CN217846543U

CN217846543U - Display screen test fixture

Info

Publication number: CN217846543U
Application number: CN202221310275.1U
Authority: CN
Inventors: 昌华
Original assignee: Jiangxi Holitech Technology Co Ltd
Current assignee: Jiangxi Holitech Technology Co Ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-11-18
Anticipated expiration: 2032-05-27

Abstract

The utility model relates to the technical field of test fixtures, in particular to a display screen test fixture, which comprises a fixture body, wherein the fixture body comprises a mounting plate and a test substrate which is fixed on the mounting plate and used for bearing FPC (flexible printed circuit), and the test substrate comprises a positioning groove for placing FPC, a first stopper for limiting the left and right movement of FPC and a second stopper for limiting the front and back movement of FPC; the jig body further comprises a transverse pressing strip and a fixing assembly, wherein the transverse pressing strip is used for rotating towards the FPC direction and abutting against the upper surface of the FPC, and the fixing assembly is used for fixing the transverse pressing strip. The jig is simple in structure, and not only can the testing efficiency be improved, but also the testing precision can be improved, and the testing cost can be reduced.

Description

Display screen test fixture

Technical Field

The utility model relates to a test fixture technical field, what specifically say is a display screen test fixture.

Background

The black and white display screen has been developed for decades and is widely applied to the fields of instruments, white appliances, industrial control, ETC and the like; enterprises can optimize the labor cost and improve the benefit according to the cost reduction and efficiency improvement principle, so that corresponding tool fixtures can be designed for testing aiming at the functions of products, the production efficiency and the product quality are accelerated, and the production cost is reduced.

In the manufacturing process of the display screen, the detection process is an essential part. The traditional black-and-white display screen test adopts a positioning FPC (flexible printed circuit) for testing, and for products with higher requirements on FPC process, deviation is easy to generate, so that test data are unstable, and the test accuracy is insufficient; at this moment, the jig needs to be adjusted again, the repeatability and the reproducibility of the testing jig are low, and the FPC of each specification needs to be prepared with one jig independently, so that the production testing efficiency is reduced, the waste is caused, and the production and manufacturing cost is increased.

SUMMERY OF THE UTILITY MODEL

For solving the defects of the prior art, the utility model provides a simple structure just improves a display screen test fixture of efficiency of software testing and test precision.

In order to achieve the purpose, the utility model discloses a realize through following scheme, including the tool body, the tool body includes mounting panel and fixes the test substrate who is used for bearing FPC on the mounting panel, the test substrate includes the constant head tank that supplies FPC to place, is used for restricting FPC and moves about first stopper and is used for restricting FPC's second stopper of back-and-forth movement; the jig body further comprises a transverse pressing strip and a fixing assembly, wherein the transverse pressing strip is used for rotating towards the FPC direction and abutting against the upper surface of the FPC, and the fixing assembly is used for fixing the transverse pressing strip.

The utility model has the advantages and positive effects that: the jig body mainly comprises an installation plate and a test substrate, wherein the test substrate is fixedly connected to the installation plate and used for testing the FPC, and a limiting block used for limiting left-right displacement and front-back displacement of the FPC is arranged on the test substrate; the FPC is placed in a corresponding positioning groove on the test substrate, after the FPC is fixed, a second limiting block is placed close to one side of the FPC in the front-back direction and used for limiting the movement of the FPC in the front-back direction, then a first limiting block is placed at one side of the FPC in the left-right direction and used for limiting the movement of the FPC in the left-right direction, when the FPC is tested in subsequent batches, the FPC can be accurately positioned as long as the FPC is directly abutted against the positioning groove, the structure is simple, and the test efficiency and the test accuracy are improved; the fixing assembly is connected to the mounting plate, the transverse pressing strip which is used for rotating towards the FPC and pressing on the upper surface of the FPC in a supported mode is connected to the fixing assembly, the transverse pressing strip is always pressed on the upper surface of the FPC in the testing process, stability of the testing process is guaranteed, and testing accuracy is improved.

Preferably, a controller is connected below the mounting plate, and the controller is electrically connected with the test substrate. The setting like this, with controller direct mount on test fixture, can increase test fixture's function, need not overlap joint controller in addition in the test procedure, only need connect the power and just can carry out FPC crimping test.

Preferably, be equipped with the switch groove on the mounting panel and connect switch in the switch groove, the switch with the controller electricity is connected, the switch is used for working as lateral pressure strip produces trigger signal when supporting to press FPC, the controller is used for receiving the trigger signal of switch and control test substrate tests. The setting like this, can trigger the switch simultaneously when the horizontal layering supports and presses FPC, reduced the test step, need not go the push switch again after supporting and pressing FPC during the test, improved efficiency of software testing.

Preferably, the controller is electrically connected with a power line, one end of the power line is electrically connected to the controller, and the other end of the power line is provided with a quick connector. By the arrangement, the power supply can be plugged and unplugged quickly, and convenience is brought to a tester to electrify before testing and finish the arrangement after the testing.

Preferably, the mounting plate is provided with a long slot for the fixing component to move back and forth. By the arrangement, the fixing assembly can move back and forth within the length range of the long-line groove, so that FPCs with different length specifications can be tested, and the test range is enlarged.

Preferably, the fixing component comprises two supporting blocks and a rotating shaft which are arranged on the mounting plate at intervals, and one end of the transverse pressing strip is located between the two supporting blocks and is rotatably connected with the two supporting blocks through the rotating shaft. The transverse pressing strip can be turned over through the rotating shaft between the two supporting blocks, the transverse pressing strip can be turned upwards to lift up before testing is started, the transverse pressing strip can be turned downwards after the FPC is positioned, and the transverse pressing strip is pressed on the upper surface of the FPC to perform crimping testing.

Preferably, the fixing component comprises a screw, the head of the screw faces downwards, and a screw rod of the screw penetrates through the long-line groove from bottom to top and is in threaded connection with the supporting block. The screw head of the screw can penetrate through the long travel groove to be connected with the supporting block, and the screw head abuts against the bottom surface of the long travel groove; the supporting block is driven to move at any position within the length range of the long groove, the transverse pressing strip is driven to move back and forth on the mounting plate, the FPCs with different specifications and lengths can be tested on the jig, and the testing cost is reduced.

Preferably, the lower end face of the transverse pressing strip is connected with an elastic insulating block used for abutting against the upper surface of the FPC. Set up like this, the elasticity collets can provide a packing force to the FPC in the constant head tank, improves the stability of test.

Drawings

FIG. 1 is a top view of a display screen testing fixture;

FIG. 2 is a schematic diagram of FPC positioning of a display screen testing fixture;

fig. 3 is another schematic view of a display screen testing fixture.

1. Mounting a plate; 101. a long groove; 102. a groove; 103. a screw; 2. FPC; 3. testing the substrate; 4. positioning a groove; 401. a first stopper; 402. a second limiting block; 5. transverse layering; 501. an elastic insulating block; 6. a support block; 601. a rotating shaft; 7. a controller; 701. a power line; 702. a quick connector; 8. a switch; 801. a switch slot; 9. and a support plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the above drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and fig. 2, the embodiment of the utility model provides a display screen test fixture has simple structure, improves efficiency of software testing and the effect of improving the test precision. Fixedly connecting a test substrate 3 in a threaded hole of an installation plate 1 by using a screw 103, placing an FPC2 in a corresponding positioning groove on the test substrate 3, placing a second limiting block 402 close to one side of the FPC2 along the front-back direction after the FPC2 is fixed, and fixing by using 502 glue, wherein the second limiting block 402 is used for limiting the movement of the FPC2 along the front-back direction; then place a first stopper 401 in FPC2 left and right sides one side, also fix with 502 glue for the removal about restriction FPC2, when subsequent batch test, as long as directly support FPC2 and just can realize FPC2 accurate location in the constant head tank 4, simple structure just has improved efficiency of software testing and test precision. Can blow second stopper 402 and first stopper 401 with hot-blast rifle when switching other type FPC2 products, make 502 glue ineffectual, then remove second stopper 402 and first stopper 401, relocate according to new FPC2, can reduce the waste of stopper like this, reduced corresponding test cost.

As shown in fig. 3, after the FPC2 is fixed in the positioning groove 4, a compression test is performed with the transverse compression bar 5 movably connected between the fixing components; the fixing component comprises two supporting blocks 6, the transverse pressing strip 5 is connected between the two supporting blocks 6, a transverse groove is formed in each supporting block 6, a through hole is formed in one end of each transverse pressing strip 5, a rotating shaft 601 penetrates through the through hole, enters the transverse groove and is in clearance fit with the through hole and the transverse groove, an arc-shaped groove is formed in the tail end of each transverse groove, one end of each arc-shaped groove is communicated with the corresponding transverse groove, the transverse pressing strips 5 can be moved leftwards and rightwards, when the arc-shaped groove is moved leftwards and rightwards to the position of the corresponding transverse pressing strip 5, the elastic insulating blocks 501 are just arranged on the upper surface of the FPC2, the transverse pressing strips 5 are driven downwards along the arc-shaped grooves, and the elastic insulating blocks 501 are just abutted to the upper surface of the FPC 2. In the embodiment, most preferably, two supporting blocks 6 are adopted, a transverse pressing strip 5 is connected between the two supporting blocks 6 through a rotating shaft 601, a hole for the rotating shaft 601 to be in clearance fit is formed in each supporting block 6, and the transverse pressing strip 5 can be ensured to turn around the axis of the rotating shaft 601 after the transverse pressing strip 5 and the supporting blocks 6 are in clearance fit together through the rotating shaft 601. An elastic insulating block 501 is bonded on the transverse pressing strip 5 through glue, the shape of the elastic insulating block is matched with that of the positioning groove 4, when the transverse pressing strip is turned over and pressed down, the elastic insulating block can be just pressed on the FPC2, further pressing force is provided for the FPC2, stability of the testing process is improved, plastic or silica gel gaskets can be adopted, the silica gel gaskets are preferably adopted, stability of the testing process is guaranteed, and testing accuracy and testing efficiency are improved.

As shown in fig. 1 and 3, in order to further optimize the above solution, the mounting plate 1 is provided with a long groove 101 for connecting the supporting block 6, and a screw 103 penetrates through the long groove 101 to fix the supporting block 6 at any position within the length range of the long groove 101. The screw 103 passes through the long-line groove 101 to be matched and fixed with a threaded hole at the bottom of the supporting block 6, and the supporting block 6 can be fixed at any position in the length range of the long-line groove 101, so that the transverse pressing bar 5 is driven to move on the mounting plate 1, the testing range of the FPC2 is increased, the FPC2 with different specifications and lengths can be tested on the jig, the testing of the FPC2 with multiple specifications of one jig is realized, the jigs of other specifications of FPC2 are not required to be additionally developed or designed, and the corresponding testing cost is reduced. A groove 102 communicated with the long groove 101 is arranged below the mounting plate 1, the width of the groove 102 is larger than that of the long groove 101 and slightly larger than the head of the screw 103, the length of the groove 102 is larger than or equal to that of the long groove 101, and the preferable length of the groove 102 is the same as that of the long groove 101. The groove 102 arranged below the long-line groove 101 can be used for placing the head of the screw 103, so that the bottom of the mounting plate 1 is attractive, no convex connecting piece is exposed, the groove 102 is similar to a counter bore, the connecting strength of the connecting piece can be increased, and the stability of the testing process is ensured.

As shown in fig. 1 and fig. 3, in order to further optimize the above scheme, a controller 7 is fixed below the mounting plate 1 by bolts, the controller 7 is electrically connected with the test substrate 2 and the switch 8, the switch 8 is fixed in a switch groove 801 on the mounting plate 1 by bolts, the switch 8 is arranged at the other side of the mounting plate 1 opposite to the supporting block 6, the switch 8 is always kept in the abutting range of the transverse pressing strip 5, when the transverse pressing strip 5 abuts against the test point of the FPC2, the switch 8 is triggered at the same time, the controller 7 controls the FPC2 to start testing after receiving a trigger signal of the switch 8, the electric quantity of an LCD electrically connected with the FPC2 judges whether the LCD display is normal; the preferred switch 8 is a microswitch; the trigger signal referred to in this embodiment is an on-off signal of the switch 8, and is in an off state when not pressed by the transverse pressing bar 5, and once the transverse pressing bar 5 is pressed to a position, the switch 8 is turned on immediately. The operation steps of testing personnel are reduced, the switch 8 is closed when the testing point of the FPC2 is pressed, the operation flow is reduced, and the testing efficiency is improved.

In order to further optimize the above scheme, the controller 7 is electrically connected with a power line 701, one end of the power line 701 is electrically connected to the controller 7, and the other end of the power line 701 is provided with a quick connector 702 for quick connection with an external power supply. Therefore, the power supply can be plugged and pulled quickly, the testing efficiency is improved, and meanwhile, the space on the back of the mounting plate 1 is utilized, so that the cost is reduced. Two sides of the lower surface of the mounting plate 1 are respectively connected with a supporting plate 9. Can support mounting panel 1 like this, prevent that 1 below of mounting panel subassembly is placing, is removing or the testing process is impaired, guarantee the steady of testing process, improve the test precision.

The utility model discloses an optimal embodiment does: fixedly connecting a test substrate 3 in a threaded hole of an installation plate 1 by using a bolt, placing an FPC2 in a positioning groove 4 on the test substrate 3, placing a second limiting block 402 on one side close to the front and back direction of the FPC2 after the FPC2 is fixed by hands, and fixing by using 502 glue to limit the movement of the FPC2 along the front and back direction; then place a first stopper 401 in FPC2 left and right sides one side, also fix with 502 glue, be used for restricting FPC2 along the removal of left and right sides, can blow second stopper 402 and first stopper 401 with the hot-blast rifle when needing to switch other types of FPC2 products, make 502 glue lose the bonding effect, then remove second stopper 402 and first stopper 401, carry out spacing again according to new FPC2 specification, be connected with two supporting shoes 6 in one side of mounting panel 1, horizontal layering 5 and two supporting shoes 6 are put together with a pivot 601 cooperation between, guarantee that horizontal layering 5 can overturn around pivot 601 center. A silica gel gasket is bonded on the transverse pressing strip 5 by 502 glue for abutting and fixing the FPC2 after positioning; the mounting plate 1 is provided with a long groove 101 for moving the supporting block 6, and the supporting block 6 can be fixed at any position within the length range of the long groove 101 by a screw 103 penetrating through the long groove 101. The screw 103 penetrates through the long-line groove 101 to be matched and fixed with the threaded hole at the bottom of the supporting block 6, the supporting block 6 can be fixed at any position within the length range of the long-line groove 101, a groove 102 communicated with the long-line groove 101 is arranged below the mounting plate 1, the width of the groove 102 is larger than that of the long-line groove 101 and is slightly larger than that of the head of the screw 103, and the length of the groove 102 is equal to that of the long-line groove 101. This groove 102, provided below the elongated slot 101, can be used to support the head of the screw 103; switch 8 is fixed in switch groove 801 with the bolt, and this switch 8 is micro-gap switch, and bolted connection is fixed in mounting panel 1 below for controller 7, and test substrate 3 and switch 8 all are connected with controller 7 electricity, are equipped with power cord 701 on the controller 7, and the one end electricity of power cord 701 is connected on controller 7, and the other end is equipped with quick-operation joint 702, and wherein mounting panel 1, supporting shoe 6, backup pad 9, horizontal layering 5 all adopt transparent ya keli preparation.

The embodiments of the present disclosure are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display screen test fixture comprises a fixture body, wherein the fixture body comprises an installation plate (1) and a test substrate (3) which is fixed on the installation plate (1) and used for bearing an FPC (2), and is characterized in that the test substrate (3) comprises a positioning groove (4) for placing the FPC (2), a first limiting block (401) for limiting the FPC (2) to move left and right and a second limiting block (402) for limiting the FPC (2) to move back and forth; the jig body further comprises a transverse pressing strip (5) which rotates towards the direction of the FPC (2) and abuts against the upper surface of the FPC (2), and a fixing assembly for the transverse pressing strip (5) to rotate.

2. The display screen test fixture according to claim 1, wherein a controller (7) is connected to the mounting plate (1), and the controller (7) is electrically connected to the test substrate (3).

3. The display screen test fixture according to claim 2, wherein a switch groove (801) and a switch (8) arranged in the switch groove (801) are arranged on the mounting plate (1), the switch (8) is electrically connected with the controller (7), the switch (8) is used for generating a trigger signal when the transverse pressing bar (5) presses the FPC (2), and the controller (7) is used for receiving the trigger signal of the switch (8) and testing the FPC (2).

4. The display screen test fixture according to claim 3, wherein the controller (7) is electrically connected with a power line (701), one end of the power line (701) is electrically connected to the controller (7), and the other end of the power line (701) is provided with a quick connector (702).

5. The display screen test fixture according to any one of claims 1-4, wherein the mounting plate (1) is provided with a long slot (101) for the fixing component to move back and forth.

6. The display screen test fixture according to claim 5, wherein the fixing component comprises two supporting blocks (6) and a rotating shaft (601) which are arranged on the mounting plate (1) at intervals, one end of the transverse pressing bar (5) is located between the two supporting blocks (6) and is rotatably connected with the two supporting blocks (6) through the rotating shaft (601).

7. The display screen test fixture according to claim 6, wherein the fixing component comprises a screw (103), the head of the screw (103) faces downwards, and the screw rod of the screw (103) penetrates through the long groove (101) from bottom to top and is in threaded connection with the support block (6).

8. The display screen test fixture according to claim 5, wherein the lower end face of the transverse pressing bar (5) is provided with an elastic insulating block (501) for pressing against the upper surface of the FPC (2).