CN210603420U

CN210603420U - Waterproof and moistureproof temperature and humidity sensor

Info

Publication number: CN210603420U
Application number: CN201921988659.7U
Authority: CN
Inventors: 韦炳林
Original assignee: Guangzhou Dalin Electronic Technology Co Ltd
Current assignee: Guangzhou Dalin Electronic Technology Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-05-22
Anticipated expiration: 2029-11-18

Abstract

The utility model relates to a sensor technical field, more specifically say, it relates to a dampproofing and waterproofing temperature and humidity sensor, and its technical scheme main points are: including plastic casing and sensing element, sensing element includes the circuit board and fixes at the anterior response chip of circuit board, and circuit board tail portion is connected with the electron line, and sensing element sets up inside plastic casing, plastic casing and sensing element and electron line integrated into one piece. The utility model discloses a temperature and humidity sensor handles through processing equipment, and one shot forming, plastic casing are sealed with sensing element parcel completely, can prevent effectively that temperature and humidity sensor from influencing the problem of test accuracy and life in being in moist environment for a long time, and the mass production of being convenient for simultaneously is favorable to improving production efficiency.

Description

Waterproof and moistureproof temperature and humidity sensor

Technical Field

The utility model relates to a sensor technical field, more specifically say, it relates to a dampproofing and waterproofing temperature and humidity sensor.

Background

The temperature and humidity sensor is one kind of sensor, and can measure the temperature and humidity in air through a detection device and convert the temperature and humidity into electric signals or other required information according to a certain rule for output. The temperature and humidity sensor has the advantages of high test accuracy, simplicity and convenience in operation, high cost performance and the like, and is widely applied to various fields of industrial and agricultural production, daily life and the like.

However, the existing temperature and humidity sensor has poor moisture-proof and moisture-proof capabilities, and is not suitable for being applied in a humid environment. When the sensor works in a humid environment for a long time, water easily permeates along a joint gap between the lead and the shell, and because water has certain conductivity, when the water permeates into the sensing element, the resistance value is directly reduced or unstable, so that signals cannot be accurately transmitted, the accuracy of the temperature and humidity sensor is influenced, when the temperature and humidity sensor is serious, the two electrodes can be completely short-circuited, and the requirements of the temperature and humidity sensor on the work such as environment detection, circuit protection and control cannot be met.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a dampproofing and waterproofing temperature and humidity sensor has waterproof nature good, stable performance's advantage.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a dampproofing and waterproofing temperature and humidity sensor, includes plastic casing and sensing element, sensing element includes the circuit board and fixes at the anterior response chip of circuit board, circuit board end connection has the electron line, sensing element sets up inside the plastic casing, the plastic casing with sensing element and electron line integrated into one piece.

The utility model discloses further set up to: the plastic shell is composed of a flat structure at the front end and a cylindrical structure at the rear end, a clamping groove is formed in the rear end, the circuit board is fixed in the clamping groove, the sensing chip is located in the front end, a sensing hole is formed in the position, corresponding to the sensing chip, of the front end, and the electronic wire extends to the bottom of the plastic shell along the inside of the plastic shell.

The utility model discloses further set up to: the front end is provided with an interface.

The utility model discloses further set up to: epoxy resin is filled around the induction hole and at the joint of the plastic shell and the electronic wire.

To sum up, the utility model discloses following beneficial effect has:

firstly, glue is applied through special processing equipment, the temperature and humidity sensor is processed and formed at one time and is of an integrated structure, so that the hidden danger problem caused by misoperation during manual glue application can be reduced, a uniform standard can be formed during batch production, the product quality can be effectively ensured, and the production efficiency is improved; the plastic shell and the sensing chip and the circuit board in the temperature and humidity sensor are of an integrated structure, and the sensing chip and the circuit board are completely wrapped and sealed in the plastic shell, so that the infiltration of moisture can be effectively prevented, and the moisture resistance of a product is greatly improved; epoxy resin is filled around the sensing chip and at the joint of the plastic shell and the electronic wire, so that water and dust can be further prevented from entering the plastic shell along the joint to cause the damage of the performance of the temperature and humidity sensor, the temperature and humidity sensor has better waterproof and dustproof performance, and can work stably even if being in a humid environment for a long time, and the service life can be prolonged;

secondly, the position, corresponding to the sensing chip, on the plastic shell is flat, so that the contact distance between the sensing chip and the measured environment can be greatly reduced, and the sensing accuracy of the temperature and humidity sensor is improved;

thirdly, the front end of the plastic shell is provided with an interface to adapt to the fact that induction chips with different sizes can be installed, and therefore the requirement for induction chips of different types can be met;

and fourthly, a clamping groove is formed in the rear end of the plastic shell, and the circuit board can be fixed when being placed into the clamping groove, so that the circuit board cannot rotate, and the chips are fixed at the same position.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the present invention.

In the figure: 1. a plastic housing; 101. a front end; 102. a back end; 2. a card slot; 3. a circuit board; 4. an induction chip; 5. an induction hole; 6. an electron beam; 7. an epoxy resin; 8. an interface.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

A waterproof and moistureproof temperature and humidity sensor is shown in figures 1 and 2 and comprises a plastic shell 1, wherein the plastic shell 1 is composed of a flat structure at the front end 101 and a cylindrical structure at the rear end 102, the plastic shell 1 is of a structure with a small front end 101 and a large rear end 102, the front end 101 and the rear end 102 are both of a hollow structure, a clamping groove 2 is fixed in the rear end 102, a circuit board 3 is fixed in the clamping groove 2, an induction chip 4 is welded on the side surface of the top of the circuit board 3, the induction chip 4 is positioned at the position of the front end 101 of the plastic shell 1, an induction hole 5 is arranged at the position, opposite to the induction chip 4, on the front end 101 of the plastic shell 1, an interface 8 is arranged at the position, close to the induction hole 5, so that induction chips 4 with different sizes can be installed, an electronic wire 6 is fixedly connected to the tail part of the circuit board 3, the electronic wire 6 extends to the bottom, the electronic wire 6, the circuit board 3, the induction chip 4 and the plastic shell 1 are of an integrated structure, and epoxy resin 7 is filled around the induction hole 5 and at the joint of the plastic shell 1 and the electronic wire 6.

When in production, the sensing chip 4, the electronic wire 6 and the circuit board 3 of the temperature and humidity sensor are fixedly installed, then the circuit board 3 and the sensing chip 3 are placed in a gluing machine for gluing treatment, the circuit board 3 and the sensing chip 4 are directly processed and formed in one step through the gluing machine, the plastic shell 1 completely wraps and seals the circuit board 3 and the sensing chip 4, the hidden danger problem caused by misoperation when manual gluing treatment is carried out can be reduced, a uniform standard can be formed during batch production, the quality of products can be effectively guaranteed, and the production efficiency is improved; then, the periphery of the induction hole 5 and the joint of the plastic shell 1 and the electronic wire 6 are filled with epoxy resin 7, so that the phenomenon that water vapor and dust enter the plastic shell 1 along the induction hole 5 and the joint to damage an induction element can be further prevented, and the service life of the temperature and humidity sensor can be effectively prolonged.

The position department that the induction chip 4 was placed to the front end 101 of plastic casing 1 sets up to the platykurtic, but the contact distance of induction chip 4 and the environment that is surveyed can significantly reduce, improves the degree of accuracy of temperature and humidity sensor response.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a dampproofing and waterproofing temperature and humidity sensor, includes plastic casing and inductive element, its characterized in that: the induction element comprises a circuit board and an induction chip fixed on the top of the circuit board, the tail of the circuit board is connected with an electronic wire, the induction element is arranged inside the plastic shell, and the plastic shell, the induction element and the electronic wire are integrally formed.

2. The moisture and humidity sensor of claim 1, wherein: the plastic shell is composed of a flat structure at the front end and a cylindrical structure at the rear end, a clamping groove is formed in the rear end, the circuit board is fixed in the clamping groove, the sensing chip is located in the front end, a sensing hole is formed in the position, corresponding to the sensing chip, of the front end, and the electronic wire extends to the bottom of the plastic shell along the inside of the plastic shell.

3. The moisture and humidity sensor of claim 2, wherein: the front end is provided with an interface.

4. The moisture and humidity sensor of claim 2, wherein: epoxy resin is filled around the induction hole and at the joint of the plastic shell and the electronic wire.