CN213336510U

CN213336510U - TO base pyroelectric sensor

Info

Publication number: CN213336510U
Application number: CN202022707589.2U
Authority: CN
Inventors: 张磊
Original assignee: Rizhao Kejin Electronic Technology Co ltd
Current assignee: Rizhao Kejin Electronic Technology Co ltd
Priority date: 2020-11-21
Filing date: 2020-11-21
Publication date: 2021-06-01
Anticipated expiration: 2030-11-21

Abstract

The utility model discloses a TO base pyroelectric sensor, including the TO base, the middle part fixed mounting of TO base upper end has the pipe cap, the downside fixed mounting of the outer end of pipe cap has the guard circle, the lower extreme fixed mounting of TO base has the pin, the pin equidistance distributes at the lower extreme of TO base, the pin extends TO TO base upper end, the middle part fixed mounting of pipe cap upper end has the light filter, the outside fixed mounting of light filter has the stationary blade, stationary blade and light filter looks adaptation, the fixed mouth of wearing that is provided with in upper end of TO base, the extension end and the mouth of wearing looks adaptation of pin. This TO base pyroelectric sensor through installation TO base for all parts can set up and install on the TO base, have avoided processing gasket and the effectual size that reduces this pyroelectric sensor of assembly gasket, and the rethread recess can realize chip and sensing element's space isolation, can effectively avoid thermal interference TO realize inside heat balance.

Description

TO base pyroelectric sensor

Technical Field

The utility model relates TO the technical field, specifically be a TO base pyroelectric sensor.

Background

The pyroelectric sensor is also called as a human body infrared sensor and is widely applied to the infrared fields of anti-theft alarm, visitor notification, non-contact switch and the like, the piezoelectric ceramic dielectric can keep a polarization state after being polarized, the spontaneous polarization is called as spontaneous polarization, the spontaneous polarization is reduced along with the temperature rise, and the temperature at the Curie point is reduced to zero, so when the material is subjected to infrared radiation and the temperature rises, the surface charge is reduced, namely, a part of charge is released, the material is called as pyroelectric, the released charge can be converted into voltage output through an amplifier, the working principle of the pyroelectric sensor is that when the radiation continuously acts on a pyroelectric element, the surface charge is not released any more when the surface charge reaches balance, and therefore, the pyroelectric sensor cannot detect constant infrared radiation.

The traditional pyroelectric sensor adopts a universal base, a ceramic gasket and a plastic gasket TO form a space for a chip, and then is connected with an induction element TO lead out a signal, but the pyroelectric sensor in the prior art has the following defects, the universal TO base needs TO process the gasket and assemble the gasket, the assembly process of the current gasket is complex and high in cost, the gasket is arranged in the current product, and the size is large.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is TO provide a TO base pyroelectric sensor TO propose current pyroelectric sensor in solving above-mentioned background art and adopt general base and ceramic gasket, plastic gasket TO form the space and give the chip, then reconnection response unit draws forth the signal, but prior art pyroelectric sensor exists following not enough, and general TO base need process gasket, assembly gasket, and current gasket assembly process is complicated and with high costs, current product embeds the gasket, the big problem of size.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a TO base pyroelectric sensor, includes the TO base, the middle part fixed mounting of TO base upper end has the pipe cap, the downside fixed mounting of the outer end of pipe cap has the guard circle, the lower extreme fixed mounting of TO base has the pin, the pin equidistance distributes the lower extreme at the TO base, the pin extends TO TO base upper end, the middle part fixed mounting of pipe cap upper end has the light filter, the outside fixed mounting of light filter has the stationary blade, stationary blade and light filter looks adaptation.

Preferably, a through hole is fixedly formed in the upper end of the TO base, the extending end of the pin is matched with the through hole, the pin extends upwards through the extending hole, and a groove is fixedly formed in the middle of the upper end of the TO base.

Preferably, the upper end of the TO base is located inside the pipe cap and fixedly provided with a PCB, the upper end of the PCB is fixedly provided with a fixing hole, and the extending end of the pin is matched and fixedly connected with the fixing hole.

Preferably, the middle part of the upper end of the PCB is fixedly provided with a bump, and the bumps are symmetrically distributed on the upper end of the PCB.

Preferably, the upper end of the bump is fixedly provided with an induction element, and the induction element is matched and fixedly connected with the bump.

Preferably, the chip is fixedly mounted at the upper end inside the PCB, and the PCB is fixedly connected with the TO base.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according TO the TO base pyroelectric sensor, all parts can be arranged on the TO base by installing the TO base, so that a gasket is prevented from being machined and assembled, the size of the pyroelectric sensor is effectively reduced, space isolation between a chip and an induction element can be realized through a groove, thermal interference can be effectively avoided, and internal thermal balance is realized;

2. according TO the TO base pyroelectric sensor, the PCB can be fixedly connected with the pins by arranging the fixing holes, and gaps can be reserved in the fixed connection between the PCB and the TO base when the pins penetrate through the penetrating holes, so that the PCB can be further cooled;

3. this TO base pyroelectric sensor, through installing the lug, two lugs are located the both sides of PCB board upper end TO with PCB board fixed connection, with sensing element looks adaptation, improved this pyroelectric sensor's connection effect, and the pyroelectric sensor installation of being more convenient for.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of the three-dimensional split structure of the TO base of the present invention;

fig. 3 is a schematic structural diagram of the section of the TO base of the present invention;

fig. 4 is a schematic view of the three-dimensional structure of the PCB of the present invention.

In the figure: 1. a TO base; 2. a pipe cap; 3. a guard ring; 4. a pin; 5. an optical filter; 6. a fixing sheet; 7. perforating; 8. a groove; 9. a PCB board; 10. a fixing hole; 11. a bump; 12. an inductive element; 13. and (3) a chip.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a TO base pyroelectric sensor, includes TO base 1, and the middle part fixed mounting of TO base 1 upper end has pipe cap 2, and the downside fixed mounting of the outer end of pipe cap 2 has guard circle 3, and the lower extreme fixed mounting of TO base 1 has

4, and 4 equidistance of pin distribute at the lower extreme of TO base 1, and pin 4 extends TO TO base 1 upper end, and the middle part fixed mounting of pipe cap 2 upper end has light filter 5, and the outside fixed mounting of light filter 5 has stationary blade 6,

stationary blade

6 and 5 looks adaptations of light filter.

Further, fixed being provided with in TO base 1's upper end wears mouthful 7, the extension end of pin 4 with wear mouthful 7 looks adaptation, pin 4 passes the extension mouth and upwards extends, the middle part of TO base 1 upper end is fixed and is provided with recess 8, through installation TO base 1 for all parts can set up TO install on TO base 1, have avoided processing gasket and assembly gasket, and effectual this pyroelectric sensor's that reduces size, rethread recess 8 can realize the space isolation of chip 13 and inductive element 12, can effectively avoid thermal interference, realizes inside thermal balance.

Further, the inside fixed mounting that TO base 1's upper end is located cap 2 has PCB board 9, and the upper end fixed mounting of PCB board 9 has fixed orifices 10, and pin 4's extension end and fixed orifices 10 looks adaptation fixed connection through setting up fixed orifices 10 for PCB board 9 can with pin 4 fixed connection, pass through at pin 4 and wear mouthful 7 and leave the gap in can making PCB board 9 and TO base 1 fixed connection, can further dispel the heat TO PCB board 9.

Further, the middle part fixed mounting of PCB board 9 upper end has lug 11, and lug 11 symmetric distribution is in the upper end of PCB board 9, and through installing lug 11, two lugs 11 are located the both sides of PCB board 9 upper end to with PCB board 9 fixed connection, with inductive element 12 looks adaptation, improved this pyroelectric sensor's linkage effect, and the pyroelectric sensor installation of being more convenient for.

Further, the upper end fixed mounting of lug 11 has sensing element 12, and sensing

element

12 and 11 looks adaptations fixed connection of lug are through installing sensing element 12 for there is certain distance between light filter 5 and the sensing element 12, can promote PCB board 9 and sensing element 12's heat-conduction, has protected pyroelectric sensor through promoting heat-conducting efficiency.

Further, the inside upper end fixed mounting of PCB board 9 has chip 13, and PCB board 9 and TO base 1 fixed connection are through installing pin 4 TO set up wearing mouthful 7, make most pin 4 can carry out the insertion operation that corresponds, have promoted pyroelectric sensor's assembly speed, and can promote pyroelectric sensor's stability of connecting.

The working principle is as follows: firstly, by installing the TO base 1, all parts can be arranged and installed on the TO base 1, so that a gasket is prevented from being processed and assembled, the size of the pyroelectric sensor is effectively reduced, then, the space isolation of a chip 13 and an induction element 12 can be realized through a groove 8, the thermal interference can be effectively avoided, the internal thermal balance is realized, by arranging a fixing hole 10, the PCB 9 can be fixedly connected with a pin 4, a gap can be reserved in the fixed connection between the PCB 9 and the TO base 1 when the pin 4 passes through a through hole 7, the PCB 9 can be further radiated, by installing the pin 4 and arranging the through hole 7, most of the pins 4 can be correspondingly inserted, the assembly speed of the pyroelectric sensor is improved, the connection stability of the pyroelectric sensor can be improved, then, the PCB 9 is fixedly connected with the pin 4, and finally, the TO base 1 is fixedly connected with the pipe cap 2, so that the convenience in installation of the pyroelectric sensor is embodied.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A TO base pyroelectric sensor, comprising a TO base (1), characterized in that: middle part fixed mounting of TO base (1) upper end has pipe cap (2), the downside fixed mounting of the outer end of pipe cap (2) has guard circle (3), the lower extreme fixed mounting of TO base (1) has pin (4), pin (4) equidistance distributes the lower extreme at TO base (1), pin (4) extend TO TO base (1) upper end, the middle part fixed mounting of pipe cap (2) upper end has light filter (5), the outside fixed mounting of light filter (5) has stationary blade (6), stationary blade (6) and light filter (5) looks adaptation.

2. The TO pedestal pyroelectric sensor as recited in claim 1 wherein: the upper end of the TO base (1) is fixedly provided with a penetrating opening (7), the extending end of the pin (4) is matched with the penetrating opening (7), the pin (4) penetrates through the extending opening TO extend upwards, and the middle of the upper end of the TO base (1) is fixedly provided with a groove (8).

3. The TO pedestal pyroelectric sensor as recited in claim 1 wherein: the upper end of TO base (1) is located the inside fixed mounting of pipe cap (2) and has PCB board (9), the upper end fixed mounting of PCB board (9) has fixed orifices (10), the extension end and the fixed orifices (10) looks adaptation fixed connection of pin (4).

4. The TO pedestal pyroelectric sensor as recited in claim 3 wherein: the middle part of the upper end of the PCB (9) is fixedly provided with a lug (11), and the lugs (11) are symmetrically distributed at the upper end of the PCB (9).

5. The TO pedestal pyroelectric sensor as recited in claim 4 wherein: the upper end fixed mounting of lug (11) has inductive element (12), inductive element (12) and lug (11) looks adaptation fixed connection.

6. The TO pedestal pyroelectric sensor as recited in claim 3 wherein: the upper end fixed mounting of PCB board (9) inside has chip (13), PCB board (9) and TO base (1) fixed connection.