CN218866576U

CN218866576U - Alarm device

Info

Publication number: CN218866576U
Application number: CN202222801596.8U
Authority: CN
Inventors: 向正
Original assignee: Shenzhen Ruofengyun Technology Co ltd
Current assignee: Shenzhen Ruofengyun Technology Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-04-14
Anticipated expiration: 2032-10-24

Abstract

The embodiment of the utility model discloses alarm, including PCB mainboard and photoelectric sensor and sealing washer, be connected with on the PCB mainboard photoelectric sensor, and be provided with the sealing washer around the junction of the two. The utility model discloses an alarm prevents in smog gets into the gap between photoelectric sensor and the PCB mainboard through being provided with the sealing washer, prevents that smog concentration reduces to let photoelectric sensor respond more sensitively.

Description

Alarm device

Technical Field

The utility model relates to an alarm device technical field especially relates to an alarm device by smog effect appears.

Background

The working principle of the independent photoelectric smoke-sensing alarm is that a photosensitive electrode in a photoelectric sensor generates an electric signal under the irradiation of laser, when fire smoke shields the laser, the electrode loses power and sends an alarm signal, and the independent photoelectric smoke-sensing alarm is used in indoor places of various buildings.

The existing independent photoelectric smoke sensing alarm is usually arranged on the top surface of a wall, a gap can be generated at the joint of a photoelectric sensor and a PCB mainboard, when smoke drifts into the alarm, partial smoke drifts into the gap, the concentration of the smoke is reduced, the response of the photoelectric sensor is slower, and the response can not be timely made.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an alarm, it can prevent smog from wafing into the gap department between photoelectric sensor and the PCB mainboard, makes photoelectric sensor respond more sensitively.

The alarm comprises a PCB main board, a photoelectric sensor and a sealing ring, wherein the photoelectric sensor is connected to the PCB main board, and the sealing ring is arranged around the joint of the PCB main board and the photoelectric sensor.

Further, the sealing ring is arranged outwards along the bottom edge of the photoelectric sensor, and the sealing ring is arranged on the corresponding surface of the PCB mainboard towards the surface of the PCB mainboard in a sealing mode.

Furthermore, the sealing ring is made of rubber.

The PCB is characterized by further comprising an upper shell and a lower shell, wherein the lower shell is connected with the upper shell in a buckling mode, the PCB main board and the photoelectric sensor are sequentially arranged between the upper shell and the lower shell, and the photoelectric sensor is electrically connected with the PCB main board.

The sliding connection piece is rotatably and slidably connected in the sliding connection hole, and the sliding connection piece is arranged on one side, opposite to the fixed bottom plate, of the lower shell.

The photoelectric sensor is electrically connected with the photoelectric sensor, the buzzer is provided with a sound outlet hole matched with the photoelectric sensor, and the sound outlet hole is formed in the outer side wall of the upper shell.

Furthermore, the lateral wall of the upper shell is provided with a protruding part, the protruding part is matched with the photoelectric sensor, and the lateral wall of the protruding part is provided with a plurality of smoke inlets penetrating through the lateral wall.

The outer side wall of the periphery of the boss is provided with a plurality of flow guide grooves, the flow guide grooves are distributed around the boss, one end of each flow guide groove is close to the joint of the boss and the upper shell, and the other end of each flow guide groove is close to the edge of the outer side wall of the upper shell.

The photoelectric sensor is electrically connected with the photoelectric sensor, and the button is electrically connected with the buzzer.

The power supply is provided with a power supply groove which is matched with the power supply, the power supply groove is formed in one side of the lower shell, and the opening of the power supply groove faces the fixed bottom plate.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

the utility model discloses an alarm prevents in smog gets into the gap between photoelectric sensor and the PCB mainboard through being provided with the sealing washer, prevents that smog concentration reduces to let photoelectric sensor respond more sensitively.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an exploded view of an alarm in one embodiment;

FIG. 2 is a top view of the internal structure of the alarm in one embodiment;

FIG. 3 is a top view of an alarm in one embodiment;

FIG. 4 is a bottom view of the alarm in one embodiment;

fig. 5 is a front view of an alarm in one embodiment.

Reference numerals are as follows: 1. an alarm; 10. a PCB main board; 20. a photosensor; 30. a seal ring; 40. an upper housing; 50. a lower housing; 60. fixing the bottom plate; 70. a buzzer; 80. an indicator light; 90. a power source;

41. a button; 42. a sound outlet hole; 43. a boss portion; 431. a smoke inlet; 44. a light-transmitting hole; 45. a flow guide groove; 46. a through hole;

51. a sliding connection piece; 52. a power supply groove;

61. sliding connection holes; 62. bolt holes.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

Referring to fig. 1-5, an alarm 1 includes a PCB main board 10, a photoelectric sensor 20, and a sealing ring 30, wherein the photoelectric sensor 20 is connected to the PCB main board 10, and the sealing ring 30 is disposed around a connection position of the two. The sealing ring 30 prevents smoke from entering the gap between the PCB main board 10 and the photo sensor 20, enabling the photo sensor 20 to react more sensitively. The alarm 1 is one of independent photoelectric smoke-sensing fire detection alarms.

In this embodiment, the sealing ring 30 is disposed along the bottom edge of the photoelectric sensor 20, and the sealing ring 30 is disposed on the corresponding surface of the PCB main board 10 facing the surface of the PCB main board 10 in a sealing manner. The seal ring 30 blocks a gap between the PCB main board 10 and the photo sensor 20.

In this embodiment, the sealing ring 30 is made of rubber. The rubber seal ring 30 has high anti-extrusion capability and long service life.

In this embodiment, the portable electronic device further includes an upper housing 40 and a lower housing 50, the lower housing 50 is connected to the upper housing 40 in a snap-fit manner, the PCB main board 10 and the photoelectric sensor 20 are sequentially disposed between the upper housing 40 and the lower housing 50, and the photoelectric sensor 20 is electrically connected to the PCB main board 10. The photoelectric sensor 20 is arranged in the upper shell 40, so that smoke can be gathered conveniently, and the photoelectric sensor 20 can make a quick response.

In this embodiment, the portable electronic device further includes a plurality of fixed base plates 60, a bolt hole 61 and a sliding connection hole 62 penetrating through the fixed base plates 60 are formed on one side of each fixed base plate 60 facing the lower housing 50, a sliding connection member 51 is rotatably and slidably connected in the sliding connection hole 62, and the sliding connection member 51 is disposed on one side of the lower housing 50 opposite to the fixed base plates 60. 2 fixed bottom plates 60 can form an X shape or a ten shape, and are fixed on the roof through expansion bolts, then the sliding connection piece 51 of the lower shell 50 is in sliding connection with the sliding connection hole 61 of the outermost fixed bottom plate 60 in a rotating mode, 2 fixed bottom plates 60 hang the alarm 1 on the roof, and 1 fixed bottom plate 60 can not bear the weight of the alarm 1 and can fall off.

In this embodiment, a buzzer 70 is further included, the buzzer 70 is electrically connected to the photoelectric sensor 20, the buzzer 70 has a matching sound outlet 42, and the sound outlet 42 is opened on the outer side wall of the upper casing 40. When the photoelectric sensor 20 reacts to the smoke concentration, the signal is transmitted to the buzzer 70, so that the buzzer 70 sounds through the sound outlet hole 42 to inform nearby people of a fire, and the people pay attention to safety.

In this embodiment, a protruding portion 43 is disposed on an outer side wall of the upper housing 40, the protruding portion 43 is adapted to the photoelectric sensor 20, and a plurality of smoke inlets 431 penetrating through the outer side wall are disposed on the outer side wall of the protruding portion 43. The smoke inlet 431 facilitates the flow of smoke into the alarm 1 to allow the photoelectric sensor 20 therein to respond quickly.

In this embodiment, the air conditioner further includes a plurality of air guide grooves 45, the air guide grooves 45 are disposed on the outer side wall of the periphery of the protruding portion 43, the air guide grooves 45 are distributed around the protruding portion 43, one end of each air guide groove 45 is close to the connection portion of the protruding portion 43 and the upper housing 40, and the other end of each air guide groove 45 is close to the edge of the outer side wall of the upper housing 40. The flow guide groove 45 facilitates the smoke to enter the smoke inlet 431.

In this embodiment, the electronic device further includes a button 41, the button 41 has a through hole 46, the through hole 46 is formed in an outer side wall of the upper housing 40, the button 41 is electrically connected to the photoelectric sensor 20, and the button 41 is electrically connected to the buzzer 70. The button 41 can test whether the alarm 1 is abnormal or not, and ensure that the alarm can work under the condition that a circuit is normal; when the alarm 1 is in an alarm state, the buzzer 70 can stop sounding by pressing the button 41.

In this embodiment, a power supply 90 is further included, and the power supply 90 has a power supply recess 52 adapted thereto, the power supply recess 52 is opened at one side of the lower housing 50, and the power supply recess 52 is opened toward the fixed base plate 60. The power supply 90 is a nickel-metal hydride 7 battery, which is replaceable. The power supply 90 supplies power for the operation of the photoelectric sensor 20, the buzzer 70, and the indicator lamp 80.

In this embodiment, the electronic device further includes an indicator light 80, the indicator light 80 is electrically connected to the photoelectric sensor 20, the indicator light 80 has a corresponding light-transmitting hole 44, and the light-transmitting hole 44 is disposed on an outer side wall of the upper housing 40. Different states of the alarm 1 can be reflected by flashing the indicator light 80 at different times, including but not limited to alarm states where the indicator light 80 flashes and sounds once per second.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. The alarm comprises a PCB (printed circuit board) main board (10) and a photoelectric sensor (20), and is characterized by further comprising a sealing ring (30), wherein the photoelectric sensor (20) is connected to the PCB main board (10), and the sealing ring (30) is arranged around the joint of the PCB main board and the photoelectric sensor.

2. The alarm device according to claim 1, characterised in that the sealing ring (30) is arranged along the bottom edge of the photoelectric sensor (20) outwards, and the sealing ring (30) is arranged on the corresponding surface of the PCB main board (10) facing the surface of the PCB main board (10) in a sealing manner.

3. An alarm unit according to claim 1, characterised in that the sealing ring (30) is made of rubber.

4. The alarm device according to claim 1, further comprising an upper housing (40) and a lower housing (50), wherein the lower housing (50) is connected with the upper housing (40) in a snap-fit manner, the PCB main board (10) and the photoelectric sensor (20) are sequentially arranged between the upper housing (40) and the lower housing (50), and the photoelectric sensor (20) is electrically connected with the PCB main board (10).

5. The alarm device according to claim 4, further comprising a plurality of fixing base plates (60), wherein each fixing base plate (60) is provided with a bolt hole (61) and a sliding connection hole (62) penetrating through the fixing base plate (60), a sliding connection piece (51) is rotatably and slidably connected in the sliding connection hole (62), and the sliding connection piece (51) is arranged on one side of the lower shell (50) opposite to the fixing base plate (60).

6. The alarm of claim 4, further comprising a buzzer (70), wherein the buzzer (70) is electrically connected to the photoelectric sensor (20), and wherein the buzzer (70) has a matching sound outlet (42), and the sound outlet (42) is opened on the outer side wall of the upper housing (40).

7. The alarm apparatus according to claim 4, wherein the outer side wall of the upper housing (40) is provided with a convex portion (43), the convex portion (43) is adapted to the photoelectric sensor (20), and the outer side wall of the convex portion (43) is provided with a plurality of smoke inlets (431) penetrating through the outer side wall.

8. The alarm device according to claim 7, further comprising a plurality of flow guiding grooves (45), wherein the flow guiding grooves (45) are formed in the outer side wall around the protruding portion (43), the flow guiding grooves (45) are distributed around the protruding portion (43), one end of each flow guiding groove (45) is close to the joint of the protruding portion (43) and the upper shell (40), and the other end of each flow guiding groove (45) is close to the edge of the outer side wall of the upper shell (40).

9. The alarm of claim 6, further comprising a button (41), wherein the button (41) has a through hole (46), the through hole (46) is formed in an outer side wall of the upper housing (40), the button (41) is electrically connected to the photoelectric sensor (20), and the button (41) is electrically connected to the buzzer (70).

10. The alarm of claim 5, further comprising a power source (90), wherein the power source (90) has a matching power recess (52), the power recess (52) opens at one side of the lower housing (50), the power recess (52) opening toward the fixed base plate (60).