CN211787449U

CN211787449U - Combustible gas leakage alarm with electrostatic protection

Info

Publication number: CN211787449U
Application number: CN202020639257.2U
Authority: CN
Inventors: 邢映彪; 劳中建
Original assignee: Guangzhou Tongda Auto Electric Co Ltd
Current assignee: Guangzhou Tongda Auto Electric Co Ltd
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-10-27
Anticipated expiration: 2030-04-24

Abstract

The utility model discloses a combustible gas leakage alarm of electrostatic protection in area, include: the device comprises a shell, a fixing device and a clamping device, wherein an accommodating cavity is formed in the shell, the accommodating cavity is internally provided with the fixing device, and at least one pair of opposite side walls of the shell are respectively provided with a movable clamping structure penetrating through the side walls; the detection circuit board is fixedly connected in the accommodating cavity through the fixing device; the anti-static partition plate is buckled on the side wall of the shell, corresponds to the movable clamping structure in position and is used for sealing an opening formed on the side wall for arranging the movable clamping structure; and the rear side plate is clamped on the back surface of the shell. This scheme is equipped with prevents the static baffle, can effectual isolated static to MCU's on the detection circuitry board interference, has solved MCU because of the problem that static restarted, has improved the static anti jamming performance of alarm.

Description

Combustible gas leakage alarm with electrostatic protection

Technical Field

The utility model relates to a gas leakage alarm's technical field especially relates to a combustible gas leakage alarm of electrostatic protection.

Background

LNG, i.e., liquefied natural gas, has characteristics of large heat value, high performance, and the like. In recent years, LNG has been the preferred fuel for many countries and is growing at a high rate of about 12% per year, becoming one of the most rapidly growing energy sources worldwide. Because LNG can bring very obvious comprehensive benefit, in the transportation industry, the popularization of LNG tender tubes has become a great trend. Firstly, compared with a fuel vehicle, the vehicle using the LNG can reduce the emission of harmful gas by more than 90 percent; secondly, the price of LNG is lower than that of gasoline and diesel oil, so that the use cost can be greatly reduced; and LNG purity is high, combustion is sufficient, carbon deposition is not generated, abrasion of parts can be effectively reduced, and service life of the engine is prolonged.

The combustible gas leakage alarm is a gas leakage detection alarm instrument, and is applied to fuel vehicles (buses and buses) such as vehicle-mounted products (CNG, PNG, LNG) and the like, when combustible or toxic gas in the environment is leaked, and when the combustible gas leakage alarm detects that the gas concentration reaches a critical point set by an explosion or toxic alarm, the combustible gas leakage alarm can send out an alarm signal to remind of taking safety measures.

When the detector is applied to a vehicle-mounted electrical appliance product, the environment of the detector mainly comprises a gas storage bottle position, a gas filling port, a pressure valve and an engine bin on a vehicle, each monitoring point is mainly controlled, the detector is installed in a place where combustible gas is most prone to leakage, a core component of the detector is a built-in combustible gas sensor, and the sensor monitors the concentration of gas in the air. The detector converts the gas concentration that the sensor detected into the signal of telecommunication, transmits the controller through the cable, and gas concentration is higher, and the signal of telecommunication is stronger, and when gas concentration reached or exceeded the alarm point that alarm controller set up, alarm signal was sent to the alarm.

Most of embedded alarms are fixed by clamping structures, the clamping structures are movably designed on the wall surface of the shell, certain gaps can be reserved at the positions of the movable clamping structures, static electricity can strike the circuit board through the gaps, and the static electricity anti-interference capability is difficult to achieve.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: in order to solve the problem, the utility model provides a combustible gas leakage alarm device of electrostatic protection, it is provided with U type groove structure, can effectual isolated static to MCU's on the detection circuitry board interference, improved the static anti jamming performance of alarm.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the combustible gas leakage alarm with electrostatic protection comprises:

the device comprises a shell, a fixing device and a clamping device, wherein an accommodating cavity is formed in the shell, the accommodating cavity is internally provided with the fixing device, and at least one pair of opposite side walls of the shell are respectively provided with a movable clamping structure penetrating through the side walls;

the detection circuit board is fixedly connected in the accommodating cavity through the fixing device;

the anti-static partition plate is buckled on the side wall of the shell, corresponds to the movable clamping structure in position and is used for sealing an opening formed on the side wall for arranging the movable clamping structure;

and the rear side plate is clamped on the back surface of the shell.

Preferably, the anti-static partition plate comprises a semi-closed U-shaped groove, and the semi-closed U-shaped groove is formed in the upper end and the lower end of the detection circuit board.

Preferably, the fixing device comprises fixing columns, and the fixing columns are arranged at four corners of the accommodating cavity.

Preferably, the four corners of the detection circuit board are provided with limiting holes, the limiting holes are used for the corresponding positions of the fixing columns to penetrate through, and the detection circuit board is embedded between the semi-closed U-shaped grooves.

Preferably, a groove is formed in the front face of the shell, through holes of the indicating lamps on the detection circuit board are correspondingly formed in the groove, a panel label is arranged in the groove, and indicating lamp holes corresponding to the through holes are formed in the panel label.

Preferably, the device further comprises a clamping opening, and the clamping opening is communicated with the upper inner wall surface and the lower inner wall surface of the accommodating cavity.

Preferably, the rear side plate is provided with an elastic clamping structure, at least part of the elastic clamping structure is clamped on the clamping opening, and the elastic clamping structure is clamped on the part of the clamping opening through the clamping opening to push the part of the elastic clamping structure clamped on the clamping opening, so that the clamping state of the elastic clamping structure and the clamping opening is relieved.

Preferably, the elastic clamping structure is a clamping hook, the clamping hook comprises an elastic connecting portion and a hooking portion, the elastic connecting portion is connected with the elastic connecting portion, the elastic connecting portion is convexly arranged on the upper surface and the lower surface of the rear side plate, the hooking portion is connected with the elastic connecting portion and deviates from one side of the rear side plate, and the hooking portion faces the clamping opening and extends and is arranged on the inner wall surface of the clamping opening.

Preferably, the upper surface of the hooking part is inclined upwards from the outside to the inside of the shell.

Preferably, the elastic clamping structure is an elastic arm, at least part of the elastic arm is clamped on the clamping opening, the elastic arm is clamped on the part of the clamping opening, which is convexly provided with an elastic bulge, the peripheral arm of the clamping opening is provided with a clamping groove, and the elastic bulge is clamped on the clamping groove.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses be provided with semi-closed U type groove structure, can effectual isolated static to MCU's on the detection circuit board interference, solved MCU because of the problem that static restarted, improved the static anti-interference ability of alarm.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic view of a three-dimensional structure of a combustible gas leakage alarm with electrostatic protection according to an embodiment of the present invention.

Fig. 2 is an explosion diagram of the overall structure of the combustible gas leakage alarm with electrostatic protection according to the embodiment of the present invention.

Fig. 3 is an explosion diagram of another overall structure of the combustible gas leakage alarm with electrostatic protection according to the embodiment of the present invention.

Fig. 4 is a front view of the combustible gas leakage alarm with electrostatic protection according to the embodiment of the present invention.

Fig. 5 is a sectional view of a combustible gas alarm with electrostatic protection according to an embodiment of the present invention.

Fig. 6 is a B-B cross-sectional view of a combustible gas alarm with electrostatic protection according to an embodiment of the present invention.

In the figure: 1. a housing; 2. detecting the circuit board; 3. an anti-static separator; 4. clamping a port; 5. an elastic clamping structure; 501. an elastic connection portion; 502. a hooking part; 6. a movable clamping structure; 7. a rear side plate; 8. a vent hole; 9. a panel label; 10. a through hole; 11. and (4) a fixing device.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the embodiments of the present invention are described in further detail below, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 6, the present embodiment provides a combustible gas leakage alarm with electrostatic protection, including:

the device comprises a shell 1, wherein an accommodating cavity is formed in the shell 1, a fixing device 11 is arranged in the accommodating cavity, and at least one pair of opposite side walls of the shell 1 are respectively provided with a movable clamping structure 6 penetrating through the side walls;

the detection circuit board 2 is fixedly connected in the accommodating cavity through the fixing device 11;

the anti-static partition plate 3 is buckled on the side wall of the shell 1, corresponds to the movable clamping structure 6 in position and is used for sealing an opening formed on the side wall for arranging the movable clamping structure 6;

and the rear side plate 7 is clamped on the back surface of the shell 1.

Specifically, casing 1 roughly is the rectangle form, including the left side board, preceding curb plate, right side board, the posterior lateral plate 7 that connect gradually, the left side board preceding curb plate the right side board and posterior lateral plate 7 encloses the cavity that closes formation a rectangle form, casing 1 is still including roof, bottom plate, the roof the bottom plate is the rectangle form, four sides of roof respectively with the left side board preceding curb plate the right side board and the last side of posterior lateral plate 7 is connected, the four sides of bottom plate respectively with the left side board preceding curb plate the right side board and the lower side of posterior lateral plate 7 is connected, can understand be that the left side board preceding curb plate the right side board the roof and bottom plate integrated into one piece is in order to guarantee the stability of casing 1 structure.

The roof the corresponding position of bottom plate sets up a pair of activity card at least and establishes structure 6, sets up two pairs under the general condition, the activity card is established structure 6 and is used for the utility model discloses take the fixed mounting of electrostatic protection's combustible gas leakage alarm, its structure and principle with structure 5 is established to the elasticity card is the same, be provided with on the posterior lateral plate 7 and transversely run through posterior lateral plate 7's air vent 8, space in the casing 1 passes through air vent 8 and external intercommunication, so that air and external air phase circulation in the casing 1 have promoted the sensitivity of detecting circuit board 2 to combustible gas leakage response, and then have promoted the detection efficiency of combustible gas leakage alarm, can also be right the inside temperature of casing 1 cools down, can prolong electronic component's life on detecting circuit board 2.

The utility model discloses be provided with and prevent static baffle 3, prevent that static baffle 3 can be semi-closed U type groove structure, can effectual isolated static to MCU's on the detection circuit board 2 interference, solved MCU because of the problem that static restarted, improved the static anti jamming performance of alarm.

The utility model discloses an in the embodiment, prevent that static baffle 3 includes semi-closed U type groove, semi-closed U type groove is located detect the upper and lower both ends of circuit board 2.

It should be noted that, in order to reduce the interference of static electricity on the installation of the detection circuit board 2, the anti-static partition plate 3 may be provided with two pairs of half-closed U-shaped grooves, the anti-static partition plate 3 may be correspondingly disposed on the inner wall surfaces of the upper and lower surfaces of the housing 1, and the anti-static partition plate 3 may not contact with the detection circuit board 2.

In addition, fixing device 11 includes the fixed column, the fixed column is located hold the four corners position in chamber.

And/or, the fixing device 11 is not limited to a fixing column, and the fixing column includes a first fixing piece and a second fixing piece, the length of the first fixing piece is longer than that of the second fixing piece, and the first fixing piece is located above the second fixing piece, it can be understood that the first fixing piece and the second fixing piece are integrally formed with the front side plate of the housing 1.

In this embodiment, the four corners of the detection circuit board 2 are provided with limiting holes, the limiting holes are used for the corresponding positions of the fixing columns to penetrate through, and the detection circuit board 2 is embedded between the semi-closed U-shaped grooves.

It should be noted that the connection mode between the detection circuit and the fixed column is not limited to a through connection, and for convenience, the detection circuit board 2 may be detached and installed, and an internal thread may be provided on the first fixing member, one end of a screw with a thread sequentially penetrates from one side of the detection circuit board 2 to the other side of the detection board and is connected to the internal thread in a matching manner, and an anti-static gasket may be sleeved at a contact position of the screw and the detection circuit board 2 to fix the detection circuit board 2.

In addition, a groove is formed in the front face of the shell 1, through holes 10 of the indicating lamps on the detection circuit board 2 are correspondingly formed in the groove, a panel label 9 is arranged in the groove, and indicating lamp holes corresponding to the through holes 10 are formed in the panel label 9.

In an embodiment of the present invention, the device further comprises a fastening opening 4, wherein the fastening opening 4 is communicated with the upper and lower inner wall surfaces of the accommodating cavity.

As shown in fig. 1-6, the rear side plate 7 is provided with an elastic fastening structure 5, at least a part of the elastic fastening structure 5 is fastened to the fastening opening 4, and the fastening opening 4 pushes the part of the elastic fastening structure 5 fastened to the fastening opening 4, so as to release the fastening state of the elastic fastening structure 5 and the fastening opening 4.

It can be understood that the elastic clamping structure 5 may be integrally formed with the rear side plate 7, or may be detachably connected to the rear side plate, in this embodiment, the elastic clamping structure 5 is integrally formed with the rear side plate 7, and a portion of the elastic clamping structure 5 clamped in the clamping opening 4 may slide along an opening direction of the clamping opening 4. Under the natural state, the elasticity card establish structure 5 with the card is established mouthful 4 cards and is established, will as needs detection circuit board 2 dismantles when getting off and clear up, passes through adopting people's hand or top pushing member the mouth 4 is established to the card, and will the elasticity card is established structure 5 court the top is pushed away in the casing 1, so that the elasticity card is established structure 5 and is broken away from the card is established mouthful 4, thereby removes the card establish the structure with the card that the mouth 4 was established to the card establishes the state, thereby will posterior lateral plate 7 splits out, in order to take out detection circuit board 2.

Preferably, the elastic clamping structure 5 is a clamping hook, the clamping hook comprises an elastic connecting portion 501 and a hooking portion 502 which are connected, the elastic connecting portion 501 is convexly arranged on the upper surface and the lower surface of the rear side plate 7, the hooking portion 502 is connected to the side, away from the rear side plate 7, of the elastic connecting portion 501, the hooking portion 502 faces the clamping opening 4, extends and is arranged on the inner wall surface of the clamping opening 4.

In an embodiment of the present invention, the upper surface of the hooking portion 502 is inclined upward from the outside of the housing 1.

So set up, the upper surface of colluding portion 502 with the card establishes the internal wall of mouth 4 and forms great operating space to maintenance worker's hand passes through this operating space, thereby pushes up the card establishes the structure, the operation of being convenient for.

It can be understood that, in a natural state, the elastic connection portion 501 drives the hooking portion 502 to hook into the fastening opening 4, when the hooking portion 502 is pushed, the elastic connection portion 501 elastically deforms, and after pushing is completed, the elastic connection portion 501 returns to a natural state, that is, the hooking portion 502 stays at a position hooked in the fastening opening 4.

Preferably, the elastic clamping structure 5 is an elastic arm, at least part of the elastic arm is clamped on the clamping port 4, the elastic arm is clamped on the part of the clamping port 4, which is convexly provided with an elastic bulge, the peripheral arm of the clamping port 4 is provided with a clamping groove, and the elastic bulge is clamped on the clamping groove.

In this embodiment, the elastic arm is roughly a bar shape, the elastic protrusion is arranged along the periphery of the elastic arm, it can be understood that the clamping groove is arranged along the periphery of the clamping opening 4, so that the elastic protrusion and the groove have a larger clamping area, and the stability of the clamping opening 4 is improved when the elastic arm is clamped.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used merely for convenience in description and simplicity in operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. The utility model provides a take electrostatic protection's combustible gas leakage alarm which characterized in that includes:

the device comprises a shell (1), wherein an accommodating cavity is formed in the shell (1), a fixing device (11) is arranged in the accommodating cavity, and at least one pair of opposite side walls of the shell (1) are respectively provided with a movable clamping structure (6) penetrating through the side walls;

the detection circuit board (2) is fixedly connected into the accommodating cavity through the fixing device (11);

the anti-static partition plate (3) is buckled on the side wall of the shell (1), corresponds to the movable clamping structure (6) in position and is used for sealing an opening formed on the side wall for arranging the movable clamping structure (6);

the rear side plate (7), the rear side plate (7) card is located the back of casing (1).

2. The combustible gas leakage alarm with electrostatic protection as claimed in claim 1, wherein the anti-static partition (3) comprises a semi-closed U-shaped groove, and the semi-closed U-shaped groove is arranged at the upper end and the lower end of the detection circuit board (2).

3. The combustible gas leakage alarm with electrostatic protection as claimed in claim 2, characterized in that the fixing means (11) comprise fixing posts, which are arranged at four corners of the accommodating chamber.

4. The combustible gas leakage alarm with electrostatic protection as claimed in claim 3, wherein the detection circuit board (2) is provided with limiting holes at four corners, the limiting holes are used for the corresponding positions of the fixing posts to penetrate through, and the detection circuit board (2) is embedded between the semi-closed U-shaped grooves.

5. The combustible gas leakage alarm with electrostatic protection as claimed in claim 4, wherein a groove is provided on the front face of the housing (1), through holes (10) of the indicator lamps on the detection circuit board (2) are correspondingly provided on the groove, a panel label (9) is provided in the groove, and an indicator lamp hole corresponding to the through hole (10) is provided on the panel label (9).

6. The combustible gas leakage alarm with electrostatic protection as claimed in claim 5, further comprising a clamping opening (4), wherein the clamping opening (4) is communicated with the upper and lower inner wall surfaces of the accommodating cavity.

7. The combustible gas leakage alarm with electrostatic protection as claimed in claim 6, wherein the rear side plate (7) is provided with an elastic clamping structure (5), at least part of the elastic clamping structure (5) is clamped in the clamping opening (4), and the elastic clamping structure (5) is clamped in the part of the clamping opening (4) through the clamping opening (4) to release the clamping state of the elastic clamping structure (5) and the clamping opening (4).

8. The combustible gas leakage alarm with electrostatic protection as claimed in claim 7, wherein the elastic clamping structure (5) is a clamping hook, the clamping hook comprises an elastic connecting portion (501) and a hooking portion (502) which are connected, the elastic connecting portion (501) is convexly arranged on the upper surface and the lower surface of the rear side plate (7), the hooking portion (502) is connected to one side of the elastic connecting portion (501) departing from the rear side plate (7), and the hooking portion (502) extends towards the clamping opening (4) and is arranged on the inner wall surface of the clamping opening (4).

9. The combustible gas leakage alarm with electrostatic protection of claim 8, characterized in that the upper surface of the hooking part (502) is inclined upwards from the outside to the inside of the shell (1).

10. The combustible gas leakage alarm with electrostatic protection as claimed in claim 9, wherein the elastic clamping structure (5) is an elastic arm, at least part of the elastic arm is clamped in the clamping opening (4), the part of the elastic arm clamped in the clamping opening (4) is provided with an elastic protrusion in a protruding manner, the peripheral arm of the clamping opening (4) is provided with a clamping groove, and the elastic protrusion is clamped in the clamping groove.