Smoke alarm convenient to disassemble and assemble

Abstract

The utility model discloses a smoke alarm convenient to disassemble and assemble, and relates to the technical field of smoke alarms. A middle frame is arranged in the center of the shell beam, a front shell and a rear shell are arranged at the front end and the rear end of the shell beam respectively, a hanging plate is arranged at the rear end of the rear shell, a circuit board is arranged in the middle frame, a front positioning column is arranged at the rear end of the front shell, the front positioning column is arranged in a through hole, and the through hole is formed in the circuit board. The rear positioning column is arranged at the front end of the rear shell, a positioning bolt is arranged in the rear positioning column, an ion detector is arranged at the upper right corner of the front surface of the circuit board, and the outer end of the ion detector is arranged on the front shell. And the device is convenient to disassemble and assemble during maintenance.

Description

Technical Field

[0001] The present application relates to the field of smoke alarms, and in particular to a smoke alarm that is easy to assemble and disassemble. Background Art

[0002] Smoke alarm is actually another name for smoke sensor or smoke alarm. This smoke sensor is the first to obtain the latest 3C certification for household detectors and is recommended by fire brigades in various places. It is easy to install and has significant effects. It has been widely used in important fire prevention places such as homes, factories, office buildings, hospitals, schools, and museums. The sensor of the ion alarm contains radioactive substances that can generate current. When smoke particles in the smoke enter the sensor, the current will be disrupted, causing the alarm to sound. The photoelectric alarm will emit an infrared beam. When there are smoke particles in the room, the beam will scatter onto the sensor. After the sensor senses a certain beam, it will sound an alarm.

[0003] In the prior art, most of the current smoke alarms are integrally formed or have a complex fixed structure. However, the current smoke alarms are inconvenient to disassemble and assemble during maintenance. Utility Model Content

[0004] The purpose of this application is to solve the problem x in the above background, and to provide a smoke alarm that is easy to disassemble and assemble.

[0005] In order to achieve the above-mentioned purpose, the present application specifically adopts the following technical solutions: a smoke alarm that is easy to disassemble and assemble, comprising a shell beam, characterized in that a middle frame is arranged in the center of the shell beam, a front shell and a rear shell are arranged at the front and rear ends of the shell beam respectively, a hanging plate is arranged at the rear end of the rear shell, and a circuit board is arranged in the middle frame;

[0006] A front positioning column is disposed at the rear end of the front shell, the front positioning column is disposed in a through hole, the through hole is disposed on the circuit board, a rear positioning column is disposed at the outer end of the front positioning column, the rear positioning column is disposed at the front end of the rear shell, and a positioning bolt is disposed in the rear positioning column;

[0007] A switch button and a reset button are respectively arranged on the left and right sides of the upper end of the middle frame, a light guide grid and a power interface are respectively arranged on the upper and lower sides of the right end of the middle frame, the inner sides of the switch button and the reset button are respectively arranged on the outer ends of the switch seat and the reset seat, the switch seat, the reset seat, the light guide grid and the power interface are arranged on the circuit board, an ion detector is arranged at the upper right corner of the front side of the circuit board, the outer end of the ion detector is arranged on the front shell, the switch seat, the reset seat, the light guide grid, the power interface and the ion detector are electrically connected to an external power supply and an external controller, and are controlled by the external controller.

[0008] Furthermore, a speaker opening is provided at the outer end of the middle frame, and a dustproof pad is provided in the speaker opening.

[0009] Furthermore, a fixing beam is arranged at the front end of the hanging plate, and the fixing beam is arranged at the front end of the rear shell.

[0010] Furthermore, a fixing frame is provided at the rear end of the hanging plate, and a hanging hole is provided on the fixing frame.

[0011] Furthermore, a buffer foam is provided at the connection between the circuit board and the front shell.

[0012] The beneficial effects of the present application are as follows: First, since the utility model is provided with a shell beam, a front shell, a middle frame, a rear shell, a front positioning column, a rear positioning column and positioning bolts, the utility model can be disassembled and assembled only by unscrewing or screwing on the positioning bolts, which is convenient for disassembly and assembly when the utility model is repaired; secondly, since the utility model is provided with a hanging plate, a fixing frame, a hanging hole and a fixing beam, the utility model can be fixedly installed in a suitable position. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall first-view structural diagram of this application;

[0014] Figure 2 This is the overall second-view structural diagram of this application;

[0015] Figure 3 It is the overall internal view of this application;

[0016] Figure 4 It is a cross-sectional view of the entire application;

[0017] Figure numerals: 1. shell beam; 2. front shell; 21. ion detector; 22. front positioning column; 3. middle frame; 31. speaker opening; 32. switch button; 33. reset button; 34. light guide grille; 35. power interface; 4. rear shell; 41. rear positioning column; 42. positioning bolt; 5. hanging plate; 51. fixing frame; 52. hanging hole; 53. fixing beam; 6. circuit board; 61. through hole; 62. switch seat; 63. reset seat. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0019] like Figure 1-Figure 4As shown, an embodiment of the present application provides a smoke alarm that is easy to disassemble and assemble, comprising a shell beam 1, characterized in that a middle frame 3 is provided in the center of the shell beam 1, a front shell 2 and a rear shell 4 are provided at the front and rear ends of the shell beam 1, a hanging plate 5 is provided at the rear end of the rear shell 4, and a circuit board 6 is provided in the middle frame 3;

[0020] A front positioning column 22 is disposed at the rear end of the front shell 2, and the front positioning column 22 is disposed in a through hole 61, and the through hole 61 is disposed on the circuit board 6. A rear positioning column 41 is disposed at the outer end of the front positioning column 22, and the rear positioning column 41 is disposed at the front end of the rear shell 4, and a positioning bolt 42 is disposed in the rear positioning column 41;

[0021] A switch button 32 and a reset button 33 are respectively arranged on the left and right sides of the upper end of the middle frame 3, and a light guide grid 34 and a power interface 35 are respectively arranged on the upper and lower sides of the right end of the middle frame 3. The inner sides of the switch button 32 and the reset button 33 are respectively arranged on the outer ends of the switch seat 62 and the reset seat 63. The switch seat 62, the reset seat 63, the light guide grid 34 and the power interface 35 are arranged on the circuit board 6. An ion detector 21 is arranged at the upper right corner of the front side of the circuit board 6, and the outer end of the ion detector 21 is arranged on the front shell 2. The switch seat 62, the reset seat 63, the light guide grid 34, the power interface 35 and the ion detector 21 are electrically connected to an external power supply and an external controller, and are controlled by the external controller.

[0022] A speaker opening 31 is disposed at the outer end of the middle frame 3 , and a dustproof pad is disposed in the speaker opening 31 .

[0023] A fixing beam 53 is disposed at the front end of the hanging plate 5 , and the fixing beam 53 is disposed at the front end of the rear shell 4 .

[0024] A fixing frame 51 is disposed at the rear end of the hanging plate 5 , and a hanging hole 52 is disposed on the fixing frame 51 .

[0025] A cushioning foam 64 is provided at the connection between the circuit board 6 and the front shell 2 .

[0026] The working principle of the present application is as follows: when the present invention is used, the present invention is fixed to a suitable position through the hanging hole 52. When the present invention needs to be disassembled and repaired, the positioning bolt 42 is unscrewed, and then the rear shell 4 and the front shell 2 are directly unplugged in turn, and the circuit board 6 or the ion detector 2 can be taken out for maintenance; when installation is required, first place the front shell 2 on the shell beam 1 and place the circuit board 6 in the front positioning column 22 through the through hole 61, and then buckle the rear shell 4 and buckle it to the outside of the front positioning column 22 through the rear positioning column 41, and lock the positioning bolt 42 into the rear positioning column 41 behind the rear shell 4.

[0027] The beneficial technical effects of implementing the present application are as follows: first, since the utility model is provided with a shell beam 1, a front shell 2, a middle frame 3, a rear shell 4, a front positioning column 22, a rear positioning column 41 and a positioning bolt 424, the utility model can be disassembled and assembled by only unscrewing or screwing on the positioning bolt 42, which is convenient for disassembly and assembly when the utility model is repaired; secondly, since the utility model is provided with a hanging plate 5, a fixing frame 51, a hanging hole 52 and a fixing beam 53, it is convenient for the utility model to be fixedly installed in a suitable position.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smoke alarm that is easy to assemble and disassemble, comprising a shell beam (1), characterized in that: A middle frame (3) is arranged in the center of the shell beam (1); a front shell (2) and a rear shell (4) are arranged at the front and rear ends of the shell beam (1), respectively; a hanging plate (5) is arranged at the rear end of the rear shell (4); and a circuit board (6) is arranged in the middle frame (3); A front positioning column (22) is provided at the rear end of the front shell (2), the front positioning column (22) is arranged in a through hole (61), the through hole (61) is arranged on the circuit board (6), a rear positioning column (41) is provided at the outer end of the front positioning column (22), the rear positioning column (41) is arranged at the front end of the rear shell (4), and a positioning bolt (42) is provided in the rear positioning column (41); A switch button (32) and a reset button (33) are respectively arranged on the left and right sides of the upper end of the middle frame (3); a light guide grid (34) and a power interface (35) are respectively arranged on the upper and lower sides of the right end of the middle frame (3); the inner sides of the switch button (32) and the reset button (33) are respectively arranged on the outer ends of the switch seat (62) and the reset seat (63); the switch seat (62), the reset seat (63), the light guide grid (34) and the power interface (35) are arranged on the circuit board (6); an ion detector (21) is arranged at the upper right corner of the front face of the circuit board (6); the outer end of the ion detector (21) is arranged on the front shell (2); the switch seat (62), the reset seat (63), the light guide grid (34), the power interface (35) and the ion detector (21) are electrically connected to an external power supply and an external controller, and are controlled by the external controller.

2. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: The outer end of the middle frame (3) is provided with a speaker opening (31), and a dustproof pad is provided in the speaker opening (31).

3. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: A fixed beam (53) is provided at the front end of the hanging plate (5), and the fixed beam (53) is arranged at the front end of the rear shell (4).

4. The smoke alarm that is easy to assemble and disassemble according to claim 3, characterized in that: A fixing frame (51) is provided at the rear end of the hanging plate (5), and a hanging hole (52) is provided on the fixing frame (51).

5. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: A buffer foam (64) is provided at the connection between the circuit board (6) and the front shell (2).

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