the installation cavity 5; the lifting mechanism includes a bidirectional motor 6, a drive shaft 7, a winding wheel 8, and a suspension rope 9; the bidirectional motor 6 is mounted on the bottom of the installation cavity 5 via a base; the drive shaft 7 is symmetrically arranged in groups at the output ends on both sides of the bidirectional motor 6, and one end of the drive shaft 7 is rotatably connected to the inner wall of the installation cavity 5 via a bearing; the winding wheel 8 is mounted on the drive shaft 7; one end of the suspension rope 9 is mounted on the winding wheel 8, and the other end of the suspension rope 9 is located at the bottom of the mounting base 3;

[0018] The mounting base 3 has a groove 10 at the bottom, and an iron block 11 is embedded in the top of the groove 10. The top of the connecting base 4 has an electromagnetic block 12 that matches the groove 10, and the electromagnetic block 12 is located in the groove 10.

[0019] In this embodiment: when inspecting, maintaining, or replacing the battery of the fire alarm; by starting the bidirectional motor 6, the drive shaft 7 drives the winding wheel 8 to rotate counterclockwise, thereby lengthening the suspension rope 9. The connecting seat 4 and the alarm body 1 move downwards, making it easier to lower the alarm body 1 and facilitate the inspection, maintenance, or battery replacement of the fire alarm; after the inspection, maintenance, or battery replacement is completed; the bidirectional motor 6 is started, and the drive shaft 7 drives the winding wheel 8 to rotate clockwise, winding the suspension rope 9. The suspension rope 9 shortens and pulls the connecting seat 4 and the alarm body 1 upwards, enabling the alarm body 1 to achieve a lifting function. This also makes the inspection, maintenance, or battery replacement of the fire alarm convenient and improves the ease of use; moreover, the bidirectional motor 6 is installed in the mounting cavity 5 of the connecting seat 4, which also facilitates the periodic inspection of the bidirectional motor 6;

[0020] Furthermore, when the alarm body 1 is lowered via the iron block 11 and the electromagnetic block 12, the electromagnetic block 12 is de-energized, loses its magnetic force, and the drive shaft 7 drives the winding wheel 8 to rotate counterclockwise, allowing the alarm body 1 to move smoothly downwards. When the drive shaft 7 drives the winding wheel 8 to rotate clockwise, it winds the suspension rope 9, which shortens and pulls the connecting seat 4 and the alarm body 1 upwards. When the alarm body 1 rises, it energizes the electromagnetic block 12, which generates a magnetic field that attracts the iron block 11 and causes the electromagnetic block 12 to be locked in the groove 10, thereby improving the tightness of the connection between the connecting seat 4 and the mounting seat 3.

[0021] As a technical optimization of this utility model, the bottom of the connecting seat 4 is provided with a threaded groove 13, and the top of the alarm body 1 is provided with a threaded post 14 that is adapted to the threaded groove 13. The threaded post 14 is threaded into the threaded groove 13.

[0022] In this embodiment: the connecting seat 4 and the alarm body 1 are further disassembled by the threaded post 14 and the threaded groove 13; and when the alarm body 1 has a problem, only the alarm body 1 needs to be replaced, and the whole thing does not need to be replaced, which is low cost (the replacement alarm is an alarm that is compatible with the connecting seat 4 and has a threaded post 14 on the top).

[0023] As a technical optimization of this utility model, the top of the mounting base 3 is provided with a rectangular locking block 15, and each side of the locking block 15 is provided with a locking shaft 16. The center of each side of the mounting base 3 is provided with a shaft hole 17 that matches the locking shaft 16, and the locking shaft 16 is located in the shaft hole 17. A spring 18 is provided between the shaft hole 17 and the locking shaft 16. When the spring 18 deforms, the locking shaft 16 can move along the axial direction of the shaft hole 17. The other end of the locking shaft 16 is provided with a semi-circular locking head 19, which is located outside the shaft hole 17. The bottom of the fixing base 2 is provided with a locking groove 20 that matches the locking block 15, and the locking block 15 is located in the locking groove 20. The inner wall of the locking groove 20 is provided with a locking hole 21 that matches the locking head 19, and the locking head 19 is located in the locking hole 21.

[0024] In this embodiment: pushing the mounting base 3 upward causes the clamping head 19 to push the clamping shaft 16 into the shaft hole 17, making it easy for the clamping block 15 to fit into the clamping groove 20; after installation, the clamping head 19 is aligned with the clamping hole 21, and the clamping head 19 and the clamping shaft 16 are reset under the elastic force of the spring 18, so that the clamping head 19 is locked in the clamping hole 21, preventing the clamping block 15 from falling out of the clamping groove 20, and enabling the mounting base 3 and the fixing base 2 to be easily disassembled.

[0025] As a technical optimization of this utility model, it also includes a remote control 22, an infrared receiver 23, a lithium battery 24, and a controller 25; the infrared receiver 23 is disposed on the connector 4, and the lithium battery 24 and the controller 25 are disposed inside the connector 4. The controller 25 is electrically connected to the infrared receiver 23, the bidirectional motor 6, and the electromagnetic block 12 respectively; the lithium battery 24 provides power to the bidirectional motor 6, the electromagnetic block 12, the controller 25, and the infrared receiver 23 respectively.

[0026] In this embodiment: the infrared receiver 23 can receive the signal sent by the remote controller 22, and the infrared receiver 23 converts the received infrared signal into an electrical signal and transmits it to the controller 25 for processing. After processing, the controller 25 controls the bidirectional motor 6 and the electromagnetic block 12 to perform corresponding operations.

[0027] The controller 25 is a single-chip microcomputer controller, and the forward and reverse rotation of the bidirectional motor 6 is controlled by the controller 25. The remote control 22 is equipped with a control switch, a start button for the bidirectional motor 6 to rotate forward and a start button for rotating in reverse, as well as a power-on button and a power-off button for the electromagnetic block 12 (these are all existing technologies).

[0028] As a technical optimization of this utility model, the alarm body 1 and the connecting base 4 are provided with a detachable battery shell 26.

[0029] In this embodiment: opening the battery case 26 on the alarm body 1 allows for the replacement of the battery inside the alarm body 1; opening the battery case 26 on the connector 4 allows for the replacement of the lithium battery 24 inside the connector 4.

[0030] Working Principle: First, when inspecting, maintaining, or replacing the battery of the fire alarm, the electromagnetic block 12 is de-energized, and the bidirectional motor 6 and drive shaft 7 drive the winding wheel 8 to rotate counterclockwise, lengthening the suspension rope 9. This causes the connecting seat 4 and the alarm body 1 to move downwards, making it easier to lower the alarm body 1 for inspection, maintenance, or battery replacement. After inspection, maintenance, or battery replacement, the bidirectional motor 6 is activated, and drive shaft 7 drives the winding wheel 8 to rotate clockwise, winding the suspension rope 9. The suspension rope 9 shortens and pulls the connecting seat 4 and the alarm body 1 upwards, enabling the alarm body 1 to achieve a lifting function. The electromagnetic block 12 is energized, generating a magnetic field that attracts the iron block 11 and causes the electromagnetic block 12 to engage in the groove 10, improving the tightness of the connection between the connecting seat 4 and the mounting seat 3 and ensuring the installation stability of the alarm body 1. When the alarm body 1 malfunctions, only the alarm body 1 needs to be replaced via the threaded post 14 and threaded groove 13, eliminating the need for complete replacement and reducing costs.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A liftable fire alarm, comprising an alarm body (1), the alarm body (1) being used for fire early warning; characterized in that: It also includes a fixed base (2), a mounting base (3), a connecting base (4), and a lifting mechanism; the fixed base (2) is mounted on the ceiling by screws; the mounting base (3) and the fixed base (2) are detachably connected; the mounting base (3) is located above the connecting base (4), and the connecting base (4) is located on the top of the alarm body (1); the top of the connecting base (4) has an installation cavity (5), and the lifting mechanism is located inside the installation cavity (5); the lifting mechanism includes a bidirectional motor (6), a drive shaft (7), a winding wheel (8), and a suspension rope (9); the bidirectional motor (6) is mounted on the bottom of the installation cavity (5) through a base; the drive shafts (7) are symmetrically arranged in groups on the output ends of the bidirectional motors (6), and one end of the drive shaft (7) is rotatably connected to the inner wall of the installation cavity (5) through a bearing; the winding wheel (8) is mounted on the drive shaft (7); one end of the suspension rope (9) is mounted on the winding wheel (8), and the other end of the suspension rope (9) is located at the bottom of the mounting base (3); The mounting base (3) has a groove (10) at the bottom, and an iron block (11) is embedded in the top of the groove (10). The connecting base (4) has an electromagnetic block (12) that is compatible with the groove (10) at the top, and the electromagnetic block (12) is located in the groove (10).

2. The liftable fire alarm according to claim 1, characterized in that: The bottom of the connecting seat (4) is provided with a threaded groove (13), and the top of the alarm body (1) is provided with a threaded post (14) that is compatible with the threaded groove (13). The threaded post (14) is threaded into the threaded groove (13).

3. A liftable fire alarm according to claim 1, characterized in that: The top of the mounting base (3) is provided with a rectangular locking block (15). Each side of the locking block (15) is provided with a locking shaft (16), and the center of each side of the mounting base (3) is provided with a shaft hole (17) that matches the locking shaft (16). The locking shaft (16) is located in the shaft hole (17). A spring (18) is provided between the shaft hole (17) and the locking shaft (16). When the spring (18) deforms, the locking shaft (16) can move along... The shaft hole (17) moves axially; the other end of the clamping shaft (16) is provided with a semi-circular clamping head (19), which is located outside the shaft hole (17); the bottom of the fixing seat (2) is provided with a clamping groove (20) that matches the clamping block (15), the clamping block (15) is located in the clamping groove (20), and the inner wall of the clamping groove (20) is provided with a clamping hole (21) that matches the clamping head (19), which is located in the clamping hole (21).

4. A liftable fire alarm according to claim 1, characterized in that: It also includes a remote control (22), an infrared receiver (23), a lithium battery (24), and a controller (25); the infrared receiver (23) is mounted on a connector (4), and the lithium battery (24) and the controller (25) are mounted inside the connector (4). The controller (25) is electrically connected to the infrared receiver (23), the bidirectional motor (6), and the electromagnetic block (12) respectively; the lithium battery (24) supplies power to the bidirectional motor (6), the electromagnetic block (12), the controller (25), and the infrared receiver (23).

5. A liftable fire alarm according to claim 1, characterized in that: The alarm body (1) and the connector (4) are provided with a removable battery case (26).

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