Smoke detection and alarm device

Abstract

The utility model relates to the technical field of smoke alarms, and discloses a smoke detection and alarm device, which comprises an alarm body and a mounting plate, the top of the alarm body is fixedly connected with two connecting columns, one side of the inner wall of each connecting column is fixedly connected with a spring I, the other end of each spring I is fixedly connected with a clamping block, and the clamping block is fixedly connected with the mounting plate. Two sliding grooves are formed in the bottom of the mounting plate, T-shaped blocks are slidably connected to the inner sides of the sliding grooves, sliding columns are fixedly connected to the outer sides of the T-shaped blocks, and sliding rings are fixedly connected to the outer sides of the sliding columns. According to the utility model, after the mounting plate is fastened on the ceiling through the screws, the two T-shaped blocks can be pushed at the same time to enable the clamping block to contract, so that the clamping state of the clamping block is released, the alarm body can be easily disassembled, the surrounding air is accelerated to flow under the drawing of the small exhaust fan, and the smoke detection range is further accelerated; smoke finding is accelerated, and alarming is carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke alarms, in particular to a smoke detection and alarm device. Background Art

[0002] Fire sources are usually accompanied by the generation of smoke. Therefore, when a fire occurs in a home, the smoke alarm will sound an alarm when it detects the appearance of smoke, reminding and helping people to take necessary escape measures and alarm as soon as possible, so as to discover the fire source and potential dangers early, provide precious time to take measures, and protect the lives and property safety of family members. Existing smoke alarms are usually directly adhered to the ceiling or fastened to the ceiling by bolts. The former is more convenient to install, but over time, the alarm will be at risk of falling. The latter is firmly installed, but when installing or disassembling to install a new battery, it is necessary to use other tools to assist, which is more troublesome. Therefore, the technology in the field proposes a smoke detection and alarm device to solve the above problems. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a smoke detection and alarm device, which aims to improve the problem that it is difficult to achieve both firmness and convenience during installation and disassembly of the smoke detection and alarm device.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smoke detection and alarm device, comprising an alarm body and a mounting plate, the top of the alarm body is fixedly connected with two connecting columns, one side of the inner wall of the connecting column is fixedly connected with a spring 1, the other end of the spring 1 is fixedly connected with a clamping block, the bottom of the mounting plate is provided with two sliding grooves, the inner side of the sliding groove is slidably connected with a T-shaped block, the outer side of the T-shaped block is fixedly connected with a sliding column, the outer side of the sliding column is fixedly connected with a sliding ring, the outer side of the sliding column is fixedly connected with a spring 2, the bottom of the mounting plate is provided with an annular groove, and the inner side of the annular groove is provided with two clamping holes.

[0005] Through the above technical solution, the connecting column is aligned with the annular groove and directly inserted. At this time, the inclined surface of the card block contacts the inner side of the annular groove and will be squeezed and contracted, and at the same time, the spring 1 will be in a compressed state. Then the alarm body is rotated, and when the card block slides to the position opposite to the card hole, the elastic force of the spring 1 will push the card block to quickly engage into the inside of the card hole, and the alarm body is installed.

[0006] Furthermore, an acceleration mechanism is installed at the bottom of the alarm body, the acceleration mechanism includes an exhaust assembly and a detection assembly, the exhaust assembly includes a small exhaust fan, and the small exhaust fan is fixedly connected to the bottom of the alarm body;

[0007] Through the above technical solution, starting the small exhaust fan can accelerate the flow of surrounding air, so that the smoke is quickly sucked into the bottom of the alarm body.

[0008] Further, the detection assembly includes an LED lamp and two L-shaped blocks, the LED lamp is installed on the inner side of the alarm body, one end of the two L-shaped blocks is fixedly connected to the inner side of the alarm body, and a photosensitive sensor is installed on the adjacent sides of the two L-shaped blocks;

[0009] Through the above technical solution, the LED lamp continuously emits infrared light, which cannot be sensed by the photosensitive sensor under normal conditions. When affected by smoke, the infrared light will be scattered and then captured and sensed by the photosensitive sensor.

[0010] Furthermore, the photosensor is located directly above the small exhaust fan;

[0011] Through the above technical solution, the position where the smoke enters just covers the photosensitive sensor, making it easier for the infrared light to be captured by the photosensitive sensor when it is scattered.

[0012] Furthermore, the outer side of the block is slidably connected to the inner wall of the connecting column;

[0013] Through the above technical solution, the clamping block can be retracted into the interior of the connecting column.

[0014] Furthermore, one end of the second spring is fixedly connected to the outer side of the sliding ring, and the other end of the second spring is fixedly connected to one side of the inner wall of the mounting plate;

[0015] Through the above technical solution, the elastic force of the second spring can quickly reset the sliding ring.

[0016] Furthermore, screw holes are provided at the four inner corners of the mounting plate, and the clamping block is clamped inside the clamping holes;

[0017] Through the above technical solution, the screw holes facilitate the screws to fix the mounting plate on the ceiling, and the clamping block is engaged with the inside of the clamping hole to complete the installation of the alarm body.

[0018] Furthermore, the outer side of the connecting column is slidably connected to the inner side of the annular groove;

[0019] Through the above technical solution, the rotation of the connecting column is made more stable.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, through the mutual cooperation of the alarm body, connecting column, spring 1, card block, mounting plate, slide groove, T-shaped block, sliding column, spring 2, card hole and other structures, after the mounting plate is fastened to the ceiling by screws, the two T-shaped blocks can be pushed at the same time to make the card block shrink, so as to release the card block engagement state, and the alarm body can be easily disassembled.

[0022] 2. In the utility model, through the mutual cooperation of the LED lamp, L-shaped block, photosensitive sensor, small exhaust fan and other structures, the surrounding air flow is accelerated under the pumping of the small exhaust fan, thereby accelerating the smoke detection range, realizing the accelerated detection of smoke and alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a smoke detection and alarm device proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the alarm body of a smoke detection and alarm device proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of a connecting column of a smoke detection and alarm device proposed by the utility model;

[0026] Figure 4 A partial cross-sectional view of a mounting plate of a smoke detection and alarm device proposed in the utility model;

[0027] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0028] Figure 6 The utility model provides an L-shaped block structure schematic diagram of a smoke detection and alarm device.

[0029] Legend:

[0030] 1. Alarm body; 2. Connecting column; 3. Spring 1; 4. Clamp block; 5. Mounting plate; 6. Slide groove; 7. T-shaped block; 8. Sliding column; 9. Sliding ring; 10. Spring 2; 11. Annular groove; 12. Clamp hole; 13. LED light; 14. L-shaped block; 15. Photosensitive sensor; 16. Small exhaust fan; 17. Screw hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-3 The utility model provides an embodiment: a smoke detection and alarm device, including an alarm body 1 and a mounting plate 5, the top of the alarm body 1 is fixedly connected with two connecting columns 2, one side of the inner wall of the connecting column 2 is fixedly connected with a spring 3, the other end of the spring 3 is fixedly connected with a block 4, and the bottom of the mounting plate 5 is provided with two slide grooves 6;

[0033] Reference Figure 4-5 A T-shaped block 7 is slidably connected to the inner side of the slide groove 6, a sliding column 8 is fixedly connected to the outer side of the T-shaped block 7, a sliding ring 9 is fixedly connected to the outer side of the sliding column 8, a spring 10 is sleeved on the outer side of the sliding column 8, an annular groove 11 is provided at the bottom of the mounting plate 5, and two clamping holes 12 are provided on the inner side of the annular groove 11.

[0034] Specifically, align the connecting column 2 with the annular groove 11 and insert it directly. At this time, the inclined surface of the block 4 contacts the inner side of the annular groove 11 and will be squeezed and contracted, and at the same time, the spring 13 will be in a compressed state. Then rotate the alarm body 1. When the block 4 slides to the position opposite to the hole 12, the elastic force of the spring 13 will push the block 4 to quickly engage into the inside of the hole 12. In this way, the alarm body 1 is installed.

[0035] Reference Figure 2 An acceleration mechanism is installed at the bottom of the alarm body 1, and the acceleration mechanism includes an exhaust component and a detection component. The exhaust component includes a small exhaust fan 16, and the small exhaust fan 16 is fixedly connected to the bottom of the alarm body 1. The detection component includes an LED lamp 13 and two L-shaped blocks 14. The LED lamp 13 is installed on the inner side of the alarm body 1, and one end of the two L-shaped blocks 14 is fixedly connected to the inner side of the alarm body 1. A photosensitive sensor 15 is installed on the adjacent sides of the two L-shaped blocks 14. The photosensitive sensor 15 is located directly above the small exhaust fan 16, and the alarm body 1 is electrically connected to the photosensitive sensor 15.

[0036] Specifically, starting the small exhaust fan 16 can accelerate the flow of surrounding air, so that the smoke is quickly sucked into the bottom of the alarm body 1, and the LED lamp 13 continues to emit infrared light. Under normal conditions, it cannot be sensed by the photosensitive sensor 15. When affected by smoke, the infrared light will be scattered and then captured and sensed by the photosensitive sensor 15. The position where the smoke enters just covers the photosensitive sensor 15, making it easier for the infrared light to be captured by the photosensitive sensor 15 when it is scattered.

[0037] Reference Figure 3 The outer side of the block 4 is slidably connected to the inner wall of the connecting column 2, so that the block 4 can be retracted into the interior of the connecting column 2.

[0038] Reference Figure 5 One end of the spring 10 is fixedly connected to the outer side of the sliding ring 9, and the other end of the spring 10 is fixedly connected to one side of the inner wall of the mounting plate 5. The elastic force of the spring 10 can quickly reset the sliding ring 9.

[0039] Reference Figure 1 Screw holes 17 are provided at the four corners of the mounting plate 5, and the clamping block 4 is clamped in the inside of the clamping hole 12. The screw hole 17 facilitates the screws to fix the mounting plate 5 to the ceiling, and the clamping block 4 is clamped into the inside of the clamping hole 12 to complete the installation of the alarm body 1.

[0040] Reference Figure 1 The outer side of the connecting column 2 is slidably connected to the inner side of the annular groove 11, so that the rotation of the connecting column 2 is more stable.

[0041] Working principle: First, the user can use screws to pass through the screw holes 17 to fix the mounting plate 5 on the ceiling to increase firmness, and then align the connecting column 2 with the annular groove 11 and insert it directly. At this time, the inclined surface of the block 4 contacts the inner side of the annular groove 11 and will be squeezed and contracted, and at the same time, the spring 13 will be in a compressed state. Then rotate the alarm body 1. When the block 4 slides to the position opposite to the card hole 12, the elastic force of the spring 13 will push the block 4 to quickly engage into the inside of the card hole 12. In this way, the alarm body 1 is installed. When the alarm body 1 needs to be disassembled, the user can push the T-shaped block 7 to move, thereby driving the sliding column 8 to move. The other end of the sliding column 8 will push the block 4 to contract, so that the alarm body 1 can be easily removed.

[0042] In addition, starting the small exhaust fan 16 can accelerate the flow of surrounding air, so that the smoke is quickly sucked into the bottom of the alarm body 1. At the same time, the LED light 13 continues to emit infrared light. Under normal conditions, it cannot be sensed by the photosensitive sensor 15. When affected by smoke, the infrared light will be scattered and then captured and sensed by the photosensitive sensor 15, and then the signal will be transmitted to the inside of the alarm body 1 to alarm, which can speed up the speed at which the alarm body 1 senses smoke.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A smoke detection and alarm device, comprising an alarm body (1) and a mounting plate (5), characterized in that: The top of the alarm body (1) is fixedly connected to two connecting columns (2), one side of the inner wall of the connecting column (2) is fixedly connected to a spring 1 (3), the other end of the spring 1 (3) is fixedly connected to a clamping block (4), the bottom of the mounting plate (5) is provided with two sliding grooves (6), the inner side of the sliding groove (6) is slidably connected to a T-shaped block (7), the outer side of the T-shaped block (7) is fixedly connected to a sliding column (8), the outer side of the sliding column (8) is fixedly connected to a sliding ring (9), the outer side of the sliding column (8) is fixedly connected to a spring 2 (10), the bottom of the mounting plate (5) is provided with an annular groove (11), the inner side of the annular groove (11) is provided with two clamping holes (12).

2. A smoke detection and alarm device according to claim 1, characterized in that: An acceleration mechanism is installed at the bottom of the alarm body (1), the acceleration mechanism comprising an exhaust assembly and a detection assembly, the exhaust assembly comprising a small exhaust fan (16), and the small exhaust fan (16) is fixedly connected to the bottom of the alarm body (1).

3. A smoke detection and alarm device according to claim 2, characterized in that: The detection assembly comprises an LED lamp (13) and two L-shaped blocks (14); the LED lamp (13) is mounted on the inner side of the alarm body (1); one end of the two L-shaped blocks (14) is fixedly connected to the inner side of the alarm body (1); and a photosensitive sensor (15) is mounted on adjacent sides of the two L-shaped blocks (14).

4. A smoke detection and alarm device according to claim 3, characterized in that: The photosensor (15) is located directly above the small exhaust fan (16).

5. A smoke detection and alarm device according to claim 1, characterized in that: The outer side of the clamping block (4) is slidably connected to the inner wall of the connecting column (2).

6. A smoke detection and alarm device according to claim 1, characterized in that: One end of the second spring (10) is fixedly connected to the outer side of the sliding ring (9), and the other end of the second spring (10) is fixedly connected to one side of the inner wall of the mounting plate (5).

7. A smoke detection and alarm device according to claim 1, characterized in that: Screw holes (17) are provided at the four inner corners of the mounting plate (5), and the clamping block (4) is clamped inside the clamping holes (12).

8. A smoke detection and alarm device according to claim 1, characterized in that: The outer side of the connecting column (2) is slidably connected to the inner side of the annular groove (11).

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