CN112311375A - Structure for improving insulating property of proximity switch - Google Patents
Structure for improving insulating property of proximity switch Download PDFInfo
- Publication number
- CN112311375A CN112311375A CN202011482672.2A CN202011482672A CN112311375A CN 112311375 A CN112311375 A CN 112311375A CN 202011482672 A CN202011482672 A CN 202011482672A CN 112311375 A CN112311375 A CN 112311375A
- Authority
- CN
- China
- Prior art keywords
- proximity switch
- improving
- inductance coil
- magnetic tank
- insulation performance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9502—Measures for increasing reliability
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9505—Constructional details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/9517—Proximity switches using a magnetic detector using galvanomagnetic devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K2017/9455—Proximity switches constructional details
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/945—Proximity switches
- H03K17/95—Proximity switches using a magnetic detector
- H03K17/952—Proximity switches using a magnetic detector using inductive coils
- H03K2017/9527—Details of coils in the emitter or receiver; Magnetic detector comprising emitting and receiving coils
Landscapes
- Switches That Are Operated By Magnetic Or Electric Fields (AREA)
Abstract
The invention discloses a structure for improving the insulating property of a proximity switch, which comprises an inductance coil and a magnetic tank, wherein the magnetic tank is provided with an annular groove matched with the inductance coil, the inner surface of the annular groove is sprayed with an insulating layer, and the magnetic tank is provided with a threading hole. The invention ensures the insulation between the inductance coil and the magnetic tank, thereby improving the insulation performance of the proximity switch.
Description
Technical Field
The invention belongs to the technical field of proximity switches, and particularly relates to a structure for improving the insulating property of a proximity switch.
Background
With the rapid development of the industry, proximity switches are widely used in aircraft landing gear, brakes, hatch, pitch, APU, flaps, empennage, and engine thrust reversals. The proximity switch seals a group of winding coils and a matched inductance detection and processing circuit component in a full metal shell, when a periodic pulse signal is applied to a built-in coil of a proximity switch probe, the coil emits a magnetic field outwards, a metal target moves relative to the probe, and the magnetic circuit and the magnetic resistance of the magnetic field are influenced in the process. When the metal target approaches or the projection area of the probe induction end face and the metal target end face is increased, the magnetic resistance of the magnetic circuit is reduced, and the inductance of the coil in the probe is increased; when the metal target is far away from or the projection area of the probe induction end face and the metal target end face is reduced, the magnetic circuit reluctance is increased, and the coil inductance in the probe is reduced. The detection circuit identifies the position state of the target by detecting the change of the inductance value, and indicates the approaching state and the departing state of the target by discrete switching value signals. For the proximity switch, the insulativity of the product is damaged, the inductance value of an inductance coil matched with the product is reduced, the product cannot accurately detect the target position, the product can be guided to report by mistake in severe cases, and the safety of the airplane is influenced, so the insulativity of the proximity switch is extremely important.
Disclosure of Invention
In order to solve the technical problem, the invention provides a structure for improving the insulation performance of a proximity switch, which ensures the insulation between an inductance coil and a magnetic tank, thereby improving the insulation performance of the proximity switch.
The invention is realized by the following technical scheme:
the utility model provides an improve proximity switch insulating properties's structure, includes inductance coils and magnetism jar, the magnetism jar be provided with inductance coils complex ring channel, ring channel internal surface spraying insulating layer, the magnetism jar is provided with the through wires hole.
Furthermore, the insulating layer sprayed on the inner surface of the annular groove is made of polytetrafluoroethylene.
Further, a polytetrafluoroethylene film is wrapped outside the enameled wire.
Further, the magnetic tank is provided with a lead slot matched with the enameled wire led out from the inductance coil.
Furthermore, when the inductance coil is arranged in the annular groove of the magnetic tank, the upper surface of the inductance coil is lower than the upper surface of the magnetic tank.
The invention has the beneficial effects that:
the invention provides a structure for improving the insulation performance of a proximity switch, which ensures the insulation between an inductance coil and a magnetic tank, thereby improving the insulation performance of the proximity switch.
Drawings
FIG. 1 is a two-dimensional block diagram of the present invention;
in the figure: 1-an inductance coil, 2-an enameled wire, 3-a threading hole, 4-a threading slot and 5-a magnetic tank.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1, the structure for improving the insulation performance of the proximity switch comprises an inductance coil 1 and a magnetic tank 5, wherein the magnetic tank 5 is provided with an annular groove matched with the inductance coil 1, and in order to ensure reliable insulation between the inductance coil 1 and the magnetic tank 5, polytetrafluoroethylene is sprayed on the inner surface of the annular groove to form an insulation layer; the magnetic tank 5 is provided with a threading hole 3. In order to ensure that the enameled wire 2 led out from the inductance coil 1 is not damaged when passing through the threading hole, a polytetrafluoroethylene film is wrapped outside the enameled wire 2 for protection.
In order to ensure that the enameled wire 2 led out from the inductance coil 1 is not damaged by pressure after assembly, the magnetic tank 5 is provided with a lead groove 4 matched with the enameled wire 2 led out from the inductance coil 1 to protect the enameled wire 2. In order to ensure that the inductance coil 1 is not extruded after being assembled, the inductance coil 1 is arranged in the annular groove of the magnetic tank 5, and the upper surface of the inductance coil is lower than the upper surface of the magnetic tank 5.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides an improve proximity switch insulating properties's structure, its characterized in that includes inductance coils (1) and magnetism jar (5), magnetism jar (5) be provided with inductance coils (1) complex ring channel, ring channel internal surface spraying insulating layer, magnetism jar (5) are provided with through wires hole (3).
2. The structure for improving the insulation performance of a proximity switch as recited in claim 1, wherein the insulation layer coated on the inner surface of the annular groove is polytetrafluoroethylene.
3. The structure for improving the insulation performance of the proximity switch according to claim 2, wherein the enameled wire (2) is externally wrapped with a polytetrafluoroethylene film.
4. A structure for improving the insulation performance of a proximity switch according to claim 3, characterized in that the magnetic tank (5) is provided with a lead slot (4) adapted to the enameled wire (2) led out from the inductance coil (1).
5. The structure for improving the insulation performance of the proximity switch as claimed in claim 4, wherein the upper surface of the inductance coil (1) is lower than the upper surface of the magnetic tank (5) when the inductance coil is arranged in the annular groove of the magnetic tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011482672.2A CN112311375A (en) | 2020-12-16 | 2020-12-16 | Structure for improving insulating property of proximity switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011482672.2A CN112311375A (en) | 2020-12-16 | 2020-12-16 | Structure for improving insulating property of proximity switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112311375A true CN112311375A (en) | 2021-02-02 |
Family
ID=74487176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011482672.2A Pending CN112311375A (en) | 2020-12-16 | 2020-12-16 | Structure for improving insulating property of proximity switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112311375A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4123905A3 (en) * | 2021-07-22 | 2023-05-03 | GE Aviation Systems LLC | Passive inductive proximity sensor array signal processing circuit |
-
2020
- 2020-12-16 CN CN202011482672.2A patent/CN112311375A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4123905A3 (en) * | 2021-07-22 | 2023-05-03 | GE Aviation Systems LLC | Passive inductive proximity sensor array signal processing circuit |
| US11822035B2 (en) | 2021-07-22 | 2023-11-21 | Ge Aviation Systems Llc | Passive inductive proximity sensor array signal processing circuit |
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