JP2018072140A - Environmental testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environmental testing device which can run a regular environmental test and also can run a test by combining the device and another device and allowing the devices to work together.SOLUTION: The environmental testing device includes air conditioning means 48 and a testing room 15. The air conditioning means 48 is for adjusting the temperature of the inside to a specific level. The testing room 15 has a small door 31, and the testing room 15 is covered with a heat insulating wall 32. The heat insulating wall 32 has a hole through which a part of an external force provision device 200 or a part of a testing target object 210 are to be inserted. The testing room 15 and the air conditioning means 48 lead to each other. The environmental testing device further has a shielding member 51 for temporarily blocking the passage between the testing room 15 and the air conditioning means 48.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an environmental test apparatus that forms a desired environment in a test chamber. In particular, the present invention is suitable as an environmental test apparatus used in combination with other equipment.

  An environmental test apparatus is known as an apparatus that uses products and parts such as electrical equipment as test objects and checks their performance and durability. The environmental test apparatus has a test room and can artificially create a predetermined environment such as a temperature environment (for example, high or low temperature) or a humidity environment (for example, high or low humidity) in the test room. Is.

There are a wide variety of DUTs that are subject to environmental testing. In addition, there are various contents of environmental tests, for example, there is a demand for testing basic characteristics of metal materials, rubber, and the like under a predetermined environment. For example, there is a demand to perform a test for examining basic characteristics such as a tensile test, a compression test, a shear test, a hardness test, an impact test, and a creep test in a special environment.
In some cases, the test object is irradiated with a special light beam or radio waves or magnetic force is applied in a specific environment.

  Conventionally, in order to meet the above-described requirements, a special specification environmental test apparatus has been designed and used. For example, Patent Document 1 discloses a thermostatic chamber (environment test apparatus) that performs a tensile test under a specific environment.

The environmental test apparatus disclosed in Patent Document 1 has a pair of grips in a test chamber, holds the test piece with the grips, and applies an external force to the test piece (test object) in the test chamber to perform a tensile test. Is what you do.
The environmental test apparatus disclosed in Patent Document 1 has an open / close door, and the outside and the test chamber communicate with each other by opening the open / close door.
The environmental test apparatus disclosed in Patent Document 1 includes a refrigerator, and can drive the refrigerator to create a low-temperature environment in the test chamber.

JP 2000-314692 A

The procedure for performing an environmental test using the environmental test apparatus disclosed in Patent Document 1 is as follows.
That is, the open / close door is opened with the refrigerator stopped, and the test piece is introduced into the test chamber. Then, with the open / close door open, the gripping tool in the test chamber is operated to sandwich the test piece between the pair of gripping tools.
Subsequently, the open / close door is closed, and the refrigerator and the blower that circulates air between the refrigerator and the test chamber are activated to lower the temperature in the test chamber. When the temperature in the test chamber becomes a predetermined low temperature, the state is maintained for a while.
Then, the external tensile tester is activated, and the pair of grips are moved away from each other to break the test piece.
Thereafter, the blower is stopped, the door is opened, and the broken pieces are removed. Then, a new test piece is mounted between the pair of grips, the door is closed, the blower is activated, and the temperature in the test chamber is lowered. Thereafter, this process is repeated.

According to the environmental test apparatus disclosed in Patent Document 1, the tensile strength of the material in a low temperature environment can be examined.
However, the tensile test by the environmental test apparatus disclosed in Patent Document 1 has a problem that it may take significantly more time than a normal tensile test under atmospheric release.
That is, in a tensile test of rubber, resin, etc., it is rare that there is one test piece, and in many cases, the test is sequentially performed using a large number of test pieces.
When a skilled person performs a tensile test of rubber or resin in an open state, the time required for one test is approximately 3 minutes.
On the other hand, according to the environmental test apparatus disclosed in Patent Document 1, it takes about 15 minutes even for a skilled person.

This is because it takes time for the temperature in the test chamber to become the target test environment. In the prior art, when the test piece is mounted, the blower is stopped and the door is opened, so that the test chamber is opened to the atmosphere. Then, after the test piece is mounted, the blower is started, and the environment in the test chamber is adjusted to the test environment. In the prior art, it takes time to prepare the environment in the test room, and the time required for the entire test becomes enormous.
Moreover, even if the test piece is detached and attached in a state where the blower is stopped, there is a problem that refrigerating capacity may be deteriorated due to remarkably frost on the inner wall of the tank and the evaporator due to the inflow of outside air.

  Accordingly, the present invention focuses on the above-described problems of the prior art, and an object of the present invention is to provide an environmental test apparatus that can shorten the time required for one test.

  The invention according to claim 1 for solving the above-described problem is an environmental test apparatus that performs a predetermined test in combination with an external force applying apparatus that applies an external force to a device under test. The air conditioning unit adjusts the internal air to a predetermined temperature, the test chamber has an open / close door, the test chamber is covered with an outer wall, and the outer wall has an external force applying device. Or a part thereof, a part of the test object or a part thereof, a through-hole that passes through at least one of the members that connect the external force applying device and the test object, and the test chamber and the air conditioning unit communicate with each other. An environmental test apparatus having a shielding member for temporarily shielding between the test chamber and the air conditioning unit.

In the first aspect of the present invention, the test chamber and the air conditioning unit communicate with each other. The air conditioning unit adjusts the internal air to a predetermined temperature. Air adjusted to a predetermined temperature by the air conditioning unit is supplied to the test chamber.
Since the test chamber has an open / close door, the DUT to be tested can be placed in the test chamber or taken out of the test chamber.
The test chamber is covered with an outer wall, and at least one of an external force applying device or an accessory thereof, a part of the test object or an accessory thereof, and a member connecting the external force applying device and the test object is provided on the outer wall. Since there is a through-hole to be inserted, any one of these can be arranged in the test chamber, and the portion arranged in the test chamber can be supported from outside the test chamber.
In addition, since the shielding member that temporarily shields the communication between the test chamber and the air conditioning unit is provided, the inside and outside of the air conditioning unit can be blocked by the shielding member when the open / close door of the test chamber is opened. Therefore, the air adjusted to a predetermined temperature by the air conditioning unit is difficult to mix with the outside air, and the adjusted temperature can be maintained.
That is, in the test apparatus of the present invention, the space between the air conditioning unit and the test chamber can be temporarily shielded by the shielding member. In the present invention, when the test object is taken in and out from the test room, the space between the air conditioning unit and the test room can be temporarily shielded by the shielding member. Therefore, when taking in and out the DUT from the test room, it is difficult for outside air to enter the air conditioning unit side, and condensation and frost are unlikely to occur in the air conditioning equipment (evaporator). When the test object is taken in and out from the test room, the environment in the test room is disturbed by the intrusion of outside air, but the environment on the air conditioning unit side is maintained.
Furthermore, when the shielding member is removed after closing the open / close door, the air conditioning unit and the test chamber communicate with each other, and air adjusted to a predetermined temperature by the air conditioning unit is supplied to the test chamber, so that the test environment in the test chamber is immediately prepared. The test can be started immediately.
Here, the volume of the air conditioning unit is preferably larger than the volume of the test chamber.
That is, when replacing the test object in the test chamber, the test chamber is exposed to the outside air and the test execution environment cannot be maintained. At this time, since the test chamber and the air conditioning unit are blocked by the shielding member, the air in the air conditioning unit is maintained at a predetermined temperature.
When the replacement of the DUT in the test chamber is completed, the test chamber is sealed by closing the open / close door to shut off the outside air, and the shielding member is removed to allow the test chamber to communicate with the air conditioning unit. Mix. At that time, as the volume of the air-conditioning unit is larger than the volume of the test chamber, the amount of air adjusted to a predetermined temperature increases relatively, and conversely, the amount of air exposed to the atmosphere decreases. The time until the air is adjusted to a predetermined temperature is short. Therefore, an environmental test can be performed promptly.

  The invention described in claim 2 has an air conditioning unit and a test chamber, the air conditioning unit adjusts the internal air to a predetermined temperature, the test chamber has an open / close door, and the test The chamber is covered with an outer wall, the test chamber communicates with the air conditioning unit, and has an shielding member that temporarily shields between the test chamber and the air conditioning unit.

  Also in the present invention, since there is a shielding member that temporarily shields between the communicating test chamber and the air conditioning unit, the inside and outside of the air conditioning unit can be blocked by the shielding member when the opening / closing door of the test chamber is opened. is there. Therefore, the air that has been adjusted to a predetermined temperature by the air conditioning unit is less likely to be mixed with the outside air, and the adjusted temperature can be maintained.

  In the invention according to claim 3, the air-conditioning unit has an air-conditioning ventilation path including an air-conditioning device and an air chamber, and air circulates between the air-conditioning ventilation path and the air chamber. The environmental test apparatus according to claim 1, wherein a duct for guiding air to the test chamber side is provided in the air chamber.

In the invention according to claim 3, since the air conditioning unit has an air conditioning ventilation path including an air conditioning device and an air chamber, and air circulates between the air conditioning ventilation path and the air chamber. Is supplied with air adjusted to a predetermined temperature by the air conditioning unit.
Further, since the air chamber is provided with a duct for guiding air to the test chamber side, the air adjusted to a predetermined temperature by the air conditioning unit easily flows to the test chamber side through the duct. In other words, the test execution environment in the test room is quickly prepared.

  The environmental test according to any one of claims 1 to 3, wherein an air conditioning unit side rectifying member is provided in the vicinity of the shielding member and on the air conditioning unit side. Device.

  Here, the rectifying member is a member that acclimates the turbulent wind discharged from the blower into a laminar flow state. In the invention according to claim 4, since the air conditioning unit side rectifying member is provided in the vicinity of the shielding member and on the air conditioning unit side, the air adjusted to a predetermined temperature by the air conditioning unit is in a laminar flow state. To the vicinity of the shielding member.

  The invention according to claim 5 is the environmental test according to any one of claims 1 to 4, wherein a test chamber side rectifying member is provided in the vicinity of the shielding member and on the test chamber side. Device.

In the invention according to claim 5, since the test chamber side rectifying member is provided in the vicinity of the shielding member and on the test chamber side, the air adjusted to a predetermined temperature by the air conditioning unit is in a laminar flow state. To the vicinity of the DUT.
As a result, the air blows against the DUT is stabilized.

  In the invention according to claim 6, the air conditioning unit includes an air conditioning ventilation path in which air conditioning equipment is built in and an air chamber, and air circulates between the air conditioning ventilation path and the air chamber, A duct that collects the air blown from the air blowing portion of the air conditioning ventilation path and guides it to the test chamber side, an air conditioning unit side rectifying member, a test chamber side rectifying member, an air conditioning unit side rectifying member, and a test chamber side 6. The environmental test apparatus according to claim 1, wherein the rectifying member is disposed at a position facing the rectifying member with the shielding member interposed therebetween.

In the invention according to claim 6, the air conditioning unit has an air conditioning ventilation path including an air conditioning device and an air chamber, and air circulates between the air conditioning ventilation path and the air chamber. In the air, air adjusted to a predetermined temperature by the air conditioning unit is circulated.
Moreover, since the air blown from the air blowing portion of the air conditioning ventilation path is collected and guided to the test chamber side, the air adjusted to a predetermined temperature by the air conditioning portion is easily moved to the test chamber side by the duct.
Furthermore, since the air conditioning unit-side rectifying member and the test chamber-side rectifying member are arranged so as to face each other with the shielding member interposed therebetween, the air adjusted to a predetermined temperature by the air conditioning unit has a gap where the shielding member is arranged. It is easy to move from the air conditioning unit side rectifying member to the test chamber side rectifying member. Therefore, the test environment in the laboratory is quickly prepared by the air.
That is, a shielding member is disposed between the air conditioning unit and the test room. On the other hand, since the DUT is on the test room side and is located outside the shielding member, there is a shielding member between the air conditioning unit and the DUT, and shields a continuous duct from the air conditioning unit. It cannot be installed across the part of the member, and the duct outlet cannot be brought close to the DUT directly. Therefore, a duct etc. are parted and it will arrange | position on both sides of a shielding member.
Here, in this invention, the air-conditioning part side rectification member and the test room side rectification member are arrange | positioned in the position which opposes on both sides of a shielding member.
Paying attention to the air conditioning unit side, the air supplied from the air conditioning unit is adjusted to a laminar flow state by the air conditioning unit side rectifying member and blown to the test chamber side. Therefore, the air discharged from the air conditioning unit side rectifying member is in a state where it is difficult to diffuse.
There is a test room side rectification member at a position facing the air conditioning unit side rectification member. Therefore, the test room side rectification member accepts the air that is in a laminar flow discharged from the air conditioning unit side rectification member and is difficult to diffuse, and can be sent to the DUT side.
The air adjusted to a predetermined temperature in the air conditioning unit in this way travels across the space occupied by the shielding member from the air conditioning unit side rectifying member side to the test chamber side rectifying member side, and enters the test chamber via both rectifying members. Led. Therefore, the test environment in the test room is quickly prepared. In addition, if there is a test object downstream of the test chamber side rectifying member, the air adjusted to a predetermined temperature is guided to the test object, and the test object is exposed to the air, and a test near the test object is performed. The environment is set up quickly.

  According to the seventh aspect of the present invention, the test chamber has a window through which the inside can be viewed, and the window has a multiple structure in which a plurality of transparent plates are provided, and a dry gas is introduced between the transparent plates. The environmental test apparatus according to claim 1, wherein the environmental test apparatus is provided.

  In the invention described in claim 7, the test chamber has a window through which the inside can be seen, and the window has a multiple structure in which a plurality of transparent plates are provided, and a dry gas is introduced between the transparent plates. Therefore, even if a temperature difference occurs between the test chamber and the outside, the inside of the transparent plate of the window does not condense. As a result, the inside of the test chamber can be observed well from the outside.

  The invention according to claim 8 is characterized in that a dry gas is introduced into the air conditioning unit, and the inside of the air conditioning unit can be maintained in a positive pressure tendency. Device.

In the invention according to claim 8, since the inside of the air conditioning unit can be maintained in a positive pressure tendency, when the air conditioning unit and the test chamber are shielded by the shielding member, the air in the air conditioning unit is externally exposed from the periphery of the shielding member. To leak. Conversely, it is difficult for outside air to enter the air conditioning unit, and the temperature and humidity of the air in the air conditioning unit are easily maintained within a predetermined range. That is, it is easy to maintain the test execution environment.
Moreover, the effect which prevents the dew condensation of each part can also be expected.

  According to a ninth aspect of the present invention, the air conditioning unit has an open / close door, an air conditioning ventilation path, and an air chamber, and air circulates between the air conditioning ventilation path and the air chamber, and is independent of the environment. 9. The environmental test apparatus according to claim 1, wherein the environmental test apparatus can be used as a test apparatus, and the test chamber is attached to an opening / closing door of an air conditioning unit.

According to the ninth aspect of the present invention, air adjusted to a predetermined temperature by the air conditioning unit is supplied to the air chamber, and an environmental test of the DUT can be performed in the air chamber. Moreover, the test object can be attached to or removed from the air chamber by opening the open / close door of the air conditioning unit.
Furthermore, since the test chamber is attached to the open / close door of the air conditioning unit, it is possible to perform an environmental test on the DUT in both the air chamber and the test chamber.
When the environmental test is performed in the air chamber, the air chamber of the air conditioning unit and the test chamber may be blocked by a shielding member. By doing so, the substantial test space can be narrowed, and the temperature of the air in the air chamber (test space) can be quickly adjusted to a predetermined temperature.
In addition, when a structure in which a duct for guiding air to the test chamber side is provided in the air chamber, the entire air chamber can be used as one test chamber by removing the duct.

  The environmental test apparatus of the present invention can quickly prepare the test environment of the DUT and can reduce the time required for the environmental test.

1 is a perspective view of a test apparatus according to an embodiment of the present invention. It is a perspective view of the environmental test apparatus which is a part of the test apparatus of FIG. It is a perspective view in the state where the small door of the environmental test apparatus of FIG. 2 was opened. It is a perspective view of the state which opened the large door of the environmental test apparatus of FIG. It is explanatory drawing which conceptually demonstrated the cross section of the environmental test apparatus which is a part of the test apparatus of FIG. 1 in side view, and shows the state which closed the small door. FIG. 2 is an explanatory diagram conceptually illustrating a cross section of an environmental test apparatus as a part of the test apparatus of FIG. 1 in a side view, and shows a state where a small door is opened. It is a perspective view of the window part of a heat insulation box. It is a partial perspective view of the window part which is a window part of an heat insulation box, and cuts and shows a part of glass. It is explanatory drawing which shows the positional relationship of a duct, a test room side rectification member, an air-conditioning part side rectification member, and a shielding member. FIG. 2 is an explanatory diagram conceptually illustrating a cross section of an environmental test apparatus as a part of the test apparatus of FIG. 1 in a plan view, showing a state where a large door is opened. FIG. 2 is an explanatory diagram conceptually illustrating a cross section of an environmental test apparatus as a part of the test apparatus of FIG. 1 in a plan view, showing a state in which a large door is closed. It is an end view of the AA cross section of FIG. It is explanatory drawing which demonstrated notionally the side view of the cross section of the environmental test apparatus of other embodiment of this invention.

Embodiments of the present invention will be further described below.
The test apparatus 10 of this embodiment is a composite test apparatus, and more specifically, a composite type tensile test apparatus.
The test apparatus 10 includes an environmental test apparatus 1 and an external force applying apparatus 200. In addition, the test apparatus 10 includes an external force applying apparatus mounting table 300, a thermostatic chamber mount 301, and an optical stretch detection apparatus 220 as auxiliary devices.

It can be said that the environmental test apparatus 1 has a heat insulation box 13 that functions as a test room attached to the front door (opening / closing door of the air conditioning unit) of a small environmental test apparatus.
That is, the environmental test apparatus 1 includes a main body 11 that functions as an air conditioning unit, and a heat insulating box 13 attached to a front door (hereinafter referred to as a large door 12) of the main body 11, and the inside of the heat insulating box 13 is illustrated in FIG. It functions as the test room 15 as shown in FIG. The heat insulating box 13 is unitized and can be attached to an existing or commercially available environmental test apparatus 1.
That is, there is an air chamber 16 covered with a heat insulating wall 28 in the main body (air conditioning unit) 11 of the environmental test apparatus 1, and a test chamber 15 covered with a heat insulating wall 32 in the heat insulating box 13. Both communicate with each other and form the heat insulating region 7 as a unit.
The heat insulating box 13 has a smaller size (volume) than the main body 11 and is a protruding portion that protrudes in the horizontal direction from the main body 11.

The main body 11 of the environmental test apparatus 1 functions as an air conditioning unit, has an air chamber 16 inside, and can create a desired environment in the air chamber 16.
The basic configuration of the main body 11 of the environmental test apparatus 1 is not much different from a known environmental test apparatus.
The main body 11 of the environmental test apparatus 1 has a heat insulation tank 17 covered with a heat insulation wall 28 as shown in FIGS. An air chamber 16 is formed in a part of the heat insulating tank 17. The main body 11 of the environmental test apparatus 1 can be used alone as an environmental test apparatus. In this case, the air chamber 16 becomes a space for installing an object to be tested (not shown).

The main body 11 further has air conditioning means 48 as in a known environmental test apparatus. In the present embodiment, the air conditioning means 48 includes the air conditioner 18 and the blower 20. The air conditioner 18 includes a humidifying device 21, a cooling device 22, and a heater (heating device) 23.
The main body 11 has an air-conditioning ventilation path 25 that communicates with the air chamber 16 in an annular shape, and the air-conditioning equipment 18 and the blower 20 described above are incorporated in the air-conditioning ventilation path 25.

The air conditioning ventilation path 25 is formed in a part of the heat insulating tank 17 and communicates with the air chamber 16 through the air blowing part 26 and the air introducing part 27. In this embodiment, the air blowing part 26 is provided at one place, but the air introducing part 27 is provided at two places. The air blowing portion 26 is at the center in the height direction of the heat insulating tank 17, and the air introducing portion 27 is above and below the air blowing portion 26.
That is, in this embodiment, the air conditioning ventilation path 25 communicates with the air chamber 16 side by the air blowing section 26 and the air introduction section 27, and the air conditioning ventilation path 25 has an air inlet / outlet on the air chamber 16 side.

Therefore, when the blower 20 is activated, the air in the air chamber 16 is introduced into the air-conditioning ventilation path 25 from the upper and lower air introduction portions 27. Then, the air conditioning ventilation path 25 enters a ventilation state, air contacts the air conditioning equipment 18 to perform heat exchange and humidity adjustment, and the adjusted air is blown into the air chamber 16 from the central air blowing section 26.
Further, a temperature sensor and a humidity sensor (not shown) are provided in the vicinity of the air blowing portion 26 of the air conditioning ventilation path 25.
When using the environmental test apparatus 1, the air conditioner 18 is operated so that the blower 20 is operated to bring the air-conditioning ventilation path 25 into ventilation, and the detected values of the temperature sensor and the humidity sensor approach the temperature and humidity of the set environment. To control.

  In addition, the heat insulation wall 28 that partitions the main body 11 is provided with a dry air introduction pipe 3 that introduces dry air from the outside. The dry air introduction tube 3 is connected to a dry air generating device (not shown) provided outside the environmental test apparatus 1 (main body portion 11), and can guide dry air into the main body portion 11. The dry air generating device has a function of generating compressed air having a dew point of minus 50 to 70 degrees (preferably minus 55 degrees to 65 degrees) by treating compressed air with a hygroscopic agent such as silica gel.

A large door 12 is provided in the air chamber 16 of the main body 11. However, in this embodiment, the large door 12 is provided with a large opening 30.
The large door 12 is attached to the main body 11 on the air chamber 16 side via a hinge (not shown) and can swing.
In the main body 11 employed in the present embodiment, a duct 55 is provided in the air chamber 16. The duct 55 is provided between the air blowing portion 26 of the air conditioning ventilation path 25 and the opening 30 of the large door 12.
The duct 55 extends from the air-conditioning means 48 side to the large door 12 side, and has a relatively large opening at the upstream end (air blowing part 26 side) and an opening at the downstream end (test chamber 15 side). Small. That is, the opening at the upstream end of the duct 55 is larger than the opening at the downstream end.
It is desirable that the duct 55 can be easily removed from the air chamber 16.

The proximal end side of the duct 55 is in contact with or in the vicinity of the air blowing portion 26 of the air conditioning ventilation passage 25, and the opening on the proximal end side of the duct 55 is the air blowing portion 26 of the air conditioning ventilation passage 25. Covering.
The duct 55 is fixed to the inner wall of the main body 11 by a support member (not shown).
A flange 57 is provided on the front end side of the duct 55 as shown in FIG. A flange 57 provided on the front end side of the duct 55 is an outer flange and is provided outside the opening end of the duct 55.
The position of the opening end on the front end side of the duct 55 is in the vicinity of the back surface side of the large door 12 of the main body 11.

In this embodiment, the heat insulation box 13 is fixed to the outside of the large door 12.
The heat insulation box 13 is integrated with the main body 11 and airtightness is secured between the two. In the present embodiment, the volume of the heat insulating box 13 is smaller than the volume of the main body 11.

The heat insulating box 13 is a housing covered with a heat insulating wall 32, and has a housing portion 33 and a small door 31.
As shown in FIG. 5, the housing 33 has a top wall 35, a bottom wall 36, left and right side walls 37 and 38 (FIG. 11), and the front side and the back side are open.
The opening on the back side communicates with the opening 30 of the large door 12 of the main body 11.

The heat insulating box 13 is provided with a pair of rectifying members 2 and 14 at a position sandwiching a shielding member 51 described later. Both of the pair of rectifying members 2 and 14 are fixed to the heat insulating box 13, and most of both are arranged in the housing portion 33.
As described above, the pair of rectifying members 2 and 14 belong to the heat insulating box 13 side, and both are arranged in the axial direction.
Of the pair of rectifying members 2 and 14, the rectifying member 14 provided at a position closer to the test chamber 15 than the shielding member 51 is referred to as a test chamber-side rectifying member 14, and is provided closer to the main body 11 than the shielding member 51. The straightening member 2 is referred to as an air chamber side straightening member 2.

The air chamber side rectifying member 2 has a plurality of lattice-shaped ventilation paths 73 as shown in FIG.
Each lattice-shaped ventilation path 73 is arranged in parallel. Each lattice-shaped ventilation path 73 extends over the entire length of the air chamber side rectifying member 2 and has a certain length.

A flange 58 is provided at the end (base end side) of the air chamber side rectifying member 2 on the air chamber 16 side as shown in FIG. The flange 58 provided on the base end side of the air chamber side rectifying member 2 is an outer flange and is provided outside the open end of the air chamber side rectifying member 2.
The air chamber side rectifying member 2 is fixed to the heat insulating box 13. As described above, the heat insulating box 13 is fixed to the large door 12 of the main body 11, and the large door 12 is swingably attached to the main body 11. Therefore, the posture of the air chamber side rectifying member 2 changes as the large door 12 swings as shown in FIGS.

When the large door 12 closes the air chamber 16 of the main body 11 as shown in FIG. 11, the proximal end side of the air chamber side rectifying member 2 is in contact with the distal end side of the duct 55.
More specifically, when the large door 12 is closed and the space in the heat insulation box 13 forms a space integral with the air chamber 16 of the main body 11, the large door 12 is provided on the front end side of the duct 55. The flange 57 provided on the base end side of the air chamber side rectifying member 2 matches the flange 57 thus formed, and the air chamber side rectifying member 2 and the duct 55 are in a continuous state. Therefore, the duct 55 and the air chamber side rectifying member 2 are integrated to form a series of air flow paths.
On the other hand, when the large door 12 is opened as shown in FIG. 10, the air chamber side rectifying member 2 swings together with the large door 12 and is separated from the duct 55.

As shown in FIG. 9, notches 2a and 2a are formed on both side surfaces of the end portion of the air chamber side rectifying member 2 on the test chamber 15 side. The notches 2 a and 2 a are formed by removing the end side wall of the air chamber side rectifying member 2, and are formed from the upper end to the lower end of the air chamber side rectifying member 2. That is, by providing the notches 2a and 2a, there is an opening on both sides of the end portion of the air chamber side rectifying member 2, and the blower is also discharged from the openings (notches 2a and 2a). Yes.
It can be said that the length of the ventilation path 73 on both side portions is slightly shorter than the length of the ventilation path 73 in the central portion due to the notches 2a and 2a. In other words, as for the end portion of the air chamber side rectifying member 2 on the downstream side in the air flow direction, both side portions are retracted to the upstream side from the central portion.

As will be described later, the shielding member 51 closes the space between the air chamber 16 of the main body 11 and the heat insulating box 13. At this time, the air blown out through the duct 55 and the air chamber side rectifying member 2 is air rectified. It can return to the air chamber 16 side through the notches 2a and 2a of the member 2.
On the other hand, when the shielding member 51 is opened and the air chamber 16 of the main body 11 and the heat insulating box 13 are in communication with each other, the air chamber side rectifying member 2 reduces the waste and the wind flows to the test chamber 15 side. Sent.

A test chamber side rectifying member 14 is provided in the housing portion 33. The test chamber side rectifying member 14 has a lattice-like ventilation path 75 (FIG. 9) similar to the air chamber side rectifying member 2. The ventilation path 75 of the test chamber side rectifying member 14 is surrounded by walls having four parallel surfaces. Each lattice-shaped ventilation path 75 is arranged in parallel. Each lattice-shaped ventilation path 75 extends over the entire length of the test chamber side rectifying member 14 and has a certain length.
The upstream portion of the ventilation passage 75 of the test chamber side rectifying member 14 is in close proximity to the downstream portion of the air chamber rectifying member 2. That is, a gap is formed between the test chamber side rectifying member 14 and the air chamber side rectifying member 2 in which a shielding member 51 described later is installed. The test chamber side rectifying member 14 and the air chamber side rectifying member 2 are opposed to each other with the gap therebetween, and the central axes of the ventilation paths 73 and 75 of the both are substantially coincident with each other.
A site on the downstream side of the test chamber side rectifying member 14 is close to a site where a DUT 210 to be described later is disposed.

There is a slit 50 (FIG. 2) in the right side wall 37 of the housing portion 33. The slit 50 communicates the inside and outside of the heat insulating box 13. The slit 50 extends in the vertical direction. The slit 50 is provided with a seal 50a (FIG. 11), and the slit 50 is kept airtight.
Further, grooves 35a and 36a (FIG. 5) are provided on the inner surface sides of the top wall 35 and the bottom wall 36, respectively. Further, a groove 38 a (FIG. 11) is provided on the inner surface side of the left side wall 38.
The grooves 35 a, 36 a, and 38 a are provided in the same vertical plane as the slit 50.
The grooves 35 a, 36 a, 38 a and the slit 50 are provided closer to the air chamber 16 than the test chamber side rectifying member 14.

As shown in FIG. 9, the shielding member 51 is a thin plate-like square member, and has an upper end portion 61, a lower end portion 62, a handle side portion 63, and a distal end side portion 64.
A handle hole 51 a is provided in the vicinity of the handle side portion 63. The operator can hold the shielding member 51 by putting his hand in the handle hole 51a. That is, by providing a handle hole 51 a in the shielding member 51, an operator can easily operate the shielding member 51 and slide the shielding member 51.
In the present embodiment, the shielding member 51 is a simple plate and is not expected to have much heat insulation properties, but may have heat insulation properties. The shielding member 51 has substantially no air permeability.

When the shielding member 51 is inserted into the heat insulating box 13 from the slit 50, the upper end portion 61 of the shielding member 51 fits into the groove 35a of the top wall 35, and the lower end portion 62 fits into the groove 36a of the bottom wall 36, leading side. The portion 64 fits into the groove 38a of the left side wall 38.
In other words, the shielding member 51 enters the heat insulating box 13 through the slit 50 which is the entrance of the heat insulating box 13, the upper end 61 and the lower end 62 move along the grooves 35a and 36a, and the tip side part 64 has the groove. Fits in 38a. When the distal end side portion 64 is fitted in the groove 38a, the shielding member 51 is disposed between the air chamber 16 and the test chamber 15 as shown in FIG.
The shielding member 51 is exposed to the outside of the heat insulating box 13 (slit 50) in a state where the distal end side portion 64 is fitted in the groove 38a. That is, the operator can always operate the shielding member 51 by gripping the handle hole 51a.

  Further, packings (not shown) are provided in the grooves 35a, 36a, and 38a, so that airtightness between the grooves 35a, 36a, and 38a and the shielding member 51 is improved. That is, when the shielding member 51 is disposed between the air chamber side rectifying member 2 and the test chamber side rectifying member 14, the ventilation of the air chamber 16 and the test chamber 15 is blocked.

  The small door 31 has a small door body 31a and a window 31b as shown in FIGS. The small door 31 has a structure in which the window portion 31b is fitted into the small door main body portion 31a and integrated.

As shown in FIGS. 7 and 8, the window portion 31 b includes transparent plate-like glasses 42 a, 42 b, 42 c (transparent plate) and a frame-like member 76. As shown in FIG. 8, the frame member 76 is a combination of four frame pieces 43a, b, c, and d.
Glass 42a, 42b, 42c has the structure attached to the frame-shaped member 76 comprised by the four pieces of frame pieces 43a, b, c, d at intervals. In other words, the window portion 31b has a multiple structure in which a plurality of glasses are laminated at intervals.

Each of the frame pieces 43a, b, c, d constituting the frame member 76 has three grooves 77 on one surface as shown in FIG. Each groove 77 is formed in parallel with a constant interval.
The frame-shaped member 76 is a combination of four frame pieces 43a, b, c, d in a rectangular shape with the groove 77 inside. Therefore, three grooves 77 are provided on the inner peripheral surface of the frame member 76. Each groove 77 is connected in an annular shape.

In the present embodiment, the four sides of the glass 42 a, 42 b, 42 c are fitted into each groove 77, and the glasses 42 a, 42 b, 42 c are stacked on the frame-shaped member 76 with a gap. Therefore, the glasses 42a to 42c are separated from each other, and spaces 44a and 44b (FIG. 8) are formed in the window portion 31b by the space between the glasses 42a to 42c and the groove 77 of the frame member 76.
Each groove 77 is filled with a caulking agent and sealed, and airtightness between the glasses 42a, 42b, and 42c and the frame member 76 is ensured.

The through-holes 6a and 6b are provided in the frame piece 43a constituting the upper side of the frame-shaped member 76. The through-holes 8a and 8b are also provided in the frame piece 43c constituting the lower side of the frame-shaped member 76.
The through holes 6a and 6b provided in the frame piece 43a constituting the upper side are opened in a space 44 sandwiched between the glasses 42a, 42b and 42c. Specifically, the through hole 6a opens into a space 44a formed between the glass 42a and the glass 42b, and the through hole 6b opens into a space 44b formed between the glass 42b and the glass 42c.
Similarly, the through holes 8a and 8b provided in the frame piece 43c constituting the lower side are opened in a space 44 sandwiched between the glasses 42a, 42b and 42c. Specifically, the through hole 8a opens into a space 44a formed between the glass 42a and the glass 42b, and the through hole 8b opens into a space 44b formed between the glass 42b and the glass 42c.
.

  The two through holes 6 a and 6 b on the upper side of the frame-like member 76 are connected via the tube member 19. That is, one end of the pipe member 19 is connected to the through hole 6a, and the other end is connected to the through hole 6b. Therefore, the spaces 44 a and 44 b are partitioned by the glass 42 b, but communicate with each other through the pipe member 19 so as to allow ventilation.

  A flexible supply pipe 9a is connected to the through hole 8a on the lower side of the frame-shaped member 76, and the space 44a is connected to a dry air generator (not shown) via the supply pipe 9a. In addition, a flexible discharge pipe 9b is connected to the other through hole 8b on the lower side of the frame-like member 76, and the space 44b is released to the atmosphere via the discharge pipe 9b.

  The window 31b is fitted into the small door main body 31a so that the glass 42c side of the window 31b is positioned on the test chamber 15 side.

The small door 31 is swingably attached to the front side opening portion of the housing portion 33 via a hinge (not shown).
By closing the small door 31, the front surface of the housing portion 33 is closed.
As described above, the housing 33 of the heat insulation box 13 is open on the back side (upstream side), and the test chamber 15 formed in the heat insulation box 13 communicates with the air chamber 16 of the main body 11. Yes.

As shown in FIG. 5, the heat insulating box 13 is provided with two through holes 105 communicating with the outside. The through hole 105 communicates the inside and outside of the heat insulating region 7 surrounded by the heat insulating walls 28 and 32. The through-hole 105 is for inserting a part of the external force applying device 200 or its accessory. In the present embodiment, the rods 205 and 207 of the external force applying device 200 are inserted into the through hole 105.
That is, in the environmental test apparatus 1 of the present embodiment, the through hole 105 is provided in the top wall 35 portion and the bottom wall portion 36 of the heat insulating box 13.
In the present embodiment, rectangular parallelepiped cavities 45, 46 are provided in the top wall 35 and the bottom wall 36, and the block body 100 (see FIG. 3) is built in the cavities 45, 46. A through hole 105 is provided. The inner walls of the hollow portions 45 and 46 are in contact with the block body 100 to ensure airtightness. Therefore, the through-hole 105 provided in the block body 100 is an opening substantially penetrating the heat insulating box 13, and communicates the inside of the heat insulating region 7 and the outside of the environmental test apparatus 1.

Since the structure of the cavity 45 and the block body 100 of the top wall 35 and the structure of the cavity 46 and the block body 100 of the bottom wall 36 are the same, the structure on the top wall 35 side will be described as a representative.
As shown in FIG. 3, a notch 52 is provided at the end of the top wall 35 of the housing 33.
The notch 52 is obtained by missing the heat insulating wall 32 and has a rectangular shape. Cover plates 56 are provided on the inner and outer surfaces (upper and lower surfaces) of the heat insulating box 13 of the notch 52.

As shown in FIG. 5, a pipe 47 is embedded in the heat insulating wall 32 of the housing part 33, and the notch part 52 and the outside of the housing part 33 are connected by the pipe 47. The pipe 47 is connected to a negative pressure generator 112 and a nitrogen cylinder 113 installed outside. The negative pressure generator 112 is a blower, and the suction side of the blower is connected to the pipe 47.
A switching valve (electromagnetic three-way valve) 115 is provided between the negative pressure generator 112 and the nitrogen cylinder 113 and the notch 52, and the negative pressure generator 112 and the nitrogen cylinder 113 can be switched.

The nitrogen cylinder 113 is an example of a dry gas supply source. As the dry gas, it is also possible to employ dry air with a low dew point obtained by drying compressed air in addition to nitrogen gas. That is, instead of the nitrogen cylinder 113, a compressor and a drying device can be used.
In the present embodiment, the dry gas supply source (nitrogen cylinder 113) and the negative pressure generator 112 are connected to the pipe 47, and a configuration in which both can be switched is adopted, but only one of them may be used. . Further, the dry gas supply source (such as the nitrogen cylinder 113) and the negative pressure generator 112 are not essential.
The hollow portion 45 of the top wall 35 has been described above, but the same applies to the hollow portion 46 of the bottom wall 36.

The block body 100 is a foam made of a relatively soft resin such as a silicon resin. The block body 100 has a heat insulating effect.
And as shown in FIG. 3, the block body 100 is accommodated in the housing | casing part 33 one pair at the upper and lower sides.

Next, the external force applying device 200 will be described.
The external force imparting device 200 is a tensile tester. As shown in FIG. 1, the external force imparting device 200 has a base part 201 and a portal frame 202.
The portal frame 202 has a guide rail (not shown), and an elevating bar (drive unit) 203 is engaged with the guide rail of the portal frame 202.
An upper rod 205 is provided at the lower part of the elevating bar 203, and an upper gripping tool (holding member) 206 is provided at the tip of the upper rod 205. In other words, the upper grip 206 serving as a holding member is attached to the elevating bar 203 serving as the driving unit via the upper rod 205.

The base portion 201 is provided with a lower rod 207, and a lower grip (holding means) 208 is provided at the tip of the lower rod 207.
The external force applying device 200 includes a moving device that moves the upper gripping tool 206 upward, an extension meter that detects the amount of movement of the gripping tool, and a load meter that detects the tensile load, as in a known tensile testing machine. (Not shown). However, in this embodiment, it is desirable not to use the elongation meter attached to the external force applying device 200 but to use a separately prepared optical elongation detector 220. Of course, an elongation meter attached to the external force applying device 200 may be used, and the elongation may be measured by other methods.

  Next, the external force applying device mounting table 300 (FIG. 1) will be described. The external force applying device mounting table 300 is a simple table, and includes a mounting plate 302 on which the external force applying device 200 is mounted and a leg portion 303 that supports the mounting plate 302 in a hollow state.

  The thermostatic chamber mount 301 includes a pedestal 305 and a telescopic guide 306. The pedestal portion 305 is substantially cubic and has a certain weight. The pedestal 305 is provided with height adjusting means 310. The height adjusting means 310 is a known one.

  In the telescopic guide 306, the fixed side member of each telescopic rod 311 is fixed to the upper surface of the pedestal portion 305. And if the full length of the expansion-contraction hook 311 is extended, a movable side part will protrude from the base part 305 in the shape of a cantilever.

  The optical extension detection device 220 is a video camera, and takes an image of the test object 210 and records the extension of the test object 210. As described above, the optical elongation detector 220 is not essential, and other alternative means can be adopted.

Next, the relationship between each member which comprises the test apparatus 10 is demonstrated.
As described above, the test apparatus 10 of the present embodiment is configured by the environmental test apparatus 1 and the external force applying apparatus 200.
As shown in FIG. 1, the external force applying device 200 is placed on a mounting plate 302 of the external force applying device mounting table 300.
The environmental test apparatus 1 is installed so that the heat insulating box 13 as a protruding portion enters a space surrounded by the portal frame 202 of the external force applying apparatus 200.
More specifically, as shown in FIG. 1, a thermostatic chamber pedestal 301 is disposed on the back side of the external force applying device 200, and the environmental testing apparatus 1 is controlled at a constant temperature by the movable side portion of the telescopic guide 306 of the thermostatic chamber pedestal 301. It is supported in a state of projecting from the pedestal portion 305 of the tank mount 301 (projecting is not essential). The environmental test apparatus 1 is supported in a cantilever manner by the telescopic guide 306 of the thermostatic chamber mount 301, and the heat insulating box 13 that is a protruding portion of the environmental test apparatus 1 is inserted into the portal frame 202 of the external force applying apparatus 200. Yes.
In particular, in the present embodiment, the test chamber 15 (insulation box 13) for performing the test protrudes from the main body 11 in the horizontal direction and projects out of the main body 11 so that the heat insulation box 13 is a base of the external force applying device 200. A wide space 222 is secured in the heat insulating box 13 and the external force applying device 200 without contacting the portion 201.

The upper rod 205 of the external force applying device 200 passes through the heat insulating box 13, and the upper gripping tool (holding member) 206 is in the heat insulating box 13.
The same applies to the lower rod 207 side of the external force applying device 200. The lower rod 207 of the external force applying device 200 penetrates the heat insulating box 13, and the lower gripping tool (holding member) 208 is in the heat insulating box 13.

  The test chamber 15 of the heat insulation box 13 and the external force applying device 200 are aligned with each other at the time of installation. That is, it is adjusted so that the center of the upper and lower through holes 105 of the heat insulating box 13 completely coincides with the line connecting the upper rod 205 and the lower rod 207 of the external force applying device 200.

  The position of the DUT 210 in the test chamber 15 is as shown in FIGS. 5, 6, and 12, and the DUT 215 of the DUT 210 before the downstream opening of the test chamber side rectifying member 14. Installed so that there is.

  As shown in FIG. 1, the video camera as the optical stretch detection device 220 is installed in front of the small door 31 of the test chamber 15, and the DUT 210 in the test chamber 15 passes through the glasses 42 a, 42 b and 42 c of the small door 31. Can be taken.

Next, a procedure for performing a tensile test using the test apparatus 10 of the present embodiment will be described. The tensile test described below is performed by subjecting the DUT 210 to a low temperature environment and performing a tensile test. In the following tests, the only environmental factor is temperature, and humidity is not controlled.
Therefore, the main body 11 that functions as an air conditioning unit uses the cooling device 22 and the heater (heating device) 23 of the air conditioning means 48 to air-condition, and does not use the humidifying device 21.
In addition, the tensile test is continuously performed on a large number of test objects 210.

In the first tensile test, the shielding member 51 may be inserted into the slit 50 of the heat insulating box 13 or may be pulled out. Moreover, the air conditioning means 48 of the main body 11 that functions as an air conditioning unit may be driven in advance, or preparation may be advanced in a stopped state.
As an example, it is assumed that the shielding member 51 is inserted and the cooling device 22 and the like are prepared for the test in a stopped state.

When performing a tensile test using the test apparatus 10 of the present embodiment, first, the DUT 210 is installed in the test chamber 15.
Specifically, first, the small door 31 of the environmental test apparatus 1 is opened.

Then, the DUT 210 is sandwiched between the grippers 206 and 208.
Thereafter, the small door 31 is closed to make the test chamber 15 substantially sealed.

  Thereafter, the air conditioning unit 48 is activated to circulate the air adjusted to a predetermined temperature in the air chamber 16 and the test chamber 15 to maintain the heat insulating region 7 in a predetermined temperature environment.

Further, a dry air generating device (not shown) is driven to introduce dry air into the air chamber 16 through the dry air introduction pipe 3. As a result, the air chamber 16 exhibits a positive pressure tendency.
Furthermore, dry air is supplied to the space 44a of the window 31b of the heat insulating box 13 through the supply pipe 9a.
The order of activation of the air-conditioning means 48, activation of the dry air generation device, and supply of dry air to the window portion 31b is arbitrary, and any of them may be performed first or simultaneously.

  Further, the shielding member 51 is pulled to the outside so that most of the shielding member 51 is pulled out. The shielding member 51 has a stopper (not shown). When the shielding member 51 is pulled out, most of the shielding member 51 is pulled out, and the air chamber 16 of the main body 11 and the test chamber 15 are communicated without any barrier. It stops in the state.

When the shielding member 51 is moved in the pulling direction, the air chamber 16 and the test chamber 15 communicate with each other, and the air chamber side rectifying member 2 and the test chamber side rectifying member 14 face each other with a slight gap therebetween.
As a result, the air blown from the duct 55 along the air chamber side rectifying member 2 by the blower 20 enters the test chamber side rectifying member 14 across the above-described slight gap and is blown toward the DUT 210. .

The flow of air in the environmental test apparatus 1 during the test is as shown by the arrows in FIG. That is, by starting the blower 20 of the air conditioning means 48, the air in the air chamber 16 is introduced from the air introduction unit 27 into the air conditioning ventilation path 25. Then, the air-conditioning ventilation path 25 enters a ventilation state, air contacts the air-conditioning device 18 to perform heat exchange and temperature adjustment, and the adjusted air is blown out from the air blowing portion 26 to the duct 55 in the air chamber 16.
Therefore, the air blown from the air blowing section 26 is blown into the test chamber 15 via the duct 55, the air chamber side rectifying member 2, and the test chamber side rectifying member 14, and directly into the test region 215 of the DUT 210. To.
The air that has passed through the installation area of the DUT 210 circulates outside the duct 55, returns to the air chamber 16 side, and is reintroduced into the air-conditioning ventilation path 25 from the air introduction unit 27.

As described above, the air chamber side rectifying member 2 has a plurality of lattice-shaped ventilation paths 73 as shown in FIG. The lattice-like ventilation paths 73 are arranged in parallel and have a certain length.
Therefore, the air blown immediately after being blown out from the blower 20 is in a turbulent state, but is rectified while passing through the ventilation path 73 of the air chamber side rectifying member 2 to be in a laminar flow state.
Therefore, the air blown from the air chamber side rectifying member 2 is jetted in a parallel state and hardly spreads.
Since the test chamber side rectification member 14 is provided close to and opposite to the discharge side of the air chamber side rectification member 2, the air blown in a parallel state does not spread and the test chamber side rectification member 14 is spread. And sprayed toward the device under test 210.

  That is, the air adjusted to a predetermined temperature by the air-conditioning means 48 of the main body 11 is blown by the blower 20 and is tested well through the duct 55, the air chamber side rectifying member 2, and the test chamber side rectifying member 14. The object 210 reaches the object 210, and the test execution environment of the object 210 is quickly prepared.

Then, the external force applying device 200 is activated, the upper rod 205 is raised at a constant speed, a tensile load is applied to the DUT 210, and the DUT 215 of the DUT 210 is broken. Then, record the relationship between the elongation and load of the sample.
That is, a tensile load is applied to the DUT 210, and the external deformation state during that time is photographed by the optical elongation detector 220. The elongation of the DUT 210 and the load applied to the DUT 210 are recorded in association with each other.

When photographing the DUT 210 with the optical elongation detector 220, a light 221 is placed outside the small window 41 provided on the side surface of the heat insulating box 13 as shown in FIG. It is desirable to illuminate the DUT 210.
When the subject 210 is illuminated from the side surface of the heat insulating box 13 and photographed, it is difficult to be affected by the reflection of the glasses 42a, 42b, and 42c of the small door 31 of the test chamber 15, and a clear image can be obtained.

In this embodiment, after one test object 210 is broken, another test object 210 is tested again. In that case, the shielding member 51 is slid and almost the whole is pushed into the heat insulating box 13. The shielding member 51 moves along the slit 50 provided in the housing part 33 of the heat insulating box 13 and is inserted into the housing part 33 of the heat insulating box 13.
The shielding member 51 enters between the test chamber 15 and the air chamber 16 as shown in FIGS. 6 and 11 and blocks ventilation between the test chamber 15 side and the air chamber 16 side. That is, the shielding member 51 temporarily shields between the air chamber 16 and the test chamber 15.
The air discharged from the air conditioning ventilation path 25 collides with the shielding member 51 and returns to the air conditioning ventilation path 25. That is, air circulates only between the air chamber 16 and the air conditioning ventilation path 25 and does not reach the test chamber 15.

  Here, the shielding member 51 is close to the downstream end of the air chamber side rectifying member 2, but the side portions of the air chamber side rectifying member 2 have notches 2 a and 2 a (FIGS. 9 and 11). The air that has been provided and has passed through the air chamber side rectifying member 2 can satisfactorily return to the air-conditioning ventilation path 25 through the notches 2a and 2a. That is, the notches 2 a and 2 a function as air escape paths that pass through the air chamber side rectifying member 2.

In addition, a packing (not shown) is provided between the shielding member 51 and the grooves 35a, 36a (FIG. 6) and the groove 38a (FIG. 11) provided on the inner wall of the housing portion 33, but air leaks temporarily. Even so, since the dry air is introduced into the air chamber 16 via the dry air introduction pipe 3 and tends to have a positive pressure, the air only leaks to the outside from the air chamber 16 side. It is difficult for outside air to enter. Therefore, the air in the air chamber 16 and the air-conditioning ventilation path 25 can maintain the state adjusted to the predetermined temperature by the air-conditioning means 48.
Moreover, although the air leaking outside is low temperature, since the dew point is low, it is hard to produce dew condensation.

Thus, the shielding member 51 is inserted into the heat insulating box 13, the ventilation between the test chamber 15 side and the air chamber 16 side is shut off, and the air is circulated only between the air chamber 16 of the main body 11 and the air conditioning ventilation path 25. Let Then, with the shielding member 51 inserted in the heat insulation box 13, the small door 31 of the heat insulation box 13 is opened, and the test chamber 15 is opened.
In the main body (air conditioning unit) 11 of the environmental test apparatus 1, the air conditioning means 48 and the blower 20 continue to operate, and air continues to circulate in the sealed space formed by the air chamber 16 and the air conditioning ventilation path 25. ing. However, a shielding member 51 is sandwiched between the test chamber 15 side and the air chamber 16 side, and ventilation between both chambers is blocked by the shielding member 51.
In addition, dry air is introduced into the air chamber 16 via the dry air introduction pipe 3, and the air chamber 16 has a positive pressure tendency.
Therefore, even when the small door 31 is opened after performing a tensile test in a low-temperature and low-humidity environment, outside air rarely flows into the main body (air conditioning unit) 11 and the outside air is prevented from entering the air-conditioning ventilation path 25. Excessive frost or condensation is prevented from occurring in the cooling device 22 of the air conditioner 18.
Further, the air leaking from the air chamber 16 has a low dew point, and therefore is unlikely to cause condensation.

And after opening the small door 31, the DUT 210 is taken out.
Thereafter, a new DUT 210 is placed in the test chamber 15 according to the procedure described above, and the test is repeated.
That is, a new device under test 210 is placed in the test chamber 15 and then the small door 31 is closed to make the test chamber 15 substantially sealed.
Furthermore, the shielding member 51 is pulled out to make the test chamber 15 communicate with the air chamber 16 of the main body 11. As a result, the atmosphere of the setting environment circulated in the main body 11 flows into the test chamber 15 through the duct 55 and the like, and the environment of the test chamber 15 is changed from the open atmosphere to the low temperature test environment. Let

Here, in this embodiment, since the volume of the air chamber 16 is larger than the volume of the test chamber 15, the time until the air in the test chamber 15 is adjusted to a predetermined temperature can be shortened.
That is, when the DUT 210 in the test chamber 15 is replaced, the small door 31 of the heat insulation box 13 is opened and the inside of the test chamber 15 is exposed to the outside air, so that the test execution environment is maintained in the test chamber 15. Disappear. On the other hand, since the test chamber 15 and the air chamber 16 are blocked by the shielding member 51, the air in the air chamber 16 is held in a state adjusted to a predetermined temperature by the air conditioning means 48.
When the replacement of the DUT 210 in the test chamber 15 is completed, the small door 31 is closed, the shielding member 51 is pulled out, the test chamber 15 and the air chamber 16 are communicated, and the air in both chambers is mixed. At that time, as the volume of the air chamber 16 is larger than the volume of the test chamber 15, the amount of air adjusted to a predetermined temperature is relatively large, and conversely, the amount of air exposed to the atmosphere is relatively large. The time required until the air in the test chamber 15 is adjusted to a predetermined temperature is shortened. Therefore, an environmental test can be performed promptly.

Moreover, dry air is supplied to the window part 31b of the small door 31 of the heat insulation box 13 from the dry air production | generation apparatus which is not shown in figure through the supply piping 9a. The dry air moves in the order of the through hole 8a, the space 44a, the through hole 6a, the pipe member 19, the through hole 6b, the space 44b, the through hole 8b, and the discharge pipe 9b shown in FIG.
That is, since dry air passes through the spaces 44a and 44b, dew condensation is suppressed even if there is a temperature difference or humidity difference between the air in the test chamber 15 and the outside air.

Here, in the window portion 31b, when dry air is supplied from the supply pipe 9a to the space 44a outside the test chamber 15, moved from the space 44a to the space 44b on the test chamber 15 side and discharged from the discharge pipe 9b. Highly effective in preventing condensation.
In the present embodiment, three glasses 42a, 42b, and 42c are used to form two spaces 44a and 44b. However, four or more glasses are provided, three or more spaces are formed, and each space is dry air. May move in order. Moreover, even if two sheets of glass are used and only one space is provided, a certain effect of preventing condensation can be obtained.

In the embodiment described above, the test chamber 15 is attached to the large door 12 of the small environmental test apparatus 1, and the test chamber 15 is located at a position protruding from the main body 11.
According to this configuration, spaces are formed above and below and right and left of the test chamber 15, and other objects can be easily arranged.

In the above-described embodiment, a normal environmental test can also be performed using the air chamber 16, which is versatile. That is, the main body 11 has a large door 12, and the air chamber 16 can be opened by opening the large door 12. Then, an environmental test can be performed by placing a test object in the air chamber 16. In this case, it is recommended to remove the duct 55 of the air chamber 16 and close the opening 30 of the large door 12 with a plate or the like. That is, it is preferable to shut off the air chamber 16 and the test chamber 15 and adjust only the air in the air chamber 16 to the test execution environment.
Further, the above-described embodiment can be made by modifying a normal small environmental test apparatus, and the versatility of parts is high. Moreover, it is rich in mass productivity.

  In the embodiment described above, the environmental test apparatus 1 has the function of adjusting the temperature environment and the function of adjusting the humidity environment, but the environmental test apparatus that can be employed in the present invention is limited to the above. Any one that can adjust either temperature or humidity is acceptable.

Each of the above embodiments is a composite type tensile tester, but the present invention is not limited to a tensile tester, but a compression tester, a shear tester, a hardness tester, an impact tester, It can also be applied to other testing machines such as a creep testing machine.
Furthermore, the present invention can also be applied to an environmental test apparatus that does not have an external force applying apparatus. The present invention can also be applied to a normal environmental test apparatus that does not have a through hole for a rod.
In the embodiment described above, the upper and lower grippers 206 and 208 are both disposed in the test chamber 15, but one or both of the upper and lower grippers 206 and 208 may be disposed outside the test chamber 15. .
When one or both of the upper and lower grips 206 and 208 are arranged outside the test chamber 15, at least a part of the device under test 210 or an accessory thereof, or a member connecting the external force applying device 200 and the device under test 210. One of them is inserted into the through hole 105 of the heat insulating box 13.

  Moreover, although embodiment described above showed the example which distribute | arranges the apparatus which applies external force to a to-be-tested object in the vicinity of the test room 15, this invention is not limited to this structure, It is specific to a to-be-tested object. A device that irradiates light, electromagnetic waves, or the like, or a device that continuously supplies the DUT to the test chamber 15 may be provided in the vicinity of the test chamber 15.

  The environmental test apparatus 1 of the present invention has been developed to be used for the purpose of testing the performance of materials and products inside, but can also be used for the purpose of processing members under a predetermined environment.

  In the test apparatus 10 described above, the heat insulation box 13 (test chamber 15) is externally attached to the environmental test apparatus 1 (main body 11) with screws or the like, but the large door 12 and the heat insulation box 13 are formed inseparably. May be.

  Further, the environmental test apparatus 1 does not have a circulation path composed of the air conditioning ventilation path 25, the duct 55, the air chamber side rectifying member 2, and the air chamber 16, and stirs the air in the air chamber 16. Good. That is, when the air in the air chamber 16 is agitated, the temperature and humidity of the air in the air chamber 16 become uniform. More specifically, an air conditioner 48 (air conditioner 18) is provided in the air chamber 16, and the air in the air chamber 16 is adjusted to a predetermined temperature and humidity by the air conditioner 48. When the inside of the air chamber 16 is stirred by a stirring member (not shown), all the air in the air chamber 16 is finally adjusted to the temperature and humidity of a predetermined test execution environment in which the air is set.

In the environmental test apparatus 1 described above, the shielding member 51 is manually operated, but may be operated by an actuator.
In the environmental test apparatus 1 described above, the shielding member 51 moves in the horizontal direction, but it may move in the vertical direction.
Moreover, in the environmental test apparatus 1 demonstrated above, although the shielding member 51 is one board, you may be comprised with many board | plates. Moreover, you may rock | fluctuate like a butterfly valve or a damper.

The environmental test apparatus 1 described above uses a commercially available environmental test apparatus 1 for the air conditioning unit. According to this configuration, not only the compatibility of the parts is increased, but also the environmental test can be performed in the air chamber 16 by removing the duct 55 in the air chamber 16. In this case, the large door 12 of the air chamber 16 is opened, and a test object is placed in the air chamber 16 to perform an environmental test.
However, the present invention is not limited to this configuration. As shown in FIG. 13, the air chamber 16 and the test chamber 15 are formed in one heat insulating tank, and the shielding member 51 is provided between them. May be.

DESCRIPTION OF SYMBOLS 1 Environmental test apparatus 2 Air chamber side rectification member 11 Main-body part (air-conditioning part)
12 Large door (open / close door)
14 Test chamber side rectification member 15 Test chamber 16 Air chamber 18 Air-conditioning equipment 25 Air-conditioning ventilation path 26 Air blowing portion 31b Window portion (window)
32 Insulation wall (outer wall)
42a, 42b, 42c Glass (transparent plate)
45,46 Cavity (through hole)
48 Air-conditioning means 51 Shielding member 55 Duct 200 External force applying device 210 DUT

Claims (9)

In an environmental test apparatus that performs a predetermined test in combination with an external force applying apparatus that applies an external force to a test object,
It has an air conditioning unit and a test room,
The air conditioning unit adjusts the internal air to a predetermined temperature,
The test chamber has an open / close door, the test chamber is covered with an outer wall, and the outer wall has a part of an external force applying device or an accessory thereof, a part of an object to be tested or an accessory thereof, and an external force applying device. And there is a through-hole that passes through at least one of the members connecting the DUT,
An environmental test apparatus characterized in that the test room and the air conditioning unit communicate with each other and have a shielding member for temporarily shielding between the test chamber and the air conditioning unit. It has an air conditioning unit and a test room,
The air conditioning unit adjusts the internal air to a predetermined temperature,
The test chamber has an open / close door, the test chamber is covered with an outer wall,
An environmental test apparatus characterized in that the test room and the air conditioning unit communicate with each other and have a shielding member for temporarily shielding between the test chamber and the air conditioning unit. The air conditioning unit has an air conditioning ventilation path with built-in air conditioning equipment and an air chamber, and air circulates between the air conditioning ventilation path and the air chamber,
The environmental test apparatus according to claim 1 or 2, wherein a duct for guiding air to the test chamber side is provided in the air chamber.   The environmental test apparatus according to claim 1, wherein an air conditioning unit side rectifying member is provided in the vicinity of the shielding member and on the air conditioning unit side.   The environmental test apparatus according to claim 1, wherein a test chamber side rectifying member is provided in the vicinity of the shielding member and on the test chamber side. The air conditioning unit has an air conditioning ventilation path with built-in air conditioning equipment and an air chamber, and air circulates between the air conditioning ventilation path and the air chamber,
A duct that collects the air blown from the air blowing portion of the air conditioning ventilation path and guides it to the test chamber side, an air conditioning unit side rectifying member, and a test chamber side rectifying member;
The environmental test apparatus according to claim 1, wherein the air conditioning unit side rectifying member and the test room side rectifying member are disposed at positions facing each other with the shielding member interposed therebetween.   The test chamber has a window through which the inside can be seen, and the window has a multiple structure in which a plurality of transparent plates are provided, and a dry gas is introduced between the transparent plates. The environmental test apparatus according to any one of 1 to 6.   The environmental test apparatus according to any one of claims 1 to 7, wherein a dry gas is introduced into the air conditioning unit, and the inside of the air conditioning unit can be maintained in a positive pressure tendency. The air conditioning unit has an open / close door, an air conditioning ventilation path, and an air chamber. Air circulates between the air conditioning ventilation path and the air chamber, and can be used independently as an environmental test apparatus. Yes,
The environmental test apparatus according to claim 1, wherein the test chamber is attached to an opening / closing door of an air conditioning unit.

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