CN215911628U

CN215911628U - Integrated onboard chip test auxiliary device

Info

Publication number: CN215911628U
Application number: CN202121710837.7U
Authority: CN
Inventors: 苏永东
Original assignee: Xinjia Digital Electronics Shenzhen Co ltd
Current assignee: Xinjia Digital Electronics Shenzhen Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-02-25
Anticipated expiration: 2031-07-26

Abstract

The utility model relates to an integrated onboard chip test auxiliary device. The device comprises a top cover and a flexible circuit board, wherein metal terminals corresponding to pins of an on-board chip are embedded in the top cover, the top cover is buckled on the on-board chip, and the metal terminals are in contact with the pins of the on-board chip to form electric connection; the inner end of the flexible circuit board is connected with the top cover, and the other end of the flexible circuit board is an external connector; the inner end of the flexible circuit board is provided with a through hole, and the metal terminal is correspondingly inserted into the through hole and is electrically connected with the external connector through the flexible circuit board. According to the utility model, the metal terminal of the top cover is directly connected through the flexible circuit board, and the metal terminal is correspondingly inserted into the through hole to form electrical connection, so that the assembly difficulty is reduced after no welding spot exists, the integrity of the device is improved, the assembly production efficiency is improved, the split parts are reduced, the contact resistance is reduced, the integral on-resistance is reduced, and the electrical performance of the product is greatly improved.

Description

Integrated onboard chip test auxiliary device

Technical Field

The utility model relates to chip testing equipment, in particular to an integrated on-board chip testing auxiliary device.

Background

Modern electronic devices, such as computers, cell phones, game consoles, etc., do not depart from electronic components such as circuit boards and chips. When problems occur in these electronic devices and maintenance is required, the circuit boards and chips often need to be inspected to find out the problems. When testing on-board chips, the most common practice is to remove the chip directly from the circuit board for testing. The method is easy to damage the chip, and the chip or the circuit board is scrapped because the chip is difficult to be re-positioned on the board, so that the safety and reliability are poor. Chinese patent CN211426701U discloses a board-mounted chip test auxiliary device, which covers on the chip through a jig, the metal contacts of the jig form contacts at the chip pins respectively, the metal contacts are also electrically connected to the external wiring board, the external wiring board is provided with a multi-pin connector, and the multi-pin connector can be inserted with a wiring harness to be connected to an external test device. When the structure is used for testing the on-board chip, the chip does not need to be disassembled, so that the chip is well protected. But this kind of structure is higher to solder joint precision requirement when the assembly, and the assembly degree of difficulty is high, leads to the yields to be difficult to promote. And because this kind of structure is split type structure and there are many contact resistances, lead to the resistance higher. The above problems of such a structure are all to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides an integrated on-board chip test auxiliary device to reduce the assembly difficulty and reduce the resistance.

In order to achieve the purpose, the utility model adopts the following technical scheme: the integrated on-board chip testing auxiliary device comprises a top cover and a flexible circuit board, wherein metal terminals corresponding to pins of an on-board chip are embedded in the top cover, the top cover is used for being buckled on the on-board chip, and the metal terminals are used for being in contact with the pins of the on-board chip to form electric connection; the inner end of the flexible circuit board is connected with the top cover, and the other end of the flexible circuit board is an external connector; the inner end of the flexible circuit board is provided with a through hole, and the pin of the metal terminal is correspondingly inserted into the through hole and is electrically connected with the external connector through the flexible circuit board.

The top cover is provided with a containing groove, the containing groove is used for containing an onboard chip, a groove is formed in at least one side wall of the containing groove, the clamping arms of the metal terminals penetrate out of the groove, and the groove corresponds to the metal terminals one to one.

The perforated side wall of the flexible circuit board is plated with metal, and the perforated side wall is electrically connected with an external connector of the flexible circuit board through internal wiring of the flexible circuit board.

The top cover is provided with a cover plate, and the inner end of the flexible circuit board is clamped by the top cover and the cover plate.

The cover plate is provided with at least one positioning column, a corresponding first positioning hole is formed in the flexible circuit board, a corresponding second positioning hole is formed in the top cover, the positioning column penetrates through the first positioning hole of the flexible circuit board and penetrates into the second positioning hole, the positioning column and the second positioning hole form tight fit, and the inner diameter of the first positioning hole is consistent with the outer diameter of the positioning column.

The cover plate is provided with at least one connecting column, the top cover is provided with a corresponding connecting hole, and the connecting column penetrates into the connecting hole and forms tight fit.

The cover plate is provided with a yielding groove towards one surface of the inner end of the flexible circuit board, the pin of the metal terminal penetrates through the through hole of the flexible circuit board, and the yielding groove is used for accommodating the exposed part of the pin of the metal terminal penetrating through the through hole.

In the same row of metal terminals, pins of adjacent metal terminals are arranged in a staggered manner; the through holes of the flexible circuit board correspond to the pins of the metal terminals one by one.

The auxiliary device for testing the onboard chip further comprises an external circuit board, wherein the external circuit board is provided with a plug socket and a pin hole, an external connector of the flexible circuit board is inserted into the plug socket, and the external connector is electrically connected with the pin hole through the plug socket.

Compared with the prior art, the utility model has the beneficial effects that: through the metal terminal of flexible circuit board lug connection overhead guard, the metal terminal corresponds and forms electric connection in inserting the perforation, has not had the assembly degree of difficulty to obtain reducing after the solder joint, and the device wholeness obtains improving moreover, and assembly production efficiency obtains improving, and has reduced the components of a whole that can function independently and can make contact resistance obtain reducing, and whole on-resistance obtains reducing, and the electrical property of product has obtained very big promotion.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more apparent, the following detailed description will be given of preferred embodiments.

Drawings

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

FIG. 2 is an exploded view of the chip-on-board test aid of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

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.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by one skilled in the art.

The present embodiment is an auxiliary device for testing a chip on a board, and is specifically shown in fig. 1 and 2.

As shown in fig. 1, the device includes a top case 10, a flexible circuit board 20, and an external circuit board 30. The top cover 10 is intended to be snapped over a chip on board. The inner end 21 of the flexible circuit board 20 is connected with the top cover 10, and the other end is provided with an external connector 22 for connecting with an external circuit board 30. The external circuit board 30 is used for connecting with external test equipment. In other embodiments, the external connector at the other end of the flexible circuit board may also be directly connected to the external test equipment, i.e. not via the external circuit board.

A metal terminal 40 is embedded in the top case 10. As shown in fig. 2, the metal terminals 40 have two rows parallel to each other. The metal terminal 40 has an upper portion forming a clip arm 41 and a lower portion forming a pin 42. In practice, corresponding to a certain type of on-board chip, metal terminals 40 corresponding to the positions of the metal pins of the on-board chip are arranged in the top cover 10. In other embodiments, if there are pins all around the chip on board, then there are four rows of metal terminals.

Each metal terminal 40 is embedded in the top case 10. As shown in fig. 2, the top cover 10 is provided with a receiving groove 11, and the receiving groove 11 is used for receiving the chip on board. The shape of the receiving groove 11 should match the chip on board. The two side walls of the accommodating groove 11 are respectively provided with a groove 13, and the groove 13 corresponds to the metal terminal 40 one by one. The clip arms 41 of the metal terminal 40 protrude from the slot 13. When the top cover 10 is buckled on the chip on board, the chip on board is placed in the receiving slot 11, and the clip arms 41 of the metal terminals 40 clip the pins of the chip on board to make electrical connection with the pins of the chip on board.

As shown in fig. 2, the inner end 21 of the flexible circuit board 20 is provided with a through hole 211 corresponding to the metal terminal 40. The side wall of the through hole 211 of the flexible circuit board 20 is plated with metal (preferably gold plating), and the side wall of the through hole 211 is electrically connected with the external connector 22 of the flexible circuit board 20 through the internal wiring of the flexible circuit board 20. The pins 42 of the metal terminals 40 are correspondingly inserted into the through holes 211 and electrically connected with the external connectors 22 through the flexible circuit board 20. In the same row of the metal terminals 40, the pins 42 of the adjacent metal terminals 40 are arranged to be staggered with each other, and the through holes 211 of the flexible circuit board 20 correspond to the pins 42 of the metal terminals 40 one to one. The adjacent pins 42 are arranged in a staggered manner, that is, the through holes 211 can be arranged in a staggered manner, so that the metal terminals 40 can be arranged more closely, the mutual welding points can be better ensured not to be contacted, and the connection problem caused by too small interval between the adjacent through holes 211 can be avoided.

Further, as shown in fig. 2, the top cover 10 is provided with a cover plate 50. The inner end 21 of the flexible circuit board 20 is clamped up and down by the top cover 10 and the cover plate 50. The cover plate 50 has 4 positioning posts 51, the flexible circuit board 20 has corresponding first positioning holes 212, and the top cover 10 has corresponding second positioning holes 12. The positioning post 51 penetrates through the first positioning hole 212 of the flexible circuit board 20 and penetrates into the second positioning hole 12 of the top cover 10. The positioning post 51 is tightly fitted with the second positioning hole 12. The inner diameter of the first positioning hole 212 is the same as the outer diameter of the positioning column 51. The positioning column 51 plays a role in fixing the inner end 21 of the flexible circuit board 20, so that the flexible circuit board 20 cannot easily displace from the top cover 10, and the connection reliability and stability are ensured. In other embodiments, the number of the positioning columns is at least one.

In addition, as shown in FIG. 2, the cover plate 50 is provided with two rows of 6 connecting posts 52. The top cover 10 is provided with corresponding attachment holes 14. The connecting post 52 penetrates into the connecting hole 14 and forms a tight fit. In addition, two relief grooves 53 are formed in a surface of the cover plate 50 facing the inner end 21 of the flexible circuit board 20. The relief grooves 53 are used for accommodating the exposed portions of the pins 42 of the metal terminals 40 penetrating through the through holes 211, so that the exposed portions of the pins 42 of the metal terminals 40 penetrating through the through holes 211 of the flexible circuit board 20 and the cover plate 50 can be prevented from interfering with each other. In other embodiments, the number of the connecting columns of the cover plate is at least one.

In addition, as shown in fig. 2, the external circuit board 30 is provided with a socket 31 and two rows of pin holes 32. The ports of the socket 31 and the two rows of pin holes 32 are electrically connected through copper traces on the external circuit board 30. The pin holes 32 correspond one-to-one to the metal terminals 40 in the top cover 10. The external connector 22 of the flexible circuit board 20 is inserted into the socket 31 and the external connector 22 is electrically connected to the pin hole 32 through the socket 31. The PIN holes 32 of the external circuit board 30 can be inserted with PIN PINs of external test equipment to form connection between the on-board chip and the test equipment.

According to the utility model, the flexible circuit board 20 is directly connected with the metal terminal 40 of the top cover 10, the metal terminal 40 is correspondingly inserted into the through hole 211 to form electrical connection, the assembly difficulty is reduced after no welding spot exists, the integrity of the device is improved, the assembly production efficiency is improved, the number of split parts is reduced, the contact resistance is reduced, the integral on-resistance is reduced, and the electrical performance of the product is greatly improved.

The technical contents of the present invention are further illustrated by the examples only for the convenience of the reader, but the embodiments of the present invention are not limited thereto, and any technical extension or re-creation based on the present invention is protected by the present invention. The protection scope of the utility model is subject to the claims.

Claims

1. The integrated on-board chip testing auxiliary device is characterized by comprising a top cover and a flexible circuit board, wherein metal terminals corresponding to pins of an on-board chip are embedded in the top cover, the top cover is used for being buckled on the on-board chip, and the metal terminals are used for being in contact with the pins of the on-board chip to form electric connection; the inner end of the flexible circuit board is connected with the top cover, and the other end of the flexible circuit board is an external connector; the inner end of the flexible circuit board is provided with a through hole, and the pin of the metal terminal is correspondingly inserted into the through hole and is electrically connected with the external connector through the flexible circuit board.

2. The integrated on-board chip testing auxiliary device as claimed in claim 1, wherein the top cover is provided with a receiving groove for receiving the on-board chip, at least one side wall of the receiving groove is provided with a slot, the clamping arms of the metal terminals penetrate out of the slot, and the slot corresponds to the metal terminals one to one.

3. The integrated on-board chip testing aid of claim 1, wherein the perforated side wall of the flexible circuit board is plated with metal, the perforated side wall being electrically connected to the external connectors of the flexible circuit board via internal traces of the flexible circuit board.

4. The integrated chip-on-board test aid of claim 1, wherein said top cover has a cover plate, and said inner end of said flexible circuit board is clamped by said top cover and said cover plate.

5. The integrated on-board chip testing auxiliary device of claim 4, wherein the cover plate has at least one positioning post, the flexible circuit board is provided with a corresponding first positioning hole, the top cover is provided with a corresponding second positioning hole, the positioning post penetrates through the first positioning hole of the flexible circuit board and penetrates into the second positioning hole, the positioning post and the second positioning hole form a tight fit, and the inner diameter of the first positioning hole is consistent with the outer diameter of the positioning post.

6. The integrated on-board chip testing aid of claim 4, wherein the cover plate has at least one attachment post, the top cap has a corresponding attachment hole, and the attachment post penetrates into the attachment hole and forms a tight fit.

7. The integrated on-board chip testing aid of claim 4, wherein the cover plate is provided with a relief groove on a surface thereof facing the inner end of the flexible circuit board, the pin of the metal terminal penetrates through the through hole of the flexible circuit board, and the relief groove is used for accommodating an exposed portion of the pin of the metal terminal penetrating through the through hole.

8. The integrated on-board chip testing aid of claim 1, wherein in the same row of metal terminals, the pins of adjacent metal terminals are staggered with respect to each other; the through holes of the flexible circuit board correspond to the pins of the metal terminals one to one.

9. The integrated on-board chip testing auxiliary device of any one of claims 1-8, further comprising an external circuit board, wherein the external circuit board is provided with a socket and a pin hole, the external connector of the flexible circuit board is inserted into the socket and is electrically connected with the pin hole through the socket.