JP2016223786A - Plug body used in environmental test device and environmental test device using the plug body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce influence of electrical noise on wirings from other wirings when a plurality of wirings are provided to extend from the inside to the outside of a test tank.SOLUTION: A plug body 10 includes three cuttings 13a to 13c fitted in through-holes in the environmental test device and capable of receiving insertion of wirings. The deeper the cuttings 13a to 13c become in the direction in which the wirings are inserted, the distance between adjacent ones of the cuttings 13a to 13c becomes large.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a plug used in an environmental test apparatus for performing an environmental test on a test object, and an environmental test apparatus using the plug.

  As shown in Patent Document 1, an environmental test apparatus has a test tank in which a test object is arranged, and changes the environment inside the test tank to perform an environmental test on the test object. An apparatus configured as described above is known. Moreover, in the environmental test apparatus of patent document 1, the through-hole is formed in the test tank and the plug body is engage | inserted by a through-hole. The plug is formed with one cut into which a wiring extending from the inside of the test chamber to the outside can be inserted.

Japanese Patent Laying-Open No. 2015-64223

  When a plurality of wires are provided to extend from the inside of the test tank to the outside, when a plurality of wires are inserted into the one cut in the plug body in which one cut is formed as in Patent Document 1, There may be a problem that the wiring is affected by electrical noise from other wiring.

  The object of the present invention is to suppress the problem that each wiring is affected by electrical noise from other wiring when a plurality of wirings are provided extending from the inside of the test tank to the outside. It is an object to provide a plug used in an environmental test apparatus and an environmental test apparatus using the plug.

  According to a first aspect of the present invention, in the plug used in the environmental test apparatus, the environmental test apparatus is a test tank in which an object to be tested is disposed, and communicates the inside and the outside of the test tank. A test tank in which a through-hole to be formed is formed, and an environment inside the test tank is changed to perform an environmental test on the DUT, and the plug body is formed in the through-hole. A plurality of cuts, each of which is formed of an elastic member to be inserted and into which a plurality of wires extending from the inside of the test tank to the outside can be inserted, respectively, are directed to the downstream side of the wiring insertion direction. Accordingly, a plug body is provided which is formed so as to be separated from other adjacent notches.

  According to a second aspect of the present invention, there is a test tank in which a DUT is arranged, a test tank in which a through hole for communicating the inside and the outside of the test tank is formed, and fitted into the through hole An environmental test apparatus comprising: the plug according to the first aspect, wherein the environmental test apparatus is configured to perform an environmental test on the DUT by changing an environment inside the test tank. Provided.

  According to the said 1st and 2nd viewpoint, a some wiring can be isolate | separated and hold | maintained at a plug body by inserting a wiring in the some notch formed in the plug body. In addition, since each of the plurality of cuts is formed so as to be separated from other adjacent cuts toward the downstream side in the wiring insertion direction, each wiring is adjacent to each other as it is deeply inserted into the cut. It will be separated from the wiring. Thereby, the problem that each wiring receives the influence of the electrical noise from another wiring can be suppressed.

  In the plug according to the first aspect, a conductive sheet may be provided in at least one of the plurality of cuts.

  According to the said structure, the propagation of noise from the wiring inserted into the notch provided with the electroconductive sheet and to the said wiring can be suppressed.

  In the plug according to the first aspect, the plurality of cuts may include a first cut provided with the conductive sheet, and a second cut and a third cut facing each other with the first cut interposed therebetween.

  According to the above configuration, it is possible to suppress the propagation of noise between the wirings inserted in the second cut and the third cut.

  The plug according to the first aspect has a cross section perpendicular to the direction from the inside to the outside of the test tank, wherein the first cut is formed along a center line of the plug, and the second cut and The third cut may be in a symmetrical positional relationship with respect to the center line.

  According to the above configuration, the wiring can be held in a balanced manner by the first to third cuts, and as a result, the problem of noise in each wiring can be more reliably suppressed.

  The plug according to the first aspect may be made of low foaming silicon rubber or solid silicon rubber.

  According to the present invention, a plurality of wires can be separated and held by the plug by inserting the wires into the plurality of cuts formed in the plug. In addition, since each of the plurality of cuts is formed so as to be separated from other adjacent cuts toward the downstream side in the wiring insertion direction, each wiring is adjacent to each other as it is deeply inserted into the cut. It will be separated from the wiring. Thereby, the problem that each wiring receives the influence of the electrical noise from another wiring can be suppressed.

(A) is a perspective view which shows the state by which the door was closed in the environmental test apparatus which concerns on one Embodiment of this invention. (B) is a perspective view which shows the state by which the door was open | released in the environmental test apparatus which concerns on one Embodiment of this invention. In the environmental test apparatus which concerns on one Embodiment of this invention, it is a fragmentary sectional view which shows the state by which the plug body was inserted by the through-hole. It is a perspective view which shows the stopper which concerns on one Embodiment of this invention. It is the figure seen from the IV direction of FIG.

  As shown in FIGS. 1 (a) and 1 (b), an environmental test apparatus 1 according to an embodiment of the present invention includes a test tank 3 in which an object to be tested is arranged in an interior 3a, a cooler, a heater, and a humidifier. A device, a blower, and the like (not shown; hereinafter referred to as “cooler and the like”). The environmental test apparatus 1 is configured to control the cooler and the like, and to change the environment of the inside 3a of the test tank 3 to perform an environmental test on the DUT. The environmental test apparatus 1 is used for inspecting the performance of parts and materials in the fields of electric and electronics, automobiles, material engineering, and the like.

  The test tank 3 is comprised with the heat insulation material etc., and the door 2 is provided in the front. The door 2 can be opened to place the device under test in the inside 3 a of the test tank 3 or taken out to the outside 3 b of the test tank 3.

  Cylindrical through holes 5 a and 5 b are formed in the side walls 4 a and 4 b of the test tank 3. Each through-hole 5a, 5b makes the inside 3a and the outside 3b of the test tank 3 communicate. Three wirings 6 (see FIG. 2) extending from the inside 3a of the test tank 3 to the outside 3b are passed through the through holes 5a and 5b. In the present embodiment, the wiring 6 includes a wiring 6a made of a power supply line and wirings 6b and 6c made of signal lines. Each wiring 6 connects, for example, a sensor installed in the inside 3 a of the test tank 3 and a measuring device installed in the outside 3 b of the test tank 3.

  A plug 10 is fitted in each of the through holes 5a and 5b. The plug 10 is made of an elastic member (low foaming silicon rubber or solid silicon rubber).

  The plug 10 is formed in accordance with the size and shape of the through holes 5a and 5b. Moreover, the plug 10 has a truncated cone shape in which the inside 3a side of the test tank 3 has the same diameter as the through holes 5a and 5b, and the diameter increases toward the outside 3b side of the test tank 3 (see FIG. 3). Thereby, the airtightness of the test tank 3 can be improved.

  Three incisions 13 into which the three wires 6 can be inserted are formed in the plug body 10. The cut 13 includes a first cut 13a into which the wiring 6a is inserted, a second cut 13b into which the wiring 6b is inserted, and a third cut 13c into which the wiring 6c is inserted.

  As shown in FIG. 4, the first cut 13 a is formed along the center line O of the plug body 10 in a cross section orthogonal to the direction from the inside 3 a to the outside 3 b of the test chamber 3. The second cut 13b and the third cut 13c are opposed to each other with the first cut 13a interposed therebetween, and are in a symmetric positional relationship with respect to the center line O. A conductive sheet 15 made of aluminum foil or the like is provided on the first cut 13a (specifically, the surface of the wall defining the first cut 13a in the plug 10). Each of the cuts 13 a to 13 c is formed so as to be separated from other adjacent cuts as it goes downstream in the insertion direction of the wiring 6.

  As described above, according to the present embodiment, by inserting the wiring 6 into the cuts 13a to 13c formed in the plug body 10, a plurality of wirings can be separated and held by the plug body. Moreover, since each notch 13a-13c is formed so that it may separate from other adjacent notches as it goes to the downstream of the insertion direction of the wiring 6, each wiring 6 is inserted deeply into the notches 13a-13c. As a result, it is separated from other adjacent wirings 6. Thereby, the problem that each wiring 6 receives the influence of the electrical noise from another wiring can be suppressed.

  The conductive sheet 15 is provided in at least one of the cuts 13a to 13c (see FIGS. 3 and 4).

  According to the said structure, propagation of noise can be suppressed from the wiring 6a inserted into the notch 13a provided with the conductive sheet 15 and to the wiring 6a.

  The cut 13 includes a first cut 13a provided with the conductive sheet 15, and a second cut 13b and a third cut 13c that are opposed to each other with the first cut 13a interposed therebetween.

  According to the said structure, propagation of the noise of wiring 6b, 6c inserted in the 2nd notch 13b and the 3rd notch 13c can be suppressed.

  In a cross section orthogonal to the direction from the inside 3a to the outside 3b of the test tank 3, the first cut 13a is formed along the center line O of the plug body 10, and the second cut 13b and the third cut 13c are The position is symmetrical with respect to the center line O.

  According to the above configuration, the wirings 6a to 6c can be held in a balanced manner by the first to third cuts 13a to 13c, and as a result, the problem of noise in the wirings 6a to 6c can be more reliably suppressed.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made as long as they are described in the claims.

-The number, position, size, shape, etc. of the through holes formed in the test tank are arbitrary. For example, one through hole may be formed in the ceiling, bottom wall, door, etc. of the test tank.
-The number of cuts formed in the plug is not particularly limited as long as it is plural, and may be two or four or more.
As long as the plug is made of an elastic member, the plug is not limited to the above-described material, and may be made of any material.
The size and shape of each cut are not particularly limited as long as each cut is formed so as to be separated from other adjacent cuts toward the downstream side in the wiring insertion direction. For example, the shape of each notch may be an arc shape or a step shape (that is, a shape having a plurality of bent portions) in a cross section orthogonal to the direction from the inside to the outside of the test chamber. .
-A conductive sheet may be provided for each cut, or a conductive sheet may be provided only for some of the plurality of cuts. Moreover, it is not necessary to provide a conductive sheet in any of the cuts.
-The kind of wiring inserted in each notch is not specifically limited.
-It is not limited to wiring being inserted in all the notches. That is, the wiring may not be inserted into a part of the cuts.

DESCRIPTION OF SYMBOLS 1 Environmental test apparatus 3 Test tank 3a Inside 3b Outside 5a, 5b Through-hole 6 Wiring 10 Plug body 13 Cut 13a 1st cut 13b 2nd cut 13c 3rd cut 15 Conductive sheet O Center line

Claims (6)

In plugs used in environmental test equipment,
The environmental test apparatus is a test tank in which a test object is arranged, and has a test tank in which a through hole for communicating the inside and the outside of the test tank is formed. It is configured to perform an environmental test of the DUT by changing the environment,
The plug is
It is composed of an elastic member fitted into the through hole,
A plurality of cuts into which a plurality of wirings extending from the inside to the outside of the test chamber can be inserted are formed so as to be separated from other adjacent cuts toward the downstream side in the wiring insertion direction. A plug body, characterized in that   The plug according to claim 1, wherein a conductive sheet is provided in at least one of the plurality of cuts.   The plurality of cuts include a first cut provided with the conductive sheet, and a second cut and a third cut facing each other with the first cut interposed therebetween. Plug body. In a cross section orthogonal to the direction from the inside of the test tank to the outside,
The first cut is formed along a center line of the plug;
The plug according to claim 3, wherein the second cut and the third cut are in a symmetrical positional relationship with respect to the center line.   The plug body according to any one of claims 1 to 4, wherein the plug body is made of silicon rubber having a low foaming rate or solid silicon rubber. A test tank in which a DUT is disposed, and a test tank in which a through hole that communicates the inside and the outside of the test tank is formed,
The stopper according to any one of claims 1 to 5 fitted in the through hole,
An environmental test apparatus configured to perform an environmental test on the DUT by changing an environment inside the test tank.

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