CN216206433U

CN216206433U - Photoelectric sensor

Info

Publication number: CN216206433U
Application number: CN202122907207.5U
Authority: CN
Inventors: 吴晨雨; 吴建武
Original assignee: Zhejiang Leishi Electronic Technology Co ltd
Current assignee: Zhejiang Leishi Electronic Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-05
Anticipated expiration: 2031-11-19

Abstract

The utility model relates to a photoelectric sensor, which comprises a shell, wherein a bracket is arranged in the shell, the left side of the bracket is connected with a first PCB (printed circuit board), the upper side of the bracket is connected with a second PCB, and the lower side of the bracket is provided with a light receiving part accommodating area and a light projection accommodating area which are spaced; the second PCB board is respectively and electrically connected with a light receiving element and a light projecting element, a light receiving lens is arranged in the light receiving portion accommodating area, and a light projecting lens is arranged in the light projecting accommodating area; a light-transmitting area is arranged on the lower side of the shell; and a cable which penetrates into the shell and is electrically connected with the first PCB or the second PCB is arranged outside the shell. According to the utility model, the bracket is arranged in the shell, so that the number of components is reduced, the installation steps are simplified, the stability of a product is improved, the production efficiency is improved, and the material and labor cost is effectively reduced; a shield case is disposed on the periphery of the light receiving element for the purpose of improving the measurement accuracy of the light receiving element.

Description

Photoelectric sensor

Technical Field

The utility model relates to the field of sensors, in particular to a photoelectric sensor.

Background

The photoelectric sensor is generally composed of two parts, a processing path and a processing element. The basic principle is based on the photoelectric effect, which converts the measured change into a change of an optical signal, and then further converts the non-electrical signal into an electrical signal by means of a photoelectric element. The photoelectric effect is that a series of photons with a certain energy bombard an object, the energy of the photons is transferred to electrons, and the whole energy of a photon is absorbed by an electron at one time, and the state of the electron changes after the electron obtains the energy transferred by the photon, so that the object irradiated by light has a corresponding electric effect.

The existing photoelectric sensor has the defects that the whole size is large, the support and the receiving lenses are arranged in the shell, the support and the receiving lenses are matched one by one, the different receiving lenses correspondingly use the corresponding supports, the support cannot be used in a general or shared mode, the manufacturing cost is increased, and the management difficulty and complexity are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a photoelectric sensor which is convenient to assemble and strong in adaptability by optimizing a support structure in a shell and adopting a common support to adapt to different receiving lenses.

The utility model is realized in such a way, and provides a photoelectric sensor which comprises a shell, wherein a bracket is arranged in the shell, the left side of the bracket is connected with a first PCB, the upper side of the bracket is connected with a second PCB, the lower side of the bracket is provided with a light receiving part accommodating area and a light projection accommodating area which are spaced, and the first PCB is electrically connected with the second PCB; the second PCB is respectively and electrically connected with a light receiving element and a light projecting element which respectively and correspondingly face the bottoms of the light receiving accommodating area and the light projecting accommodating area; a light receiving lens is arranged in the light receiving accommodating area, and a light projecting lens is arranged in the light projecting accommodating area; a light-transmitting area is arranged on the lower side of the shell; a cable which penetrates into the shell and is electrically connected with the first PCB or the second PCB is arranged outside the shell; the both sides correspondence of light receiving lens is provided with first connection edge, and the both sides correspondence of light projecting lens is provided with the second and connects the edge, and the corresponding first connector of having seted up on the cell wall of light receiving portion holding area front side and rear side, and the corresponding second connector of having seted up on the cell wall of light projecting holding area front side and rear side, light receiving lens put into in light receiving portion holding area, in the first connection of its both sides along the card income first connector that corresponds the position, light projecting lens puts into in light projecting holding area, connects along the card income second connector that corresponds the position through the second of its both sides in.

Further, the shell includes casing and lid, establishes opening holding tank up in the casing, vertically opens relatively between left preceding cell surface of holding tank and the back cell surface and is equipped with PCB board induction groove, the support is put into in the holding tank from top to bottom, and the front side edge and the rear side edge of first PCB board correspond respectively and slide in PCB board induction groove, and on the casing was located to the lid, be equipped with the cable clearing hole on it, the cable was worn to be equipped with the line through the hole and is buckled, the cable warp thread is buckled and is run through to the casing in.

Furthermore, a limiting hook is arranged on the right side in the accommodating groove, the support is placed into the accommodating groove from top to bottom, and the right side of the support is buckled with a limiting buckle arranged on the right side of the support through the limiting hook.

Furthermore, an inverted buckle is arranged between the front side and the rear side of the upper end of the support and opposite to the front side and the rear side, and the second PCB is buckled in and connected between the inverted buckles on the two sides.

Furthermore, a shielding cover is arranged on the periphery of the light receiving element of the second PCB, and a light hole is formed in the shielding cover corresponding to the light receiving end of the light receiving element.

Furthermore, the shielding cover comprises an upper cover and a lower cover, the lower cover is connected with the support, the second PCB is arranged on the upper side of the support, the upper cover is arranged on the upper side of the second PCB, the upper cover and the lower cover are connected in a welding mode to form a cover body structure surrounding the light receiving elements on the second PCB, and the light holes are formed in the lower cover.

Furthermore, two potentiometer rotating grooves are distributed on the first PCB in an up-down mode, two knob mounting holes corresponding to the potentiometer rotating grooves in position are formed in the left side of the shell, knobs are arranged in the knob mounting holes respectively, and the screwing-in ends of the knobs are connected with the corresponding potentiometer rotating grooves respectively.

Furthermore, the two sides of the left end of the support are provided with elastic PCB locating rods, and the two sides of the first PCB lean against and are connected to the elastic PCB locating rods on the two sides.

Furthermore, the lower side of the shell is provided with a light-transmitting groove hole serving as a light-transmitting area, and a plane mirror is arranged in the light-transmitting groove hole.

Compared with the prior art, the photoelectric sensor has the advantages that the bracket is arranged in the shell, the first PCB, the second PCB, the shielding cover, the light receiving lens and the light projecting lens are connected with the bracket to form the core assembly, and then the core assembly is arranged in the shell, so that the number of assemblies is reduced, the installation steps are simplified, the stability of a product is improved, the production efficiency is improved, and the material cost and the labor cost are effectively reduced; the support adopts the connector of different positions in order to be applicable to the receiving lens of different specifications, strengthens the commonality of support, arranges the shield cover in light receiving element periphery moreover, and its purpose improves light receiving element's measurement accuracy.

Drawings

FIG. 1 is a front cross-sectional view of a photosensor according to the present invention;

FIG. 2 is a schematic perspective view of a photosensor according to the present invention;

FIG. 3 is a perspective view of an assembled structure of the bracket and corresponding components of FIG. 1;

FIG. 4 is a front view of the assembled structure of the bracket and corresponding components of FIG. 1;

FIG. 5 is a second perspective view of the assembled structure of the bracket and corresponding components of FIG. 1;

FIG. 6 is a perspective view of the bracket of FIG. 1;

FIG. 7 is a schematic perspective view of the housing of FIG. 1;

FIG. 8 is a schematic view of the second PCB board and the shield can of FIG. 1;

FIG. 9 is a schematic view of the structure of the light receiving lens of FIG. 1;

fig. 10 is a schematic structural view of the light projection lens of fig. 1.

Detailed Description

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

Referring to fig. 1 to 10, a photoelectric sensor according to the present invention includes a housing 1, a support 2 is disposed in the housing 1, a first PCB 3 is connected to a left side of the support 2, a second PCB 4 is connected to an upper side of the support 2, a light receiving area 21 and a light projecting area 22 are spaced apart from each other and disposed at a lower side of the support, and the first PCB 3 is electrically connected to the second PCB 4. The second PCB 4 is electrically connected with the light receiving element 41 and the light projecting element 42, and the light receiving element 41 and the light projecting element 42 respectively face the bottom of the light receiving accommodating area 21 and the bottom of the light projecting accommodating area 22; the light receiving section 21 is provided with a light receiving lens 5 therein, and the light projection accommodating section 22 is provided with a light projecting lens 6 therein.

A light-transmitting area 10 is arranged at the lower side of the shell 1; and a cable 7 which penetrates into the shell 1 and is electrically connected with the first PCB 3 or the second PCB 4 is arranged outside the shell 1. And an inverse buckle 24 is arranged between the front side and the rear side of the upper end of the bracket 2, and the second PCB 4 is buckled into and connected between the inverse buckles 24 on the two sides. The both sides of 2 left ends of support are equipped with elasticity PCB board locating lever 25, and the both sides of first PCB board 3 lean on to be connected on both sides elasticity PCB board locating lever 25.

Still be provided with the reference column that is used for fixing a position first PCB board 3 or second PCB board 4 on the support 2, it adopts mould integrated into one piece structure, constitutes through injection moulding light receiving part holding area 21, light projection holding area 22, back-off 24, elasticity PCB board locating lever 25 and reference column etc..

The housing 1 includes a housing 11 and a cover 12, wherein an accommodating groove 110 with an upward opening is formed in the housing 11, a PCB board guide groove 111 is longitudinally and relatively formed between a front groove surface and a rear groove surface on the left side of the accommodating groove 110, the support 2 is placed in the accommodating groove 110 from top to bottom, a front side edge and a rear side edge of the first PCB board 3 respectively and correspondingly slide into the PCB board guide groove 111, the cover 12 is covered on the housing 11, a cable through hole 120 is formed in the cover 12, a cable buckle 8 is arranged in the cable through hole 120 in a penetrating manner, and the cable 7 penetrates through the housing 11 through the cable buckle 8, wherein the method for fixing the cable 7 not only passes through the cable buckle, but also can be used for placing the assembled components into an injection molding machine and connecting the cover 12 into a whole through injection molding. The right side in the accommodating groove 110 is provided with a limiting hook 112, the support 2 is placed into the accommodating groove 110 from top to bottom, and the right side of the support is buckled with a limiting buckle 23 arranged on the right side of the support 2 through the limiting hook 112. The housing 11 and the cover 12 are assembled using glue or an ultrasonic process.

The light receiving element 41 of the second PCB 4 is disposed with a shielding case 9 at the periphery thereof, and the shielding case 9 is provided with a light hole 90 at a position corresponding to the light receiving end of the light receiving element 41. The shield case 9 includes an upper case 91 and a lower case 92, the lower case 92 is connected to the support 2, the second PCB 4 is disposed on the upper side of the support 2, the upper case 91 is disposed on the upper side of the second PCB 4, and is connected to the lower case 92 by welding to form a case structure surrounding the light receiving element 41 on the second PCB 4, wherein the light hole 90 is disposed on the lower case 92. The shielding case 9 is arranged to effectively avoid the influence of the peripheral light source on the signal light source received by the light receiving element 41. The shield can take different shapes to achieve the same purpose.

The both sides of light receiving lens 5 are provided with first connection edge 50 correspondingly, the both sides of light projecting lens 6 are provided with second connection edge 60 correspondingly, the corresponding first interface 210 that has seted up on the cell wall of light receiving part holding area 21 front side and rear side, the corresponding second connector 220 that has seted up on the cell wall of light projecting holding area 22 front side and rear side, light receiving lens 5 puts into in light receiving part holding area 21, in the first interface 210 of corresponding position is gone into along 50 card to the first connection of its both sides, light projecting lens 6 puts into in light projecting holding area 22, in the second connector 220 of corresponding position is gone into along 60 card to the second connection of its both sides.

Two potentiometer rotary grooves 30 are distributed on the first PCB 3 from top to bottom, two knob mounting holes 13 corresponding to the potentiometer rotary grooves 30 are arranged on the left side of the shell 1, knobs 14 are arranged in the knob mounting holes 13, and the screwing ends of the knobs 14 are connected with the corresponding potentiometer rotary grooves 30 respectively. A light-transmitting slot hole 15 serving as a light-transmitting area is formed in the lower side of the shell 1, and a plane mirror 16 is arranged in the light-transmitting slot hole 15.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A photoelectric sensor comprises a shell (1), a bracket (2) is arranged in the shell (1), and is characterized in that,

the left side of the bracket (2) is connected with a first PCB (3), the upper side of the bracket is connected with a second PCB (4), the lower side of the bracket is provided with a light receiving accommodating area (21) and a light projection accommodating area (22) which are spaced, and the first PCB (3) is electrically connected with the second PCB (4);

the second PCB (4) is respectively and electrically connected with a light receiving element (41) and a light projecting element (42), and the light receiving element (41) and the light projecting element (42) respectively correspond to the bottoms facing the light receiving accommodating area (21) and the light projecting accommodating area (22);

a light receiving lens (5) is arranged in the light receiving accommodating area (21), and a light projecting lens (6) is arranged in the light projecting accommodating area (22);

a light-transmitting area (10) is arranged on the lower side of the shell (1);

a cable (7) which penetrates into the shell (1) and is electrically connected with the first PCB (3) or the second PCB (4) is arranged outside the shell (1);

the both sides of light receiving lens (5) correspond and are provided with first connection edge (50), the both sides of light projecting lens (6) correspond and are provided with second connection edge (60), correspond on the cell wall of light receiving part accommodation area (21) front side and rear side and seted up first connector (210), correspond on the cell wall of light projection accommodation area (22) front side and rear side and seted up second connector (220), light receiving lens (5) are put into in light receiving part accommodation area (21), go into in first connector (210) of corresponding position along (50) card income through the first connection of its both sides, light projecting lens (6) are put into in light projection accommodation area (22), go into in second connector (220) of corresponding position along (60) card income through the second connection of its both sides.

2. The photoelectric sensor according to claim 1, wherein the housing (1) comprises a housing (11) and a cover body (12), wherein an accommodating groove (110) with an upward opening is formed in the housing (11), a PCB board guiding groove (111) is longitudinally and oppositely formed between a front groove surface and a rear groove surface on the left side of the accommodating groove (110), the bracket (2) is arranged in the accommodating groove (110) from top to bottom, the front side edge and the rear side edge of the first PCB board (3) respectively and correspondingly slide into the PCB board guiding groove (111), the cover body (12) is covered on the housing (11), a cable passing hole (120) is formed in the cover body, a wire buckle (8) is arranged in the cable passing hole (120), and the cable (7) penetrates into the housing (11) through the wire buckle (8).

3. The photoelectric sensor as claimed in claim 2, wherein a limiting hook (112) is disposed at the right side in the accommodating groove (110), the bracket (2) is disposed in the accommodating groove (110) from top to bottom, and the right side of the bracket is fastened to a limiting buckle (23) disposed at the right side of the bracket (2) via the limiting hook (112).

4. The photosensor according to claim 1, wherein an inverse button (24) is provided between the front side and the rear side of the upper end of the holder (2) facing each other, and the second PCB board (4) is inserted and connected between the inverse buttons (24) on both sides.

5. The photosensor according to claim 1, wherein a shield case (9) is disposed on the periphery of the light receiving element (41) of the second PCB (4), and a light transmitting hole (90) is formed on the shield case (9) at a position corresponding to a light receiving end of the light receiving element (41).

6. The photosensor according to claim 5, wherein the shield case (9) comprises an upper case (91) and a lower case (92), the lower case (92) is connected to the support (2), the second PCB (4) is disposed on the upper side of the support (2), the upper case (91) is disposed on the upper side of the second PCB (4), and is connected to the lower case (92) by soldering to form a case structure surrounding the light receiving element (41) on the second PCB (4), and wherein the light transmitting hole (90) is provided on the lower case (92).

7. The photoelectric sensor according to claim 1, wherein two potentiometer rotary slots (30) are distributed on the first PCB (3) up and down, two knob mounting holes (13) corresponding to the potentiometer rotary slots (30) are formed on the left side of the housing (1), knobs (14) are disposed in the knob mounting holes (13), and the screwing ends of the knobs (14) are connected with the corresponding potentiometer rotary slots (30).

8. The photoelectric sensor of claim 1, wherein elastic PCB positioning rods (25) are arranged on two sides of the left end of the bracket (2), and two sides of the first PCB (3) lean against and are connected to the elastic PCB positioning rods (25) on two sides.

9. The photoelectric sensor according to claim 1, wherein a light-transmitting slot (15) is formed as a light-transmitting region on the lower side of the housing (1), and a flat mirror (16) is provided in the light-transmitting slot (15).