Quick-release alarm for household combustible gas detector

Abstract

The utility model discloses a quick release type alarm for a household combustible gas detector, which comprises a middle shell, an upper cover and a PCB (printed circuit board), a buzzer alarm is integrated on the outer surface wall of the PCB, a combination component for quick alignment of the PCB is arranged on the inner surface wall of the middle shell, a fixed column is fixedly connected to the inner surface wall of the middle shell, and the PCB is combined on the outer side of the fixed column. In the application, the through hole reserved in the PCB is combined with the convex column and the fixed column in the middle shell, then the upper cover is closed, the matching of the convex edge and the step 2 can enable the upper cover and the middle shell to be quickly aligned, the open end of the abutting column abuts against the PCB, and the step 1 on the inner surface wall of the abutting column abuts against the open end of the fixed column. And finally, the locking rod is screwed with the middle shell, the fixing column and the abutting column at the same time, so that the middle shell, the fixing column and the PCB are fixed, the detection alarm body is assembled, and the middle shell, the fixing column and the PCB can be quickly disassembled and assembled only by separating the locking rod subsequently.

Description

TECHNICAL FIELD

[0001] The utility model relates to combustible gas detection technical field especially, it is a kind of quick-release alarm for domestic combustible gas detector. BACKGROUND

[0002] Domestic combustible gas detector is a kind of equipment for detecting the combustible gas concentration in family environment, when gas concentration reaches preset threshold, detector triggers alarm, reminds the occupant to take corresponding measures, avoids potential danger.

[0003] Chinese patent publication number CN307264925S, publication time is 20220415, discloses domestic combustible gas detector, its main body includes detection alarm main body and connecting base, and detection alarm main body includes middle shell, upper cover, PCB board and electrical element integrated on PCB board.

[0004] Such as the quick-release alarm for domestic combustible gas detector of existing above is first through fastening rod and is fixed in middle shell in PCB board, and the fixing of upper cover and middle shell is completed in another group of fastening rod, in specific implementation process, the stability of detection alarm whole is guaranteed by the way of connection of two groups of fastening rods, but when carrying out the maintenance of PCB board subsequently, the process of dismounting of two groups of fastening rods will be relatively inconvenient, so it is urgent to propose the quick-release alarm for domestic combustible gas detector to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at: in order to solve above problem, and propose a kind of quick-release alarm for domestic combustible gas detector.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of quick-release alarm for domestic combustible gas detector, including middle shell, upper cover and PCB board, the outer wall of PCB board is integrated with buzzer alarm, the inner wall of middle shell is provided with the combination component for the fast alignment of PCB board, the inner wall of middle shell is fixedly connected with fixed column, the PCB board is combined in the outside of fixed column, the inner wall of upper cover is fixedly connected with the abutment column that is abutted with the outer wall of PCB board, the middle shell, fixed column and abutment column are fixedly connected by locking rod.

[0008] Preferably, the inner wall of middle shell is shrink-fitted with sealing plug, the inner wall of sealing plug is abutted with the outer wall of locking rod.

[0009] Preferably, the front end surface of upper cover is provided with multiple openings, and multiple openings are distributed in triangular shape.

[0010] Preferably, the abutting column is internally provided with a first step, and the first step is in abutment with the open end of the fixing column.

[0011] Preferably, the rear end surface of the upper cover is fixedly connected with a convex edge, and the front end surface of the middle shell is provided with a second step matched with the convex edge.

[0012] Preferably, the combination assembly comprises a convex column fixedly connected with the inner wall of the middle shell, the convex column is in a T-shaped structure, and the rear end surface of the PCB is in abutment with the front end surface of the horizontal end of the convex column.

[0013] In conclusion, due to the adoption of the above technical solutions, the present application has the following advantages:

[0014] 1. In the present application, the reserved perforation on the PCB is combined with the convex column and the fixing column inside the middle shell, then the upper cover is closed, the cooperation between the convex edge and the second step can quickly align the upper cover and the middle shell, the open end of the abutting column is in abutment with the PCB, and the first step of the inner wall of the abutting column is in abutment with the open end of the fixing column, finally the locking rod is screwed into the middle shell, the fixing column and the abutting column, thereby realizing the fixation of the middle shell, the fixing column and the PCB, and achieving the assembly of the detection alarm main body, and the subsequent quick disassembly of the middle shell, the fixing column and the PCB can be realized by separating the locking rod.

[0015] 2. In the present application, after the locking rod is screwed into the middle shell, the fixing column and the abutting column, the sealing plug is inserted into the middle shell, the interference fit ensures the position stability of the sealing plug, the sealing plug can isolate the locking rod, and can effectively prevent the locking rod from loosening through contact limiting, thereby improving the stability of the quick disassembly type alarm for household combustible gas detector. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 shows a schematic diagram of the overall structure according to an embodiment of the present application;

[0017] Figure 2 Fig. 2 shows a schematic diagram of the middle shell structure according to an embodiment of the present application;

[0018] Figure 3 Fig. 3 shows a schematic diagram of the abutting column structure according to an embodiment of the present application;

[0019] Figure 4 Fig. 4 shows a schematic diagram of the PCB structure according to an embodiment of the present application.

[0020] LEGEND:

[0021] 1, middle shell; 2, upper cover; 3, opening; 4, PCB board; 5, buzzer alarm; 6, locking rod; 7, sealing plug; 8, abutting column; 9, step one; 10, convex edge; 11, step two; 12, convex column; 13, fixed column. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a technical scheme:

[0024] A quick release type alarm for household combustible gas detector, including middle shell 1, upper cover 2 and PCB board 4, the outer wall of PCB board 4 is integrated with buzzer alarm 5, the inner wall of middle shell 1 is provided with the combination component for the quick alignment of PCB board 4, the inner wall of middle shell 1 is fixedly connected with fixed column 13, PCB board 4 is combined on the outside of fixed column 13, the inner wall of upper cover 2 is fixedly connected with abutting column 8 that is abutted with the outer wall of PCB board 4, middle shell 1, fixed column 13 and abutting column 8 are fixedly connected through locking rod 6;

[0025] The reserved perforation on PCB board 4 is combined with convex column 12 and fixed column 13 inside middle shell 1, then upper cover 2 is closed, the cooperation of convex edge 10 and step two 11 can make upper cover 2 and middle shell 1 quickly align, the open end of abutting column 8 is abutted to PCB board 4, and the step one 9 of the inner wall of abutting column 8 is abutted with the open end of fixed column 13, finally locking rod 6 is screwed with middle shell 1, fixed column 13 and abutting column 8 at the same time, so as to realize the fixation of middle shell 1, fixed column 13 and PCB board 4, thereby realizing the assembly of detection alarm main body, and subsequent only needs to separate locking rod 6 to realize the quick disassembly of middle shell 1, fixed column 13 and PCB board 4.

[0026] Specifically, as shown in Figure 2 And Figure 4 The inner wall of sealing plug 7 is abutted with the outer wall of locking rod 6, after locking rod 6 is screwed with middle shell 1, fixed column 13 and abutting column 8 at the same time, sealing plug 7 is inserted into the inside of middle shell 1, the interference fit mode guarantees the position stability of sealing plug 7 itself, sealing plug 7 realizes the isolation of locking rod 6, and also can effectively avoid the loosening of locking rod 6 through the contact limiting mode, thereby improving the stability of the quick release type alarm for household combustible gas detector.

[0027] Specifically, as Figure 2 With Figure 3 As shown in the drawings, the upper cover 2 front end face is provided with a plurality of openings 3, and the plurality of openings 3 are triangularly distributed, one group is used to ensure the stable propagation of the sound of the buzzer 5, and the other two groups are used for heat dissipation of the corresponding components. The inner part of the abutting column 8 is provided with a step one 9, and the step one 9 abuts the open end of the fixed column 13, so as to further ensure the stability of the limiting of the PCB board 4. The rear end face of the upper cover 2 is fixedly connected with a convex edge 10, and the front end face of the middle shell 1 is provided with a step two 11 matched with the convex edge 10. The cooperation of the convex edge 10 and the step two 11 can quickly align the upper cover 2 and the middle shell 1. The combination assembly includes a convex column 12 fixedly connected with the inner wall of the middle shell 1. The convex column 12 is in T-shaped structure. The rear end face of the PCB board 4 abuts the front end face of the horizontal end of the convex column 12. The corresponding state of the PCB board 4 and the middle shell 1 can be quickly determined through the convex column 12.

[0028] Working principle: the reserved perforation on the PCB board 4 is combined with the convex column 12 and the fixed column 13 inside the middle shell 1, then the upper cover 2 is closed, the cooperation of the convex edge 10 and the step two 11 can quickly align the upper cover 2 and the middle shell 1, the open end of the abutting column 8 abuts the PCB board 4, and the step one 9 of the inner wall of the abutting column 8 abuts the open end of the fixed column 13, finally the locking rod 6 is simultaneously screwed with the middle shell 1, the fixed column 13 and the abutting column 8, so as to realize the fixation of the middle shell 1, the fixed column 13 and the PCB board 4, thereby realizing the assembly of the detection alarm main body. Subsequently, only the separation of the locking rod 6 can realize the quick disassembly of the middle shell 1, the fixed column 13 and the PCB board 4. After the locking rod 6 is simultaneously screwed with the middle shell 1, the fixed column 13 and the abutting column 8, the sealing plug 7 is inserted into the middle shell 1. The interference fit mode ensures the position stability of the sealing plug 7 itself. The sealing plug 7 realizes the isolation of the locking rod 6, and also effectively avoids the loosening of the locking rod 6 through the contact limiting mode, thereby improving the stability of the quick disassembly type alarm used for household combustible gas detectors.

[0029] The above description of the 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 can 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 these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick-release alarm for a household combustible gas detector, comprising a middle shell (1), an upper cover (2) and a PCB board (4), wherein a buzzer alarm (5) is integrated on the outer wall of the PCB board (4), characterized in that: The inner surface wall of the middle shell (1) is provided with a coupling assembly for quickly aligning the PCB board (4); the inner surface wall of the middle shell (1) is fixedly connected with a fixing column (13); the PCB board (4) is coupled to the outside of the fixing column (13); the inner surface wall of the upper cover (2) is fixedly connected with an abutting column (8) abutting against the outer surface wall of the PCB board (4); the middle shell (1), the fixing column (13) and the abutting column (8) are fixedly connected via a locking rod (6).

2. A quick-release alarm for household combustible gas detectors according to claim 1, characterized in that: The inner surface wall of the middle shell (1) is interference-fitted with a sealing plug (7), and the inner surface wall of the sealing plug (7) abuts against the outer surface wall of the locking rod (6).

3. A quick-release alarm for household combustible gas detectors according to claim 2, characterized in that: The front end surface of the upper cover (2) is provided with a plurality of groups of openings (3), and the plurality of groups of openings (3) are distributed in a triangular shape.

4. A quick-release alarm for a household combustible gas detector according to claim 3, characterized in that: A step 1 (9) is provided inside the abutting column (8), and the step 1 (9) abuts against the open end of the fixing column (13).

5. The quick-release alarm for household combustible gas detectors according to claim 1, characterized in that: The rear end face of the upper cover (2) is fixedly connected with a convex edge (10), and the front end face of the middle shell (1) is provided with a second step (11) matching the convex edge (10).

6. The quick-release alarm for household combustible gas detectors according to claim 1, characterized in that: The coupling assembly comprises a convex column (12) fixedly connected to the inner surface wall of the middle shell (1); the convex column (12) is in a T-shaped structure; the rear end surface of the PCB board (4) abuts against the front end surface of the horizontal end of the convex column (12).

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