CN110174535B

CN110174535B - Pressing head

Info

Publication number: CN110174535B
Application number: CN201910517961.2A
Authority: CN
Inventors: 尹浩
Original assignee: Suzhou Hirose Opto Co Ltd
Current assignee: Suzhou Hirose Opto Co Ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2022-04-12
Anticipated expiration: 2039-06-14
Also published as: CN110174535A

Abstract

The invention relates to the technical field of display screen testing, and discloses a pressure head for testing a display screen, which comprises a testing component and a pressing block, wherein the testing component comprises a connecting component and a measuring head component, and the measuring head component is arranged on the connecting component; the measuring head component is a first FPC board with a testing conduction part, or the measuring head component is a structural part with a probe connected and conducted with a second FPC board; the press block is configured to secure the test assembly. The pressure head is provided with the pressing block capable of fixing the testing components of two structures, so that the testing components can be suitable for crimping of display screen semi-finished products of different specifications.

Description

Pressing head

Technical Field

The invention relates to the technical field of display screen testing, in particular to a pressure head.

Background

When the semi-finished display screen product is produced, the performance and the defects of the display screen need to be detected, and the semi-finished display screen product with poor performance and defects (such as lines, black spots and the like when the display screen is lightened) is removed and reprocessed so as to ensure the quality of the semi-finished display screen product. During detection, the display screen semi-finished product is electrically connected with the test circuit board, the test circuit board is electrically connected with the test box, a detection signal is output to the display screen semi-finished product through the test box to light the panel screen, and whether the display screen semi-finished product has a defect or not is judged through visual detection.

At present, a test circuit board connected with a test box is connected to a pressure head, the test circuit board is usually a PCB and is electrically connected with an FPC board on the pressure head, the FPC board has two structures, one structure is that a test conduction part is directly arranged, and the test conduction part is butted with a test point on a semi-finished product of a display screen to test; the other FPC board is not provided with a test conduction part, needs to be connected with a probe, and is butted with a test point on a display screen semi-finished product by utilizing the probe. The pressure heads of two structures are usually arranged aiming at the FPC boards of two structures, and the pressure heads of corresponding structures are selected according to the structure of the semi-finished product of the display screen to be tested so as to press and connect the FPC board with the semi-finished product of the display screen.

It can be seen that the existing pressure head has no universality, the processing, production and test of the display screen are usually carried out on an automatic production line, if in a test link, the pressure head with a corresponding structure needs to be replaced according to the structure of a semi-finished product of the display screen to be tested, on one hand, the requirement on a mechanical mechanism of the automatic equipment is high, and on the other hand, the test efficiency is influenced.

In view of the above-mentioned drawbacks, the present designer is actively making research and innovation to create a new type of indenter, so that the indenter has more industrial utility value.

Disclosure of Invention

The invention aims to provide a pressing head which can be suitable for mounting FPC boards with two different structures.

In order to achieve the purpose, the invention adopts the following technical scheme:

an indenter comprising a test assembly and a press block, wherein:

the test assembly comprises a connecting assembly and a measuring head assembly, and the measuring head assembly is arranged on the connecting assembly; the measuring head component is a first FPC board with a testing conduction part, or the measuring head component is a structural part with a probe connected and conducted with a second FPC board;

the press block is configured to secure the test assembly.

Through setting up the briquetting that can fix the gauge head subassembly of two kinds of structures for this pressure head can be applicable to the display screen curtain semi-manufactured goods's of different specifications crimping, and the commonality is higher.

As a preferable scheme of the above indenter, the test module further includes a circuit board, and the circuit board is electrically connected to the probe module. The circuit board is a PCB board, and the pressing head and the testing equipment are conveniently and electrically connected through the circuit board to be detected.

As a preferable scheme of the above pressure head, the pressure block includes a first pressure block and a second pressure block, the second pressure block fixes the probe assembly, and the second pressure block is connected with the first pressure block and can move slightly relative to the first pressure block. Through making the relative first briquetting micrometric movement of second briquetting to satisfy the displacement of the different degrees that the gauge head subassembly of two kinds of structures needs when the crimping, make this briquetting can be general in the installation of the gauge head subassembly of two kinds of structures.

As a preferable scheme of the above pressure head, the second pressure block is connected to the first pressure block through a micro guide rail, and a return spring is connected between the second pressure block and the first pressure block. The cooperation of miniature guide rail and reset spring realizes the micromotion of second briquetting, and after the crimping, the second briquetting can return fast.

As an optimal scheme of the above pressure head, the first FPC board is fixed to the second pressing block through the connecting assembly, the connecting assembly comprises a first connecting board and a supporting board which are connected, the first connecting board is connected with the second pressing block, and the supporting board supports the first FPC board and is connected with a first positioning column for positioning the first FPC board. The first positioning column can be used for limiting the position of the first FPC board so as to accurately press-connect with the display screen semi-finished product.

As a preferable mode of the above-mentioned press head, the support plate is magnetically connected with a first pressing plate which presses the first FPC board. The first pressing plate can prevent the first FPC board from moving during crimping, the crimping accuracy is ensured, and the magnetic attraction matching structure is simple and easy to process.

As a preferable mode of the above indenter, a first insulating soft pad is connected to the first FPC board near the test conduction portion. The first insulating soft cushion can prevent the display screen semi-finished product from being damaged in the crimping process.

As a preferable mode of the indenter described above, the first insulating cushion has an inclined surface that guides the test conduction portion to contact the component to be tested. The inclined plane can make the conduction testing part contact with the semi-finished product of the display screen better.

As a preferred scheme of the above pressure head, the second FPC board is fixed to the second pressing block through the connecting assembly, the connecting assembly includes a second connecting plate and a second pressing plate which are connected, the second connecting plate is connected with the second pressing block, the second FPC board is arranged between the second connecting plate and the second pressing plate, the second pressing plate is connected with a second positioning column for positioning the second FPC board, and the probe passes through the second pressing plate and the second FPC board is connected. The second positioning column can be used for limiting the position of the second FPC board so as to be accurately in pressure connection with the display screen semi-finished product.

As a preferable scheme of the above pressure head, the second pressure plate is further connected with a second insulating soft pad, and an end of the probe penetrates through the second insulating soft pad. The second insulating soft cushion can avoid the damage of the display screen semi-finished product in the crimping process.

The invention has the beneficial effects that: through setting up the briquetting that can fix the test assembly of two kinds of structures for this test assembly can be applicable to the semi-manufactured goods crimping of display screen curtain of different specifications, when the semi-manufactured goods of display screen curtain of different specifications of test, need not to change the briquetting, only need with corresponding test assembly install on the briquetting can, the commonality is higher.

Drawings

FIG. 1 is a schematic view of a ram configuration provided in accordance with one embodiment of the present invention;

FIG. 2 is an exploded view of the attachment structure of the probe assembly in the indenter of FIG. 1;

FIG. 3 is a schematic diagram of a ram according to a second embodiment of the present invention;

fig. 4 is an exploded view of the connection structure of the gauge head assembly in the indenter of fig. 3.

Fig. 5 is an exploded view of the structure of the pressure block in the pressure head according to the first and second embodiments of the present invention.

In the figure: 100-support frame, 210-circuit board, 220-first FPC board, 222-first connection board, 223-support board, 224-first positioning post, 225-first press plate, 226-magnet, 227-first insulating cushion, 230-second FPC board, 231-probe, 232-second connection board, 233, second press plate; 234-a second positioning column, 235-a second insulating soft cushion, 240-a pressing block, 241-a first pressing block, 242-a second pressing block and 243-a micro guide rail.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 4, the pressure head of the present invention is used for performing a crimping test on a display screen semi-finished product, and the pressure head includes a testing assembly and a pressing block 240, wherein the testing assembly includes a connecting assembly and a probe assembly, and the probe assembly is disposed on the connecting assembly; the probe component is a first FPC board 220 with a test conduction part, or the probe component is a structural member with a probe 231 connected and conducted with a second FPC board 230; the press block 240 is configured to hold the test assembly. According to the invention, the pressing block 240 capable of fixing the test components of two structures is arranged, so that the test components can be suitable for crimping of display screen semi-finished products of different specifications, when the display screen semi-finished products of different specifications are tested, the pressing block 240 does not need to be replaced, only the corresponding test components are required to be installed on the pressing block 240, and the universality is higher.

In order to facilitate the electrical connection between the indenter of the present invention and the testing device, the testing assembly of the present invention further includes a circuit board 210, and the circuit board 210 is electrically connected to the probe assembly. The circuit board 210 is a PCB board, and the circuit board 210 is convenient for electrically connecting the pressure head with the testing equipment for detection. The circuit board 210 may be secured by the support frame 100 and the press 240 may be attached to mount the press of the present invention to automated equipment for processing display screens.

In order to enable the pressing block 240 to mount two different probe assemblies, as shown in fig. 5, the pressing block 240 includes a first pressing block 241 and a second pressing block 242, the first pressing block 241 is connected to the supporting frame 100, the second pressing block 242 fixes the probe assemblies, and the second pressing block 242 is connected to the first pressing block 241 and can move slightly relative to the first pressing block 241. Through making second briquetting 242 micromotion relative to first briquetting 241 to satisfy the displacement of the different degrees that the gauge head subassembly of two kinds of structures needs when the crimping, make this briquetting 240 can be used in the installation of the gauge head subassembly of two kinds of structures in general. Specifically, the second pressing piece 242 is connected to the first pressing piece 241 through a micro guide 243, and a return spring is connected between the second pressing piece 242 and the first pressing piece 241. The micro-movement of the second press block 242 is realized by the cooperation of the micro-guide rail 243 and the return spring, and after the compression joint, the second press block 242 can return quickly.

The present invention will be described by the following two embodiments with respect to the connection structure of the probe assembly and the pressing block 240 of the two structures.

Implementation mode one

As shown in fig. 1, 2 and 5, the probe assembly is a first FPC board 220 having a test conduction portion, the first FPC board 220 is fixed to the second press block 242 through a connecting assembly, the connecting assembly includes a first connecting board 222 and a supporting board 223 connected to each other, the first connecting board 222 is connected to the second press block 242, and the supporting board 223 supports the first FPC board 220 and is connected to a first positioning column 224 for positioning the first FPC board 220. The first positioning posts 224 are used to define the position of the first FPC board 220 so as to be accurately pressed against the display screen semi-finished product.

In order to avoid the deviation of the first FPC board 220 when the first FPC board 220 is press-connected to the display screen semi-finished product, a first pressing plate 225 for pressing the first FPC board 220 is connected to the supporting plate 223. The first pressing plate 225 can prevent the first FPC board 220 from moving during the crimping process, thereby ensuring the accuracy of the crimping process.

For the fixation of the first pressing plate 225, in the present invention, the first pressing plate 225 is magnetically engaged with the supporting plate 223. The magnetic attraction matching structure is simple and easy to process. For example, the first presser plate 225 may be fixed by attaching a plurality of magnets 226 that attract the first presser plate 225 to the support plate 223.

In addition, the first FPC board 220 of this embodiment is connected with a first insulating soft pad 227 near the test via. The first insulating soft pad 227 can prevent the display screen semi-finished product from being damaged in the process of crimping. Preferably, the first insulating soft pad 227 has a slope to guide the test via into contact with the component to be tested. The inclined plane can make the conduction testing part contact with the semi-finished product of the display screen better.

It can be seen that, only need to fix first FPC board 220 between first clamp plate 225 and backup pad 223, backup pad 223 is fixed in on the first connecting plate 222, and make the test conduction part be located first clamp plate 225, the outside 222 on backup pad 223 and the first connecting plate, form an equipment whole, when the display screen half-finished product crimping of needs use first FPC board 220 and corresponding specification, with this equipment whole installation on second briquetting 242 can (detachable mode, if utilize the bolt to be connected first connecting plate 222 and second briquetting 242), connect soon, the quick detach, convenient operation.

Second embodiment

As shown in fig. 3 to 5, the probe assembly is a structural member in which the probe 231 is connected and conducted with the second FPC board 230, the second FPC board 230 is fixed to the second press block 242 through a connecting assembly, the connecting assembly includes a second connecting plate 232 and a second press plate 233, the second connecting plate 232 is connected with the second press block 242, the second FPC board 230 is disposed between the second connecting plate 232 and the second press plate 233, the second press plate 233 is connected with a second positioning column 234 for positioning the second FPC board 230, and the probe 231 penetrates through the second press plate 233 to be connected with the second FPC board 230. The second positioning column 234 can be used to define the position of the second FPC board 230 so as to accurately press-connect with the display screen semi-finished product; the second pressing plate 233 can prevent the second FPC board 230 from moving during the crimping, ensuring the accuracy of the crimping.

In addition, the second pressing plate 233 of this embodiment is further connected with a second insulating cushion 235, and the end of the probe 231 penetrates through the second insulating cushion 235. The second insulating soft pad 235 can prevent the display screen semi-finished product from being damaged in the process of crimping.

It can be seen that, only the second FPC board 230 needs to be fixed between the second pressing plate 233 and the second connecting plate 232, and the probe 231 is located outside the second pressing plate 233 and the second connecting plate 232, so as to form an assembled whole, when the second FPC board 230 is required to be crimped with a display screen half-finished product of a corresponding specification, the assembled whole is mounted on the second pressing block 242 (in a detachable manner, for example, the second connecting plate 232 is connected with the second pressing block 242 by using a bolt), and the assembly is quick-connected and quick-detached, and is convenient to operate.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. An indenter comprising a test assembly and a pressure block (240), wherein:

the test assembly comprises a connecting assembly and a measuring head assembly, and the measuring head assembly is arranged on the connecting assembly; the pressing block (240) is configured to fix two test assemblies with different structures, and the structures of the measuring head assemblies are respectively as follows: the structure part is provided with a first FPC board (220) with a test conduction part and a probe (231) which are connected and conducted with a second FPC board (230);

the pressing block (240) comprises a first pressing block (241) and a second pressing block (242), the second pressing block (242) fixes the measuring head assembly, and the second pressing block (242) is connected with the first pressing block (241) and can move slightly relative to the first pressing block (241);

the first FPC board (220) is fixed to the second pressing block (242) through the connecting assembly, the connecting assembly comprises a first connecting board (222) and a supporting board (223) which are connected, the first connecting board (222) is connected with the second pressing block (242), and the supporting board (223) supports the first FPC board (220) and is connected with a first positioning column (224) for positioning the first FPC board (220);

the second FPC board (230) is fixed to the second pressing block (242) through the connecting component, the connecting component comprises a second connecting board (232) and a second pressing board (233) which are connected, the second connecting board (232) is connected with the second pressing block (242), the second FPC board (230) is arranged between the second connecting board (232) and the second pressing board (233), the second pressing board (233) is connected with a second positioning column (234) which positions the second FPC board (230), and the probe (231) penetrates through the second pressing board (233) to be connected with the second FPC board (230);

a first insulation soft pad (227) is connected to the first FPC board (220) close to the test conduction part;

the first insulating cushion (227) is provided with a slope for guiding the test conduction part to be in contact with a component to be tested.

2. The indenter of claim 1, wherein the test assembly further comprises a circuit board (210), the circuit board (210) being electrically connected to the probe assembly.

3. A ram according to claim 1, characterized in that the second pressure piece (242) is connected to the first pressure piece (241) by a micro-guide (243), and a return spring is connected between the second pressure piece (242) and the first pressure piece (241).

4. A header as claimed in claim 1, wherein said support plate (223) has magnetically attached thereto a first pressure plate (225) which presses against said first FPC board (220).

5. A chuck according to claim 1, wherein a second insulating cushion (235) is further attached to said second platen (233), and wherein the ends of said probes (231) extend through said second insulating cushion (235).