Smoke detector with uniform pressing force

Abstract

The utility model relates to the related technical field of smoke sensors, in particular to a smoke sensor with uniform pressing force. The smoke detector with uniform pressing force comprises a top cover, a buzzer, a circuit board, a photoelectric smoke sensor, a bottom cover, a pressing block and the like, the buzzer is mounted on the right side of the top in the top cover, the circuit board is connected in the top cover, the photoelectric smoke sensor is mounted at the bottom of the circuit board, and the bottom cover is clamped at the bottom of the top cover. A pressing block is slidably clamped in the middle of the bottom of the bottom cover. The two limiting rods are arranged diagonally, and the pressing block is of a square structure, so that when the pressing block is pressed at different positions, the pressing block can be smoothly pressed in place, uniform stress of the pressing block is guaranteed, the situation that operation is affected due to the fact that pressing is not in place is avoided, and using is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to smoke detectors, and in particular to a smoke detector with uniform pressing force. Background Art

[0002] A smoke detector is an electronic device used to monitor fire smoke. Its main function is to detect fire and sound an alarm, reminding people to flee the scene quickly in time to protect people's lives and property safety. Photoelectric smoke detectors detect smoke by sensing the scattering and absorption of light by smoke particles. When smoke passes through a photoelectric smoke detector, the tiny particles in the smoke will scatter and absorb light, causing the degree of light scattering and absorption in the detector to change. When the smoke concentration reaches a certain level, the detector will trigger an alarm.

[0003] When the danger is eliminated and the smoke detector needs to be turned off, a button needs to be pressed to complete the task. Traditional smoke detector buttons are generally set at the bottom, and the button size of most smoke detectors is set to be small, making it difficult to find the right position when pressing. In addition, when pressing, if the pressed position is not in the center and is offset, the button may not be pressed in place, making it difficult to turn off the smoke detector, affecting operation, and requiring repeated confirmation of the pressing position, which is not conducive to use. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the technical problem of the utility model is to provide a smoke detector with uniform pressing force.

[0005] Technical solution: A smoke detector with uniform pressing force, including a top cover, a controller, a buzzer, a circuit board, a photoelectric smoke sensor, a bottom cover, a pressing block, a limit rod, a pressing rod, a pressing switch and an elastic paddle. A buzzer is installed on the right side of the top inside the top cover, a circuit board is connected inside the top cover, a controller is connected to the right side of the circuit board, a photoelectric smoke sensor is installed on the bottom of the circuit board, the bottom of the top cover is clamped with the bottom cover, a pressing block is slidably clamped with the middle of the bottom of the bottom cover, both sides of the top of the pressing block are connected with limit rods, the two limit rods are arranged at opposite oblique angles, limit holes are provided at the bottom of the bottom cover near the two limit rods, the limit rod is slidably connected to the limit hole, two elastic paddles are connected in the middle of the bottom of the bottom cover, the pressing block is in contact with the elastic paddle, a pressing rod is connected in the middle of the top of the pressing block, a pressing switch is installed on the bottom of the circuit board, the pressing rod passes through the bottom cover and is in contact with the press switch, and the buzzer, the photoelectric smoke sensor and the press switch are all electrically connected to the controller.

[0006] In one embodiment, the pressing block is square in shape to increase the area.

[0007] In one embodiment, smoke inlets are evenly arranged on the front side of the bottom of the bottom cover.

[0008] In one embodiment, the smoke sensor further includes a buckle a, the top of the photoelectric smoke sensor is symmetrically connected with the buckle a, the circuit board is symmetrically provided with buckle holes, and the buckles a are respectively connected with the buckle holes.

[0009] In one embodiment, the smoke detector further includes a buckle b, the inner side of the top cover is evenly connected with the buckle b along the circumferential direction, the inner side of the bottom cover is evenly provided with a slot along the circumferential direction, and the buckle b is engaged with the slot.

[0010] In one embodiment, the smoke detector further includes a limiting block, the top of the pressing block is symmetrically connected to the limiting blocks, and limiting grooves are provided on the bottom cover near the two limiting blocks, and the limiting blocks are snap-fitted with the limiting grooves.

[0011] In one embodiment, the buckle a, the limit block, and the buckle b are all made of plastic material with a certain degree of flexibility.

[0012] The utility model has the following advantages: 1. The two limit rods are arranged diagonally, and the pressing block has a square structure. When the pressing block is pressed at different positions, it can be pressed into place smoothly, ensuring that the pressing block is evenly stressed, avoiding the influence of operation due to inadequate pressing, and being more convenient in use;

[0013] 2. The bottom cover is fixed to the top cover by the cooperation of the buckle b and the slot, and the pressing block is fixed by the cooperation of the limit block and the limit slot. The photoelectric smoke sensor is fixed by the cooperation of the buckle a and the card hole. When maintaining the device, it is convenient to disassemble the internal structure without using tools. It can be tightened and loosened by relying on the elasticity of the buckle a, the limit block and the buckle b. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a partial cross-sectional view of the utility model.

[0016] Figure 3 It is an overall exploded schematic diagram of the utility model.

[0017] Figure 4 The figure is a three-dimensional structural diagram of the photoelectric smoke sensor, the smoke inlet and the buckle a of the utility model.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the limit rod, the pressing rod, the elastic paddle and other components of the utility model.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the bottom cover, pressing block, smoke inlet and other components of the utility model.

[0020] Figure 7 It is a three-dimensional structural schematic diagram of the limit rod, the pressing rod, the pressing switch and other components of the utility model.

[0021] Figure 8 It is a schematic diagram of the exploded structure of the bottom cover and the pressing block of the utility model.

[0022] The names and serial numbers of the parts in the figure are: 1-top cover, 101-controller, 2-buzzer, 3-circuit board, 4-photoelectric smoke sensor, 401-smoke inlet, 5-clip a, 6-clip hole, 7-bottom cover, 8-pressing block, 9-limiting block, 10-limiting rod, 11-pressing rod, 12-pressing switch, 13-elastic paddle, 14-limiting slot, 15-limiting hole, 16-clip slot, 17-clip b. DETAILED DESCRIPTION

[0023] The following description is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention.

[0024] Embodiment: A smoke detector with uniform pressing force, such as Figure 1-Figure 8 As shown, it includes a top cover 1, a controller 101, a buzzer 2, a circuit board 3, a photoelectric smoke sensor 4, a bottom cover 7, a pressing block 8, a limit rod 10, a pressing rod 11, a pressing switch 12 and an elastic paddle 13. The buzzer 2 is installed on the top right side of the top cover 1, the circuit board 3 is connected to the top cover 1, the controller 101 is connected to the right side of the circuit board 3, the photoelectric smoke sensor 4 is installed on the bottom of the circuit board 3, and the smoke inlet 401 is evenly opened on the front side of the bottom of the bottom cover 7. The smoke enters the interior of the device through the smoke inlet 401 and contacts the photoelectric smoke sensor 4. The bottom of the top cover 1 is clamped with the bottom cover 7, and the middle of the bottom of the bottom cover 7 is slidably clamped with a pressing block 8. The pressing block 8 is square in shape to increase the surface. The pressing block 8 has a large area, which is convenient for pressing. Limit rods 10 are connected to the left and right sides of the top of the pressing block 8. The two limit rods 10 are arranged at opposite oblique angles. Limit holes 15 are provided at the bottom of the bottom cover 7 near the two limit rods 10. The limit rods 10 are slidably connected to the limit holes 15. Two elastic paddles 13 are connected in the middle of the bottom of the bottom cover 7. When the pressing block 8 is pressed, the elastic paddles 13 can be squeezed and deformed. A pressing rod 11 is connected in the middle of the top of the pressing block 8. A pressing switch 12 is installed at the bottom of the circuit board 3 just above the pressing rod 11. The pressing rod 11 penetrates the bottom cover 7 and contacts with the pressing switch 12. The buzzer 2, the photoelectric smoke sensor 4 and the pressing switch 12 are all electrically connected to the controller 101.

[0025] like Figure 2-5 and Figure 7-Figure 8As shown, the smoke sensor also includes a buckle a5, a limit block 9, and a buckle b17. The top of the photoelectric smoke sensor 4 is symmetrically connected to the buckle a5. The circuit board 3 is symmetrically provided with a clamping hole 6. The buckle a5 is respectively engaged with the clamping hole 6. The photoelectric smoke sensor 4 is fixed by the buckle a5 and the clamping hole 6. The photoelectric smoke sensor 4 is detachably arranged on the circuit board 3 for easy maintenance. The top of the pressing block 8 is symmetrically connected to the limit block 9. The bottom cover 7 is provided with a limit groove 14 near the two limit blocks 9. The limit blocks 9 is snap-fitted with the limiting groove 14, so that the limiting block 9 can be detachably connected to the bottom cover 7. Three buckles b17 are evenly connected to the inner side of the top cover 1 along the circumferential direction. Three slots 16 are evenly opened on the inner side of the bottom cover 7 along the circumferential direction. The buckles b17 are snap-fitted with the slots 16. The top cover 1 and the bottom cover 7 are snap-fitted and fixed by the buckles b17 and the slots 16. When disassembling, the top cover 1 and the bottom cover 7 can be directly separated. The buckles a5, the limiting block 9, and the buckles b17 are all made of plastic materials with a certain degree of flexibility, and can be disassembled without tools.

[0026] When using the device, install the device on the indoor ceiling and connect the device to a power source. When a large amount of smoke appears in the room, the smoke enters the device through the smoke inlet 401 and contacts the photoelectric smoke sensor 4. The photoelectric smoke sensor 4 can sense the scattering and absorption of light by smoke particles to detect smoke. When smoke passes through the photoelectric smoke sensor 4, the tiny particles in the smoke will scatter and absorb light, thereby changing the degree of light scattering and absorption in the detector. When the smoke concentration reaches a certain level, the detector will send a signal to the controller 101, which controls the buzzer 2 to sound an alarm, thereby reminding people. When the danger is eliminated and the buzzer 2 needs to be turned off, the pressing block 8 on the bottom cover 7 can be long pressed. Because the device is installed on the ceiling and the height is relatively high, a tool can be used to press the pressing block 8. The pressing block 8 is forced to move upward, driving the limit block 9, the limit rod 10, and the pressing rod 11 move upward, and the pressing block 8 moves upward to squeeze the elastic paddle 13, so that the elastic paddle 13 is deformed. The limit rod 10 and the limit block 9 play a guiding role. The two limit rods 10 are arranged diagonally to ensure that the pressing block 8 is evenly stressed. If the pressing block 8 is not pressed at the center position, the pressing block 8 can also be ensured to move smoothly to avoid the situation where the pressing is not in place. The upward movement of the pressing rod 11 will squeeze the pressing switch 12, so that the pressing switch 12 sends a signal to the controller 101. The controller 101 controls the buzzer 2 to turn off and emits a beeping sound. Then people release the pressing block 8, and the elastic paddle 13 will rebound and reset, driving the limit block 9, the limit rod 10 and the pressing rod 11 to move downward and reset, so as to complete the closing of the buzzer 2. When the device is used in daily life, if the internal electrical components of the device need to be repaired, the device can be disassembled, and the internal structure can also be disassembled according to the setting method.

[0027] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the utility model concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A smoke detector with uniform pressing force, characterized in that: The invention comprises a top cover (1), a controller (101), a buzzer (2), a circuit board (3), a photoelectric smoke sensor (4), a bottom cover (7), a pressing block (8), a limit rod (10), a pressing rod (11), a pressing switch (12) and an elastic paddle (13); a buzzer (2) is installed on the right side of the top of the top cover (1); a circuit board (3) is connected inside the top cover (1); the right side of the circuit board (3) is connected to the controller (101); a photoelectric smoke sensor (4) is installed on the bottom of the circuit board (3); the bottom of the top cover (1) is clamped with the bottom cover (7); a pressing block (8) is slidably clamped in the middle of the bottom of the bottom cover (7); both sides of the top of the pressing block (8) are connected to the limit rods ( 10), the two limit rods (10) are arranged at opposite oblique angles, the bottom of the bottom cover (7) is provided with limit holes (15) near the two limit rods (10), the limit rods (10) are slidably connected to the limit holes (15), the middle of the bottom of the bottom cover (7) is connected with two elastic paddles (13), the pressing block (8) is in contact with the elastic paddles (13), the middle of the top of the pressing block (8) is connected with a pressing rod (11), the bottom of the circuit board (3) is installed with a pressing switch (12), the pressing rod (11) passes through the bottom cover (7) and is in contact with the pressing switch (12), and the buzzer (2), the photoelectric smoke sensor (4) and the pressing switch (12) are all electrically connected to the controller (101).

2. A smoke detector with uniform pressing force according to claim 1, characterized in that: The pressing block (8) is arranged in a square shape to increase the area.

3. A smoke detector with uniform pressing force according to claim 2, characterized in that: Smoke inlets (401) are evenly arranged on the front side of the bottom of the bottom cover (7).

4. A smoke detector with uniform pressing force according to claim 3, characterized in that: The smoke sensor also includes a buckle a (5), the top of the photoelectric smoke sensor (4) is symmetrically connected to the buckle a (5), the circuit board (3) is symmetrically provided with a buckle hole (6), and the buckle a (5) is respectively buckled with the buckle hole (6).

5. A smoke detector with uniform pressing force according to claim 4, characterized in that: The smoke detector further comprises a buckle b (17), the inner side of the top cover (1) is evenly connected with the buckle b (17) along the circumferential direction, the inner side of the bottom cover (7) is evenly provided with a clamping groove (16) along the circumferential direction, and the buckle b (17) is clamped and matched with the clamping groove (16).

6. A smoke detector with uniform pressing force according to claim 5, characterized in that: The smoke detector further comprises a limiting block (9), the top of the pressing block (8) is symmetrically connected to the limiting block (9), and the bottom cover (7) is provided with limiting grooves (14) at positions close to the two limiting blocks (9), and the limiting blocks (9) are engaged with the limiting grooves (14).

7. A smoke detector with uniform pressing force according to claim 6, characterized in that: The buckle a (5), the limit block (9) and the buckle b (17) are all made of plastic material with a certain degree of flexibility.

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