CN218824735U - Detector - Google Patents

Abstract

The utility model discloses a detector, which comprises an outer front shell, a lens, an inner front shell and a rear shell, wherein the outer front shell forms a containing cavity with an opening, and the cavity wall of the containing cavity, which is far away from the opening, is provided with a lens hole; the lens comprises a lens part and a connecting part, the connecting part is annularly arranged on the periphery of the lens part, the lens part protrudes out of the lens hole, the inner front shell is arranged in the accommodating cavity and is connected with the cavity wall of the accommodating cavity, and at least part of the connecting part is positioned between the outer front shell and the inner front shell and is connected with at least one of the outer front shell and the inner front shell; the rear shell is connected with the edge of the inner front shell. The utility model discloses technical scheme's detector shell before increasing in the shell before the shell, through the structural strength of shell improvement equipment back before the interior, avoid taking place deformation for the shell is only used for fixed lens and interior preceding shell before the shell, and the lens hole structural space that needs to reserve all around is few, makes lens frame and complete machine size littleer in the outward appearance.

Description

Detector

Technical Field

The utility model relates to a detector technical field, in particular to detector.

Background

In the current detector structure, a lens is usually fixed in a space formed by a front shell and a rear shell, and a avoiding hole corresponding to the lens is formed in the front shell, so that external light enters the inside of the front shell and is detected. However, because the distance to be detected by the detector is relatively long and the lighting area of the lens is large, the hole required to be formed in the front shell is large, so that the structural strength loss of the front shell is large, deformation is easy to occur, and the stability of the whole structure is affected; if the volume of the front shell is increased, the overall size of the whole machine is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a detector aims at improving the bulk strength of detector and realizes the miniaturization.

To achieve the above object, the present invention provides a housing assembly comprising:

the lens holder comprises an outer front shell, a lens holder and a lens holder, wherein the outer front shell forms an accommodating cavity with an opening, and the wall of the accommodating cavity, which is far away from the opening, is provided with a lens hole;

the lens comprises a lens part and a connecting part, wherein the connecting part is annularly arranged on the periphery of the lens part, and the lens part protrudes out of the lens hole;

the inner front shell is arranged in the accommodating cavity and is connected with the cavity wall of the accommodating cavity, and at least part of the connecting part is positioned between the outer front shell and the inner front shell and is connected with at least one of the outer front shell and the inner front shell; and

a rear housing connected to an edge of the inner front housing.

In a possible embodiment of the present application, the detector further includes a sealing plate, the sealing plate is disposed on a surface of the rear shell facing the inner front shell and is connected to an edge of the inner front shell facing the rear shell in a sealing manner at a peripheral edge, and the inner front shell and the sealing plate enclose to form a waterproof cavity.

In a possible embodiment of the present application, a first waterproof rib is disposed between the inner front shell and the surface of the connecting portion, and the first waterproof rib is made of a flexible material.

In one possible embodiment of the present application, a second waterproof rib is provided at a peripheral edge of the sealing plate, an abutment inclined surface is formed at an edge of the inner front shell facing the rear shell, a base surface of the second waterproof rib is parallel to the abutment inclined surface, and a convex portion of the second waterproof rib abuts against the abutment inclined surface.

In a possible embodiment of the present application, the first waterproof rib is annular; and/or the second waterproof rib is annular.

In a possible embodiment of the present application, the first waterproof rib and the inner front shell are of an integrally formed structure.

In a possible embodiment of the present application, a flange is convexly disposed at a connection portion between the lens portion and the connection portion, and the flange is attached to and abutted against an opening edge of the lens hole.

In a possible embodiment of the present application, one of the cavity wall of the accommodating cavity and the outer surface of the connecting portion is provided with a male buckle, and the other is provided with a female buckle, and the connecting portion is connected to the outer front shell by the engagement of the female buckle and the male buckle;

and/or, two cavity walls opposite to the containing cavity are provided with limiting ribs, and two edges of the connecting part are clamped with the limiting ribs.

In a possible embodiment of the present application, one of the outer peripheral surface of the inner front shell and the inner wall surface of the accommodating cavity is provided with a groove, and the other one is provided with a buckle, and the buckle is clamped in the groove to connect the inner front shell and the outer front shell;

and/or one of the peripheral surface of the inner front shell and the cavity wall of the accommodating cavity is provided with a female spigot, the other one is provided with a male spigot, and the inner front shell and the outer front shell are limited through the matching of the female spigot and the male spigot.

In a possible embodiment of the present application, a dodging hole is formed in the middle of the inner front shell, a counter sink portion is connected to an edge of the dodging hole, the counter sink portion is concavely arranged in a direction from the lens to the rear shell, and a light passing hole is formed in the bottom of the counter sink portion;

and/or the surface of the rear shell is provided with a wire passing hole and/or a mounting hole.

The shell component of the technical proposal of the utility model comprises an outer front shell, an inner front shell, a lens and a rear shell, wherein the outer front shell, the inner front shell, the lens and the rear shell form a protective space by enclosing, and the front shell structure is divided into two parts, wherein, the outer front shell is used for fixing the lens and forming an outer frame of the lens; the lining structure of shell before interior preceding shell conduct outside, can improve the bulk strength of preceding shell, and then guarantees the structural stability of the detector after the equipment. Simultaneously, the at least part of connecting portion is located before the shell and in between the shell, and the space between shell and the connecting portion before shell and the pressfitting before the shell setting before in can also to reduce external rivers and get into preceding shell department in, improve water-proof effects. In addition, the inner front shell is connected with the rear shell and fixed with the outer front shell to fix the lens, and the outer front shell is only used for fixing the lens, so that the requirement on the structural strength is not high, and the structural space required to be reserved around the corresponding lens is small, so that the frame size of the lens is reduced in appearance, and the size of the whole machine is smaller.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of the detector of the present invention;

FIG. 2 is a transverse cross-sectional view of one embodiment of the detector shown in FIG. 1;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is a schematic structural view of an outer front shell of the detector shown in FIG. 1;

FIG. 6 is a schematic diagram of a lens of the detector shown in FIG. 1;

FIG. 7 is an enlarged view at C of FIG. 6;

FIG. 8 is a schematic diagram of the construction of the inner front shell of the probe shown in FIG. 1;

fig. 9 is a longitudinal cross-sectional view of an embodiment of the detector of the present invention;

FIG. 10 is an enlarged view taken at D in FIG. 9;

FIG. 11 is a schematic diagram of the structure of the electronic control assembly of the detector shown in FIG. 1;

FIG. 12 is a schematic view of the electrical control assembly of the detector of FIG. 1 mounted to the inner front shell;

FIG. 13 is a schematic diagram of the structure of the sealing plate and the back shell of the probe shown in FIG. 1.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, back, 8230; \8230;) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "secured" are to be construed broadly, and thus, for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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 addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a detector.

Referring to fig. 1, fig. 2 and fig. 6, in an embodiment of the present invention, the detector 100 includes an outer front shell 11, a lens 13, an inner front shell 15 and a rear shell 17, the outer front shell 11 forms an accommodating cavity 111 having an opening, and the accommodating cavity 111 is provided with a lens hole 113 away from the wall of the opening; the lens 13 comprises a lens part 131 and a connecting part 133, wherein the connecting part 133 is arranged around the periphery of the lens part 131, and the lens part 131 protrudes out of the lens hole 113;

the inner front shell 15 is arranged in the accommodating cavity 111 and connected with the cavity wall of the accommodating cavity 111, and at least part of the connecting part is positioned between the outer front shell and the inner front shell and connected with at least one of the outer front shell and the inner front shell; the rear case 17 is connected to the edge of the inner front case 15.

In this embodiment, the detector 100 may be a Passive infrared detector (PIR) 100, such as the detector 100 applied outdoors, or the detector 100 applied indoors.

It will be appreciated that the detector 100 includes a housing assembly 10 and an electronic control assembly disposed within the housing assembly 100. The housing assembly 10 includes an outer front housing 11, a lens 13, an inner front housing 15 and a rear housing 17, the outer front housing 11 is made of plastic, and is substantially a frame structure, and encloses to form an accommodating cavity 111 with an opening, and is provided with a lens hole 113, and the cross-sectional shape of the housing assembly may be a square structure with an opening on one side, or an arc structure with an opening on one side, and may be set according to actual requirements. Here, in order to meet the lighting requirement of the detector 100 and facilitate fixing, the cross-sectional shape of the front housing 11 is configured such that the front half is a semi-circular arc shape, the rear half is a rectangular shape, and a lens hole 113 is formed at the front semi-circular arc shape to avoid the lens 13 and receive the external infrared ray. The shape of the lens hole 113 may be square, circular, or other shapes, etc.

The lens 13 is substantially in the shape of an arc-shaped panel, and is made of high-density polyethylene, and can transmit infrared waves radiated from a human body. The lens 13 includes a lens portion 131 and a connecting portion 133, the lens portion 131 of the lens 13 penetrates through the lens hole 113 and is exposed outside the lens hole 113 to better collect the external infrared rays so as to detect the external environment, and the connecting portion 133 is disposed on the periphery of the lens portion 131 and is located in the accommodating cavity 111 to perform fixing and connecting functions. Here, in one embodiment, in order to achieve better fit between the lens 13 and the front housing 11, the cross-sectional shape of the periphery of the lens portion 131 matches the opening shape of the lens hole 113, and both are rectangular, so as to facilitate fixation; the lens portion 131 is an arc surface in the horizontal direction, and can better focus infrared light, thereby improving the light collection effect. And at least part of the connecting part 133 is positioned between the outer front shell 11 and the inner front shell 15, so that the connecting part is matched with the side surface of the inner front shell 15 and the side surface of the outer front shell 11, thereby realizing better attaching effect and ensuring waterproof performance and connecting performance. Here, the connecting portion 133 is selected to be arc-shaped plate-shaped, the corresponding front housing 11 is also arc-shaped plate-shaped, and the front end of the connecting portion 133 matches with the radian of the lens portion 131, so that smoothness transition is achieved, and the appearance is ensured.

The inner front shell 15 is also a frame structure, and the inner space thereof is used for installing the electronic control assembly 30. The side wall of the inner front case 15 is also formed in an arc plate shape so as to be fittingly press-fitted with the connecting portion 133 and the outer front case 11. The inner front shell 15 can realize the extrusion of the connecting part 133, and the waterproof performance of the lens 13 is ensured. In other embodiments, the shape of the side wall of the front outer housing 11, the connecting portion 133 and the front inner housing 15 may be a flat plate. Here, the edge of the peripheral side surface of the inner front housing 15 extending in the horizontal direction exceeds the edge of the connecting portion 133 to be connected to the inner wall surface of the outer front housing 11, that is, the length of the cross section of the lens 13 in the front-rear direction is smaller than the length of the cross section of the outer front housing 11 and the inner front housing 15, so that the edge of the inner front housing 15 can be connected to the wall edge of the accommodating chamber 111. Optionally, the connection mode between the two is detachable connection, and the assembly and the maintenance are convenient, for example, threaded connection, buckle connection or insertion connection and the like. And the connection part 133 may be connected with at least one of the inner front case 15 and the outer front case 11, thereby achieving a stable connection relationship. In one embodiment, the connecting portion 133 is connected to the front housing 11 in a detachable manner, so as to facilitate subsequent maintenance and disassembly. The detachable connection here may be a threaded connection, a snap connection, etc., and is not limited herein. In other examples, the connecting portion 133 and the front outer shell 11 may be bonded or otherwise fixedly connected, or the connecting portion 133 and the side wall of the front inner shell 15 may be detachably connected, or the connecting portion 133 and both of them may be connected, so as to further improve stability.

The housing assembly 10 of the present invention comprises an outer front housing 11, an inner front housing 15, a lens 13 and a rear housing 17, which form a protection space by enclosing, wherein the outer front housing 11 is used for fixing the lens 13 and forming an outer frame of the lens 13 by dividing the front housing structure into two parts; the inner front shell 15 serves as the lining structure of the outer front shell 11, so that the overall strength of the front shell can be improved, and the structural stability of the assembled detector 100 is further ensured. Meanwhile, at least part of the connecting part 133 is positioned between the outer front shell 11 and the inner front shell 15, and the inner front shell 15 can also press the gap between the outer front shell 11 and the connecting part 133, so that the external water flow is reduced to enter the inner front shell 15, and the waterproof effect is improved. In addition, the inner front shell 15 is connected with the rear shell 17 and fixed with the outer front shell 11 to fix the lens 13, and the outer front shell 11 is only used for fixing the lens 13, so that the requirement on the strength of the shell is not high, and the structural space required to be reserved around the corresponding lens 13 is small, so that the size of the frame of the lens 13 is reduced in appearance, and the size of the whole machine is smaller.

Referring to fig. 1 and 2, in one possible embodiment of the present application, the housing assembly 10 further includes a sealing plate 19, and the sealing plate 19 is disposed on a surface of the rear housing 17 facing the inner front housing 15 and is connected to a rim of the inner front housing 15 facing the rear housing 17 in a sealing manner.

In order to further improve the connection sealing performance between the inner front shell 15 and the rear shell 17, the housing assembly 10 further comprises a sealing plate 19, the sealing plate 19 is arranged between the inner front shell 15 and the rear shell 17 and fixed on the inner side surface of the rear shell 17, and can seal the opening edge of the inner front shell 15 facing the rear shell 17, so that the water flow entering from the space between the rear shell 17 and the inner front shell 15 cannot enter the inner side of the sealing plate 19, and the waterproof effect on internal components is improved.

Referring to fig. 2 and fig. 3, in a possible embodiment of the present application, a first waterproof rib 151 is disposed on a surface of the inner front shell 15, which is attached to the lens 13, and the first waterproof rib 151 is made of a flexible material;

in this embodiment, the first waterproof rib 151 is disposed at the portion where the inner front shell 15 and the lens 13 are attached to each other, and the first waterproof rib 151 is made of a flexible material and can deform under the extrusion action. In one example, the first waterproof rib 151 is disposed on the inner front shell 15 and can be fixedly connected to the surface of the inner front shell 15, or the first waterproof rib 151 and the inner front shell 15 are formed into an integrally molded structure by two-time injection molding. Of course, in other embodiments, the first waterproof rib 151 may also be disposed on the surface of the lens 13, and the two are connected by assembling or injection molding.

In one example, the first waterproof rib 151 is made of silicone, waterproof foam, thermoplastic elastomer, or rubber.

In this embodiment, no matter first waterproof muscle 151 is located before the interior shell 15 or is located the structure basis of lens 13, the material of the first waterproof muscle 151 of selectable is thermoplastic elastomer (TPE), and this material elastic deformation is good, can effectively guarantee sealed effect to can be through the secondary mould plastics with the interior preceding shell 15 structure of becoming an organic whole. Of course, in other embodiments, the first waterproof rib 151 may also be made of waterproof foam, rubber, or silica gel, and the groove may be formed on the surface of the inner front shell 15, so as to implement assembly by bonding or the like.

Thus, when water flow impacts the housing assembly 10, water is easily introduced into the joint between the lens 13 and the outer front housing 11 facing the front side and flows along the gap between the two, and the first waterproof rib 151 is located between the lens 13 and the inner front housing 15 parallel to the first waterproof rib, so as to prevent the water flow from directly impacting the lens, and when the water flow flows through a distance and needs to rotate 180, the water pressure is reduced, the impact force is also reduced, and therefore the first waterproof rib 151 can be effectively prevented from being damaged. This structure makes the contact route of rivers and first waterproof muscle 151 increase and have had more the corner, all mitigatees on the distance and on the water pressure to reduce the impact to first waterproof muscle 151, promote waterproof grade.

A first waterproof rib 151 is formed between the inner front shell 15 and the lens 13, so that water flow impacting from the front face of the lens 13 needs to flow through a gap between the outer front shell 11 and the lens 13, then turns around by 180 degrees to enter the gap between the lens 13 and the inner front shell 15, and then is blocked by the first waterproof rib 151, and the inner side of the lens 13 and the inner front shell 15 are effectively prevented from being waterproofed.

Referring to fig. 4 and 10, in one possible embodiment of the present invention, the sealing plate 19 is provided with a second waterproof rib 191 at a periphery thereof, the edge of the inner front shell 15 facing the rear shell 17 is formed with an abutting inclined surface 152, a base surface of the second waterproof rib 191 is parallel to the abutting inclined surface 152, and a convex portion of the second waterproof rib 191 abuts against the abutting inclined surface 152.

In this embodiment, in order to further improve the waterproof effect, the second waterproof rib 191 is provided on the periphery of the sealing plate 19, and the waterproof performance of the opening of the inner front case 15 can be further improved by the elastic abutting of the second waterproof rib 191. Here, the structure of the second waterproof rib 191 may be the same as or different from that of the first waterproof rib 151, and the assembly with the sealing plate 19 may be detachable or two-shot molding. In one example, the second waterproof rib 191 includes a base surface and two protrusions protruding from the base surface, and the two protrusions are arranged at intervals in the thickness direction of the sealing plate 19, so as to further improve the waterproof effect. The basal surface is also an inclined surface and is parallel to the abutting inclined surface 152, and the convex part abuts against the abutting inclined surface 152, so that the elastic restoring force of the elastic deformation part to the inner front shell 15 can be decomposed into the thickness direction and the width direction of the sealing plate 19, and the reaction force under the same compression amount is smaller compared with that only in the thickness direction, therefore, the internal stress between the inner front shell 15 and the rear shell 17 is reduced, the phenomena of deformation and gap unevenness of the rear shell 17 are reduced, and the convenience is further improved when the sealing plate is installed. Alternatively, the convex portion is disposed at an acute angle to the base surface, so that the reaction force of the second waterproof rib 191 can be further reduced, and the internal stress between the inner front shell 15 and the rear shell 17 can be reduced.

Referring to fig. 8 and 13, in one possible embodiment of the present application, the first waterproof rib 151 is annular, and/or the second waterproof rib is annular.

In order to realize that lens 13 all has better waterproof performance in the circumferential direction, first waterproof muscle 151 is the cyclic annular setting, and encircles the surface of locating preceding shell 15 towards lens 13 in to guarantee that lens 13's edge all can obtain better water proof. Meanwhile, the first waterproof ribs 151 correspond to the edge positions of the lens 13, so that the part away from the lens 13 for light entering can be further reduced, the influence of water flow penetration is further reduced, and the waterproof effect is improved. Here, in order to fix the first waterproof rib 151 conveniently, the first waterproof rib 151 includes a fixing portion and a spring portion protruding from the fixing portion, the fixing portion is embedded in the inner front shell 15 by secondary injection molding, so that the fixing portion and the inner front shell 15 form an integral structure, and the spring portion protrudes from the surface of the inner front shell 15 and can be elastically abutted against the inner surface of the lens 13 for waterproofing. Optionally, the elastic deformation portion may be one or multiple, and is not limited herein.

In addition to the shape of the first waterproof rib 151 being annular or not, the second waterproof rib 191 is annular and provided at the periphery of the sealing plate 19, so that the abutment slopes 152 may be provided at the opposite side edges of the inner front case 15, and the abutment slopes 152 are also provided at the bottom edge of the inner front case 15, thereby further preventing the deformation of the rear case 17. Here, the inclination angle of the abutment slope 152 with respect to the surface of the inner front shell 15 may be 45 ° ± 5 °, thereby securing the coupling effect of the rear shell 17.

In addition, the edge of the outer front case 11 is wrapped around the edge of the inner front case 15 and may be butted against a partial edge of the rear case 17, thereby providing a good appearance.

Referring to fig. 2, fig. 6 and fig. 7 again, in a possible embodiment of the present application, a flange 135 is protruded at a connection portion between the lens portion 131 and the connection portion 133, and the flange 135 is attached to and pressed against an opening edge of the lens hole 113.

It can be understood that the lens portion 131 protrudes from the surface where the connecting portion 133 is located, so as to be capable of being matched with the edge of the front housing 11 with a certain thickness, so as to achieve a better clamping and positioning effect, meanwhile, a flange 135 is further provided at the connecting portion where the lens portion 131 protrudes from the connecting portion 133, one side of the flange 135 is connected to the edge of the lens hole 113, and the other side is flush with and excessive to the outer surfaces of the lens portion 131 and the front housing 11, so as to effectively ensure the smoothness of the appearance of the housing assembly 10, prevent the front housing 11 and the lens portion 131 from generating a gap in the direction from the lens 13 to the rear housing 17, and thus improve the aesthetic property; the formation of sharp corners at the opening of the lens 13 by the outer front shell 11 can be avoided, the process cost is reduced, and the protection performance is good; moreover, water flow impacted from the front can be blocked, so that a path of the water flow entering the interior is provided with one more corner, and the waterproof effect is further improved.

Referring to fig. 5 and 6, in a possible embodiment of the present invention, one of the cavity wall of the accommodating cavity 111 and the outer surface of the connecting portion 133 is provided with a male buckle 1331, the other one is provided with a female buckle 115, and the connecting portion 133 is connected to the front housing 11 by the engagement of the female buckle 115 and the male buckle 1331;

and/or, two opposite cavity walls of the accommodating cavity 111 are provided with limiting ribs 117, and two edges of the connecting part 133 are clamped with the limiting ribs 117.

In this embodiment, in order to carry out the dismouting conveniently, be equipped with the nook closing 115 in the chamber wall that will hold chamber 111, this nook closing 115 can be hole or cell body etc, surface at connecting portion 133 is equipped with protruding knot 1331, protruding knot 1331 can be hook or lug etc, block in nook closing 115 through protruding knot 1331, thereby realize preliminary pre-fixing of both, so, can also make lens 13's surface can paste to the chamber wall surface that holds chamber 111, guarantee the leakproofness that both connect, and set up cell body or hole in the great outer preceding shell 11 of thickness, and set up the structure at the lens 13 protruding of thinner thickness, can effectively reduce the influence to lens 13 structural strength. Of course, in other embodiments, a convex buckle 1331 may be protruded on the wall of the accommodating cavity 111, and a groove may be formed on the surface of the lens 13. Optionally, there are a plurality of the female buckles 115 and the male buckles 1331, for example, two, or three or more, which can further improve the connection stability.

On the basis that there is or not lens 13 and shell 11 to be connected through the block, still be equipped with spacing muscle 117 in the chamber wall that holds chamber 111, this spacing muscle 117 is protruding to be located the structure that holds chamber 111 chamber wall, can make the both sides edge of connecting portion 133 sink into the inboard of this spacing muscle 117 to spacing this connecting portion 133 prevents that lens 13 from deviating from the inboard, effectively improves the stability of structure. Here, a plurality of limiting ribs 117 may be disposed on two opposite side walls of the accommodating cavity 111, and the plurality of limiting ribs 117 are arranged at intervals along the height direction of the front housing 11, so as to improve the limiting stability.

Referring to fig. 5 and 7, in one possible embodiment of the present disclosure, one of the outer peripheral surface of the inner front shell 15 and the inner wall surface of the accommodating cavity 111 is provided with a groove 119, and the other one is provided with a buckle 153, wherein the buckle 153 is clamped in the groove 119 to connect the inner front shell 15 and the outer front shell 11;

and/or, one of the outer peripheral surface of the inner front shell 15 and the cavity wall of the accommodating cavity 111 is provided with a female spigot 118, the other one is provided with a male spigot 155, and the inner front shell 15 and the outer front shell 11 are limited by the matching of the female spigot 118 and the male spigot 155.

To further enhance the convenience of installation, the connection of the inner front shell 15 and the outer front shell 11 is also a snap 153 connection. Specifically, be equipped with buckle 153 in the outer peripheral edges of preceding shell 15 inside, the chamber wall that holds chamber 111 is equipped with recess 119 to realize both cooperation connections in recess 119 through the buckle 153 card, so can be on lens 13 is fixed in shell 11's before the outer basis in advance at lens 13, support to press once more lens 13 fixed, and make first waterproof muscle 151 and lens 13 carry out the contact and compress tightly, guarantee water-proof effects. Simultaneously, recess 119 and buckle 153's cooperation can make buckle 153 fall into in the recess 119 completely to make the surface of interior front shell 15 laminate mutually with the medial surface of outer front shell 11, further promote water-proof effects.

In addition to the engagement between the inner front case 15 and the outer front case 11, since the inner front case 15 has a frame structure, one side thereof extends into the connecting portion 133 with a space formed between the lens portion 131, and the other side thereof is connected to the edge of the outer front case 11. Be equipped with female tang 118 in the chamber wall that should hold chamber 111, female tang 118 is the groove body structure, and the edge intercommunication of one end and outer preceding shell 11, be equipped with public tang 155 in the lateral surface of shell 15 before including, this public tang 155 can be the lug, insert female tang 118 along the edge with public tang 155 in to can prevent that outer preceding shell 11 from expanding outward and warping and influence outer preceding shell 11 and lens 13, the lock volume and the outward appearance effect of inner preceding shell 15 and outer preceding shell 11, promote the compactness that outer preceding shell 11 and inner preceding shell 15 are connected. Meanwhile, the female seam allowance 118 is arranged at the position of the limiting rib 117, and when the male seam allowance 155 is inserted into the female seam allowance 118, the male seam allowance can be clamped and fixed with the limiting rib 117 in a matching mode, so that the clamping connection and the appearance effect are prevented from being influenced by outward expansion deformation of the outer front shell 11.

Referring to fig. 8, in one possible embodiment of the present invention, an avoiding hole 157 is formed in the middle of the inner front shell 15, a platform 159 is connected to the edge of the avoiding hole 157, the platform 159 is recessed from the lens 13 to the rear shell 17, and a light passing hole 1591 is formed in the bottom of the platform 159.

In this embodiment, the inner front shell 15 is also a frame structure with an opening at one side, the opening at one side is used for accommodating the internal electronic control assembly 30 conveniently, meanwhile, in order to enable light of the lens 13 to enter the internal sensor structure, an avoiding hole 157 is formed in one side, facing the lens 13, of the inner front shell 15, a sinking platform portion 159 is connected to the edge of the avoiding hole 157, the sinking platform portion 159 is concavely arranged in the inner front shell 15, the shape of the sinking platform portion can be a quadrangular shape or a frustum shape, and the like, and the design can be performed according to the envelope of light received from the line of the lens 13 to the infrared receiver. And a light passing hole 1591 is formed at the bottom of the sinking platform 159, and the size of the light passing hole 1591 is matched with the infrared sensor to allow the light to enter and be received. Thus, the strength weakening caused by completely hollowing out the middle part of the inner front shell 15 can be avoided, and the effect of strengthening the strength of the inner front shell 15 is achieved. Of course, two counter support portions 159 may be provided, and are actually set as the case may be.

Optionally, the sunken platform part 159 and the inner front shell 15 are of an integrally formed structure, so that the structure is high in strength and convenient to process.

Referring to fig. 1, in one possible embodiment of the present disclosure, a wire passing hole and/or a mounting hole 171 are formed on a surface of the rear housing 17.

In this embodiment, in order to facilitate the installation of the housing assembly 10 at a desired position, a plurality of through mounting holes 171 are formed on the surface of the rear case 17, and the plurality of mounting holes 171 may be spaced apart from each other, thereby improving the installation stability. On the basis of the arrangement of the sealing plate 19, the waterproof effect between the inner front shell 15 and the rear shell 17 is achieved, and the rear shell 17 is provided with the mounting hole 171 in advance, so that convenience is brought to field mounting. Of course, in order to realize the electrical connection of the detector 100, a wire hole may be further opened on the surface of the rear case 17, and the wire hole is spaced apart from the mounting hole 171. Alternatively, in other embodiments, only the wire passing hole may be opened.

Referring to fig. 1, 2, 11 and 12, the electronic control assembly 30 is mounted on a side of the inner front shell 15 away from the lens 13, and it can be understood that the detector 100 adopts a passive infrared manner, that is, the detector itself does not emit any energy but only passively receives and detects infrared radiation from the environment to achieve a security alarm function, so that the detector 100 may further include an infrared sensor, an alarm controller and other parts. The electronic control assembly 30 includes a circuit board 31 and a circuit board seat 33 for fixing the circuit board 31, the circuit board 31 is fixed on the circuit board seat 33, and then the circuit board seat 33 is fixed at the edge of the inner front shell 15. Here, the fixing positions of the inner front case 15 and the outer front case 11 are on the four sides thereof, so as to ensure the stability of connection, the fixing positions of the inner front case 15 and the rear case 17 are on the upper and lower sides, the fixing positions of the circuit board seat 33 and the inner front case 15 can be selected on the upper and lower sides, and the connection mode can be a structure of inserting and clamping combination. The infrared sensor and the alarm controller may be disposed on the circuit board 31, and the infrared sensor corresponds to one side of the lens 13 and corresponds to the light inlet 1591 of the inner front case 15, so that once infrared radiation enters, the infrared sensor generates an abrupt change electric signal by focusing of the optical system, and then the alarm controller gives an alarm through processing and control of the circuit board. In an embodiment, two counter sink portions 159 of the inner front housing 15 are provided, each counter sink portion 159 is provided with a light inlet 1591, the two counter sink portions 159 are arranged along the height direction of the inner front housing 15, and the two infrared sensors are also provided and respectively correspond to the two light inlet 1591, so that the light collection efficiency is improved, and the detection efficiency and performance are ensured.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims (10)

1. A probe, characterized in that the probe comprises:

the lens holder comprises an outer front shell, a lens holder and a lens holder, wherein the outer front shell forms an accommodating cavity with an opening, and the wall of the accommodating cavity, which is far away from the opening, is provided with a lens hole;

the lens comprises a lens part and a connecting part, the connecting part is annularly arranged on the periphery of the lens part, and the lens part protrudes out of the lens hole;

the inner front shell is arranged in the accommodating cavity and connected with the cavity wall of the accommodating cavity, and at least part of the connecting part is positioned between the outer front shell and the inner front shell and connected with at least one of the outer front shell and the inner front shell; and

a rear housing connected to an edge of the inner front housing.

2. The probe of claim 1, further comprising a sealing plate disposed on a surface of the rear shell facing the inner front shell and sealingly attached at a peripheral edge to a rim of the inner front shell facing the rear shell, the inner front shell and the sealing plate enclosing a waterproof chamber.

3. The detector of claim 2, wherein a first waterproof rib is disposed between the inner front shell and the surface of the connecting portion, and the first waterproof rib is made of a flexible material.

4. The probe of claim 3, wherein the sealing plate is provided at a peripheral edge thereof with a second waterproof rib, an abutment slope is formed at an edge of the inner front shell facing the rear shell, a basal surface of the second waterproof rib is parallel to the abutment slope, and a convex portion of the second waterproof rib abuts against the abutment slope.

5. A probe according to claim 4, wherein the first waterproof rib is annular and/or the second waterproof rib is annular.

6. A probe according to any one of claims 3 to 5, wherein the first waterproof rib is of integrally formed construction with the inner front shell.

7. A probe according to any one of claims 1 to 5, wherein a flange is convexly provided at a junction of the lens portion and the connecting portion, and the flange is abutted against an opening edge of the lens hole.

8. The detector according to any one of claims 1 to 5, wherein one of the cavity wall of the accommodating cavity and the outer surface of the connecting part is provided with a male buckle, the other is provided with a female buckle, and the connecting part is connected to the outer front shell through the clamping of the female buckle and the male buckle;

and/or, two cavity walls opposite to the containing cavity are provided with limiting ribs, and two edges of the connecting part are clamped with the limiting ribs.

9. The probe according to any one of claims 1 to 5, wherein one of the outer peripheral surface of the inner front shell and the inner wall surface of the accommodation chamber is provided with a groove, and the other is provided with a snap, and the snap is snapped in the groove to connect the inner front shell and the outer front shell;

and/or one of the peripheral surface of the inner front shell and the cavity wall of the accommodating cavity is provided with a female spigot, the other one is provided with a male spigot, and the inner front shell and the outer front shell are limited through the matching of the female spigot and the male spigot.

10. The detector according to claim 1, wherein a relief hole is formed in the middle of the inner front shell, a counter sink portion is connected to an edge of the relief hole, the counter sink portion is recessed from the lens to the rear shell, and a light passing hole is formed in the bottom of the counter sink portion;

and/or the surface of the rear shell is provided with a wire passing hole and/or a mounting hole.

Images