KR102652549B1 - Non-contact infrared thermometer - Google Patents

Abstract

The present invention relates to a non-contact infrared thermometer. More specifically, the lead wire of an infrared sensor is connected to connection terminals formed on the upper and lower surfaces of a sensor connection board of a size and shape that can be inserted into the hollow of a copper tube, and the printed circuit is connected to the connection terminal. A plurality of connection pins formed on the board are passed through a plurality of connection holes formed at the rear end of the sensor connection board to electrically and mechanically connect the sensor connection board and the printed circuit board, and the sensor connection board is connected to the infrared sensor through the sensor connection board. The upper case on which the printed circuit board is seated and the lower case containing multiple batteries are combined top and bottom to form one inner case, and the inner case is inserted into the outer case in the shape of a square pipe in a slide manner. After assembly, a probe surrounding the infrared sensor and a probe cover surrounding the probe are sequentially installed on the front of the external case, and a battery cover is installed on the rear of the external case.

Description

Non-contact infrared thermometer{NON-CONTACT INFRARED THERMOMETER}

The present invention relates to a non-contact infrared thermometer. More specifically, the lead wire of the infrared sensor is not connected by soldering directly to a printed circuit board, but the lead wire of the infrared sensor is soldered and connected to a separate sensor connection board, and then the sensor is connected. This relates to a non-contact infrared thermometer that is easy to assemble by connecting the board to a printed circuit board and can prevent breakage of the lead wire by fixing the lead wire of the infrared sensor to the sensor connection board.

A non-contact infrared thermometer measures body temperature by detecting infrared rays generated from the human body and converting them into a predetermined electrical signal. It mainly uses an infrared sensor that detects infrared rays and an electrical signal generated from the infrared sensor to measure body temperature and transmit it to the outside. It includes a printed circuit board that displays and a housing that surrounds and protects them.

However, conventional non-contact thermometers use a method of connecting the infrared sensor lead wires by soldering them directly to the printed circuit board, so when assembling the thermometer, soldering the infrared sensor lead wires to the printed circuit board is required, which reduces assembly time and manpower. There was a problem that took a lot of time.

In addition, when the lead wire of the infrared sensor is soldered directly to the printed circuit board as in the past, there is a problem that the lead wire is easily broken by external force because the infrared sensor is connected to the printed circuit board through the lead wire, causing a malfunction.

In addition, conventional non-contact infrared thermometers usually form a single housing by combining the upper and lower cases upwards and downwards, so the upper and lower cases are exposed to the outside, resulting in a dirty appearance and a display panel on the top of the upper case. Due to the need to install expensive display panels, the product price increased and productivity decreased due to the increased assembly time and manpower required.

Republic of Korea registered patent 10-1804374 (registration date: November 28, 2017) Republic of Korea registered utility model 20-0243898 (registration date: August 9, 2001) Republic of Korea Public Patent No. 10-2021-0064933 (Publication date: June 3, 2021)

The present invention is to solve these problems of the prior art, and the main purpose of the present invention is to connect the infrared sensor to a printed circuit using a separate sensor connection board, rather than directly soldering the lead wire of the infrared sensor to the printed circuit board. The goal is to provide a non-contact infrared thermometer that simplifies the assembly process by connecting to a board and prevents the lead wire of the infrared sensor from breaking.

In addition, the present invention forms an inner case by vertically combining the upper case accommodating the printed circuit board and the lower case accommodating the battery, and by sliding this inner case to the outer case, the structure of the outer case is greatly improved. The aim is to provide a non-contact infrared thermometer that can improve productivity by simplifying and assembling.

In addition, the present invention provides a non-contact infrared thermometer that can reduce assembly time and manpower by installing the display so that it is not exposed to the outside of the external case, and can reduce costs by not using an expensive display panel.

As a means to achieve the purpose of the present invention, the non-contact infrared thermometer according to the present invention,

In a non-contact infrared thermometer including an infrared sensor, a printed circuit board, and a housing,

The infrared sensor includes a sensor body and a plurality of lead wires, and the lead wire of the infrared sensor is connected to connection terminals formed on the upper and lower surfaces of a sensor connection board of a size and shape that can be inserted into the hollow of the copper tube, Electrically and mechanically connecting the sensor connection board and the printed circuit board by passing a plurality of connection pins formed on the printed circuit board through a plurality of connection holes formed at the rear end of the sensor connection board;

The housing forms one inner case by vertically combining an upper case on which the printed circuit board connected to the infrared sensor through the sensor connection board is seated and a lower case that accommodates a plurality of batteries, and has a square pipe shape. After inserting and combining the inner case into the inside of the outer case using a slide method, a probe surrounding the infrared sensor and a probe cover surrounding the probe are sequentially installed on the front of the outer case, and a battery cover is installed on the back. It is characterized by being carried out.

In the present invention, a plurality of LED chips representing a plurality of digital numbers are mounted on the upper surface of the printed circuit board, and a plurality of light transmission devices are installed on the upper surface of the upper case to allow light emitted from the plurality of LED chips to penetrate. Holes are formed to correspond, and the external case includes a translucent portion through which light passing through the light transmission hole is projected to the outside.

A contact switch is mounted on the upper surface of the printed circuit board, a coupling hole for coupling an operation button is formed on the upper surface of the upper case at a position corresponding to the contact switch, and the operation button is on the upper surface of the outer case. This penetrating through hole is formed at a position corresponding to the contact switch.

The outer case has a top and bottom, both sides and a back, formed as one body, the front is completely open and has the shape of a square tube, the through hole is formed on the top, and an insertion hole for inserting a battery is formed on the back. is formed;

The upper case is made of a square channel in which the upper surface and both sides are formed integrally and the lower surface and the front and rear surfaces are completely open. The coupling hole is formed on the upper surface to correspond to the through hole, and the LED is at the rear thereof. A plurality of light transmission holes are formed through which light emitted from the chip passes, and a plurality of coupling protrusions are formed on both sides to be detachably coupled to both sides of the lower case;

The lower case consists of a lower surface, two sides, and a rear, and the upper and front surfaces are completely open. A support boss is formed on the lower surface to protrude at a certain height to support the printed circuit board accommodated in the upper case, and two batteries are provided. A battery storage box is formed to accommodate the battery, and a plurality of coupling grooves are formed on both sides to guide and secure the plurality of coupling protrusions formed on both sides of the upper case.

The printed circuit board is formed with a plurality of through pins extending downward for a certain length so as to penetrate a plurality of through holes through which the plurality of support bosses penetrate and a plurality of connection holes formed at the rear end of the sensor connection board, and the external The case is made of translucent material.

The non-contact infrared thermometer according to the present invention does not directly solder the lead wire of the infrared sensor to the printed circuit board, but indirectly connects the infrared sensor to the printed circuit board using a separate sensor connection board, so the lead wire of the infrared sensor is connected to the printed circuit board. It is integrally fixed to the upper and lower surfaces of the sensor connection board to prevent lead wires from being disconnected, and a number of connection pins installed on the printed circuit board pass through a number of connection holes formed at the rear end of the sensor connection board. Because it connects the printed circuit board and the printed circuit board electrically and mechanically, assembly is very easy.

In addition, the non-contact infrared thermometer according to the present invention forms one inner case by assembling the upper case containing the printed circuit board and the lower case containing the battery up and down. After attaching this inner case to the inside of the outer case in the shape of a square pipe using a slide method, the probe and probe cover are sequentially combined on the front of the outer case, and the battery cover is installed on the back, making housing assembly very easy. It has the effect of significantly reducing assembly time and manpower, thereby improving productivity.

In addition, the non-contact infrared thermometer according to the present invention has a plurality of LED chips mounted on the upper surface of the printed circuit board and a plurality of light transmission holes formed on the upper surface of the upper case installed to correspond to each other, and a light transmission hole on the upper surface of the external case. By forming a translucent portion at a position corresponding to the display panel is not exposed to the outside of the external case, assembly is easy and an expensive display panel is not used, which has the effect of reducing costs.

1 is a perspective view showing a preferred embodiment of a non-contact infrared thermometer according to the present invention;
Figure 2 is a perspective view showing the probe cover and battery cover removed from the non-contact infrared thermometer shown in Figure 1;
Figure 3 is an exploded perspective view of the non-contact infrared thermometer shown in Figure 1;
Figure 4 is a cross-sectional view of the non-contact infrared thermometer shown in Figure 1;
Figure 5 is an exploded cross-sectional view for explaining the assembly method of the non-contact infrared thermometer according to the present invention.

Figure 1 is a perspective view showing a preferred embodiment of a non-contact infrared thermometer according to the present invention, Figure 2 is a perspective view showing a state in which the probe cover and the battery cover are separated from the non-contact infrared thermometer shown in Figure 1, and Figure 3 is a perspective view showing a state in which the probe cover and battery cover are separated. This is an exploded perspective view of the non-contact infrared thermometer shown in .

First, referring to FIGS. 1 and 2, the non-contact infrared thermometer 1 of the present invention is made of a rectangular parallelepiped shape of a size that can be held by hand, and an operation button 38 for operating the thermometer is installed on the upper surface and an operation button 38 for operating the thermometer is installed on the rear surface. A battery cover 59 is installed to close the battery insertion hole 43a, and a sensing hole 57a is formed on the front to measure body temperature, and a translucent portion ( 35a) is formed.

Next, as shown in FIG. 3, the non-contact infrared thermometer 1 of the present invention is divided into a sensing unit 10, a measuring unit 30, and a housing 50 according to function, and the sensing unit 10 is a non-contact type. It is a part that detects body temperature and includes an infrared sensor 12 and a copper tube 14 surrounding the infrared sensor 12, and the measuring part 30 is a part that calculates and displays body temperature from the detected signal and has a printed circuit. It includes a sensor connection board 15 that connects the substrate 32, the printed circuit board 32, and the infrared sensor 12, and the housing 50 covers and protects the sensing unit 10 and the measuring unit 30. It includes a probe 11 and a probe cover 57 that protect the sensing unit 10, and an external case 51 and an internal case 52 that protect the measuring unit 30.

Specifically, as shown in FIGS. 3 and 4, the infrared sensor 12 detects infrared rays emitted from the human body and outputs a predetermined electrical signal, and includes a sensor body 12b and a plurality of lead wires 12a. It consists of The copper tube 14 is a cylindrical pipe made of a metal material with excellent thermal conductivity, into which the infrared sensor 12 is inserted, and serves to protect the infrared sensor 12 from external influences.

The printed circuit board 32 has a size and shape that can be seated inside the inner case 42. In particular, the front side is narrowed so that it can be inserted into the inside of the probe 11, and extends a certain length forward. It protrudes and the protrusion 32a is formed integrally. In addition, a contact switch (38c) is mounted on the upper end of the printed circuit board (32) so as to contact the operation button (38), and on both sides of the contact switch (38a) there are two penetrating upper ends of the support boss (56), which will be described later. Two through holes 56a are formed. In addition, a plurality of LED chips 35 are mounted at the rear to correspond to the plurality of light transmission holes 35b, and a connection spring is installed on the lower surface to contact one side of the battery 43 accommodated in the battery storage box 45. (44) is installed.

The sensor connection board 15 is for connecting the printed circuit board 32 and the infrared sensor 12. One end is sized and shaped to be inserted into the inside of the copper tube 14, and the other end is a printed circuit board. It is made in a form that can be electrically and mechanically connected to (32). Preferably, the sensor connection board 15 is made of a narrow and elongated PCB, has a plurality of connection holes 15a formed at the rear end, and is connected to the lead wire 12a of the infrared sensor 12 on both sides. A plurality of connection terminals 15b for the connection terminal 15b and a plurality of conductors 15c electrically connecting the connection terminal 15b and the connection hole 15a are printed.

The outer case 51 forms the exterior of the non-contact infrared thermometer 1, and has an upper surface 51a, both sides 51b, and a rear surface 51c, and the front is completely open to form a square tube. It comes true. A through hole 38a for installing the operation button 38 is formed in the upper surface 51a, and an insertion hole 43a is formed in the rear surface 51c to allow the battery 43 to be inserted. Additionally, a battery cover 59 for closing the insertion hole 43a is detachably coupled to the rear surface 51c. In addition, a translucent portion 35a is formed on the upper surface 15a of the outer case 51 to display the body temperature in digital numbers.

The inner case 52 is inserted into the outer case 51 in a slide manner and is divided into an upper case 53 and a lower case 54, and the inside of the upper case 53 contains a printed circuit board ( 32) is accommodated, and the battery 43 is accommodated inside the lower case 54.

First, the upper case 53 is composed of a square channel in which the upper surface 53a and both sides 53b are formed as one piece, and the lower surface and front and rear surfaces are completely open. In addition, a coupling hole (38b) is formed on the upper surface (53a) for coupling the operation button (38), and behind it, a plurality of digital numbers are displayed on the translucent part (35a) by passing the light emitted from the LED chip. A plurality of light transmission holes 35b are formed. In addition, a plurality of coupling protrusions 55a are formed on both sides 53b to be detachably coupled to both sides of the lower case 54.

Next, the lower case 54 has a shape corresponding to the upper case 53, and is composed of a lower surface (54a), both sides (54b), and a rear surface (54c), and the upper surface and front are completely open. And at the front end of the lower surface 54a, a support boss 56 is formed to protrude at a certain height to support the printed circuit board 32 accommodated in the upper case 53, and two batteries 43 are installed at the rear end. A battery storage box 45 divided by a plurality of partition walls is formed to accommodate the battery. And an insertion hole 43b is formed in the rear surface 54c to allow the battery 43 to be inserted. In addition, coupling grooves 55b are formed on both sides 54b to guide and secure the plurality of coupling protrusions 55a formed on both sides of the upper case 53.

Next, the probe 11 is attached to the front of the outer case 51 and protects the infrared sensor 12 and the copper tube 14 by surrounding it. It is made of synthetic resin in a hollow cone shape, and has an outer case at the rear end. A coupling portion 11a to which 51 is coupled is formed, and a coupling portion 11b to which a probe cover 57 to be described later is coupled is formed at the front.

The probe cover 57 is made in the shape of a square box with an open back, a sensor hole 57a is formed on the front, and a coupling groove is formed at the rear end to engage the coupling portion 11b formed on the probe 11. there is.

The non-contact infrared thermometer (1) according to the present invention uses the sensor connection board (15) instead of connecting the lead wire (12a) of the infrared sensor (12) to the printed circuit board (32) by directly soldering it to the infrared sensor (12). ) is indirectly connected to the printed circuit board 32, the lead wire 12a of the infrared sensor 12 is integrally fixed to the upper and lower surfaces of the sensor connection board 15 to prevent the lead wire 2a from being disconnected. A plurality of connection pins 37 installed on the printed circuit board 32 are coupled to penetrate the plurality of connection holes 15a formed at the rear end of the sensor connection board 15, thereby connecting the sensor connection board 15 and the printed circuit. Because the board 32 can be connected electrically and mechanically, assembly is very easy.

In addition, the non-contact infrared thermometer (1) according to the present invention is an inner case (52) by assembling the upper case (53) containing the printed circuit board (32) and the lower case (54) containing the battery (43) up and down. After forming, this inner case 52 is coupled to the inside of the outer case 51 in a slide manner. By sequentially combining the probe 11 and the probe cover 57 on the front of the external case 51 and installing the battery cover 59 on the rear, assembly of the housing 50 is very easy, reducing assembly time and manpower. It has the effect of significantly reducing and improving productivity.

In addition, the non-contact infrared thermometer 1 according to the present invention includes a plurality of LED chips 35 mounted on the upper surface of the printed circuit board 32 and a plurality of light transmission holes 35b formed on the upper surface of the upper case 35b. are installed to correspond to each other, and the translucent portion 35a is formed to correspond to the upper surface of the outer case 51, so that the display panel is not exposed to the outside of the outer case 51, resulting in a beautiful appearance and saving assembly time and manpower. This has the effect of lowering product prices by not using expensive display panels.

Hereinafter, the assembly method of the non-contact infrared thermometer 1 according to the present invention will be described with reference to FIG. 5.

First, with the infrared sensor 12 inserted into the copper tube 14, the lead wire 12a of the infrared sensor 12 is brought into close contact with the sensor connection board 15 and the connection terminal formed on the sensor connection board 15. Connect to (15b) by soldering. At this time, the sensor body 12b is in close contact with the front of the sensor connection board 15, and the lead wire 12a and the sensor connection board 15 are integrally fixed using an elastic band 17.

Next, a plurality of connection pins 32b installed on the lower surface of the printed circuit board 32 are passed through the plurality of connection holes 15a formed at the rear end of the sensor connection board 15 to connect the sensor connection board 15 and the printed circuit board. (32) is electrically and mechanically connected.

Next, the printed circuit board 32 to which the infrared sensor 12 is connected through the sensor connection board 15 is seated inside the upper case 53, and the lower case 54 is coupled to the lower part to form the inner case 52. forms. At this time, the plurality of coupling protrusions 55a formed on both sides of the upper case 53 slide along the plurality of coupling grooves 55b formed on both sides of the lower case 54, and the coupling grooves and coupling protrusions, not shown, are coupled to each other. Thus, the upper case 53 and the lower case 54 are integrated into one body. And the upper end of the support boss 56 formed in the lower case 54 penetrates the through hole 56s formed in the printed circuit board 32 to fix the printed circuit board 32 in place, and the printed circuit board 32 ) are fixed to correspond to the plurality of light transmission holes 35b formed on the upper surface of the upper case 53. Preferably, the upper surface 53a of the upper case 53 can be made to a predetermined thickness so that the LED chip 35 and the light transmission hole 35b are as close as possible.

Then, the inner case 52 is inserted into the outer case 51 through the open front of the outer case 51. And when the operation button 38 is coupled to the coupling hole 38b of the upper case 53 through the through hole 38a formed on the upper surface of the outer case 51, the lower end of the operation button 38 is connected to the printed circuit board ( It is possible to contact the contact switch 38c installed on the upper surface of 32).

Next, the probe 11 and the probe cover 57 are sequentially coupled to the front of the outer case 51, and the two batteries 43 are inserted through the insertion hole 43a formed on the rear side 51c of the outer case 51. ) can be stored in the battery storage box 45, and then the non-contact infrared thermometer 1 of the present invention can be assembled by attaching the battery cover 59 to the rear of the external case 51.

In this way, the non-contact infrared thermometer (1) of the present invention is not only easy to assemble because the inner case (52) is inserted into the outer case (51) in the shape of a square pipe and made of a translucent material in a slide manner. In addition, the display device or case coupling device is not exposed to the outside, so the appearance is beautiful. Additionally, since all parts can be easily assembled by hand, there is no need to use separate tools for assembly.

1: Non-contact infrared body temperature 10: Sensing unit
11: Probe 12: Infrared sensor
12a: Lead wire 14: Copper pipe
15: sensor connection board 30: measuring unit
32: printed circuit board 35: LED chip
35a: Translucent part 35b: Gwantusa hole
38: operation button 38a: through hole
38b: Installation hole 38c: Contact switch
43: battery 43a: insertion hole
45: battery storage box 50: housing
51: external case 52: internal case
53: upper case 54: lower case
56: Support boss 57: Probe cover
59: Battery cover

Claims (5)

In a non-contact infrared thermometer including an infrared sensor, a printed circuit board, and a housing,
The infrared sensor includes a sensor body and a plurality of lead wires, and the lead wire of the infrared sensor is connected to connection terminals formed on the upper and lower surfaces of a sensor connection board of a size and shape that can be inserted into the hollow of the copper tube, Electrically and mechanically connecting the sensor connection board and the printed circuit board by passing a plurality of connection pins formed on the printed circuit board through a plurality of connection holes formed at the rear end of the sensor connection board;
The housing forms one inner case by vertically combining an upper case on which the printed circuit board connected to the infrared sensor through the sensor connection board is seated and a lower case that accommodates a plurality of batteries, and has a square pipe shape. After inserting and combining the inner case into the inside of the outer case using a slide method, a probe surrounding the infrared sensor and a probe cover surrounding the probe are sequentially installed on the front of the outer case, and a battery cover is installed on the back. A non-contact infrared thermometer characterized in that it is made.
According to claim 1,
A plurality of LED chips representing a plurality of digital numbers are mounted on the upper surface of the printed circuit board, and a plurality of light transmission holes are formed on the upper surface of the upper case to allow light emitted from the plurality of LED chips to penetrate. A non-contact infrared thermometer, wherein the external case includes a translucent portion so that light passing through the light transmission hole is projected to the outside.
According to clause 2,
A contact switch is mounted on the upper surface of the printed circuit board, a coupling hole for coupling an operation button is formed on the upper surface of the upper case at a position corresponding to the contact switch, and the operation button is on the upper surface of the outer case. A non-contact infrared thermometer, characterized in that the penetrating through hole is formed at a position corresponding to the contact switch.
According to clause 3,
The outer case has a top and bottom, both sides and a back, formed as one piece, the front is completely open and has a square tube shape, the through hole is formed on the top, and the back has an insertion hole for inserting a battery. formed;
The upper case is made of a square channel in which the upper surface and both sides are formed as one body and the lower surface and the front and rear surfaces are completely open. The coupling hole is formed on the upper surface to correspond to the through hole, and the LED is at the rear thereof. A plurality of light transmission holes are formed to allow light emitted from the chip to pass through, and both sides are formed with a plurality of coupling protrusions that are detachably coupled to both sides of the lower case;
The lower case consists of a lower surface, two sides, and a rear, and the upper and front surfaces are completely open. A support boss is formed on the lower surface to protrude at a certain height to support the printed circuit board accommodated in the upper case, and two batteries are provided. A non-contact infrared thermometer is formed on both sides of the battery compartment to accommodate the upper case, and has a plurality of coupling grooves formed on both sides to guide and secure the plurality of coupling protrusions formed on both sides of the upper case.
According to clause 4,
The printed circuit board is formed with a plurality of through pins extending downward for a certain length so as to pass through a plurality of through holes through which the plurality of support bosses penetrate and a plurality of connection holes formed at the rear end of the sensor connection board, and the external A non-contact infrared thermometer characterized in that the case is made of a translucent material.

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