Integrated transmission type light-operated sensor

Abstract

The utility model relates to the technical field of light-operated sensors, in particular to an integrated transmission type light-operated sensor, which comprises a plastic outer box capable of transmitting infrared light, a bottom plate of the plastic outer box is provided with a pair of through holes, and a pair of detection outer boxes capable of transmitting infrared light are respectively and integrally formed in the pair of through holes. According to the integrated transmission type light-operated sensor, the metal support is adopted to replace a traditional PCB, automatic insertion and welding of the infrared emitting unit and the infrared receiving unit are achieved, and the production efficiency is effectively improved; through the structural design that the infrared emitting unit and the infrared receiving unit are inserted into the sponge, epoxy resin packaging is achieved under the condition that infrared light transmission is not affected, dust is effectively prevented from entering, the service life of a product is greatly prolonged, and the dustproof and waterproof characteristics of the product are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of light control sensors, in particular to an integrated transmission type light control sensor. Background Art

[0002] The light control sensor uses an infrared transmitting unit and an infrared receiving unit to test the state of the liquid flow in the pipeline and obtain an output signal based on it, so as to judge whether the pipeline is "empty" or "with liquid passing through". The existing side plug type light control sensor has a structural design of a plastic box, a plastic cover and a PCB assembly, which is difficult to realize automated production; and the overall structure is not encapsulated, so dust can easily enter the interior, affecting the product life. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art that the structural design of the plastic box, plastic cover and PCB assembly is difficult to realize automated production and the overall structure is not packaged, so dust can easily enter the interior, thus affecting the product life. An integrated transmissive light control sensor is proposed.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An integrated transmission-type light control sensor is designed, including an infrared-transmissive plastic outer box, a pair of through holes are provided on the bottom plate of the plastic outer box, and a pair of infrared-transmissive detection outer boxes are formed in the pair of through holes, an infrared-impermeable plastic inner box is provided on the bottom plate of the plastic outer box, and a metal bracket is provided on the upper end surface of the plastic inner box, a pair of through holes are provided on the top of the plastic inner box, and a pair of infrared-impermeable detection inner boxes are formed in the pair of through holes, a pair of lens grooves are provided on the end surfaces of the detection inner boxes close to each other, the pair of detection inner boxes are respectively inserted into a pair of detection outer boxes, and the interiors of the pair of detection inner boxes are respectively plugged with An infrared emitting unit, an infrared receiving unit, and the lens parts of the infrared emitting unit and the infrared receiving unit are respectively arranged in two lens grooves, a pair of sponges respectively located above the infrared emitting unit and the infrared receiving unit are respectively inserted into the interior of a pair of detection inner boxes, the PIN pins of the infrared emitting unit and the infrared receiving unit respectively penetrate a pair of sponges and are connected to a metal bracket through a clamping structure, a plug slot is opened at the right end of the plastic outer box, and a plug is installed in the plug slot, the interior of the plastic outer box is filled with epoxy resin, and the epoxy resin is filled and infiltrated into the space of the detection inner box located at the upper end of the sponge, and the PIN pins of the plug are welded to the metal bracket.

[0006] Preferably, the upper end surface of the plastic inner box is provided with a plurality of grooves of different shapes, and the grooves are filled with epoxy resin.

[0007] Preferably, two isolation plates are fixedly provided at the bottom of the plug slot, and the two isolation plates are both located between two adjacent PIN pins of the plug.

[0008] Preferably, the clamping structure includes a spring and a spring slot, and the upper end surface of the metal bracket is penetrated by two pairs of spring slots on the left and right, and a pair of springs are respectively fixed in the two pairs of spring slots, and the PIN pins of the infrared transmitting unit and the infrared receiving unit are respectively clamped between each pair of springs on the left and right sides.

[0009] Preferably, the front and rear end surfaces of the left end of the plastic outer box are integrally formed with fixing ears, and the upper end surface of the fixing ear is provided with a plug hole for the screw to pass through.

[0010] Preferably, the upper end surfaces of the pair of fixing ears are each provided with four triangular grooves respectively located at the four corners of the fixing ears, and the inner wall of the triangular groove close to the insertion hole is an arc surface coaxial with the insertion hole.

[0011] Preferably, a laser cutting groove is provided on the upper end surface of the metal bracket, and the laser cutting groove is located at the connection point of different circuits inside the metal bracket.

[0012] The integrated transmissive light control sensor proposed by the utility model has the beneficial effects that: the integrated transmissive light control sensor adopts a metal bracket to replace the traditional PCB, realizes the automatic insertion and welding of the infrared emitting unit and the infrared receiving unit, and effectively improves the production efficiency; through the structural design of inserting the infrared emitting unit and the infrared receiving unit into the sponge, epoxy resin packaging is realized without affecting the propagation of infrared light, effectively preventing the entry of dust, and greatly improving the product life and dustproof and waterproof characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the external structure of the integrated transmission-type light control sensor proposed by the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the integrated transmission-type light control sensor proposed by the utility model;

[0015] Figure 3 This is an exploded view of the integrated transmission-type light control sensor proposed by the utility model;

[0016] Figure 4 This is a schematic diagram of the plastic outer box structure of the integrated transmission type light control sensor proposed by the utility model;

[0017] Figure 5 This is a schematic diagram of the plastic inner box structure of the integrated transmission type light control sensor proposed by the utility model.

[0018] In the figure: 1. detection outer box; 2. fixing ears; 3. plastic outer box; 4. epoxy resin; 5. isolation plate; 6. plug; 7. lens slot; 8. plastic inner box; 9. infrared transmitting unit; 10. sponge; 11. metal bracket; 12. laser cutting slot; 13. spring; 14. infrared receiving unit; 15. detection inner box; 16. plug slot. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-5 The integrated transmission type optical control sensor comprises an infrared-transmissive plastic outer box 3, a pair of through holes are provided on the bottom plate of the plastic outer box 3, and a pair of infrared-transmissive detection outer boxes 1 are formed in the pair of through holes, an infrared-impermeable plastic inner box 8 is provided on the bottom plate of the plastic outer box 3, and a metal bracket 11 is provided on the upper end surface of the plastic inner box 8, a pair of through holes are provided on the top of the plastic inner box 8, and a pair of infrared-impermeable detection inner boxes 15 are formed in the pair of through holes, a pair of detection inner boxes 15 are provided with lens grooves 7 on the end surfaces close to each other, a pair of detection inner boxes 15 are respectively inserted into a pair of detection outer boxes 1, and an infrared emitting unit 9 and an infrared The infrared transmitting unit 9 and the infrared receiving unit 14 are respectively arranged in the two lens grooves 7, and a pair of detection inner boxes 15 are respectively plugged with a pair of sponges 10 located above the infrared transmitting unit 9 and the infrared receiving unit 14. The PIN pins of the infrared transmitting unit 9 and the infrared receiving unit 14 respectively penetrate the pair of sponges 10 and are connected to the metal bracket 11 through the clamping structure. A plug groove 16 is opened at the right end of the plastic outer box 3, and a plug 6 is installed in the plug groove 16. The interior of the plastic outer box 3 is filled with epoxy resin 4, and the epoxy resin 4 is filled and infiltrated into the space of the detection inner box 15 located at the upper end of the sponge 10, and the PIN pin of the plug 6 is welded to the metal bracket 11.

[0021] The upper end surface of the plastic inner box 8 is provided with a plurality of grooves of different shapes, and the grooves are filled with epoxy resin 4 .

[0022] Two isolation plates 5 are fixedly disposed at the bottom of the plug slot 16 , and the two isolation plates 5 are both located between two adjacent PIN pins of the plug 6 .

[0023] The clamping structure includes a spring 13 and a spring slot. The upper end surface of the metal bracket 11 is penetrated by two pairs of spring slots on the left and right, and a pair of springs 13 are fixed in each of the two pairs of spring slots. The PIN pins of the infrared transmitting unit 9 and the infrared receiving unit 14 are clamped between each pair of springs 13 on the left and right sides.

[0024] The front and rear end surfaces of the left end of the plastic outer box 3 are integrally formed with fixing ears 2, and the upper end surface of the fixing ears 2 is provided with a plug hole for screws to pass through.

[0025] The upper end surfaces of the pair of fixing ears 2 are each provided with four triangular grooves located at the four corners of the fixing ears 2, and the inner wall of the triangular groove close to the insertion hole is an arc surface coaxial with the insertion hole.

[0026] A laser cutting groove 12 is formed on the upper end surface of the metal bracket 11 , and the laser cutting groove 12 is located at the connection point of different circuits inside the metal bracket 11 .

[0027] Working principle: Assemble the plastic inner box 8 into the plastic outer box 3; insert the infrared emitting unit 9 and the infrared receiving unit 14 into the two detection inner boxes 15 respectively; put the two sponges 10 on the PIN pins of the infrared emitting unit 9 and the infrared receiving unit 14 respectively; insert the PIN pins of the infrared emitting unit 9 and the infrared receiving unit 14 into the spring card slot of the metal bracket 11 according to the required specification height, and then install the plug 6 on the right side of the metal bracket 11 and the plug slot 16, assemble the metal bracket assembly with the infrared emitting unit 9, the infrared receiving unit 14, the sponge 10 and the plug 6 into the plastic outer box 3, insert the infrared emitting unit 9 and the sponge 10, the infrared receiving unit 14 and the sponge 10 into the two detection inner boxes 15 respectively, and connect the infrared emitting unit 9, the infrared receiving unit 14 and the plug 6 to the metal bracket The PIN pin connection of the metal bracket 11 is laser welded; the connection points of different circuits inside the metal bracket 11 are laser cut; finally, the epoxy resin 4 is used to fill and package; the metal bracket 11 is designed with a spring card slot for installing the PIN pin of the metal bracket 11, which can effectively realize the automatic assembly of the infrared emitting unit 9, the infrared receiving unit 14 and the metal bracket 11, and effectively improve the production efficiency; when filling, the epoxy resin 4 passes through the laser cutting groove 12 into the groove, the plug groove 16, and the detection inner box 15 and is blocked by the sponge 10, which effectively prevents the epoxy resin 4 from wrapping the lens part of the infrared emitting unit 9 and the infrared receiving unit 14, blocking the emission and reception of infrared light, thereby preventing dust from entering without affecting the propagation of infrared rays, and further improving the life of the product and the dustproof and waterproof characteristics.

[0028] The integrated transmissive light control sensor adopts a metal bracket 11 to replace the traditional PCB, realizes the automatic insertion and welding of the infrared emitting unit 9 and the infrared receiving unit 14, and effectively improves the production efficiency; through the structural design of inserting the infrared emitting unit 9 and the infrared receiving unit 14 into the sponge 10, the epoxy resin 4 packaging is realized without affecting the propagation of infrared light, effectively preventing the entry of dust, and greatly improving the product life and dustproof and waterproof characteristics.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An integrated transmissive light control sensor, comprising a plastic outer box (3) that is transmissive to infrared light, characterized in that: A pair of through holes is provided on the bottom plate of the plastic outer box (3), and a pair of infrared light transparent detection outer boxes (1) are integrally formed in the pair of through holes respectively. A plastic inner box (8) is provided on the bottom plate of the plastic outer box (3), and a metal bracket (11) is provided on the upper end surface of the plastic inner box (8). A pair of through holes is provided on the top of the plastic inner box (8), and a pair of infrared light non-transparent detection inner boxes (15) are integrally formed in the pair of through holes respectively. The end surfaces of the pair of detection inner boxes (15) close to each other are provided with lens grooves (7). The pair of detection inner boxes (15) are respectively inserted into the pair of detection outer boxes (1). The interiors of the pair of detection inner boxes (15) are respectively plugged with infrared emitting units (9) and infrared receiving units (14), and the infrared emitting units (9) and infrared receiving units (14) are respectively connected. The lens parts of the receiving unit (14) are respectively arranged in two lens grooves (7); a pair of sponges (10) respectively located above the infrared emitting unit (9) and the infrared receiving unit (14) are respectively inserted into the interior of the pair of detection inner boxes (15); the PIN pins of the infrared emitting unit (9) and the infrared receiving unit (14) respectively penetrate the pair of sponges (10) and are connected to the metal bracket (11) through a clamping structure; a plug groove (16) is opened at the right end of the plastic outer box (3), and a plug (6) is installed in the plug groove (16); the interior of the plastic outer box (3) is filled with epoxy resin (4), and the epoxy resin (4) is filled and infiltrated into the space of the detection inner box (15) located above the sponge (10); the PIN pins of the plug (6) are welded to the metal bracket (11).

2. The integrated transmission type light control sensor according to claim 1, characterized in that: The upper end surface of the plastic inner box (8) is provided with a plurality of grooves of different shapes, and the grooves are filled with epoxy resin (4).

3. The integrated transmission type light control sensor according to claim 1, characterized in that: Two isolation plates (5) are fixedly arranged at the bottom of the plug slot (16), and the two isolation plates (5) are both located between two adjacent PIN pins of the plug (6).

4. The integrated transmission type light control sensor according to claim 1, characterized in that: The clamping structure comprises a spring sheet (13) and a spring sheet slot. The upper end surface of the metal bracket (11) is provided with two pairs of spring sheet slots on the left and right sides, and a pair of spring sheets (13) are respectively fixed in the two pairs of spring sheet slots. The PIN pins of the infrared transmitting unit (9) and the infrared receiving unit (14) are respectively clamped between each pair of spring sheets (13) on the left and right sides.

5. The integrated transmission type light control sensor according to claim 1, characterized in that: The front and rear end surfaces of the left end of the plastic outer box (3) are integrally formed with fixing ears (2), and the upper end surface of the fixing ears (2) is provided with a plug hole for screws to pass through.

6. The integrated transmission type light control sensor according to claim 5, characterized in that: The upper end surfaces of the pair of fixing ears (2) are each provided with four triangular grooves located at the four corners of the fixing ears (2), and the inner wall of the triangular groove close to the insertion hole is an arc surface coaxial with the insertion hole.

7. The integrated transmission type light control sensor according to claim 1, characterized in that: The upper end surface of the metal bracket (11) is provided with a laser cutting groove (12), and the laser cutting groove (12) is located at the connection point of different circuits inside the metal bracket (11).

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