JP2013072812A - Environmental test device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an environmental test device capable of easily attaching an outer frame member during manufacturing.SOLUTION: In a structure of an outer frame member 7 configuring a top surface and a side face of an outer housing, the outer frame member 7 is formed by mechanically bonding two frame forming members 8a and 8b, and has a structure formed such that junctions 16 and 20 of the frame forming members 8a and 8b are both bent twice, the junctions 16 and 20 are provided with vertical wall parts 17 and 21 projected to an inner side of the outer frame member 7 and horizontal wall parts 18 and 22 both bent in the same direction more on a distal end side than the vertical wall pats 17 and 21, the vertical wall parts 17 and 21 with each other and the horizontal wall parts 18 and 22 with each other of the frame forming members 8a and 8b are matched, a seal part 14 is interposed between the vertical wall parts 17 and 21, and matched parts of the horizontal wall parts 18 and 22 with each other are bonded by a fastening element 27 further.

Description

  The present invention relates to an environmental test apparatus that can expose a device under test to a desired environment, and more particularly to a structure of an outer frame member that forms an outline of the environmental test apparatus.

One of the methods for evaluating the performance of products and the like is an environmental test. In the environmental test, a product or the like is placed in a specific environment and a change in performance or the like is observed.
The environmental test apparatus can maintain the test space at a desired temperature and humidity, and can form various environments such as a high temperature environment, a low temperature environment, a high humidity and a low humidity.
That is, the environmental test apparatus can install a product in a test chamber and evaluate the performance of the product under various environments.

Conventionally, a test chamber of an environmental test apparatus is covered with a double casing, which is an inner casing and an outer casing surrounding the outer casing.
In many cases, the environmental test apparatus is tested in an environment deviating from the environment outside the environmental test apparatus, for example, under conditions such as high temperature and high humidity. In such a case, the temperature inside the environmental test apparatus becomes higher than the temperature outside the test apparatus. In order to prevent the temperature in the test chamber from escaping to the outside of the environmental test equipment due to this temperature difference, a heat insulating member is interposed between the inner casing and the outer casing covering the test chamber. Thus, a sealed heat insulating space is formed (for example, Patent Document 1).

JP 2010-256019 A

For example, in the case of making a frame body surrounded by three surfaces, it is often formed by pressing a single metal plate into a developed shape and bending it.
However, the outer casing used in the environmental test apparatus has a vertical, horizontal, and height of 1 m or more in size, so a remarkably large metal plate is required to create a developed shape with a single metal plate. Necessary. Such a large metal plate is difficult to obtain. Therefore, in general, a plurality of metal plates are joined to form one frame. Therefore, a frame made of two or more metal plates is used for a part or all of the outer casing of the environmental test apparatus.
In the method for joining metal plates in an environmental test apparatus, the vicinity of the end of the metal plate is bent at 90 degrees to form a joined portion. Then, spot welding is performed by overlapping the joints. And it adhere | attaches with the aluminum tape so that the overhang | projection direction edge part of two joining parts may be covered, and also the both ends of the said aluminum tape are sealed with the sealing material.

  Here, the reason why the joint portion of the metal plate is bonded with aluminum tape and both ends of the aluminum tape are sealed with a sealing material will be described. It is an environmental test apparatus using a frame body that is simply spot-welded. This is because when an environmental test is performed, air enters and exits between the heat insulating space and the outside through a gap between the joint portions of the metal plate. Specifically, when an environmental test is performed under a high temperature condition, heat is stored inside the heat insulating material by heat transmitted from the inner casing. When heat is stored, the air in the heat insulating space expands and is discharged to the outside through the gap between the joints of the outer casing. Conversely, when an environmental test is performed under a low temperature condition, the air in the heat insulation space is compressed by the cold air of the inner casing, and the outside air enters the heat insulation space from outside through the gap between the joints.

  For example, when an environmental test is performed by alternately switching a high temperature condition and a low temperature condition as in a durability test, moisture in the air in the heat insulation space may condense due to the entry and exit of air in the heat insulation space. When condensation occurs, the heat insulating performance of the heat insulating material may decrease, or the water may be transferred to the outer surface of the inner housing and accumulated in the lower portion of the heat insulating space. In such a case, the test environment in the test chamber may be disturbed. Therefore, in general, when forming the outer frame, not only spot welding, but also bonding the metal plate joints with aluminum tape, and sealing both ends of the aluminum tape with a sealing material improves sealing performance. It is increasing.

  However, in this joining method, it takes time because the end portions in the extending direction of the two joining portions are bonded with the aluminum tape along the extending direction of the joining surface. In addition, the overhang area of the joint portion is small due to restrictions on the installation space of the outer casing. Therefore, in order to ensure the sealing property, it is necessary to seal both ends of the aluminum tape with the sealing material as described above, and it is necessary to cover with a large amount of the sealing material. That is, when a semi-liquid sealing material is used, it takes time for the sealing material to solidify.

  Then, inventors considered the method of joining the junction parts of a metal plate, without using an aluminum tape. Then, using a pop rivet, an environmental test apparatus having a structure in which the joint portions of the metal plates are mechanically joined to each other was manufactured as a prototype. Unlike spot welding, pop rivets can be joined without heating, and can be easily joined and have high reliability.

  Specifically, the frame 101 forming the outer casing of the prototype environmental test apparatus is configured by two outer forming members 102a and 102b as shown in FIG. The outer shell forming members 102 a and 102 b are formed of a plate-like metal plate as in the conventional case, and each have a main body portion 103 and a joint portion 105 bent from an end portion of the main body portion 103. A known pop rivet 106 is driven and joined from the inside of the frame body 101 to the joining portion 105a of the outer shell forming member 102a and the joining portion 105b of the outer shell forming member 102b. Paying attention to the joining method, the joints 105a and 105b are formed by bending the vicinity of the end portions of the outer shell forming members 102a and 102b at 90 degrees. Then, after applying a fluid sealing material to one outer periphery of the joint 105, the joints 105a and 105b are overlapped. And joining part 105a, 105b is joined using the pop rivet 106. FIG. Thereafter, a liquid sealing material is applied to the exposed surface of the pop rivet 106.

In the prototype environmental test apparatus, the joining portions 105a and 105b of the outer shell forming members 102a and 102b can be joined without using an aluminum tape, so the step of attaching the aluminum tape can be omitted, and workability is improved as compared with the conventional joining method. Improved.
However, since the outer shape of the outer casing is large as described above in the environmental test apparatus, and the outer shape of the frame body 101 forming part or all of the outer casing is large, an operator enters the inside of the frame body 101 and forms the outer shell from the inside. It is necessary to drive the pop rivet 106 into the joint portions 105a and 105b of the members 102a and 102b. However, as described above, the joint portion 105 has a small overhanging area due to restrictions on the installation space of the outer casing 101. Therefore, when the worker enters the inside of the frame body 101 and drives the pop rivet 106 into a small overhanging area, the operator's head or the like comes into contact with a part of the frame body 101 and the workability is not sufficient.
In addition, when the pop rivet 106 is driven by the sealing material applied to the joint surfaces of the joint portions 105a and 105b, the joint surfaces of the joint portions 105a and 105b may slide along the joint surface, and positioning is difficult. It was.

  Therefore, the present invention solves the above-described problems, and an object of the present invention is to provide an environmental test apparatus that can easily create an outer casing at the time of manufacture.

  The invention according to claim 1 for solving the above-described problem is an environmental test apparatus for creating a desired test environment inside, an inner casing in which a device under test is arranged, and a part of the inner casing Or a heat insulating member that surrounds the whole, and an outer housing that is further outside the heat insulating member and surrounds part or all of the inner housing and the heat insulating member and constitutes part or all of the outer shell of the environmental test apparatus. In the environmental test apparatus having, there is a frame that forms at least the top and side surfaces of the outer casing, the frame is formed by mechanically joining a plurality of metal plates, At least the joint part of the two metal plates to be joined is bent twice or more, and the joint part has at least a vertical wall part projecting inside the frame body, and more than the vertical wall part. Folded in the same direction on the tip side The vertical wall portions and the horizontal wall portions of the two metal plates to be joined are matched with each other, a sealing material is interposed between the vertical wall portions, and the horizontal wall portion It is an environmental test apparatus characterized in that the matched parts are joined by a fastening element.

Here, the “fastening element” is a concept including screws, scissors, clips, and the like.
“Matched” here refers to a state in which they are oriented in the same direction and are close to or in contact with each other at a predetermined distance or less. That is, another member may be interposed between them. Note that the predetermined interval or less is 1 mm or less, and preferably 100 μm or less.
Here, “both in the same direction” represents a direction in which both are overlapped.

  According to the configuration of the present invention, the joint part of the two metal plates is both bent twice or more, and the joint part includes at least the vertical wall part protruding inside the frame body and the vertical part. And a lateral wall portion that is on the tip side of the wall portion and is bent in the same direction. That is, since the joint portion of the two metal plates is bent twice or more, the horizontal wall portion is inclined with respect to the vertical wall portion. The horizontal wall portions of the two metal plates are both bent in the same direction. Therefore, since the two metal plates can be prevented from separating by superimposing the joint portions of the metal plates at the time of joining the metal plates, the position can be easily fixed at the time of joining.

  According to the configuration of the present invention, the vertical wall portions and the horizontal wall portions of the two metal plates to be joined are matched with each other, and a sealing material is interposed between the vertical wall portions. That is, the sealing material is interposed between the vertical wall portions in a state where the vertical wall portions are matched and close to each other. For example, when a seal is formed using a sealing material having fluidity, the sealing material spreads over a wide range of the vertical wall portion by the close contact between the vertical wall portions. Therefore, the contact area between the vertical wall portion and the sealing material is increased, and the adhesive strength between the joint portions of the metal plate is improved. In other words, the sealing performance is improved. Also, the amount of seal material used can be reduced compared to the amount of conventional seal materials used. In other words, since the amount of the sealing material used may be small, the time for the sealing material to solidify can be shortened. That is, the construction time can be shortened.

  Furthermore, according to the structure of this invention, the site | part with which the said horizontal wall part matched was joined by the fastening element. That is, it is possible to join by the fastening element in a state where the lateral wall portions are matched and positioned. Further, since the lateral wall portions are matched with each other and are joined by the fastening element, it is possible to prevent the two metal plates from separating.

  Moreover, according to the structure of this invention, since the joint strength of the junction parts of a metal plate becomes the total strength of the adhesive strength of a sealing material, and the connection strength of a fastening element, intensity | strength improves compared with the past.

In the invention according to claim 2, the vicinity of the joint portion of the two metal plates forms the same plane,
The portion where the vertical wall portions are matched extends in a direction perpendicular to the plane,
2. The environmental test apparatus according to claim 1, wherein the portion where the vertical wall portions are matched and the portion where the horizontal wall portions are matched face each other in a direction orthogonal to each other.

  According to the configuration of the present invention, the portion where the vertical wall portions are matched extends in a direction orthogonal to the plane, and the portion where the vertical wall portions are matched matches the horizontal wall portion. The formed portions are oriented in directions orthogonal to each other. In other words, the portions where the lateral wall portions are matched with each other are parallel to the plane. Therefore, for example, by increasing the area of the horizontal wall portion, the assembling worker can easily attach the fastening element from the inside of the frame. In addition, the planar portions of the two metal plates are unlikely to become an obstacle when an operator attaches the fastening element, and workability is improved.

  The invention according to claim 3 is the environmental test apparatus according to claim 1 or 2, wherein the frame body includes a plurality of joint portions of the two metal plates.

  According to such a configuration, for example, even if the inner casing has a large capacity, it can be joined.

  Invention of Claim 4 has a corner | angular part which ties the site | part in which the said vertical wall part was matched, and the site | part in which the horizontal wall part was matched, and the sealing material is interposed in the said corner part. An environmental test apparatus according to any one of claims 1 to 3.

  According to this structure, it has a corner | angular part which ties the site | part in which the said vertical wall part was matched, and the site | part in which the horizontal wall part was matched, and the sealing material is interposed in the said corner part. For example, when a seal is formed using a fluid seal material at the time of joining, the seal material can be applied along the corners to check the application area of the seal material. Therefore, forgetting to apply the seal material can be prevented.

  According to the configuration of the present invention, workability is improved because the metal plate can be positioned and joined with the fastening element when joining the metal plates.

1 is a perspective view of an environmental test apparatus according to a first embodiment of the present invention. 1 is a conceptual diagram of an environmental test apparatus according to a first embodiment of the present invention. It is a perspective view showing the housing | casing part of FIG. It is a disassembled perspective view showing the outer frame member of FIG. It is a cross-sectional perspective view showing the outer frame member of FIG. It is an enlarged view showing the principal part of the outer frame member of FIG. It is an enlarged view showing the principal part of the outer frame member of FIG. FIG. 6 is a perspective view illustrating a joining portion in FIG. 5. It is explanatory drawing showing the attachment procedure of the outer frame member of FIG. 5, (a)-(d) is sectional drawing showing the connection site | part vicinity at the time of each operation | work in a general work progress. It is a perspective view showing the connection site | part vicinity of FIG.9 (b). It is a perspective view of the outer frame member concerning a 2nd embodiment of the present invention. It is a perspective view of the frame formation member of the outer frame member of FIG. It is a perspective view of the outer frame member concerning a 3rd embodiment of the present invention. It is a perspective view of the outer frame member concerning a 4th embodiment of the present invention. It is a perspective view of the outer frame member concerning a 5th embodiment of the present invention. It is a perspective view of the outer frame member concerning a 6th embodiment of the present invention. It is explanatory drawing showing the outer frame member of the modification of this invention, (a)-(d) is a figure showing the connection site | part vicinity. It is explanatory drawing showing the attachment procedure of the outer frame member of the modification of this invention, (a)-(e) is sectional drawing showing the connection site | part vicinity at the time of each operation | work in a general work progress. It is a principal part enlarged view of the prototype environmental test apparatus.

The environmental test apparatus 1 according to the first embodiment of the present invention will be described below.
As shown in FIG. 1, the environmental test apparatus 1 according to the present embodiment includes a casing unit 2 in which a test chamber 33 is built and an environmental test is performed, a control unit 30 that includes a control device that controls the test environment, and a casing unit. 2 has a storage section 31 for storing a part of the apparatus.
The environmental test apparatus 1 according to the present embodiment can maintain the test chamber 33 in which the test object in the housing 2 is arranged at a predetermined temperature and humidity for a long time.

First, the main configuration of the environmental test apparatus 1 will be described.
As shown in FIG. 2, the environmental test apparatus 1 includes a test chamber 33, a humidifier 37, a cooler 35, a heater 36, and a blower 38 in the housing 2. The test chamber 33 is a space covered by the housing unit 2. There is an air flow path 40 communicating with the test chamber 33, and a humidifier 37, a cooler 35, a heating device 36, and a blower 38 are provided in the air flow path 40 in that order from the air flow direction. Further, a temperature sensor 42 and a humidity sensor 43 are provided on the outlet side of the air flow path 40. In the environmental test apparatus 1, an air conditioner 45 is configured by the members in the air flow path 40 described above, the temperature sensor 42, and the humidity sensor 43.

  The humidifying device 37 is a combination of a humidifying heater 46 and a water pan 47, and heats the water in the water pan 47 with the humidifying heater 46 to evaporate it.

  The cooler 35 constitutes a known refrigeration cycle.

  The heating device 36 is a known electric heater.

  The temperature sensor 42 is a known temperature sensor.

  The humidity sensor 43 is not particularly limited as long as it can detect humidity. For example, a wet and dry bulb hygrometer can be adopted.

The environmental test apparatus 1 creates a desired temperature / humidity environment in the test chamber 33 by the built-in air conditioner 45.
That is, the air blower 38 is driven to introduce the air in the test chamber 33 into the air flow path 40, and the inside of the test chamber 33 is set to a desired temperature / humidity environment by heating, cooling, humidification, and dehumidification as necessary. .

When the eyes are moved to the housing part 2 located outside the test chamber 33, the housing part 2 surrounds the inner housing 3 and part or all of the inner housing 3 as in the prior art as shown in FIG. It has a heat insulating member 5 and an outer casing 6 that surrounds the outer side of the heat insulating member 5.
Hereinafter, the description will be made with attention paid to the configuration of the housing unit 2.

The inner casing 3 is a substantially rectangular parallelepiped casing, similar to the known inner casing, in which the test chamber 33 and the air conditioner 45 are installed.
The heat insulating member 5 uses a known heat insulating material. For example, glass wool can be used.
The outer casing 6 is a member that constitutes part or all of the outer casing of the environmental test apparatus 1 as shown in FIG. As shown in FIGS. 3 and 4, the outer casing 6 includes an outer frame member 7 that forms an outer casing of the bottom surface 60, the top surface 61, and the left and right side surfaces 62 and 63 of the casing 2. The present invention has a characteristic configuration in the structure of the outer frame member 7.

Hereinafter, the outer frame member 7 which is a feature of the present invention will be described.
In the following description, unless otherwise specified, the positional relationship between the top, bottom, left, and right is described based on the normal installation position (FIG. 3).
The outer frame member 7 (frame body) is formed by mechanically joining a plurality of frame forming members 8 by fastening elements 27 as shown in FIGS. In the present embodiment, the outer frame member 7 is formed by mechanically joining two frame forming members 8 having the same shape by fastening elements 27, and a storage space 15 surrounded by the two frame forming members 8. Have.

Each frame forming member 8 is formed by bending a single metal plate. The material of the frame forming member 8 is not particularly limited, and stainless steel or the like can be adopted.
The frame forming member 8 has a substantially U-shaped cross section as shown in FIG. Specifically, it has a main body portion 10 and projecting wall portions 11 and 12 that are bent from both ends of the main body portion 10 in a direction orthogonal to the main body portion 10.

Here, each frame forming member 8 has the same shape as described above. Therefore, in the following description of the frame forming member 8, only one frame forming member 8a will be described, and the other frame forming member 8b will be omitted because it is the same.
In the frame forming member 8a located on the left in FIG. 4, the overhanging wall portion 11 located at the upper end of the main body 10 is bent more than twice at the overhanging end portion of the overhanging wall portion 11 as shown in FIG. It has the joint part 16 formed by being formed. The joint portion 16 of the present embodiment is formed by bending the end portion of the overhanging wall portion 11 twice. Specifically, a vertical wall portion 17 that is bent from the base end side (main body portion 10 side) of the overhanging wall portion 11 in a direction orthogonal to the overhanging wall portion 11, and an end portion of the vertical wall portion 17 in the overhanging direction. The horizontal wall portion 18 is folded back in the direction intersecting the vertical wall portion 17. The vertical wall portion 17 is bent toward the inside (the storage space 15 side). The lateral wall portion 18 is bent in a direction approaching the main body portion 10.
The lateral wall portion 18 has a plurality of through holes 23, and the through holes 23 are arranged in the longitudinal direction 1 of the overhanging wall portion 11. The through hole 23 is a hole penetrating in the thickness direction of the lateral wall portion 18.
Further, a corner portion 25 is formed in the joint portion 16 by the vertical wall portion 17 and the horizontal wall portion 18.

  Further, in the frame forming member 8a located on the left side of FIG. 4, the overhanging wall portion 12 located at the lower end portion of the main body portion 10 is the end in the overhanging direction of the overhanging wall portion 12 like the overhanging wall portion 11 as shown in FIG. The joint 20 is formed by being bent at least twice. The joint portion 20 of this embodiment is formed by bending the end portion of the overhanging wall portion 12 twice. Specifically, the joint portion 20 of the present embodiment includes a vertical wall portion 21 bent in a direction orthogonal to the overhanging wall portion 12 from the base end side (main body portion 10 side) of the overhanging wall portion 12; The vertical wall portion 21 has a horizontal wall portion 22 that is bent in a direction intersecting the vertical wall portion 21 from an end portion in the protruding direction. The vertical wall portion 21 is bent toward the inside (the storage space 15 side). That is, the extending direction of the vertical wall portion 21 is directed in the direction approaching the vertical wall portion 17. The lateral wall portion 22 is bent in a direction away from the main body portion 10. That is, the extending direction of the lateral wall portion 22 is directed in a direction opposite to the extending direction of the lateral wall portion 18 located at the upper portion of the frame forming member 8a.

Further, a corner portion 26 is formed in the joint portion 20 by a vertical wall portion 21 and a horizontal wall portion 22. The angle α of the corner portion 26 composed of the vertical wall portion 21 and the horizontal wall portion 22 is set to 60 degrees to 120 degrees. 80 degrees to 100 degrees is preferable, and 90 degrees is particularly preferable.
The lateral wall portion 22 has a plurality of through holes 24, and the through holes 24 are arranged in the longitudinal direction 1 of the overhanging wall portion 12. The through hole 24 is a hole penetrating in the member thickness direction of the lateral wall portion 22. The positions of the through holes 24 of the frame forming member 8a are opposed to each other as will be described later when the two wall forming members 8a and 8b are assembled as shown in FIG. 5 and the horizontal wall portion 18 and the horizontal wall portion 22 are overlapped. The position corresponds to the through hole 23 of the frame forming member 8b.

  The length H1 (FIG. 6) from the outer surface (upper surface) of the overhanging wall portion 11 to the inner surface (lower surface) of the vertical wall portion 17 is from the inner surface (lower surface) of the overhanging wall portion 12 to the inner surface ( It is equal to the length H2 (FIG. 7) to the lower surface.

  The fastening element 27 is not particularly limited as long as the lateral wall portion 18 and the lateral wall portion 22 can be mechanically fixed. For example, screws, scissors, clips, and the like can be employed. It is preferable to use a rivet, and among them, a pop rivet is particularly preferable from the viewpoint that the operation can be completed only in one direction. In this embodiment, the fastening element 27 employs pop rivets.

  Then, the positional relationship of each member of the outer frame member 7 of the environmental test apparatus 1 in each posture will be described.

  As shown in FIG. 5, the two frame forming members 8 face each other when the main body portions 10 of the frame forming member 8 face each other in a state in which the joint portions 16 and 20 of the frame forming member 8 are overlapped to form the storage space 15. The overhanging wall portion 11 and the overhanging wall portion 12 are arranged on the same plane. Specifically, the two frame forming members 8 reverse the top and bottom of one frame forming member 8b to join the joint 16 of the frame forming member 8a, the joint 20 of the frame forming member 8b, and the frame forming member 8a. The joint 20 of the part 20 and the frame forming member 8b is superposed.

When attention is paid to the positional relationship between the joint 16 of the frame forming member 8a located in the upper part of FIG. 5 and the joint 20 of the frame forming member 8b, the outer surface (upper surface) of the overhanging wall 11 of the frame forming member 8a as shown in FIG. ) And the outer side surface (upper surface) of the overhanging wall portion 12 of the frame forming member 8b are flush with each other. The vertical wall portion 17 of the frame forming member 8 a and the vertical wall portion 21 of the frame forming member 8 b overlap with each other via the seal portion 14. The lateral wall portion 18 of the frame forming member 8a and the lateral wall portion 22 of the frame forming member 8b protrude in the same direction, and the inner side surface (lower surface) of the lateral wall portion 18 and the outer side surface (upper surface) of the lateral wall portion 22 overlap each other. Moreover, the corner | angular part 25 of the frame formation member 8a corresponds with the corner | angular part 26 of the frame formation member 8b. That is, the joint 16 of the frame forming member 8a and the joint 20 of the frame forming member 8b are matched.
The through hole 23 of the frame forming member 8 a and the through hole 24 of the frame forming member 8 b communicate with each other, and a known fastening element 27 is inserted across the through holes 23 and 24.

  On the other hand, the positional relationship between the joint portion 20 of the frame forming member 8a located in the lower part of FIG. 5 and the joint portion 16 of the frame forming member 8b is the joint of the joint portion 16 of the frame forming member 8a located above and the frame forming member 8b. Since it is the same except that the positional relationship of the unit 20 and the top and bottom are reversed, the description is omitted.

  Then, the joining method of the outer frame member 7 of the environmental test apparatus 1 in each posture will be described. The outer frame member 7 is formed by joining the frame forming member 8a and the frame forming member 8b as described above. However, the joint portion 16 and the frame forming member of the frame forming member 8a located in the upper part of FIG. Since the joining method of the joining part 20 of 8b is the same as the joining method of the joining part 20 of the frame forming member 8a and the joining part 16 of the frame forming member 8b located in the lower part of FIG. 5, the joining part of the frame forming member 8a. Only the joining method of the joining part 20 of 16 and the frame forming member 8b will be described, and the rest will be omitted.

First, a part of the joining part 16 of the frame forming member 8a and a part of the joining part 20 of the frame forming member 8b are overlapped (FIG. 9A).
At this time, the vertical wall portion 17 and the vertical wall portion 21 are arranged at a predetermined interval. That is, a gap 28 is formed between the vertical wall portion 17 and the vertical wall portion 21. A part of the lateral wall portion 18 is placed on the lateral wall portion 22.

Subsequently, a fluid sealing material is applied along the extending direction of the gap 28 (FIG. 9B). Specifically, a gel-like sealing material is injected along the corner portion 26.
At this time, as shown in FIG. 10, the corner portion 26 is filled with the liquid sealing raw material along the extending direction 1 of the gap 28. That is, the sealing material is applied on the lateral wall portion 22 in the gap 28.

Then, the vertical wall part 17 and the vertical wall part 21 are pressed in the direction in which the vertical wall part 17 of the frame forming member 8a and the vertical wall part 21 of the frame forming member 8b are close to each other (FIG. 9C).
At this time, the sealing raw material disposed in the gap 28 is pressed by the vertical wall portion 17 and the vertical wall portion 21 and is extended over a wide range of the vertical wall portion 17 and the vertical wall portion 21. That is, the sealing material disposed in the gap 28 spreads over a wide range of the vertical wall portion 17 and the vertical wall portion 21. Moreover, the space | interval of the clearance gap 28 has decreased extremely and the vertical wall part 17 and the vertical wall part 21 are overlapped. Therefore, the contact area between the vertical wall portions 17 and 21 and the seal material is increased, and the bonding strength between the joint portions 16 and 20 when the seal material is solidified is improved. In other words, the sealing performance is improved.
Further, the through hole 23 of the frame forming member 8a communicates with the through hole 24 of the frame forming member 8b.
The lateral wall portion 18 of the frame forming member 8a overlaps the lateral wall portion 22 of the frame forming member 8b. In other words, the lateral wall portion 18 is placed on the lateral wall portion 22.

Finally, a known fastening element 27 is inserted into the through holes 23 and 24 from the storage space 15 side (FIG. 9D), the seal raw material is solidified, and the seal portion 14 is formed. It is formed.
At this time, since the horizontal wall portions 18 and 22 face the direction intersecting the insertion direction of the fastening element 27, the fastening element 27 can be easily attached.

  According to the environmental test apparatus 1 of the present invention, the outer frame member 7 is obtained by superimposing the joint portions 16 and the joint portions 20 of the two frame forming members 8. That is, since the vertical wall portion 17 and the vertical wall portion 21 and the horizontal wall portion 18 and the horizontal wall portion 22 are overlapped, the movement in the vertically downward direction is restricted by the horizontal wall portion 22 coming into contact with the horizontal wall portion 22. Therefore, the position can be easily fixed at the time of joining.

  Further, according to the environmental test apparatus 1 of the present invention, since the vertical wall portion 17 and the vertical wall portion 21 are in close contact with each other, the sealing raw material spreads over a wide range of the joint surface between the vertical wall portion 17 and the vertical wall portion 21. The contact areas of the wall portion 17 and the seal portion 14, the vertical wall portion 21 and the seal portion 14 are increased, and the joint portion 16 of the frame forming member 8a, the joint portion 20 of the frame forming member 8b, and the joint portion of the frame forming member 8a. 20 and the bonding strength of the joint 16 between the frame forming member 8b are improved. In other words, the sealing performance is improved. Also, the amount of seal material used can be reduced compared to the amount of conventional seal materials used. In other words, since the amount of the sealing material used may be small, the time for the sealing material to solidify can be shortened. That is, the construction time can be shortened.

  Further, according to the environmental test apparatus 1 of the present invention, the joint strength between the joint portions 16 and 20 is the total strength of the adhesive strength of the solidified seal portion 14 and the connection strength of the fastening element 27, and thus is high strength. .

In the above-described embodiment, the outer frame member 7 is formed by directly joining the frame forming member 8a and the frame forming member 8b having the same shape, but the present invention is not limited to this, and the frame forming member 8a and the frame Another frame forming member may be interposed between the forming members 8b.
Specifically, it will be described as a second embodiment of the present invention. In addition, the thing similar to 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description.

  The outer frame member 50 of the second embodiment is formed by connecting two frame forming members 8a and 8b arranged in parallel with each other by frame forming members 51a and 51b as shown in FIG. Is formed. The outer frame member 50 includes the frame forming members 8a and 8b and the storage space 15 surrounded by the frame forming members 51a and 51b.

  The frame forming member 51 is a member that forms part of the top surface or the bottom surface of the outer frame member 50. As shown in FIG. 12, the frame forming member 51 includes a rectangular main body portion 55 and joint portions 56 and 57 formed by being bent twice or more in the vicinity of both end portions of the main body portion 55 in the width direction w. Have. In the present embodiment, the joint portion 57 is provided at one end portion (left end portion in FIG. 12) of the main body portion 55 in the width direction w, and the other end portion (right end portion in FIG. 12) in the width direction w of the main body portion 55. A joining portion 56 is provided.

The joint portion 57 of the present embodiment is substantially the same as the joint portion 20 of the first embodiment. That is, the joining portion 57 includes the vertical wall portion 21 bent in the direction orthogonal to the main body portion 55 from the width direction w end portion of the main body portion 55 of the frame forming member 51, and the protruding end of the vertical wall portion 21. The horizontal wall portion 22 is folded back in a direction intersecting the vertical wall portion 21 from the portion. Further, the lateral wall portion 22 is bent in a direction away from the center in the width direction of the main body portion 55.
The joint portion 56 of the present embodiment is substantially the same as the joint portion 16 of the first embodiment. That is, the joining portion 56 includes the vertical wall portion 17 that is bent in the direction orthogonal to the main body portion 55 from the width direction w end portion of the main body portion 55 of the frame forming member 51, and the extending direction end of the vertical wall portion 17. The horizontal wall portion 18 is folded back in the direction intersecting the vertical wall portion 17 from the portion. Further, the lateral wall portion 18 is bent toward the center in the width direction of the main body portion 55.
That is, the extending directions of the lateral wall portions 22 and 18 of the joint portions 56 and 57 are the same direction.

  Then, the positional relationship of each member of the outer frame member 50 of the environmental test apparatus in each posture will be described.

As shown in FIG. 11, the outer frame members 50 are arranged in parallel so that the main body portions 10 of the two frame forming members 8 and the main body portions 55 of the two frame forming members 51 face each other. A square is formed.
The two frame forming members 51 are arranged such that the main body portions 55 of the frame forming member 51 face each other in a state where the joint portions 16 and 20 of the frame forming member 8 are overlapped to form the storage space 15.

  Specifically, of the two frame forming members 51, one frame forming member 51b is arranged with its top and bottom reversed. And in the frame formation member 51a located in the upper part of FIG. 11, the junction 57 of the frame formation member 51a and the junction 16 of the frame formation member 8a, the junction 56 of the frame formation member 51a and the junction of the frame formation member 8b 20 are arranged to overlap each other.

On the other hand, in the frame forming member 51b located below FIG. 11, the joining portion 56 of the frame forming member 51b and the joining portion 20 of the frame forming member 8a, and the joining portion 57 of the frame forming member 51b and the joining portion of the frame forming member 8b. 16 are arranged to overlap each other.
That is, the joint portion 16 of the frame forming members 8a and 8b matches the joint portion 57 of the frame forming members 51a and 51b. Similarly, the joint portion 20 of the frame forming members 8a and 8b matches the joint portion 56 of the frame forming members 51a and 51b.

  According to this embodiment, even if it is a large environmental test apparatus in the test chamber 33, the volume of the storage space 15 is large only by adding the frame forming member 51 to the frame forming member 8 of the first embodiment. Since the outer frame member 50 can be manufactured, it is excellent in mass productivity.

In the above-described embodiment, the extending directions of the lateral wall portion 18 of the opposing frame forming members 8a and 8b and the lateral wall portion 22 of the frame forming members 8a and 8b are directed in the same direction, but the present invention is limited to this. It may be directed in a different direction. For example, as shown in FIG. 13, the extending directions of the lateral wall portions of the opposing frame forming members 8a and 8b may be opposed. In that case, the frame forming members 8a and 8b have only the joint portion 20, and the frame forming members 51a and 51b have only the joint portion 56 (third embodiment).
On the other hand, as shown in FIG. 14, the extending directions of the lateral wall portions of the opposing frame forming members 8a and 8b may face away from each other. In that case, the frame forming members 8a and 8b have only the joint portion 16, and the frame forming members 51a and 51b have only the joint portion 57 (fourth embodiment).

  In the first embodiment described above, the overhanging wall portion 11 located at one end of the main body portion 10 and the overhanging wall portion 12 located at the other end of the main body portion 10 are joined to the overhanging wall portion 11. 16, different joints are provided on the overhanging wall 12 like the joint 20, but the present invention is not limited to this, and each overhanging wall 11, overhanging wall as shown in FIG. 15. The same joint part may be provided in the part 12 (5th Embodiment). In the case of the present embodiment, the projecting wall portion 11 and the projecting wall portion 12 of one frame forming member 8a are each provided with a joint portion 16, and the projecting wall portion 11 and the projecting wall portion 12 of the other frame forming member 8b are provided. , Respectively, are provided with joints 20.

  Similarly, in the above-described second embodiment, the overhanging wall portion 11 and the overhanging wall portion 12 have different joint portions such as the joint portion 16 on the overhang wall portion 11 and the joint portion 20 on the overhang wall portion 12. However, the present invention is not limited to this, and the same joining portion may be provided on each of the overhanging wall portion 11 and the overhanging wall portion 12 as shown in FIG. 16 (sixth embodiment). . In the case of the present embodiment, the projecting wall portion 11 and the projecting wall portion 12 of one frame forming member 8a are each provided with a joint portion 16, and the projecting wall portion 11 and the projecting wall portion 12 of the other frame forming member 8b are provided. , Respectively, are provided with joints 20.

In the above-described embodiment, the joining portion 16 includes the vertical wall portion 17 bent in the direction orthogonal to the overhanging wall portion from the base end side of the overhanging wall portion 11, and the overhanging direction end portion of the vertical wall portion 17. The horizontal wall portion 18 is folded back in the direction intersecting the vertical wall portion 17. However, the present invention is not limited to this, and the bending angle and vertical length of the vertical wall portion 17 with respect to the overhanging wall portion 11 are not limited thereto. The bending angle of the lateral wall portion 18 with respect to the wall portion 17 is not particularly limited. For example, the bending angle β of the vertical wall portion 17 with respect to the overhanging wall portion 11 as shown in FIG. 17 (a) may be an acute angle with respect to the overhanging wall portion, or the overhanging wall as shown in FIG. 17 (b). The bending angle β of the vertical wall portion 17 with respect to the portion may be an obtuse angle with respect to the protruding wall portion. Further, for example, the bending angle γ of the horizontal wall portion 18 with respect to the vertical wall portion 17 may be an acute angle with respect to the vertical wall portion 17 as shown in FIG. 17C, or the vertical angle as shown in FIG. The bending angle γ of the horizontal wall portion 18 with respect to the wall portion 17 may be an obtuse angle with respect to the vertical wall portion 17.
The joints 20, 56, 57 may also have the same angle. In this case, the other joint part joined to these joint parts has a shape along the joint parts 16, 20, 56, and 57.

  In the embodiment described above, the joint portion of the frame forming member is provided on the top surface portion 61 and the bottom surface portion 60 of the outer casing, but the present invention is not limited to this, and the location of the joint portion is not limited. For example, you may provide in the side parts 62 and 63 of an outer housing | casing. In addition, it is preferable to provide a junction part in the position which opposes via the storage space 15. FIG.

  In the above-described embodiment, the outer frame member is formed by two or four frame forming members, but the present invention is not limited to this, and the number of frame forming members is not limited.

  In the above-described embodiment, after overlapping a part of the joint part 16 of one frame forming member and a part of the joint part 20 of the other frame forming member, the fluidity is increased along the extending direction of the gap 28. However, the present invention is not limited to this order, and the sealing material having fluidity is applied to the corners 26 as shown in FIGS. 18 (a) to 18 (c). Later, the joint 16 and the joint 20 may be overlapped.

DESCRIPTION OF SYMBOLS 1 Environmental test apparatus 3 Inner housing | casing 5 Thermal insulation member 6 Outer housing | casing 7 Outer frame member (frame body)
8 Frame forming member (metal plate)
14 Sealing part (sealing material)
16, 20 Joint portion 17, 21 Vertical wall portion 18, 22 Horizontal wall portion 25, 26 Corner portion 27 Fastening element

Claims (4)

An environmental test apparatus for creating a desired test environment inside, an inner housing in which a device under test is arranged, a heat insulating member surrounding a part or all of the inner housing, and further outside the heat insulating member In an environmental test apparatus having an outer casing that surrounds part or all of the inner casing and the heat insulating member and constitutes part or all of the outer casing of the environmental test apparatus,
There is a frame that forms at least the top and side surfaces of the outer casing, and the frame is formed by mechanically joining a plurality of metal plates,
Among the metal plates, at least the joint portions of the two metal plates to be joined are both bent twice or more,
The joint portion includes at least a vertical wall portion projecting inward of the frame body, and a horizontal wall portion that is on the tip side of the vertical wall portion and is bent in the same direction.
The vertical wall portions and the horizontal wall portions of the two metal plates to be joined are matched with each other, a sealing material is interposed between the vertical wall portions, and the matched portions of the horizontal wall portions are fastened. An environmental test apparatus characterized by being joined by elements. The vicinity of the joint between the two metal plates forms the same plane,
The portion where the vertical wall portions are matched extends in a direction perpendicular to the plane,
The environmental test apparatus according to claim 1, wherein a portion where the vertical wall portions are matched and a portion where the horizontal wall portions are matched face each other in a direction orthogonal to each other.   The environmental test apparatus according to claim 1, wherein the frame body includes a plurality of joint portions of the two metal plates. It has a corner portion connecting the portion where the vertical wall portions are matched and the portion where the horizontal wall portions are matched,
The environmental test apparatus according to claim 1, wherein a sealing material is interposed at the corner portion.

Images