CN211979834U - Combustible gas alarm convenient to installation - Google Patents
Combustible gas alarm convenient to installation Download PDFInfo
- Publication number
- CN211979834U CN211979834U CN202020756717.XU CN202020756717U CN211979834U CN 211979834 U CN211979834 U CN 211979834U CN 202020756717 U CN202020756717 U CN 202020756717U CN 211979834 U CN211979834 U CN 211979834U
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- circuit board
- frame
- combustible gas
- main shell
- gas alarm
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Abstract
A combustible gas alarm convenient for installation effectively solves the problems of inconvenient installation of a circuit board, low working efficiency and the like, and comprises a main shell, wherein the left side and the right side of the main shell are provided with wire inlet holes, the lower end of the main shell is connected with an air chamber, a frame is fixed in the main shell, square through grooves are arranged in the front and the back of the middle position of the frame, the bottom in the frame is provided with a first limiting groove, the left end in the frame is provided with a second limiting groove, the frame is internally provided with a sliding groove which is communicated up and down, the first limiting groove, the second limiting groove and the sliding groove are sequentially communicated end to end, the frame is internally provided with a circuit board which is connected up and down in a sliding way, the main shell is rotatably connected with a worm which is arranged up and down, the main shell is rotatably connected with a worm wheel which is, the rear end face of the circuit board is provided with the patch, so that the operation is simple, the working efficiency is high, the failure rate is low, and the installation is convenient.
Description
Technical Field
The utility model relates to a combustible gas alarm technical field especially relates to a combustible gas alarm convenient to installation.
Background
With the continuous progress of society, the west-east gas transportation project gradually falls into, and natural gas has already walked into thousands of households, has brought very big facility for life, also has safe danger simultaneously. If the hose connected with the cooking bench leaks air, the human body inhales natural gas to cause harm to the human body, and if the natural gas is not found in time, when the concentration of the natural gas reaches a certain value, risks such as explosion and the like which harm life and property may exist. Therefore, to effectively prevent natural gas, most of the people adopt a combustible gas alarm which is a detector responding to the concentration of single or multiple combustible gases. Whether can timely response natural gas leaks gas, however in the inside circuit board installation of combustible gas alarm, most of them adopt the mode of a plurality of screw-up installations, complex operation wastes time and energy to the screw is small, loses very easily, if the screw drops to the circuit board, causes circuit board short circuit trouble very easily, damages the circuit board, and it is very inconvenient to install, is unfavorable for the maintenance in circuit board later stage to maintain.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model aims at providing a combustible gas alarm convenient to installation, the effectual circuit board installation of having solved is inconvenient, complex operation, the low scheduling problem of work efficiency.
The technical scheme who solves is, including the main casing body, the left and right sides of the main casing body all is equipped with the entrance hole, the lower extreme of the main casing body is connected with the air chamber, main casing internal fixation has the frame, be equipped with square logical groove around the frame intermediate position, the bottom is equipped with first spacing groove in the frame, the left end is equipped with the second spacing groove in the frame, be equipped with the sliding tray that link up from top to bottom in the frame, first spacing groove, second spacing groove and sliding tray are head and the tail intercommunication in proper order, be equipped with the circuit board along sliding tray sliding connection from top to bottom in the frame, main casing internal rotation is connected with the worm that the direction set up from top to bottom, main casing internal rotation is connected with the worm wheel with worm meshing, the worm wheel coaxial fixed with the cam, the right-hand member.
The utility model discloses the structure is ingenious, easy operation, and work efficiency is high, and the fault rate is low, and simple to operate is favorable to later stage maintenance to maintain convenient and practical.
Drawings
Fig. 1 is a schematic view of a front view of the present invention.
Fig. 2 is a schematic diagram of the circuit board structure of the present invention.
Fig. 3 is a schematic view of the three-dimensional structure of the middle frame of the present invention.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
As shown in figures 1 to 3, the combustible gas alarm convenient to install comprises a main shell 1, wherein the left side and the right side of the main shell 1 are provided with wire inlet holes, the lower end of the main shell 1 is connected with an air chamber, a frame 2 is fixed in the main shell 1, square through grooves 3 are arranged in front of and behind the middle position of the frame 2, the bottom in the frame 2 is provided with a first limiting groove 4, the left end in the frame 2 is provided with a second limiting groove 5, a sliding groove 6 which is communicated up and down is arranged in the frame 2, the first limiting groove 4, the second limiting groove 5 and the sliding groove 6 are sequentially communicated end to end, a circuit board 7 which is connected up and down along the sliding groove 6 is arranged in the frame 2, the main shell 1 is rotatably connected with a worm 8 which is arranged up and down, a worm wheel 9 which is meshed with the worm 8 is rotatably connected in the main shell 1, the worm wheel 9, the front end face of the circuit board 7 is provided with components, and the rear end face of the circuit board 7 is provided with a patch.
In order to ensure that a gap exists at the rear side of the circuit board 7 and facilitate the heat dissipation of the circuit board 7, four support columns 12 are uniformly distributed and fixed in the main shell 1, and the support columns 12 are fixedly connected with the back of the frame 2.
In order to conveniently take and place the circuit board 7, a handle 13 is fixed at the upper end of the circuit board 7, and the handle 13 is positioned at the upper end of the frame 2.
The main shell 1 and the worm 8 are connected through a bearing.
The components and parts include display, button, bee calling organ, singlechip, socket, stabiliser, sensor and switch.
In order to ensure that the worm gear has certain self-locking performance, the lead angle of the worm 8 is smaller than the equivalent friction angle between the teeth of the meshing wheel.
In order to ensure the stability of the circuit board 7 in the frame 2, the circuit board 7 is a circular board, a first limit block 14 matched with the first limit groove 4 is fixed at the lower end of the circuit board 7, and a second limit block 15 matched with the second limit groove 5 is fixed at the left end of the circuit board 7.
When the utility model is used, the indication position or position relation of the terms of front, back, left, right, up and down in the utility model is based on the front view, the operator holds the handle 13 to slide the circuit board 7 downwards along the sliding groove 6, namely the circuit board 7 slides downwards in the frame 2, the bottom in the frame 2 is provided with the first limiting groove 4, the left end in the frame 2 is provided with the second limiting groove 5, the sliding groove 6 which is communicated up and down is arranged in the frame 2, the first limiting groove 4, the second limiting groove 5 and the sliding groove 6 are sequentially communicated end to end, when the first limiting block 14 at the lower end of the circuit board 7 falls into the first limiting groove 4, the second limiting block 15 at the left end of the circuit board 7 is matched with the second limiting groove 5, the handle 13 is positioned at the upper end of the frame 2 at the moment, the circuit board 7 is convenient to be taken and placed, then the worm 8 is rotated, the worm wheel 9 is driven by the worm, the worm wheel 9 drives the cam 10 to rotate anticlockwise, the convex surface of the cam 10 turns leftwards, the cam 10 extrudes the roller 11, the cam 10 not only extrudes the roller 11 downwards, but also pushes the roller 11 to slide leftwards, the roller 11 drives the circuit board 7 to slide leftwards, and the first limiting block 14 slides leftwards in the first limiting groove 4, so that the circuit board 7 is ensured to be completely attached to the first limiting groove 4 and the second limiting groove 5 respectively, the circuit board 7 is clamped and fixed vertically and leftwards, and the first limiting groove 4 and the second limiting groove 5 of the frame 2 further ensure the limiting of the front side and the rear side of the circuit board 7, the purpose of omnibearing vertical and left-right fixing of the circuit board 7 is achieved, the fixing effect is good, because the lead angle of the worm 8 is smaller than the equivalent friction angle between the meshing wheel teeth, the worm wheel has certain self-locking performance, the worm 8 stops rotating without other locking devices, the circuit board 7 can be ensured to be in a fixed state, the positioning effect is good, the installation is convenient, when the circuit board 7 needs to be taken out, the worm 8 is reversed, the worm 8 drives the worm wheel 9 to reverse, the worm wheel 9 drives the cam 10 to reverse, the cam 10 is separated from the roller 11, the handle 13 is taken up, and the circuit board 7 can be taken out upwards;
the front and the back of the middle position of the frame 2 are provided with square through grooves 3, which is convenient for observing components at the front end of the circuit board 7, the components comprise a display, a button, a buzzer, a single chip microcomputer, a socket, a voltage stabilizer, a sensor and a switch, the circuit board 7 designs a patch on the back surface, the components are designed on the front surface, the connection mode on the module of the circuit board 7 is a plug-in type, the wiring can be connected firstly and then plugged, the wiring is easy to wire, the time and the labor are saved, the operation is convenient, the failure rate is low, the circuit board layout of other manufacturers is that the components on the front surface and the back surface are arranged and are disordered, when the wiring is carried out, the wiring on the circuit board is necessary, the conductive objects such as wire ends, screws and the like are easily dropped on the circuit board 7, and the short circuit fault of the circuit board 7 is further, the operation is convenient.
The utility model discloses more traditional equipment has following benefit: 1) the structure is ingenious, the frame 2 structure is adopted, the circuit board 7 can be fixed in all directions, the stability is good, the installation is convenient, and the working efficiency is high; 2) the position of the cam 10 can be locked at any time by utilizing the structure of the worm wheel 9 and the worm 8, an additional locking device is not needed, and the operation is simple, convenient and quick; 3) the components and parts are arranged on the front side of the circuit board 7, the patch is arranged on the back side of the circuit board 7, the layout is reasonable, the failure rate is reduced, the installation is convenient, and the later maintenance is facilitated.
The utility model discloses the structure is ingenious, easy operation, and work efficiency is high, and the fault rate is low, and simple to operate is favorable to later stage maintenance to maintain, and convenient and practical has fine market prospect.
Claims (7)
1. A combustible gas alarm convenient to install comprises a main shell (1), wherein the left side surface and the right side surface of the main shell (1) are respectively provided with a wire inlet hole, the lower end of the main shell (1) is connected with an air chamber, and is characterized in that a frame (2) is fixed in the main shell (1), square through grooves (3) are arranged around the middle position of the frame (2), a first limit groove (4) is arranged at the bottom in the frame (2), a second limit groove (5) is arranged at the left end in the frame (2), a sliding groove (6) which is communicated up and down is arranged in the frame (2), the first limit groove (4), the second limit groove (5) and the sliding groove (6) are sequentially communicated end to end, a circuit board (7) which is connected up and down along the sliding groove (6) is arranged in the frame (2), a worm (8) which is arranged up and down is rotationally connected in the main shell (1), a worm wheel (9, the worm wheel (9) is coaxially fixed with a cam (10), the right end of the circuit board (7) is hinged with a roller (11) which is in rolling connection with the cam (10), the front end face of the circuit board (7) is provided with components, and the rear end face of the circuit board (7) is provided with a patch.
2. An easily installable combustible gas alarm according to claim 1 characterised in that four support posts (12) are uniformly fixed in the main housing (1), the support posts (12) being fixedly connected to the back of the frame (2).
3. A combustible gas alarm facilitating mounting according to claim 1 characterised in that a handle (13) is fixed to the upper end of the circuit board (7), the handle (13) being located at the upper end of the frame (2).
4. An easily installable combustible gas alarm according to claim 1 characterised in that the main housing (1) is connected to the worm (8) via a bearing.
5. The combustible gas alarm convenient to install of claim 1, wherein the components comprise a display, a button, a buzzer, a single chip microcomputer, a socket, a voltage stabilizer, a sensor and a switch.
6. An easily installable combustible gas alarm according to claim 1 characterised in that the lead angle of the worm (8) is less than the equivalent friction angle between the teeth of the meshing wheels.
7. The combustible gas alarm convenient to mount according to claim 1, characterized in that the circuit board (7) is a circular board, a first limit block (14) matched with the first limit groove (4) is fixed at the lower end of the circuit board (7), and a second limit block (15) matched with the second limit groove (5) is fixed at the left end of the circuit board (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020756717.XU CN211979834U (en) | 2020-05-09 | 2020-05-09 | Combustible gas alarm convenient to installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020756717.XU CN211979834U (en) | 2020-05-09 | 2020-05-09 | Combustible gas alarm convenient to installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211979834U true CN211979834U (en) | 2020-11-20 |
Family
ID=73371592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020756717.XU Active CN211979834U (en) | 2020-05-09 | 2020-05-09 | Combustible gas alarm convenient to installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211979834U (en) |
-
2020
- 2020-05-09 CN CN202020756717.XU patent/CN211979834U/en active Active
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