CN108614185B - Needle seat reverse plug testing device, ICT tester and use method thereof - Google Patents
Needle seat reverse plug testing device, ICT tester and use method thereof Download PDFInfo
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- CN108614185B CN108614185B CN201810525458.7A CN201810525458A CN108614185B CN 108614185 B CN108614185 B CN 108614185B CN 201810525458 A CN201810525458 A CN 201810525458A CN 108614185 B CN108614185 B CN 108614185B
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- 238000012360 testing method Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 45
- 238000003780 insertion Methods 0.000 claims abstract description 33
- 230000037431 insertion Effects 0.000 claims abstract description 33
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
The invention discloses a needle seat reverse insertion testing device, an ICT tester and a use method thereof, wherein an upper step and a lower step of a needle seat to be tested have height difference, and the needle seat reverse insertion testing device comprises: the switch-type pressing piece is internally provided with a first conductive piece and a second conductive piece with adjustable intervals, and is provided with a lower step pressed against the needle seat, a disconnection state in which the first conductive piece and the second conductive piece are separated, and a conduction state in which the first conductive piece and the second conductive piece are pressed against the upper step of the needle seat to conduct; and the testing circuit is used for testing the resistance value between the first end and the second end of the switch-type pressing piece when the switch-type pressing piece is in the on state and the off state. The automatic monitoring needle seat of the needle seat reverse plug testing device solves the problems that in the prior art, the lack of testing equipment for testing whether the needle seat is reversely plugged on the circuit board is caused, operators are required to check the circuit boards one by one, the detection efficiency is low, the checking accuracy is poor and the checking cost is high.
Description
Technical Field
The invention relates to the technical field of test jigs, in particular to a needle seat reverse insertion testing device, an ICT tester and a use method thereof.
Background
With the continuous development of electronic technology, electronic products are continuously enriching our lives, and as the most important part, whether electronic components on a circuit board can be correctly installed directly affects the quality of electronic equipment. The needle seat is used as a common electrical element on the circuit board, when the needle seat is plugged onto the surface of the circuit board, the step direction of the needle seat is easily plugged reversely to cause the position of the contact pin to deviate, if the problem of reverse plugging occurs, the consistency of similar printed boards can be influenced, so that the contact pin and the needle seat can not be plugged through automatic equipment, and even the problem that the circuit board can not be used due to the arrangement mode of the electronic element on the circuit board can be changed.
In the prior art, test equipment for testing whether the needle seat is reversely inserted on the circuit board is lacked, if the needle seat is required to be correctly installed, the circuit board can only be inspected one by one through manual work of an operator, the detection efficiency is extremely low, the production efficiency of the circuit board is seriously affected, and the manual inspection mode cannot ensure that a large number of unqualified products with reversely inserted needle seats still exist in the inspection accuracy.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems that the prior art lacks a needle seat reverse insertion testing device for detecting whether the needle seat is reversely inserted, and only can rely on manual checking of the needle seat reverse insertion to cause the problems of low detection accuracy, poor detection efficiency and high detection cost. Therefore, the invention provides a needle seat reverse plug testing device, wherein an upper step and a lower step of a needle seat to be tested have a certain height difference, the upper step is higher than the lower step, and a pin connected with a plug row is positioned on the lower step.
The needle seat reverse insertion testing device comprises
The switch-type pressing piece is internally provided with a first conductive piece and a second conductive piece with adjustable intervals, and is provided with a disconnection state of being pressed against the lower step of the needle seat and separating the first conductive piece from the second conductive piece, and a conduction state of being pressed against the upper step of the needle seat and conducting the first conductive piece and the second conductive piece;
and the first end of the testing circuit is electrically connected with the first conductive piece, and the second end of the testing circuit is electrically connected with the second conductive piece and is used for testing the resistance value between the first end and the second end when the switch-type pressing piece is in the on state and the off state.
The switch-type pressing member further includes a biasing member that applies a biasing force to the first conductive member and/or the second conductive member to separate them from each other, and the switch-type pressing member presses the upper step to conduct the first conductive member and the second conductive member by overcoming the biasing force.
The biasing member is a spring, and two ends of the spring are respectively connected with the first conductive member and the second conductive member.
The resistance value between the first end and the second end approaches to 0 when the switch-mode pressing piece is in the conducting state.
The first conductive member and the second conductive member are metal conductors.
The switch-type casting die further comprises a protective sleeve sleeved on the outer sides of the first conductive piece and the second conductive piece.
The switch-type casting die is provided with a first electric connecting end and a second electric connecting end which are arranged in an exposed mode and are respectively connected with the first conductive piece and the second conductive piece, the first end is connected to the first electric connecting end, and the second end is connected to the second electric connecting end.
The test circuit includes: and the resistance meter is provided with a positive electrode lead connected with one of the first end and the second end and a negative electrode lead connected with the other of the first end and the second end.
The ICT tester comprises the needle seat reverse insertion testing device, and the needle seat reverse insertion testing device is integrated on a top plate of the ICT tester.
The test method of the needle seat reverse plug test device comprises the following steps:
the switch-type pressing piece moves downwards by a preset distance to be pressed against the needle seat to be detected;
if the resistance value of the switch-type pressing piece measured by the test circuit is a constant value approaching zero, the needle seat is reversely inserted;
if the resistance value of the switch-type pressing piece measured by the test circuit is infinite, the needle seat is correctly installed.
The technical scheme of the invention has the following advantages:
1. according to the needle seat reverse insertion testing device, whether the needle seat with the height difference of the upper step and the lower step is reversely inserted or not can be measured through the switch-type pressing piece matched with the testing circuit, the first conductive piece and the second conductive piece with adjustable intervals are arranged in the switch-type pressing piece, when the switch-type pressing piece moves towards the lower step position of the preset needle seat on the circuit board to a set fixed height, if the needle seat reverse insertion testing piece is pressed on the upper step of the needle seat, the upper step can stop the switch-type pressing piece to move downwards continuously so that the first conductive piece and the second conductive piece positioned at the upper part are communicated, and at the moment, the resistance value measured by the testing circuit is a constant value resistance value which approaches zero between the first end and the second end of the first conductive piece and the second conductive piece; if the needle seat is provided with the correct switch-type pressing piece, the preset plan is arranged to be pressed on the lower step of the needle seat, the preset descending height of the switch-type pressing piece is enough, the first conductive piece and the second conductive piece are not close to each other to be connected in a contact mode, at the moment, because a gap is reserved between the first conductive piece and the second conductive piece, the resistance of air is very large when the air is not ionized, and therefore the resistance value measured by the test circuit is infinite. Whether the needle seat on the automatic detection circuit board is installed correctly can be realized through the needle seat plug-in testing device, whether the needle seat is plugged-in or not can be judged through observing the change of the resistance value, the advantage of high detection efficiency is realized, and the problems that in the prior art, the detection accuracy is low, the detection efficiency is poor and the detection cost is high due to the fact that the needle seat plug-in can only be checked manually are avoided.
2. According to the needle seat reverse insertion testing device, the biasing member is arranged, and the biasing member applies the biasing force for separating the first conductive member from the second conductive member, so that the first conductive member and the second conductive member are prevented from being connected by accident factors, and the testing circuit can not error the measured result, and when the second conductive member is abutted against the upper step, the driving force for driving the switch-type pressing member to move towards the position of the lower step of the preset needle seat drives the first conductive member to overcome the biasing force brought by the biasing member and be connected with the second conductive member, so that the testing circuit can measure the fixed-value resistance value of the first conductive member and the second conductive member, which is close to zero.
3. The needle seat reverse insertion testing device provided by the invention adopts the spring as the biasing member, and has the advantages of convenience in purchase and low production and maintenance cost.
4. According to the needle seat reverse insertion testing device, the protective sleeves are arranged on the outer sides of the first conductive piece and the second conductive piece and used for preventing other parts from touching the first conductive piece and/or the second conductive piece to influence the accuracy of the resistance measured by the testing circuit, so that the measuring result of the needle seat reverse insertion testing device is influenced.
5. According to the needle seat reverse insertion testing device, the first conductive piece and the second conductive piece are arranged to be metal conductors, so that the resistance value measured by the testing circuit approaches to 0 when the switch-type pressing piece is in a conducting state, the problem that the resistance range of the testing circuit is set is avoided, and the false image that the resistance is infinite caused by the fact that the resistance of the first conductive piece and the second conductive piece measured when the resistance range is smaller than the maximum value of the resistance meter is avoided, and the needle seat reverse insertion testing device cannot accurately judge whether the needle seat is reversely inserted.
6. The pin seat reverse plug testing device provided by the invention has the advantages that the testing circuit comprises the resistor meter, and the resistance between the first end and the second end of the first conductive piece and the second conductive piece can be simply and effectively measured through the resistor meter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a device for testing reverse insertion of a needle stand when the needle stand is reversely inserted;
FIG. 2 is a schematic diagram of a device for testing the reverse insertion of a needle stand when the needle stand is correctly installed;
FIG. 3 is a schematic view of a switch-type press provided by the present invention;
reference numerals illustrate:
1-a needle stand; 2-up the step; 3-descending a step; 4-a switch-type pressing member; 5-a first conductive member; 6-a second conductive member; 7-a test circuit; 8-biasing member; 9-protecting sleeve; 10-a first electrical connection; 11-a second electrical connection; 12-resistance meter; 13-positive electrode lead; 14-a negative electrode lead; 15-an outer protective sleeve.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
The embodiment provides an ICT tester, which is provided with a needle seat reverse insertion testing device shown in fig. 1 and 2 on a top board of the ICT tester, wherein the needle seat reverse insertion testing device is used for measuring whether a needle seat on a circuit board placed on a carrier board is in reverse insertion or not, most of needle seats 1 applied to the circuit board are provided with an upper step 2 with higher height and a lower step 3 with lower height, and contact pins connected with a contact pin are positioned on the lower step 3.
As shown in fig. 1 to 3, the hub reverse insertion testing device includes:
the switch-type pressing piece 4 is arranged on the top plate of the ICT tester and driven by the top plate to move towards the carrier plate, the switch-type pressing piece 4 comprises a first conductive piece 5 and a second conductive piece 6, the resistance of the metal material of the first conductive piece 5 and the resistance of the second conductive piece 6 are close to zero, and the first conductive piece 5 and the second conductive piece 6 of the cylindrical structure apply biasing force which is separated to the first conductive piece 5 and the second conductive piece 6 through springs, so that the gap between the first conductive piece 5 and the second conductive piece 6 can be adjusted. The switch-type pressing piece 4 is in a disconnection state of being pressed against the lower step 3 of the needle seat 1, the first conductive piece 5 and the second conductive piece 6 to be separated under the biasing force of the spring; the second conductive piece 6 is propped against the upper step 2 of the needle seat 1, and the first conductive piece 5 is driven by the antenna plate to continuously descend so as to lead the first conductive piece 5 and the second conductive piece 6 to be connected and conducted; the switch-type pressing piece 4 is provided with a first electric connection end 10 and a second electric connection end 11 which are arranged in an exposed mode and are respectively connected with the first conductive piece 5 and the second conductive piece 6; wherein, as shown in fig. 3, a protective sleeve 9 is sleeved on one side of the first conductive piece 5 and the second conductive piece 6 which are far away from each other, the spring is sleeved outside the columnar body, and two ends of the spring are fixedly connected with the ends of the protective sleeve 9 sleeved on the first conductive piece 5 and the second conductive piece 6 respectively;
a test circuit 7 comprising: and a resistance meter 12, wherein the resistance meter 12 is used for testing the resistance value between the first end of the first conductive member 5 and the second end of the second conductive member 6 when the switch-type pressing member 4 is in the on state and the off state, and the resistance meter 12 is provided with a positive electrode lead 13 connected with the first end and a negative electrode lead 14 connected with the second end. When the switch-type pressing piece moves towards the lower step position of the needle seat preset on the circuit board to a set fixed height, if the needle seat is plugged into the switch-type pressing piece, the switch-type pressing piece can be pressed against the upper step of the needle seat, the upper step can stop the switch-type pressing piece from continuously moving downwards so as to enable the first conductive piece positioned at the upper part to be communicated with the second conductive piece, and at the moment, the resistance value measured by the test circuit is a constant value resistance value which is approximately zero between the first end and the second end of the first conductive piece and the second conductive piece; if the needle seat is provided with the correct switch-type pressing piece, the preset plan is arranged to be pressed on the lower step of the needle seat, the preset descending height of the switch-type pressing piece is enough, the first conductive piece and the second conductive piece are not close to each other to be connected in a contact mode, at the moment, because a gap is reserved between the first conductive piece and the second conductive piece, the resistance of air is very large when the air is not ionized, and therefore the resistance value measured by the test circuit is infinite. Whether the needle seat on the automatic detection circuit board is installed correctly can be realized through the needle seat plug-in testing device, whether the needle seat is plugged-in or not can be judged through observing the change of the resistance value, the advantage of high detection efficiency is realized, and the problems that in the prior art, the detection accuracy is low, the detection efficiency is poor and the detection cost is high due to the fact that the needle seat plug-in can only be checked manually are avoided.
The test method of the needle seat reverse insertion test device arranged on the ICT tester in the embodiment is as follows:
the switch-type pressing piece 4 moves downwards by a preset distance to be pressed against the needle seat 1 to be detected;
if the resistance value of the switch-type pressing piece 4 measured by the test circuit 7 is a fixed value approaching zero, the needle seat is reversely inserted;
if the resistance value of the switch-type pressing piece 4 measured by the test circuit 7 is infinite, the needle seat is installed correctly.
Example 2
This embodiment differs from embodiment 1 in that, as shown in fig. 3, a protective sleeve 9 is sleeved on the second conductive member 6, and the side of the protective sleeve 9 facing the needle holder 1 is a pointed structure avoiding the contact pin located on the upper step 2 of the needle holder 1. The protective sleeve 9 on the second conductive piece 6 is provided with the pointed end, so that the problem that the contact pin is damaged by the protective sleeve 9 and the contact pin in the use process of the needle seat reverse insertion testing device can be effectively prevented.
Example 3
The difference between this embodiment and embodiment 1 is that the first conductive member 5 and the second conductive member 6 are sleeved with a protective sleeve 9 on a side away from each other, and an outer protective sleeve 15 for covering the connection portion of the first conductive member 5 and the second conductive member 6 is further disposed between the two protective sleeves 9 on the first conductive member 5 and the second conductive member 6, respectively. The outer protective sleeve 15 is used for preventing other parts from touching the connection position of the first conductive part and the second conductive part to influence the accuracy of the resistance measured by the test circuit, thereby influencing the measurement result of the needle seat reverse insertion test device.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. A needle seat reverse plug testing method is characterized in that an upper step (2) and a lower step (3) of a needle seat (1) to be tested have a certain height difference, the needle seat reverse plug testing method is suitable for a needle seat reverse plug testing device, and the needle seat reverse plug testing device comprises
The switch-type pressing piece (4) is internally provided with a first conductive piece (5) and a second conductive piece (6) with adjustable intervals, and the switch-type pressing piece (4) is provided with a disconnection state of being pressed against the lower step (3) of the needle seat (1) and separating the first conductive piece (5) from the second conductive piece (6) and a conduction state of being pressed against the upper step (2) of the needle seat (1) and conducting the first conductive piece (5) and the second conductive piece (6);
a test circuit (7) having a first end electrically connected to the first conductive member (5) and a second end electrically connected to the second conductive member (6) for testing a resistance value between the first end and the second end of the switch-type pressing member (4) in the on-state and the off-state,
the switch-type pressing member (4) further comprises a biasing member (8) for applying a biasing force to separate the first conductive member (5) and/or the second conductive member (6), the switch-type pressing member presses the upper step (2) to conduct the first conductive member (5) and the second conductive member (6) by overcoming the biasing force,
the test method comprises the following steps:
the switch-type pressing piece (4) moves downwards by a preset distance to be pressed against the needle seat (1) to be detected;
if the resistance value of the switch-type pressing piece (4) measured by the test circuit (7) is a constant value approaching zero, the needle seat is reversely inserted;
if the resistance value of the switch-type pressing piece (4) measured by the test circuit (7) is infinite, the needle seat is installed correctly.
2. The method for testing the reverse insertion of a needle holder according to claim 1, wherein the biasing member (8) is a spring, and both ends of the spring are respectively connected to the first conductive member (5) and the second conductive member (6).
3. The needle hub reverse insertion testing method according to claim 1 or 2, wherein the resistance value between the first end and the second end approaches 0 when the switch-type pressing member (4) is in the on state.
4. A hub reverse insertion testing method according to claim 3, characterized in that the first conductive member (5) and the second conductive member (6) are metal conductors.
5. The needle hub reverse insertion testing method according to claim 1 or 2, wherein the switch-type pressing member (4) further comprises a protective sleeve (9) sleeved outside the first conductive member (5) and the second conductive member (6).
6. The method according to claim 1 or 2, characterized in that the switch-type pressing member (4) has a first electrical connection end (10) and a second electrical connection end (11) which are disposed in an exposed manner and are connected to the first conductive member (5) and the second conductive member (6), respectively, the first end being connected to the first electrical connection end (10) and the second end being connected to the second electrical connection end (11).
7. The hub reverse insertion testing method according to claim 1 or 2, wherein the testing circuit (7) comprises: and the resistance meter (12) is provided with a positive electrode lead (13) connected with one of the first end and the second end and a negative electrode lead (14) connected with the other of the first end and the second end.
8. An ICT tester, characterized in that: comprising a hub reverse insertion testing device for implementing the hub reverse insertion testing method of any of claims 1-7, said hub reverse insertion testing device being integrated on a ceiling and/or floor of said ICT tester.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810525458.7A CN108614185B (en) | 2018-05-28 | 2018-05-28 | Needle seat reverse plug testing device, ICT tester and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810525458.7A CN108614185B (en) | 2018-05-28 | 2018-05-28 | Needle seat reverse plug testing device, ICT tester and use method thereof |
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| CN108614185A CN108614185A (en) | 2018-10-02 |
| CN108614185B true CN108614185B (en) | 2024-04-09 |
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| CN110320437A (en) * | 2019-07-01 | 2019-10-11 | 江西洪都航空工业集团有限责任公司 | A kind of two-way priming system plug connection status recognition methods |
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| CN108614185A (en) | 2018-10-02 |
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