TWI832392B - Thermocouple wire structure - Google Patents

Abstract

A thermocouple wire structure includes a housing, an insulating bar and a temperature sensing set. The insulating bar is fixed on the housing and includes a positioning portion. The temperature sensing set includes a temperature wire passing through the insulating bar and an elastic wire extending from the temperature wire and protruding from the positioning portion. Accordingly, the thermocouple wire structure may be used to measure the temperature of an object to obtain a measurement signal through the thermocouple wire structure. As a result, the measurement signal is transmitted to a measuring instrument such as an electric meter.

Description

Thermocouple temperature wire structure

The present invention relates to temperature measurement, in particular to a thermocouple temperature line structure.

Thermocouple is a widely used temperature sensor. When the traditional thermocouple structure is applied to a temperature wire adapter such as a multimeter, the temperature wire is mainly connected to a metal terminal composed of a hollow copper tube or copper pillar, and the temperature wire is connected to the thermocouple through the metal terminal. The measuring port in the electric meter socket is connected. Accordingly, the temperature effect voltage signal of the thermocouple temperature wire will be transmitted to the metal terminal, and then transmitted through the metal terminal to the measuring rod in the electric meter socket, thereby achieving the purpose of temperature measurement.

However, in the existing thermocouple structure, since the measuring probe and the metal tip are made of different materials, the joint is where the room temperature thermocouple of the socket is generated, and the thermocouple effect voltage generated between the two is not the true temperature. The thermocouple effect voltage of the point; in addition, the temperature effect voltage of the measurement target object of the measurement probe will transmit the temperature voltage through the metal terminal. Due to the room temperature heat generated at the junction of the temperature wire of the measurement probe and the metal terminal The galvanic effect voltages cancel each other out, so the measured offset temperature at the measuring end of the electric meter must be synchronously and stably offset with the room temperature thermocouple effect voltage at the metal terminal joint. Otherwise, the measured temperature of the target object will be affected by the electric meter. The room temperature at the metal terminal joint is not compensated synchronously and does not match the actual temperature, which affects the accuracy and precision of the measurement results.

In view of this, the inventor has devoted himself to research on the above-mentioned existing technology and cooperated with the application of academic theory to try his best to solve the above-mentioned problems, which has become the goal of the inventor's improvement.

One object of the present invention is to provide a thermocouple temperature wire structure whose insulating end is made of plastic material and is not easily affected by external temperature (such as room temperature), so that measuring instruments such as electric meters will not be affected by the temperature received, such as Temperature differences are caused by the influence of external temperatures such as room temperature, thereby maintaining the accuracy and precision of measurement results.

In order to achieve the above object, the present invention is a thermocouple temperature wire structure, including a base, an insulating terminal and a temperature sensing group. The insulating end is fixed on the base, and the insulating end is provided with a positioning part. The temperature sensing group includes a temperature wire passing through an insulated terminal and an elastic wire extending from the temperature wire and protruding out of the positioning portion.

Compared with the conventional ones, the thermocouple temperature line structure of the present invention can measure the temperature of an object through a thermocouple temperature probe and obtain a measurement signal, thereby transmitting the measurement signal to a measuring instrument such as an electric meter. . Since the insulating end is made of plastic material, it is not easily affected by external temperature and undergoes instantaneous changes. Therefore, there is no temperature difference between the temperature probe and the temperature sensing group of the present invention, so the accuracy and precision of the measurement results can be maintained. In addition, the insulating end made of plastic material can simplify the manufacturing process and assembly, reduce the overall cost of the thermocouple temperature wire structure, and increase the practicality of the present invention.

1: Thermocouple temperature line structure

2: Electric meter

10: base

11: Groove

20, 20’: Insulated terminal

200: Measuring port hole

21, 21’: Positioning Department

210: docking terminal

30, 30’: Temperature sensing group

31, 31’: Temperature wire

32:Elastic wire

321: contact section

322: Leading section

323: Hook

40, 40’: Insulating sleeve

400: Insertion space

41: Elastic tablet

50: Shell

51: Thermocouple temperature probe

Figure 1 is a schematic three-dimensional appearance diagram of the thermocouple temperature line structure of the present invention.

Figure 2 is a three-dimensional exploded schematic diagram of the thermocouple temperature line structure of the present invention.

Figure 3 is a combined cross-sectional view of the thermocouple temperature line structure of the present invention.

Figure 4 is a schematic diagram of the thermocouple temperature line structure of the present invention applied to an electric meter.

Figure 5 is a schematic diagram of the docking of the thermocouple temperature line structure of the present invention.

The detailed description and technical content of the present invention are described below with reference to the drawings. However, the attached drawings are only for reference and illustration and are not intended to limit the present invention.

Please refer to FIGS. 1 to 3 , which are respectively a three-dimensional appearance diagram, a three-dimensional exploded diagram and an assembled cross-sectional view of the thermocouple temperature line structure of the present invention. The present invention is a thermocouple temperature wire structure 1, which includes a base 10, an insulating terminal 20 and a temperature sensing group 30. It may further include an insulating sleeve 40. The insulating terminal 20 is fixed on the base 10; specifically, it can be fixed on the base 10 by assembly, or integrally formed with the base 10 by injection molding. The temperature sensing group 30 is disposed on the insulating terminal 20 , and the insulating terminal 20 is fitted outside the temperature sensing group 30 . In this embodiment, the thermocouple temperature wire structure 1 further includes a shell 50, and the shell 50 can be connected to a thermocouple through a wire (for example, the subsequent temperature wires 31 and 31' are jointly covered with a single wire). Even temperature probe 51. In addition, the base 10 is combined in the housing 50 to form the thermocouple temperature line structure 1 . The thermocouple temperature line structure 1 is described in more detail as follows.

Please refer to FIG. 2 . The insulating terminal 20 is made of insulating plastic and fixed on the base 10 . In addition, the insulating terminal 20 is provided with a positioning portion 21 . The positioning portion 21 can be provided at the front end or outer edge surface of the insulating tip 20; and in this embodiment, the positioning portion 21 can be a sectional groove extending from one end of the insulating tip 20 to the opposite end of the insulating tip 20. another side. In addition, in this embodiment, the insulating tip 20 is integrally formed with the base 10 and is made of the same insulating material.

The temperature sensing group 30 includes a temperature wire 31 running through the insulated terminal 20 and an elastic wire 32 extending from the temperature wire 31 and protruding out of the positioning portion 21. The positioning portion 21 is for the elasticity. The conductor 32 can be in any concave or convex position corresponding to the front end or outer edge surface of the insulating terminal 20. Or a geometric shape such as a plane, and the elastic wire 32 can be suitable for joining with a measuring instrument (such as the electric meter 2, as shown in FIG. 4) at normal temperature such as room temperature to sense the measured voltage. In addition, the temperature wire 31 is externally connected to the thermocouple temperature probe 51 from the insulated terminal 20 through the housing 50 (as shown in FIG. 1 ).

Furthermore, the insulating sleeve 40 can be assembled on the base 10 to be placed outside the insulating tip 20 and form an insertion space 400 between the insulating tip 20 and the insertion space 400 . The elastic wire 32 protruding from the positioning portion 21 is accommodated therein.

It should be noted that the insulating sleeve 40 is provided with an elastic pressing piece 41 . The elastic pressing piece 41 is recessed from the surface of the insulating sleeve 40 toward the insertion space 400 . In addition, as shown in Figures 4 and 5, the elastic pressing piece 41 is provided to press against components used for docking, such as the standard 4mm measurement port hole 200 on the electric meter 2, the docking terminal 210 inside it, etc. This increases the friction between the mating terminal 210 and the mating terminal 210 to prevent the mating terminal 210 from being accidentally moved out of the insertion space 400 .

Specifically, in this embodiment, the numbers of the insulating terminals 20 , the temperature sensing groups 30 and the insulating sleeves 40 of the thermocouple temperature wire structure 1 are respectively set to be plural. A pair of insulating terminals 20, 20′ are spaced and arranged on the base 10. In addition, a pair of temperature sensing groups 30 and 30' are respectively provided on the pair of insulating terminals 20 and 20'. In addition, a pair of insulating sleeves 40, 40' are correspondingly fitted with the pair of insulating terminals 20, 20'.

It is worth noting that the positioning portions 21 and 21' on the pair of insulating terminals 20 and 20' are arranged in a staggered manner and are relatively opened at different orientations of the pair of insulating terminals 20 and 20' to facilitate insertion. It can have better stability when docking the terminal 210, thereby improving the conductive effect.

In one embodiment of the present invention, the temperature wire 31 and the elastic wire 32 are provided separately, and one end of the elastic wire 32 is connected to the temperature wire 31 through welding. Specifically, the The elastic conductor 32 has a contact section 321 and a conductive section 322 . The abutting section 321 abuts an inner wall surface of the insulating tip 20 . The guide section 322 is bent and stops in the insertion space 400 . It should be noted that during actual implementation, the temperature wire 31 and the elastic wire 32 can also be configured to be integrally formed. The elastic wire 32 extends from the temperature wire 31 and is bent to have elastic pressing force.

Furthermore, the contact section 321 is arranged in a V shape. In addition, the guide section 322 is arranged in an arc shape. Accordingly, the contact section 321 of the elastic conductor 32 abuts the inner wall surface of the insulating end 20 to provide support to one side of the elastic conductor 32 .

In addition, one end of the elastic wire 32 has a hook 323 . In addition, the base 10 is provided with a groove 11 . In one embodiment of the present invention, the hook 323 is arranged in a U shape, but this is not a limitation. Accordingly, the other end of the elastic wire 32 is locked in the groove 11 through the hook 323 to be positioned.

Please also refer to Figures 4 and 5, which are schematic diagrams of the connection of the thermocouple temperature line structure of the present invention. The thermocouple temperature wire structure 1 of the present invention can be plugged into the measurement port 200 of an electric meter 2 and make contact with the butt terminal 210 in the measurement port 200. Through the thermocouple temperature probe 51 By making contact with an object (not shown) whose temperature is to be measured, the temperature can be measured and its temperature value can be measured.

When the thermocouple temperature line structure 1 of the present invention is used, the thermocouple temperature probe 51 measures the temperature of the above-mentioned object and obtains a measurement signal. For example, when applied to the electric meter 2, the insulating sleeve 40 is inserted into the measuring port hole 200 of the electric meter 2, so that the butt terminal 210 in the measuring port hole 200 is inserted into the insertion space 400, and the temperature sensor is connected. The elastic wire 32 of the measuring group 30 can transmit the measurement signal of the thermocouple temperature probe 51 to the electric meter 2 through the elastic wire 32 . Accordingly, the thermocouple temperature line structure 1 can obtain the actual temperature value through calculation by the software of the electric meter 2 .

In addition, the present invention mainly arranges the insulating terminal 20 and the elastic wire 32 to achieve elastic contact through the insulating terminal 20 made of plastic material to avoid or be less susceptible to external temperatures (such as room temperature). Affects the temperature value it senses. Therefore, it is not limited to use in the detection of the electric meter 2; other applications such as direct or indirect contact or conduction of terminals or terminals and other structures can also be applied to the present invention to achieve the stated purpose and effect.

The above descriptions are only preferred embodiments of the present invention and are not intended to define the patent scope of the present invention. Other equivalent changes that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

1: Thermocouple temperature line structure

10: base

11: Groove

20, 20’: Insulated terminal

30, 30’: Temperature sensing group

31, 31’: Temperature wire

32:Elastic wire

321: contact section

322: Leading section

323: Hook

40, 40’: Insulating sleeve

400: Insertion space

41: Elastic tablet

50: Shell

Claims (11)

A thermocouple temperature wire structure includes: a base; an insulating end fixed on the base; the insulating end is provided with a positioning portion; and a temperature sensing group including a A temperature wire and an elastic wire extending from the temperature wire and protruding out of the positioning portion; it further includes a set of insulating sleeves provided on the base, and the insulating sleeve is sleeved outside the insulating end and An insertion space is formed between the insulated end and the elastic conductor to accommodate the elastic conductor. The elastic conductor has a contact section and a conductive section. The contact section is against an inner wall of the insulated end. The guide section is bent and stops in the insertion space. The thermocouple temperature wire structure as claimed in claim 1 further includes a shell, and the temperature wire is connected to a thermocouple temperature probe from inside the insulated terminal through the shell. The thermocouple temperature wire structure as claimed in claim 1, wherein the insulating terminal is integrally formed with the base. The thermocouple temperature line structure as claimed in claim 1, wherein the positioning portion is opened on the outer edge surface of the insulating end and extends from one end of the insulating end to the opposite end. The thermocouple temperature line structure as claimed in claim 4, wherein the positioning part is a sectional groove. The thermocouple temperature wire structure of claim 1, wherein one end of the elastic wire has a hook, the base is provided with a groove, and the hook is locked in the groove. The thermocouple temperature line structure as described in claim 6, wherein the hook is arranged in a U shape. The thermocouple temperature wire structure as claimed in claim 1, wherein the temperature wire and the elastic wire are provided separately, and one end of the elastic wire is connected to the temperature wire through welding. The thermocouple temperature line structure as described in claim 1, wherein the numbers of the insulating terminals and the temperature sensing groups are both plural. The thermocouple temperature line structure as claimed in claim 1, wherein the insulating sleeve is provided with an elastic pressing piece, and the elastic pressing piece is concave from the surface of the insulating sleeve toward the insertion space. The thermocouple temperature line structure as claimed in claim 1, wherein the contact section is arranged in a V shape, and the conductive section is arranged in an arc shape.

Images