CN111815894A

CN111815894A - Smoke alarm

Info

Publication number: CN111815894A
Application number: CN202010745102.1A
Authority: CN
Inventors: 刘允彪
Original assignee: Suzhou Primetech Electronics Co ltd
Current assignee: Suzhou Primetech Electronics Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2020-10-23

Abstract

The invention discloses a smoke alarm which comprises a mounting seat, a base and a shell, wherein the base is connected to the mounting seat, the shell is connected to the base, a locking mechanism corresponding to a rotating mechanism is arranged between a cover body and the shell, the cover body enables the locking mechanism to control the cover body to be separated from the shell or fixed with the shell through rotation in the horizontal direction, the rotating mechanism rotates in the horizontal direction of the base, a circuit board is arranged on the upper surface of the base, a reset button is arranged on the circuit board, and a trigger column corresponding to the reset button is arranged at the top of the cover body. The cover body is rotated synchronously, the locking mechanism controls the cover body to be separated from the locking, the elastic telescopic mechanism separates the cover body from the shell, the size of a flue is enlarged, and meanwhile, most of the smoke sensor is exposed in the air, so that the response speed of the smoke sensor is improved.

Description

Smoke alarm

Technical Field

The invention relates to an alarm, in particular to a smoke alarm.

Background

The smoke alarm is an important part in the security field, and is more and more valued by people, the smoke alarm is actually a separate name of a smoke sensor or a smoke alarm, the smoke alarm realizes fire prevention by monitoring the concentration of smoke, an ion type smoke sensor is adopted inside, the ion type smoke sensor is a sensor with advanced technology and reliable working stability, and is widely applied to various fire alarm systems, and the performance of the smoke alarm is far superior to that of a gas-sensitive resistor type fire alarm.

Among the prior art, the utility model patent of the grant bulletin number "CN 202093644U" discloses a smoke alarm, in smoke alarm's use, is provided with the smog manhole to the side of smoke alarm's shell usually, and smog passes through behind the smog manhole, is detected by the sensor in the smoke alarm, and then bee calling organ sound production, has played the effect of warning, and smoke alarm's smog manhole undersize will lead to the entering amount of smog not enough, and then lead to the response of sensor relatively poor.

Disclosure of Invention

The invention aims to provide a smoke alarm, which enlarges the size of a flue of the smoke alarm so as to improve the response speed of a sensor.

The technical purpose of the invention is realized by the following technical scheme: a smoke alarm comprises a mounting seat, a base and a shell, wherein the base is connected to the mounting seat, the shell is connected to the base, a fixing hole is concentrically formed in the upper surface of the shell, a cover body is arranged in the fixing hole, a smoke sensor is arranged at the bottom of the cover body, the cover body rotates in the axial direction, lifting and horizontal direction of the fixing hole, an elastic telescopic mechanism and a rotating mechanism are arranged at the bottom of the cover body, one end of the elastic telescopic mechanism is connected to the bottom of the cover body, the other end of the elastic telescopic mechanism is connected to the rotating mechanism, the elastic telescopic mechanism comprises a spring, the spring drives the cover body to move away from the upper part of the shell, a locking mechanism corresponding to the rotating mechanism is arranged between the cover body and the shell, and the cover body enables the locking mechanism to control the cover body to be separated from, the rotary mechanism rotates in the horizontal direction of the base, a circuit board is arranged on the upper surface of the base, a reset button is arranged on the circuit board, and a trigger column corresponding to the reset button is arranged at the top of the cover body.

Preferably, the elastic telescopic mechanism comprises a telescopic pipe and a telescopic column, the telescopic column is connected in the telescopic pipe in a sliding mode, the spring is arranged in the telescopic pipe, one end of the spring is abutted to one end of the telescopic pipe, the other end of the spring is abutted to the top of the telescopic column, and the bottom of the telescopic column is connected to the rotating mechanism.

Preferably, the opening of the telescopic pipe is provided with a limiting hole, and the end part of the telescopic column is provided with a limiting ring matched with the limiting hole.

By adopting the technical scheme, the telescopic column and the telescopic pipe are mutually limited, and then the cover body is limited to be separated.

Preferably, the rotating mechanism comprises a sliding seat, a sliding groove and a sliding block, the sliding seat is arranged on the base, the sliding groove is arranged in the sliding seat, the sliding block is connected to the sliding groove in a sliding mode, and the bottom of the telescopic column is connected with the sliding block.

Through adopting above-mentioned technical scheme, when the lid takes place to rotate, the sliding block of bottom takes place to rotate in the sliding tray, and flexible post and flexible pipe also take place to rotate in step promptly.

Preferably, the circuit board is provided with a groove for the sliding seat to avoid.

By adopting the technical scheme, the circuit board space occupied by the sliding seat is reduced, and the structure of the whole smoke alarm is more compact.

Preferably, the cross section of the sliding seat is semicircular.

Through adopting above-mentioned technical scheme, with rotatory lid cooperation.

Preferably, the telescopic pipes are provided with five in the horizontal direction.

By adopting the technical scheme, the structural strength is improved, the space between the adjacent telescopic pipes is the flue through which smoke enters, and the effect of enlarging the size of the flue entering of the smoke alarm is also achieved.

Preferably, the locking mechanism comprises a limiting block arranged on the side face of the cover body, and a through hole matched with the limiting block is formed in the side wall of the fixing hole.

Through adopting above-mentioned technical scheme, stopper accessible through-hole, and then flexible pipe completion is flexible.

Preferably, the cross section of the limiting block is semicircular.

In conclusion, the cover body is rotated, the rotating mechanism synchronously rotates, the locking mechanism controls the cover body to be unlocked, the elastic telescopic mechanism separates the cover body from the shell, the size of a flue is enlarged, and meanwhile, most of the smoke sensor is exposed in the air, so that the response speed of the smoke sensor is improved; meanwhile, when the smoke alarm gives an alarm, the elastic telescopic mechanism is controlled to stretch by pressing the cover body, so that the trigger column is in contact with the reset button, and reset is realized.

Drawings

FIG. 1 is a schematic structural view of an embodiment;

FIG. 2 is a schematic sectional view of the embodiment;

FIG. 3 is a schematic cross-sectional view of the embodiment in a state where the lid body is detached;

FIG. 4 is a schematic cross-sectional view of the embodiment in a base position;

in the figure, 1, a mounting seat; 2. a base; 3. a housing; 4. a fixing hole; 5. a cover body; 6. a smoke sensor; 7. a circuit board; 8. a reset button; 9. a trigger post; 10. a telescopic pipe; 11. a telescopic column; 12. a limiting hole; 13. a limiting ring; 14. a sliding seat; 15. a sliding groove; 16. a slider; 17. an avoidance groove; 18. a limiting block; 19. and a through hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example (b):

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, a smoke alarm includes a mounting base 1, a base 2 and a housing 3, the base 2 is connected to the mounting base 1, the mounting base 1 is fixed to a ceiling, the housing 3 is connected to the base 2, a fixing hole 4 is concentrically formed in the upper surface of the housing 3, a cover 5 is disposed in the fixing hole 4, a smoke sensor 6 is disposed at the bottom of the cover 5, the cover 5 is axially lifted and horizontally rotated in the fixing hole 4, an elastic telescopic mechanism and a rotating mechanism are disposed at the bottom of the cover 5, one end of the elastic telescopic mechanism is connected to the bottom of the cover 5, the other end of the elastic telescopic mechanism is connected to the rotating mechanism, the elastic telescopic mechanism includes a spring, the spring drives the cover 5 to move away from the upper portion of the housing 3, a locking mechanism corresponding to the rotating mechanism is disposed between the cover 5 and the housing 3, and the cover 5 makes the locking mechanism control the cover 3 are fixed, and rotary mechanism rotates at the horizontal direction of base 2, and the upper surface of base 2 is provided with circuit board 7, is provided with reset button 8 on the circuit board 7, and the top of lid 5 is provided with the trigger post 9 that corresponds with reset button 8.

As shown in fig. 2 and fig. 3, the elastic expansion mechanism includes an expansion pipe 10 and an expansion column 11, the expansion column 11 is connected in the expansion pipe 10 in a sliding manner, the spring is provided in the expansion pipe 10, one end of the spring is abutted to one end of the expansion pipe 10, the other end of the spring is abutted to the top of the expansion column 11, the bottom of the expansion column 11 is connected to the rotating mechanism, the opening of the expansion pipe 10 is provided with a limit hole 12, and the end of the expansion column 11 is provided with a limit ring 13 matched with the limit hole 12.

As shown in fig. 3 and 4, the rotating mechanism includes a sliding seat 14, a sliding groove 15 and a sliding block 16, the sliding seat 14 is disposed on the base 2, the sliding groove 15 is disposed in the sliding seat 14, the sliding block 16 is slidably connected to the sliding groove, the bottom of the telescopic column 11 is connected to the sliding block 16, an avoiding groove 17 is disposed on the circuit board 7 for the sliding seat 14 to be disposed, the cross section of the sliding seat 14 is semicircular, and five telescopic tubes 10 are disposed in the horizontal direction.

Meanwhile, in order to prevent the cover body 5 from being separated, as shown in fig. 1 and fig. 2, the locking mechanism includes a limiting block 18 disposed on the side surface of the cover body 5, a through hole 19 matched with the limiting block 18 is disposed on the side wall of the fixing hole 4, the cross section of the through hole 19 is semicircular, and three through holes 19 and three limiting blocks 18 are correspondingly disposed.

The working principle is as follows:

the cover body 5 is rotated, the sliding block 16 synchronously rotates in the sliding groove 15, the limiting block 18 controls the cover body 5 to be unlocked through the through hole 19, namely, the locking mechanism controls the cover body 5 to be unlocked, the spring drives the telescopic column 11 and the telescopic pipe 10 to move back and forth, so that the cover body 5 is separated from the shell body 3, the size of a flue is enlarged, meanwhile, most of the smoke sensor 6 is exposed in the air, and the response speed of the smoke sensor 6 is improved; meanwhile, when the smoke alarm gives an alarm, the telescopic column 11 moves in the telescopic pipe 10 by pressing the cover body 5, the spring is controlled to be telescopic, the trigger column 9 is in contact with the reset button 8, and reset is achieved.

Claims

1. The utility model provides a smoke alarm, includes mount pad (1), base (2) and casing (3), base (2) are connected on mount pad (1), casing (3) are connected on base (2), its characterized in that: the upper surface of the shell (3) is concentrically provided with a fixed hole (4), a cover body (5) is arranged in the fixed hole (4), the bottom of the cover body (5) is provided with a smoke sensor (6), the cover body (5) is axially lifted and horizontally rotated in the fixed hole (4), the bottom of the cover body (5) is provided with an elastic telescopic mechanism and a rotating mechanism, one end of the elastic telescopic mechanism is connected to the bottom of the cover body (5), the other end of the elastic telescopic mechanism is connected to the rotating mechanism, the elastic telescopic mechanism comprises a spring, the spring drives the cover body (5) to move above the shell (3) in a way of being far away from the shell, a locking mechanism corresponding to the rotating mechanism is arranged between the cover body (5) and the shell (3), and the cover body (5) enables the locking mechanism to control the cover body (5) to be separated from the shell (3) or the cover body (5) to be fixed with the, the rotary mechanism rotates in the horizontal direction of the base (2), a circuit board (7) is arranged on the upper surface of the base (2), a reset button (8) is arranged on the circuit board (7), and a trigger column (9) corresponding to the reset button (8) is arranged at the top of the cover body (5).

2. A smoke alarm according to claim 1 wherein: the elastic telescopic mechanism comprises a telescopic pipe (10) and a telescopic column (11), the telescopic column (11) is connected in the telescopic pipe (10) in a sliding mode, the spring is arranged in the telescopic pipe (10), one end of the spring is abutted to one end of the telescopic pipe (10), the other end of the spring is abutted to the top of the telescopic column (11), and the bottom of the telescopic column (11) is connected to the rotating mechanism.

3. A smoke alarm according to claim 2 wherein: the opening of the telescopic pipe (10) is provided with a limiting hole (12), and the end part of the telescopic column (11) is provided with a limiting ring (13) matched with the limiting hole (12).

4. A smoke alarm according to claim 2 wherein: the rotating mechanism comprises a sliding seat (14), a sliding groove (15) and a sliding block (16), the sliding seat (14) is arranged on the base (2), the sliding groove (15) is arranged in the sliding seat (14), the sliding block (16) is connected to the sliding groove in a sliding mode, and the bottom of the telescopic column (11) is connected with the sliding block (16).

5. The smoke alarm of claim 4, wherein: the circuit board (7) is provided with a dodging groove (17) for the sliding seat (14).

6. The smoke alarm of claim 4, wherein: the cross section of the sliding seat (14) is semicircular.

7. The smoke alarm of claim 6, wherein: the telescopic pipes (10) are provided with five in the horizontal direction.

8. The smoke alarm of claim 4, wherein: the locking mechanism comprises a limiting block (18) arranged on the side face of the cover body (5), and a through hole (19) matched with the limiting block (18) is formed in the side wall of the fixing hole (4).

9. The smoke alarm of claim 8, wherein: the cross section of the limiting block (18) is semicircular.