CN100559199C - Inspection unit - Google Patents

Abstract

An inspection unit (1) comprising a probe block (3) electrically connected to an inspection object (7) and an inspection block (2) detachably mounted to the probe block (3), wherein the inspection block (2) has The mounting screw (12) that fixes the probe block (3) is inserted from the opposite side to the connection surface of the probe block (3), and the probe block (3) is formed on the connection surface side that corresponds to the mounting screw (12). Screw the internal thread or embedded nut of the mounting screw (12). In addition, set the anti-drop screw (10) on the probe block (3), and rotate and remove the screw (11) to push out the anti-drop screw (10), so that the probe block (3) and the inspection block (2) can be separated reliably Therefore, the replacement work and the fine adjustment work of the probe block can be performed easily and safely.

Description

check unit

technical field

The present invention relates to an inspection unit including a probe block electrically connected to an inspection object such as an LCD panel, and an inspection block fixed to a main body of an inspection device to which the probe block is detachably attached.

Background technique

Conventionally, when inspecting an object to be inspected such as an LCD panel, the connection terminals of the LCD panel are electrically contacted via conductive contacts (probes), and then connected to a flat cable or the like via a contact block electrically connected to the other end of each probe. Various test signals and the like are supplied from an inspection device connected to the flat cable to inspect the LCD panel.

The probes are provided on a probe block, and the probe block is arranged so that the probes are suitable for the arrangement state of the connection terminals of the inspection object, and is replaced when the type of the inspection object is changed or the probe block is damaged.

Patent Document 1: JP-A-2001-141747

However, as shown in FIG. 7 , the probe block 102 is attached to the frame 101 via the inspection block, and the frame 101 is fitted and fixed to a part of the frame or cover of the inspection device 103 . Furthermore, the probe block 102 is installed inside the inspection device 103, the inspection object 105 is placed on the device stage 104 provided inside the inspection device 103, and the inspection object 105 is moved up and down by moving the device stage 104 up and down. The contact terminals of the probes are electrically connected to the probes of the probe block 102 for inspection.

However, when replacing the probe block 102 or finely adjusting the position of the probe block 102 as the type of the inspection object 105 is changed or the probe block 102 is damaged, the probe block 102 is attached toward the frame 101 side. and the probe block 102 is located inside the inspection device 103, therefore, as shown in FIG. In addition, as shown in FIG. 9, the inspection device 103 has a cover 103a, and when attaching the probe block to the cover 103a, it is necessary to stop the inspection operation of the inspection device 103 and open the cover 103a.

Moreover, for the operator of the inspection device 103, there is a problem that, in addition to the poor workability of the above-mentioned attachment and detachment of the probe block 102, the operator has to bend his body during the operation, etc. Unbalanced posture, so the safety of the work cannot be ensured.

Contents of the invention

The present invention has been achieved in view of the above circumstances, and an object of the present invention is to provide an inspection unit that can easily and safely perform replacement work or fine adjustment work of a probe block.

In order to solve the above-mentioned problems and achieve the object, the inspection unit according to the first invention includes a probe block electrically connected to the object to be inspected and an inspection block detachably attached to the probe block, wherein the inspection block has a The mounting screw for fixing the probe block is inserted into the opposite side of the connecting surface of the probe block, and the probe block is formed with an inner hole screwed to the mounting screw on the corresponding part of the mounting screw, that is, on the connecting surface side. thread. This internal thread can also be realized by embedded nuts.

In addition, the inspection unit according to the second invention is according to the above-mentioned invention, wherein the probe block has a drop preventing portion that protrudes axially from the connection surface side and has a head that expands, and the inspection block has a guide. The guide groove of the drop prevention part, the width of the guide groove exceeds the width of the shaft and is smaller than the width of the head.

In addition, the inspection unit according to the third invention is according to the above invention, wherein the inspection block includes a detachment screw that pushes the head of the drop preventing portion and pushes out the probe block.

In addition, the inspection unit of the fourth invention is according to the above-mentioned invention, wherein the inspection block has a positioning pin for determining the mounting position with the probe block, and the removing screw goes beyond the positioning pin to the probe block. The length of the needle block side embedded to push out the drop prevention part.

The inspection unit according to the present invention includes a probe block electrically connected to an object to be inspected, and an inspection block to which the probe block is detachably attached, wherein the inspection block has a hole that is inserted from the side opposite to the connection surface of the probe block. The mounting screw of the probe block is fixed, and the probe block is formed with an internal thread screwed on the connecting surface side of the corresponding part of the mounting screw, so that the mounting screw can be easily and safely carried out. Effects of probe block replacement work or fine-tuning work.

Description of drawings

Fig. 1-1 is the front view of the inspection unit of the embodiment of the present invention;

Figure 1-2 is a cross-sectional view of the A-A line of the inspection unit shown in Figure 1-1;

Fig. 2-1 is a front view showing a state where mounting screws are removed from the inspection unit shown in Fig. 1-1;

Figure 2-2 is a B-B line sectional view of the inspection unit shown in Figure 2-1;

Fig. 3-1 is a front view showing a state in which the inspection unit shown in Fig. 1-1 is pushed and the screws are removed;

Figure 3-2 is a C-C sectional view of the inspection unit shown in Figure 3-1;

Fig. 4 is a cross-sectional view showing a state in which a probe unit is removed from the inspection unit shown in Fig. 1-1;

Fig. 5 is a diagram showing an operating state when the inspection unit shown in Fig. 1-1 is used in a box-shaped inspection device;

Fig. 6 is a diagram showing an operation state when the inspection unit shown in Fig. 1-1 is used in an inspection device with a cover;

Fig. 7 is a diagram showing a state in which a conventional inspection unit is installed in an inspection device;

Fig. 8 is a diagram showing a state of working on a box-shaped inspection device using a conventional inspection unit;

FIG. 9 is a diagram showing a state of working on a covered inspection device using a conventional inspection unit.

In the figure: 1-inspection unit; 2-inspection block; 3-probe block; 4-probe; 5-contact block; 6-flat cable; 7-inspection object; 10-drop prevention screw; 10b-head; 11-removal of screws; 12-installation screws; 13-locating pins; 14-guiding slots; 101-frame; 103-inspection device;

Detailed ways

Next, an inspection unit for carrying out the best mode of the present invention will be described. In addition, an inspection unit used for inspection of LCD panels will be described here.

(implementation mode)

Fig. 1-1 is a front view of the inspection unit according to the embodiment of the present invention. Fig. 1-2 is an A-A sectional view of the inspection unit shown in Fig. 1-1. In FIG. 1-1 and FIG. 1-2 , the inspection device 1 is connected with a probe block 3 at the bottom of a substantially L-shaped inspection block 2 . The probe block 3 is provided with a plurality of probes 4 at the positions corresponding to the connection terminals of the inspection object 7 such as an LCD panel. The parting surface (not shown) contacts and is connected to the flat cable 6 .

The probe block 3 is provided with various probes corresponding to the arrangement form of the connection terminals of the inspection object 7 , and is replaced when the type of the inspection object 7 is changed or the probe block 3 is damaged. The probe block 3 and the contact block 2 are positioned by the positioning pin 13 on the side of the contact block 2 and fixed by the mounting screw 12 . The mounting screws 12 are inserted and removed from the side opposite to the mounting side of the probe block 3 , and internal threads or embedded nuts of the mounting screws 13 are formed on the contact surface side of the probe block 3 corresponding to the mounting screws 12 . In addition, a hole for fitting the positioning pin 13 is provided on the contact surface side of the probe block 3 , that is, at a position corresponding to the positioning pin 13 .

A guide groove 14 is formed on the contact surface side of the inspection block 2 , and the drop prevention screw 10 provided on the contact surface side of the probe block 2 is guided by the guide groove 14 . The drop preventing screw 10 has a columnar shaft 10 a screwed to the probe block 3 and formed approximately vertically on the connection surface, and a head 10 b that tapers at the tip of the shaft 10 a. Here, the width of the guide groove 14 is smaller than the diameter of the head portion 10b and larger than the diameter of the shaft 10a. Therefore, when the assembly state of the inspection block and the probe block 3 is released by loosening the mounting screw 12, the probe block 3 moves up and down in the figure, but the tapered portion of the head 10b is engaged with the guide groove to prevent falling off.

The removal screw 11 is provided on the upper part of the head 10b which is a position corresponding to the fall prevention screw 10, and can press the head 10b of the fall prevention screw 10a. When the probe block 3 is replaced, etc., the removal screw 11 can be rotated to move the drop prevention screw 10 downward. Thereby, the inspection block 2 and the probe block 3 can be separated reliably and easily.

Here, detachment of the probe block 3 will be described with reference to FIGS. 2-1 , 2-2 , 3-1 , 3-2 , and 4 . In addition, the steps of installing and removing the probe block 3 can be reversed. As shown in Figure 2-1 and Figure 2-2, first, remove the mounting screws 12. In this state, the probe block 3 and the inspection block 2 are positioned by the positioning pins 13, and the probe block 3 may immediately move downward or may not move.

Afterwards, as shown in Fig. 3-1 and Fig. 3-2, the screw 12 is rotated and removed, and the head 10b of the anti-drop screw 10 is pushed from its front end and pushed down. As a result, the probe block 3 is surely moved downward and separated from the inspection block 2 . However, the length h2 of the downward movement by removing the screw 12 is set to be larger than the length h1 of the protrusion of the positioning pin 13 to the contact surface side. Thereby, the positioning pin 13 and the probe block 3 are separated reliably, and the probe block 3 can be detached reliably without contacting the probe block 3 and the positioning pin 13.

Afterwards, as shown in FIG. 4 , by making the fall prevention screw 10 slide along the guide groove 14, as described above, the probe block 3 can be prevented from contacting the positioning pin 13 to remove the probe block 3, and since the head 10b is guiding Since the upper part of the groove 14 slides, it is possible to prevent the probe block 3 from coming off.

As a result, in the box-shaped inspection device 103 shown in FIG. The detachment, installation, and fine adjustment of the probe block 3 are easily performed. Furthermore, as described above, the probe block 3 can be reliably prevented from falling off by the guide groove 14 of the inspection block 2 and the drop prevention screw 10, and the contact between the inspection block 2 and the positioning pin 13 can be prevented by removing the screw 11, thereby enabling Detachment and attachment of the probe block 3 are easily performed. In addition, since the operator does not need to enter the inspection device 103 at this time, the safety of the operator can be ensured. In particular, attachment, detachment, and fine adjustment can be performed while the inspection device 103 is in operation.

In addition, as shown in FIG. 6, for an inspection device 103 having a cover 103a, when the probe block 3 is provided inside the cover 103a, the same effect as that of the inspection device 103 shown in FIG. Since detachment, attachment, and fine adjustment of the probe block 3 are performed without opening the cover 103a, workability and safety can be improved.

In addition, the above-mentioned probe block 3 is preferably formed by the conductive contact holder described in Japanese Patent Application No. 2003-430400. A high thermal expansion support frame having a high coefficient of thermal expansion and a low thermal expansion support frame disposed in the normal direction of the contact surface with respect to the high thermal expansion support frame and having a linear expansion coefficient lower than that of the object to be contacted are laminated and formed. If this conductive contact holder is used, its strength is higher than that of resin, so even if internal threads or embedded nuts are formed on the contact surface side of the probe block 3 and the inspection block 2, sufficient mounting force can be maintained. .

In addition, the above-mentioned drop preventing screw 10 does not have a shaft shape, and any shape may be used as long as it can be guided in the guide groove 14 . The probe block 3 is prevented from falling depending on the diameter of the head portion 10b of the drop prevention screw 10 and the width of the guide groove 14. However, it is not limited thereto. A mechanism for preventing the drop prevention screw 10 from falling at any position is sufficient. In addition, the removal of the screw 11 is a screw mechanism, but it is not limited thereto. It may also be a mechanism that removes the screw 11 and pushes it, and then returns to the original position by spring force after the push. In addition, the detachment screw 11 may not always be installed on the inspection block 2, but may be attached only when the probe block is detached.

As described above, the present invention relates to an inspection unit including a probe block electrically connected to an inspection object such as an LCD panel and an inspection block fixed to the main body of an inspection device on which the probe block is detachably attached, and is particularly useful for An inspection unit for easy and safe replacement of probe blocks and fine adjustments.

Claims (3)

1. an inspection unit has the probe block that is electrically connected the inspection object and loads and unloads the inspection piece that this probe block is installed freely, it is characterized in that,

Described inspection piece has from the opposition side with the joint face of described probe block and inserts and the mounting screw of fixing described probe block,

Described probe block is that described joint face side is formed with the internal thread that screws togather this mounting screw at the counterpart of described mounting screw,

Described probe block have described joint face side with the form projection of the axle of column and its header extension fall the portion of preventing,

Described inspection piece has the described gathering sill that falls the portion of preventing of guiding,

The width of described gathering sill surpasses the width of described axle and less than the width of described head.

2. inspection unit according to claim 1 is characterized in that,

Described inspection piece possesses the described head of the portion of preventing and the screw that unloads that described probe block is unloaded in release of falling of pushing.

3. inspection unit according to claim 2 is characterized in that,

Described inspection piece has the register pin of the installation site of definite and described probe block,

The described screw that unloads surpasses the length that described register pin embeds to described probe block side, to release the described portion of preventing that falls.

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