JPH081417B2 - Fixed structure such as rails in line type 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 a line-type environmental test apparatus of a type in which a test piece is placed on a pallet to move a temperature-controlled room, in order to easily connect a plug connector of a tester to the test piece in the temperature-controlled room. The present invention relates to a fixed structure such as a rail.

[0002]

2. Description of the Related Art As a conventional line type environmental test device,
An environment test chamber covered with a heat insulating material is configured to supply air at a predetermined temperature from a constant temperature air supply device.A guide rail is installed in the test chamber and the lifting device is fixed to the bottom wall of the test chamber. It is known that a tester is attached to the lifting device. In this device, the plug connector of the tester was raised to connect with the plug of the pallet placed on the guide rail, and the test piece was subjected to an electric current test under constant temperature.

[0003]

However, in the case of such a conventional apparatus, since the test chamber is exposed to high temperature or low temperature, the guide rail installed in the test chamber expands or contracts due to the influence of temperature. To do. As a result, the position of the pallet placed on the guide rail and the position of the lifting device fixed to the bottom wall of the test chamber shift horizontally due to thermal expansion, and the plug connector of the tester becomes the connector of the pallet. There is an inconvenience that it can not be connected with, and the energization test cannot be performed well. Therefore, the present invention has been made in view of the drawbacks of the prior art, and an object thereof is to provide a structure in which the plug connector of the testing machine and the connector of the pallet are not displaced in the horizontal direction even when the temperature changes. To do.

[0004]

[Means for Solving the Problems] That is, the present invention is a guide rail installed in an environmental test chamber covered with a heat insulating material by supplying air of a predetermined temperature from a constant temperature air supply device. In an apparatus configured to continuously move a pallet on which a test piece is placed in a linear direction, the guide rail is supported slidably in a horizontal direction,
A bearing is fixed to the guide rail, a plug connector is connected to one end of a shaft inserted into the bearing, and a lower end of the shaft is attached to a bottom wall of a test chamber through a joint that absorbs a horizontal deviation. This object is achieved by a fixed structure such as rails in a line type environmental test device connected to a fixed lifting device. According to a second aspect of the present invention, there is provided a disk having a hollow inside where the joint is connected to the shaft and having an opening having a small diameter downward, and an inner diameter of the hollow arranged in the hollow portion of the disk is narrower than the opening. The disk has a wide diameter, and the lower part of the disk is connected to the shaft of the lifting device.

[0005]

That is, in the apparatus according to the present invention, when the guide rail is heated and thermally expanded, the position of the pallet placed on the guide rail moves in the horizontal direction in proportion to the temperature and shifts.
At the same time, the plug connector fixed to the guide rail also shifts in proportion to temperature. Therefore, the deviation of the relative position between the plug connector and the pallet is corrected to 0.
Further, the position of the shaft of the lifting device fixed to the bottom wall of the environmental test device and the position of the shaft connected to the plug connector are shifted horizontally. However, since the two shafts are connected via the joint that absorbs the horizontal deviation, the plug connector can be driven even if the deviation occurs due to heat.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to one embodiment shown in the drawings. In the figure, the apparatus is divided into a high temperature tank 2 and a low temperature tank 3 via a heat insulating material 1, and the constant temperature tank 2 and the low temperature tank 3 are communicated with each other through a communication port, and the high temperature tank 2. The U-shaped guide rail 4 is installed in the low temperature tank 3 and the like via a rail support 5 so as to be slidable in the horizontal direction. One end of the rail 4 is fixed to the feed mechanism 8 of the pallet 6 feed shaft 7. Bearings 9 and 10 are mounted at predetermined locations (bottom portions) in each of the high temperature tank 2 and the low temperature tank 3, and shafts 11 and 12 are supported by the bearings 9 and 10 so as to be vertically movable. Plug connectors 13 and 14 of the tester are connected to one end of 12.

The other ends of the shafts 11 and 12 are connected to an elevating device 16 fixed to the bottom walls of the test tanks 2 and 3 through a joint 18 that absorbs a horizontal shift. , 12 having an inner cylindrical cavity 22 and having a small-diameter opening downward, and a disk 24 disposed in the cylindrical cavity 22 of the circular disks 19, 20. The disk 24 is joined to the piston shaft 26 of the lifting device 16. The disk 24 has a diameter smaller than the inner diameter of the cylindrical cavity 22 of the disks 19 and 20 and wider than the openings of the disks 19 and 20.

As shown in FIG. 1, the pallet feed shaft feed mechanism 8 includes two columns 27 and 28 fixed to a base.
A slide shaft 30 extending between the columns, a slide bearing 32 mounted on the slide shaft 30, a cylinder 34 connected to the column 27 and a piston shaft 36 connected to the slide bearing 32, and the slide bearing The rotation means 38 is joined to 32 and rotates the shaft 7 in the axial direction.

Shaft 7 connected to a pallet feed mechanism
In this embodiment, the guide rail 4 is made of the same material as the guide rail 4, and the protruding pieces 40 are mounted at predetermined intervals. In addition, this shaft 7 is also the same as the above-mentioned guide rail 4 in the test tank 2,
Inside 3 is slidably supported in the horizontal direction, and is configured to slide on the support member when expanded or contracted by heat. The mechanism for moving the pallet 6 by the shaft 7, the projection piece 40, and the feeding mechanism 8 is the one described in detail in Japanese Utility Model Publication No. 3-2840 devised by the present applicant.

In the apparatus according to the present invention having the above-described structure, the constant temperature air supply device (not shown)
Since air having a predetermined temperature is supplied into the low temperature tank 3, the guide rail 4 expands in the high temperature tank 2, while it contracts in the low temperature tank 3, so that the guide rail 4 moves on the rail support 5 on the right side in the low temperature tank 3. Direction, in the high temperature tank 2, it moves to the left. On the other hand, the lifting devices mounted on the bottom walls of the test tanks 2 and 3 made of a heat insulating material do not move because they are not affected by heat.

Bearings 9 and 10 mounted on the guide rail 4.
However, there is no deviation in the relative positional relationship between the plug connector of the tester mounted on the shaft supported by the bearings 9 and 10 and the plug provided on the pallet. The positional relationship between the bearings 9 and 10 and the lifting device is horizontally displaced. However, in the device according to the present embodiment, since the shafts 11 and 12 and the piston shaft of the lifting device are connected by the joint 18 that absorbs the horizontal deviation, the diameter and the circle of the disk 24 constituting the joint 18 are The difference from the diameter of the columnar cavity 22 absorbs this deviation and transmits the upward movement of the lifting device to the plug connector, so that the pallet can be easily connected to the plug. If the shaft and rail are made of the same material, the positional deviation can be further reduced.

[0012]

With the above-mentioned structure, the device according to the present invention can cope with the deviation due to the temperature change in the test chamber by connecting the plug connector to the guide rail for mounting the pallet, and the drive shaft of the panel connector and the lifting device. Since it was configured to connect via a joint that absorbs the horizontal deviation, the connection between the plug connector mounted on the test tank and the plug of the test piece, which tended to occur in the conventional device, Crazy can be greatly improved.

[Brief description of drawings]

1 is a longitudinal sectional view of an apparatus according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

[Short description of symbols] 1 heat insulating material 2 high temperature tank 3 low temperature tank 4 guide rail 5 rail support 6 pallet 7 shaft 8 feed mechanism 9, 10 bearing 11, 12 shaft 13, 14 plug connector 16 lifting device 18 joint 19, 20 Disc 22 Cavity 24 Disc 26 Piston shaft 27, 28 Strut 30 Slide shaft 32 Slide bearing 34 Cylinder 36 Piston bearing 38 Rotating means 40 Projection piece

Claims (2)

[Claims] 1. A pallet having a test piece placed on a guide rail installed in the environment test chamber, which is configured to supply air of a predetermined temperature from an isothermal air supply device to the environment test room covered with a heat insulating material. In a device configured to be continuously moved in a linear direction, the guide rail is slidably supported in a horizontal direction, a bearing is fixed to the guide rail, and one of shafts fitted into the bearing is fixed. A line-type environmental test device in which a plug connector is connected to the tip, and the lower end of the shaft is connected to an elevating device fixed to the bottom wall of the test chamber through a joint that absorbs horizontal deviation. Fixed structure for rails, etc. 2. The inside where the joint is connected to the shaft has a cavity.
A disk having a small-diameter opening below and a cavity of the disk
Is the diameter smaller than the inner diameter of the cavity placed inside and wider than the opening?
A disc, and the lower part of the disc is a lifting device.
The fixed structure for a rail or the like in the line-type environmental test device according to claim 1, wherein the fixing structure is connected to a shaft of the stationary unit.