Packaging structure of infrared sensor

Abstract

The utility model discloses a packaging structure of an infrared sensor, which comprises a base, the top of the base is fixedly connected with a fixed seat, the inner side wall of the fixed seat is fixedly connected with a matched circuit board, and the top of the matched circuit board is provided with an infrared sensitive element. By arranging the clamping sleeve, the first spring, the clamping ball, the clamping groove and other assemblies, the clamping sleeve is pushed upwards to compress the first spring, the sliding block abutting against the clamping ball moves to the position above the cavity, the protective cover is installed outside the fixing base in a sleeving mode, the clamping sleeve is loosened, the first spring rebounds, the sliding block extrudes the clamping ball into the clamping groove, the clamping ball abuts against the clamping groove, and the clamping ball is clamped in the clamping groove. The protective cover can be fixedly installed outside the fixing base, the protective cover can be pulled out of the fixing base by pushing the clamping sleeve upwards again, compared with an existing welding packaging mode, installation and disassembly are more convenient, damage to internal elements caused by violent disassembly are avoided, and the protective cover can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of infrared sensors, in particular to a packaging structure of an infrared sensor. Background Art

[0002] Infrared sensor is a kind of sensor that uses infrared rays to process data. It has the advantages of high sensitivity and is often used for non-contact temperature measurement, gas composition analysis and non-destructive testing. It is widely used in the fields of medicine, military, space technology and environmental engineering. For example, the thermal image of the human body surface temperature measured by infrared sensor at a long distance can find the parts with abnormal temperature.

[0003] In the prior art, when the infrared sensor is packaged, the protective cover and the base are mostly assembled by welding. When the infrared sensor fails and needs to be replaced or repaired, it can only be destroyed and disassembled, and then a new protective cover is replaced and re-welded. The operation is very inconvenient. Violent disassembly can easily damage internal components and the removed protective cover cannot be reused, resulting in waste. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the prior art, when the infrared sensor is packaged, the protective cover and the base are mostly assembled by welding. When the infrared sensor fails and needs to be replaced or repaired, it can only be destroyed and disassembled, and then a new protective cover is replaced and re-welded. The operation is very inconvenient, and violent disassembly is easy to damage the internal components and the removed protective cover cannot be reused, resulting in waste.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a packaging structure of an infrared sensor, including a base, a fixing seat is fixedly connected to the top of the base, a matching circuit board is fixedly connected to the inner side wall of the fixing seat, an infrared sensitive element is arranged on the top of the matching circuit board, a protective cover is arranged on the outside of the fixing seat, a plurality of cavities are arranged around the outer side wall of the protective cover, a plurality of cavities are arranged inside each of the cavities, a plurality of through holes are arranged on the inner side wall of the protective cover and located at the positions of the plurality of cavities, the diameters of the plurality of through holes are slightly smaller than the diameters of the blocking balls, the blocking balls penetrate the through holes and extend to the inside of the protective cover, a card slot is arranged around the outer side wall of the fixing seat, and the card slot matches the plurality of card balls;

[0006] A first limit block is fixedly connected to the outer wall of the protective cover, a first spring is fixedly connected to the bottom of the first limit block, and the first spring is sleeved on the outside of the protective cover, a clamping sleeve is sleeved on the outside of the first limit block and the first spring, a second limit block and a sliding block are fixedly connected to one side of the surface of the clamping sleeve, the second limit block is tightly abutted against the first limit block, the top of the sliding block is fixedly connected to the bottom end of the first spring, one side of the surface of the sliding block is abutted against the outer surface of the clamping ball, and one side of the surface of the sliding block is slidably connected to the outer wall of the protective cover.

[0007] Preferably, a plurality of dampers are fixedly connected around the bottom of the infrared sensitive element, the bottom ends of the plurality of dampers are fixedly connected to the top of the matching circuit board, a second spring is sleeved on the outside of the plurality of dampers, the two ends of the second spring are respectively fixedly connected to the bottom of the infrared sensitive element and the top of the matching circuit board, the second spring and the damper can provide buffering for the infrared sensitive element, reduce vibration, and extend its service life.

[0008] Preferably, a telescopic tube is fixedly connected to the bottom center of the infrared sensitive element, the bottom end of the telescopic tube is fixedly connected to the top of the matching circuit board, a wire is arranged inside the telescopic tube, and the matching circuit board and the infrared sensitive element are electrically connected through the wire.

[0009] Preferably, a lens groove is provided on the top of the protective cover, a filter is installed inside the lens groove, a lens cover is threadedly installed on the outside of the protective cover, the inner bottom of the lens cover is tightly against the top of the filter, and the threaded installation facilitates the removal and replacement of the filter.

[0010] Preferably, a spring pad is fixedly connected to the inner bottom of the lens groove, and the elastic force of the spring pad can make the top surface of the filter and the lens cover abut against each other, and can also provide a buffering effect.

[0011] Preferably, a plurality of pins are fixedly connected to the bottom of the matching circuit board, and the bottom ends of the plurality of pins extend through and extend to the outside of the base.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model sets components such as a clamping sleeve, a first spring, a clamping ball and a clamping groove. The clamping sleeve is pushed upward to compress the first spring, so that the sliding block abutting the clamping ball moves to the top of the cavity, and the protective cover is sleeved and installed on the outside of the fixed seat. The clamping sleeve is loosened, and the first spring rebounds to make the sliding block squeeze the clamping ball into the clamping groove and press the clamping ball tightly. The protective cover can be fixedly installed on the outside of the fixed seat, and the clamping sleeve can be pushed upward again to pull the protective cover off the fixed seat. Compared with the existing welding packaging method, installation and disassembly are more convenient, and damage to internal components caused by violent disassembly can be avoided. Moreover, it can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a packaging structure of an infrared sensor of the utility model;

[0015] Figure 2 It is a partial stereogram of a packaging structure of an infrared sensor of the utility model;

[0016] Figure 3 It is a partial cross-sectional view of a packaging structure of an infrared sensor of the utility model;

[0017] Figure 4 For this utility model Figure 3 A magnified view of middle;

[0018] Figure 5 For this utility model Figure 3 Enlarged view of middle B;

[0019] Figure 6 The utility model is a structural schematic diagram of the lens cover and the protective cover position of the packaging structure of an infrared sensor.

[0020] In the figure: 1. base; 2. fixing seat; 3. matching circuit board; 4. infrared sensitive element; 5. protective cover; 6. cavity; 7. card ball; 8. card slot; 9. first limit block; 10. first spring; 11. card sleeve; 12. second limit block; 13. sliding block; 14. damper; 15. second spring; 16. telescopic tube; 17. wire; 18. lens slot; 181. spring pad; 19. filter; 20. lens cover; 21. pin. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0022] See also Figures 1 to 5 , a packaging structure of an infrared sensor, comprising a base 1, a fixing seat 2 is fixedly connected to the top of the base 1, a matching circuit board 3 is fixedly connected to the inner side wall of the fixing seat 2, an infrared sensitive element 4 is arranged on the top of the matching circuit board 3, a protective cover 5 is sleeved on the outside of the fixing seat 2, a plurality of cavities 6 are arranged around the outer side wall of the protective cover 5, a plurality of cavities 6 are arranged inside each of the plurality of cavities 6, a plurality of through holes are arranged on the inner side wall of the protective cover 5 and located at the positions of the plurality of cavities 6, the diameters of the plurality of through holes are slightly smaller than the diameters of the card balls 7, the card balls 7 penetrate the through holes and extend to the inside of the protective cover 5, a card slot 8 is arranged around the outer side wall of the fixing seat 2, and the card slot 8 matches the plurality of card balls 7;

[0023] A first limit block 9 is fixedly connected to the outer wall of the protective cover 5, a first spring 10 is fixedly connected to the bottom of the first limit block 9, and the first spring 10 is sleeved on the outside of the protective cover 5, a clamping sleeve 11 is sleeved on the outside of the first limit block 9 and the first spring 10, a second limit block 12 and a sliding block 13 are fixedly connected to one side of the surface of the clamping sleeve 11, the second limit block 12 is tightly abutted against the first limit block 9, the top of the sliding block 13 is fixedly connected to the bottom end of the first spring 10, one side of the surface of the sliding block 13 is abutted against the outer surface of the card ball 7, and one side of the surface of the sliding block 13 is slidably connected to the outer wall of the protective cover 5.

[0024] like Figures 1 to 6 As shown, a plurality of pins 21 are fixedly connected to the bottom of the supporting circuit board 3, and the bottom ends of the plurality of pins 21 extend through to the outside of the base 1. A lens groove 18 is provided on the top of the protective cover 5, and a filter 19 is installed inside the lens groove 18. A lens cover 20 is threadedly installed on the outside of the protective cover 5, and the inner bottom of the lens cover 20 is tightly pressed against the top of the filter 19. The threaded installation facilitates the removal and replacement of the filter 19. A spring pad 181 is fixedly connected to the inner bottom of the lens groove 18. The elastic force of the spring pad 181 can make the top surface of the filter 19 press against the lens cover 20, and can also provide a buffering effect. A plurality of dampers are fixedly connected around the bottom of the infrared sensitive element 4. 14, the bottom ends of the multiple dampers 14 are fixedly connected to the top of the matching circuit board 3, and the outsides of the multiple dampers 14 are sleeved with a second spring 15, and the two ends of the second spring 15 are respectively fixedly connected to the bottom of the infrared sensitive element 4 and the top of the matching circuit board 3. The second spring 15 and the damper 14 can provide buffering for the infrared sensitive element 4, reduce shock, and extend its service life. A telescopic tube 16 is fixedly connected to the bottom center of the infrared sensitive element 4, and the bottom end of the telescopic tube 16 is fixedly connected to the top of the matching circuit board 3. A wire 17 is arranged inside the telescopic tube 16, and the matching circuit board 3 and the infrared sensitive element 4 are electrically connected through the wire 17.

[0025] When the utility model is in use, the card sleeve 11 is pushed upward, the sliding block 13 compresses the first spring 10 and slides on the outer wall of the protective cover 5 to the top of the cavity 6, and then the protective cover 5 is sleeved and installed on the outside of the fixed seat 2, and the fixed seat 2 squeezes the card ball 7 to make it retreat into the cavity 6 until the card slot 8 and the card ball 7 match the position, and then the card sleeve 11 is loosened, the first spring 10 rebounds and the sliding block 13 squeezes the card ball 7 back and presses against the outer surface of the card ball 7, at this time The card ball 7 is matched and clamped with the card slot 8, and the protective cover 5 is It can be fixed with the fixing seat 2 by snapping. When the protective cover 5 needs to be removed for inspection, the clamping sleeve 11 is pushed up again and pulled upward. The inner wall of the slot 8 squeezes the card ball 7 and makes the card ball 7 disengage from the slot 8. The protective cover 5 can be removed for inspection. When the filter 19 is damaged, the lens cover 20 threadedly mounted on the outside of the protective cover 5 can be unscrewed to replace the filter 19. No violent disassembly is required, and damage to the internal structure can be avoided. The protective cover 5 can be reused, which is more economical and practical.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A packaging structure of an infrared sensor, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a fixing seat (2), the inner side wall of the fixing seat (2) is fixedly connected to a matching circuit board (3), the top of the matching circuit board (3) is provided with an infrared sensitive element (4), the outer sleeve of the fixing seat (2) is provided with a protective cover (5), the outer side wall of the protective cover (5) is surrounded by a plurality of cavities (6), the interiors of the plurality of cavities (6) are provided with a card ball (7), the inner side wall of the protective cover (5) is provided with a plurality of through holes at the positions of the plurality of cavities (6), the diameters of the plurality of through holes are slightly smaller than the diameters of the card balls (7), the card balls (7) penetrate the through holes and extend to the interior of the protective cover (5), the outer side wall of the fixing seat (2) is surrounded by a card slot (8), the card slot (8) matches the plurality of card balls (7); A first limit block (9) is sleeved and fixedly connected on the outer wall of the protective cover (5); a first spring (10) is fixedly connected to the bottom of the first limit block (9), and the first spring (10) is sleeved on the outside of the protective cover (5); a clamping sleeve (11) is sleeved on the outside of the first limit block (9) and the first spring (10); a second limit block (12) and a sliding block (13) are fixedly connected on one side of the surface of the clamping sleeve (11); the second limit block (12) is tightly abutted against the first limit block (9); the top of the sliding block (13) is fixedly connected to the bottom of the first spring (10); one side of the surface of the sliding block (13) is abutted against the outer surface of the clamping ball (7), and one side of the surface of the sliding block (13) is slidably connected to the outer wall of the protective cover (5).

2. The packaging structure of an infrared sensor according to claim 1, characterized in that: A plurality of dampers (14) are fixedly connected around the bottom of the infrared sensitive element (4), the bottom ends of the plurality of dampers (14) are fixedly connected to the top of the matching circuit board (3), and a second spring (15) is sleeved on the outside of the plurality of dampers (14), and the two ends of the second spring (15) are respectively fixedly connected to the bottom of the infrared sensitive element (4) and the top of the matching circuit board (3).

3. The packaging structure of an infrared sensor according to claim 1, characterized in that: A telescopic tube (16) is fixedly connected to the center of the bottom of the infrared sensitive element (4); the bottom end of the telescopic tube (16) is fixedly connected to the top of the matching circuit board (3); a wire (17) is arranged inside the telescopic tube (16); and the matching circuit board (3) and the infrared sensitive element (4) are electrically connected via the wire (17).

4. The packaging structure of an infrared sensor according to claim 1, characterized in that: The top of the protective cover (5) is provided with a lens groove (18), a filter (19) is installed inside the lens groove (18), and a lens cover (20) is threadedly installed outside the protective cover (5), and the inner bottom of the lens cover (20) is tightly abutted against the top of the filter (19).

5. The packaging structure of an infrared sensor according to claim 4, characterized in that: A spring pad (181) is fixedly connected to the inner bottom of the lens groove (18).

6. The packaging structure of an infrared sensor according to claim 1, characterized in that: A plurality of pins (21) are fixedly connected to the bottom of the matching circuit board (3), and the bottom ends of the plurality of pins (21) extend through and extend to the outside of the base (1).

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