JP2020194337A - Detector and machine tool - Google Patents

Abstract

To provide a detector exhibiting an excellent liquid-tightness property, and a machine tool provided with the detector.SOLUTION: One detector 100 according to the present invention, that has a bottom part whose part comprises an opening 12. The detector comprises a liquid-tightness cylindrical body 10 made of metal to store a detection part 90 for detecting at least one wavelength of an electromagnetic wave by using the opening 12, a window part 30 for passing the foregoing wavelength, that liquid-tightly seals the opening 12 via a seal material 72, and an insulation material 40 arranged between the cylindrical body 10 and the detection part 90 in such a manner that the detection part 90 is not electrically connected to the cylindrical body 10.SELECTED DRAWING: Figure 3A

Description

The present invention relates to a detector and a machine tool.

Conventionally, detectors (also called "detectors" or "sensors") that detect electromagnetic waves of each wavelength including infrared rays (IR), visible rays, and ultraviolet rays (UV) have been used not only in various industrial fields but also in daily life. It is also widely used in daily life. For example, the above-mentioned detectors are also used in systems for monitoring the intrusion of suspicious persons into buildings, industrial equipment including various machine tools, and mobile equipment and electronic equipment indispensable for daily life.

In the field of fire extinguishing equipment and fire extinguishing equipment manufactured and sold by the applicant of the present application, a fire detector (also called a "flame detector") that detects a flame caused by a fire using an infrared sensor is a typical example of the detector. It is one. When using this fire detector, it depends on the environment in which it is installed, but it is affected by substances that can enter the inside of the fire detector, such as water (including water), gas, dust, and dust that exist in the surrounding area. It is required not to receive it or to reduce it as much as possible.

So far, a sealed structure of a fire detector for preventing water, dust, corrosive gas, etc. from entering the inside of the fire detector from a terminal portion has been disclosed (Patent Document 1).

JP-A-2002-123875

As described above, various detectors used in industrial equipment or various equipment used in daily life are particularly required to be considered in a situation where they are affected by functional deterioration or the like due to contact with or immersion in water. Among industrial equipment, a machine tool having a processing chamber in which a large amount of oil mist and / or water exists is a detector capable of accurately detecting electromagnetic waves of each wavelength even when exposed to the harsh atmosphere. Is strongly required to install.

In the sealed structure disclosed in Patent Document 1, in the main body case in which the fire detector is housed, a device is provided to improve the airtightness or liquidtightness of the sensor (light receiving element) on the side opposite to the light receiving side. Has been done. However, there is still much room for research and development toward the realization of a sealed structure with high accuracy and particularly high liquidtightness over the entire outer circumference of the detector, including the light receiving side of the detector that detects fire. There is.

The present invention greatly contributes to the realization of a detector capable of realizing a sealed structure having high accuracy and particularly high liquidtightness over the entire outer circumference of the detector by solving the above-mentioned problems, and a machine tool equipped with the detector. Is what you do.

The present inventors have conducted intensive research and analysis toward the realization of a closed structure having high accuracy and particularly high liquidtightness over the entire outer circumference of the detector. Furthermore, the present inventors have conducted trial and error to realize accurate detection of electromagnetic waves even when exposed to a harsh atmosphere in a treatment room where a large amount of oil mist and / or water is present, such as a machine tool. Repeated.

As a result, the present inventors have adopted a structure in which the detection unit is housed in the internal space of a tubular body having a bottom having an opening in part, and are made of metal, which is responsible for achieving high liquidtightness. It has been found that the above-mentioned problems can be solved by using the member, the metal member, and the member for preventing the outer periphery of the detection unit from being electrically connected to each other. The present invention was created based on the above-mentioned viewpoints and ideas.

One detector of the present invention comprises a liquid-tight tubular body made of a metal having a bottom having an opening in a part and accommodating a detection unit that detects at least one wavelength of an electromagnetic wave by using the opening. At least the outer periphery of the tubular body so that the window portion that allows the above-mentioned wavelength to pass through the above-mentioned opening through the sealing material and the said-mentioned detection portion are not electrically connected to the above-mentioned tubular body. The insulating material is arranged in the above, or the insulating material is arranged between the tubular body and the detection unit.

According to this detector, after adopting a structure in which the detection part is housed in a tubular body having a bottom having an opening in a part, a tubular body made of metal that realizes high liquidtightness and the tubular body. An insulating material arranged at least on the outer periphery of the tubular body, or an insulating material for preventing the tubular body and the detection unit from being electrically connected to each other is adopted. As a result, it is possible to realize a sealed structure in which the entire outer circumference of the detector is highly accurate and the liquidtightness is particularly improved, while maintaining the insulating property between the detection unit and its surroundings.

Further, another detector of the present invention is made of ABS resin, polypropylene (PP), which comprises a bottom having an opening in a part and accommodates a detection unit that detects at least one wavelength of electromagnetic waves using the opening. , Polysulfone (PC), Polysulfone (PE), Polysulfone (PS), Polybutylene terephthalate (PBT), Polyethylene terephthalate (PET), Polyacetal (POM), Polymethylmethacrylate (PMMA), Modified polyphenylene ether (m-PPE) , Ultrahigh molecular weight polyethylene (U-PE), polyetheretherketone (PEEK), polyphenylene terephthale (PPS), polyphenylsulfone (PPSU), polysulfone (PSU), polyethersulfone (PESU) and the above-mentioned resins and glasses. It comprises a tubular body consisting of at least one selected from a group of mixtures mixed with fibers (GF), and a window portion that tightly closes the above-mentioned opening via a sealing material and allows the above-mentioned wavelength to pass through. ..

This detector adopts a structure in which the detection unit is housed in a tubular body having a bottom having an opening in a part, and then a conductive material is temporarily adopted as a member constituting the outer circumference of the detection unit. Even if it is provided, it is provided with a tubular body made of the above-mentioned specific resin capable of exhibiting insulation between the detection unit and its surroundings and high liquidtightness. As a result, it is possible to realize a sealed structure in which the entire outer circumference of the detector is highly accurate and the liquidtightness is particularly improved, while maintaining the insulating property between the detection unit and its surroundings.

Further, the other detector of the present invention includes a tubular body made of a resin having a bottom portion having an opening in a part and accommodating a detection unit that detects at least one wavelength of an electromagnetic wave by using the opening. It is provided with a window portion for passing the above-mentioned wavelength, which closes the above-mentioned opening in a liquid-tight manner through a sealing material, and a liquid-tight metal layer or a metal cylinder provided along the outer peripheral surface of the above-mentioned tubular body. .. In addition, the detector is arranged so that the detector is not electrically connected to the metal layer or the metal cylinder.

According to this detector, a metal layer or a metal cylinder responsible for achieving high liquidtightness and the metal are adopted after adopting a structure in which the detection portion is housed in a tubular body having a bottom having an opening in a part. A tubular body made of resin for preventing the layer or metal cylinder and the detection unit from being electrically connected to each other is adopted. As a result, it is possible to realize a sealed structure in which the entire outer circumference of the detector is highly accurate and the liquidtightness is particularly improved, while maintaining the insulating property between the detection unit and its surroundings.

By the way, in each of the above-described inventions, adopting a configuration in which the detection unit is detachably housed in the tubular body is a preferable aspect from the viewpoint of facilitating repair or replacement of the detection unit. Further, the detection unit in each of the above-described inventions is typically a detection unit including a light receiving element that detects at least one electromagnetic wave having a wavelength of infrared rays (IR), visible light, and / or ultraviolet rays (UV). is there.

According to one detector of the present invention, a hermetically sealed structure with high accuracy and particularly improved liquidtightness over the entire outer circumference of the detector while maintaining insulation between the detector housed in the tubular body and its surroundings. Can be realized.

It is an overall external view which shows the detector in 1st Embodiment. It is a partial side sectional view of the tubular body and the insulating material which accommodates the detection part in 1st Embodiment, and the lid body in the AA direction. It is a partial side sectional view of the detector in the AA direction in the 1st embodiment. It is an assembly exploded view of the detector in 1st Embodiment. It is a usage state diagram as an example of a detector in 1st Embodiment. It is a usage state diagram as an example of a detector in 1st Embodiment. It is a schematic diagram of the machine tool provided with the detector in 1st Embodiment. It is a partial side sectional view corresponding to FIG. 3A of the detector in the second embodiment. It is a partial side sectional view corresponding to FIG. 3A of the detector in the third embodiment. It is a partial side sectional view corresponding to FIG. 3A of the detector in 4th Embodiment. FIG. 5 is a partial side sectional view corresponding to FIG. 3A of the detector according to the fifth embodiment. It is a partial side sectional view corresponding to FIG. 3A of the detector in the sixth embodiment. FIG. 3 is a partial side sectional view of the detector according to the seventh embodiment, corresponding to FIG. 3A.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this description, common reference numerals are given to common parts throughout the drawings unless otherwise specified. Further, in the figure, the elements of the present embodiment are not necessarily shown according to the scale. In addition, some reference numerals may be omitted in order to make each drawing easier to see.

<First Embodiment>
FIG. 1 is an overall external view showing the detector 100 of the present embodiment. Further, FIG. 2 is a partial side sectional view in the AA direction showing the tubular body 10 and the insulating material 40 in which the detector 100 in the present embodiment is housed, and the lid body 20. Further, FIG. 3A is a partial side sectional view of the detector 100 in the AA direction in the present embodiment. Further, FIG. 3B is an assembled exploded view of the detector according to the present embodiment. The electric cable drawn from the detection unit 90 is not shown in order to make the drawing easy to understand.

The detector 100 of the present embodiment is mainly composed of the following members (1) to (5).
(1) Known in a container (shield case) that is partially opened (not shown) to receive at least one of infrared (IR), visible light, and / or ultraviolet (UV) wavelength electromagnetic waves from the outside. Detection unit 90 containing a light receiving element
(2) A liquid-tight tubular body 10 made of metal that further accommodates the detection unit 90 and has a bottom having an opening 12 in a part thereof.
(3) A lid 20 that is liquid-tightly covered with a tubular body 10 and a known sealing material (known O-ring in this embodiment) 74.
(4) A window portion 30 that tightly closes the opening 12 via a known sealing material (known O-ring in this embodiment) 72 and allows each of the above wavelengths to pass through.
(5) Insulating material 40 arranged between the tubular body 10 and the detection unit 90 so that the detection unit 90 does not come into contact with the tubular body 10.

More specifically, the detector 90 of the present embodiment emits infrared (IR), visible light, and / or ultraviolet light (UV) emitted from some light source (eg, a flame, or a natural or artificial illuminant). It includes a light receiving element that receives at least one of electromagnetic waves having a wavelength of the above, and a circuit board that operates and controls the light receiving element. For example, a detection unit 90 having a light receiving element capable of detecting at least one (more preferably three) wavelengths of a unique electromagnetic wave (for example, infrared rays) emitted from a flame can be adopted. An example of the detection unit 90 that can be adopted in the present embodiment, which is sold by the applicant of the present application, is a detection device (model: SX-7000 or SX-3024III) provided with a three-wavelength infrared flame sensor as a light receiving element. Further, the terminal 98 provided on the upper portion of the detection unit 90 plays a role of electrically connecting the above-mentioned circuit board and the electric cable.

Further, the tubular body 10 of the present embodiment includes a bottom portion having an opening 12 in a part thereof, and the above-mentioned detection unit 90 is provided in the internal space 16. Further, the tubular body 10 is provided with an opening 12 so that the detection unit 90 can detect at least one wavelength of the electromagnetic wave.

Further, the material of the tubular body 10 of the present embodiment is a metal having liquidtightness. The material for producing the tubular body 10 is not particularly limited as long as it is a metal capable of having liquidtightness. Typical such materials are aluminum, brass, iron, or various stainless steel materials (eg, martensitic, ferrite, austenitic, two-phase, precipitation hardening). As the liquid-tight metal, materials capable of having high airtightness to water and / or oil (including oil mist) are C3604, A2017, A5052, A5056, A6061, A6063, SUS304, and the like. Since SUS304L, SUS316, SUS316L, ADC10, ADC12, AC4 series, P series, FDC series, and known liquid-tightening treatment typified by coating or plating treatment are applied, those materials should be adopted. Is a preferred embodiment.

By the way, "liquid-tight" or "liquid-tight" in this embodiment means IEC (International Electrotechnical Commission) standards (IEC144, IEC529 and DIN40).
A state that satisfies at least IPX7 in the grade of "protection against ingress of water" based on 05). The detector 100 of the present embodiment can exhibit liquidtightness exceeding IPX7 depending on the conditions of the material to be used.

Further, the lid 20 of the present embodiment is formed of a material that can be covered liquid-tightly by using the sealing material 74. The material for producing the lid 20 is not particularly limited as long as it is a liquid-tight metal or resin. Among the materials of the typical lid 20, the metal material is the same as that of the tubular body 10. Further, among the materials of the lid 20, the resin material is selected because it is easy to cut and has rigidity. For example, polyetheretherketone (PEEK), polyethylene (PE), polypropylene (PP), polycarbonate (PC), polyphenylsulfone (PPSU), polyphenylsulfone (PPSU), polybutylene terephthalate (PBT), polyethersulfone (PBT) PESU) and / or a material in which the rigidity of each of the above-mentioned resin materials is increased by using graphite or carbon. The above-mentioned metals and resins are all preferably materials that can exhibit high airtightness to water and / or oil (including oil mist).

The lid 20 of the present embodiment is provided with a through hole 22 for taking out an electric cable from the detection unit 90. The electric cable is connected by passing a connector 80 connected to the through hole 22.

Further, the window portion 30 of the present embodiment is formed from a material that allows at least one wavelength of an electromagnetic wave having a wavelength of infrared rays (IR), visible light, and / or ultraviolet rays (UV) to pass through. When the above-mentioned three-wavelength infrared flame sensor is adopted as a light receiving element, the window portion 30 uses glass (typically, sapphire glass) having a characteristic of passing infrared rays (also referred to as “infrared transmissive”). It is a molded substantially plate-shaped member. Further, the window portion 30 tightly closes the opening 12 via the sealing material 72.

In the present embodiment, the fixture (bolt in the present embodiment) 52 uses the non-through hole 18 of the bottom of the tubular body 10 and the through hole 48 of the insulating material 40 to form the insulating material 40. And the tubular body 10 are fixed. Further, the fixture (bolt in this embodiment) 54 uses the through hole of the bottom 94 of the detection unit 90 and the non-through hole 46 of the insulating material 40 to connect the detection unit 90 and the insulating material 40. Fix. As a result, the detection unit 90 is fixed to the tubular body 10 via the insulating material 40 of the present embodiment so as not to come into electrical contact with the tubular body 10. In order to make the drawing easier to see, a part of the lower left side of the paper surface of the detection unit 90 in FIG. 3A shows a state in which the container (shield case) is removed. It is also drawn in the same way in other embodiments.

As shown in FIGS. 2, 3A, and 3B, in the present embodiment, since the bottom surface of the insulating material 40 presses the end portion of the window portion 30, the sealing material 72 is used with higher accuracy. A high degree of liquidtightness with respect to the existing opening 12 can be maintained. Even if the pressure of gas, water, and / or oil (including oil mist) existing on the outside of the window portion 30 becomes high and a force is applied to separate the sealing material 72 and the window portion 30. The pressing of the end portion of the window portion 30 by the bottom surface of the insulating material 40 can contribute to the maintenance of liquidtightness.

In addition, as shown in FIGS. 3A and 3B, the sealing material 72 of the present embodiment exists outside the window portion 30 in the groove 14 formed on the inner peripheral surface side of the bottom portion of the tubular body 10. It is arranged so as not to come into direct contact with gas, water, and / or oil (including oil mist). Therefore, the sealing material 72 is less susceptible to the influence of gas, water, and / or oil (including oil mist) existing on the outside of the window portion 30, so that the reliability and stability of the sealing material 72 are improved, and by extension, the sealing material 72 is improved. , Can contribute to the improvement of the liquidtightness of the tubular body 10.

Further, in the present embodiment, as shown in FIGS. 2, 3A, and 3B, the detection unit 90 has the convex portion 92 included in the detection unit 90 fitted into the concave portion 44 provided in the insulating material 40. , It is fixed to the insulating material 40 and thus the tubular body 10. The concave portion 44 and the convex portion 92 are provided at positions where the light receiving element of the detection unit 90 can appropriately receive electromagnetic waves. As a result, since the detection unit 90 is supported with high accuracy in a state of being fitted by the recess 44 of the insulating material 40 fixed to the inside of the tubular body 10, the detection unit 90 is electrically attached to the tubular body 10. It is possible to appropriately receive electromagnetic waves in a state where they are arranged so as not to be connected, and the stability and reliability of detection by the detection unit 90 can be improved.

By the way, in the present embodiment, in addition to the light receiving side surface (bottom surface) of the detection unit 90 in the tubular body 10, the detection unit 90 and the tubular body 10 are electrically connected to the side surface side of the tubular body 10. A tubular insulating material 40a is arranged along the inner peripheral surface of the tubular body 10 so as not to be connected to the tubular body 10. It is a preferable aspect that the tubular insulating material 40a does not cause movements such as separation or approach to the inner peripheral surface of the tubular body 10 from the viewpoint of enhancing the stability or reliability of the detector 100. Is. As described above, in the present embodiment, since the detection unit 90 is fixed to the tubular body 10 with high accuracy, the effect of the present embodiment can be obtained even if the tubular insulating material 40a is not necessarily arranged. Can be played.

As the material of the insulating materials 40 and 40a, a material having rigidity is selected because it is relatively easy to apply the compression molding method or the injection molding method. For example, polyetheretherketone (PEEK), polypropylene (PP), polycarbonate (PC), polybutylene terephthalate (PBC), polyamide (PA), polyethylene (PE), polyethylene terephthalate (PET), ABS resin, polyacetylate (POM). , Polyphenylsulfone (PPSU), polysulfone (PS), polyethersulfone (PESU), polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), polyphenylene sulfide (PPS), and / or graphite or carbon. The above-mentioned material whose rigidity of each resin material is increased by using the above-mentioned material can be adopted as the material of the insulating materials 40 and 40a.

The sealing materials 72 and 74 used in the present embodiment are all molded using a material capable of achieving high airtightness against water and / or oil mist. Materials for producing typical sealing materials 72 and 74 are nitrile rubber (NBR), vinylidene fluoride (FKM), tetrafluoroethylene-purple orovinyl ether (FFKM), chloroprene rubber (CR), and acrylic rubber. (ACM, ANM), urethane rubber (PUR, U), epichlorohydrin rubber (ECO), multi-flow rubber (T).

Subsequently, a method of manufacturing the detector 100 of the present embodiment will be described.

In the present embodiment, the tubular body 10, the lid 20, and the insulating materials 40, 40a are all processed and molded by a cutting method from a raw material, a die casting method, an injection molding method, or a compression molding method. To. Further, the window portion 30 is manufactured by using a known method so as to allow at least one of electromagnetic waves having wavelengths of infrared (IR), visible light, and / or ultraviolet (UV) to pass through. For example, when the above-mentioned infrared-transmissive sapphire glass is adopted, the window portion 30 is manufactured by a known EFG (Edge-defined Film-fed Growth Method) method.

Next, the usage mode of the detector 100 of this embodiment will be described. 4 and 5 are usage phase diagrams as an example of the detector 100 in this embodiment.

As shown in FIGS. 4 and 5, the orientation of the window 30 in various devices or devices, or compartments or isolated spaces (rooms, etc.) in which the detector 100 is installed to exert its function. In other words, it is configured so that the light receiving element can freely change the direction in which it can be detected with high accuracy.

Specifically, the convex portion 84a having a through hole provided in the band-shaped support member 84 provided along the outer peripheral surface of the tubular body 10 is rotatably supported with respect to the plate member 86 via the spacer 85. The first pivot tool 88 is attached to the detector 100. Further, in this example, the plate member 86 is attached to a second pivot tool (not shown) that is rotatable with respect to a rotation axis orthogonal to the rotation axis by the pivot support 88 using the built-in screw 87.

Further, other usage modes of the detector 100 of this embodiment will be described. FIG. 6 is a schematic view of a machine tool 900 provided with a detector 100.

As shown in FIG. 6, the machine tool 900 has an electromagnetic wave having a wavelength of infrared (IR), visible light, and / or ultraviolet (UV) when a light emitting source is generated in the processing chamber 910 due to a fire or some other reason. The detector 100 of the present embodiment is provided to detect at least one. Further, in this example, a temperature sensor 920 for detecting the temperature is installed in the processing chamber 910. When the machine tool 900 senses ignition or sudden temperature rise by the above-mentioned plurality of means, a control unit (not shown) is used to extinguish the fire or prevent it in advance through a processing chamber 910 from the fire extinguishing agent storage container 930 via the nozzle 940. It is configured to release a fire extinguishing agent inside. Further, in this example, when a fire or a sudden temperature rise is detected in the processing chamber 910, the inflow of gas is blocked, and if a fire occurs, a damper 950 for preventing the spread of the fire is provided. It is provided. In addition, in this example, an oil mist collector 960 for exhausting gas is arranged.

Here, in a typical example of the machine tool 900 provided with a processing chamber 910 in which at least the tubular body 10 (and the window portion 30) is exposed to a gas or liquid containing oil mist, the detector 100 of the present embodiment. Liquid tightness can be particularly exhibited. The "gas containing oil mist" in the present embodiment means that the density of the oil mist in the space in the treatment chamber 910 is more than 0 g / cm ³ (more narrowly, 0.5 g / cm ³ or more). Means that.

<Second embodiment>
FIG. 7 is a partial side sectional view of the detector 200 in the present embodiment corresponding to FIG. 3A.

The detector 200 of the present embodiment has the same configuration as the detector 100 of the first embodiment except for the following (2a) to (2b). Therefore, the description overlapping with the first or second embodiment is omitted.
(2a) Instead of the tubular insulating material 40a of the detector 100 of the first embodiment, a resin material 60 that fills the voids in the tubular body 10 is introduced. (2b) In the first embodiment The point that the fixing tool 52 for fixing the insulating material 40 and the tubular body 10 and the fixing tool 54 for fixing the detection unit 90 and the insulating material 40 are not provided.

As shown in FIG. 7, in the detector 200, the detection unit 90 is fixed in the tubular body 10 by the surrounding resin material 60. In the present embodiment, since the above-mentioned fixtures are not used, the insulating material 40 and the bottom portion 94 of the detection portion are not formed with through holes or non-through holes.

The type of resin material 60 of the present embodiment is such that the detection unit 90 in the tubular body 10 maintains the insulating property between the detection unit 90 and its surroundings (typically, the tubular body 10). The material is not limited as long as it can be made into a state in which free movement (swaying, etc.) can be restricted. For example, a known photocurable resin (typically, an ultraviolet curable resin) as an example of a sealing material 72, a window portion 30, an insulating material 40, a detection portion 90, and a resin material 60 is placed in a tubular body 10. It is a preferred embodiment to cure the resin material (for example, epoxy resin) 60 by irradiating the resin material (for example, epoxy resin) 60 after the arrangement.

As described above, even when each configuration of the present embodiment is adopted, the same effect as that of the first embodiment can be achieved.

<Third embodiment>
FIG. 8 is a partial side sectional view of the detector 300 in the present embodiment corresponding to FIG. 3A.

The detector 300 of the present embodiment has the same configuration as the detector 100 of the first embodiment except for the following (3a) to (3c). Therefore, the description overlapping with the first or second embodiment is omitted.
(3a) Instead of the tubular insulating material 40a of the detector 100 of the first embodiment, a film or layer of a resin material 260 formed along the inner peripheral surface of the tubular body 10 (hereinafter collectively referred to as). The point where (referred to as "membrane") was introduced (3b) The point where a ring-shaped insulating material 40b was introduced instead of the insulating material 40 of the first embodiment (3c) The fixture 52 and fixing of the first embodiment Instead of the tool 54, it is made of resin and penetrates the bottom 94 of the detection unit 90 and the film of the resin material 260, and fixes the detection unit 90 and the tubular body 10 by using the non-penetrating hole 18 of the tubular body 10. The point where the insulating fixture 354 was introduced

As shown in FIG. 8, the detector 300 includes a film of resin material 260 formed along the inner peripheral surface of the tubular body 10. Further, since the ring-shaped insulating material 40b and the fixture 354 are both insulating, the insulating property between the detection unit 90 of the present embodiment and its surroundings (typically, the tubular body 10) is maintained. .. Further, the material of the resin material 260 is not limited as long as it is an insulating material that can be solidified so as to be fixed to the inner peripheral surface of the tubular body 10. An example of the material of the resin material 260 is a known photocurable resin (typically, an ultraviolet curable resin). In addition, the material of the insulating fixture 354 is not limited as long as it has rigidity and insulating properties that can function as a fixture. Examples of the material of the fixture 354 are the same as the materials of the insulating materials 40 and 40a.

Further, in the present embodiment, the ring-shaped insulating material 40b is arranged so as to fill the space between the detection unit 90 and the end portion of the window portion 30, and the bottom surface of the insulating material 40b forms the end portion of the window portion 30. Since it is pressed, it is more accurate and can maintain a high degree of liquidtightness with respect to the opening 12 using the sealing material 72. Even if the pressure of gas, water, and / or oil (including oil mist) existing on the outside of the window portion 30 becomes high and a force is applied to separate the sealing material 72 and the window portion 30. The pressing of the end portion of the window portion 30 by the bottom surface of the ring-shaped insulating material 40b can contribute to the maintenance of liquidtightness.

As the material of the ring-shaped insulating material 40b and the fixture 354 of the present embodiment, the same material as the material of the insulating materials 40 and 40a of the first embodiment can be adopted.

As described above, even when each configuration of the present embodiment is adopted, the same effect as that of the first embodiment can be achieved.

<Fourth Embodiment>
FIG. 9 is a partial side sectional view of the detector 400 in the present embodiment corresponding to FIG. 3A.

The detector 400 of the present embodiment has the same configuration as the detector 100 of the first embodiment except for the following (4a) to (4c). Therefore, the description overlapping with the first to third embodiments is omitted.
(4a) Instead of the tubular insulating material 40a of the detector 100 of the first embodiment, a film or layer of an insulating resin material 360 formed along the outer peripheral surface of the detection unit 90 (hereinafter collectively referred to as). (4b) A ring-shaped insulating material 40b was introduced instead of the insulating material 40 of the first embodiment. (4c) The fixture 52 and the fixture 52 of the first embodiment were introduced. Instead of the fixture 54, it is made of resin that penetrates the bottom 94 of the detection unit 90 and the film of the resin material 360 and fixes the detection unit 90 and the tubular body 10 by using the non-penetrating hole 18 of the tubular body 10. And the point that the insulating fixture 354 was introduced

As shown in FIG. 9, the detector 400 includes a film of an insulating resin material 360 formed along the outer peripheral surface of the detection unit 90. Further, since the ring-shaped insulating material 40b and the fixture 354 are both insulating, the insulating property between the detection unit 90 of the present embodiment and its surroundings (typically, the tubular body 10) is maintained. ..

Further, in the present embodiment, the ring-shaped insulating material 40b is arranged so as to fill the space between the detection unit 90 and the end portion of the window portion 30, and the bottom surface of the insulating material 40b forms the end portion of the window portion 30. Since it is pressed, it is more accurate and can maintain a high degree of liquidtightness with respect to the opening 12 using the sealing material 72. Even if the pressure of gas, water, and / or oil (including oil mist) existing on the outside of the window portion 30 becomes high and a force is applied to separate the sealing material 72 and the window portion 30. The pressing of the end portion of the window portion 30 by the bottom surface of the ring-shaped insulating material 40b can contribute to the maintenance of liquidtightness.

As the material of the resin material 360 of the present embodiment, the same material as the resin material 260 of the third embodiment can be adopted.

As described above, even when each configuration of the present embodiment is adopted, the same effect as that of the first embodiment can be achieved. As one of the modifications of the present embodiment, instead of introducing the film of the insulating resin material 360, the conductor portion of the container (shield case) that bears the outer circumference of the detection unit 90 is peeled off. Therefore, even when the structure in which the non-conductor layer inside the detection unit 90 appears on the outermost surface is adopted, the same effect as that of the first embodiment can be obtained.

<Fifth Embodiment>
FIG. 10 is a partial side sectional view of the detector 500 according to the present embodiment corresponding to FIG. 3A.

The detector 500 of the present embodiment has the same configuration as the detector 100 of the first embodiment except for the following (5a) to (5d). Therefore, the description overlapping with the first to fourth embodiments is omitted.
(5a) Instead of the tubular body 10 of the detector 100 of the first embodiment, it has the same shape as the tubular body 10, and has a metal layer (including a plating layer) on the outer peripheral surface. A point in which a tubular body 510 made of resin having 550 (referred to as "metal layer") was introduced. (5b) A point in which the insulating materials 40 and 40a of the first embodiment were not used.
(5c) A point at which the detection unit 590 having a convex portion 596 capable of pressing the end portion of the window portion 30 to realize a high degree of liquidtightness with respect to the opening 512 was introduced. (5d) Fixation of the first embodiment Instead of the tool 52 and the fixture 54, a fixture 54 for fixing the detection unit 590 and the tubular body 510 by using the bottom 594 of the detection unit 590 and the non-through hole 518 of the tubular body 510 was introduced.

As shown in FIG. 10, the detector 500 includes a detection unit 590 in the internal space 516 of the tubular body 510. The detection unit 590 is the same as the detection unit 90 except that the convex portion 596 is provided instead of the convex portion 92 of the first embodiment. Further, the tubular body 510 is provided with an opening 512 so that the detection unit 590 can detect at least one wavelength of the electromagnetic wave, similarly to the tubular body 10 of the first embodiment. Further, the window portion 30 closes the opening 512 in a liquid-tight manner through the sealing material 72 in the groove 514 provided in the tubular body 510.

As the material of the tubular body 510 of the present embodiment, a material having insulating properties and rigidity is selected because it is relatively easy to apply the compression molding method or the injection molding method. The material of the typical tubular body 510 is the same as that of the insulating materials 40, 40a of the first embodiment.

Further, in the present embodiment, the metal layer 550 is provided along the outer peripheral surface of the tubular body 510. The metal layer 550 on the outer peripheral surface of the tubular body 510 can be formed by using a known method (evaporation method, plating method, etc.).

The material of the metal layer 550 is a liquid-tight metal material. Examples of the material of the metal layer 550 are aluminum, iron, steel, brass, and / or titanium. Further, the metal material constituting the metal layer 550 is not limited to one type of metal, and a plurality of types of metal materials may be adopted. For example, when forming the plating layer, the metal layer 550 can be formed by adsorbing palladium on the surface of the tubular body 510 and then using an electroless plating method.

In addition, the detection unit 590 and the tubular body 510 are fixed by the fixture 54 by utilizing the bottom portion 594 of the detection unit 590 and the non-through hole 518 of the tubular body 510. In the present embodiment, since the material of the tubular body 510 is a resin having an insulating property, the material for manufacturing the fixture 54 is applied to the fixture 54 regardless of whether it is conductive or insulating. be able to. As a result, it is possible to realize a sealed structure in which the entire outer circumference of the detector 500 is highly accurate and the liquidtightness is particularly improved, while maintaining the insulation between the detection unit 590 and its surroundings.

In this embodiment as well, as in the first embodiment, the detector 500 uses the IEC (International Electrotechnical Commission) standards (IEC144, IEC529 and DIN40).
It can exhibit liquidtightness that satisfies at least IPX7 in the grade of "protection against water ingress" based on 05). Similarly to the first embodiment, the detector 500 of the present embodiment can exhibit a liquidtightness exceeding IPX7 depending on the conditions of the material to be used.

Further, in the present embodiment, as shown in FIG. 10, a concave portion matching the outer shape of the convex portion 596 of the detection portion 90 that can realize a high degree of liquidtightness with respect to the opening 12 by pressing the end portion of the window portion 30. Is provided in the tubular body 510. As a result, since the detection unit 590 is fixed with high accuracy in a state of being fitted by the concave portion of the tubular body 510, the electromagnetic wave is appropriately applied in a state where the detection unit 590 is arranged so as not to be electrically connected to the metal layer 550. The stability and reliability of detection by the detection unit 590 can be improved.

As described above, even when each configuration of the present embodiment is adopted, the same effect as that of the first embodiment can be achieved.

<Sixth Embodiment>
FIG. 11 is a partial side sectional view of the detector 600 in the present embodiment corresponding to FIG. 3A.

The detector 600 of the present embodiment has the same configuration as the detector 100 of the first embodiment except for the following (6a) to (6d). Therefore, the description overlapping with the first to fifth embodiments is omitted.
(6a) Instead of the tubular body 10 of the detector 100 of the first embodiment, ABS resin, polypropylene (PP), polycarbonate (PC), polyethylene (PE), polysulfone having the same shape as the tubular body 10 (PS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polyacetylate (POM), polymethylmethacrylate (PMMA), modified polyphenylene ether (m-PPE), ultrahigh molecular weight polyethylene (U-PE), poly From a group of ether etherketone (PEEK), polyphenylene sulfide (PPS), polyphenylsulfone (PPSU), polysulfone (PSU), polyethersulfone (PESU) and a mixture of the above resins and glass fiber (GF). The point where the tubular body 610 composed of at least one selected is introduced (6b) The point where the insulating materials 40 and 40a of the first embodiment are not used.
(6c) A point at which the detection unit 590 having a convex portion 596 capable of pressing the end portion of the window portion 30 to realize a high degree of liquidtightness with respect to the opening 612 was introduced. (6d) Fixing of the first embodiment Instead of the tool 52 and the fixture 54, a fixture 54 for fixing the detection unit 590 and the tubular body 610 by using the bottom 594 of the detection unit 590 and the non-through hole 618 of the tubular body 610 was introduced.

As shown in FIG. 11, the detector 600 includes a detection unit 590 in the internal space 616 of the tubular body 610. The detection unit 590 is the same as the detection unit 90 except that the convex portion 596 is provided instead of the convex portion 92 of the first embodiment. Further, the tubular body 610 is provided with an opening 612 so that the detection unit 590 can detect at least one wavelength of the electromagnetic wave, similarly to the tubular body 10 of the first embodiment. Further, the opening 612 is liquid-tightly closed by the window portion 30 via the sealing material 72 in the groove 614 provided in the tubular body 610.

As the material of the tubular body 610 of the present embodiment, a material having insulating properties and rigidity is selected because it is relatively easy to apply the compression molding method or the injection molding method. Here, in the present embodiment, ABS resin, polypropylene (PP), polycarbonate (PC), polyethylene (PE), polysulfone (PS), polybutylene terephthalate (PBT), polyethylene terephthalate, which are particularly excellent in insulating properties and rigidity. (PET), polyacetal (POM), polymethylmethacrylate (PMMA), modified polyphenylene ether (m-PPE), ultrahigh molecular weight polyethylene (U-PE), polyetheretherketone (PEEK), polyphenylene sulfide (PPS), Employs a tubular body 510 consisting of at least one selected from the group of polyphenylsulfone (PPSU), polysulfone (PSU), polyethersulfone (PESU) and a mixture of the above resins and glass fiber (GF). Has been done. Therefore, unlike the detector 500 of the fifth embodiment, even if there is no metal layer 550 provided along the outer peripheral surface of the tubular body 510, the insulation between the detection unit 590 and its surroundings is maintained. , It is possible to realize a sealed structure with high accuracy and particularly high liquidtightness over the entire outer circumference of the detector 600.

In this embodiment as well, as in the first embodiment, the detector 600 uses the IEC (International Electrotechnical Commission) standards (IEC144, IEC529 and DIN40).
It can exhibit liquidtightness that satisfies at least IPX7 in the grade of "protection against water ingress" based on 05). Similarly to the first embodiment, the detector 500 of the present embodiment can exhibit a liquidtightness exceeding IPX7 depending on the conditions of the material to be used.

<7th Embodiment>
FIG. 12 is a partial side sectional view of the detector 700 according to the present embodiment corresponding to FIG. 3A.

The detector 700 of the present embodiment has the same configuration as the detector 100 of the first embodiment except for the following (7a) to (7c). Therefore, the description overlapping with the first to sixth embodiments is omitted.
(7a) Instead of the tubular insulating material 40a of the detector 100 of the first embodiment, a known light receiving element is contained in a container (shield case) formed of a material having at least an insulating outer peripheral surface. (7b) Instead of the insulating material 40 of the first embodiment, a ring-shaped insulating material 740b formed from the same material as the ring-shaped insulating material 40b was introduced. Point (7c) Instead of the fixture 52 and the fixture 54 of the first embodiment, the detection portion 790 and the tubular shape are penetrated through the bottom portion 94 of the detection unit 790 and the non-penetrating hole 18 of the tubular body 10 is used. Introduced a resinous and insulating fixture 754 that fixes the body 10

As shown in FIG. 12, the detector 700 includes ABS resin, polypropylene (PP), polycarbonate (PC), polyethylene (PE), polysulfone (PS), polybutylene terephthalate (polysulfone terephthalate) having at least an outer peripheral surface insulating and rigid. PBT), polyethylene terephthalate (PET), polyacetylate (POM), polymethylmethacrylate (PMMA), modified polyphenylene ether (m-PPE), ultrahigh molecular weight polyethylene (U-PE), polyetheretherketone (PEEK), polyphenylene. A container consisting of at least one selected from the group consisting of sulfide (PPS), polyphenylsulfone (PPSU), polysulfone (PSU), polyethersulfone (PESU) and a mixture of each of the above resins and glass fiber (GF). A detection unit 790 containing a known light receiving element is provided therein. Further, since the ring-shaped insulating material 740b and the fixture 754 penetrating the bottom 794 of the detection unit 790 are both insulating, the detection unit 790 of the present embodiment and its surroundings (typically, tubular) Insulation with the body 10) is maintained.

Further, in the present embodiment, the ring-shaped insulating material 740b is arranged so as to fill the space between the detection unit 790 and the end portion of the window portion 30, and the bottom surface of the insulating material 740b forms the end portion of the window portion 30. Since it is pressed, it is more accurate and can maintain a high degree of liquidtightness with respect to the opening 12 using the sealing material 72. Even if the pressure of gas, water, and / or oil (including oil mist) existing on the outside of the window portion 30 becomes high and a force is applied to separate the sealing material 72 and the window portion 30. The pressing of the end portion of the window portion 30 by the bottom surface of the ring-shaped insulating material 740b can contribute to the maintenance of liquidtightness.

In the present embodiment as well, as in the first embodiment, the detector 600 uses the IEC (International Electrotechnical Commission) standards (IEC144, IEC529 and DIN40).
It can exhibit liquidtightness that satisfies at least IPX7 in the grade of "protection against water ingress" based on 05). Similarly to the first embodiment, the detector 500 of the present embodiment can exhibit a liquidtightness exceeding IPX7 depending on the conditions of the material to be used.

<Other Embodiments>
By the way, although the ring-shaped insulating material 40b is not adopted in the fifth and sixth embodiments, in the fifth or sixth embodiment, instead of the detection unit 590 including the convex portion 596, the window portion 30 It is also an aspect that can be adopted by introducing a ring-shaped insulating material 40b that can realize a high degree of liquidtightness of the openings 512 and 612 by pressing the end portion. Further, instead of the ring-shaped insulating material 40b adopted in the third, fourth, or seventh embodiment, the detection unit 90 may play the role of the convex portion 596 of the fifth or sixth embodiment. Providing a convex portion is also an aspect that can be adopted.

Further, in the fifth embodiment, a resin tubular body 510 having a metal layer (including a plating layer) 550 on the outer peripheral surface is adopted, but the fifth embodiment has such an embodiment. Not limited. For example, instead of the metal layer 550 and the tubular body 510, a resin tubular body having a liquid-tight metal layer (including a plating layer) on the inner peripheral surface is adopted, or a cylinder. Even in the embodiment in which a cylinder (metal cylinder) made of a liquid-tight metal is provided along the inner peripheral surface or the outer peripheral surface of the body 510, the effect of the first or fifth embodiment is the same. The effect can be achieved. The material of the metal having liquidtightness is the same as the material of the metal layer 550 of the fifth embodiment.

As described above, the disclosure of each of the above-described embodiments is described for the purpose of explaining those embodiments, and is not described for the purpose of limiting the present invention. In addition, modifications that exist within the scope of the invention, including other combinations of each embodiment, are also within the scope of the claims.

The present invention can be widely used as a detector having excellent liquidtightness.

10,510,610 Cylindrical body 12,512,512 Opening 14,514,514 Groove 16,516,516 Cylindrical body internal space 18,518,518 Non-through hole 20 Lid 22 Through hole 30 Window 40, 40a, 40b, 740b Insulation material 42 Convex part 44 Concave part 46 Non-through hole 48 Through hole 52, 54, 354, 754 Fixture 60, 260, 360 Resin material 72, 74 Sealing material 80 Connector 84 Support member 84a Convex part 85 Spacer 87 Screw 86 Plate material 88 Pivot support 90,590,790 Detection part 92,596 Convex part 94,594,794 Bottom 98 terminal 100,200,300,400,500,600,700 Detector 550 Metal layer (metal film)
900 Machine tool 910 Processing room 920 Temperature sensor 930 Fire extinguishing agent storage container 940 Nozzle 950 Damper 960 Revolving light with sound

As the material of the tubular body 610 of the present embodiment, a material having insulating properties and rigidity is selected because it is relatively easy to apply the compression molding method or the injection molding method. Here, in the present embodiment, ABS resin, polypropylene (PP), polycarbonate (PC), polyethylene (PE), polysulfone (PS), polybutylene terephthalate (PBT), polyethylene terephthalate, which are particularly excellent in insulating properties and rigidity. (PET), polyacetal (POM), polymethylmethacrylate (PMMA), modified polyphenylene ether (m-PPE), ultrahigh molecular weight polyethylene (U-PE), polyetheretherketone (PEEK), polyphenylene sulfide (PPS), A tubular body 610 consisting of at least one selected from the group of polyphenylsulfone (PPSU), polysulfone (PSU), polyethersulfone (PESU) and a mixture of each of the above resins and glass fiber (GF) is adopted. Has been done. Therefore, unlike the detector 500 of the fifth embodiment, even if there is no metal layer 550 provided along the outer peripheral surface of the tubular body 510, the insulation between the detection unit 590 and its surroundings is maintained. , It is possible to realize a sealed structure with high accuracy and particularly high liquidtightness over the entire outer circumference of the detector 600.

Claims (9)

A liquid-tight tubular body made of metal having a bottom having an opening in part and accommodating a detection unit that detects at least one wavelength of an electromagnetic wave using the opening.
A window portion that allows the wavelength to pass through, which closes the opening liquid-tightly via a sealing material,
An insulating material arranged at least on the outer periphery of the tubular body or an insulating material arranged between the tubular body and the detection unit so that the detection unit is not electrically connected to the tubular body. With,
Detector. ABS resin, polypropylene (PP), polypropylene (PC), polyethylene (PE), polysulfone, which has a bottom with a partial opening and houses a detector that uses the opening to detect at least one wavelength of electromagnetic waves. (PS), polybutylene terephthalate (PBT), polyacetal (POM), polymethylmethacrylate (PMMA), modified polyphenylene ether (m-PPE), ultrahigh molecular weight polyethylene (U-PE), polyetheretherketone (PEEK). , Polyphenylene terephide (PPS), polyphenylsulfone (PPSU), polysulfone (PSU), polyethersulfone (PESU) and at least one selected from the group of mixtures of the above resins and glass fiber (GF). Cylindrical body and
A window portion for passing the wavelength, which closes the opening liquid-tightly through a sealing material, is provided.
Detector. A tubular body made of a resin having a bottom portion having an opening and accommodating a detection unit that detects at least one wavelength of an electromagnetic wave using the opening.
A window portion that allows the wavelength to pass through, which closes the opening liquid-tightly via a sealing material,
A liquid-tight metal layer or a metal cylinder provided along the outer peripheral surface of the tubular body is provided.
The detection unit is arranged so as not to be electrically connected to the metal layer or the metal cylinder.
Detector. A fixture for fixing the detection unit to the tubular body so that the detection unit is not electrically connected to the tubular body is provided.
The detector according to claim 1. The wavelength is at least one of the wavelengths of the electromagnetic wave emitted from the flame.
The detector according to any one of claims 1 to 4. The tubular body is hermetically sealed to water and / or oil mist.
The detector according to any one of claims 1 to 5. The sealing material is arranged in a groove formed on the inner peripheral surface side of the bottom of the tubular body.
The detector according to any one of claims 1 to 6. The detector according to any one of claims 1 to 7.
Machine Tools. A processing chamber in which at least the tubular body of the detector according to any one of claims 1 to 7 is exposed to a gas or liquid containing an oil mist.
Machine Tools.