JP7132870B2 - Environmental test equipment and test equipment - Google Patents

Description

The present invention relates to an environmental test apparatus capable of creating a desired environment within a test room. The present invention also relates to a testing apparatus for performing tests such as material tests.

A material testing apparatus for testing the basic properties of metal materials, rubber, and the like is known. Materials testing equipment includes, for example, tensile testers, compression testers, shear testers, hardness testers, impact testers, and the like. A creep tester for testing rubber or resin is also known.
Some tensile testers have a pair of grips, a moving device that moves one of the grips, an extensometer that detects the amount of movement of the grips, and a load meter that detects the tensile load.
In a typical tensile test, both ends of a test object molded into a predetermined shape are gripped by the pair of grippers described above, and one gripper is moved away from the other by a moving device. Then, the elongation of the sample during that time is measured with an extensometer, and the tensile load applied to the test object is measured with a load meter.

Also known are testing devices for testing the performance of materials under low-temperature and high-temperature environments. For example, if it is a device that performs a tensile test, it is equipped with a constant temperature device (environmental test device), and a test object is placed in the test chamber of the constant temperature device to perform the tensile test. Hereinafter, a test apparatus equipped with a constant temperature device will be referred to as a "composite test apparatus" in order to distinguish it from a normal test apparatus.

A composite tensile tester, which is one of the composite testing devices, is composed of a constant temperature device and a tension device that pulls the object under test. Similar to the tensile tester described above, the tensile device includes a pair of grippers, a moving device for moving one of the grippers, an extensometer for detecting the amount of movement of the grippers, and a load meter. be.
A tensile device used in a compound tensile test device is, for example, a moving device provided with a rod. A gripper is attached to the tip of the rod.

A typical composite type tensile test apparatus has a rod inserted through a through-hole of a constant temperature bath and a gripper installed in a test chamber of the constant temperature apparatus.
Then, the rod is moved to pull the specimen under test in the test chamber, and the elongation of the specimen and the load applied to the specimen during that period are measured.

Patent Literature 1 discloses an example of a composite testing apparatus. The composite test apparatus disclosed in Patent Document 1 is also composed of a constant temperature device and a tension device.

JP-A-2000-314692

The composite test apparatus disclosed in Patent Document 1 cannot change the total length of the test chamber according to the size and elongation of the test object, and it is possible to keep the volume of the test space to be air-conditioned small even when it is desired to keep it small. I can't.
However, there is a demand in the market for smaller volumes of test spaces to be air-conditioned.
SUMMARY OF THE INVENTION It is an object of the present invention to develop an environmental test apparatus and a test apparatus that can reduce the volume of a test space to be air-conditioned.

An aspect for solving the above-described problems is an environmental test device used in combination with an external force applying device, which has a test room capable of forming a desired environment, and the test room is air-conditioned. It has an air inlet for introducing the air and an exhaust port for discharging the air in the test chamber, and the test chamber has a through hole that communicates inside and outside, and the external force applying device is connected to the above through the through hole. An environmental test apparatus for applying an external force to a test object in a test chamber, comprising: a stationary member having a bottom member forming the bottom surface of the test chamber; The test chamber is defined by at least a portion of the stationary member, the top portion, and at least a portion of the side surface, and the movable member is positioned with respect to the stationary member. The environmental test apparatus is characterized in that the test chamber can be expanded and contracted by moving, and the air inlet and the exhaust port are provided in the fixed side member.
A specific aspect for solving the above-described problems is an environmental test device used in combination with an external force applying device, comprising a test chamber capable of forming a desired environment, wherein the test chamber contains The external force application device has an air inlet for introducing conditioned air and an exhaust port for discharging the air in the test chamber, and has a through hole that communicates the inside and outside of the test chamber, and the external force applying device via the through hole. An environmental test apparatus for applying an external force to a test object in the test chamber, comprising: a fixed side member having a bottom member forming the bottom surface of the test chamber; at least part of the stationary member, the ceiling, and at least part of the side surface define the test chamber, and the movable member is attached to the stationary member The air inlet and the exhaust port are provided in the stationary member, and at least most of the space between the movable member and the stationary member is non-existent. The environmental test device is characterized by being in contact with each other and having an air-permeable gap between them.

In the environmental test apparatus of this aspect, the test chamber is composed of a fixed side member and a movable side member. The test chamber can be expanded and contracted by moving the movable member with respect to the fixed member.
Since the environmental test apparatus of this aspect expands and contracts the entire length of the test chamber, the test space to be air-conditioned can be changed to an appropriate size according to the size and elongation of the test object.
In addition, in the environmental test apparatus of this aspect, the air inlet and the air outlet are provided in the fixed side member, so the total length of the test chamber can be shortened to the limit.
In other words, depending on the positions of the air inlets and the air outlets, the pipes leading to the air inlets and the air outlets may interfere with the movement of the movable member, restricting the movement range of the movable member. Therefore, there is a lower limit to the total length of the test chamber, and it is difficult to change the total length of the test chamber.
On the other hand, in this mode, since the air inlet and the exhaust port are provided in the fixed side member, the pipes leading to the air inlet and the exhaust port do not hinder the movement of the movable side member, and the entire length of the test chamber is extended. can be made smaller.

In each aspect described above, it is desirable that a pipe leading to at least one of the air inlet and the exhaust port passes under the fixed member and reaches at least one of the air inlet and the exhaust port.

According to this aspect, the pipe leading to the air inlet or the like does not interfere with the movement of the movable member, and the entire length of the test chamber can be reduced.

In each aspect described above, the fixed-side member has the bottom member as a top surface, and has a peripheral wall extending in a direction opposite to the moving-side member on the periphery of the bottom member, and the bottom member and the peripheral wall It is desirable to have an enclosed cavity.

According to this aspect, it is possible to ensure a wide range of movement of the movable member. Also, the test chamber can be appropriately closed.

In each of the above-described modes, it is desirable that most of the side surface of the movable member and the side surface of the stationary member are in a non-contact state and that there is a gap that allows air to pass therebetween.

In this aspect, the side surface of the moving-side member and the side surface of the stationary-side member are generally in a non-contact state. Therefore, when the movable member is moved up and down, there is no friction between the movable member and the fixed member, and noise is less likely to occur in the load meter that detects the tensile load.

In each of the above-described aspects, it is desirable that the upper portion of the moving side member has a smaller cross-sectional area in plan view than other portions of the moving side member.

According to this aspect, the space to be air-conditioned can be made smaller.

A mode relating to the test apparatus is characterized by comprising the environmental test apparatus described above and an external force application apparatus that applies an external force to the test object.

According to this aspect, the device under test can be placed in a desired environment and an external force can be applied to the device under test.

Another aspect of the test apparatus is a test apparatus having an external force applying device that applies an external force to a device under test, and a test chamber capable of forming a desired environment, wherein the external force applying device includes the device under test wherein one of the holding members is a fixed-side holding member fixed to the lower part, and the other holding member is a moving-side holding member that moves vertically, a fixed side member having an air inlet for introducing conditioned air into the test chamber, an exhaust port for discharging the air in the test chamber, and a bottom member constituting the bottom surface of the test chamber; It has a moving side member having a side surface, a lower side opening, and a cavity inside, and at least part of the fixed side member, the top part, and at least part of the side surface define the test chamber. the fixed side member is fixed to the fixed side holding member side, the moving side member is attached to the moving side holding member side, and the test chamber can be expanded and contracted by moving the moving side holding member. , wherein the air inlet and the air outlet are provided in the stationary member.
A more specific embodiment is a test apparatus having an external force applying device that applies an external force to a test object, and a test chamber capable of forming a desired environment, wherein the external force applying device applies an external force to the test object. In a test apparatus having a pair of holding members for holding, one of the holding members is a fixed side holding member fixed to a lower portion, and the other holding member is a movable side holding member that moves in a vertical direction, A fixed side member having an air inlet for introducing air-conditioned air into the test chamber, an exhaust port for discharging the air in the test chamber, and a bottom member constituting the bottom surface of the test chamber, a top portion and a side surface The test chamber is defined by at least a portion of the fixed side member, the top portion, and at least a portion of the side surface. , the fixed side member is fixed to the fixed side holding member side, the moving side member is attached to the moving side holding member side, and the test chamber can be expanded and contracted by moving the moving side holding member, The test apparatus is characterized in that the air inlet and the exhaust port are provided in the stationary member, and the movable member is attached so as to be able to move up and down with respect to the movable member.

The fixation of the fixed-side member to the fixed-side holding member may be done directly or through the intervention of another member. For example, the fixed-side member may be fixed to the fixed-side holding member via a rod to which the fixed-side holding member is attached, a pedestal, or the like.
Similarly, the attachment of the moving-side member to the moving-side holding member may be done directly or with the intervention of another member. For example, the moving side member may be engaged with a rod to which the moving side holding member is attached.
In the test apparatus of this aspect, since the stationary member is fixed to the stationary holding member, the stationary member is fixed and does not move in principle.
On the other hand, since the moving side member is attached to the side of the moving side holding member, it moves upward as the moving side holding member rises. Therefore, the entire length of the test chamber can be extended according to the elongation of the test object, and an appropriate test space can be secured.
In addition, in this aspect, since the air inlet and the exhaust port are provided in the fixed side member, the pipes leading to the air inlet and the exhaust port do not hinder the movement of the movable side member, and the overall length of the test chamber can be further reduced. be able to.

Yet another aspect is a test apparatus having an external force applying device that applies an external force to a test object, and a test chamber capable of forming a desired environment, wherein the external force applying device applies an external force to the test object. In a test apparatus having a pair of holding members for holding, one of the holding members is a fixed side holding member fixed to a lower portion, and the other holding member is a movable side holding member that moves in a vertical direction, a fixed side member having a bottom member forming the bottom surface of the test chamber; and a moving side member having a top portion and a side surface, a lower side being open, and a hollow portion inside, at least part of the fixed side member; The test chamber is defined by the top portion and at least a portion of the side surface, and at least most of the portion between the movable side member and the fixed side member is in a non-contact state and can be ventilated therebetween. There is a gap, the fixed-side member is fixed to the fixed-side holding member, the movable-side member is attached to the movable-side holding member, and the test chamber can be expanded and contracted by moving the movable-side holding member. A test apparatus characterized by:
It is preferable that a dry gas supply means is provided, dry gas is introduced into the test chamber from the dry gas supply means, and air in the test chamber leaks through the gap.
Yet another aspect is a test apparatus having an external force applying device that applies an external force to a test object, and a test chamber capable of forming a desired environment, wherein the external force applying device applies an external force to the test object. In a test apparatus having a pair of holding members for holding, one of the holding members is a fixed side holding member fixed to a lower portion, and the other holding member is a movable side holding member that moves in a vertical direction, a fixed side member having a bottom member forming the bottom surface of the test chamber; and a moving side member having a top portion and a side surface, a lower side being open, and a hollow portion inside, at least part of the fixed side member; The test chamber is defined by the top portion and at least a part of the side surface, and the side surface of the movable-side member and the side surface of the fixed-side member are mostly in a non-contact state. The fixed side member is fixed to the fixed side holding member, the moving side member is attached to the moving side holding member, and the test chamber is opened by moving the moving side holding member. and has a dry gas supply means, a dry gas is introduced into the test chamber from the dry gas supply means, and air in the test chamber leaks out from the gap. .

Here, "dry gas" means a gas containing less water vapor than the outside air.
In the environmental test apparatus of this aspect, the side surface of the moving-side member and the side surface of the fixed-side member are in a substantially non-contact state. Therefore, when the movable member is moved up and down, there is no friction between the movable member and the fixed member, and noise is less likely to occur in the load meter that detects the tensile load.
Moreover, in the test apparatus of this aspect, the dry gas is introduced into the test chamber from the dry gas supply means, and the air in the test chamber leaks through the gap. Even if the test chamber is in a low-temperature environment, the side surface of the movable-side member and the side surface of the fixed-side member do not freeze, and the non-contact state between the two is maintained.
In addition, since the leaked gas is a gas with a smaller amount of water vapor than the outside air, condensation and frost are less likely to occur outside the test chamber.

In each aspect described above, it is preferable that at least a portion of the holding member is exposed when the movable member is removed from the stationary member.

According to this aspect, it is easy to attach and detach the device under test.

In each aspect described above, it is preferable that the moving-side member is non-rotatably attached to the moving-side holding member.

According to this aspect, the movable member can be moved while maintaining a constant gap between the movable member and the fixed member.

In each aspect described above, it is desirable that the moving-side member is attached to the moving-side holding member so as to be able to move up and down.

According to this aspect, only the moving-side member can be lifted to expose the holding member in the test chamber. Therefore, according to this aspect, attachment and detachment of the device to be tested are facilitated.
Further, according to this aspect, a tensile test or the like can be performed without covering the test object with the test chamber.

The environmental test apparatus and test apparatus of the present invention can reduce the volume of the test space to be air-conditioned.

BRIEF DESCRIPTION OF THE DRAWINGS It is the perspective view which observed the test apparatus (composite test apparatus) of embodiment of this invention from the front side, and the inside of the circle is an enlarged view of an upper rod and a clamp. It is the perspective view which observed the piping system of the test apparatus (composite test apparatus) of FIG. 1 from the back side. (a) is an exploded perspective view of a test chamber, and (b) is an exploded perspective view with a part of (a) cut away. FIG. 2 is a piping system diagram of the test apparatus (composite test apparatus) of FIG. 1 and shows a state when a tensile test is being performed. FIG. 2 is a piping system diagram of the test apparatus (composite test apparatus) of FIG. 1 and shows a state when the tensile test is suspended. FIG. 2 is a front cross-sectional view of the test apparatus (composite test apparatus) of FIG. 1, showing a state immediately after the start of the test; FIG. 2 is a front cross-sectional view of the test apparatus (composite test apparatus) of FIG. 1, showing a state just before the end of the test; FIG. 2 is a front cross-sectional view of the test apparatus (composite test apparatus) of FIG. 1, showing a state in which the moving-side member is pulled up; (a), (b), and (c) are cross-sectional views showing modifications of the test chamber, and (d) is a perspective view showing another modification of the test chamber.

Embodiments of the present invention will be further described below.
The test apparatus 1 of this embodiment is a composite test apparatus, more specifically, a composite tensile test apparatus.
A test apparatus 1 of this embodiment is composed of an environmental test apparatus 2 and an external force application apparatus 3 . Further, in the environmental test apparatus 2 employed in this embodiment, the test chamber forming section 5 and the air conditioning section 6 are separated.
Furthermore, the test apparatus 1 of this embodiment has a mounting table 7 as an auxiliary device.

The test chamber-constituting part 5 of the environmental test apparatus 2 has a space serving as a test chamber 10 inside. 12 are combined.
The fixed-side member 11 is a rectangular parallelepiped box made of heat-resistant resin and covered on five sides except for the bottom, as shown in FIG. That is, the fixed side member 11 is a box having a top surface, four side walls 14, and an open bottom side.
Since the top surface of the fixed member 11 constitutes the bottom surface of the test chamber 10 , the top surface of the fixed member 11 is hereinafter referred to as the bottom member 13 .
The fixed side member 11 is a box having a bottom member 13 and sidewalls 14 hanging downward from each side of the bottom member 13. The bottom surface of the box is an opening, and the inside is opened. is the cavity 87.

A through hole 15 is provided in the center of the bottom member 13 of the fixed member 11 .
Further, nozzles 37 and 38 protrude from the bottom member 13 of the fixed member 11 . The nozzles 37 and 38 are located on the left and right sides of the through hole 15 when viewed from the front.
One nozzle 37 is a blowing nozzle 37 and the opening at the tip functions as the air inlet 18 . The other nozzle 38 is a suction nozzle 38 with an opening at its tip functioning as an exhaust port 20 . Both the air introduction port 18 and the exhaust port 20 are opened in an oblique direction toward the center.

The moving-side member 12 is a box made of heat-resistant resin, the bottom side of which is open, and a cavity 42 is provided inside.
As shown in each drawing, the movable side member 12 has a shape in which a rectangular parallelepiped main box portion 22 and a cylindrical extension box portion 23 are connected.
As described above, the main body box portion 22 is a rectangular parallelepiped, has a top wall 25 and side walls 26 hanging down from each side of the top wall 25, and is open at the bottom.
A window 35 is provided on the side surface of the main body box portion 22 . The window 35 is transparent so that the inside can be observed.
The box extension 23 is cylindrical and has a top wall 27 and side walls 28 . The cross-sectional area of the extension box portion 23 is smaller than the cross-sectional area of the main box portion 22 .
The inside of the main body box portion 22 and the inside of the extension box portion 23 communicate with each other to form one cavity.
A through hole 30 is provided in the top wall 27 of the extension box portion 23 .

A fastener 31 is attached to the top of the extension box portion 23 as shown in FIG. The fastener 31 is a ring partially cut to provide a gap 33 and has a through hole 32 in the center. A guide projection (not shown) is provided inside the through hole 32 .
One opposing piece 91 of the gap 33 portion of the fastener 31 has a through hole in the tangential direction, and the other opposing piece 92 has a screw hole. A screw 21 is inserted through the through hole and the screw hole.
Therefore, by tightening the screw 21, the distance between the opposing pieces 91 and 92 is narrowed, and the diameter of the through hole 32 is reduced.

The planar cross-sectional shape of the fixed side member 11 and the planar cross-sectional shape of the main body box portion 22 of the movable side member 12 are both quadrilaterals and similar shapes as shown in FIG. 3(a). The plane cross-sectional area of the main body box portion 22 of the movable-side member 12 is larger than the plane cross-sectional area of the fixed-side member 11 .
Expressed functionally, the main body box portion 22 of the movable side member 12 is sized to completely cover the fixed side member 11 . That is, the inner square, which is the cross-sectional shape of the cavity 42 formed by the side wall 26 of the main body box portion 22 of the movable member 12, is larger than the outer square formed by the contour of the side wall 14 of the fixed member 11. FIG.
When the fixed member 11 is covered with the movable member 12 while the central axes of the fixed member 11 and the movable member 12 are aligned, the outer surface of the side wall 14 of the fixed member 11 and the side wall of the movable member 12 are formed. A gap 8 (see FIG. 4) of about 1 mm to 5 mm is created between the inner surface of 26 .

The test chamber forming part 5 has a fixed side member 11 and a movable side member 12 covering the upper part thereof, and a test chamber 10 is formed by an inner cavity.
That is, the test chamber 10 is defined by the bottom member 13 of the fixed member 11 , the top portion of the movable member 12 , and the inner surface of the movable member 12 .
The top portion of the moving side member 12 is the entire top portion of the moving side member 12. Specifically, the top wall 25 of the main body box portion 22 of the moving side member 12 and the top wall 27 of the extension box portion 23 is.
The inner side surfaces of the movable side member 12 are the side wall 26 of the main box portion 22 and the side wall 28 of the extension box portion 23 .
The fixed side member 11 is nested in the movable side member 12 . Therefore, the entire length of the test chamber 10 expands and contracts depending on the relative positions of the fixed-side member 11 and the movable-side member 12 .

Next, the external force application device 3 will be described.
The external force application device 3 is a tensile tester. The external force applying device 3 has a base portion 40 and a portal frame 41 as shown in FIG.
The gate-shaped frame 41 has a guide rail (not shown), and the lift bar 43 is engaged with the guide rail of the gate-shaped frame 41 .
As shown in FIG. 6 and the like, an upper rod 45 is provided below the lift bar 43 , and an upper grip (moving side holding member) 46 is provided at the tip of the upper rod 45 .
The upper gripper 46 moves vertically to pull the device under test 200, and is a moving side holding member.

A lower rod 47 is provided on the base portion 40 , and a lower gripper (fixed side holding member) 50 is provided at the tip of the lower rod 47 .
The lower gripper 50 is fixed to the base portion 40 and is a fixed-side holding member.
The external force applying device 3 includes a moving device that moves the upper gripper 46 vertically by raising and lowering the lifting bar 43 and an elongation meter that detects the amount of movement of the gripper, as in a known tensile tester. (neither shown).
The external force applying device 3 also has a load meter (not shown) for detecting a tensile load.
As a configuration unique to this embodiment, a guide groove 83 is formed in the upper rod 45 from which the upper gripper 46 hangs as shown in FIG. The guide groove 83 is a key groove-shaped groove.

Next, the positional relationship between the test chamber forming part 5 and the external force application device 3 will be described.
The external force applying device 3 is mounted on the mounting table 7 as shown in FIG.
The test chamber component 5 of the environmental test apparatus 2 is installed in a space surrounded by the portal frame 41 of the external force applying apparatus 3 .
The upper gripper (holding member) 46 and the lower gripper 50 are both arranged in the test chamber 10 as shown in FIG.
More specifically, the stationary member 11 is fixed to the lower rod 47 of the external force applying device 3 . That is, the lower rod 47 of the external force applying device 3 is inserted through the through hole 15, and the fixed side member 11 and the lower rod 47 are coupled at this portion by a connecting member (not shown).
Since the lower gripper 50 is fixed to the tip of the lower rod 47 , in the test apparatus 1 of this embodiment, the fixed member 11 is fixed to the lower gripper 50 on the fixed side via the lower rod 47 . there is

Further, the moving side member 12 is engaged with the upper rod 45 of the external force applying device 3 . That is, the upper rod 45 of the external force applying device 3 is inserted through the through hole 30 of the movable member 12 to establish an engaging relationship.
Since the upper gripper 46 is provided at the tip of the upper rod 45 , the moving side member 12 is attached to the upper gripper 46 on the moving side via the upper rod 45 in the test apparatus 1 of this embodiment.

Further, as shown in FIG. 1 , the upper rod 45 is also inserted through the through hole 32 of the fastener 31 provided in the movable member 12 .
As described above, the through hole 32 of the fastener 31 has a guide projection, and the guide projection is engaged with the guide groove 83 .
Therefore, the moving-side member 12 has a degree of freedom only in the vertical direction along the upper rod 45 and cannot rotate with respect to the upper rod 45 .
In relation to the upper gripper 46 , the movable member 12 is non-rotatably and linearly movably engaged with the upper gripper 46 via the upper rod 45 .

As is well known, the axis from the upper rod 45 to the upper gripper 46 and the axis from the lower rod 47 to the lower gripper 50 coincide.
Also, the moving-side member 12 is non-rotatable with respect to the upper gripper 46 . Similarly, the stationary member 11 is non-rotatable with respect to the lower gripper 50 .
Therefore, the posture of the movable member 12 and the posture of the stationary member 11 in the rotation direction do not change regardless of the distance between them.
When the test chamber forming part 5 is attached to the external force applying device 3, there is a certain gap 8 between the movable side member 12 and the fixed side member 11 as shown in FIG. The gap 8 is large enough to prevent contact between the movable member 12 and the fixed member 11 even if the movable member 12 shakes to some extent, and is large enough for gas to pass through.
As described above, since the orientation of the movable member 12 and the rotational orientation of the fixed member 11 do not change, the gap 8 between them is always secured even if the movable member 12 is moved up and down.

Next, the air conditioning system of the test apparatus 1 will be explained.
As shown in FIGS. 4 and 5, the test apparatus 1 has a main flow path 51 for circulating air between the air conditioning section 6 and the test chamber 10, and a bypass flow path 52 for circulating air only in the air conditioning section 6. ing. It also has a dry air additional channel (dry gas supply means) 53 for introducing dry air into the main channel 51 . Further, a vacuum pipe 57 is provided to reduce the pressure around the main flow path 51 in order to insulate the main flow path 51 from the outside.

The air conditioning section 6 of the present embodiment is configured by an air conditioning equipment housing section 60, a blower 55, and piping connecting these.
The air conditioner housing portion 60 has an air return port 61 and an air outlet port 62, and an air flow path 56 is formed between them. A humidifier 63 , a cooler 65 and a heater 66 are installed in the air flow path 56 .

A test chamber forming part 5 and an air conditioning part 6 that constitute the environmental test apparatus 2 are connected by piping.
The main flow path 51 is a flow path through which air whose temperature etc. is controlled passes, from the exhaust port 20 of the test chamber forming part 5 to the air inlet 18 via the air conditioner housing part 60 and the blower 55. A series of flow paths.
That is, the exhaust port 20 of the test chamber forming section 5 and the air return port 61 of the air conditioner housing section 60 are connected by a return pipe 70 . Further, the air outlet 62 of the air conditioner housing portion 60 is connected to the suction port of the blower 55 by an intermediate pipe 58 . Also, the discharge port of the blower 55 is connected to the air inlet 18 by a forward pipe 72 .
Therefore, the test room 10 of the test room forming section 5 and the air conditioning section 6 form a series of circulation channels.

A bypass flow path 52 connects between the outgoing pipe 72 and the return pipe 70 of the main flow path 51 . Dampers 77 and 78 are provided at the branch portions of the bypass channel 52, respectively. The dampers 77 and 78 switch between a circuit for circulating air between the test chamber 10 and the air conditioning unit 6 and a circuit for circulating air only by the air conditioning unit 6 .
That is, air circulates between the air conditioning unit 6 and the test chamber 10 by setting the dampers 77 and 78 to open the main channel side and close the bypass channel 52 as shown in FIG.
On the other hand, as shown in FIG. 5, the dampers 77 and 78 block the main channel side and open the bypass channel 52, so that the air circulates only within the air conditioning unit 6. FIG.

The dry air addition flow path 53 is composed of a compressor 73 , an air dryer 75 and a flow control valve 86 . Air dryer 75 is a filter that removes water vapor. The structure of the air dryer 75 is not limited, and may be of an adsorption type, or of cooling air to remove water vapor.
The dry air additional flow path 53 is connected to a part of the main flow path 51 and always supplies a constant amount of dry air to the main flow path 51 .

In this embodiment, part of the main flow path 51 has a vacuum insulation structure. That is, the piping near the exhaust port 20 of the main flow path 51 and the piping near the air inlet 18 have a double pipe structure, and the surrounding pipe 95 surrounds the air pipe 93 through which temperature-controlled air flows.
A closed space 96 is provided between the air tube 93 and the surrounding tube 95 .
In this embodiment, a vacuum pipe 57 is connected to this closed space 96 . A vacuum pipe 57 is connected to a vacuum pump 97 . Thus, in this embodiment, the vacuum pump 97 is connected to the sealed space 96 via the vacuum pipe 57, and the pressure between the air pipe 93 and the surrounding pipe 95 is reduced.

Next, a specific piping route will be described.
In this embodiment, as shown in FIG. 2 , the piping is divided into an external force applying device side piping 100 and an air conditioning unit side piping 101, which are connected by pipe joints 80 and 81. FIG.
As shown in FIG. 2, the external force applying device side pipe 100 is composed of vertical pipes 102a and 102b and horizontal pipes 103a and 103b connected thereto.
In this embodiment, a blowout nozzle 37 and a suction nozzle 38 are formed at the ends of the vertical pipes 102a and 102b of the external force applying device side pipe 100, and the blowout nozzle 37 and the suction nozzle 38 are formed from the bottom member 13 of the fixed side member 11. stands out. The opening at the tip of the blow nozzle 37 functions as the air inlet 18 , and the opening at the tip of the suction nozzle 38 functions as the exhaust port 20 .
The vertical pipes 102 a and 102 b forming a forward-side pipe line connected to the air inlet 18 and a return-side pipe line connected to the exhaust port 20 are both pulled out to the bottom side of the bottom member 13 .

In the present embodiment, the pipeline on the going side toward the test chamber 10 (a part of the going pipeline 72) and the pipeline on the returning side to the air conditioning unit 6 (a part of the return pipeline 70) are both connected to the bottom member 13. It hangs vertically from the bottom (vertical pipes 102a, 102b).
Then, it bends vertically at a height near the base portion 40 and extends rearward in the horizontal direction (horizontal pipes 103a and 103b). Horizontal pipes 103 a and 103 b belonging to the external force applying device side pipe 100 extend to a position slightly protruding from the base portion 40 . It is connected to the air conditioner side pipe 101 by pipe joints 80 and 81 .
In this embodiment, the external force application device side pipe 100 has a double pipe structure and is vacuum-insulated. A heat insulating material is wrapped around the pipe 101 on the side of the air conditioner.

Next, the operation of the test device 1 of this embodiment will be described.
When a tensile test is performed using the test apparatus 1 of this embodiment, the movable member 12 is lowered as shown in FIG. Build 10.
On the other hand, when the device under test 200 is attached, the movable member 12 is retracted upward along the upper rod 45 and removed from the fixed member 11 as shown in FIG.

When performing a tensile test using the test apparatus 1 of this embodiment, the test object 200 is formed into a predetermined shape. For example, it is molded into the shape of a dumbbell-shaped specimen.
Then, the upper gripper 46 and the lower gripper 50 are exposed, and both ends of the device under test 200 are gripped by the upper gripper 46 and the lower gripper 50 .
Specifically, the fastener 31 is loosened to release the movable member 12 from the upper rod 45 . Then, the movable member 12 is manually moved upward, and the fastener 31 is tightened to fix the movable member 12 upward as shown in FIG.

As a result, as shown in FIG. 8, the upper gripper 46 and the lower gripper 50 are exposed.
That is, in this embodiment, the highest position of the stationary member 11 is the bottom member 13 , and the lower grip 50 protrudes from the bottom member 13 . Therefore, in the lower portion of the test apparatus 1, the lower gripper 50 is at the highest position, and there is no wall or the like that blocks the lower gripper 50 around it. Therefore, when the movable member 12 is moved upward, the lower gripper 50 is exposed in an exposed state.

On the other hand, even if the movable member 12 is moved upward, the upper gripper 46 remains in its original position, so there is no wall or the like to block the upper gripper 46 around the upper gripper 46 . Therefore, when the movable member 12 is moved upward, the upper gripper 46 is also exposed.
According to this embodiment, both the upper gripper 46 and the lower gripper 50 are in an exposed state, and there are no obstacles in the surroundings.
Then, the movable member 12 is moved downward to cover the fixed member 11 with the hollow portion of the movable member 12 as shown in FIG. 6 to construct the test chamber 10 inside.

Subsequently, the air conditioning unit 6 is driven to introduce conditioned air into the test chamber 10 . When conducting a low-temperature test, dry air is introduced from the dry air additional flow path 53 into the main flow path 51 .
In the test chamber 10 , conditioned air is introduced from the blow nozzle 37 . Here, in this embodiment, the blow nozzle 37 rises from the bottom member 13 of the stationary member 11, and its opening (air inlet port 18) opens toward the center.
Therefore, the air is blown out with a horizontal component from a position higher than the bottom member 13 . Therefore, the temperature-controlled air is directly blown onto the device under test 200 .

The internal air is recovered from the exhaust port 20. - 特許庁
When a low-temperature test is performed here, dry air is introduced into the main flow path 51 as described above. Therefore, the air circulating in the main flow path 51 and the test chamber 10 becomes excessive, and the pressure inside the test chamber 10 tends to be positive.
On the other hand, there is a relatively large gap 8 between the fixed side member 11 and the movable side member 12 .
Therefore, excess air is discharged outside through the gap 8 . The air that passes through the gap 8 is mixed with dry air and contains a small amount of water vapor, so dew condensation and freezing are unlikely to occur. As the test is repeated and time elapses, much of the air in the test chamber 10 and the circulating air is replaced with dry air, so condensation and freezing are even less likely to occur.

Then, the external force applying device 3 is activated to raise the upper rod 45 at a constant speed to apply a tensile load to the device under test 200 .
For example, if the test object 200 is rubber, it will stretch as shown in FIG. 7 by receiving a tensile load.
In this embodiment, since the moving side member 12 is attached to the upper gripper 46 side, the moving side member 12 rises as the upper gripper 46 rises.
On the other hand, the fixed side member 11 has side walls 14 that hang downward from each side of the bottom member 13, and the side walls 26 of the upper movable side member 12 extend over a considerable length around the side walls 14. surrounding (see Figure 6).
Even if the movable member 12 rises as shown in FIG. 7, the overlapping relationship between the side surface of the fixed member 11 and the inner surface of the movable member 12 is maintained so that the test chamber 10 is not opened. is doing.

In addition, since various pipes are concentrated under the bottom member 13 of the fixed member 11, the pipes do not hit the movable member 12 and do not hinder the upward movement of the movable member 12.例文帳に追加

Finally, the device under test 200 breaks. Then, the relationship between the elongation of the device under test 200 and the load during that time is recorded.
In the test apparatus 1 of the present embodiment, the movable side member 12 of the test chamber constituting section 5 is engaged with the upper gripper 46 via the upper rod 45 . Therefore, when the upper gripper 46 is lifted, the movable member 12 is lifted and the test chamber 10 is extended.
In the test apparatus 1 of this embodiment, there is a gap 8 between the stationary member 11 and the movable member 12, and the two are substantially non-contact.
Further, since the movable member 12 has no degree of freedom in the rotational direction, the movable member 12 and the stationary member 11 do not come into contact with each other even during the rising process. Therefore, the movable member 12 rises smoothly, and noise is less likely to occur in the load meter.

As the device under test 200 extends, the movable member 12 rises, but during this time, the movable member 12 and the fixed member 11 are kept overlapping, and the test chamber 10 is not opened.
That is, the fixed side member 11 employed in this embodiment has side walls 14 hanging downward from each side of the bottom member 13 . Therefore, the fixed member 11 has an upwardly convex shape and has an extended portion on the lower side. Therefore, there is a long overlapping margin between the side wall of the movable side member 12 and the side wall 14 of the fixed side member 11 .
Therefore, even if the movable member 12 is lifted, the movable member 12 and the fixed member 11 are kept overlapping each other.

When the device under test 200 is broken, the movable side member 12 is raised again as shown in FIG.
During this time, the dampers 77 and 78 are switched as shown in FIG. Therefore, the temperature-controlled air can be accumulated in the air conditioning unit 6 .

In the embodiment described above, among the series of air-conditioning pipes, the external force applying device side pipe 100 has a vacuum insulation structure. This aspect is recommended in that the heat insulating piping can be passed through the narrow space between the test chamber 10 and the base section 40 .
However, the present invention is not limited to this structure, and a normal heat insulating structure such as wrapping a heat insulating material may be employed.

In the embodiment described above, substantially the entire circumferences of the upper gripper 46 and the lower gripper 50 are exposed by raising the moving-side member 12 . This mode is the most recommended, but it may be partially hidden.
Considering ease of work, it is desirable that at least the front sides of the upper gripper 46 and the lower gripper 50 are exposed.

In the embodiment described above, the movable member 12 and the stationary member 11 are completely out of contact. That is, the peripheral surface of the stationary member 11 does not come into contact with the inner surface of the movable member 12 at any point. However, there may be a partial contact portion as long as it does not hinder the movement of the movable member 12 up and down.

In the embodiment described above, the cross-sectional shape of the stationary member 11 is convex upward, and the extension portion is provided on the lower side. With this configuration, even if the movable member 12 is moved, the overlapping relationship between the movable member 12 and the fixed member 11 is maintained for a long time, which is desirable. Further, according to this aspect, when the movable member 12 is pulled up, the lower gripper 50 is exposed, and there are no obstacles around.
However, the present invention is not limited to this configuration. For example, as shown in FIG.
9(b), the movable side member 12 is inserted into the recessed space formed by the fixed side member 11, and the movable side member 12 is moved. may be surrounded by the fixed side member 11 .
Furthermore, as shown in FIG. 9(c), the stationary member 11 may be plate-shaped.

The shapes of the fixed side member 11 and the movable side member 12 are not limited to quadrilaterals, and may be cylindrical as shown in FIG. 9(d).

In the above-described embodiment, the upper rod 45 is provided with the key groove-like guide groove 83 to prevent the moving member 12 from rotating. may be A linear guide such as a dovetail groove may also be used. Also, the guide structure may be omitted.
In the embodiment described above, the movable member 12 is manually moved up and down, but it may be moved up and down by power.

In principle, the test apparatus 1 described above is tested by placing the device under test 200 in the test chamber 10, but the tensile test may be performed with the moving-side member 12 raised. That is, according to the test apparatus 1 of this embodiment, a tensile test can be performed even in an atmospheric environment.

In the test apparatus 1 described above, the air in the test chamber 10 is circulated through the air conditioning unit 6, but the air applied to the device under test 200 may be discarded without being circulated.
In the test apparatus 1 described above, the pipe was connected to the bottom member 13 of the fixed-side member 11, but the connection location is not limited to this. For example, in the test apparatus 1 of the form shown in FIGS. 9A and 9B, a pipe may be connected below the side wall 14 of the stationary member 11 .
In the test apparatus 1 described above, the blow nozzle 37 and the suction nozzle 38 are configured to protrude from the bottom member 13 of the fixed member 11, but may be configured not to protrude.

The environmental test device 2 employed in the test device 1 described above is an environmental test device 2 used in combination with an external force applying device 3, and the external force applying device 3 detachably holds a device under test 200. A test chamber 10 having a holding member (gripping tool) and capable of forming a desired environment, an air inlet 18 for introducing conditioned air into the test chamber 10, and the test chamber 10 The test chamber 10 has an exhaust port 20 for discharging the internal air, and the test chamber 10 has a through hole 15 that communicates between the inside and the outside. The environmental test apparatus 2 for applying an external force to an object 200 includes a fixed side member 11 having a bottom member 13 forming the bottom surface of the test chamber 10, and a fixed side member 11 having a top portion and a side surface and having an open lower portion and a hollow portion inside. The test chamber 10 is defined by at least a portion of the fixed member 11, the top portion, and at least a portion of the side surface, and the movable member 12 is connected to the fixed side. The test chamber 10 can be expanded and contracted by moving with respect to the member 11, the air inlet port 18 and the exhaust port 20 are provided in the fixed member 11, and the movable member 12 is attached to the fixed member 11. The environmental test apparatus 2 is characterized in that at least part of the holding member is exposed when removed from the side member 11 .

Adopting the configuration of the environmental test apparatus 2 of this embodiment facilitates attachment and detachment of the device under test 200 . Further, according to this aspect, a tensile test or the like can be performed even in an atmospheric environment.

The environmental test apparatus 2 of the embodiment described above is characterized in that a nozzle protrudes from the bottom member 13 and at least one of the air inlet 18 and the exhaust port 20 is formed by the nozzle.

As described above, the environmental test device 2 is used in combination with the external force application device 3 . Here, when the lower gripper 50 of the external force applying device 3 is put into the test chamber 10 as shown in each figure, the height of the test object 200 is the height of the lower gripper 50 than the fixed side member 11. , and is positioned away from the bottom member 13 in the height direction. In particular, the portion of the device under test 200 to be fractured is positioned considerably higher than the bottom member 13 .
Therefore, if the air inlet 18 is directly opened in the bottom member 13, the air blown from the air inlet 18 is directly applied to the device under test 200 because there is a distance between the air inlet 18 and the device under test 200. becomes difficult. Further, if the air inlet 18 is directly opened upward in the bottom plate, the lower gripper 50 may act as a barrier, making it difficult to apply the air directly to the device under test 200 .

Therefore, in the environmental test apparatus 2 of the present embodiment, the nozzles 37 and 38 are projected from the bottom member 13, and at least one of the air inlet 18 and the exhaust port 20 is formed by the nozzles 37 and 38.
Further, in the above-described embodiment, the nozzles 37 and 38 are opened in an oblique direction toward the center.
According to this aspect, the air introduction port 18 and the like can be opened upward. Also, the air blown from the air inlet 18 can be directly applied to the device under test 200 .

Reference Signs List 1 test apparatus 2 environmental test apparatus 3 external force application apparatus 5 test chamber structure 8 gap 10 test chamber 11 fixed side member 12 movable side member 13 bottom member 14 side wall (peripheral wall)
15 through hole 18 air inlet 20 exhaust port 30 through hole 37 blow nozzle 38 suction nozzle 46 upper grip (moving side holding member)
50 lower grip (fixed side holding member)
51 main channel 52 bypass channel 53 dry air additional channel (dry gas supply means)
57 vacuum pipe 83 guide groove

Claims (10)

An environmental test device used in combination with an external force applying device,
a test room capable of forming a desired environment, an air inlet for introducing conditioned air into the test room, and an exhaust port for discharging the air in the test room; An environmental test apparatus having a through hole communicating inside and outside, and applying an external force from the external force applying device to the test object in the test chamber via the through hole,
a fixed side member having a bottom member forming the bottom surface of the test chamber; and a movable side member having a top portion and a side surface, a lower side opening, and a hollow portion inside,
At least a portion of the stationary member, the top portion, and at least a portion of the side surface define the test chamber,
The test chamber can be expanded and contracted by moving the moving-side member with respect to the fixed-side member,
The air inlet and the air outlet are provided in the stationary member ,
An environmental test apparatus , wherein at least most of the space between the moving side member and the fixed side member is in a non-contact state, and there is an air-permeable gap therebetween. 2. The environment according to claim 1, wherein a pipe leading to at least one of said air inlet and said exhaust port passes under said fixed member and reaches at least one of said air inlet and said exhaust port. test equipment. The fixed-side member has the bottom member as a top surface, has a peripheral wall extending in a direction opposite to the moving-side member around the bottom member, and has a cavity surrounded by the bottom member and the peripheral wall. The environmental test apparatus according to claim 1 or 2, characterized in that: 4. The environmental test apparatus according to any one of claims 1 to 3 , wherein the upper portion of said movable side member has a smaller cross-sectional area in plan view than other portions of said movable side member. 5. A test apparatus comprising: the environmental test apparatus according to claim 1 ; and an external force application apparatus for applying an external force to the test object. A test apparatus having an external force applying device that applies an external force to a test object and a test chamber capable of forming a desired environment,
The external force applying device has a pair of holding members that hold the test object, one of the holding members is a fixed side holding member fixed to the lower part, and the other of the holding members moves vertically. In the test device that is the moving side holding member,
Having an air inlet for introducing conditioned air into the test chamber and an exhaust port for discharging the air in the test chamber,
a fixed side member having a bottom member forming the bottom surface of the test chamber; and a movable side member having a top portion and a side surface, a lower side opening, and a hollow portion inside,
At least a portion of the stationary member, the top portion, and at least a portion of the side surface define the test chamber,
The fixed side member is fixed to the fixed side holding member side, the moving side member is attached to the moving side holding member side,
The test chamber can be expanded and contracted by moving the moving-side holding member,
The air inlet and the air outlet are provided in the stationary member ,
A test apparatus , wherein the moving-side member is attached to the moving-side holding member so as to be able to move up and down. A test apparatus having an external force applying device that applies an external force to a test object and a test chamber capable of forming a desired environment,
The external force applying device has a pair of holding members that hold the test object, one of the holding members is a fixed side holding member fixed to the lower part, and the other of the holding members moves vertically. In the test device that is the moving side holding member,
a fixed side member having a bottom member forming the bottom surface of the test chamber; and a movable side member having a top portion and a side surface, a lower side opening, and a hollow portion inside,
At least a portion of the stationary member, the top portion, and at least a portion of the side surface define the test chamber,
At least most of the space between the moving-side member and the fixed-side member is in a non-contact state and there is a gap that allows air to pass therebetween,
The fixed side member is fixed to the fixed side holding member side, the moving side member is attached to the moving side holding member side,
A test apparatus, wherein the test chamber can be expanded and contracted by moving the movable-side holding member. 8. The test apparatus according to claim 7, further comprising dry gas supply means, wherein dry gas is introduced into said test chamber from said dry gas supply means, and air in said test chamber leaks through said gap. 9. The test apparatus according to claim 6 , wherein at least part of said holding member is exposed when said movable member is removed from said stationary member. 10. The test apparatus according to any one of claims 6 to 9, wherein the moving-side member is non-rotatably attached to the moving-side holding member.

Images