CN206863176U - A kind of electrical measurement fixture - Google Patents

Abstract

The utility model provides an electric measurement fixture, comprising: a base, on which a card slot for accommodating a circuit board to be detected and a signal conversion board for providing an electrical measurement signal are provided, and the card slot is provided with A connecting piece connected to the signal conversion board; and, a pressing piece, the middle part of the pressing piece is hinged on the base, and the two ends are the pressure head end and the pressure handle end respectively, and the pressure head end and the pressure head end are connected with each other. The positions of the slots correspond to each other; wherein, when the end of the pressing handle is pressed down, the end of the pressing head is lifted from the slot, so that the circuit board to be detected can be placed in the slot; The handle end and the indenter end are press-fitted on the slot of the base, so that the circuit board to be tested is contacted and connected with the connector. The electric measuring fixture provided by the utility model utilizes the principle of leverage and adopts a clip-type structure, which is more convenient to operate, and is convenient for personnel to directly observe whether the gold finger of the circuit board to be detected is placed correctly, avoiding misjudgment, and has a long service life. Short working hours.

Description

An electric measuring fixture

technical field

The utility model relates to the technical field of testing equipment, in particular to an electric measuring fixture.

Background technique

Currently, for products with a flexible printed circuit board (FPCA), such as a liquid crystal display panel, during the manufacturing process, it is necessary to conduct product electrical tests on the flexible printed circuit board. The electric measuring fixture of the "signal conversion board + piano cover plug-in" type is commonly used in the production lines of the existing industry. As shown in Figure 1, it is equipped with a flip-up piano cover on the signal conversion board. When testing, open the piano cover, plug the FPCA to the electric test fixture, and then buckle the piano cover for testing.

Due to the high requirements on the operator's working ability, the working time is long (about 10s), and the plugging is difficult. After the piano cover is closed, it is impossible to observe whether the FPCA is plugged in place. There is no foolproof measure. Poor connection leads to high misjudgment rate, high FPCA loss rate, and delays in production capacity; and because the piano cover is welded on the signal conversion board, the piano cover is used as a signal transmission window, and it is easily damaged or damaged due to improper buckle after many times of use , the components of the signal conversion board are exposed outside, and repeated contact by the operator will cause damage. The damage of the piano cover will directly cause the signal conversion board to be unusable. In total, about 100pcs of products will lose one signal conversion board, and frequent replacement will greatly delay production capacity. , increasing the cost of consumables for the product.

Utility model content

The purpose of the utility model is to provide an electric measuring fixture, which replaces the traditional piano cover structure, which is more convenient for personnel to work, has high stability, and is small in shape, novel in structure and durable.

The technical scheme provided by the utility model is as follows:

An electric measuring fixture, comprising:

A base, the base is provided with a card slot for accommodating the circuit board to be detected and a signal conversion board for providing electrical measurement signals, and the card slot is provided with a connector connected to the signal conversion board;

And, the pressing part, the middle part of the pressing part is hinged on the base, and the two ends are respectively the pressure head end and the pressure handle end, and the pressure head end corresponds to the position of the card slot; wherein, pressing down The pressure handle end and the pressure head end are lifted from the slot, so that the circuit board to be tested can be placed in the slot; the pressure handle end is lifted, and the pressure head end is pressed into the on the card slot of the base, so that the circuit board to be detected is contacted and connected with the connecting piece.

Further, the connector includes a plurality of probes, and a plurality of probe accommodating holes are arranged on the card slot, and the probes are accommodated in the probe accommodating holes.

Further, the card slot is detachably arranged on the base.

Further, the probe is retractably arranged in the probe accommodating hole of the card slot.

Further, the probe includes a base part connected to the signal conversion board and a thimble part for connecting with the circuit board to be tested, and a spring is arranged between the base part and the thimble part.

Further, the base includes a first surface and a second surface opposite to each other, the press fitting and the card slot are both arranged on the first surface of the base, and the signal conversion board is arranged on the base One side of the second surface, and the second surface of the base has an accommodating cavity, and a probe installer facing the slot is arranged in the accommodating cavity, and the probe installer A plurality of probes are installed on the probe mounter, and the plurality of probes on the probe installer pass through the base and extend into the probe accommodating holes of the card slot.

Further, the pressing head end of the pressing part has a protruding pressing block that matches the structure of the slot and is used to press the circuit board to be tested on the connecting part, and the protruding pressing block The position corresponds to the position of the card slot.

Further, the electric measuring fixture also includes a reset member for resetting the pressing handle end of the pressing part from the pressed state to the lifted state, and the reset part is arranged between the pressing part and the pressing part. between the bases.

Further, the middle part of the pressing part is hinged to the base through a rotating shaft, and the reset member includes a set of torsion springs arranged on the rotating shaft.

Further, the electrical testing fixture further includes an electrical signal socket provided on the signal conversion board for receiving electrical testing signals from external electrical testing equipment.

The beneficial effects of the utility model are as follows:

The electric measuring fixture provided by the utility model utilizes the principle of leverage and adopts a clip-type structure, which is more convenient to operate, and is convenient for personnel to directly observe whether the golden finger of the circuit board to be detected is placed correctly, avoiding misjudgment, and has a long service life. Short working hours.

Description of drawings

Fig. 1 shows the schematic diagram of the three-dimensional structure of the electric measuring fixture provided in the embodiment of the present invention in the pressing state;

Fig. 2 shows the front view of the electric measuring jig provided in the embodiment of the present invention in the pressing state;

Fig. 3 represents the right view of Fig. 2;

Fig. 4 shows the schematic diagram of the three-dimensional structure of the electric measuring fixture provided in the embodiment of the present invention when it is in the open state;

Fig. 5 shows the front view of the electric measuring fixture provided in the embodiment of the present invention when it is in an open state;

Fig. 6 represents the right side view of Fig. 5;

Fig. 7 shows an exploded view of the electric measuring fixture provided in the embodiment of the present invention.

detailed description

In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the utility model. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

In view of the existing technology, the electric measuring fixture adopts a piano cover structure, which requires high operating ability of the operator, long working time, and difficult insertion. After the piano cover is closed, it is impossible to observe whether the circuit board to be tested is plugged in place. There are no fool-proof measures, poor plugging leads to high misjudgment rate, high loss rate of circuit boards, and delays in production capacity. The utility model provides an electric measuring fixture with a simple structure, which replaces the traditional piano cover type electric measuring fixture The structure is more convenient for personnel to work and has high stability.

As shown in Figures 1 to 7, the electric measuring fixture provided in the embodiment of the utility model includes:

Base 100, the base 100 is provided with a card slot 110 for accommodating the circuit board to be detected and a signal conversion board 120 for providing electrical measurement signals, the card slot 110 is provided with a Connector;

And, the pressing part 200, the middle part of the pressing part 200 is hinged on the base 100, the two ends are respectively the pressure head end 220 and the pressure handle end 210, and the pressure head end 220 is connected to the card slot 110 location correspondence;

Wherein, the pressure handle end 210 is pressed down, and the pressure head end 220 is lifted from the slot 110, so that the circuit board to be tested can be placed in the slot 110;

The pressing handle end 210 is lifted, and the pressing head end 220 is press-fitted on the slot 110 of the base 100 , so that the circuit board to be tested is contacted and connected with the connector.

The electrical measurement fixture provided by the utility model is designed as a clip-type structure, wherein the signal conversion board 120 is designed on the base 100, that is, the signal conversion board 120 of the product is made into the base 100, pressed The indenter end 220 and the middle part of the indenter end 210 of the assembly 200 are hinged on the base 100 to form a clip structure, which utilizes the principle of leverage and replaces the traditional piano cover flipping method by pressing. When testing, press down the pressure handle end 210 so that the pressure head end 220 is lifted. At this time, the clip of the electric measuring fixture is in an open state (as shown in FIG. 4 ), and the circuit board to be tested is place the golden finger of the indenter in the card slot 110 below the indenter, and then lift the indenter 210, the indenter 220 presses the gold finger of the circuit board to be tested onto the card of the base 100. On the groove 110 (as shown in Figure 1), so that the circuit board to be detected is in contact with the connector, and then the circuit board to be detected can receive the signal of the signal conversion board 120 during testing to test the circuit board to be detected. electrical properties.

It can be seen that the electric measuring fixture provided by the utility model has the following advantages compared with the traditional piano cover flip-fit structure by adopting the clip-fit structure:

1) The traditional electronic measuring fixture has a flip-over structure of the piano cover, which needs to insert the golden finger of the circuit board to be tested under the piano cover. There is no fool-proof measure, and the operation is difficult, which may easily cause misjudgment by personnel and delay production capacity; and With the electric measuring fixture of the utility model, the operator can directly observe whether the golden finger is placed correctly, which has the function of foolproofing and avoids misjudgment;

2) The piano cover flip-up structure of the traditional electric measuring fixture, after many times of use, the piano cover is easy to be damaged or the buckle is not tight enough to cause damage, and the connecting parts of the signal transfer board are exposed outside, and repeated contact during operation is also difficult. It will cause damage, and about 100pcs of products will lose one signal conversion board 120, which is costly; and the electric measuring fixture of the present utility model uses the principle of leverage, adopts a pressing method, and has an ingenious structure. The signal conversion board is directly placed on the base 100 Inside, its service life can be improved (the service life can be guaranteed by simple maintenance such as replacing the connecting parts).

3) The piano cover of the traditional electric measuring fixture has a flip-over structure, and the single-piece plugging operation time is about 7s, which is long; while the electric measuring fixture of the utility model adopts a pressing method, and the working time is about 4s, effectively reducing Tack time (beat time).

The preferred embodiments of the electric measuring fixture provided by the present invention are described below.

In a preferred embodiment provided by the present utility model, the card slot 110 is detachably arranged on the base 100 .

With the above solution, the card slot 110 is detachably arranged on the base 100, and the card slot 110 can be designed according to the shape of the golden finger of the circuit board to be tested, and the corresponding card slot can be replaced for different products 110, the universality of the electric measuring fixture is improved, and it has the effect of foolproofing.

In a preferred embodiment provided by the present utility model, the connector includes a plurality of probes, and a plurality of probe accommodation holes are arranged on the card slot 110, and a plurality of probe accommodation holes are accommodated in the probe accommodation holes. the probe.

Using the above scheme, the connector uses probes to realize the electrical connection between the circuit board to be tested and the signal conversion board 120. This method has a simple structure and can avoid direct exposure of the connecting devices of the signal conversion board 120. When the probes are damaged Finally, the probe can be replaced directly without replacing the signal conversion board 120, which improves productivity, reduces loss, and reduces costs.

Of course, it can be understood that, in practical applications, the connecting member may also be implemented in other ways, which is not limited thereto.

In addition, in a preferred embodiment of the present invention, the probe is retractably arranged in the probe accommodating hole of the card slot 110 .

With the above scheme, the probes are retractably arranged in the probe accommodation holes of the card slot 110, and when the circuit board to be tested is pressed together, the probes can be stretched in the to-be-tested circuit board. The test circuit board retracts under pressure to avoid hard scratches on the circuit board to be tested.

Preferably, the probe includes a base part connected to the signal conversion board 120 and a thimble part for connecting with the circuit board to be tested, and a spring is arranged between the base part and the thimble part.

By adopting the above solution, the elastic expansion and contraction of the probe can be realized by setting the spring, so as to avoid scratching the circuit board to be tested and ensure good contact between the probe and the circuit board to be tested. It should be understood that, in practical applications, the scalable arrangement of the probes is not limited to this, and there may be various implementations.

In addition, in the preferred embodiment provided by the present utility model, as shown in FIG. 1 to FIG. 7 , the base 100 includes a first surface and a second surface opposite to each other, and the pressing member 200 and the slot 110 are arranged on the first surface of the base 100, the signal conversion board 120 is arranged on the side of the second surface of the base 100, and the second surface of the base 100 has an accommodating cavity. The accommodating cavity is provided with a probe installer 400 facing the card slot 110, a plurality of probes are installed on the probe installer 400, and the probe installer 400 A plurality of probes extend through the base 100 into the probe accommodating holes of the slot 110 .

The above solution is a preferred implementation of the electric measuring fixture of the present invention, the signal conversion board 120 can be protected by the base 100 , and the probe can be installed and fixed by the probe installer 400 . Of course, it can be understood that the specific installation manner of the signal conversion board 120 and the probes is not limited.

In addition, in the embodiment provided by the present utility model, as shown in FIGS. The circuit board to be tested is pressed against the protruding pressing block 230 on the connector, and the position of the protruding pressing block 230 corresponds to the position of the card slot 110 .

Using the above scheme, the protruding pressing block 230 is provided on the pressure head end 220 of the press fitting 200 to cooperate with the structure of the card slot 110, so as to press the golden finger of the circuit board to be tested on the Inside the card slot 110 .

In addition, in the preferred embodiment provided by the present utility model, the electric measuring fixture further includes a reset member for resetting the pressing handle end 210 of the press fitting 200 from the pressed state to the lifted state, The reset member is disposed between the pressing member 200 and the base 100 .

Preferably, the middle part of the pressing part 200 is hinged to the base 100 through a rotating shaft, and the restoring part includes a set of torsion springs arranged on the rotating shaft.

By adopting the above solution, by setting the reset member, the pressing handle end 210 of the pressing member 200 of the clip structure can be automatically reset. It should be understood that the specific structure of the reset member is not limited.

In addition, in the preferred embodiment provided by the present utility model, as shown in FIG. 7 , the electric test fixture also includes an electric test signal set on the signal conversion board 120 for accessing external electric test equipment. The electric signal plug interface 300.

Using the above solution, the electrical signal plug interface 300 provided on the electrical test fixture can be a USB interface for connecting with an external electrical testing device (such as a computer) to apply a test signal to the circuit board to be tested.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and replacements can also be made. And replacement should also be regarded as the protection scope of the present utility model.

Claims (10)

1. An electric measuring fixture, characterized in that, comprising: A base, the base is provided with a card slot for accommodating the circuit board to be detected and a signal conversion board for providing electrical measurement signals, and the card slot is provided with a connector connected to the signal conversion board; And, the pressing part, the middle part of the pressing part is hinged on the base, and the two ends are respectively the pressure head end and the pressure handle end, and the pressure head end corresponds to the position of the card slot; wherein, pressing down The pressure handle end and the pressure head end are lifted from the slot, so that the circuit board to be tested can be placed in the slot; the pressure handle end is lifted, and the pressure head end is pressed into the on the card slot of the base, so that the circuit board to be detected is contacted and connected with the connecting piece. 2. The electric measuring fixture according to claim 1, characterized in that, The connector includes a plurality of probes, and a plurality of probe accommodating holes are arranged on the card slot, and the probes are accommodated in the probe accommodating holes. 3. The electric measuring fixture according to claim 2, characterized in that, The card slot is detachably arranged on the base. 4. The electric measuring fixture according to claim 3, characterized in that, The probe is retractably arranged in the probe accommodating hole of the slot. 5. The electric measuring fixture according to claim 4, characterized in that, The probe includes a base part connected with the signal conversion board and a thimble part for connecting with the circuit board to be tested, and a spring is arranged between the base part and the thimble part. 6. The electric measuring fixture according to claim 2, characterized in that, The base includes a first surface and a second surface opposite to each other, the press fitting and the card slot are both arranged on the first surface of the base, and the signal conversion board is arranged on the second surface of the base One side, and the second surface of the base has an accommodating cavity, a probe installer facing the slot is arranged in the accommodating cavity, and a probe installer is installed on the accommodating cavity There are a plurality of probes, and the plurality of probes on the probe installer pass through the base and extend into the probe accommodating holes of the card slot. 7. The electric measuring fixture according to claim 1, characterized in that, The pressure head end of the press fitting has a protruding pressure block that matches the structure of the slot and is used to press the circuit board to be tested on the connector. The position of the protruding pressure block is in line with the Corresponds to the position of the above card slot. 8. The electric measuring fixture according to claim 1, characterized in that, The electric measuring fixture also includes a reset member for resetting the pressing handle end of the pressing part from the pressed state to the lifted state, and the reset part is arranged between the pressing part and the base between. 9. The electric measuring fixture according to claim 8, characterized in that, The middle part of the pressing part is hinged to the base through a rotating shaft, and the restoring part includes a set of torsion springs arranged on the rotating shaft. 10. The electric measuring fixture according to claim 1, characterized in that, The electrical measuring fixture also includes an electrical signal socket provided on the signal conversion board for receiving electrical testing signals from external electrical testing equipment.