CN218412806U

CN218412806U - Flexible auxiliary device for QFP (quad Flat Package) online signal acquisition

Info

Publication number: CN218412806U
Application number: CN202222334096.8U
Authority: CN
Inventors: 李晓晓
Original assignee: State Run Wuhu Machinery Factory
Current assignee: State Run Wuhu Machinery Factory
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2023-01-31
Anticipated expiration: 2032-09-02

Abstract

The utility model relates to a signal acquisition appurtenance technical field specifically is a flexible auxiliary device for online signal acquisition of QFP, include the body as support component, still arrange the design according to the pin of waiting to gather the QFP device all around at the body including setting up and have the flexible probe that the distance equals, the flexible probe one-to-one that test terminal on the PCB board and rule distribute, test terminal and flexible probe between be connected through the wire, the utility model discloses to QFP signal acquisition's problem, be fixed in the flexible auxiliary device of QFP body through adsorbable, the device can stretch and contract with the stitch that the QFP pin links to each other, can effectively protect the device pin not by stress damage, become the big interval of arbitrary self-designed through the conversion with the pin interval, can prevent the short circuit when signal online acquisition, realize the collection to a plurality of pin signals simultaneously.

Description

Flexible auxiliary device for QFP (quad Flat Package) online signal acquisition

Technical Field

The utility model relates to a signal acquisition appurtenance technical field specifically is a flexible auxiliary device that is used for QFP on-line signal to gather.

Background

QFP is a quad flat package, one of surface mount packages, with gull wing L-shaped leads led out from four sides. The large-scale or super-large-scale integrated circuit adopts the packaging form, the pin number is generally over 100, and the pin center distance has various specifications such as 1mm, 0.8mm, 0.65mm, 0.5mm, 0.4mm, 0.3mm and the like. In the process of circuit board repair, chip pin signals are often required to be acquired in an actual test environment, sometimes a plurality of pin signals of the same QFP package chip are required to be acquired simultaneously for waveform analysis, a conventional acquisition method is to directly use an oscilloscope to gauge a pen point on a tested pin, or use a plurality of probe hooks to respectively hook the tested pin, but due to the characteristics of small size and dense pins of the QFP package, the probe hooks cannot hook the tested pin at all, and a straight connection point of the oscilloscope is easy to be short-circuited with a pin beside the tested pin, so that an effective auxiliary device can be used for solving the problem in the current market.

Disclosure of Invention

In order to solve the problem, the utility model provides a flexible auxiliary device for QFP on-line signal acquisition.

The utility model provides a flexible auxiliary device for online signal acquisition of QFP, includes the body as the support component, still including setting up around the body and arranging the design according to the pin of waiting to gather the QFP device and have the flexible probe needle that the distance equals, the flexible probe needle one-to-one that test terminal and rule on the PCB board distributed, test terminal and flexible probe needle between be connected through the wire.

As a further improvement of the utility model, the body and the PCB board between be provided with in order to prevent that the wire from dragging and accumulational fixed column.

As a further improvement of the utility model, the fixing columns are arranged at four right-angle sides of the body.

As a further improvement of the utility model, a handle which is convenient for connecting the PCB board and the flexible probe pin is arranged on the PCB board.

As a further improvement of the utility model, the bottom of the body is provided with four fixed suckers.

As a further improvement of the utility model, the flexible probe pin comprises an outer frame, an inner pin elastically matched with the outer frame, and a spring arranged between the outer frame and the inner pin.

The utility model has the advantages that: the utility model discloses to QFP signal acquisition's problem, the flexible auxiliary device who is fixed in the QFP body through adsorbability, the device can stretch and contract with the stitch that the QFP pin links to each other, can effectively protect the device pin not by stress damage, becomes the pin interval through the conversion arbitrary big interval of designing by oneself, can prevent the short circuit when signal on-line collection, realizes the collection to a plurality of pin signals simultaneously.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of the three-dimensional structure of the flexible probe of the present invention;

reference numerals: 1. a body; 2. a PCB board; 3. fixing a column; 4. fixing the sucker; 5. a wire; 6. a flexible probe pin; 7. a test terminal; 8. a handle; 9. an inner needle; 10. an outer frame; 11. a spring.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, and the utility model is further explained below.

As shown in fig. 1 and 2, a flexible auxiliary device for QFP online signal acquisition comprises a body 1 serving as a supporting component, and further comprises flexible probe pins 6 arranged around the body 1 and arranged according to the pins of QFP devices to be acquired, wherein the flexible probe pins 6 are arranged at equal distances, test terminals 7 on a pcb 2 correspond to the flexible probe pins 6 distributed regularly one by one, and the test terminals 7 are connected with the flexible probe pins 6 through leads 5.

FIG. 1 is a 16-pin QFP, and other numbers of pins are similar to those in FIG. 1.

The utility model discloses it is close to QFP type device pin on the product, can't carry out the problem of simultaneous acquisition and an auxiliary device of design to a plurality of pin signals on the line, utilize wire 5 to convert QFP device pin to PCB board 2 on, and with 7 one-to-ones of test terminal on the PCB board 2, thus, as long as gather the signal on the test terminal 7 that corresponds, just can obtain the pin signal of the QFP device of needs, be used for the collection and the analysis of on-line signal, solve the problem of QFP signal effective collection under actual operational environment, effectively avoid the short circuit that the oscilloscope pen arouses in the acquisition process, realize the actual demand of gathering a plurality of signals simultaneously.

The utility model discloses a PCB structure, including body 1 and PCB board 2, be provided with between body 1 and the PCB board 2 in order to prevent that wire 5 from dragging and accumulational fixed column 3, further, fixed column 3 when the in-service use, can be cylindrical, square column shape, do not influence the shape of operation use all can.

As shown in fig. 1, the fixing posts 3 are arranged at four right-angle sides of the body 1, and further, the connection between the test terminal 7 and the regularly distributed flexible probe pins 6 is not affected, and the position is not specifically limited.

Be provided with the handle 8 that is convenient for couple together PCB board 2 and flexible probe pin 6 on the PCB board 2, when using, need artifical handheld handle 8, aim at and treat the collection device, press downwards gently.

Compared with the prior method for directly acquiring signals by using the oscilloscope stylus, the utility model can avoid the short circuit caused by the oscilloscope stylus in the acquisition process; the signal acquisition can be effectively realized for a plurality of pins simultaneously, and the device is safe, reliable and convenient to operate.

The bottom of the body 1 is provided with four fixed suckers 4, and further, after the four fixed suckers 4 are pressed, the suckers 4 are adsorbed on the body of a device to be collected.

The flexible probe pin 6 comprises an outer frame 10, an inner pin 9 elastically matched with the outer frame 10, and a spring 11 arranged between the outer frame 10 and the inner pin 9, and further, the flexibility of the spring 11 is utilized, so that the flexible probe pin 6 can flexibly stretch when a clamp is pressed, the stress is reduced, and pins are protected.

The utility model discloses to QFP signal acquisition's problem, the flexible auxiliary device who is fixed in the QFP body through adsorbability, the device can stretch and contract with the stitch that the QFP pin links to each other, can effectively protect the device pin not by stress damage, becomes the pin interval through the conversion arbitrary big interval of designing by oneself, can prevent the short circuit when signal on-line collection, realizes the collection to a plurality of pin signals simultaneously.

Handheld handle 8, aim at and treat the collection device, press downwards gently, make sucking disc 4 adsorb on treating the collection device body, make the pin of flexible probe 6 and device fully contact one by one simultaneously, through the signal acquisition to test terminal 7, just can obtain the signal of treating gathering QFP device target pin, want to gather a plurality of pin signals simultaneously, as long as gather simultaneously corresponding test terminal 7 signal can, neither easy short circuit, can realize the effective collection of a plurality of signals simultaneously again.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and what is described in the specification are the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are intended to fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A flexible auxiliary device for QFP online signal acquisition comprises a body (1) as a supporting component, and is characterized in that: the QFP device testing device is characterized by further comprising flexible probe needles (6) which are arranged around the body (1) and are arranged according to pins of QFP devices to be collected, wherein the distances between the flexible probe needles (6) are equal, testing terminals (7) on the PCB (2) correspond to the flexible probe needles (6) distributed regularly one by one, and the testing terminals (7) are connected with the flexible probe needles (6) through leads (5).

2. The flexible auxiliary device for QFP online signal acquisition as claimed in claim 1, wherein: a fixing column (3) for preventing the wires (5) from being pulled and stacked is arranged between the body (1) and the PCB (2).

3. The flexible auxiliary device for QFP online signal acquisition as claimed in claim 2, wherein: the fixing columns (3) are arranged at four right-angle sides of the body (1).

4. The flexible auxiliary device for QFP online signal acquisition as claimed in claim 1, wherein: a handle (8) is arranged on the PCB (2).

5. The flexible auxiliary device for QFP online signal acquisition as claimed in claim 1, wherein: the bottom of the body (1) is provided with four fixed suckers (4).

6. The flexible auxiliary device for QFP online signal acquisition as claimed in claim 1, wherein: the flexible probe needle (6) comprises an outer frame (10) and an inner needle (9) which is elastically matched with the outer frame (10).

7. The flexible auxiliary device for QFP online signal acquisition as claimed in claim 6, wherein: a spring (11) is designed between the outer frame (10) and the inner needle (9).