CN211827525U - Gas leakage alarm - Google Patents

Abstract

The application provides an alarm is revealed in gas, include: a shell body provided with air holes; the circuit board is arranged in the shell and electrically connected with the detection assembly; the bracket is detachably arranged at the top end of the shell and is provided with a plurality of mounting holes; the bracket is mounted on the fixing surface through a screw penetrating through the mounting hole or fixed on the fixing surface through double-sided adhesive. The utility model provides an alarm is revealed in gas, support have two kinds of mounting means, both can be through beating the screw fixation at the stationary plane, can be fixed through the double faced adhesive tape again, can select one of them mounting means according to specific application environment, provide nimble mounting means for the user, facilitate for the use of product.

Description

Gas leakage alarm

Technical Field

This application belongs to security protection monitoring facilities technical field, and more specifically says, relates to an alarm is revealed to gas.

Background

The gas leakage alarm can detect the content of gas leaked out of air, and can play a role in alarming when the gas reaches a certain concentration. The gas leakage alarm is installed on wall or ceiling more, but its mounting means is comparatively single, and the screw is installed it in the stationary plane to the current universal fixity, and alternative less is difficult to adapt to practical application installation demand.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide an alarm is revealed in gas to solve the single technical problem of mounting means that exists among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a gas leakage alarm including:

a shell body provided with air holes;

the circuit board is arranged in the shell and electrically connected with the detection assembly;

the bracket is detachably arranged at the top end of the shell and is provided with a plurality of mounting holes;

the bracket is mounted on the fixing surface through a screw penetrating through the mounting hole or fixed on the fixing surface through double-sided adhesive.

Optionally, the casing includes preceding shell and the backshell that is together fixed through the buckle, support demountable installation in the top of backshell, the detection subassembly is located the top surface of circuit board, a plurality of bleeder vents have been seted up to the lateral wall hoop interval of backshell.

Optionally, the inner bottom surface of the front shell is circumferentially provided with a plurality of barbs at intervals, the periphery of the circuit board is provided with a clamping groove at a position corresponding to each barb, and the hook portions of the barbs are buckled with the corresponding clamping grooves to fix the circuit board to the front shell.

Optionally, a plurality of support ribs are arranged at intervals in the front shell, and the circuit board is fastened and abutted to the support ribs by the barbs.

Optionally, the rear shell is provided with a through hole for use when the gas leakage alarm is upgraded or burned.

Optionally, a concave groove adapted to the bracket is formed in the top end of the rear shell in a concave manner, a plurality of clamping holes are circumferentially arranged on the inner bottom surface of the concave groove at intervals, reverse buckles are respectively arranged at positions of the bottom surface of the bracket corresponding to the clamping holes, and the reverse buckles are buckled with the corresponding clamping holes, so that the bracket is fixedly mounted on the top end of the rear shell.

Optionally, the clamping hole includes a first hole section and a second hole section which are communicated with each other, the first hole section and the second hole section are both arc-shaped hole sections, the width of the first hole section is greater than that of the second hole section, the width of the first hole section is matched with the hook portion of the reverse buckle, the width of the second hole section is less than that of the hook portion of the reverse buckle, and the hook portion of the reverse buckle is buckled on the bottom surface of the second hole section corresponding to the rear shell.

Optionally, a plurality of through holes are circumferentially arranged on the inner bottom surface of the groove at intervals, an elastic arm is arranged in each through hole, and a protrusion protruding out of the inner bottom surface of the groove is arranged at one end of each elastic arm; the bottom surface of the support is provided with accommodating grooves corresponding to the positions of the elastic arms respectively, the side of each accommodating groove is provided with a limiting block, when the protrusions slide through the corresponding limiting blocks along the preset direction, the tops of the protrusions slide into the corresponding accommodating grooves, and the reverse buckle moves from the first hole section corresponding to the clamping holes to the second hole section, so that the support is buckled on the rear shell.

Optionally, a buzzer is disposed on the bottom surface of the circuit board, a plurality of sound transmission holes are formed in the bottom surface of the front shell, and an area surrounded by the plurality of sound transmission holes is annular.

Optionally, a DC seat is arranged on the circuit board, a charging interface is arranged on the DC seat, and a jack is arranged at a position of the housing corresponding to the charging interface.

The application provides an alarm is revealed in gas's beneficial effect lies in: compared with the prior art, this application gas reveals alarm, support have two kinds of mounting means, both can be through beating the screw fixation at the stationary plane, can select one of them mounting means again through the double faced adhesive tape, can provide nimble mounting means for the user according to specific application environment, facilitate for the use of product.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective view of a gas leakage alarm provided in an embodiment of the present application;

FIG. 2 is a perspective view of the gas leak alarm of FIG. 1 shown removed from the bracket;

FIG. 3 is a perspective view of the gas leak alarm of FIG. 1 at another angle;

FIG. 4 is a schematic side view of the gas leak alarm of FIG. 1;

FIG. 5 is a first schematic illustration of the gas leak alarm of FIG. 1 in an exploded view;

FIG. 6 is a second schematic diagram of the gas leakage alarm shown in FIG. 1;

FIG. 7 is a longitudinal cross-sectional view of the gas leak alarm of FIG. 1;

FIG. 8 is a schematic view of the assembly of the circuit board and the front housing of the gas leak alarm of FIG. 5;

fig. 9 is a perspective view of a bracket in the gas leakage alarm shown in fig. 6.

Wherein, in the figures, the respective reference numerals:

100-a housing; 200-a circuit board; 300-a scaffold; 400-double sided tape; 110-a front shell; 120-rear shell; 101-air holes; 102-a jack; 111-a cartridge; 112-barbs; 113-support ribs; 114-sound transmission hole; 115-on/off key; 121-a clamp arm; 122-a groove; 123-perforation; 124-clamping hole; 1241-first bore section; 1242-second bore section; 125-through holes; 126-a resilient arm; 127-a protrusion; 128-positioning posts; 210-a detection component; 220-a buzzer; 230-DC seat; 201-card slot; 301-a flange; 310-mounting holes; 320-reversing; 330-a containing groove; 340-a limiting block; 350-positioning groove.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, 2 and 5 together, a gas leakage alarm provided in an embodiment of the present application will now be described. The gas leakage alarm comprises a shell 100, a circuit board 200 and a bracket 300. The circuit board 200 is disposed in the housing 100, the circuit board 200 is electrically connected to the probe assembly 210, and the probe assembly 210 is soldered to the circuit board 200. As shown in fig. 3 and 4, the casing 100 is an injection molded part, and is generally shaped like a cake, the corners of the outer wall are arc-shaped transitions, so that the whole is more attractive, an operator cannot be scratched during installation, and the casing 100 is provided with the vent holes 101 for allowing external air to enter the casing 100 and contact the detection assembly 210. The bracket 300 is generally disc-shaped as a whole, the top surface of the bracket 300 is a plane, the bracket 300 is detachably mounted at the top end of the casing 100, and after the bracket 300 is mounted on the casing 100, the top surface of the bracket 300 can be flush with the top surface of the casing 100; as shown in fig. 1 and 6, the bracket 300 is provided with a plurality of mounting holes 310, specifically, two strip-shaped mounting holes 310 may be provided at intervals, the two mounting holes 310 are close to the edge of the bracket 300, and the extending directions of the lengths of the two mounting holes 310 are perpendicular to each other, so that the product is more stable after being fixed by screws; as shown in fig. 7 and 9, a flange 301 is disposed on the periphery of the bottom surface of the bracket 300, and when the bracket 300 is mounted on the housing 100, the flange 301 is abutted against the top surface of the housing 100, so that a gap is formed between the bracket 300 and the housing 100 to accommodate the head of a screw; the bracket 300 may be fixed to the fixing surface by a double-sided tape 400, and the cross-sectional area of the double-sided tape 400 is substantially equal to the cross-sectional area of the bracket 300. That is, one of the mounting methods may be selected to mount and fix the product on a fixing surface, and the bracket 300 is mounted on the fixing surface by a screw passing through the mounting hole 310 or fixed to the fixing surface by the double-sided adhesive tape 400, and the fixing surface may be, but is not limited to, a ceiling, a wall surface, or a table top.

The application provides an alarm is revealed in gas, compares with prior art, and support 300 has two kinds of mounting means, both can be through beating the screw fixation at the stationary plane, can select one of them mounting means according to concrete application environment again through double faced adhesive tape 400 fixed, provides nimble mounting means for the user, facilitates for the use of product.

In one embodiment, referring to fig. 1, 5 and 8, the housing 100 includes a front shell 110 and a rear shell 120 fixed together by a snap fit, and the front shell 110 and the rear shell 120 are both made of injection molded parts. Specifically, a plurality of clamping blocks 111 are uniformly arranged on the inner side wall of the front shell 110 at intervals in the circumferential direction, clamping arms 121 are respectively arranged on the inner side wall of the rear shell 120 corresponding to the clamping positions, the bottom ends of the clamping arms 121 extend into the front shell 110, clamping grooves matched with the clamping blocks 111 are formed in the positions, close to the bottom ends, of the clamping arms 121, the clamping grooves of the clamping arms 121 are aligned to the corresponding clamping blocks 111, the clamping blocks 111 are clamped into the clamping grooves, and therefore assembly between the front shell 110 and the rear shell 120 is achieved. The front shell 110 and the rear shell 120 are fixed through the buckles, so that the time and the cost for screwing can be saved, the assembly is simple, and the time and the cost are saved.

The bracket 300 is detachably mounted on the top of the rear case 120, the detecting assembly 210 is disposed on the top surface of the circuit board 200, and a plurality of air holes 101 are circumferentially formed in the sidewall of the rear case 120 at intervals. The air holes 101 are strip-shaped holes, and the specific size and the setting density of the air holes 101 can be set according to the actual application environment.

In an embodiment, referring to fig. 5 and 8, a plurality of barbs 112 are circumferentially disposed at intervals on the inner bottom surface of the front shell 110, a plurality of slots 201 are respectively disposed on the periphery of the circuit board 200 at positions corresponding to the barbs 112, and the hooks of the barbs 112 are buckled to the corresponding slots 201 to fix the circuit board 200 to the front shell 110. The circuit board 200 may have flat positions around it, and a corresponding positioning structure is provided in the front housing 110, so that a fool-proof structure may be formed in the front housing 110, and the circuit board 200 may be directly snapped into the front housing 110 to achieve the snap-fitting.

In an embodiment, referring to fig. 5, 7 and 8, a plurality of support ribs 113 are disposed at intervals in the front housing 110, and the circuit board 200 is fastened and abutted to the support ribs 113 by the barbs 112. The barbs 112 may be disposed on the inner bottom wall of the front shell 110, and specifically, 3 to 5 barbs 112 may be uniformly spaced in the front shell 110; the support ribs 113 may extend from the inner bottom wall to the inner side wall of the front case 110, and the support ribs 113 respectively form support stages for supporting the periphery of the bottom surface of the circuit board 200, such that the support stages together form a support surface for supporting the circuit board 200.

In an embodiment, referring to fig. 2 and 5, the rear housing 120 is provided with a through hole 123 for upgrading or burning the gas leakage alarm. Corresponding external equipment such as burning equipment can penetrate through the through hole 123 through wiring to be connected with the corresponding pin of the circuit board 200, and then the gas leakage alarm is burned or upgraded, so that the problem that the machine needs to be disassembled when the product is upgraded or burned can be avoided.

In an embodiment, referring to fig. 2, 5 and 6, the top of the rear housing 120 is recessed to form a groove 122 adapted to the bracket 300, the cross section of the groove 122 is circular, the thickness of the bracket 300 is set to be equal to the depth of the groove 122, and when the bracket 300 is assembled in the groove 122 of the rear housing 120, the top surface of the bracket 300 is flush with the top surface of the rear housing 120.

A plurality of clamping holes 124 are circumferentially arranged on the inner bottom surface of the groove 122 at intervals, an inverted buckle 320 is respectively arranged at the position of the bottom surface of the bracket 300 corresponding to each clamping hole 124, and the inverted buckle 320 is buckled with the corresponding clamping hole 124 so as to fix the bracket 300 on the top end of the rear shell 120. The bracket 300 and the rear shell 120 are assembled through the matching of the reverse buckle 320 and the clamping hole 124, and the operation is convenient.

In one embodiment, referring to fig. 6 and 7, the fastening hole 124 includes a first hole segment 1241 and a second hole segment 1242 which are connected to each other, the first hole segment 1241 and the second hole segment 1242 are both arc-shaped hole segments, and the width of the first hole segment 1241 is greater than the width of the second hole segment 1242. The width of the first hole section 1241 is adapted to the hook of the inverse buckle 320, so that the hook of the inverse buckle 320 is conveniently buckled in from the first hole section 1241; the width of the second hole section 1242 is smaller than the hook of the inverse buckle 320, and the hook of the inverse buckle 320 is fastened to the bottom surface of the rear case 120 corresponding to the second hole section 1242.

The two sections with different widths are arranged in the clamping hole 124, so that the bracket 300 and the rear shell 120 are fastened to form a stable assembly structure; the transition between the first and second hole sections 1241 and 1242 is smooth, so that the inverse buckle 320 can move smoothly in the fastening hole 124 when the bracket 300 rotates, and the assembly smoothness and efficiency are improved.

In an embodiment, referring to fig. 2, 5 and 9, a plurality of through holes 125 are circumferentially spaced at intervals on the inner bottom surface of the groove 122, an elastic arm 126 is disposed in the through hole 125, and one end of the elastic arm 126 has a protrusion 127 protruding from the inner bottom surface of the groove 122; the bottom surface of the bracket 300 is provided with a receiving groove 330 corresponding to each elastic arm 126, a limit block 340 is disposed beside the receiving groove 330, when the protrusion 127 slides over the corresponding limit block 340 along a predetermined direction, the top of the protrusion 127 slides into the corresponding receiving groove 330, and the inverse buckle 320 moves from the first hole section 1241 to the second hole section 1242 corresponding to the clamping hole 124, so that the bracket 300 is fastened to the rear case 120.

During installation, each reverse buckle 320 of the support 300 is aligned to the corresponding clamping hole 124, then the support is rotated for a certain angle according to a preset direction, when a click sound is heard, the protrusion 127 on the elastic arm 126 slides over the corresponding limiting block 340, at the moment, the reverse buckle 320 moves to the corresponding first hole section 1241, the hook part of the reverse buckle 320 is buckled on the rear shell 120, the assembly between the support 300 and the rear shell 120 is realized, and the operation is convenient. The arrangement of the elastic arm 126 and the protrusion 127 can improve the operation experience, and the protrusion 127 also has the function of stopping the back.

In one embodiment, referring to fig. 5 and 9, the bracket 300 is uniformly provided with 3 back-off buttons 320 at intervals, the rear shell 120 is correspondingly provided with 3 clamping holes 124 and 2 elastic arms 126, and the elastic arms 126 and the clamping holes 124 are arranged in a staggered manner; the inner bottom surface of the accommodating groove 330 is further provided with a positioning column 128, the support 300 is provided with an arc-shaped positioning groove 350 corresponding to the positioning column 128, the positioning groove 350 and the positioning column 128 are arranged to facilitate the alignment operation when the support 300 is installed, and the assembly efficiency is improved.

In an embodiment, referring to fig. 3 and 6, a buzzer 220 (not shown) is disposed on a bottom surface of the circuit board 200, the buzzer 220 is integrally cylindrical, the bottom surface of the front casing 110 is provided with a plurality of sound holes 114, an area surrounded by the plurality of sound holes 114 is annular, a central axis of the annular area is set to coincide with a central axis of the gas leakage alarm, and the arrangement of the sound holes 114 can increase the alarm volume. The front shell 110 is provided with an on-off key 115, the on-off key 115 is arranged right opposite to a trigger switch on the circuit board 200, the gas leakage alarm can work normally after the on-off key 115 is pressed down, and the gas leakage alarm is turned off after the on-off key 115 is pressed down again or pressed down for a long time.

In an embodiment, referring to fig. 1 and 5, a DC socket 230 is disposed on the circuit board 200, the DC socket 230 is welded on the top surface of the circuit board 200, a charging interface is disposed on the DC socket 230, a jack 102 is disposed at a position of the housing 100 corresponding to the charging interface, and a power supply is provided for the gas leakage alarm through the charging interface.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides an alarm is revealed in gas which characterized in that: the method comprises the following steps:

a shell body provided with air holes;

the circuit board is arranged in the shell and electrically connected with the detection assembly;

the bracket is detachably arranged at the top end of the shell and is provided with a plurality of mounting holes;

the bracket is mounted on the fixing surface through a screw penetrating through the mounting hole or fixed on the fixing surface through double-sided adhesive.

2. A gas leak alarm according to claim 1, characterised in that: the casing includes preceding shell and the backshell that is in the same place through the buckle, support demountable installation in the top of backshell, the detection subassembly is located the top surface of circuit board, a plurality of bleeder vents have been seted up to the lateral wall hoop interval of backshell.

3. A gas leak alarm according to claim 2, wherein: the inner bottom surface of the front shell is circumferentially provided with a plurality of barbs at intervals, clamping grooves are respectively formed in the periphery of the circuit board corresponding to the positions of the barbs, and hook portions of the barbs are buckled with the corresponding clamping grooves so as to fix the circuit board on the front shell.

4. A gas leak alarm according to claim 3, characterised in that: a plurality of support ribs are arranged in the front shell at intervals, and the circuit board is fastened and abutted to the support ribs by the barbs.

5. A gas leak alarm according to claim 2, wherein: the rear shell is provided with a through hole for the gas leakage alarm to be used during upgrading or burning.

6. A gas leak alarm according to claim 2, wherein: the top end of the rear shell is sunken to form a groove matched with the support, a plurality of clamping holes are formed in the inner bottom surface of the groove at intervals in the circumferential direction, reverse buckles are respectively arranged at positions, corresponding to the clamping holes, of the bottom surface of the support, and the reverse buckles are buckled with the corresponding clamping holes so as to fix the support to the top end of the rear shell.

7. The gas leak alarm of claim 6, wherein: the card hole is including first hole section and the second hole section that is linked together, first hole section and second hole section are the arc hole section, the width of first hole section is greater than the width of second hole section, the width adaptation of first hole section hook portion of back-off, the width of second hole section is less than hook portion of back-off, hook portion lock joint of back-off correspond the bottom surface of second hole section.

8. The gas leak alarm of claim 7, wherein: a plurality of through holes are formed in the inner bottom surface of the groove at intervals in the circumferential direction, an elastic arm is arranged in each through hole, and a protrusion protruding out of the inner bottom surface of the groove is arranged at one end of each elastic arm; the bottom surface of the support is provided with accommodating grooves corresponding to the positions of the elastic arms respectively, the side of each accommodating groove is provided with a limiting block, when the protrusions slide through the corresponding limiting blocks along the preset direction, the tops of the protrusions slide into the corresponding accommodating grooves, and the reverse buckle moves from the first hole section corresponding to the clamping holes to the second hole section, so that the support is buckled on the rear shell.

9. A gas leak alarm according to claim 2, wherein: the bottom surface of the circuit board is provided with a buzzer, the bottom surface of the front shell is provided with a plurality of sound transmission holes, and an area surrounded by the plurality of sound transmission holes is annular.

10. A gas leak alarm according to any one of claims 1 to 9 wherein: the circuit board is provided with a DC seat, the DC seat is provided with a charging interface, and the shell is provided with a jack corresponding to the charging interface.

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