CN217765231U - Flame detector - Google Patents

Abstract

The application relates to a flame detector, a sun-shading part can be elastically clamped on a shell through the elastic performance of the sun-shading part to realize first fixing, and further realize second fixing through the matching of a bulge and a sliding chute, and meanwhile, a user can apply external force to the sun-shading part to rotate the sun-shading part according to different sun-shading requirements, so that the clamping position of the sun-shading part on the shell can be simply, conveniently and flexibly adjusted, and the sun-shading and light-shading angle can be flexibly adjusted; further again, after rotating the adjustment to required joint position, the sunshade spare can carry out the third through the double faced adhesive tape and say fixedly, effectively solves sunshade light-resistant problem under the different operating modes, and during the field installation, the connected mode of sunshade spare and casing elasticity joint need not the instrument and assists, dismantles and the installation all comparatively simple and easy.

Description

Flame detector

Technical Field

The application relates to the technical field of detectors, in particular to a flame detector.

Background

In the prior art, the shell of the sunshade and the shell of the detector are generally fixedly connected through screws, the fixed position is single, the dismounting is inconvenient, and the mounting position and the sunshade angle of the sunshade are difficult to flexibly adjust in combination with the field use working condition.

SUMMERY OF THE UTILITY MODEL

Based on this, there is a need for a flame detector.

A flame detector, comprising:

a housing;

the infrared detection assembly is arranged in the shell; and

have elastic sun-shading piece, sun-shading piece elasticity joint in the casing is used for the detection end sunshade of infrared detection subassembly.

So set up, the connected mode of sunshade piece and casing elasticity joint for the sunshade piece is dismantled and the installation is all comparatively simple and easy, and the user of service can be according to the sunshade demand of difference, and simple and convenient nimble ground is adjusted the joint position of sunshade piece on the casing, effectively solves the problem of sunshade light-resistant under the different work condition.

In one embodiment of the present invention, the housing includes a front cover and a rear shell fastened to each other, a gap is formed between an outer wall of the front cover and an inner wall of the rear shell, and the sun shielding member is elastically fastened in the gap.

So set up, during user of service can be directly inserts the clearance between protecgulum and the backshell with sunshade, the elasticity of sunshade self can make it block steadily and locate between protecgulum and the backshell for the card that whole installation is more simple and convenient and easily adjust sunshade is established the position.

The utility model discloses in one of them embodiment, the flame detector still includes rotates coupling assembling, rotate coupling assembling including joint portion and cooperation portion, joint portion set up in hide the sun piece, the cooperation portion set up in the casing, joint portion be used for with cooperation portion joint each other to can follow under the exogenic action casing circumferential direction.

So set up, can strengthen the stability of sunshade spare in the clearance, can enough rotate its mounted position of adjustment and sunshade angle the time can be difficult again with the casing separation, improve the stability of sunshade spare.

The utility model discloses one of them embodiment, joint portion is protruding to be located hide the arch of sun spare, cooperation portion is for following the spout that casing circumference was seted up, protruding with spout interference fit, the arch is used for following under the exogenic action the spout slides, in order to adjust hide sun spare is in position on the casing.

So set up, when no external force is used, the position of sunshade spare can be fixed to the interference fit of arch and spout, makes sunshade spare keep firm, and when needs adjustment sunshade angle, user of service can apply external force to sunshade spare, makes the arch slide along the spout, and then changes sunshade spare position on the casing.

In one embodiment of the present invention, the protrusion is disposed on a side of the sunshade close to the front cover, and the sliding groove is disposed on an outer wall of the front cover; and/or the sliding groove is a groove which is annularly arranged on the circumferential direction of the shell.

So set up, the sunshade can rotationally connect in the protecgulum, and the spout sets up in the recess of casing circumference for the annular can make the sunshade carry out the rotation of arbitrary angle, strengthens sunshade position adjustable scope to adapt to multiple sunshade demand.

In one embodiment of the present invention, the protrusion is a segment-shaped protruding column, the sliding groove includes a bottom wall and two side walls located at two sides of the bottom wall, two of the side walls have a planar structure, and the segment-shaped protruding column is in point-shaped abutment with the two side walls.

So set up, two lateral wall punctiform butts of segmental sphere shape projection and spout can reduce frictional force, and the segmental sphere shape projection of being convenient for slides in the spout, and the punctiform butt can guarantee again simultaneously between segmental sphere shape projection and the spout still can guarantee the steadiness of sunshade piece when no exogenic action, avoids sunshade piece sunshade angle to take place the skew.

In one embodiment of the present invention, the bottom wall has a planar structure, and the segmental boss abuts against the bottom wall in a dotted manner.

So set up, can further increase the butt power of arch and spout, make sun-shading spare more firm on the casing, and can guarantee simultaneously that the arch still can slide along the spout under the exogenic action.

In one embodiment of the present invention, the joint portions are provided with four, every two, the joint portions are a group and two groups, and the joint portions are symmetrically disposed with the central axis of the sun shading member as the central axis.

So set up, can further increase the joint strength who hides between sun spare and the casing, a plurality of joint portions can avoid rotating in-process joint portion fracture or damage simultaneously

The utility model discloses in one of them embodiment, sun-shading spare includes interconnect's fixed part and sunshade, fixed part elastic clamping in the casing, sunshade protrusion in the casing, just sun-shading part's width is followed and is kept away from the direction of casing is degressive gradually.

So set up, the fixed part is used for with casing elastic clamping, and sunshade portion can bulge the casing and play the sunshade effect, and sunshade portion width is degressive along keeping away from the casing direction gradually and can be when playing the sunshade effect, avoids sheltering from the light of casing both sides, guarantees the detection accuracy of detector.

The utility model discloses one of them embodiment, the flame detector still includes the bonding piece, the bonding piece set up in hide sun relatively close to one side of casing, be used for with hide sun with the casing bonding is fixed.

So set up, sunshade position adjustment confirms the back, and the piece that bonds can further strengthen sunshade's steadiness, makes it be connected inseparabler firm with the casing, is difficult for droing or removing, guarantees that the sunshade angle is unchangeable.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a first embodiment of a flame detector provided herein;

FIG. 2 is a schematic diagram of an exploded view of the flame detector of FIG. 1;

FIG. 3 is a schematic view of a front cover of the present application from a first perspective;

FIG. 4 is a schematic structural view of a front cover of the present application from a second perspective;

FIG. 5 is an enlarged schematic view of the portion X in FIG. 4;

FIG. 6 is a schematic view of a first perspective view of a sun shade according to the present application;

FIG. 7 is a schematic view of a second perspective view of the sun shade of the present application;

FIG. 8 is a schematic view of a sun shade according to the present application from a third perspective;

fig. 9 is a fourth perspective structural view of the sun shade of the present application;

FIG. 10 is a schematic view of the overall structure of a second embodiment of a flame detector provided herein;

FIG. 11 is a schematic diagram of an exploded view of the flame detector of FIG. 10;

FIG. 12 is a schematic view of the flame detector of FIG. 10 from a first perspective;

FIG. 13 is a schematic view of the flame detector of FIG. 10 from a second perspective.

Reference numerals: 100. a flame detector; 10. a housing; 101. a gap; 11. a front cover; 112. a glass window; 12. a rear housing; 121. a barrel; 122. a rear cover; 20. a sun shade member; 21. a sunshade portion; 22. a fixed part; 23. a reinforcing part; 30. rotating the connecting assembly; 31. a clamping part; 32. a fitting portion; 301. a protrusion; 302. a chute; 3021. a side wall; 3022. a bottom wall; 3023. an arcuate transition wall; 40. an adhesive member; 50. an infrared detection assembly.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiment in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and therefore the application is not limited to the specific embodiments disclosed below.

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 intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used in the description of the present application are for illustrative purposes only and do not represent the only embodiments.

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 to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature or that the first feature is in indirect contact with the second feature via an intermediate medium. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Among the prior art, the sunshade generally is fixed in preceding shell top through the screw, and fixed position is comparatively single, and use tools dismantles the sunshade also very inconvenient, is difficult to combine the site operation operating mode to carry out nimble adjustment to the mounted position and the sunshade angle of sunshade.

In view of this, the present application provides a flame detector 100 for use in the field of fire detection.

Referring to fig. 1 and fig. 1, fig. 1 is a schematic structural diagram of a first embodiment of a flame detector 100 provided in the present application. This flame detector 100 includes casing 10, infrared detection subassembly 50 and has elastic sunshade spare 20, and infrared detection subassembly 50 installs in casing 10, and sunshade spare 20 elastic clamping is in casing 10 for the detection end sunshade for infrared detection subassembly 50. According to the configuration, the utility model provides a flame detector 100, the connected mode of sunshade 20 and casing 10 elasticity joint can make the dismantlement and the installation of sunshade 20 all comparatively simple and easy, and the user of service can be according to the sunshade demand of difference, adjusts the joint position of sunshade 20 on casing 10 portably nimble, effectively solves the problem of sunshade light-resistant under the different work condition.

It can be understood that, in the present application, the sunshade 20 is elastically clamped to the housing 10, which may be elastically clamped by an abutting force applied to the housing 10 by the elastic performance of the sunshade 20 (see fig. 1 and 2 in the present application, and fig. 1 and 2 are both structural schematic diagrams of a first embodiment of the flame detector 100 in the present application, where fig. 2 is an explosion structural schematic diagram of the flame detector 100 in fig. 1), or may be elastically clamped by a clamping force applied to the housing 10 by the elastic performance of the sunshade 20 (see a second embodiment of the present application, fig. 10 to 13, and fig. 10 is an overall structural schematic diagram of a second embodiment of the flame detector 100 in the present application, fig. 11 is an explosion structural schematic diagram of the flame detector 100 in fig. 10, fig. 12 is a structural schematic diagram of the flame detector 100 in fig. 10 at a first viewing angle, and fig. 13 is a structural schematic diagram of the flame detector 100 in fig. 10 at a second viewing angle). In other words, the sunshade 20 may be elastically pressed against the gap of the housing 10, or may be directly elastically clamped on the outer wall of the housing 10, as long as the sunshade 20 can be stably connected with the housing 10.

Preferably, in the present embodiment, the sunshade 20 is preferably made of hot-dip galvanized steel plate, which has excellent performance, good sunshade effect, long service life, and is not easy to elastically lose efficacy or generate fracture phenomenon; it can be understood, in other embodiments of this application, as long as can guarantee that sunshade part 20 can elastic clamping in the casing, sunshade part 20 also can adopt other sheet metal components to make, perhaps other elasticity is good can the plastics of sunshade light-resistant make, and it is not repeated here to add one.

Referring to fig. 1 and fig. 2 again, in the first embodiment of the present invention, the housing 10 includes a front cover 11 and a rear shell 12 that are fastened to each other, a gap 101 is formed between an outer wall of the front cover 11 and an inner wall of the rear shell 12, and the sunshade 20 is elastically clamped in the gap 101. With the arrangement, a user can directly insert the sunshade 20 into the gap 101 between the front cover 11 and the rear shell 12, and the sunshade 20 can be stably clamped between the front cover 11 and the rear shell 12 due to the elasticity of the sunshade 20, so that the sunshade is more conveniently and easily installed and the clamping position of the sunshade 20 is easily adjusted.

It is understood that in other embodiments, the sunshade 20 may also be directly and elastically fastened to the front cover 11 or the rear cover 122, for example, a gap capable of fastening the sunshade 20 may be formed on the front cover 11 or the rear cover 122.

Referring to fig. 1 again, in the present embodiment, a glass window 112 is disposed in the middle of the front cover 11, the rear shell 12 includes a cylinder 121 and a rear cover 122, the infrared detection assembly 50 is installed in the cylinder 121, and a detection end of the infrared detection assembly 50 faces and is tightly attached to the glass window 112. In other words, in the embodiment, the housing 10 is composed of a barrel 121 having front and rear openings, and a front cover 11 and a rear cover 122 buckled at the front and rear of the barrel 121 and having openings at two sides, the sunshade 20 is located at the side of the front cover 11, and the projection of the sunshade 20 under the sun irradiation can cover the glass window 112 (the projection direction is related to the position and sunshade angle of the sunshade 20), so as to shade the detection end of the infrared detection assembly 50.

Preferably, the front cover 11 and the rear cover 122 are tightly engaged with the barrel 121 through threads, the front cover 11 and the infrared detection assembly 50 of the front cover 11 can be fixed in the barrel 121 through bolts or the like, and the glass window 112 is adhered to the middle of the front cover 11 through glue.

Referring to fig. 3 to 9, fig. 3 is a schematic structural view of a front cover 11 according to the present application from a first perspective; FIG. 4 is a schematic structural diagram of a second perspective view of the front cover 11 of the present application; FIG. 5 is an enlarged schematic view of the portion X in FIG. 4;

fig. 6 is a schematic view of the sun shade 20 according to the present application; fig. 7 is a schematic view of the sun shade 20 according to the present application from a second perspective; fig. 8 is a schematic structural view of a third viewing angle of the sun shade 20 of the present application; fig. 9 is a schematic structural diagram of a fourth viewing angle of the sun shade 20 of the present application.

Preferably, in this embodiment, the flame detector 100 further includes the rotating connection assembly 30, and the rotating connection assembly 30 includes the clamping portion 31 and the fitting portion 32, and the clamping portion 31 is disposed on the sun shading member 20, and the fitting portion 32 is disposed on the housing 10, and the clamping portion 31 is used for clamping with the fitting portion 32, and can rotate along the circumferential direction of the housing 10 under the external force. So set up, can strengthen the stability of sunshade 20 in clearance 101 when not influencing freely adjusting sunshade 20 card and establishing the position, make sunshade 20 enough rotate and adjust its mounted position and sunshade angle, again can be difficult for separating with casing 10.

Referring to fig. 4 and fig. 6 again, preferably, in the present embodiment, the fastening portion 31 is a protrusion 301 protruding from the sunshade 20, the matching portion 32 is a sliding slot 302 formed along the circumferential direction of the housing 10, the protrusion 301 is in interference fit with the sliding slot 302, and the protrusion 301 is used for sliding along the sliding slot 302 under an external force to adjust the position of the sunshade 20 on the housing 10. So set up, when no exogenic action, the position of sunshade piece 20 can be fixed to protruding 301 and spout 302's interference fit, makes sunshade piece 20 keep firm, and when needs adjustment sunshade angle, user of service can exert external force to sunshade piece 20, makes protruding 301 slide along spout 302, and then changes sunshade piece 20 position on casing 10, satisfies the sunshade demand under the different use condition.

It can be understood that the protrusion 301 and the sliding groove 302 are used for cooperating, and the positions of the protrusion 301 and the sliding groove 302 can be changed, in other words, in other embodiments, the clamping portion 31 can also be the sliding groove 302 circumferentially opened on the sun shading member 20, the cooperating portion 32 is the protrusion 301 convexly disposed on the housing 10, the protrusion 301 is in interference fit with the annular sliding groove 302, and the protrusion 301 is used for sliding along the annular sliding groove 302 under the action of external force to adjust the position of the sun shading member 20 on the housing 10.

Further, preferably, in the present embodiment, the protrusion 301 is disposed on a side of the sunshade 20 close to the front cover 11, and the sliding groove 302 is opened on an outer wall of the front cover 11; and the sliding groove 302 is a groove annularly arranged on the circumference of the shell 10. With such an arrangement, the sunshade element 20 can be rotatably connected to the front cover 11, and the sliding groove 302 is annularly formed in the circumferential groove of the housing 10, so that the sunshade element 20 can rotate 360 degrees in the front cover 11, and the position adjustable range of the sunshade element 20 is enlarged to meet various sunshade requirements.

It is understood that, in other embodiments, the protrusion 301 may also be disposed on a side of the sunshade 20 away from the front cover 11, and the annular sliding groove 302 is disposed on an inner wall of the rear shell 12, that is, in other embodiments, the sunshade 20 is rotatably connected to the rear shell 12, in other words, the fastening portion 31 may be disposed on a side of the sunshade 20 close to an inner wall of the rear shell 12, or may be disposed on a side of the sunshade 20 close to an outer wall of the front shell, and the corresponding engaging portion 32 on the housing 10 may be correspondingly disposed on the rear shell 12 or the front cover 11 according to a disposition position of the fastening portion 31, as long as the engaging action between the fastening portion 31 and the engaging portion 32 is not affected.

It can be understood that, in order to make the position where the sunshade 20 can be disposed more flexible, in the present invention, the sliding groove 302 is an annular groove circumferentially opened on the housing 10, but in other embodiments, the sliding groove 302 can also be an arc groove, and the sliding groove 302 can be one segment or multiple segments.

Further, preferably, in the present embodiment, the sun-shading part 20 is provided as one, and one connecting rotating component is correspondingly provided, it can be understood that, in other embodiments, according to different working conditions and use scenes, the sun-shading part 20 may also be provided as two or more than three, the size and the sun-shading area of the specific sun-shading part 20 may be selected according to requirements, and a plurality of rotating connecting components 30 may also be provided corresponding to the number of the sun-shading parts 20.

Preferably, in this embodiment, in order to avoid the insufficient overall sunshade angle and thus the small area, the sunshade angle of the sunshade 20 in the present application is set to 200 degrees, so as to effectively improve the anti-interference capability to the multi-direction strong light source, and effectively overcome the situations of false alarm and failure of alarm under the condition of light interference in the detection process.

Referring to fig. 5 and fig. 6 again, preferably, in the present embodiment, the protrusion 301 is a segment-shaped convex pillar, the sliding slot 302 includes a bottom wall 3022 and two side walls 3021 located at two sides of the bottom wall 3022, the two side walls 3021 have a planar structure, and the segment-shaped convex pillar is in dotted contact with the two side walls 3021. So set up, the segmental sphere shape projection can reduce frictional force with two lateral wall 3021 punctiform butts of spout 302, and the segmental sphere shape projection of being convenient for slides in spout 302, and the punctiform butt can guarantee again simultaneously between segmental sphere shape projection and the spout 302 still can guarantee to hide the steadiness of sun part 20 when no external force effect, avoids hiding sun part 20 sunshade angle and takes place the skew.

Further, preferably, the bottom wall 3022 also has a planar structure, and the segment-shaped convex pillar is in point-shaped contact with the bottom wall 3022. So set up, can strengthen the elasticity atress of sunshade, further increase protruding 301 and spout 302's butt power, make sunshade 20 more firm on casing 10, and can guarantee simultaneously that protruding 301 still can slide along spout 302 under the exogenic action.

It is understood that in other embodiments, the protrusion 301 may also be a segment-shaped convex column; the two side walls 3021 and the bottom wall 3022 of the sliding chute 302 may not have a planar structure, and may have an arc-shaped structure. In other words, as long as the interference fit between the protrusion 301 and the sliding slot 302 can be ensured, and the protrusion 301 can slide along the circumferential direction of the sliding slot 302 under the action of external force, the shape of the protrusion 301 and the structures of the side wall 3021 and the bottom wall 3022 of the sliding slot 302 can be set as required.

Referring again to fig. 5, further, the chute 302 further includes an arc-shaped transition wall 3023 between the side wall 3021 and the bottom wall 3022, and the arc-shaped transition wall 3023 can make the transition between the side wall 3021 and the bottom wall 3022 smoother and less prone to water accumulation or dust accumulation.

Referring to fig. 6 again, preferably, in the present embodiment, four clamping portions 31 are provided, each two clamping portions 31 form a group, and the two groups of clamping portions 31 are symmetrically arranged with the central axis of the sunshade 20 as the central axis. So set up, can further increase the joint strength who hides between sun piece 20 and the casing 10, a plurality of joint portions 31 set up the atress that can impartial simultaneously in groups of axial symmetry, avoid rotating in-process joint portion 31 and appear damaging. It is understood that in other embodiments, the number and the arrangement position of the clamping portions 31 can be freely selected according to the requirement, and are not limited herein.

Referring to fig. 7 again, preferably, in the present embodiment, the sunshade 20 includes a fixing portion 22 and a sunshade portion 21 connected to each other, the fixing portion 22 is elastically clamped to the housing 10, the sunshade portion 21 protrudes from the housing 10, and the width of the sunshade portion 21 gradually decreases along a direction away from the housing 10. So set up, fixed part 22 is used for with casing 10 elastic clamping, and sunshade 21 can bulge casing 10 and play the sunshade effect, and sunshade 21 width is followed and is kept away from casing 10 direction and progressively decreased gradually and can be when playing the sunshade effect, avoids sheltering from the light of casing 10 both sides, guarantees the detection accuracy of detector. In other words, the widths of the sunshade portion 21 along the central axis thereof toward the two sides gradually decrease in an equal gradient manner, preferably, the width at the central axis is widest, and the two sides gradually narrow can avoid shielding the light rays at the two sides of the transparent window, thereby avoiding affecting the detection accuracy of the detection end.

Referring to fig. 6, 7 and 9 again, preferably, in the present embodiment, the flame detector 100 further includes an adhesive member 40, and the adhesive member 40 is disposed on a side of the sunshade member 20 relatively close to the housing 10, and is used for adhering and fixing the sunshade member 20 and the housing 10. So set up, sunshade 20 position adjustment confirms the back, and bonding 40 can further strengthen sunshade 20's steadiness, makes it be connected inseparabler firm with casing 10, is difficult for droing or removing, guarantees that the sunshade angle is unchangeable. Preferably, in the present embodiment, the bonding member 40 is a double-sided tape, one side of the double-sided tape is attached to the sun-shielding member 20, and the other side is attached to the casing 10, and preferably, in the present embodiment, the other side of the double-sided tape is used for bonding the outer wall of the front cover 11, it can be understood that, in other embodiments, one side of the double-sided tape may be attached to one side of the sun-shielding member 20 close to the inner wall of the rear cover 122, and the other side is used for bonding the inner wall of the rear cover 122.

Referring to fig. 7 again, preferably, in the present embodiment, the sunshade 20 further includes a reinforcing portion 23, and preferably, the reinforcing portion 23 is located on a side of the fixing portion 22 away from the sunshade portion 21, that is, the sunshade 20 includes the sunshade portion 21, the fixing portion 22 and the reinforcing portion 23 which are connected in sequence, the sunshade portion 21, the fixing portion 22 and the reinforcing portion 23 are integrally formed, and the adhesive member 40 is attached to the reinforcing portion 23. It is understood that in other embodiments, the reinforcement portion 23 may be located between the sunshade portion 21 and the fixing portion 22, as long as the snap-fit fixing of the sunshade 20 and the bonding function of the bonding member 40 are not affected.

Referring to fig. 10 to 13, the present application further provides a second embodiment of the flame detector, the first embodiment and the second embodiment have the same inventive concept and most of the same structure, except that in the second embodiment, there is no gap 101 between the front cover 11 and the rear shell 12 of the housing 10, the outer walls of the front cover 11 and the rear shell 12 are flush after they are screwed together, and the sunshade 20 is directly clamped on the outer wall of the front cover 11 by its own elasticity, in other words, in the second embodiment of the present application, the diameter of the sunshade 20 after molding or the distance between its two ends is slightly smaller than the diameter of the front cover 11, so that the sunshade 20 can apply a clamping force to the outer wall of the front cover 11 by its own elasticity to elastically clamp the sunshade 20 to the housing 10. The utility model provides a flame detector's second embodiment, sunshade 20 elastic joint in casing 10's outer wall, can be convenient for the user to operate rotation coupling assembling 30, and then adjust the sunshade position that sunshade 20 hides fast safely.

The utility model provides a flame detector 100, sunshade 20 can be through self elasticity performance elasticity joint in casing 10 realize first fixed, further realize the second fixed through the cooperation of arch 301 and spout 302, and the user can exert external force to sunshade 20 according to the sunshade demand of difference simultaneously and make it rotate, simply and conveniently adjusts the joint position of sunshade 20 on casing 10 in a flexible way, and then adjusts sunshade light-resistant angle in a flexible way; still further, after rotating the adjustment to required joint position, sunshade 20 can carry out the third through the double faced adhesive tape and fix, effectively solves the problem of sunshade light-resistant under the different operating modes, and during the field erection, the connected mode of sunshade 20 and 10 elastic clamping of casing need not the instrument and assists, and it is all comparatively simple and easy to dismantle and install.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims (10)

1. A flame detector, comprising:

a housing;

the infrared detection assembly is arranged in the shell; and

have elastic sun-shading piece, sun-shading piece elasticity joint in the casing is used for the detection end sunshade of infrared detection subassembly.

2. The flame detector of claim 1, wherein the housing comprises a front cover and a rear shell, the front cover and the rear shell are fastened to each other, a gap is formed between an outer wall of the front cover and an inner wall of the rear shell, and the sun shade is elastically clamped in the gap.

3. The flame detector of claim 2, further comprising a rotating connection assembly, wherein the rotating connection assembly comprises a clamping portion and a matching portion, the clamping portion is arranged on the sun shielding member, the matching portion is arranged on the housing, and the clamping portion is used for being clamped with the matching portion and can rotate around the housing under the action of external force.

4. The flame detector according to claim 3, wherein the engaging portion is a protrusion protruding from the sun-shielding member, the engaging portion is a groove formed along a circumferential direction of the housing, the protrusion is in interference fit with the groove, and the protrusion is configured to slide along the groove under an external force to adjust a position of the sun-shielding member on the housing.

5. The flame detector of claim 4, wherein the protrusion is disposed on a side of the sun shield close to the front cover, and the sliding groove is opened on an outer wall of the front cover; and/or the presence of a catalyst in the reaction mixture,

the sliding groove is an annular groove arranged in the circumferential direction of the shell.

6. The flame detector of claim 4, wherein the protrusion is a segment-shaped protrusion, the sliding slot comprises a bottom wall and two side walls located at two sides of the bottom wall, the two side walls have a planar structure, and the segment-shaped protrusion is in dotted abutment with the two side walls.

7. The flame detector of claim 6, wherein the bottom wall has a planar configuration, and the knob-shaped boss is in point-like abutment with the bottom wall.

8. The flame detector according to claim 4, wherein the number of the engaging portions is four, two engaging portions are provided in one group, and two groups of the engaging portions are provided symmetrically with respect to a central axis of the sun shade.

9. The flame detector of any of claims 1-8, wherein the sun-shading member comprises a fixing portion and a sun-shading portion connected with each other, the fixing portion is elastically clamped to the housing, the sun-shading portion protrudes from the housing, and the width of the sun-shading portion gradually decreases in a direction away from the housing.

10. The flame detector of claim 9, further comprising an adhesive member disposed on a side of the sun shield relatively close to the housing for adhesively securing the sun shield to the housing.

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