CN112433146A

CN112433146A - Fingerprint module testing arrangement

Info

Publication number: CN112433146A
Application number: CN202011460236.5A
Authority: CN
Inventors: 张海吉; 王茂
Original assignee: Kunshanqiu Titanium Biometric Technology Co Ltd
Current assignee: Kunshanqiu Titanium Biometric Technology Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-03-02

Abstract

The invention discloses a fingerprint module testing device, relates to the technical field of fingerprint module testing, and solves the technical problems that the connector and a transfer circuit board of a fingerprint module are easily damaged and inconvenient to operate in the conventional testing device. The fingerprint module is detachably connected with the switching circuit board; the thimble assembly is electrically connected with the switching circuit board and comprises a thimble; the connector makes the fingerprint chip and the switching circuit board be conducted through the contact with the thimble. According to the fingerprint module, the thimble assembly is arranged on the switching circuit board, so that the connector on the fingerprint module is conducted in a contact mode with the thimble on the switching circuit board, compared with the prior art, the manual plugging and buckling actions are not needed, the operation process of the fingerprint module is simplified, and the efficiency of the fingerprint module testing work is improved.

Description

Fingerprint module testing arrangement

Technical Field

The invention relates to the technical field of fingerprint module testing, in particular to a fingerprint module testing device.

Background

The fingerprint identification technology is widely applied to various commercial activities, and particularly, the fingerprint module becomes a core component of electronic products such as mobile phones, tablets or computers. The fingerprint module need test before leaving the factory usually, through the mode that switches on connector on the fingerprint module and switching circuit board, makes the test mainboard carry out module functional test to the fingerprint image signal that the fingerprint chip acquireed.

In the prior art, a female fastening seat is usually disposed on the transfer circuit board, and a connector on the fingerprint module is connected to the female fastening seat in a plugging and unplugging manner, so that the connector and the transfer circuit board are connected. However, when changing different fingerprint modules that await measuring, owing to need carry out the lock respectively to the connector of each fingerprint module and connect, frequent manual plug and lock action leads to the damage of female seat of lock and connector very easily, causes the increase of fingerprint module detection cost from this. In addition, still bear the fingerprint module through the support plate among the prior art, because the thickness of support plate is thicker, lead to fingerprint module test work face highly higher, the tester of being not convenient for carries out test operation to the fingerprint module.

Disclosure of Invention

In view of the above, an object of the present invention is to overcome the deficiencies of the prior art, and to provide a testing apparatus for a fingerprint module, so as to solve the technical problems that the connector and the adapting circuit board of the fingerprint module are easily damaged and are inconvenient to operate in the prior art.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the utility model provides a fingerprint module testing arrangement, the fingerprint module includes mutual electric connection's fingerprint chip, fingerprint circuit board and connector, testing arrangement includes:

the fingerprint module is detachably connected with the switching circuit board; and the number of the first and second groups,

the thimble assembly is electrically connected with the switching circuit board and comprises a thimble;

the connector makes the fingerprint chip and the switching circuit board be conducted through the contact with the thimble.

On the basis of the technical scheme, the fingerprint module testing device can be further improved as follows.

Optionally, the thimble assembly includes at least two rows of thimbles, the two rows of thimbles are both electrically connected with the circuit board, a part of the thimbles in the two rows of thimbles is electrically connected with the adapter circuit board, and the rest of the thimbles in the two rows of thimbles are exposed.

Optionally, the fingerprint chip and the connector are located on different sides of the fingerprint circuit board, the adapter circuit board is provided with a through hole for the connector to pass through, and the connector passes through the through hole and then is electrically connected with the thimble.

Optionally, the thimble assembly further includes a carrier block for carrying the thimble and the circuit board, the carrier block is connected to the through hole of the adapting circuit board through a connecting piece, and the exposed thimble faces the inside of the through hole.

Optionally, the thimble is connected respectively through electrically conductive piece in the switching circuit board with between the circuit board, the fingerprint circuit board is provided with the preforming that is convenient for the connector is installed and is torn open, the preforming with the fingerprint chip is located the same side of fingerprint circuit board.

Optionally, two U-shaped pipe fittings are arranged between the adapter circuit board and the circuit board, spring pins are installed in two limb pipes of each U-shaped pipe fitting, one of the spring pins in the limb pipe is electrically connected with the adapter circuit board through a conductive piece, the other spring pin in the limb pipe is exposed, and the bottom of each U-shaped pipe fitting is electrically connected with the circuit board.

Optionally, the fingerprint chip and the connector are located on the same side face of the fingerprint circuit board, the switching circuit board is provided with a slot hole for installing the fingerprint circuit board, the fingerprint circuit board is installed behind the slot hole, and the connector is electrically connected with the thimble.

Optionally, the switching circuit board is connected with a gland suspended above the slot, the thimble assembly is connected to the gland, and the thimble faces the slot.

Optionally, the thimble assembly further includes a carrier block for carrying the thimble and the circuit board, a through hole is formed in the press cover, the carrier block is connected with the circuit board through a connector, the circuit board is connected to the press cover through a connector, and the carrier block is located in the through hole; alternatively, the first and second electrodes may be,

the press cover is provided with a counter bore, and the circuit board and the carrier block are installed in the counter bore through a connecting piece.

Optionally, the switching circuit board is connected with a supporting plate for supporting the switching circuit board, the switching circuit board is provided with a mounting groove for mounting the fingerprint circuit board, the fingerprint chip generates a fingerprint image signal through a pressure head, and the switching circuit board is connected with a flat cable interface for outputting the fingerprint image signal.

Compared with the prior art, the fingerprint module testing device provided by the invention has the beneficial effects that:

according to the fingerprint module, the thimble assembly is arranged on the switching circuit board, so that the connector on the fingerprint module is conducted in a contact mode with the thimble on the switching circuit board, compared with the prior art, the manual plugging and buckling actions are not needed, the operation process of the fingerprint module is simplified, and the efficiency of the fingerprint module testing work is improved. In addition, compared with the prior art, the invention also cancels the design of the carrier plate, reduces the height of the test working surface and is more convenient for the operation of the tester.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art fingerprint module testing device;

FIG. 2 is a schematic structural diagram of an embodiment of a fingerprint module testing device according to the present invention;

FIG. 3 is an enlarged schematic view of the ejector pin assembly of FIG. 2;

FIG. 4 is a schematic structural view of another embodiment of the ejector pin assembly of FIG. 2;

FIG. 5 is a schematic structural diagram of another embodiment of a fingerprint module testing device according to the present invention;

FIG. 6 is an enlarged schematic view of the ejector pin assembly of FIG. 5;

FIG. 7 is a schematic structural view of another embodiment of the ejector pin assembly of FIG. 5.

In the figure:

1-fingerprint chip; 2-a fingerprint circuit board; 3-a connector; 4-switching circuit board;

5, a thimble assembly; 51-a thimble; 52-a circuit board; 53-a carrier block; 54-a connector; 55-a conductive member; 56-U-shaped pipe;

6, a supporting plate; 7-flat cable interface; 81-tabletting; 82, pressing a cover; 9-a pressure head; 10-a through hole; 11-slotted hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention and are not to be taken as a comprehensive embodiment. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Example 1:

as shown in fig. 1, a fingerprint module testing apparatus in the prior art includes a base plate a, a transfer circuit board b and a carrier plate c. A through hole is arranged on the carrier plate c, and a buckling female seat d is welded in the through hole. When testing the fingerprint module, at first will be connected with fingerprint chip e's fingerprint circuit board f and install on support plate c. Then through the connector g on the fingerprint circuit board f with the lock of the female seat d of lock be connected, realize switching on of fingerprint module and switching circuit board b. After the pressure head h pressed the surface at fingerprint chip e, fingerprint chip e sent the fingerprint image signal who obtains to the test mainboard on by winding displacement interface i through switching circuit board b to carry out functional test to the fingerprint module. However, frequent manual insertion and removal and engagement between the connector g and the female engagement base d easily cause damage to the connector g and the female engagement base d.

The invention provides a fingerprint module testing device, as shown in fig. 2, comprising a switching circuit board 4 and a thimble assembly 5. The mounting groove has been seted up to the upper surface of switching circuit board 4 for install fingerprint circuit board 2. Along the extending direction of the fingerprint circuit board 2, a through hole 10 corresponding to the position of the connector 3 of the fingerprint circuit board 2 is arranged on the switching circuit board 4, and the aperture of the through hole 10 is matched with the outer contour of the connector 3. The thimble assembly 5 is connected below the adapting circuit board 4 at a position of the through hole 10, and a support plate 6 is connected below the adapting circuit board 4 for supporting the adapting circuit board 4. The supporting plate 6 is provided with a groove positioned at the position of the thimble assembly 5, and the thimble assembly 5 is arranged in the groove on the supporting plate 6.

As shown in fig. 3, the fingerprint chip 1 is located above the fingerprint circuit board 2, and the connector 3 is located below the fingerprint circuit board 2. The thimble assembly 5 includes thimbles 51, a circuit board 52, a carrier block 53 and a connector 54, the thimbles 51 have four rows, and the thimbles 51 and the circuit board 52 are carried in the carrier block 53. The bottoms of the outer two rows of pins 51 are electrically connected to the upper surface of the circuit board 52 through a conductive member 55, and the tops of the outer two rows of pins 51 are electrically connected to the bottom of the adapting circuit board 4 through a conductive member 55. The bottoms of the two rows of thimble 51 close to the inner side are electrically connected with the conductive elements 55 at the bottoms of the two rows of thimble 51 close to the outer side, and the tops of the two rows of thimble 51 close to the inner side are exposed in the through hole 10. The entire carrier block 53 is attached to the bottom of the relay circuit board 4 by a connector 54. The conductive member 55 includes, but is not limited to, a pad or a conductive metal sheet, and the connecting member 54 includes, but is not limited to, a stud, a screw or a pin.

As shown in fig. 2, a pressing piece 81 located on the same side surface as the fingerprint chip 1 is connected to the fingerprint circuit board 2, and the pressing piece 81 is located above the connector 3. When the fingerprint module needs to be tested, the fingerprint circuit board 2 is firstly installed in the installation groove on the adapter circuit board 4. Then, the connector 3 on the fingerprint circuit board 2 is mounted in the through hole 10, and the pressing piece 81 is pressed down to conduct the connector 3 with the exposed thimble 51 on the adapting circuit board 4. The pressure head 9 is pressed and is generated fingerprint image signal on fingerprint chip 1, and switching circuit board 4 carries fingerprint image signal to test mainboard through the winding displacement interface 7 of connecting above that to accomplish the test of fingerprint module.

When the fingerprint module test is accomplished the back and need be changed next a set of fingerprint module, scratch that can be convenient through preforming 81 and play connector 3, make connector 3 and thimble 51 separation to realize fingerprint module and switching circuit board 4's separation, so that change next a set of fingerprint module and test. Whole process convenient operation is favorable to improving the efficiency of software testing of fingerprint module.

This embodiment will expose thimble 51 design for ascending back-off structural style, switch on through connector 3 mode downwards with the contact of exposing thimble 51, need not the action of manual plug and lock, has simplified the operation process of fingerprint module, has promoted fingerprint module test work's efficiency, has protected connector 3 and adapter circuit board 4. Meanwhile, compared with the prior art, the invention also cancels the design of the carrier plate c, reduces the height of the test working surface and is more convenient for the operation of a tester. Mounting groove and through-hole 10 have realized the location to the fingerprint module, have guaranteed the accuracy of fingerprint module test.

It is understood that in the present embodiment, the electrical connection between the thimble 51 and the adapting circuit board 4 may be a contact connection. That is, when the carrier block 53 is connected to the adapting circuit board 4, the thimble 51 is conducted with the adapting circuit board 4; when the carrier block 53 is detached from the adapting circuit board 4, the thimble 51 is disconnected from the adapting circuit board 4. In this way, the carrier block 53 can be detachably connected with the adapter circuit board 4, so that the thimble assembly 5 can be replaced conveniently. According to different test habits, the aperture of the through hole 10 can be in transition fit with the connector 3 or in clearance fit with the connector. Of course, also can set up the linkage between preforming 81 and pressure head 9, make preforming 81 and pressure head 9 press to switching circuit board 4 simultaneously to accomplish the functional test of fingerprint module, make things convenient for tester's operation.

Example 2:

the following structure may also be adopted in this embodiment to replace the thimble 51 in the above embodiment, and the specific structure is as follows:

as shown in fig. 4, two U-shaped pipes 56 are provided between the relay circuit board 4 and the circuit board 52, the U-shaped pipe 56 has two hollow-cavity-type limb pipes, and spring pins are respectively installed in the two limb pipes. The spring needle in one limb tube is electrically connected to the bottom of the adapting circuit board 4 through a conductive piece 55, the spring needle in the other limb tube is exposed out of the through hole 10, and the bottom of the U-shaped tube 56 is electrically connected to the circuit board 52. The two U-shaped tubes 56 and the circuit board 52 are mounted in the carrier block 53, and the carrier block 53 is connected below the through hole 10 of the relay circuit board 4 by the connector 54, so that the pogo pin is pressed against the bottom of the relay circuit board 4.

When pressing preforming 81, connector 3 switches on with adapter circuit board 4 through compressing tightly the pogo pin in the U-shaped pipe fitting 56, can realize the function of fingerprint module test equally. The two U-shaped pipe fittings 56 are arranged between the adapting circuit board 4 and the circuit board 52 in an inverted manner, and can also achieve the function of conducting between the connector 3 and the adapting circuit board 4.

Example 3:

as another embodiment, as shown in fig. 5, the fingerprint chip 1 and the connector 3 are both located on the upper surface of the fingerprint circuit board 2. A slotted hole 11 used for installing the fingerprint circuit board 2 is formed in the transit circuit board 4, an L-shaped gland 82 is connected to the transit circuit board 4, the short edge of the gland 82 is connected with the transit circuit board 4, and the long edge of the gland 82 is suspended above the slotted hole 11.

As shown in fig. 6, the pressing cover 82 is provided with a through hole, the carrier block 53 is connected to the circuit board 52 through the connector 54, the circuit board 52 is connected to the pressing cover 82 through the connector 54, and the carrier block 53 is located in the through hole. Two rows of the four rows of the thimble 51 are electrically connected between the bottom of the circuit board 52 and the top of the adapting circuit board 4 through the conductive pieces 55, the tops of the other two rows of the thimble 51 are electrically connected to the bottom of the circuit board 52 through the conductive pieces 55, and the bottoms of the other two rows of the thimble 51 are exposed in the slot 11. The four rows of thimbles 51 are all located above the adapting circuit board 4. The structures of the connecting member 54 and the conductive member 55 are the same as those of the connecting member 54 and the conductive member 55 in embodiment 1.

As shown in fig. 6, when performing the fingerprint module test, the fingerprint circuit board 2 is first installed in the slot 11, and the connector 3 is inserted into the slot 11. Since the connector 3 is always located in a fixed position on the fingerprint circuit board 2. At this time, the connector 3 is located below the two rows of exposed ejector pins 51, and the two rows of exposed ejector pins 51 are directly contacted with the connector 3, so that the connector 3 is conducted with the transfer circuit board 4, and the fingerprint module can be subjected to function test.

When the fingerprint module test is accomplished the back and need be changed next a set of fingerprint module, directly extract fingerprint circuit board 2, make connector 3 and thimble 51 separation to realize fingerprint module and switching circuit board 4's separation, so that change next a set of fingerprint module and test. Whole process convenient operation is favorable to improving the efficiency of software testing of fingerprint module.

In the embodiment, the exposed thimble 51 is designed into a downward positive buckling structural form, and is conducted in a mode of contacting with the connector 3 downwards through the exposed thimble 51, so that the manual plugging and buckling actions are not needed, the operation process of the fingerprint module is simplified, the efficiency of the fingerprint module testing work is improved, and the connector 3 and the transfer circuit board 4 are protected. The whole body of the fingerprint circuit board 2 is positioned through the slotted hole 11, and the accuracy of the fingerprint module group test is also ensured.

Example 4:

the present embodiment may also adopt the following structure to replace the gland 82 in the above embodiment, and the specific structure is as follows:

as shown in fig. 7, a counter bore facing the direction of the slot 11 is formed in the pressing cover 82, the carrier block 53 is installed in the counter bore, the circuit board 52 is installed between the carrier block 53 and the pressing cover 82, and both the circuit board 52 and the carrier block 53 are installed in the counter bore through the connecting piece 54.

In the present embodiment, the pressing cover 82 is designed as a counterbore structure, and the exposed thimble 51 can also be designed as a downward right-hand structure, so that the exposed thimble 51 can be conducted with the adapter circuit board 4 in a contact manner with the connector 3 downward.

According to the fingerprint module testing device, the thimble 51 is designed to be in an inverted buckling or right buckling structure, so that the fingerprint module testing device is suitable for the situation that the fingerprint chip 1 and the connector 3 are positioned on the same side surface or different side surfaces of the fingerprint circuit board 2, and the application range of the fingerprint module testing device is expanded. The whole test process of fingerprint module has avoided the action of lock between connector 3 and the female seat of lock for current testing arrangement, when improving efficiency of software testing, adopts the mode of switching on of contact, has still protected connector 3 and switching circuit board 4, has prolonged testing arrangement's life.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims

1. The utility model provides a fingerprint module testing arrangement, its characterized in that, the fingerprint module includes mutual electric connection's fingerprint chip (1), fingerprint circuit board (2) and connector (3), testing arrangement includes:

the fingerprint module is detachably connected with the switching circuit board (4); and the number of the first and second groups,

the thimble assembly (5), the said thimble assembly (5) is connected with said switching circuit board (4) electrically, the said thimble assembly (5) includes the thimble (51);

the connector (3) is in contact with the ejector pin (51) to enable the fingerprint chip (1) and the switching circuit board (4) to be conducted.

2. The fingerprint module testing device of claim 1, wherein the thimble assembly (5) comprises at least two rows of thimbles (51), each of the at least two rows of thimbles (51) is electrically connected with a circuit board (52), a part of the thimbles (51) in the at least two rows of thimbles (51) are electrically connected with the adapting circuit board (4), and the rest of the thimbles (51) in the at least two rows of thimbles (51) are exposed.

3. The fingerprint module testing device of claim 1, wherein the fingerprint chip (1) and the connector (3) are located on different sides of the fingerprint circuit board (2), the adapting circuit board (4) is provided with a through hole (10) for the connector (3) to pass through, and the connector (3) passes through the through hole (10) and then is electrically connected with the thimble (51).

4. The fingerprint module testing device according to claim 3, wherein the thimble assembly (5) further comprises a carrier block (53) for carrying the thimble (51) and the circuit board (52), the carrier block (53) is connected to the through hole (10) of the adapting circuit board (4) through a connector (54), and the exposed thimble (51) faces into the through hole (10).

5. The fingerprint module testing device of claim 4, wherein the thimble (51) is connected between the adapting circuit board (4) and the circuit board (52) through a conductive member (55), the fingerprint circuit board (2) is provided with a pressing piece (81) for facilitating the installation and removal of the connector (3), and the pressing piece (81) and the fingerprint chip (1) are located on the same side surface of the fingerprint circuit board (2).

6. The fingerprint module testing device of claim 2, wherein two U-shaped pipe fittings (56) are arranged between the adapter circuit board (4) and the circuit board (52), two limb pipes of the U-shaped pipe fittings (56) are provided with spring pins, one of the spring pins in one limb pipe is electrically connected with the adapter circuit board (4) through a conductive piece (55), the other spring pin in the other limb pipe is exposed, and the bottom of the U-shaped pipe fitting (56) is electrically connected with the circuit board (52).

7. The fingerprint module testing device of claim 1, wherein the fingerprint chip (1) and the connector (3) are located on the same side of the fingerprint circuit board (2), the adapting circuit board (4) is provided with a slot (11) for mounting the fingerprint circuit board (2), and after the fingerprint circuit board (2) is mounted in the slot (11), the connector (3) is electrically connected with the thimble (51).

8. The fingerprint module testing device of claim 7, wherein the adapting circuit board (4) is connected with a gland (82) suspended above the slot (11), the thimble assembly (5) is connected on the gland (82), and the thimble (51) faces into the slot (11).

9. The fingerprint module testing device according to claim 8, wherein the thimble assembly (5) further comprises a carrier block (53) for carrying the thimble (51) and the circuit board (52), the pressing cover (82) is provided with a through hole, the carrier block (53) is connected with the circuit board (52) through a connector (54), the circuit board (52) is connected with the pressing cover (82) through the connector (54), and the carrier block (53) is located in the through hole; alternatively, the first and second electrodes may be,

the pressing cover (82) is provided with a counter bore, and the circuit board (52) and the carrying block (53) are arranged in the counter bore through a connecting piece (54).

10. The fingerprint module testing device of any one of claims 1 to 9, wherein the adapting circuit board (4) is connected with a supporting plate (6) for supporting the adapting circuit board (4), the adapting circuit board (4) is provided with a mounting groove for mounting the fingerprint circuit board (2), the fingerprint chip (1) generates a fingerprint image signal through a pressure head (9), and the adapting circuit board (4) is connected with a flat cable interface (7) for outputting the fingerprint image signal.