JPH0536200Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Use The present invention relates to an environmental testing device for conducting a current test on electronic components such as semiconductors in a high-temperature or low-temperature environment.

Conventional technology A conventional environmental test device includes a constant temperature air supply device installed in a test chamber covered with a heat insulating material, a test object placed in the test chamber, and energized in a high or low temperature environment. A test type is known.

This type of test device is configured so that the test object is carried into the test chamber with the door of the test device open, and after the test device is connected to the test device and the door is closed, a current conduction test is performed.

Problems that the invention aims to solve However, in the case of such conventional environmental test equipment, it takes time to bring in and take out the test object, and especially when the environmental test is conducted at high temperature, the test object cools down. You must wait to remove the test object until the Therefore, there is an inconvenience that it takes too much time to prepare between one test and the next test.

Furthermore, because the door of the testing equipment must be kept open to cool the test specimens, the inside of the test chamber also becomes cold, and it becomes necessary to heat it again when the next test is performed, resulting in a large energy loss.

In view of the drawbacks of the prior art, it is therefore an object of the present invention to provide an environmental testing device that does not require much time to set up between one test and the next, and which reduces energy loss.

Means for Solving the Problems In other words, the present invention consists of two test chambers installed vertically or horizontally in an apparatus with a predetermined space separating them and with openings facing each other, and the space and the test chamber. It consists of two guide bases on which a test object is attached or placed, which reciprocates independently between the inside and the test chamber, and a drive means that reciprocates the guide bases, and when the two guide bases are located in the test chamber and This objective is achieved by an environmental test device configured to seal the openings of the test chambers when located in the space between the test chambers.

Function: First, while maintaining the inside of the test chamber at a constant temperature, one of the guide bases is moved from the test chamber to the space, and the test object is mounted on the guide base.

At this time, the guide base is configured to seal the opening of the empty test tank, so cold or warm air in the test tank does not escape.

After installation, the drive means is activated to move the guide base to the test chamber and begin the energization test.

Even when the test chamber is moved into a test chamber, the guide base is configured to seal the opening of the test chamber, so cold or warm air does not escape.

Next, move the other guide base to the space,
The test object is mounted on the guide base and moved to the test chamber as described above, and then an energization test is performed.

After the energization test is completed, the guide base is moved to the space, brought into contact with the outside air and returned to room temperature, then the test object is removed, the next test object is attached again, and the guide base is moved to the test chamber for the energization test. Do the following.

Therefore, at least one of the two test chambers can be used for the energization test.

Embodiment The present invention will be explained in detail below according to an embodiment shown in the drawings.

In the figure, 1 is a casing forming an environmental test device, and test tanks 2a and 2b covered with a heat insulating material are installed above and below a space covered by the casing 1 with a predetermined space between them. .

The openings of the test chambers 2a and 2b face each other, and two guide rails 4a and 4b are provided between the ceiling of the upper test chamber 2a and the bottom of the lower test chamber 2b.
are installed in parallel so as to pass through the opening.

An upper test tank 2 is placed between these two guide rails 4a, 4b in parallel with the guide rails 4a, 4b.
A threaded rod 6a pivotally attached to the ceiling of the lower test chamber 2b and a threaded rod 6b pivotally attached to the bottom of the lower test chamber 2b are installed, respectively.

The threaded rods 6a and 6b are both test chambers 2a and 2b.
The threaded rod 6 extends to an intermediate position in the space between
Pulleys 8a and 8b are provided at the ends of a and 6b, respectively.
are joined.

The pulleys 8a and 8b are connected to drive motors 9a and 9b via belts, and the drive motor 9
Threaded rods 6a, 6b are rotated via a belt by the rotation of a, 9b, and are connected to pulleys 8a, 8b.
is starting to rotate.

Guide rails 4a and 4b are slidably fitted into each ball bushing unit 16, which is connected to a guide base 12 with a predetermined spacing provided by partition plates 10a and 10b, and a guide base 14 with a predetermined spacing provided by partition plates 10c and 10d. Guide base 1
2 and 14 are configured to slide along guide rails 4a and 4b.

A sealing material 11 made of silicone rubber or the like is attached to the side surface of each partition plate 10a, 10b so as to slide against the end surface of the heat insulating material forming the opening.

Nuts 18, 18 are joined to the guide bases 12, 14, respectively.
Each threaded rod 6a, 6b is screwed into 8.

Therefore, each guide base 12, 14 is moved up and down by the rotation of the threaded rods 6a, 6b.

In the test chambers 2a and 2b, there is a Shirotsuko fan 2.
2. Constant temperature air is supplied from a constant temperature air supply device including a heater 24 and the like.

A bushing unit 25 is connected to the vertical plates 23 of the guide bases 12, 14, and plates 28, 30 are attached to both ends of a bar 26 that is slidably fitted into the bushing unit 25. Push rods 32 and 34 are connected to the plate 30 on the side where the test object is mounted, so that the test object can be pushed out from the test object rack assembly 36 having an L-shaped cross section toward the door 38 side. ing.

A push-out device 40 for pressing the plate material 28 is installed in the space between the test chambers 2a and 2b. The push-out device 40 is provided on the guide base 1.
The door 38 is adapted to open and close an opening provided in the casing 1 by means of an elevator device, and a cooling fan 42 is mounted inside the door 38 to blow outside air into the casing 1 and cool the test object.

In addition, 44 is a proximity switch for confirming the position of the guide bases 12 and 14, and 46 is a proximity switch for checking the position of the guide bases 12 and 14.
This is a proximity switch for checking the elevation position of 8.

In the environmental testing apparatus according to the present invention having the configuration described above, the test object is mounted in the socket provided in the test object mounting rack 36, and the rack 36 is energized.

Thereafter, when a button on the device is pressed to rotate the drive motor 9a, the threaded rod 6a rotates, and the guide base 12 rises together with the screwed nut 18.

When the guide base 12 has risen to a certain extent, a proximity switch 44 provided on the ceiling of the test chamber 2a confirms whether it has risen to a predetermined position and generates a signal to stop the operation of the drive motor 9a.

Then, the drive motor 9a is stopped by an instruction from a control device (not shown).

At this time, the opening of the test chamber 12 is sealed by the partition plate 10b of the guide base 12 and the sealing material 11. After the energization test is completed, when the tester presses the end button, the drive motor 9a begins to rotate in reverse, and the guide base 12 gradually descends.

When the guide base 12 stops, the cooling fan 42 installed inside the door 38 starts operating and sends outside air into the casing 1 to cool the object under test.

After that, the extrusion device 40 is operated, and the plate material 2
8 towards door 38. Then, the connection between the test object mounting rack 36 and the test object is released.

At this time, since the opening of each tank is sealed, there is less energy loss, and the work environment is improved because high or low temperature air does not come into direct contact with the worker.

After a certain amount of time has elapsed, the door 38 is opened, the object to be tested is removed, the next object to be tested is attached, and the energization test is performed again in the manner described above.

Regarding the lower test chamber 14, the test object can be attached to the rack 36 in the manner described above, and an energization test can be performed.

In this embodiment, the guide base is raised and lowered using a nut connected to the guide base, a threaded rod screwed into the nut, and a drive motor, but the mechanism is not limited to this. Various methods can be used, such as a structure in which the piston is moved up and down by a method, and a guide base is connected to this to move the piston up and down.

Effects As explained above, the environmental test device according to the present invention has two test chambers, and at least one of them is configured so that a current test can be performed while the test object is being attached or detached, so that the environmental test can be carried out efficiently. can be done.

In addition, the guide base that goes in and out of the test chamber is configured so that its opening is sealed both when it is in the test chamber and when it is located in space, making it possible to conduct environmental tests with less energy loss. .

[Brief explanation of the drawing]

The drawings show one embodiment of the device according to the present invention, in which FIG. 1 is a longitudinal sectional view of the device, FIG. 2 is a partially omitted front view showing the guide base elevating means, and FIG.
The figure is a plan view showing the guide base, FIG. 4 is a side view of the guide base, and FIG. 5 is a partial sectional view showing the connection relationship between the guide base and the opening. 1...Casing, 2a, 2b...Test tank, 4
a, 4b... Guide rail, 6a, 6b... Threaded rod, 8a, 8b... Pulley, 9a, 9b... Drive motor, 10a, 10b... Partition plate, 12, 1
4...Guide base, 16...Ball bushing unit, 18...Nut, 22...Shirotsukofan, 23...Vertical plate, 24...Heater, 25...Bushing unit, 26...Bar material, 28, 30... …
Plate material, 32, 34...Push rod, 36...Rack assembly, 38...Door, 40...Extrusion device, 4
2...Cooling fan, 44...Proximity switch, 46
...Proximity switch, 48...Proximity switch.

Claims (1)

[Claims for Utility Model Registration] (1) Two test chambers installed vertically or horizontally within the device with a predetermined space separating them and with openings facing each other, and the space and the inside of the test chamber. It consists of two guide bases on which the test object is attached or placed, which reciprocate independently, and a drive means that reciprocates the guide bases, and when the two guide bases are located in the test chamber, An environmental test device characterized in that the device is configured to seal an opening of a test chamber when the device is located in a space between the test chambers. (2) The environmental test apparatus according to claim 1, further comprising a fan for blowing outside air into the space between the test chambers, and the fan is configured to be driven when the guide base is positioned in the space.