JPH0430549Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial Application Field" This invention relates to a test head device in an IC test device that tests the quality of an IC.

``Background of the idea'' There are two types of IC test equipment: one that automatically sends the IC under test to the measurement section and tests the IC continuously in a fully automatic manner, and the other that uses a board (also called a performance board) that makes up the test head. There is a type of test in which the IC under test is manually attached to a tester (which is currently installed), and each IC is tested one by one. Regardless of the type of test equipment, the performance board must be detachably attached to the equipment.

This invention provides a test head device that can be used in any type of IC test equipment.

The test head is provided with a board called a performance board, and a socket is provided on this board. The IC under test is attached to this socket and the test is performed.

If you want to test ICs with different pin counts, you must change the board. Therefore, conventionally, the boards constituting the test head have been installed so that they can be replaced.

FIG. 4 shows the structure of a conventional test head section. In the figure, 1 indicates a board constituting the test head. A socket 2 is attached to the front side of this board 1, and an IC 3 to be tested is attached to this socket 2.

The board 1 is attached to the device main body 4 with screws 5, etc., and the board 1 can be replaced by removing the screws 5.

A motherboard 6 is provided below the board 1. Contacts 7 are implanted in this motherboard 6. The contact 7 has a built-in spring, and the spring presses the conductive pin 7A provided at the tip of the contact 7 so that it can move in and out toward the back side of the board 1, and contacts the electrode 8 provided on the back side of the board 1. Electrode 8 is electrically connected to each terminal of socket 2 by a conductive pattern.

In this way, each terminal of the socket 2 provided on the board 1 is connected to the motherboard 6, and the IC under test 3 is connected to the motherboard 6.
The structure is such that each pin is connected to the test equipment via the motherboard 6.

"Problem that the invention attempts to solve" The contact 7 that connects the board 1 and the motherboard 6 has a spring and a conductive pin 7A,
It uses a special structure. This contact 7 is not generally available on the market, and is expensive because it is specially manufactured.

Moreover, about two to four contacts 7 are prepared for one terminal of the socket 2, so that a current circuit, a voltage circuit, a signal circuit, etc. can be formed separately during a DC test. Therefore, the number of contacts 7 is approximately 100 to 1,500, and the cost accounted for by the contacts is high.

For this reason, it is conceivable to use an inexpensive connector that is generally available on the market. However, commercially available connectors generally have a structure in which contact between the contacts is maintained by mating the male and female parts, which increases the force required to insert and remove the connector, making it difficult to replace the board 1 easily. be. Incidentally, when the number of pins in a connector increases to around 1,500 pins, the insertion/removal force becomes around 120 kg, making it impossible to do it manually.

Furthermore, a large number of connectors are provided on the back side of the board, and since these many connectors must be connected and removed at once, the positions of the connectors must be aligned with high precision. Even if the positions of the connectors are precisely aligned, it is difficult to connect and disconnect many connectors at once.

The purpose of this invention is to propose a test head device having a structure that allows for easy board replacement and a structure that allows smooth fitting of connectors.

``Means for solving the problem'' In this invention, A. A board that has an IC socket on the front side for mounting the IC under test, and a plurality of connectors connected to each terminal of the IC socket on the back side. B. A receiving connector provided on the device main body and mating with the connector on the board; C. A connector that grips the four circumferences of the board and uses a lever and cam mechanism to move the board in a direction perpendicular to the board surface. D. A connector support that supports either the connector or the receiving connector in a slightly movable manner; and E. A taper provided at the mating ends of the connector and the receiving connector. A test head device is constructed using the following.

According to the test head device according to this invention, the board constituting the test head is moved in a direction perpendicular to the surface of the board by a board drive device, and the connector attached to the back side of the board and the receiving connector attached to the device main body are connected and detached.

The board drive device uses a lever and cam mechanism to obtain force multiplication. Therefore, the connector and the receiving connector can be easily attached and detached.

However, in this invention, either the connector or the receiving connector is mounted so that it can move slightly, and the mating ends of the connector and the receiving connector are tapered, so that the positions of the connector and the receiving connector are accurately aligned. Even without this, the connector and receiving connector can be smoothly fitted.

``Embodiment'' FIGS. 1 and 2 show an embodiment of the test head device according to this invention. In the figure, 11 indicates the main body of the apparatus. A board drive device 12 is mounted on the top surface of the device main body 11.
Equipped with.

The outline of the board driving device 12 includes a first frame 14,
A second frame 26 hinged to the first frame 14
and rails 16 provided on both sides of the first frame 14,
Link 1 connecting first frame 14 and rail 16
9 and a handle 21 that drives the link 19.

In other words, as shown in FIG.
engages with a pin 13 installed on the top surface of the device body 11, and is supported by this pin 13 so that it can move in the vertical direction but cannot move in the direction parallel to the opening surface of the device body 11. .

Reference numeral 14 shown in FIG. 2 indicates a first frame. Ear portions 14A are provided at the four outer corners of the first frame 14,
A hole is formed in this ear portion 14A, and a pin 13 is inserted into this hole.
is inserted to support the first frame 14 so that it can move only in the vertical direction.

At least two protrusions (for example, bearings) 15 are provided on each side of the first frame 14.
In this example, two protrusions 15 are provided on each side on both sides.

The protrusion 15 is inserted into a long hole 16A formed in the rail 16, so that the rail 16 can be moved along both sides of the first frame 14. An inclined groove 16B is formed on the outer surface of the rail 16. Slanted groove 1
In this example, 6B indicates the case where two pieces are provided on each side of the outside of the rail 16.

Reference numeral 17 indicates a support body implanted in the device main body 11.
This support body 17 is provided with a protrusion (for example, a bearing) 18 toward the inside. The protrusion 18 is connected to the inclined groove 16.
engage B. In this way, the rail 16 is sandwiched between the first frame 14 and the support 17 on both sides of the first frame 14, and can slide along the frame 14 by the elongated hole 16A and the projection 15. Supported.

On the other hand, a link 19 for moving the rail 16 to one end of the first frame 14;
A handle 21 constituting a lever for operating is provided. That is, in this example, the link 19 and the handle 21 are constructed from a plate 22 bent into a dogleg shape. The plate body 22 is pivotally supported by the first frame body 14 at the bending point of the dogleg shape, and the two plate bodies 22 are rotatably supported on both sides of the first frame body 14.

The end of the plate body 22 on the handle 21 side is connected to the connecting member 2
3, and the pair of plate bodies 22 are rotated in conjunction with each other. Reference numeral 24 indicates a handle for performing this rotation operation.

The link 19 has a groove 19A on the inner surface of its end, and a projection (for example, a bearing) 25 provided at the end of the rail 16 is engaged with the groove 19A.
Due to this engagement, the rail 16 can be moved laterally by rotating the handle 21.
By moving the rail 16 laterally, the first frame 14 is moved by the cam action of the protrusion 18 and the inclined groove 16B.
, in a direction perpendicular to the surface of the first frame 14,
In other words, it can be moved up and down. The amount of movement in the vertical direction corresponds to the head of the slope of the inclined groove 16B.

From the above, the structure in which the first frame 14 is driven in the vertical direction can be understood.

Next, the structure of the portion that supports the board 1 will be explained.

For example, fins 14B are formed inside the first frame 14, and a frame 14C is installed, and the board 1 is placed and supported on these fins 14B and frame 14C.

In both cases, a second frame 26 is rotatably attached to the first frame 14, and the board 1 is held down by the second frame 26 from above. A frame 26A is also installed inside the second frame body 26, and the board 1 is also held down by this frame 26A.

Trapezoidal protrusions 2 are provided on both sides of the free rotation end of the second frame 26.
6B, and a projection (for example, a bearing) 26C is provided on the top surface of this trapezoidal projection 26B. The trapezoidal protrusion 26B has a thickness comparable to the thickness of the member constituting the first frame 14, and is inserted into a notch 14D formed in the member constituting the first frame 14.

A projection 26C attached to the top surface of the trapezoidal portion 26B is inserted into a vertical groove 16C formed on the inner surface of the rail 16. The vertical groove 16C communicates with the horizontal groove 16D at its tip.

Reference numeral 27 indicates a handle used to open and close the second frame 26.

FIG. 3 shows the structure of the connector attached to the back side of the board 1 and the receiving connector provided on the device main body 11 side.

In FIG. 3, reference numeral 31 indicates a connector attached to the back side of the board 1. This connector 31 has a concave groove 31
A, and a male contact 31 is placed in this groove 31A.
A plurality of B are planted.

A motherboard 32 is provided on the bottom side of the device main body 11, and a card 34 is installed in the motherboard 32 via a connector 33. A receiving connector 35 is attached to the upper end of the card 34. Receptacle connector 3
A connector support 36 is attached to 5. Both ends of the connector support 36 are engaged with notches 38 formed in the frame 37.

In this invention, tapers 31C and 3 are provided at the opening of the connector 31 and the edge of the tip of the receiving connector 35.
5A and the shape of the notch 38 formed in the frame 37 is selected to be slightly larger than the cross-sectional shape of the connector support 36, thereby supporting the connector support 36 with some play against the frame 37. let

The amount of play is determined by the taper 31 formed at the opening of the concave groove of the connector 31 and at the tip of the receiving connector 35.
The amount may be selected to be approximately equal to the dimensions W of C and 35A.

"Effect of the invention" With this configuration, the receiving connector 35
board 1 because it is supported to allow some movement.
When the connector 31 and the receiving connector 35 are pushed down and the connector 31 and the receiving connector 35 abut each other, even if the positions of the connector 31 and the receiving connector 35 are slightly out of alignment, the taper 31C attached to the connector 31 and the taper 35A attached to the receiving connector 35 Therefore, the receiving connector 35 is guided by the concave groove 31A of the connector 31 and is guided into a fitted state.

Therefore, even if there are many combinations of connectors 31 and receiving connectors 35, the relationship between all the connectors 31 and receiving connectors 35 is flexible, so that all the connectors 31 and receiving connectors 35 can be smoothly fitted. be able to.

However, since the operation to bring the mated state into this state is increased by the action of the lever of the handle 21 and the action of the cam of the inclined groove 16B, it is possible to easily bring the mated state into the mated state with a small force and to pull it out from the mated state. .

That is, in the illustrated embodiment, the handle 21 is
As shown in the figure, when the first frame 14 and the second frame 26 are laid down horizontally, they are pressed downward, and when the handle 21 is turned vertically, the first frame 14 and the second frame 26 are pushed downward. 14 and the second frame 26 move upward and are separated from the device main body 11.

In this state, the protrusion 26C is located at the lower end of the vertical groove 16C. Therefore, in this state, the second frame 26 can be opened by holding the handle 27 and lifting the free end of the second frame 26.

The board 1 can be inserted inside the first frame 14 with the second frame 26 open, or the board that has been used up until now can be replaced with the board that will be used next.

When the second frame 26 is closed with the board 1 replaced, the protrusion 26C engages with the vertical groove 16C formed on the inner surface of the rail 16 and is inserted to the lower end of the vertical groove 16C.

When the handle 21 starts to be turned sideways with the board 1 sandwiched between the first frame 14 and the second frame 26, the protrusion 26C engages with the lateral groove 16D. By this engagement, the first frame 14 and the second frame 26 are automatically locked in a state where the board 1 is sandwiched between them.

Therefore, when the connector provided on the back side of the board 1 is fitted into the receiving connector provided on the device main body 11 side,
The reaction force is received upward, but the reaction force is applied to the second frame 2.
6, the board 1 can be held down.

At this time, the board 1 has a first frame 14 and a second frame 2.
Since the board 1 is held down by the four circumferences held by the board 6, there is no local deformation of the board 1. Therefore, the board 1 can be used safely without being damaged.

Furthermore, according to this invention, since a commercially available connector is used, the cost required for the connector can be significantly reduced.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of this invention, Fig. 2 is a partially exploded perspective view for explaining an embodiment of this invention, and Fig. 3 is a test head device according to this invention. FIG. 4 is a cross-sectional view for explaining a connection structure between a board and a motherboard, and FIG. 4 is a cross-sectional view for explaining a conventional test head device. 11...Device main body, 12...Board drive device,
13...Pin, 14...First frame, 15...Protrusion, 16...Rail, 16A...Long hole, 16B...
... Slanted groove, 17 ... Support body, 18 ... Protrusion, 19
... Link, 21 ... Handle, 23 ... Connection member, 24 ... Handle, 25 ... Protrusion, 26 ... Second
Frame body, 27...handle.

Claims (1)

[Scope of Claim for Utility Model Registration] A. A board having a socket for mounting the IC under test on the front side and a plurality of connectors connected to each terminal of the socket on the back side, and B. A board provided on the main body of the device. C. a board drive device that grips the board and moves the board in a direction perpendicular to the board surface of the board to connect and detach the connector and the receiving connector; D. the connector; A test head device comprising: a connector support that supports one of the receiving connectors in a slightly movable manner; and a taper provided at the mating end of the connector and the receiving connector.