KR102048278B1 - Circuit testing device and controlling method of the same - Google Patents

Abstract

The present invention relates to a circuit test device and a control method thereof. The circuit test device includes a circuit test board including a plurality of connector terminals, a fan holding part for holding a fan and performing hinge movement of the fan, and a control part which senses the current(s) of one or more test terminals connected to each of the connector terminals, controls the operation of the fan holding part in accordance with a sensed current value, and includes an LED. When all the sensed current are more than a set size, the control part operates the LED and performs the hinge movement of the fan holding part to allow the fan to be in contact with any one of the test terminals. It is possible to check the defect of a terminal easily.

Description

Circuit testing device and controlling method of the same

The present invention relates to a circuit inspection apparatus and a control method thereof, and more particularly to a circuit inspection apparatus and a control method for enhancing the discriminating power of a detected defective circuit.

The wiring harness consists of wires for connecting and operating the electronics, terminals and connectors forming a connection. These wiring harnesses are made in a single set to connect electrical components.

On the other hand, more complicated wiring harnesses are installed in automobiles, aircraft, ships, and the like. Specifically, a large number of wire bundles and connectors for connecting the bundles are assembled to form a set. At this time, if there is a bad assembly of the wiring harness, a bad assembly of the terminal and the wire, a bad terminal itself, and a bad assembly of the terminal and the connector, problems may occur after installation and lead to fatal accidents.

Accordingly, during the manufacture of the wiring harness, the inspection of the defects of the wires and the terminals themselves, the assembly of the terminals and the wires, and the assembly of the terminals and the connectors are carried out.

More than a few dozen wire terminals are assembled in one connector. When assembling a large number of wire terminals to the connector, while conducting the energization inspection of the wires one by one, the arrangement of the terminals for the connector and the degree of failure are inspected using a separate inspection machine.

At this time, the inspection work takes as long as the assembly time, so there is a limit to the batch of accurate inspection. In other words, the existing inspection equipment had a limit in confirming the failure of all terminals for the connector.

One of the related arts related to the wiring harness circuit inspection apparatus is disclosed in Korean Patent Laid-Open No. 10-2012-0046065.

In order to solve the above problems, an embodiment of the present invention is to provide a circuit inspection device and a control method thereof that can easily determine whether a circuit or terminal is defective.

In addition, an embodiment of the present invention is to provide a circuit inspection apparatus and a control method thereof that can increase the discriminating power of the detected bad circuit or bad terminal.

In addition, an embodiment of the present invention is to provide a circuit inspection device and a control method thereof comprising a fan holding part with high durability.

In order to solve the above problems, an embodiment of the present invention, a circuit inspection board including a plurality of connector terminals, a fan gripping portion for holding the fan and hinged movement of the fan, and each of the plurality of connector terminals And detecting a current of at least one test terminal connected to a terminal, controlling an operation of the fan holding part according to the detected current value, and including a LED. It provides a circuit inspection device, characterized in that the LED is operated and the fan holding part hinged movement to make the fan in contact with any one of the test terminal, it is possible to easily determine whether the circuit or the terminal is defective and the detected bad circuit There is an effect that can increase the discernment of.

In addition, the embodiment of the present invention, in the control method of the circuit inspection apparatus including a circuit test plate including a plurality of connector terminals, a fan holding unit for holding the LED and the fan and hinged movement of the fan, at least one test terminal A connection step of connecting each of the connector terminals, a measurement step of measuring current of the at least one test terminal, and when the sensed current is greater than or equal to a predetermined size, the LED is operated and the fan grip unit is moved to move the fan. The present invention provides a method for controlling a circuit inspection apparatus including a display step of contacting one inspection terminal, and can easily identify whether a circuit or a terminal is defective and increase the discrimination power of a detected defective circuit.

In addition, an embodiment of the present invention, the fan gripping portion, a hinge portion including a base plate provided in the circuit inspection plate and a gripping plate hinged to the base plate and holding the fan, and provided in the base plate And a cam member rotated by a driving unit and in contact with a lower surface of the gripping plate, the gripping plate hinged by the rotation of the cam member, and the gripping plate includes a fan fixing part for fixing the fan. In addition, the fan fixing unit provides a circuit inspection device, characterized in that the rotation of a predetermined angle, the movement of the fan is easy and there is an effect that can absorb the reaction force generated when the fan contacts the inspection terminal.

One embodiment of the present invention has an effect that can easily determine whether the circuit or the terminal is defective.

In addition, one embodiment of the present invention, there is an effect that can increase the discriminating power of the detected bad circuit or bad terminal.

In addition, one embodiment of the present invention, there is an effect that can absorb the reaction force generated when the fan contacts the test terminal.

1 shows a circuit inspection apparatus according to an embodiment of the present invention.
Figure 2 is a side view of the fan holding part according to an embodiment of the present invention.
3 is a view showing a fan gripping operation according to an embodiment of the present invention.
4 is a control method of the circuit inspection apparatus according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. On the other hand, the configuration of the device to be described below is not intended to limit the scope of the present invention, but to describe the embodiment of the present invention, the same reference numerals throughout the specification represent the same components.

1 to explain the structure of the circuit inspection apparatus 100 according to an embodiment of the present invention.

The circuit inspection apparatus 100 provides a space in which various components are installed and a circuit test board 110 that provides an electrical connection between the components, and a plurality of connector terminals 140 provided on the circuit test board 110. , Holding the fan 137 and hinged movement of the fan 137, and measuring the current of the test terminal 200 connected to the connector terminal 140 and controlling the movement of the fan holding unit 130. It consists of a control unit 120.

The fan holding unit 130 and the control unit 120 may be provided on the circuit test board 110, and the control unit 120 is electrically connected to the fan holding unit 130 and the plurality of connector terminals 140.

The circuit test board 110 may be a general circuit board and may have a housing shape including a circuit board therein.

A plurality of connector terminals 140 are installed and a plurality of test terminals included in a specific device to be tested are connected. Through connection with the connector terminal 140, the control unit 120 may detect a failure of the plurality of test terminals themselves included in a specific device or a bad assembly of the connector terminal 140 and the test terminal.

Before connecting one or more test terminals 200 to the plurality of connector terminals 140, the number of test terminals 200 to be connected may be input to the input unit 121 of the controller 120. This is to activate only the connector terminal 140 of the number corresponding to the total number of the test terminal 200.

The control unit 120 may include an input unit 121 which is a means for inputting a command to control the circuit test apparatus 100, an output unit 122 for displaying a result of executing the command or indicating a state of the circuit test apparatus 100, And one or more LEDs 123.

In an exemplary embodiment of the present invention, the input unit 121 may input an on / off signal for operating the circuit test apparatus 100, the number of test terminals 200, and the like. In addition, input signals for controlling the fan holding unit 130 and the connector terminal 140 may be input.

The output unit 122 may include a display device and / or a speaker device. If there is a problem with the device connected to the connector terminal 140, an error display may be displayed through the display device or an error sound may be generated through the speaker device.

In one embodiment of the present invention, two LEDs 123 may be provided. As a result of the inspection, if the device to be inspected is defective, only the red LED may be lit. On the other hand, if the test result is a normal device, only the green LED may be turned on.

When one or more test terminals 200 are connected to the connector terminals 140, the controller 120 senses a current flowing in the test terminal 200. The current value detected by each test terminal 200 is stored in the control unit 120, and the control unit 120 determines whether the stored current value is greater than or equal to a set value.

When the value of the current flowing through each of the test terminals 200 is greater than or equal to the set value, the controller 120 turns on the green LED and / or operates the fan holding unit 130. On the other hand, if the value of the current flowing in any one of the test terminal 200 is less than the set value, the control unit 120 turns on the red LED and the fan holding unit 130 does not operate.

When the fan gripping unit 130 operates, the fan 137 provided in the fan gripping unit 130 comes into contact with any one test terminal 200 by the hinge movement of the fan gripping unit 130. In the exemplary embodiment of the present invention illustrated in FIG. 1, the test terminal 200 closest to the fan holding unit 130 and the fan 137 may contact each other.

A mark (mark) is written on the test terminal 200 through the contact between the fan 137 and the test terminal 200. When inspecting a plurality of devices through the circuit inspection apparatus 100 has an effect that can be easily recognized later the device that has received a normal determination.

2 illustrates the structure of the fan gripping portion 130 in detail.

The fan gripping unit 130 includes a base plate 132 supported on the circuit inspection board 110 and a gripping plate 133 connected to the base plate 132 and the hinge 131, and holding the fan 137. It includes a hinge portion and a cam member 134 provided in the base plate 132, rotated by the drive unit and in contact with the lower surface of the holding plate 133.

In one embodiment of the present invention, the base plate 132 is fixed to the circuit board 110, but may be provided separately from the circuit board 110.

The gripping plate 133 is a rotation insertion hole 133a into which the fan fixing part 135 which fixes the fan on the gripping plate 133 is rotatably inserted and the stopper 133b which limits the rotation angle of the fan fixing part 135. It includes. The holding plate 133 further includes a pan support 136 for supporting the opposite end of the fan 137. The pan support 136 is provided at a position closer to the end of the gripping plate 133 that is not coupled to the hinge 131 than the rotation insertion hole 133a.

In one embodiment of the present invention, the rotation axis of the fan fixing part 135 is parallel to the rotation axis of the hinge 131.

The fan fixing part 135 is provided to be able to rotate a predetermined angle. This is to absorb some of the force applied to the fan 137 when the fan 137 contacts the test terminal 200 as the gripping plate 133 rotates.

However, since the rotation range of the fan fixing part 135 is excessively large unless the fan fixing part 135 is rotated, the stopper 133b is provided around the rotation insertion hole 133a. The stopper 133b may be fixedly coupled to the gripping plate 133.

In one embodiment of the present invention, the stopper 133b is provided at the rear side of the fan fixing part 135. Specifically, the stopper 133b is positioned between the rotation insertion hole 133a and the end of the gripping plate 133 which is not coupled to the hinge 131 and is provided at a position contacting the rotation insertion hole 133a.

The fan fixing part 135 includes a rotation insertion part 135a that can be inserted into the rotation insertion hole 133a and a body part 135b that supports the fan 137. Rotation insertion portion 135a may be hinged in the rotation insertion hole (133a). The body portion 135b includes a space into which the fan 137 can be inserted and is made of an elastic material so that the inserted fan 137 can be fixed.

The fan support 136 is configured to support the end of the fan 137 to absorb the force received when the fan 137 contacts the test terminal 200. That is, the pan support 136 is made of an elastic material.

The cam member 134 is configured to induce a hinge movement of the gripping plate 133, and the motion of the cam member 134 will be described with reference to FIGS. 2 and 3.

The cam member 134 includes a rotating shaft 134a and the rotating shaft 134a is connected to a driving device (not shown). The rotating shaft 134a is provided at a position spaced a predetermined distance from the center of the cam member 134. In addition, the cam member 134 is provided to penetrate the base plate 132, and is provided to contact the lower surface of the holding plate 133. Therefore, when the cam member 134 rotates according to the operation of the driving device, the base plate 132 is not affected by the cam member 134, but the grip plate 133 is hinged by the cam member 134. do.

When the fan gripping unit 130 receives an operation signal from the control unit 120, the driving device may be controlled such that the cam member 134 rotates only one round (360 degrees). Even if the driving device rotates only a predetermined angle in one direction, the holding plate 133 may be rotated to a specific position and then returned to its original position. Therefore, there is no need to use a bidirectional rotary motor. In addition, since the surface of the cam member 134 is a curved surface, the holding plate 133 does not show a rapid rotational movement. Therefore, the fan holding unit 130 is excellent in durability.

2 illustrates a standby state when the fan grip unit 130 does not receive an operation signal from the control unit 120, and FIG. 3 illustrates a cam member when the fan grip unit 130 receives an operation signal from the control unit 120. The state in which 134 rotates is shown.

When the currents flowing in one or more test terminals 200 connected to the connector terminals 140 are all equal to or greater than a set value, the controller 120 transmits an operation signal to the fan holding unit 130. The fan gripping unit 130 receiving the operation signal operates the driving device to allow the fan 137 and the gripping plate 133 to hinge on the base plate 132. Due to the hinge movement of the gripping plate 133 according to the rotation of the cam member 134, the fan 137 contacts the inspection apparatus 200, and the inspection terminal 200 receives a mark (mark). Later, the user may immediately determine whether the device that is the inspection target is defective by only displaying the mark of the inspection terminal 200.

Figure 4 shows a control method of the circuit inspection apparatus 100 according to an embodiment of the present invention.

The control method of the present invention is a connection step (S100) for connecting at least one test terminal 200 to each connector terminal, a measuring step (S200) for measuring the current of the at least one test terminal 200, and the measured current is When the size is larger than the set size, the LED is operated and the fan holding unit 130 is hinged to the display step S300 such that the fan 137 is in contact with any one of the test terminals 200.

It may further include an input step of inputting the number of the test terminal 200 to be connected before performing the connection step (S100). The number of connector terminals 140 corresponding to the number value of the test terminals 200 input through the input step is activated.

Meanwhile, surfaces of the hinge 131, the base plate 132, the grip plate 133, the cam member 134, the pan support 136, and the connector terminals 140 may be damaged by friction or impact. Corresponds to Thus, in the case of the surface of the above configuration, it can be formed of the following plastic composition.

Plastic composition according to an embodiment of the present invention comprises a polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. The present invention can improve the mechanical properties such as heat resistance, durability, improve the torsional phenomenon, by promoting the metabolism by radiating far infrared rays and the plastic sheet which can improve the storage stability of the food stored in the manufactured plastic container It can have the effect of manufacturing (product).

Polypropylene resin is known as an environmentally friendly material that is inexpensive for performance and has no risk of contact with contents such as food or cosmetics. It is a thermoplastic resin obtained by polymerizing propylene, and has chemical resistance and mechanical properties. Excellent thermal properties. Polypropylene may be at least one selected from propylene homopolymer, random copolymer and block copolymer, but in order to improve mechanical properties, the homopolymer and the random copolymer may be mixed in a weight ratio of 3: 2. It is preferable.

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and is excellent in high fluidity, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high density polyethylene resin may have the effect of improving the formability by mixing with the above-described polypropylene resin to enhance the tensile force in the production of plastic sheets or products, it is possible to use a variety of known products.

Talc is to improve the mechanical properties of the plastic composition, such as strength, heat resistance, etc., it is preferable to use a talc powder having a particle size of 150 ~ 200 mesh (mixing) for polypropylene resin and the like. In addition, talc may be used in admixture with other filler components, and preferably, may be used in admixture with a dolomite powder in a weight ratio of 1: 1 to contribute to improving durability of the plastic composition.

Germanium is a silver-white semimetal, which emits large amounts of far-infrared rays and anions, which are beneficial to the human body, thereby promoting metabolism. In addition, due to the semiconductor properties, germanium is in contact with the skin, the germanium ions (outer electrons) enter the body and acts to increase the vitality. Once inside the body, it is discharged out of the body in 20-30 hours with various harmful substances, so there is no poisoning or side effects. In particular, when the inorganic germanium particles come into contact with human skin, semiconductor properties enter the skin tissue by the penetration pressure activity of the outer electrons. Germanium, which has penetrated into the capillaries in the subcutaneous tissue, has been found to move electrons in the blood vessels through the blood vessel walls, to purify the blood by normalizing blood, and to discharge the excess electron flow to relieve pain. Germanium may be used in powder form, and after cutting the germanium gemstone finely to 3 cm or less, it is preferable to grind the cut germanium gemstone to a particle size of 80 to 100 mesh.

In one embodiment, the plastic composition preferably comprises 110 to 130 parts by weight of high density polyethylene resin, 170 to 190 parts by weight of talc and 1 to 10 parts by weight of germanium powder based on 100 parts by weight of polypropylene resin. When the plastic sheet is manufactured using the plastic composition, it is important to adjust the specific gravity of the plastic composition in order to exclude distortion, and the like, and the specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05. That is, when the high density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight with respect to 100 parts by weight of polypropylene resin, the mechanical properties such as durability are limited. If the content exceeds 130 parts by weight or the talc exceeds 190 parts by weight, the specific gravity of the plastic composition may increase, resulting in poor moldability. Further, when the germanium powder is less than 1 part by weight with respect to 100 parts by weight of polypropylene resin, the far-infrared emission effect due to germanium is hardly expressed, and when it exceeds 10 parts by weight, mixing with other components is inhibited and moldability is poor. Can be done.

In one embodiment, the above-described plastic composition may include glass fiber reinforced plastic to enhance impact resistance. Fiberglass Reinforced Plastic (FRP) is a material that combines an aromatic nylon fiber and a thermosetting resin with a glass-based mineral as a main raw material and a glass-based mineral. The glass-based mineral may use at least one selected from the group consisting of silica sand, limestone, feldspar and soda cycle, but is not limited thereto. As a thermosetting resin, various well-known thermosetting resin can be used, Preferably, polyester and an epoxy resin can be used. Glass fiber reinforced plastics can be manufactured by mixing materials such as glass-based minerals into a melting furnace, and each air layer sealed between the glass fibers acts as a heat insulating layer, which is excellent in nonflammability, sound absorption, and workability. It also has the advantage of being stronger than iron, lighter than aluminum, and not rusting. In addition, it is excellent in incombustibility and does not deform to heat, and is easy to process. At this time, it is preferable to add a glue in order to improve the mixing properties of the glass fiber reinforced plastic (pellet form) and PVC. Glue is a substance that solidifies the liquid by orphaning animal skins, intestines, and bones, and can solve problems such as environmental hormone release while improving binding strength of each component. Glass fiber reinforced plastics and glues are preferably contained in 15 to 25 parts by weight and 2 to 7 parts by weight with respect to 100 parts by weight of polypropylene resin. When less than the above range, the impact resistance strengthening and compounding may be inferior, and when it exceeds the above range, a cracking phenomenon may occur in the production of the product, it is uneconomical.

In one embodiment, the plastic composition may include a cork powder to improve the elastic force when producing the product. Cork powder can be prepared by removing the bark of the oyster oak, and then grinding. As cork powder, it is preferable to use finely ground particles filtered into a mesh of 400 mesh or more for compatibility with polypropylene resin and the like. It is preferable that cork powder is contained 5-10 weight part with respect to 100 weight part of polypropylene resins. When the cork powder is less than 5 parts by weight, the degree of improvement in elasticity is insignificant, and when the cork powder is more than 10 parts by weight, the pores formed therein at the time of manufacture of the product may become large and durability may be weakened.

In addition, sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder may be further included to improve the compatibility of the cork powder with other ingredients. Sucrose not only smoothes the pores formed between the cork powder, but also may cause viscosity in the mixing process with PVC and may trap molecules causing off-flavor problems, thereby contributing to the problem of off-flavor problems. It is preferable to use sucrose as a powder filtered by 500 mesh net, and it is preferable to include 1-4 weight part with respect to 100 weight part of polypropylene resins. When sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant, and when it is more than 4 parts by weight, it is not only economical but also weakens the mechanical properties of the product.

In one embodiment, the plastic composition may comprise alum powder. Alum are used may be potassium alum (potassium aluminum sulfate, AlK (SO _{4) 2} o 12H ₂ O), can be obtained from natural myeongbanseok. Specifically, the alum is dissolved in water, filtered, and then hung, and when cooled, irregular crystals may be produced by drying them. It is preferable that alum is contained 2-5 weight part with respect to 100 weight part of polypropylene resins. If the content of alum is less than 2 parts by weight, the effect by alum is negligible, and if it exceeds 5 parts by weight, it is uneconomical.

In one embodiment, the present invention may include boehmite (AlO (OH)) to improve the antimicrobial properties. Boehmite can use both γ-boehmite, α-boehmite and pseudo-Boehmite. Especially, it is preferable to use gamma-boehmite which is excellent in crystallinity, is excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property. γ-boehmite can be produced by supercritical synthesis of water (pure) and aluminum (Al) alone. Boehmite is preferably contained in 3 to 8 parts by weight with respect to 100 parts by weight of polypropylene resin. If the content of boehmite is less than 3 parts by weight, it is difficult to express the antibacterial effect to be achieved, and if it exceeds 8 parts by weight, there is a fear that the mixing with other components is impaired.

Hereinafter, the configuration of the present invention and its effects through specific examples and comparative examples will be described in more detail. However, this embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

Example 1

A plastic composition was prepared by mixing 180 kg of polypropylene resin, 200 kg of high density polyethylene resin (HDPE), 310 kg of talc, and 15 kg of germanium powder.

Example 2

Prepared in the same manner as in Example 1, 36kg glass fiber reinforced plastic, 9kg glue was further mixed to prepare a plastic composition, which was made as Example 2.

Example 3

Prepared in the same manner as in Example 2, 9kg cork powder, 5kg sucrose powder, 5kg alum powder, 9kg γ-boehmite was further mixed to prepare a plastic composition, which was defined as Example 3.

[Comparative Example]

Except for talc, it was prepared in the same manner as in Example 1, which was used as a comparative example.

Experimental Example 1: Evaluation of Impact Resistance

Specimens (20cm * 30cm, thickness 20mm) were prepared using the plastic composition of the Examples and Comparative Examples, and after dropping the weight of 3kg at 2m height, the degree of breakage of each specimen was measured and the results are shown in Table 2 below. It was.

TABLE 1

As can be seen from Table 2, it can be seen that the examples including talc were excellent in impact resistance compared to the comparative example without talc. In particular, in Examples 2 and 3 containing glass fiber reinforced plastics, the best results were obtained.

Experimental Example 2: Evaluation of Heat Resistance

After the sample of Experiment 1 was heated for 3 hours in a hot-air circulating heating furnace maintained at 80 ° C., yellowness was visually observed, and the results are shown in Table 3 below.

TABLE 3

As can be seen from Table 3, unlike the comparative example, the yellowing part was hardly observed. Through this, it was found that the heat resistance of the embodiment is very excellent compared to the comparative example.

Experimental Example 3: Antimicrobial Evaluation

The antimicrobial activity test (JIS Z 2801) was performed about Example 1, Example 3, and a comparative example. Aspergillus niger ATCC 9642 (fungus) was used as a test strain, and the antibacterial activity (antibacterial activity) was evaluated and listed in Table 4 below.

TABLE 4

The antimicrobial activity value is the value of the antimicrobial evaluation by comparing the number of strains cultured for a certain time. If the value is 1 or more, 90% or more strains, if 2 or more, 99% or more strains, 3 or more, 99.9% or more strains If 4 or more, 99.99% or more strains, 5 or more, 99.999% or more strains are considered to have an antimicrobial effect.

As can be seen from Table 4, in the case of Example 3 containing γ-boehmite, it was predicted that the antimicrobial activity is much better than the other cases.

Meanwhile, the circuit test plate 110 and the base plate 132, the circuit test plate 110 and the connector terminals 140, and the circuit test plate 110 and the main body of the controller 120 may be adhered with an adhesive composition. have. Description of the adhesive composition is as follows.

Adhesive composition according to an embodiment of the present invention, the adhesive composition comprising a main agent and a curing agent, the main material is 30 to 90 parts by weight of ethylene vinyl acetate (EVA) resin, 1 to 30 parts by weight of polyvinyl alcohol (PVA), 10-30 weight part of water, 5-30 weight part of calcium carbonates, 0.1-1 weight part of surfactants, and 1-20 weight part of thixotropic imparting agents are included, and a hardening | curing agent contains an isocyanate compound. The present invention is a water-soluble two-component adhesive composition consisting of a main agent and a curing agent, and can be coated and cured to prepare an adhesive sheet or an adhesive, and have excellent physical properties such as plywood, adhesiveness, heat resistance, etc. without contaminating the environment. It can be used for sheets of various plastic materials, such as wooden boards, inorganic boards such as magnesium boards, and PVC.

The main material basically includes ethylene vinyl acetate (EVA) resin, polyvinyl alcohol (PVA), water, calcium carbonate, surfactant and thixotropic imparting agent. The ethylene vinyl acetate resin is the main component of the main material, The strength of the adhesive sheet or the adhesive can be kept constant. Conventionally, an epoxy resin was used as a main component of an adhesive sheet or an adhesive. In the adhesive sheet or adhesive using an epoxy resin, volatile organic compounds such as benzene and toluene were released to adversely affect the environment and the human body. However, the present invention can solve problems such as environmental problems by excluding the epoxy resin.

Polyvinyl alcohol (PVA) serves to improve the heat resistance, water resistance and adhesion of the adhesive sheet or adhesive prepared. The polyvinyl alcohol is preferably contained in 1 to 30 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate resin. When the polyvinyl alcohol is less than 1 part by weight, it is difficult to improve heat resistance and the like, and when it exceeds 30 parts by weight, the relative content of ethylene vinyl acetate may be reduced to weaken the cohesion of the adhesive sheet or the adhesive. In addition, the present invention may use antimony oxide and zirconium oxide together with polyvinyl alcohol in order to complement the functionality of polyvinyl alcohol when used in ondol floors and the like. Antimony oxide and zirconium oxide are those that can improve the heat resistance of the adhesive sheet or adhesive prepared, it is preferably included 5 to 10 parts by weight with respect to 30 to 90 parts by weight of ethylene vinyl acetate resin. If it is less than the above range, the heat resistance enhancing effect is insignificant, and if it exceeds the above range, it is uneconomical.

Water is used as the solvent for the subject. The present invention does not use a volatile organic solvent unlike the conventional adhesive sheet or adhesive has an effect that can solve the environmental pollution problem. It is preferable that water is contained in 10-30 weight part with respect to 30-90 weight part of ethylene vinyl acetate resins. If the water is less than 10 parts by weight, it is not possible to effectively dissolve ethylene vinyl acetate resin or the like, and if it exceeds 30 parts by weight, it may be too diluted to lower the strength of the adhesive sheet or the adhesive.

Calcium carbonate controls the viscosity of the adhesive composition and reduces shrinkage during curing. Calcium carbonate is preferably included at 5 to 30 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate (EVA) resin. When the calcium carbonate is less than 5 parts by weight, sufficient shrinkage does not occur during curing, so that the hardness of the adhesive sheet or the adhesive may be poor, and when it exceeds 30 parts by weight, the viscosity may be so tight that productivity may be reduced. In addition, the present invention may use a variety of materials, such as light coals, clays in place of calcium carbonate, for example, dolomite and / or talc (talc) may be used. At this time, in order to improve the mechanical properties, it is preferable to use dolomite and talc mixed in a weight ratio of 1: 1. In addition, it is preferable that the powder has a particle size of 150 to 200 mesh, and when the powder is pulverized to have a particle size of 150 to 200 mesh, it is compatible with other components such as ethylene vinyl acetate resin. Can be improved.

Surfactants are used to reduce surface tension and improve applicability when mixing the adhesive composition. It is preferable that surfactant is contained in 0.1-1 weight part with respect to 30-90 weight part of ethylene vinyl acetate resins. The surfactant may be a known nonionic surfactant or anionic surfactant, but in order to effectively reduce surface tension, it is preferable to use a gemini-type anionic surfactant containing 8 to 14 carbon atoms in the alkyl chain.

The thixotropic agent is to prevent the adhesive composition from flowing down when the adhesive composition is applied to form the adhesive sheet or the adhesive so as to prevent the adhesive composition from flowing out, and various known materials such as silicas and acrylic copolymers may be used. Although may be used, it is preferable to use clay. Clay is a collection of thin hydrous silicate minerals, which are plasticized when mixed with an appropriate amount of water, exhibit rigidity when dried, and sinter when baked at high temperatures. Specifically, at least one powder selected from the group consisting of crypts, fumed silica and bentonite may be used, but in order to obtain the best effect, it is preferable to use a mixture of fumed silica and bentonite in a weight ratio of 1: 1. It is preferable that a thixotropic imparting agent is included in 1-20 weight part with respect to 30-90 weight part of ethylene vinyl acetate resins. If the thixotropic agent is less than 1 part by weight, the flowability cannot be sufficiently controlled. If the thixotropic agent is more than 20 parts by weight, the flowability may disappear so that productivity may be reduced.

In addition, the subject matter may further comprise sodium silicate to improve the adhesion of the adhesive sheet or adhesive produced. Sodium silicate, unlike conventional adhesives, does not cause pollution and is environmentally friendly and has excellent adhesion. Sodium silicate is preferably included in 3 to 7 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate resin on a solids basis. If the sodium silicate is less than 3 parts by weight, the degree of improvement in adhesion performance is insignificant, and if it exceeds 7 parts by weight, mixing with other components may be inferior.

In addition, the subject matter may further comprise molybdenum disulfide to improve the wear resistance of the adhesive sheet or adhesive produced. Molybdenum disulfide (MoS ₂ ) is contained in granite and is found in thin veins. Molybdenum disulfide (MoS ₂ ) has the inherent properties of hexagonal crystal structure in the form of shear, such as graphite, but lubrication is superior to graphite. Molybdenum disulfide is preferably contained in 1 to 5 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate resin on a solids basis. If the molybdenum disulfide is less than 1 part by weight, the wear resistance cannot be effectively improved, and if it exceeds 5 parts by weight, the adhesive force may be lowered. At this time, copper powder may be mixed and used together with molybdenum disulfide.

In addition, the subject may further include a flame retardant to improve the flame retardancy of the adhesive sheet or adhesive produced. The flame retardant is preferably included 1 to 5 parts by weight based on 100 parts by weight of ethylene vinyl acetate resin. When the flame retardant is less than 1 part by weight, the degree of improvement of flame retardancy is insignificant, and when the flame retardant is more than 5 parts by weight, it is not only economical but also may be inferior in mixing with other components. Flame retardants may use alum powders. Alum are used may be potassium alum (potassium aluminum sulfate, AlK (SO _{4) 2} o 12H ₂ O), can be obtained from natural myeongbanseok. Specifically, the alum is dissolved in water, filtered, and then hung, and when cooled, irregular crystals may be produced by drying them.

In addition, the subject matter may further include aluminum hydroxide to improve the antimicrobial properties of the adhesive sheet or adhesive produced. As the aluminum hydroxide, boehmite (AlO (OH)) is preferably used. Boehmite can use both γ-boehmite, α-boehmite and pseudo-Boehmite. Especially, it is preferable to use gamma-boehmite which is excellent in crystallinity, is excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property. γ-boehmite can be produced by supercritical synthesis of water (pure) and aluminum (Al) alone. Aluminum hydroxide is preferably included 5 to 10 parts by weight based on 30 to 90 parts by weight of ethylene vinyl acetate. If the amount of aluminum hydroxide is less than 5 parts by weight, it is difficult to express the antibacterial effect to be achieved, and if it exceeds 10 parts by weight, there is a fear that the mixing with other components is impaired.

The hardening | curing agent can use what contains an isocyanate compound. The isocyanate compound has a good solubility in water, so that the curing agent is uniformly mixed with the main material, so that the curing time can be shortened by maintaining the proper viscosity and hardness, and the work life is remarkably extended by extending the pot life when mixing the main agent and the curing agent. It works to improve. The isocyanate compound is preferably a compound containing two or more isocyanate groups in one molecule, in particular toluen-diisocyanate (TDI), hydrogenated TDI, trimethyl propane-TDI, triphenylmethane- Tripisnylmethane-triisocyanate (TTI), diphenylmethane-4,4-diisocyanate (dipehenylmethane-4,4-diisocianate (MDI), hydrogenated MDI, or hexanemethylene-diisocyanate (HDI) It is preferable to use. It is preferable that a hardening | curing agent is included in 1-20 weight part with respect to 100 weight part of main materials.

The above-described adhesive sheet or adhesive is prepared by mixing a main material and a curing agent to prepare a water-soluble two-component adhesive composition, and then applying and curing the product at a work site, except for some of the components or all of the components as necessary. It may be used, and may further include a dispersant, antifoam, preservative, thickener and the like within the scope of not impairing the object of the present invention, may further include a pigment component to implement various colors of the adhesive sheet or adhesive prepared have.

Hereinafter, the configuration of the present invention and its effects through specific examples and comparative examples will be described in more detail. However, this embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

Example 1

A main body was prepared by mixing 80 parts by weight of ethylene vinyl acetate, 20 parts by weight of polyvinyl alcohol, 25 parts by weight of water, 10 parts by weight of calcium carbonate, 1 part by weight of surfactant, and 5 parts by weight of thixotropy agent, and toluene-diisocyanate. 25 parts by weight of a curing agent containing (toluen-diisocyanate, TDI) was mixed, and then applied and cured to prepare an adhesive sheet or an adhesive, which was defined as Example 1.

In this case, a surfactant having 8 carbon atoms Gemini surfactant was used. The overall synthesis of the surfactants began with the reaction of diamines with 1-bromoalcaine. N, N, N ', N'-tetramethyl-1,3-diaminopropane (N, N, N', N'-tetramethyl-1,3-diaminopropane) 0.1 mole and 1-bromooctane (1 0.2 mole of -bromooctane) was added to 300 g of acetonitrile and stirred for 30 minutes. The solution was refluxed at 353K for 12 hours, and then the acetonitrile solvent was removed using a rotary evaporator. The product was recrystallized by adding 500 g of diethyl ether to the obtained product. This was filtered and washed with 500 g of diethyl ether to remove unreacted impurities. Gemini surfactants were prepared by subjecting the above processed product to a 323 K vacuum oven for 12 hours to remove residual solvent.

Example 2

Except for the addition of 5 parts by weight of thymic oxide and 5 parts by weight of zirconium oxide to the subject, it was prepared in the same manner as in Example 1, and was made as Example 2.

Example 3

Except for the addition of 5 parts by weight of sodium silicate, 3 parts by weight of molybdenum disulfide, 3 parts by weight of alum, 8 parts by weight of γ-boehmite in the form of powder, was prepared in the same manner as in Example 2, which was It was.

[Comparative Example]

Conventional epoxy ondol floor adhesive (SEP-4300, Samchang Kiyeon Co., Ltd.) was used as a comparative example.

Experimental Example 1: Adhesion Test

The adhesion test (KS F 4715) was carried out for the Examples and Comparative Examples, the results are summarized in Table 1 below.

TABLE 1

The adhesion strength of LH construction was 0.8 N / mm 2 or more, the pass criterion, and the examples and the comparative examples both satisfied the pass criterion. However, it was found that the adhesive strength of the example is superior to that of the comparative example.

Experimental Example 2: Evaluation of Heat Resistance

After the adhesive sheet or the adhesive of the Example and Comparative Example was heated for 8 hours in a hot air circulating heating furnace maintained at 80 ℃ yellowness was visually observed, the results are shown in Table 2 below.

TABLE 2

As can be seen from Table 2, unlike the comparative example, the yellowing part was hardly observed. Through this, it was found that the heat resistance of the embodiment is very excellent compared to the comparative example.

Experimental Example 3: Antimicrobial Evaluation

The antimicrobial test (JIS Z 2801) was carried out on the adhesive compositions of Example 3 and Comparative Examples. Aspergillus niger ATCC 9642 (fungus) was used as a test strain, and the antibacterial activity (antibacterial activity) was evaluated and listed in Table 3 below.

TABLE 3

The antimicrobial activity value is the value of the antimicrobial evaluation by comparing the number of strains cultured for a certain time. If the value is 1 or more, 90% or more strains, if 2 or more, 99% or more strains, 3 or more, 99.9% or more strains If 4 or more, 99.99% or more strains, 5 or more, 99.999% or more strains are considered to have an antimicrobial effect.

As can be seen from Table 3, in the case of Example 3 containing γ-boehmite, it was found that the antimicrobial activity is very excellent compared to the comparative example.

The adhesive sheet includes an adhesive composition. And, a plastic sheet is located on the adhesive sheet according to the present invention, the plastic sheet comprises a plastic composition.

The plastic composition includes polypropylene resin, high density polyethylene resin (HDPE), talc and germanium powder. The present invention can improve the mechanical properties such as heat resistance, durability, and can improve the torsional phenomena, and by promoting the metabolism and minimizing the hazards to the worker handling the hook by radiating far infrared rays. Referring to FIG. 1, since the second extension portion may contact the upper portion of the heavy material, the second extension portion should be highly durable, have a large heat resistance to withstand the friction caused by the loading of the heavy material, and the torsional phenomenon caused by the heat There should be no harm, and there should be no harm to workers working near the hook.

Polypropylene resin is known as an environmentally friendly material that is inexpensive for performance and has no risk of contact with contents such as food or cosmetics. It is a thermoplastic resin obtained by polymerizing propylene, and has chemical resistance and mechanical properties. Excellent thermal properties. Polypropylene may be at least one selected from propylene homopolymer, random copolymer and block copolymer, but in order to improve mechanical properties, the homopolymer and the random copolymer may be mixed in a weight ratio of 3: 2. It is preferable.

High-density polyethylene (HDPE) resin is a synthetic resin produced by polymerizing ethylene, and is excellent in high fluidity, rigidity, impact resistance, electrical insulation, moldability, and cold resistance. The high density polyethylene resin may be mixed with the above-described polypropylene resin to have an effect of improving the moldability by strengthening the tensile force during manufacturing of the accommodating part 15 or the product, and various known products may be used.

Talc is to improve the mechanical properties of the plastic composition, such as strength, heat resistance, etc., it is preferable to use a talc powder having a particle size of 150 ~ 200 mesh (mixing) for polypropylene resin and the like. In addition, talc may be used in admixture with other filler components, and preferably, may be used in admixture with a dolomite powder in a weight ratio of 1: 1 to contribute to improving durability of the plastic composition.

Germanium is a silver-white semimetal, which emits large amounts of far-infrared rays and anions, which are beneficial to the human body, thereby promoting metabolism. In addition, due to the semiconductor properties, germanium is in contact with the skin, the germanium ions (outer electrons) enter the body and acts to increase the vitality. Once inside the body, it is discharged out of the body in 20-30 hours with various harmful substances, so there is no poisoning or side effects. In particular, when the inorganic germanium particles come into contact with human skin, semiconductor properties enter the skin tissue by the penetration pressure activity of the outer electrons. Germanium, which has penetrated into the capillaries in the subcutaneous tissue, has been found to move electrons in the blood vessels through the blood vessel walls, to purify the blood by normalizing blood, and to discharge the excess electron flow to relieve pain. Germanium may be used in powder form, and after cutting the germanium gemstone finely to 3 cm or less, it is preferable to grind the cut germanium gemstone to a particle size of 80 to 100 mesh.

It is preferable that a plastic composition contains 110-130 weight part of high density polyethylene resins, 170-190 weight part of talc, and 1-10 weight part of germanium powder with respect to 100 weight part of polypropylene resins. When manufacturing the accommodating part 15 using the plastic composition, it is important to control the specific gravity of the plastic composition in order to exclude distortion, etc., the specific gravity is preferably 1.02 to 1.10, more preferably 1.03 to 1.05. . That is, when the high density polyethylene resin is less than 110 parts by weight or the talc is less than 170 parts by weight with respect to 100 parts by weight of polypropylene resin, the mechanical properties such as durability are limited. If the content exceeds 130 parts by weight or the talc exceeds 190 parts by weight, the specific gravity of the plastic composition may increase, resulting in poor moldability. Further, when the germanium powder is less than 1 part by weight with respect to 100 parts by weight of polypropylene resin, the far-infrared emission effect due to germanium is hardly expressed, and when it exceeds 10 parts by weight, mixing with other components is inhibited and moldability is poor. Can be done.

Meanwhile, the above-described plastic composition may further include various additive components in order to improve mechanical properties, mixing properties, moldability, antibacterial properties, and the like.

In one embodiment, the plastic composition may further comprise a garlic extract. Garlic extract is a natural adhesive component and functions as a binder to improve the mixing properties of other components such as polypropylene resin and high density polyethylene resin. The garlic extract is peeled and crushed garlic, 2 to 3 parts by weight of water per 1 part by weight of garlic, heated at 80-100 ℃ for 5 hours or more, the liquid component is extracted and filtered, and then filtered It can be prepared by concentrating the liquid component at 55 ~ 60 ℃. Garlic extract is preferably contained in 10 to 20 parts by weight based on 100 parts by weight of polypropylene resin. When the content of the garlic extract is less than 10 parts by weight, the polypropylene resin and talc may not be properly entangled, and thus the surface may not be formed evenly when the receiving part 15 is manufactured. There exists a possibility that dispersibility and mixing property may fall rather.

At this time, in order to supplement the function of the garlic extract can be used by mixing sucrose (C ₁₂ H ₂₂ O ₁₁ ) powder. Sucrose can be extruded in the form of a thin film in the stretching process for producing a plastic composition by improving the mixing properties of the entire composition, and the viscosity can be generated during mixing with polypropylene resins to trap molecules causing off-flavor problems It can also contribute to problem solving. Sucrose is preferably used in a powder containing 95 wt% or more of 1 ~ 120 ㎛ particle size filtered by a 120 mesh network, it is preferably included 1 to 5 parts by weight based on 100 parts by weight of polypropylene resin. When the content of sucrose is less than 1 part by weight, the effect expressed by sucrose is insignificant, and when it exceeds 5 parts by weight, the viscosity of the plastic composition may be excessively increased, making it difficult to form uniform sheets.

In one embodiment, the plastic composition may further comprise clay powder. Kaolin is a white clay whose main ingredients are kaolinite and halosite. It is excellent in abrasion and thermal shock. The clay is preferably included in 5 to 10 parts by weight based on 100 parts by weight of polypropylene. If the clay is less than 5 parts by weight, there is a problem that the resistance to the external environment is weak, if more than 10 parts by weight may not exhibit a synergistic effect of mechanical properties, such as low compressive strength.

The plastic composition may further comprise titanium dioxide (TiO ₂ ). Titanium dioxide can function as a filler that can improve the heat resistance of the plastic composition. It is preferable that titanium dioxide is contained in 5-15 weight part with respect to 100 weight part of polypropylene resins. If the titanium dioxide is less than 5 parts by weight, the wear resistance of the accommodating portion 15 formed by the plastic composition cannot be effectively improved, and if it exceeds 15 parts by weight, the workability may be lowered and the blendability with other components is achieved. This may not be good.

The plastic composition may further comprise aluminum hydroxide. Aluminum hydroxide functions as an antimicrobial agent that can improve the antimicrobial properties of plastic compositions. As the aluminum hydroxide, boehmite (AlO (OH)) is preferably used. Boehmite can use both γ-boehmite, α-boehmite and pseudo-Boehmite. Especially, it is preferable to use gamma-boehmite which is excellent in crystallinity, is excellent in thermal stability and chemical stability, structurally neutral, and excellent in antibacterial property. γ-boehmite can be produced by supercritical synthesis of water (pure) and aluminum (Al) alone. Aluminum hydroxide may be included in 2 to 7 parts by weight based on 100 parts by weight of polypropylene resin. If the content of aluminum hydroxide is less than 2 parts by weight, it is difficult to express the antibacterial effect to be achieved, and if it exceeds 7 parts by weight, there is a fear that the mixing with other components is impaired.

In addition, the plastic composition may further include a dispersant, an antifoaming agent, and the like within a range that does not impair the object of the present invention, and may further include a pigment component to implement various colors of the plastic composition.

Hereinafter, the configuration of the present invention and its effects through specific examples and comparative examples will be described in more detail. However, this embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

EXAMPLE

To prepare a plastic composition according to the composition of Table 1. Each material used commercially available material. In the case of garlic extract, it was prepared as described in the detailed description of the invention, and γ-boehmite was used as aluminum hydroxide.

TABLE 1

Experimental Example 1

After heating the composition of Examples 1 to 5, stretching to prepare a 10 mm thick plastic sheet, and confirmed the uniformity of the sheet surface, which is shown in Table 2 below. Uniformity was measured using a laser sensor (N ₂ laser, oscillation wavelength 337.1nm, UDHO Laser. LTD., Japan), and the surface roughness was measured by arbitrarily selecting 30 points (using standard deviation). And less than 0.3 was uniform, more than 0.3 was evaluated as nonuniform). At this time, Examples 1 and 5 went through the third stretching process in the longitudinal direction, Examples 2 to 4 went through the third stretching process in the order of the longitudinal direction, width direction, longitudinal direction.

TABLE 2

As in Table 2, in the case of Examples 1 to 5, the uniformity of the produced sheet was all good. Especially, it turned out that the uniformity of Example 3 is the most excellent.

Experimental Example 2: Torsion Test

After heating the composition of Examples 1 to 5, stretched to prepare a plastic sheet of 2mm thickness, and then molded by 100 plastic products, at this time, to evaluate the completeness of the final product, it is shown in Table 3 below It was. At this time, Examples 1 and 5 went through the third stretching process in the longitudinal direction, Examples 2 to 4 went through the third stretching process in the order of the longitudinal direction, width direction, longitudinal direction. For reference, FIG. 2 is a view showing a state in a good state, and FIG. 3 is a view showing a bad state (torsion phenomenon).

TABLE 3

As shown in Table 3, in Examples 2 to 4, it was possible to make a normal product of 90% or more, in particular, in Example 3, it was found that the failure rate was very small.

Experimental Example 3: Off-odor Test

Off-flavor tests were conducted on Examples 1 and 3 using ammonia gas. After the initial concentration measurement, the concentration after 5 minutes was measured to evaluate the deodorization rate, the results are shown in Table 4 below.

TABLE 4

As shown in Table 4, in the case of Example 1, there was little deodorizing effect, but in Example 3 it can be seen that it shows some deodorizing effect.

Experimental Example 4: Antimicrobial Test

The antimicrobial activity test (JIS Z 2801) was performed on the compositions of Examples 1 and 3. Test strains were used Staphylococcus aureus ATCC 6538 (E. coli), Escherichia coli ATCC 25922 (E. coli), and the antimicrobial activity (antibacterial activity) was evaluated in Table 5 below.

TABLE 5

The antimicrobial activity value is the value of the antimicrobial evaluation by comparing the number of strains cultured for a certain time. If the value is 1 or more, 90% or more strains, if 2 or more, 99% or more strains, 3 or more, 99.9% or more strains If 4 or more, 99.99% or more strains, 5 or more, 99.999% or more strains are considered to have an antimicrobial effect. In the case of Example 3, it was confirmed that the antimicrobial effect by γ-boehmite appeared.

The present invention may be practiced in various forms and is not limited to the above-described embodiment. Therefore, if the modified embodiment includes the components of the claims of the present invention will be seen as belonging to the scope of the present invention.

100: circuit inspection device
110: circuit test board 120: control unit 121: input unit
122: output unit 123: LED 130: fan holding unit
131: hinge 132: base plate 133: gripping plate
134: cam member 135: pan fixing part 136: pan support
137: fan 140: connector terminal 200: test terminal

Claims (1)

A circuit test board including a plurality of connector terminals;
A fan gripping portion that grips the fan and hinges the fan; And,
And a controller configured to sense a current of at least one test terminal connected to each connector terminal of the plurality of connector terminals, control an operation of the fan holding unit according to the sensed current value, and include an LED.
When all of the sensed current is more than the set size, the control unit is characterized in that the fan is in contact with any one of the test terminal by operating the LED and the fan gripping hinge,
The fan holding unit,
A hinge part including a base plate provided in the circuit test plate and a gripping plate hinged to the base plate and holding the fan; And,
And a cam member provided in the base plate and rotated by a driving unit to contact the lower surface of the holding plate.
The holding plate is hinged by the rotation of the cam member,
The gripping plate includes a fan fixing part for fixing the fan, wherein the fan fixing part is rotatable by a predetermined angle.

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