CN220104993U - A gas flow sensor packaging structure - Google Patents

Abstract

The utility model relates to the technical field of sensor packaging structures, and particularly discloses a gas flow sensor packaging structure which comprises a main body, a fan, a clamping sleeve, a chip, a metal rod and a heat insulation plate, wherein a ventilating plate is arranged at the upper end of the main body, the fan is arranged in the middle of the back of the ventilating plate, a fixing plate is fixedly connected between a first cavity and a second cavity, the chip is arranged in the middle of the fixing plate, a plurality of second grooves are formed in the surface of the middle of the main body, the fixing rod is fixedly connected with the main body, torsion springs are symmetrically arranged on the surface of the fixing rod, one end of each torsion spring is fixedly connected with the main body, an inclined wedge is fixedly connected with the other end of each torsion spring, a movable shaft is arranged at the upper end of each inclined wedge, the top end of each movable shaft is nested on the surface of the fixing rod, and the clamping sleeve is arranged on the surface of the lower end of the main body.

Description

A gas flow sensor packaging structure

Technical field

The utility model relates to the technical field of sensor packaging structures, specifically a gas flow sensor packaging structure.

Background technique

A gas flow sensor is a device that detects specific components in gas through a certain principle and converts the detected signal into an appropriate electrical signal. As humans pay more and more attention to environmental protection, pollution, public safety and other issues, as well as people's requirements for living standards continue to improve, gas sensors are widely used in different fields.

Chinese utility model patent specification CN210635719U discloses such a sensor structure. The structure includes a shell and a substrate. The shell and the substrate are enclosed to form the packaging structure. This utility model reduces the difficulty of opening holes in the shell, and at the same time , by arranging at least one microhole in the thinned part, foreign matter in the environment can be effectively prevented from entering the packaging structure, but this structure cannot effectively adjust the depth of the sensor insertion into the device according to the size of the space within the device, which is not conducive to ensuring the sensor The working accuracy is very high, and it is difficult to exchange the air inside the device with the outside air only through the micropores, making it difficult to detect external environmental gases in a timely and effective manner.

Utility model content

The purpose of this utility model is to provide a gas flow sensor packaging structure to solve the problems raised in the above background technology.

In order to achieve the above purpose, the present utility model provides the following technical solution: a gas flow sensor packaging structure, including a main body, a fan, a ferrule, a chip, a metal rod and a heat insulation plate. The upper end of the main body is provided with a ventilation plate. The upper surface is provided with a first slot, the lower end of the ventilation plate is placed in the first slot, a fan is provided in the middle of the back of the ventilation plate, and a first cavity and a second cavity are provided inside the main body. A fixed plate is fixedly connected between the first cavity and the second cavity. A chip is provided in the middle of the fixed plate. Several metal heads are penetrated by the fixed plate. The chip and the metal heads are fixedly connected by metal wires. A metal rod is connected to the lower end of the metal head. The metal rod is placed in the second cavity. The bottom end of the metal rod is fixedly connected to the receiving plate through the metal head. There are several second slots on the surface of the middle part of the main body. The upper end of the second slot is provided with a fixed rod, the fixed rod is fixedly connected to the main body, the fixed rod is symmetrically provided with a torsion spring on the surface, one end of the torsion spring is fixedly connected to the main body, and the other end of the torsion spring is fixedly connected to Inclined wedge block, the upper end of the inclined wedge block is provided with a movable shaft, the top end of the movable shaft is nested on the surface of the fixed rod, the movable shaft is in sliding connection with the surface of the fixed rod, and the lower end surface of the main body is provided with a clamp sleeve. A plurality of third slots are provided on the surface of the ferrule, and a rubber pad is provided on the upper slope of the ferrule.

Preferably, the upper and lower ends of the metal head are placed inside the first cavity and the second cavity respectively.

Preferably, the side wall of the first cavity is provided with several air outlets.

Preferably, several heat-insulating plates are provided in the second cavity, and the heat-insulating plates are fixedly connected to the inner wall of the cavity.

Preferably, the outer surface of the main body and the inner surface of the ferrule are provided with threads, and the inside of the ferrule and the outside of the main body are connected by threads.

Compared with the existing technology, the beneficial effects of this utility model are: there is a fan above the main body, and air outlets are provided on both sides, which can be detected by circulating gas. The surface of the main body is provided with inclined wedges and clamps, so that the structure can It has a wide range of applicability when fixed on equipment at different depths. There are several heat insulation boards in the cavity to prevent excessive gas temperature from affecting signal transmission. Multiple heat insulation boards are used for layer-by-layer heat insulation.

Description of the drawings

Figure 1 is a schematic diagram of the front three-dimensional structure of the utility model;

Figure 2 is a partial three-dimensional structural schematic diagram of the utility model in a top view;

Figure 3 is a schematic cross-sectional structural diagram of the utility model;

Figure 4 is a partial three-dimensional structural diagram of the utility model.

In the picture: 1. Main body; 2. Ventilation plate; 3. Fan; 4. Air outlet; 5. Card sleeve; 6. Receiving plate; 7. First slot; 8. Second slot; 9. Third opening Slot; 10. Chip; 11. Fixed plate; 12. Metal wire; 13. Metal head; 14. Metal rod; 15. Fixed rod; 16. Movable shaft; 17. Torsion spring; 18. Inclined wedge; 19. Chapter One cavity; 20, second cavity; 21, heat insulation plate; 22, rubber pad; 23, thread.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the orientation or positional relationship shown in the drawings, and only It is intended to facilitate the description of the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "installation", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection. , it can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Please refer to Figures 1-4. The present utility model provides a technical solution: a gas flow sensor packaging structure, including a main body 1, a fan 3, a ferrule 5, a chip 10, a metal rod 14 and a heat shield 21. The upper end of the main body 1 A ventilation plate 2 is provided, a first slot 7 is provided on the upper surface of the main body 1, the lower end of the ventilation plate 2 is placed in the first slot 7, a fan 3 is provided in the middle of the back of the ventilation plate 2, and a first cavity is provided inside the main body 1 19 and the second cavity 20. A fixing plate 11 is fixedly connected between the first cavity 19 and the second cavity 20. A chip 10 is arranged in the middle of the fixing plate 11. There are several metal heads 13 passing through the fixing plate 11. The chip 10 It is fixedly connected to the metal head 13 through a metal wire 12. The lower end of the metal head 13 is connected to a metal rod 14. The metal rod 14 is placed in the second cavity 20. The bottom end of the metal rod 14 is fixedly connected to the receiving plate 6 through the metal head 13. The main body 1. There are a plurality of second slots 8 on the middle surface. The upper end of the second slots 8 is provided with a fixed rod 15. The fixed rod 15 is fixedly connected to the main body 1. The fixed rod 15 is symmetrically provided with a torsion spring 17 on its surface. One end of the torsion spring 17 is connected to the main body 1. The main body 1 is fixedly connected, and the other end of the torsion spring 17 is fixedly connected with an inclined wedge 18. The upper end of the inclined wedge 18 is provided with a movable shaft 16. The top of the movable shaft 16 is nested on the surface of the fixed rod 15. The movable shaft 16 and the fixed rod 15 surface are attached to each other. The lower end surface of the main body 1 is provided with a ferrule 5, the surface of the ferrule 5 is provided with a plurality of third slots 9, and the upper slope of the ferrule 5 is provided with a rubber pad 22.

Further, the upper and lower ends of the metal head 13 are placed inside the first cavity 19 and the second cavity 20 respectively.

Furthermore, several air outlets 4 are provided on the side wall of the first cavity 19 to facilitate gas circulation.

Furthermore, the second cavity 20 is provided with several heat shielding plates 21 . The heat shielding plates 21 are fixedly connected to the inner wall of the second cavity 20 to prevent excessive gas temperature from affecting the signal transmission of the metal rod 14 .

Furthermore, the outer surface of the main body 1 and the inner surface of the ferrule 5 are provided with threads 23, and the inside of the ferrule 5 and the outer surface of the main body 1 are connected through the threads 23.

Working principle: Put the structure into the appropriate position of the equipment hole, rotate the ferrule 5 through the third slot 9, so that the bottom surface of the inclined wedge 18 fits the inner wall of the equipment, squeeze the rubber pad 22 on the inclined surface of the ferrule 5, and make the structure It is fixedly connected to the equipment, rotates the fan 3, inhales gas, and discharges it through the air outlet 4, so that the gas circulates into the first cavity 19 for detection.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention. , substitutions and modifications, the scope of the present utility model is limited by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a gas flow sensor packaging structure, includes main part (1), fan (3), cutting ferrule (5), chip (10), metal pole (14) and heat insulating board (21), its characterized in that: the utility model discloses a novel fan, including main part (1), ventilation board (2), main part (1) upper end is equipped with ventilation board (2), main part (1) upper surface is equipped with first fluting (7), ventilation board (2) lower extreme is arranged in first fluting (7), be equipped with fan (3) in the middle of ventilation board (2) the back, main part (1) inside is equipped with first cavity (19) and second cavity (20), fixedly connected with fixed plate (11) between first cavity (19) and second cavity (20), be equipped with chip (10) in the middle of fixed plate (11), fixed plate (11) run through a plurality of metal head (13), chip (10) are connected through metal wire (12) fixed, metal head (13) lower extreme is connected with metal pole (14), in second cavity (20) are arranged in to metal pole (14), metal pole (14) bottom is through metal head (13) and receiver plate (6) fixed connection, main part (1) middle surface is equipped with a plurality of second fluting (8), second fluting (8) are equipped with torsion spring (17) fixed connection with main part (1) upper end (17), the novel anti-theft device is characterized in that an inclined wedge block (18) is fixedly connected to the other end of the torsion spring (17), a movable shaft (16) is arranged at the upper end of the inclined wedge block (18), the top end of the movable shaft (16) is nested on the surface of the fixed rod (15), the movable shaft (16) is in fit sliding connection with the surface of the fixed rod (15), a clamping sleeve (5) is arranged on the surface of the lower end of the main body (1), a plurality of third grooves (9) are formed in the surface of the clamping sleeve (5), and a rubber pad (22) is arranged on the upper inclined surface of the clamping sleeve (5).

2. The gas flow sensor package of claim 1, wherein: the upper end and the lower end of the metal head (13) are respectively arranged in the first cavity (19) and the second cavity (20).

3. The gas flow sensor package of claim 1, wherein: the side wall of the first cavity (19) is provided with a plurality of air outlets (4).

4. The gas flow sensor package of claim 1, wherein: a plurality of heat insulation boards (21) are arranged in the second cavity (20), and the heat insulation boards (21) are fixedly connected with the inner wall of the second cavity (20).

5. The gas flow sensor package of claim 1, wherein: the outer surface of the main body (1) and the inner surface of the cutting sleeve (5) are provided with threads (23), and the inner side of the cutting sleeve (5) is connected with the outer side of the main body (1) through the threads (23).