JPH0158465B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an environmental testing device for testing the reliability of electronic components and devices in various temperature and humidity environments.

Prior Art In this type of equipment, a linear guide rail for the test object is installed in a constant temperature environmental test chamber that is supplied with air adjusted to a predetermined temperature by a constant temperature air supply device. A single shaft having a plurality of protrusions parallel to the axis is pivoted, and the shaft is reciprocated a predetermined distance in the axial direction, and the protrusions move the test object on the guide rail to the position where the tester is installed. After acclimate to the temperature environment of the environmental test chamber by intermittent transfer to
Already disclosed by the applicant. (Actual request
58-71919, etc.) Problems However, since this device has a structure in which the test object is transferred intermittently using a linear guide rail, the installation space is too large, and the structure of the test object feeding device, take-out device, etc. is complicated. There was a drawback.

In addition, there is a method in which the test object is transferred using a rotary transfer device installed in the environmental test chamber (Japanese Patent Application Laid-Open No. 1983-1999).
51355), it had the disadvantage of lacking in versatility.

Solution The present invention has been made in response to such circumstances, and the gist thereof is to provide a cooler 2a and/or a heater 2c in an air flow path equipped with a blower 2a.
and a heat insulating material 8.
An environmental test chamber 1 covered with A rotary transport body 3 for test objects is rotatably supported by a plurality of plates 9 for mounting test objects 50 radially arranged on the outer surface of a substantially cylindrical drum 11 mounted coaxially. , the rotary conveyance body is
Mounting part 10 of the test object and the mounted test object 50
contactor 12 for electrically connecting to the tester
The rotation range of the rotary transport body includes the openings 15 and 16 provided in the test chamber 1, and a part of the rotation range extends outside the environmental test chamber,
When the rotary conveyance body 3 is stopped, the openings 15, 1
6 is almost blocked by the rotating conveyor,
An environmental test apparatus and the above-mentioned apparatus, characterized in that the mounting plate 9 is configured to attach and remove the test object from the plate 9 when it is in the rotation range outside the environmental test chamber. We further developed this by attaching the test device to the part of the rotary drive shaft that protrudes outside the environmental test chamber so that it can rotate integrally with the shaft, and by eliminating the need for other electrical wiring, the environmental test device only requires power wiring. The purpose is to make the device easily movable. This will be explained in detail below.

Embodiment FIG. 1 shows an embodiment of the present device, in which a cooler 2b of a refrigeration cycle and/or a heater 2c such as an electric heater are installed in an air flow path equipped with a blower 2a.
A constant-temperature air supply device 2 containing a thermostatic air supply device 2 is integrally assembled adjacent to an environmental test chamber 1 whose outside is covered with a heat insulating material 8. The constant temperature air supply device 2 and the environmental test chamber 1 are connected through air circulation channels 6 and 5, so that constant temperature air is supplied from the perforated plate 5a disposed on the ceiling of the environmental test chamber 1 to the chamber 1. The air is blown out almost uniformly inward, enters the blower through the flow path 6 connected to the suction port of the blower 2a at the bottom, and circulates. 6a is a supplementary air intake port corresponding to the amount of air flowing out from the opening of the environmental test chamber 1. Inside the environmental test chamber 1, a drive motor 18,
A rotary drive shaft 2 that rotates intermittently through a power transmission path of a roller chain 17a and a sprocket 17.
0 is rotatably supported by a bearing 22, and a sliding contact 19 consisting of a slip ring 19a, a carbon brush 19b, etc. is provided on the protrusion of the shaft 20 to the outside of the test chamber 1. It relays signals between the equipment side and the outside of the equipment. A substantially cylindrical drum 11 is provided on the outside of the rotary drive shaft 20 and coaxially with the shaft so as to rotate together with the shaft 20 while being supported by an arm 11a. Further, on the outer surface of the drum 11, there are plate bodies 9 for mounting test objects 50 such as electronic components in a radial manner.
However, a plurality of them (eight in the figure) are erected. A mounting guide frame 10 is fixedly installed on the mounting plate 9 as a part for mounting the test object, and a holding spring 10a is installed in the groove of the guide frame 10 to prevent the plate from falling off when rotating. is attached. In addition, when the test object is mounted along the guide frame 10, the necessary parts of the test object are connected to the contactor 1 to be electrically connected to the tester.
2 is fixedly installed so as to fit into a hole provided on the surface of the drum 11, and the wiring from each contact 12 enters into the shaft through the opening 21 of the hollow rotary drive shaft 20.
It is connected to the sliding contact 19. In the above, the structure of the mounting part of the test object and the mounting position of the contact are as follows:
Needless to say, it varies depending on the test object.
The environmental test chamber 1 is provided with openings 15 and 16, and the rotating transport body 3 for the test object, which is constituted by the drum 11 and the plate 9, enters the test chamber 1 through the opening 16. , and is configured to exit the room from another opening 15, and when this plate is outside, for example, at the test object attachment/detachment section 1a, it is possible to remove the tested object and perform a new test. The body is attached.

The rotation drive range of the rotary transport body 3 is a portion outside the environmental test chamber 1, particularly a certain area following the exit opening 15, that is, a rotation from the opening 15 to the test object attachment/detachment portion 1a. Depending on the temperature in the test chamber, cooling air or heated air is flowed from data points 1b, 1c, etc. into the space including the test chamber to cool the tested specimen.
Alternatively, a room temperature acclimatization chamber 25 is provided as a heating region or cooling region for heating and preventing dew condensation and frost formation. The test object mounted on the rotary carrier 3 is rotated intermittently by the angle formed by the two adjacent plates (360°/8 in the example), and is transported through the opening 16 into the test chamber 1. While entering and moving, the test chamber 1 becomes accustomed to the temperature environment, and a test is conducted by energizing at an appropriate position. After exiting through the opening 15 and acclimating to room temperature, the test chamber 1 returns to the attachment/detachment section 1a. At this time, the stopping position and the opening position are determined so that when the intermittent moving rotary conveyance body stops, the openings 15 and 16 of the environmental test chamber are almost closed by the rotary conveyance body. Try to minimize air loss through openings. 1
3 is a signal indicating the test result. Note that the drive shaft 20 may be one that rotates slowly and continuously.

FIG. 5 shows an embodiment of another invention related to the above invention, in which the configuration and operation of the environmental test chamber 1, constant temperature air supply device 2, and rotary drive shaft 3 are completely the same. The difference between this invention and the above invention is that in FIG. 5, the hollow shaft 20 is provided with a tester mounting board 30, which is fixed to the hollow rotating shaft 20 and rotates integrally with the hollow shaft 20, in the part that projects outside the environmental test chamber 1. , by attaching a tester 31 and its accompanying equipment 32 to this, the tester is configured to rotate in synchronization with the rotating shaft 20. With this configuration, the sliding contact 33, which is a signal relay part,
Since it is exclusively connected to the power supply, the wiring is simplified, and it can be moved freely by the casters etc. located at the bottom of the environmental test chamber, and the generation of noise from sliding parts can be reduced.

Effects The device of the present application has a rotary conveyance body that performs intermittent rotational movement.
The shutter acts as a shutter to close the opening of the environmental test chamber at the stop position when parts are installed or removed from the test equipment, so loss of conditioned air is extremely small without the need for a special closing member. ,and,
A stable test environment can be maintained. In addition, the structure allows the electrical connection between the test device and the test device at the same time as the test device is mounted on the rotating conveyor, which simplifies and secures the connection structure, making it possible to meet various specifications. It can also be used to test objects under test, and has excellent versatility.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1. FIG. 3 is a sectional view taken along the line B-B in FIG. 2, FIG. 4 is a sectional view showing an example of a sliding contact, and FIG. 5 is a sectional view showing essential parts of another embodiment of the present invention. .

Claims (1)

[Claims] 1. A constant-temperature air supply device comprising a cooler and/or heater housed in an air flow path equipped with a blower, and an environmental test chamber covered with a heat insulating material for air circulation. A plurality of cylindrical drums for mounting a test object radially on the outer surface of a substantially cylindrical drum connected by a flow path and mounted coaxially around a drive shaft that rotates intermittently in the environmental test chamber. A rotary transport body for the test object is rotatably supported, and the rotary transport body is configured such that the mounting part of the test object and the mounted test object are electrically connected to the test device. The rotation area of the rotary conveyance body includes an opening provided in the environmental test chamber, and a part of the rotation area extends outside the environmental test chamber. , when the intermittent rotation of the rotary conveyance body is stopped, the opening is almost closed by the rotary conveyance body, and when the mounting plate is in the rotation range outside the environmental test chamber, the plate body is closed. An environmental test device characterized in that it is configured to attach and detach a test object to and from the test object. 2. The apparatus according to claim 1, wherein a heating region or a cooling region is provided in the rotation region of the rotary transport body outside the environmental test chamber to acclimatize the tested specimen to room temperature. 3 In the air flow path with a blower, a cooler and/or
Or a constant temperature air supply device comprising a heater;
A heat-insulatingly coated environmental test chamber is connected to the environmental test chamber by an air circulation flow path, and in the environmental test chamber, a substantially cylindrical cylinder is provided around a hollow rotary drive shaft that rotates intermittently and coaxially with the shaft. A rotary transport body for the test object is rotatably supported, and consists of a plurality of mounting plates arranged radially on the outer surface of a shaped drum. It has a contact for electrically connecting the mounted test object to the tester, and the rotation area of the rotating transport body includes the opening provided in the environmental test chamber, and A part of the area extends outside the environmental test chamber, and when the rotating conveyance body that rotates intermittently is stopped, the opening is almost closed by the rotary conveyance body, and the rotating conveyance body extending outside the environmental test chamber is substantially closed. An environmental testing device characterized in that a tester is attached to a drive shaft so that it can rotate integrally with the rotary drive shaft. 4. The tester is connected to an external power supply via a sliding contact provided on the rotation drive shaft, and electrical wiring is installed through the hollow shaft to connect the tester to the contact provided near the part where the test object is mounted. 3. The device according to claim 3.