JP3379838B2 - Environmental test equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an environmental test device for conducting a chemical chemical stabilization test, a food storage test, an electronics-related test, and the like.

[0002]

2. Description of the Related Art FIGS. 10 and 11 show an example of a conventional environment test apparatus.

This apparatus is provided with a test tank 90 that opens to the front, and the opening of this test tank 90 can be opened and closed by a door (not shown). Left and right side walls 91A of this test tank
A pair of front and rear shelf support columns 92 is fixed to (the side wall on the front side is not shown in the figure for convenience). A plurality of windows 92a are vertically arranged side by side on each shelf support column 92, and the front and rear portions of the shelf support 94 are detachably attached to any windows 92a. In particular,
As shown in FIG. 11, the shelf receiver 94 has an L-shaped cross section, and a part of the upright wall thereof is cut away to form a hook 9 on the back surface.
4a is formed, and the hook portion 94a has the window 9a.
It is adapted to be locked to the lower edge of 2a.

The left and right edges of the shelf 95 are placed on both shelf receivers 94. Each shelf 95
It has a mesh plate shape and allows air to pass vertically. Furthermore, the air outlet 9 is provided on the upper part of the rear wall 91B of the test tank.
6, an air intake port (not shown) is provided in the lower part.

According to such a device, the height position of each shelf 95 can be freely set by appropriately selecting the window 92a for mounting the shelf receiver 94. Then, the test article is appropriately placed on each shelf 95, the door is closed, and the air is blown from the air outlet 96 into the test tank 90. This air does not place the test article on each shelf 95. While the parts are sewn, they are permeated downward and exhausted from an air inlet (not shown), whereby the air conditioning in the test tank 90 is executed.

Each of the shelves 95 can be slid back and forth on a shelf receiver 94. By pulling these shelves 95 forward as needed, the test article is placed on the shelves 95 and the shelves 9 are placed.
5 Consideration has been given to facilitate removal of the test article from above.

[0007]

The above-mentioned conventional apparatus has the following problems to be solved.

A) A total of four shelf support columns 92 and a shelf support 94
However, the number of shelves is doubled, the number of parts is large, and the structure is complicated.

B) Since the shelf 95 is supported only at the left and right ends, the central portion of the shelf 95 is easily bent downward when the test article is placed, and the weight of the test article is significantly limited. If the thickness of the shelf 95 is increased to increase the rigidity in order to eliminate this inconvenience, the shelf 95 becomes heavy and inconvenient to handle.
There is an unavoidable increase in costs due to increased material costs.

In view of the above circumstances, the present invention provides an environmental test apparatus which has a simple structure with a small number of parts and which enhances the support rigidity of a shelf and allows a relatively heavy test object to be placed. To aim.

[0011]

As a means for solving the above-mentioned problems, the present invention provides a shelf for mounting a test object in a test tank having an opening at the front, and In an environmental testing device equipped with a blowing means for generating an air flow in the test tank, a lateral side shelf support having a plurality of vertically aligned locking portions provided in front of the inner surface of both side walls of the test tank. A member and a rear shelf support member provided on the inner surface of the rear wall of the test tank and having a locking portion at a height position corresponding to each locking portion of the lateral shelf receiving support member, and in the left-right direction. It has a first receiving portion that extends and a second receiving portion that extends rearward from an intermediate portion of the first receiving portion, and the left and right ends of the first receiving portion serve as arbitrary locking portions of the lateral shelf receiving support members. It is configured to be detachably engaged, and the rear end of the second receiving portion is an optional rear shelf receiving support member. A shelf receiver configured to be detachably engaged with the locking portion, the shelf can be placed on the shelf receiver, and the second receiving portion can be provided on a lower surface of the shelf. A guided portion is provided which is slidably engaged in the front-rear direction (Claim 1).

The second receiving portion connects a pair of left and right guide portions extending rearward from two left and right portions of the first receiving portion and both guide portions at the rear side, and any one of the rear shelf receiving and supporting members is provided. It is more preferable to provide a pair of left and right guided parts, which are composed of a connecting part that is detachably engaged with the locking part, and that can be simultaneously engaged with the pair of guiding parts, respectively, on the lower surface of the shelf. Claim 2).

In this case, it is possible to form the second receiving portion by a single rod member or pipe member having a U-shape as a whole.

[0014]

According to the apparatus of the present invention, the left and right ends of the first receiving portion of the shelf receiver are engaged with the engaging portions of the lateral shelf receiving support members and the rear end of the second receiving portion. By engaging the portion with the locking portion of the rear shelf support member, the shelf receiver can be supported by the three shelf support members. Then, the shelf can be placed on the shelf receiver, and the environmental test can be performed with the test article placed on the shelf.

Here, the front end of the shelf is supported by the first receiving portion over the entire left-right direction, and the portion inside the left and right ends of the shelf is supported by the second receiving portion over the entire front-rear direction. As compared with the conventional structure in which only the left and right ends of the shelf are supported by the shelf receiver, the supporting rigidity of the shelf is high and the shelf is difficult to bend even when a relatively heavy test object is placed on the shelf. Moreover, since the guided portion provided on the shelf is engaged with the second receiving portion, the positional displacement of the shelf in the left-right direction is restricted, and the shelf can be slid forward. In this pulled-out state, the test article can be easily placed on the shelf or the test article can be easily taken out from the shelf.

Although the second receiving portion may be a single rod (that is, the shelf receiving portion may be T-shaped), the second receiving portion may be connected to the first receiving portion as described in claim 6. A pair of left and right guide portions extending rearward from two left and right portions of the portion, and a connecting portion that connects the guide portions to each other at the rear and is detachably engaged with an arbitrary locking portion of the rear shelf support supporting member. If a pair of left and right guided portions that can be simultaneously engaged with the pair of guide portions are provided on the lower surface of the shelf, the rigidity of the second receiving portion itself is increased and the second receiving portion is Since the shelf is supported at two places on the left and right, the supporting rigidity of this shelf is further enhanced.

In this case, the guide part and the connecting part may be formed by separate members, but it is also possible to form the whole by a single U-shaped rod or pipe. The structure is more simplified.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

The test tank 10 shown in FIG. 1 has an opening 12 only on the front side, and the opening 12 is opened and closed by a door (not shown). Each wall of the test tank 10 has a heat insulating material inside, and its periphery is covered with a steel plate or the like. Among these walls, a lateral side shelf support column 16A is fixed to the front part of the inner surface of the left and right side walls 14A, and a rear side shelf support column 16B is fixed to the center part of the inner surface of the rear wall 14B. And these 3
A shelf receiver 18 is supported in a plurality of upper and lower stages by book shelf support columns 16A and 16B, and a shelf 20 is supported on the shelf receiver 18.

The shelf receiver 18 includes a first receiver 22 and a second receiver 2.
It consists of 4. The first receiving portion 22 is made of a single linear rod and extends in the left-right direction. This first receiving part 2
2, protrusions 26 are formed upward at positions inside the left and right ends by a certain size. 2nd receiving part 2
Reference numeral 4 is a pair of left and right guide portions 24a extending rearward from positions inside the protrusions 26 in the first receiving portion 22, and a connecting portion 24b connecting the both guide portions 24a to each other at the rear side. Then, the entire second receiving portion 24 is composed of a single U-shaped rod.

The lateral shelf receiving columns 16A and the rear shelf receiving columns 16B have the same shape and the same structure for mass production. Therefore, the horizontal shelf support column 16A will be described below as a representative.

The lateral side shelf receiving column 16A extends vertically in its entirety, and as shown in FIG. 6, a front plate 16a and side plates 16b extending rearward (upward in FIG. 6) from the left and right ends of the front plate 16a. And a rear plate 16c extending inward from the rear ends of the side plates 16b. Among them, only the front plate 16a and the side plates 16b are cut off intermittently, leaving the rear plate 16c, and the gap 28 is formed.
The side plate 16b and the side plate 16b form a locking portion. A semicircular locking notch 16d is formed at the center of the front end of the front plate 16a at each locking portion, and the diameter of this locking notch 16d is smaller than the outer diameter of the first receiving portion 22. And the vertical dimension of the gap 28 (that is, the spacing between the locking portions) is set to be larger than the diameter of the first receiving portion 22 and the second receiving portion 24.

Each of the shelves 20 is entirely made of a continuous plate material, and the width dimension (the maximum dimension in the left-right direction) of the shelf 2
The size is such that it can be fitted between the six members.

A pair of left and right guide angles (guided portions) 30 are fixed to the lower surface of the rear portion of each shelf 20. These guide angles 30 include a fixing portion 31 fixed to the lower surface of the shelf 20 and a side wall portion 3 extending downward from the fixing portion 31.
2 and the bottom wall portion 3 extending inward from the lower end of the side wall portion 32.
4 and 7, the second receiving portion 24 can be fitted between the both side wall portions 32, as shown in FIGS. 4 and 7. Then, in this fitted state, the bottom wall portion 33 is configured to cover the guide portion 24a of the second receiving portion 24 from below. The length of the bottom wall portion 33 is such that when the shelf 20 is pushed all the way in, it will come off the second receiving portion 24.
0 and the shelf holder 18 can be engaged and disengaged.

As shown in FIG. 8, a blower (blowing means) 36 is installed at the bottom of the test tank 10 and an air conditioning room partition plate 40 is provided immediately above it. Blower 36
Is for discharging the air horizontally to circulate the air in the test tank 10. In the vicinity of the suction port of the blower 36, air conditioners 41, 4 including a heater and a cooler are provided.
Two are provided. The specific air flow in the test tank 10 will be described later.

Next, how to use this device will be described.

First, in a state where the second receiving portion 24 of the shelf receiver 18 is fitted between the side wall portions 32 of the guide angles 30 on the shelf 20 side, the arcuate connecting portion 24b of the second receiving portion 24 is fitted.
Is inserted into an appropriate gap 28 of the rear side shelf support column 16B, and the left and right ends of the first receiving portion 22 are formed into a gap 28 at the same height position as the gap 28 in both lateral side shelf support columns 16A. Insert and drop into locking notch 16d. This results in the following state.

The left and right ends of the first receiving portion 22 are supported by both lateral side shelf receiving columns 16A, and the connecting portion 24b at the rear end of the second receiving portion 24 is supported by the rear side shelf receiving columns 16B.
That is, the shelf receiver 18 is supported at three points on the test tank 10 side. -The front end of the shelf 20 has the first receiving portion 22 over the entire left-right direction.
Is supported from below, and the portion of the shelf 20 that is slightly inside the left and right ends is supported from below by the second receiving portion 24 over the entire front-rear direction.

The lateral displacement of the shelf 20 is regulated by the projection 26 on the front side and by the engagement of the guide portion 24a and the guide angle 30 on the rear side. Moreover, the entire shelf 20 is slidable in the front-back direction.

A gap 34 is secured between the left and right edges of the shelf 20 and the side wall 14A.

As shown in the figure, if the longitudinal dimension of the bottom wall portion 33 of the guide angle 30 is set to be sufficiently small,
First, the shelf holder 18 is engaged with the three shelf holder columns 16A, 16B, and then the bottom wall portion 33 is fitted into the rear of both guide portions 24a from above, while the shelf 2 is placed on the shelf holder 18.
It is also possible to place 0.

As described above, the shelf receiver 18 and the shelf 20
Is set at an arbitrary height position, the shelf 20 is appropriately pulled out to the front, and the test article is placed thereon. After the placement, the shelf 20 is returned to the original back position and the door (not shown) is closed. When the blower 36 is operated in this state, the discharge air of the blower 36 hits the side wall 14A and then the gap on the left side of FIG. 8 (the left edge portion of the shelf 20 and the side wall 14A, as shown by the dotted arrow in FIG. 8). 8), and flows horizontally in the upper part of the test tank 10 through the gap 34 (the right edge of the shelf 20 and the side wall 14).
It goes down through the gap 34 with A) and returns to the suction side of the blower 36. By such forced circulation of air, the temperature and humidity inside the test tank 10 are made uniform, and a good environmental test can be realized.

Such an apparatus has the following advantages over the conventional apparatus shown in FIG.

A) Each shelf 20 has a total of three shelf receiving columns 16
It can be supported by A and 16B and one shelf receiver 18. Therefore, the number of parts can be reduced and the device can be simplified.

B) The front end portion of the shelf 20 is supported by the first receiving portion 22 over the entire left-right direction, and the portion inside the left and right end portions of the shelf 20 is extended over the entire front-rear direction by the second receiving portion 24.
10, the supporting rigidity of the shelf 20 is higher than that of the structure in which only the left and right ends of the shelf 95 are supported by the shelf receivers 94 as shown in FIG. Even if the shelf 20 is not easily bent. Therefore, the allowable weight range of the test object can be greatly expanded. Moreover, by engaging the guide angle 30 on the side of the shelf 20 and the second receiving portion 24, the positional displacement of the shelf 20 in the left-right direction is regulated, and the shelf 20 is operated as in the conventional case.
Can be slid back and forth.

C) Since the shelf 20 is supported by the second receiving portion 24 at a portion inside the left and right ends thereof, the maximum dimension of the shelf 20 in the left-right direction is larger than the distance between the lateral side shelf receiving columns 16A. Can be set to small dimensions without inconvenience. For this reason, a relatively large gap 34 can be secured between the shelf 20 and the side wall 14A of the test tank 14 without increasing the thickness of the lateral shelf support column 16A, and good ventilation can be achieved through this gap 34. Can be secured. Further, from this relationship, it is not necessary to form the shelf 20 in the shape of a mesh plate as in the conventional case. Therefore,
By constructing the shelf 20 entirely with a continuous plate material, the structure can be further simplified, and it is possible to prevent the wind from the blower outlet from directly hitting the test object and prevent adverse effects. Further, by forming the air circulation as shown in FIG. 8, it is possible to promote the uniformization of the temperature and humidity in the test tank 10.

D) A pair of left and right guide portions 24a extending rearward from two left and right portions of the first receiving portion 22 and the rear shelf support column 16 by connecting both guide portions 24a at the rear.
Since the pair of left and right guide angles 30 on the lower surface of the shelf 20 are engaged with both the guide portions 24a at the same time, the rigidity of the second receiving portion 24 itself is increased. At the same time, the support rigidity of the shelf 20 by the second receiving portion 24 can be further increased.

Although the guide portion 24a and the connecting portion 24b may be formed as separate members, the entire second receiving portion 24 as in the above embodiment is a single U-shaped rod or pipe. If it is made of material, there is an advantage that the device structure can be further simplified.

E) Each guide angle 30 has a side wall portion 32.
The guide angle 30 prevents the shelf 20 from floating upward from the guide portion 24a because it has a bottom wall portion 33 and a shape that wraps downward from the side of the guide portion 24a. Therefore, even if the center of gravity of the shelf 20 moves forward of the first receiving portion 22 when the shelf 20 is pulled out forward, it is possible to reliably prevent the shelf 20 from tipping over.

F) Interlocking projections are provided intermittently in the vertical direction on the lateral shelf receiving columns 16A, and the spacing between the interlocking portions (that is, the vertical dimension of the gap 28) is set to that of the first receiving section 22. Since the diameter (that is, the vertical dimension) of each of the left and right ends is made larger and the engaging notch 16d is formed at the upper end of the front plate 14a of each engaging part, the left and right ends of the first receiving part 22 are separated from each other by the gap. The first receiving portion 22 can be inserted into both the lateral side shelf receiving columns 16A, 16 by simply inserting the first receiving portion 22 into the locking notch 16d.
B can be easily engaged.

The present invention is not limited to such an embodiment, and the following modes can be adopted as an example.

(1) In the present invention, it is possible to mount a test article without constructing the shelf 20 as a whole of continuous plate materials, and it is also possible to substitute conventional mesh plates, wires, punching plates, etc. is there.

(2) In the present invention, as shown in FIG. 10, it is also possible to blow air from top to bottom in one direction or from bottom to top in one direction.

(3) In the apparatus of the above-mentioned embodiment, the guide portion 2
If the position of the shelf 20 in the left-right direction is regulated by the engagement of the guide angle 30 with the guide angle 4a, the protrusion 26 can be omitted.

(4) In the above embodiment, the second receiving portion 24 may be formed of a single rod or pipe (that is, the entire shelf receiver 18 is formed in a T shape). In this case, on the lower surface of the shelf 20, as a guided portion in the present invention, as shown in FIG. 9A, a pair of projecting portions 37 may be provided which sandwich the second receiving portion 24 from both sides. A cover member 38 may be provided to surround the second receiving portion 24 with the lower surface of the shelf 20 as shown in FIG. In the latter case, the shelf 20 cannot be removed from the second receiving portion 24 while the shelf receiver 18 is attached to the test tank 10, but it is ensured that the shelf 20 is lifted from the second receiving portion 24 as in the above-described embodiment. There is an advantage that can be prevented.

[0046]

As described above, according to the present invention, the shelf receiver is composed of the first receiving portion in the left-right direction and the second receiving portion in the front-rear direction, and the left and right end portions of the first receiving portion and the second receiving portion. The rear end portions are supported by the lateral side shelf receiving support member and the rear side shelf receiving support member (that is, they are supported at three points), and the lower surface of the shelf is slidably engaged with the second receiving portion in the front-rear direction. Since it is provided with a guided portion, the required number of shelf receivers and shelf receiver supporting members is reduced to simplify and reduce the cost of the device, and the supporting rigidity of the shelf is increased to increase the rigidity of the test object. This has the effect of loosening weight restrictions and expanding the range of application and processing capacity. Moreover, as in the conventional case, the shelf can be slid to the front, and the test article can be easily taken in and out.

Then, as described in claim 2, the second
The receiving part is attachable to and detachable from an arbitrary locking part of the rear shelf support member by connecting a pair of left and right guide parts extending rearward from two left and right parts of the first receiving part and connecting both guide parts at the rear side. And a pair of left and right guided portions that can be simultaneously engaged with the pair of guide portions, respectively, are provided on the lower surface of the shelf. In addition to increasing the rigidity, the supporting rigidity of the shelf by the second receiving portion can be further increased, and there is an effect that the weight limitation of the test object can be further expanded.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional perspective view showing the internal structure of a test tank of an environmental testing device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view showing the internal structure of the test tank.

FIG. 3 is a perspective view showing a support structure of a shelf in the test tank.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5A is a plan view of a lateral side shelf support member provided in the test tank, and FIG. 5B is a side view of the shelf support member.

FIG. 6 is a sectional view taken along line BB of FIG.

FIG. 7 is a perspective view showing a state where a guide angle (guided portion) is provided on the lower surface of the shelf.

FIG. 8 is a schematic cross-sectional view showing the flow of air in the test tank.

9 (a) and 9 (b) are sectional front views showing a modified example of the engaging structure between the shelf and the second receiving portion of the shelf receiver.

FIG. 10 is a partial cross-sectional perspective view showing an example of the internal structure of a test tank of a conventional environment test apparatus.

FIG. 11 is a cross-sectional view showing an attachment structure of a shelf receiver in the above device.

[Explanation of symbols]

10 test tanks 12 openings 14A Test tank side wall 14B Test tank rear wall 16A Side shelf support member 16B Rear shelf support member 16a Front plate (constituting locking part) 16b Side plate (constituting locking part) 16d locking notch 18 shelves 20 shelves 22 1st receiver 24 Second receiving part 24a guidance section 24b connection part 26 Protrusion 28 Gap (Gap between locking parts) 30 guide angle (guided part) 34 Gap between shelf and side wall of test tank 36 Blower (Blower)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Mishima 3-5-6 Tenjinbashi, Kita-ku, Osaka City Tabai Espec Co., Ltd. (56) References: 58-49939 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G01N 17/00 A47B 57/00 B01L 11/00 JISST file (JOIS)

Claims (2)

(57) [Claims] 1. An environmental test apparatus in which a shelf on which a test article is placed is disposed in a test tank having an opening in the front, the environmental test apparatus being provided in front of inner surfaces of both side walls of the test tank, and vertically A lateral side shelf receiving support member having a plurality of locking portions arranged side by side, and a locking portion provided on the inner surface of the rear wall of the test tank and at a height position corresponding to each locking portion of the lateral side shelf receiving support member. A rear shelf receiving and supporting member, a first receiving portion extending in the left-right direction, and a second receiving portion extending rearward from an intermediate portion of the first receiving portion, and the left and right ends of the first receiving portion are respectively It is configured to be detachably engaged with an arbitrary locking portion of the lateral side shelf support member,
And a shelf receiver configured such that a rear end of the receiving portion is detachably engaged with an arbitrary locking portion of the rear shelf receiving support member, and the shelf can be placed on the shelf receiver. Configure and
An environment testing apparatus, wherein a guided portion is provided on the lower surface of the shelf so as to be slidably engaged with the second receiving portion in the front-rear direction. 2. The environmental test apparatus according to claim 1,
The second receiving portion, a pair of left and right guide portions extending rearward from two locations of the first receiving portion, and the two guide portions are connected to each other at the rear,
And a pair of left and right cover members that are simultaneously engageable with the pair of guide portions on the lower surface of the shelf. An environmental testing device characterized by having a guide part.