CN114953916A

CN114953916A - Automobile defogging sensor

Info

Publication number: CN114953916A
Application number: CN202210708450.0A
Authority: CN
Inventors: 杜甜; 朱增魁; 张冉
Original assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Current assignee: Xiaogan Huagong Gaoli Electron Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-08-30

Abstract

The invention provides an automobile defogging sensor which comprises a shell and a circuit board, wherein the shell is buckled on the circuit board, a pin inserting seat for installing pin arranging is arranged on one side of the circuit board, a detection chip for detecting the temperature and the humidity in a cab is connected to one side, far away from the pin inserting seat, of the circuit board, a buckle for fixing the detection chip is arranged on the circuit board and is positioned at the detection chip, an opening is formed in the shell and corresponds to the detection chip, and a fixing clamping groove matched and connected with the buckle is formed in the shell and corresponds to the buckle. According to the automobile defogging sensor, the detection chip is fixed through the buckle structure design, and meanwhile, the circuit board and the shell are limited and fixed, so that the stability of the automobile defogging sensor structure is ensured; and this car defogging sensor compact structure, it is small, but the direct mount is on car windshield, through circuit board joinable to vehicle air conditioning system, with the signal feedback that the detection chip was collected to guarantee subsequent defogging operation.

Description

Automobile defogging sensor

Technical Field

The invention belongs to the technical field of automobile glass demisting, and particularly relates to an automobile demisting sensor.

Background

Vehicles are one of the most important vehicles in human modern life. Generally, a vehicle is equipped with an air conditioning system to prevent a problem that a window is fogged to obstruct a driver's view when a temperature difference and a humidity difference between inside and outside of the vehicle are large. The existing MCU system detection system of the automobile air conditioner mainly comprises an infrared sensor, has larger volume, needs an angle for aligning with a windshield and has high cost; and the driver meets the problem that the window is hazy in the driving process, and needs to manually start the air conditioning system, so that certain potential safety hazards exist in the process of driving with dispersed attention.

Disclosure of Invention

The invention aims to provide an automobile defogging sensor, which can solve at least part of defects in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an automobile defogging sensor, includes shell and circuit board, the shell lock is on the circuit board, circuit board one side is equipped with the plug pin seat of installation pin gang, keep away from on the circuit board one side of plug pin seat is connected with the detection chip that is used for detecting driver's cabin interior temperature and humidity, lie in on the circuit board detection chip department is equipped with the buckle that is used for fixed detection chip, it is equipped with the opening to correspond detection chip department on the shell, corresponds buckle department on the shell and is equipped with the fixed slot who is connected with the buckle cooperation.

Further, the buckle is W type structure, including the L type section that is located the middle U type section of falling and is located both sides, detect the chip joint in the section below of falling U type, two the vertical lateral wall outside symmetry of L type section is equipped with the buckle barb, the buckle barb corresponds the fixed slot cooperation of side with the shell and is connected.

Furthermore, a triangular support protrusion formed by recessing the outer side to the inner side is arranged at the folding angle of the L-shaped section of the buckle.

Furthermore, be equipped with a plurality of spacing strips along buckle installation direction interval on the opening of shell, spacing strip crimping is on the buckle, and the axis of spacing strip is perpendicular with buckle installation direction.

Furthermore, the opening part of shell is equipped with waterproof ventilated membrane, and this waterproof ventilated membrane is located between buckle and the shell and covers and locate the detection chip top.

Furthermore, the pin header is of a Z-shaped structure, the lower end of the pin header is fixedly installed on the circuit board, and the upper end of the pin header penetrates through the pin header jack at the upper part of the pin header and extends into the butt joint port of the shell.

Furthermore, a limiting block is arranged on the side wall of the needle inserting seat, a connecting opening for the row needle to penetrate through is formed in the side wall of the butt joint opening of the shell, which is close to one side of the needle inserting seat, and the limiting block is clamped in the connecting opening.

Furthermore, a groove is formed in the lower portion of the needle inserting seat corresponding to a folding angle at the lower end of the row needle.

Compared with the prior art, the invention has the beneficial effects that:

(1) the automobile defogging sensor provided by the invention has a compact structure and a small volume, can be directly installed on an automobile windshield and can be connected to an automobile air conditioning system through a circuit board, and the signal collected by the detection chip is fed back to ensure the subsequent defogging operation.

(2) According to the automobile defogging sensor provided by the invention, the detection chip is fixed through the buckle structure, and the circuit board and the shell are limited and fixed through the buckle structure, so that the structural stability of the automobile defogging sensor is ensured.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a defogging sensor for an automobile according to the present invention;

FIG. 2 is a cross-sectional view of an automotive defogging sensor according to the present invention;

FIG. 3 is a schematic diagram of the arrangement of components on a circuit board of the automotive defogging sensor according to the present invention;

FIG. 4 is a schematic view of a clip of the defogging sensor for an automobile according to the present invention.

Description of the reference numerals: 1. a housing; 2. an opening; 3. fixing the clamping groove; 4. a limiting strip; 5. detecting the chip; 6. buckling; 7. a circuit board; 8. a butt joint port; 9. arranging needles; 10. a groove; 11. a needle inserting seat; 12. a limiting block; 13. an interface; 14. a buckle barb; 15. an L-shaped section; 16. an inverted U-shaped section; 17. the triangle supports the bulge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an interference connection or an integral connection; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, fig. 2 and fig. 3, this embodiment provides an automobile defogging sensor, including shell 1 and circuit board 7, shell 1 lock is on circuit board 7, circuit board 7 one side is equipped with the pin hub 11 of installation pin header 9, keep away from on the circuit board 7 one side of pin hub 11 is connected with the detection chip 5 that is used for detecting temperature and humidity in the driver's cabin, lie in on the circuit board 7 detection chip 5 department is equipped with buckle 6 that is used for fixed detection chip 5, it is equipped with opening 2 to correspond detection chip 5 department on the shell 1 to detect chip 5 can accurate detection ambient temperature and humidity, correspond buckle 6 department on the shell 1 and be equipped with the fixed slot 3 of being connected with buckle 6 cooperation. During the assembly, earlier detect chip 5,

plug pin seat

11, 6 fixed mounting of buckle are on circuit board 7, row's needle 9 is installed on plug pin seat 11, again with the circuit board subassembly after the welding install in shell 1, in this process, insert 11 directions of plug pin seat into 8 one sides of interface of shell 1 earlier, make row's needle 9 on the plug pin seat 11 extend to in the interface 8 of shell 1, then with the buckle 6 on the circuit board 7 and the 3 joints of fixed slot on the shell 1, thereby be in the same place circuit board 7 and the assembly of shell 1. This kind of car defogging sensor of this embodiment convenient assembling, compact structure, it is small, but direct mount is on car windshield, can be connected to vehicle air conditioning system through circuit board 7, will detect the signal feedback that the chip was collected to guarantee subsequent defogging operation.

In a specific embodiment, as shown in fig. 3 and 4, the buckle 6 is of a W-shaped structure, and specifically includes an inverted U-shaped section 16 located in the middle and L-shaped sections 15 located at both sides, and the inverted U-shaped section 16 and the two L-shaped sections 15 are integrally formed, so as to ensure the structural strength of the buckle 6. When the buckle 6 of the structure is used for limiting the detection chip 5, the detection chip 5 is connected below the inverted U-shaped section 16 in a clamped mode, namely the inverted U-shaped section 16 of the buckle 6 is pressed on the detection chip 5, and the L-shaped sections 15 on two sides of the buckle 6 are fixedly installed on the circuit board 7, so that the detection chip 5 is further limited and fixed on the circuit board 7, and the stability of the detection chip 5 in the using process is guaranteed. And when the buckle 6 of adopting this structure assembles with shell 1, two the vertical lateral wall outside symmetry of L type section 15 sets up buckle barb 14, buckle barb 14 is connected with the fixed slot 3 cooperation of the corresponding side of shell 1 to carry out fixed connection with buckle 6 and shell 1, and because 6 bottom fixed mounting of buckle are on circuit board 7, and then utilize buckle barb 14 to be connected with fixed slot 3's cooperation and be in the same place circuit board 7 and shell 1 assembly, need not fixed parts such as extra screw and be connected, reduced the assembly process, save the cost.

Preferably, in order to guarantee the stability that buckle 6 and shell 1 are connected, the 15 dog-ear departments of L type section of buckle 6 are equipped with the triangular support that is formed by the outside is sunken to the inboard protruding 17, and protruding 17 can play support and strengthening intensity effect to the lateral wall of buckle 6 through triangular support, when avoiding shell 1 to exert the effort to buckle 6 lateral wall, buckle 6 lateral wall is inwards buckled and is made buckle 6's buckle barb 14 break away from with fixed slot 3.

Optionally, as shown in fig. 1, a plurality of limiting strips 4 are arranged on the opening 2 of the housing 1 at intervals along the installation direction of the buckle 6, the limiting strips 4 are crimped on the buckle 6, the axis of the limiting strips 4 is perpendicular to the installation direction of the buckle 6, the buckle 6 is limited and fixed between the circuit board 7 and the housing 1 through the design of the limiting strips 4, and the installation stability of the buckle 6 is further ensured.

Further, can the opening 2 department of shell 1 sets up waterproof ventilated membrane, and this waterproof ventilated membrane is located between buckle 6 and the shell 1 and covers and locate and detect 5 tops of chip, plays waterproof dustproof effect, has protected and has detected chip 5 to guarantee to detect chip 5's detection precision.

One specific implementation mode, as shown in fig. 2, the pin header 9 is a Z-shaped structure, the lower end of the pin header is fixedly mounted on the circuit board 7, and the upper end of the pin header penetrates through the pin header jack on the upper portion of the pin header 11 and extends into the docking port 8 of the housing 1, so that the docking port 8 of the housing 1 and the circuit board 7 are not on the same plane, the mounting application range of the automobile defogging sensor is increased, and the compact design of the structure of the automobile defogging sensor is facilitated. Furthermore, a groove 10 is formed in the lower portion of the plug pin seat 11 corresponding to a folded angle of the lower end of the flat pin 9, so that the flat pin 9 can be conveniently installed.

Preferably, be equipped with stopper 12 on the lateral wall of plug pin seat 11, be equipped with the interface 13 that supplies row needle 9 to pass on the lateral wall that the interface 8 of shell 1 is close to plug pin seat 11 one side, stopper 12 joint is connected in this interface 13 through the cooperation of limiting block 12 on the plug pin seat 11 and interface 13 on the shell 1 to be in the same place the interface 8 one side of shell 1 is fixed with circuit board 7, has further guaranteed the stability of assembling between shell 1 and the circuit board 7.

The automobile defogging sensor collects environmental information (namely the temperature and the humidity in an automobile cab) through the detection chip 5, the collected signals are sent to the automobile air conditioning MCU system through the circuit board 7, after the air conditioning MCU system judges that defogging is needed, analysis and processing can be carried out according to temperature and humidity data detected by the automobile defogging sensor, two methods are usually adopted to remove fog on a windshield, when the relative humidity in a carriage is very high, good ventilation is kept, dry air outside the automobile is exchanged with moist air in the carriage, and the relative humidity in the carriage is reduced, so that the humidity in the carriage is reduced; directly heating the windshield of the vehicle cabin to raise the temperature of the windshield of the vehicle cabin to be higher than the temperature in the vehicle cabin or accelerating the flow of air in front of the windshield can properly increase the temperature of the windshield and exchange of air in front of the windshield, thereby reducing the relative humidity of the windshield.

The MCU system of the vehicle air conditioner and the electrical connection and matching between the circuit board and the MCU system of the vehicle air conditioner are conventional technical means in the field of defogging of vehicles, and have been introduced in related published patents (e.g. CN109532403A), and are not described herein again.

In conclusion, the automobile defogging sensor provided by the invention fixes the detection chip through the buckle structure design, and simultaneously limits and fixes the circuit board and the shell, so that the structural stability of the automobile defogging sensor is ensured; and this car defogging sensor compact structure, it is small, but the direct mount is on car windshield, through circuit board joinable to vehicle air conditioning system, with the signal feedback that the detection chip was collected to guarantee subsequent defogging operation.

The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.

Claims

1. An automobile defogging sensor, which is characterized in that: the detection device comprises a shell and a circuit board, wherein the shell is buckled on the circuit board, one side of the circuit board is provided with a pin inserting seat for installing a pin header, one side of the pin inserting seat, which is far away from the circuit board, is connected with a detection chip for detecting the temperature and the humidity in a cab, the circuit board is positioned, the detection chip is provided with a buckle for fixing the detection chip, the shell is provided with an opening corresponding to the detection chip, and the shell is provided with a fixed clamping groove connected with the buckle in a matching manner.

2. The automotive defogging sensor recited in claim 1, wherein: the buckle is W type structure, including the L type section that is located middle U type section and is located both sides, detect the chip joint in the U type section below of falling, two the vertical lateral wall outside symmetry of L type section is equipped with the buckle barb, the buckle barb corresponds the fixed slot cooperation of side with the shell and is connected.

3. The automotive defogging sensor recited in claim 2, wherein: the L-shaped section of the buckle is provided with a triangular support bulge formed by sinking the outer side to the inner side.

4. An automotive defogging sensor according to claim 1 wherein: the opening of shell is equipped with a plurality of spacing along buckle installation direction interval, spacing crimping is on the buckle, and the axis of spacing is perpendicular with buckle installation direction.

5. The automotive defogging sensor recited in claim 1, wherein: the opening part of shell is equipped with waterproof ventilated membrane, and this waterproof ventilated membrane is located between buckle and the shell and covers and locate the detection chip top.

6. An automotive defogging sensor according to claim 1 wherein: the pin header is of a Z-shaped structure, the lower end of the pin header is fixedly arranged on the circuit board, and the upper end of the pin header penetrates through the pin header jack at the upper part of the pin header seat and extends into the butt joint port of the shell.

7. The automotive defogging sensor recited in claim 6, wherein: the side wall of the plug pin seat is provided with a limiting block, the side wall of one side, close to the plug pin seat, of the butt joint port of the shell is provided with a plug port for the row pins to penetrate through, and the limiting block is clamped in the plug port.

8. The automotive defogging sensor recited in claim 6, wherein: and a groove is formed in the lower part of the pin inserting seat corresponding to the folding angle at the lower end of the pin header.