CN212060536U - Electrical performance test tool - Google Patents
Electrical performance test tool Download PDFInfo
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- CN212060536U CN212060536U CN202020448745.5U CN202020448745U CN212060536U CN 212060536 U CN212060536 U CN 212060536U CN 202020448745 U CN202020448745 U CN 202020448745U CN 212060536 U CN212060536 U CN 212060536U
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Abstract
The utility model relates to an electrical performance test frock is surveyed the main part and is the three-rail magnetic head including three-rail magnetic head body and flexible circuit board, including test box and test mainboard, set up the printed circuit board that the installation etching is good on the panel of test mainboard, last connector and the butt joint of flexible circuit board of passing through of printed circuit board, the pin of first orbit, second orbit and the third orbit on the connector with flexible circuit board is drawn forth to printed circuit board on, printed circuit board passes through the copper line with first orbit, second orbit and third orbit series connection and draws forth two connecting terminal, two connecting terminal is connected to DC power supply after wire series connection emitting diode, switch. The utility model provides an electrical performance test frock tests three orbit series connection back, and work efficiency is high, and the test is accurate.
Description
Technical Field
The utility model relates to an electronic product measures technical field, especially relates to an electrical performance test frock.
Background
The magnetic head is a component for reading data on a magnetic medium by a magnetic principle, and comprises a soft magnetic core, a coil and a magnetic circuit gap. Before the magnetic head is used, the electrical performance of the magnetic head needs to be judged, so that inconvenience for subsequent work is avoided. At present, the electrical performance of the magnetic head is generally tested by an inductance meter or a multimeter, the performance of the magnetic head is tested by the change of the inductance value, but the short circuit of the magnetic head cannot be detected, so that the test result is influenced, and the method and the principle of the existing tester are complex and are not suitable for the electrical performance test of the magnetic head.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an electrical performance test frock tests after connecting three orbit series connection, and work efficiency is high, and the test is accurate.
The technical scheme adopted by the utility model is that: a tested main body is a three-rail magnetic head comprising a three-rail magnetic head body and a flexible circuit board, and the three-rail magnetic head comprises a test box and a test mainboard, wherein a printed circuit board which is etched is arranged on a panel of the test mainboard, the printed circuit board is butted with the flexible circuit board through a connector, pins of a first track, a second track and a third track on the flexible circuit board are led out to the printed circuit board through the connector, the printed circuit board connects the first track, the second track and the third track in series through a copper wire and leads out two connecting terminals, and the two connecting terminals are connected to a direct current power supply after being connected with a light emitting diode and a switch in series through a lead;
a ground resistance test terminal, an insulation resistance test terminal and an inductance test terminal are respectively led out from two ends of the connecting terminal through leads, the ground resistance test terminal is connected to a ground resistance tester through a connecting wire, and the ground resistance tester tests the ground resistance after the first track, the second track and the third track are connected in series; the insulation resistance test terminal is connected to an insulation resistance tester through a connecting wire, and the insulation resistance tester tests the insulation resistance after the first track, the second track and the third track are connected in series; the inductance test terminal is connected to an inductance tester through a connecting wire, and the inductance tester tests the voltage and the resistance value of the first track, the second track and the third track which are connected in series in the direct current loop.
As a further limitation to the above technical solution, the inner bottom surface of the test box is provided with four supporting legs with top surfaces provided with internal threads, and the test main board is fixed on the supporting legs through screws.
As a further limitation to the above technical solution, a panel of the test motherboard is provided with a connection hole, a wire passes through the connection hole to connect each test terminal on the back of the test motherboard, and handles are respectively arranged on two sides of the test motherboard.
As a further limitation to the above technical solution, the ground resistance test terminal, the insulation resistance test terminal, and the inductance test terminal are sequentially disposed on the upper portion of the panel of the test motherboard from left to right, and the test motherboard corresponding to the ground resistance test terminal, the insulation resistance test terminal, and the inductance test terminal is provided with a one-to-one corresponding tag.
As a further limitation to the above technical solution, a placing groove for placing the three-rail magnetic head is provided at the middle lower part of the panel of the test main board, and guide posts corresponding to the mounting holes on the three-rail magnetic head are respectively provided inside the placing groove.
As a further limitation to the above technical solution, the outer side of the connector is provided with parallel spacing limit plates for guiding and limiting the flexible circuit board.
The utility model relates to an electrical performance test tool, the three orbits of three-rail magnetic head are connected in series, the test to three orbits can be accomplished once only, need not to test each orbit separately, improve work efficiency; the inductance tester is used for measuring the voltage values and the resistance values of the three tracks after being connected in series, when the three tracks are short-circuited, the short-circuit phenomenon can be judged quickly and accurately through the change of the voltage values and the resistance values, and if the short-circuit phenomenon only passes through the change of the inductance values of the test tracks, the short-circuit phenomenon of the tracks cannot be detected due to the small change of the inductance values.
The utility model discloses a set up the support leg, support the test mainboard, conveniently test the use of mainboard.
The utility model discloses a set up the connecting hole, standardize the connection of wire, improve the clean and tidy degree of test mainboard to through setting up the handle, conveniently test the installation and the dismantlement of mainboard.
The utility model discloses a set up standing groove and guide post, the installation location of the three rail magnetic heads of being convenient for.
Drawings
Fig. 1 is a top view of the test motherboard of the present invention;
fig. 2 is the utility model discloses the side view of limiting plate.
In the figure: 1-testing a main board; 2-a three-rail head body; 3-a flexible circuit board; 4-mounting a plate; 5-a printed circuit board; 6-a connector; 7-a connection terminal; 8-a light emitting diode; 9-a switch; 10-ground resistance test terminal; 11-insulation resistance test terminal; 12-an inductance test terminal; 13-a handle; 14-placing the groove; 15-limiting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1-2, an electrical performance testing tool includes a testing box and a testing motherboard 1, and a tested body is a three-rail magnetic head. The three-rail magnetic head comprises a three-rail magnetic head body 2 and a flexible circuit board 3, wherein the three-rail magnetic head body 2 comprises three magnetic cores and three coils which are arranged side by side to form a first track, a second track and a third track. The three-rail magnetic head further comprises mounting plates 4 which are respectively arranged on the upper end face and the lower end face of the three-rail magnetic head body 2, the mounting plates 4 are convenient for mounting the three-rail magnetic head, and mounting holes are formed in the mounting plates 4. The flexible circuit board 3 comprises six pins which are respectively led out from two ends of the three coils, and forms a flexible flat cable. In order to detect whether a three-rail magnetic head product is qualified, whether three tracks of the three-rail magnetic head can be conducted or not, whether the three tracks are short-circuited or not and whether the grounding resistance and the insulation resistance of the three tracks are in a qualified numerical range or not need to be detected.
The inner bottom surface of the test box is provided with four supporting legs, the four supporting legs are arranged at four corners of the inner bottom surface respectively, internal threads are formed in the top surfaces of the four supporting legs, and the test main board is fixed on the supporting legs through screws.
Set up etched printed circuit board 5 on the panel of test mainboard, be provided with connector 6 on printed circuit board 5, FPC connector is chooseed for use to connector 6, connects printed circuit board 5 and flexible circuit board 3 in machinery and electricity through the FPC connector, and the one end and the printed circuit board 5 welding of FPC connector, the other end and the 3 butt joints of flexible circuit board of FPC connector. Draw forth to printed circuit board 5 through the pin of first orbit, second orbit and third orbit on the FPC connector 3 on, in printed circuit board 5 is last to be connected first orbit, second orbit and third orbit series connection and draw forth two connecting terminal 7 through the copper line, connecting terminal 7 includes positive connecting terminal and negative connecting terminal. The positive pole of first orbit is drawn forth on printed circuit board 5 and is anodal connecting terminal, and the negative pole of first orbit is established ties the positive pole of second orbit, and the negative pole of second orbit is established ties the positive pole of third orbit, and the negative pole of third orbit is drawn forth on printed circuit board 5 and is connected terminal, anodal connecting terminal is connected to DC power supply's positive pole after connecting gradually emitting diode 8, switch 9 through the wire, negative pole connecting terminal is connected to DC power supply's negative pole through the wire. The direct current power supply selects batteries and is fixed on the back of the test mainboard 1 through the battery box.
And a grounding resistance test terminal 10, an insulation resistance test terminal 11 and an inductance test terminal 12 are respectively led out from two ends of the connecting terminal 7 through leads. The positive connecting terminal is connected to a positive testing terminal of the grounding resistance testing terminal 10 through a lead, and the negative connecting terminal is connected to a negative testing terminal of the grounding resistance testing terminal 10 through a lead; the positive connecting terminal is connected to a positive testing terminal of the insulation resistance testing terminal 11 through a lead, and the negative connecting terminal is connected to a negative testing terminal of the insulation resistance testing terminal 11 through a lead; the positive terminal is connected to the positive test terminal of the inductance test terminal 12 through a wire, and the negative terminal is connected to the negative test terminal of the inductance test terminal 12 through a wire.
The grounding resistance tester is connected with a grounding resistance test terminal 10 through a connecting wire and tests the grounding resistance of the first track, the second track and the third track after the first track, the second track and the third track are connected in series; the insulation resistance tester is connected with the insulation resistance test terminal 11 through a connecting wire and tests the insulation resistance after the first track, the second track and the third track are connected in series; the inductance tester is connected with the inductance testing terminal 12 through a connecting wire, and tests the voltage and the resistance value of the first track, the second track and the third track which are connected in series in the direct current loop.
The wires all pass through connecting holes formed in the panel of the test mainboard 1 and are connected with the test terminals on the back of the test mainboard 1. The ground resistance test terminal 10, the insulation resistance test terminal 11 and the inductance test terminal 12 are sequentially arranged on the upper portion of the panel of the test mainboard 1 from left to right. The test mainboard 1 corresponding to the ground resistance test terminal 10, the insulation resistance test terminal 11 and the inductance test terminal 12 is provided with one-to-one labels, so that the use of testers is facilitated. The both sides of test mainboard 1 are equipped with handle 13 respectively, make things convenient for the installation and the dismantlement of test mainboard 1.
The lower part is provided with standing groove 14 that is used for placing the three-rail magnetic head in the panel of test mainboard 1, and the structure of standing groove 14 corresponds with the structure of three-rail magnetic head, the upper and lower both ends of standing groove 14 are provided with the guide post respectively, and two guide posts correspond with the mounting hole on the three-rail magnetic head body 2, and when needs tested the three-rail magnetic head, the mounting hole of three-rail magnetic head passed the guide post, place in standing groove 14, make things convenient for taking of three-rail magnetic head, the operator of being convenient for uses. The outer side of the printed circuit board 5, which is close to the three-rail magnetic head, is provided with two parallel spaced limiting plates 15, the limiting plates 15 are used for limiting the tail side of the flexible circuit board 3, so that the deviation of the splicing position of the flexible circuit board 3 is avoided, and the flexible circuit board 3 is conveniently connected with an FPC connector. The limiting plate 15 comprises a horizontal plate and a vertical plate integrally arranged with the inner side of the horizontal plate, a fixing hole is formed in the horizontal plate, and the horizontal plate is fixed on the test main board 1 through a bolt penetrating through the fixing hole.
An electrical property test frock, its test procedure: firstly, a three-rail magnetic head with qualified performance is taken for testing and is used for debugging a testing tool. Placing the three-rail magnetic head in the placing groove 14, inserting and positioning the flexible circuit board 3 and the connector 6 on the printed circuit board 5, respectively connecting each test terminal on the test fixture with a corresponding tester, turning on a switch 9 on a circuit, observing whether the light-emitting diode 8 is conducted, then turning on each tester, observing test data of each tester, turning off the circuit switch when each circuit on the test fixture works normally, and taking down a qualified product;
then taking the three-rail magnetic head to be tested for testing, placing the three-rail magnetic head in the placing groove 14, inserting and positioning the flexible circuit board 3 and the connector 6 on the printed circuit board 5, turning on the switch 9, observing the state of the light-emitting diode 8, and conducting the series circuit of the three rails if the light-emitting diode 8 is lighted, so as to complete the test of circuit conduction; and then observing the test data of the ground resistance tester, the test data of the insulation resistance tester and the voltage and the resistance value measured by the inductance tester, wherein if the data of the ground resistance and the insulation resistance are in a reasonable range, the performances of the ground resistance and the insulation resistance are qualified, and if the three-rail magnetic head has coil short circuit, the voltage change value is not large, and the resistance value becomes very small. And after the test is finished, closing the switch 9, placing the tested three-rail magnetic head in a corresponding qualified or unqualified area, and then carrying out the next cycle of tested piece detection.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be covered by the present invention within the technical scope of the present invention, and the technical solution obtained by replacing or changing the technical idea of the present invention with equivalents.
Claims (6)
1. The utility model provides an electric capability test frock, is surveyed the three-rail magnetic head of main part for including three-rail magnetic head body (2) and flexible circuit board (3), its characterized in that: the testing device comprises a testing box and a testing mainboard (1), wherein an etched printed circuit board (5) is installed on a panel of the testing mainboard (1), the printed circuit board (5) is in butt joint with a flexible circuit board (3) through a connector (6), the connector (6) leads out pins of a first track, a second track and a third track on the flexible circuit board (3) to the printed circuit board (5), the printed circuit board (5) connects the first track, the second track and the third track in series through copper wires and leads out two connecting terminals (7), and the two connecting terminals (7) are connected to a direct-current power supply after being connected with a light-emitting diode (8) and a switch (9) in series through wires;
a ground resistance test terminal (10), an insulation resistance test terminal (11) and an inductance test terminal (12) are respectively led out from two ends of the connecting terminal (7) through leads, the ground resistance test terminal (10) is connected to a ground resistance tester through a connecting wire, and the ground resistance tester tests the ground resistance after the first track, the second track and the third track are connected in series; the insulation resistance test terminal (11) is connected to an insulation resistance tester through a connecting wire, and the insulation resistance tester tests the insulation resistance after the first track, the second track and the third track are connected in series; the inductance test terminal (12) is connected to an inductance tester through a connecting wire, and the inductance tester tests the voltage and the resistance value of the first track, the second track and the third track which are connected in series in the direct current loop.
2. The electrical performance test tool of claim 1, wherein: the inner bottom surface of the test box is provided with four supporting legs with internal threads on the top surfaces, and the test main board (1) is fixed on the supporting legs through screws.
3. The electrical performance test tool of claim 1, wherein: the panel of the test mainboard (1) is provided with connecting holes, the wires penetrate through the connecting holes to be connected with the test terminals on the back of the test mainboard (1), and handles (13) are arranged on two sides of the test mainboard (1) respectively.
4. The electrical performance test tool of claim 1, wherein: ground resistance test terminal (10), insulation resistance test terminal (11) and inductance test terminal (12) set gradually on the upper portion of the panel of test mainboard (1) from a left side to the right side, test mainboard (1) that ground resistance test terminal (10), insulation resistance test terminal (11) and inductance test terminal (12) correspond is equipped with the label of one-to-one.
5. The electrical performance test tool of claim 1, wherein: the middle lower part of the panel of the test main board (1) is provided with a placing groove (14) for placing the three-rail magnetic head, and guide columns corresponding to mounting holes in the three-rail magnetic head are respectively arranged in the placing groove (14).
6. The electrical performance test tool of claim 1, wherein: and limiting plates (15) which are used for guiding and limiting the flexible circuit board (3) are arranged on the outer side of the connector (6) at intervals in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020448745.5U CN212060536U (en) | 2020-03-31 | 2020-03-31 | Electrical performance test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020448745.5U CN212060536U (en) | 2020-03-31 | 2020-03-31 | Electrical performance test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212060536U true CN212060536U (en) | 2020-12-01 |
Family
ID=73539490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020448745.5U Active CN212060536U (en) | 2020-03-31 | 2020-03-31 | Electrical performance test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212060536U (en) |
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2020
- 2020-03-31 CN CN202020448745.5U patent/CN212060536U/en active Active
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