CN211426701U

CN211426701U - Board carries chip test auxiliary device

Info

Publication number: CN211426701U
Application number: CN201921895468.6U
Authority: CN
Inventors: 苏永东
Original assignee: Xinjia Digital Electronics Shenzhen Co ltd
Current assignee: Xinjia Digital Electronics Shenzhen Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-09-04
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a board carries chip test auxiliary device, it is including chip tool and outer line board of walking, set up the spacing fixed port that can cover in board year chip top on the chip tool, a plurality of metal contacts are worn to be equipped with by the inside wall of spacing fixed port, the pin one-to-one of metal contact and board year chip, the first end of outer line board of walking is located the chip tool, and a plurality of metal contacts be electric connection respectively in the first end of outer line board of walking, the second end of outer line board extends outside the chip tool, and the second end electric connection of outer line board has the many needles plug connector, when the top of board year chip is located to the spacing fixed gauze mask of chip tool, a plurality of metal contacts butt respectively in a plurality of pins of board year chip, borrow metal contact, outer line board and many needles plug connector carry board chip and external test equipment electric connection. The utility model discloses need not to change the original connection state of chip and circuit board, can avoid damaging the chip, and can be reliably connected with board year chip pin.

Description

Board carries chip test auxiliary device

Technical Field

The utility model relates to a chip test equipment especially relates to a board carries chip test auxiliary device.

Background

In the prior art, for example, electronic devices such as computers, mobile phones, game machines, etc., when detection or maintenance is needed, read-write testing is usually required for chips in circuit boards of these electronic devices, and the chips are generally taken down in the existing testing method, but this way not only damages the chips easily, but also causes scrapping of the chips or circuit boards because the chips are difficult to be re-positioned on the board, and is poor in safety and reliability.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide one kind and need not to change the original connected state of chip and circuit board, can avoid damaging chip or circuit board, board year chip test auxiliary device that can reliably be connected with board year chip pin.

In order to solve the technical problem, the utility model adopts the following technical scheme.

An auxiliary device for testing a chip on board comprises a chip jig and an external wiring board, wherein the chip jig is provided with a limiting fixing port which can cover the top of the chip on board, a plurality of metal contacts are arranged on the inner side wall of the limiting fixing opening in a penetrating manner, the metal contacts correspond to the pins of the on-board chip one by one, the first end of the external wiring board is positioned in the chip jig, and the plurality of metal contacts are respectively and electrically connected with the first end of the outer wiring board, the second end of the outer wiring board extends out of the chip jig, and the second end of the outer wiring board is electrically connected with a multi-pin plug connector, when the top of on-board chip is located to the spacing fixed gauze mask of chip tool, a plurality of metal contacts respectively the butt in a plurality of pins of on-board chip borrow by the metal contact the outer line board of walking and many needles connector clip will pin electric connection in external test equipment of on-board chip one-to-one.

Preferably, an inner wiring board is arranged in the chip jig, a plurality of metal contacts are fixed on the inner wiring board, and the outer wiring board and the inner wiring board are integrally formed.

Preferably, a plurality of metal contacts are distributed in sequence along the edge of the inner wiring board.

Preferably, the inner side wall of the limiting fixing opening is provided with a plurality of slotted holes, the slotted holes are aligned with the metal contacts one by one, the metal contacts penetrate through the slotted holes, and the metal contacts can move in the slotted holes.

Preferably, the end of the metal contact is formed with a hook bent toward the inner side of the limit fixing port.

Preferably, an inclined surface is formed on the outer side of the hook, and the hook is made to be wedge-shaped by the inclined surface.

Preferably, a cover plate is fixed on one side of the chip jig, which faces away from the limiting fixing port.

Preferably, the inner wiring board is clamped between the chip fixture and the cover plate.

Preferably, the plurality of metal contacts are respectively arranged on the left side and the right side of the inner wiring board or are distributed in a square or rectangular shape along the periphery of the inner wiring board.

The utility model discloses an on-board chip test auxiliary device, when testing, earlier with the top of on-board chip is located to the double-layered gauze mask of chip tool, then right the chip tool exerts pressure for a plurality of metal contacts respectively the butt in on-board chip's a plurality of pins treat metal contact and pin after the contact closely, will multi-needle plug connector electric connection in external test equipment the metal contact realize on-board chip and external test equipment's point-to-point electric connection under the cooperation of winding displacement and multi-needle plug connector, it is right to utilize external test equipment at last on-board chip carries out the read-write test. Compared with the prior art, the utility model discloses need not to change the original connection state of chip and circuit board, can not only avoid causing the damage to chip or circuit board, can also reliably be connected with the pin of board year chip, have one insert with usefulness, characteristics such as simple reliable, better satisfied chip test demand.

Drawings

FIG. 1 is a perspective view of the on-board chip testing aid of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an exploded view of the on-board chip testing aid of the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 3;

FIG. 5 is a second exploded view of the on-board chip testing aid of the present invention;

fig. 6 is a cross-sectional view of the on-board chip testing assisting device of the present invention.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings and examples.

The utility model discloses a board chip testing auxiliary device, the board chip is positioned on the target board to be tested, as shown in the combined drawings 1-6, which comprises a chip jig 1 and an outer wiring board 4, the chip jig 1 is provided with a spacing fixed port 2 which can cover the top of the board chip 100, the inner side wall of the spacing fixed port 2 is provided with a plurality of metal contacts 3, the metal contacts 3 are in one-to-one correspondence with the pins 101 of the board chip 100, the first end of the outer wiring board 4 is positioned in the chip jig 1, and the plurality of metal contacts 3 are respectively and electrically connected with the first end of the outer wiring board 4, the second end of the outer wiring board 4 extends out of the chip jig 1, and the second end of the outer wiring board 4 is electrically connected with a multi-needle plug connector 5, when the spacing fixed port 2 of the chip jig 1 is covered on the top of the board chip 100, the plurality of metal contacts 3 are respectively abutted to the plurality of pins 101 of the on-board chip 100, and the pins of the on-board chip 100 are electrically connected to external test equipment in a one-to-one correspondence manner by means of the metal contacts 3, the external wiring board 4 and the multi-pin connector 5.

When the device is used for testing, the top of the onboard chip 100 is covered with the limiting fixing port 2 of the chip jig 1, then pressure is applied to the chip jig 1, the plurality of metal contacts 3 are abutted to the plurality of pins 101 of the onboard chip 100 respectively, after the metal contacts 3 are tightly contacted with the pins 101, the multi-pin connector 5 is electrically connected to external testing equipment, the metal contacts 3, the external wiring board 4 and the multi-pin connector 5 are matched to realize the electrical connection between the onboard chip 100 and the external testing equipment, and finally the onboard chip 100 is tested by using the external testing equipment. Compared with the prior art, the utility model discloses need not to change the original connection state of chip and circuit board, can not only avoid causing the damage to chip or circuit board, can also reliably be connected with the pin of board year chip, have one insert with usefulness, characteristics such as simple reliable, better satisfied chip test demand.

In order to support the metal contacts 3 and electrically connect the metal contacts 3 and the external wiring board 4, in this embodiment, an internal wiring board 6 is disposed in the chip fixture 1, the plurality of metal contacts 3 are fixed on the internal wiring board 6, and the external wiring board 4 and the internal wiring board 6 are integrally formed.

Preferably, the plurality of metal contacts 3 are distributed along the edge of the inner trace board 6 in sequence. For example, the plurality of metal contacts 3 are respectively disposed on the left and right sides of the inner trace board 6 or are distributed in a square or rectangular shape along the periphery of the inner trace board 6.

In this embodiment, the inner side wall of the position-limiting fixing opening 2 is provided with a plurality of slots 20, the slots 20 are aligned with the metal contacts 3 one by one, the metal contacts 3 pass through the slots 20, and the metal contacts 3 can move in the slots 20. The slot 20 not only allows the metal contact 3 to pass through, but also provides an elastic movement space for the metal contact 3, so that the metal contact 3 is more reliably contacted with the pin 101.

In order to connect the metal contact 3 and the pin 101 more tightly, in this embodiment, a hook 30 bent toward the inner side of the position-limiting fixing opening 2 is formed at the end of the metal contact 3.

Preferably, an inclined surface 31 is formed on an outer side of the hook 30, and the hook 30 is formed in a wedge shape by the inclined surface 31. The wedge-shaped hook 30 helps to slide the metal contact 3 to the outside of the pin 101, thereby serving as a guide when clamping.

As an optimized structure, a cover plate 7 is fixed on one side of the chip jig 1, which is back to the limiting fixing port 2.

Further, the inner wiring board 6 is sandwiched between the chip fixture 1 and the cover plate 7.

In order to better describe the technical scheme of the utility model, the utility model discloses still relate to a board carries chip test auxiliary method, it is shown to combine fig. 1 to fig. 6, and this method is realized based on a device, the device is including chip tool 1 and outer wiring board 4, spacing fixed mouthful 2 has been seted up on the chip tool 1, a plurality of metal contacts 3 are worn to be equipped with by the inside wall of spacing fixed mouthful 2, the first end of outer wiring board 4 is located in the chip tool 1, and a plurality of metal contacts 3 electric connection respectively in the first end of outer wiring board 4, the second end of outer wiring board 4 to extend outside the chip tool 1, and the second end electric connection of outer wiring board 4 has many needles plug connector 5, the method includes following step:

step S1, covering the limiting fixing port 2 of the chip jig 1 on the top of the on-board chip 100;

step S2 of applying pressure to the chip jig 1 so that the plurality of metal contacts 3 abut against the plurality of leads 101 of the on-board chip 100, respectively;

step S3, electrically connecting the multi-pin connector 5 to an external test device;

step S4, testing the on-board chip 100 with an external testing device.

In the above method, the hook 30 bent toward the inner side of the position-limiting fixing hole 2 is formed at the end of the metal contact 3, and in the step S2, the hook 30 at the end of the metal contact 3 is abutted against the outer side of the pin 101 of the on-board chip 100. Through the structure, the metal contact 3 can be ensured to be accurately and reliably electrically connected with the pin 101.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary device for testing a chip on board is characterized by comprising a chip jig and an external wiring board, the chip jig is provided with a limiting fixing port which can cover the top of the on-board chip, the inner side wall of the limiting fixing port is provided with a plurality of metal contacts in a penetrating way, the metal contacts correspond to the pins of the on-board chips one by one, the first end of the external wiring board is positioned in the chip jig, and the plurality of metal contacts are respectively and electrically connected with the first end of the outer wiring board, the second end of the outer wiring board extends out of the chip jig, and the second end of the outer wiring board is electrically connected with a multi-pin plug connector, when the top of on-board chip is located to the spacing fixed gauze mask of chip tool, a plurality of metal contacts respectively the butt in a plurality of pins of on-board chip borrow by the metal contact the outer line board of walking and many needles connector clip will pin electric connection in external test equipment of on-board chip one-to-one.

2. The on-board chip testing assisting device of claim 1, wherein an inner wiring board is provided in the chip fixture, a plurality of metal contacts are fixed on the inner wiring board, and the outer wiring board and the inner wiring board are integrally formed.

3. A chip-on-board test aid as claimed in claim 2 wherein a plurality of metal contacts are distributed sequentially along the edge of said inner trace.

4. The auxiliary device for testing the chip on board of claim 1, wherein the inner side wall of the position limiting fixing opening is provided with a plurality of slotted holes, the slotted holes are aligned with the metal contacts one by one, the metal contacts penetrate through the slotted holes, and the metal contacts can move in the slotted holes.

5. An on-board chip test aid as claimed in claim 1 wherein the ends of said metal contacts are formed with hooks that bend inwardly toward the inside of said retention tabs.

6. The on-board chip testing aid of claim 5, wherein said hooks are formed with a bevel on their outer side, whereby said hooks are wedge-shaped.

7. The auxiliary device for testing an on-board chip of claim 2, wherein a cover plate is fixed on a side of the chip fixture opposite to the position-limiting fixing opening.

8. The on-board chip testing aid of claim 7, wherein said inner trace board is sandwiched between said chip fixture and said cover plate.

9. The auxiliary device for testing an on-board chip of claim 3, wherein a plurality of metal contacts are respectively arranged on the left side and the right side of the inner wiring board or are distributed in a square or rectangular shape along the periphery of the inner wiring board.