CN215263845U

CN215263845U - Switch card of circuit board testing machine

Info

Publication number: CN215263845U
Application number: CN202120424282.3U
Authority: CN
Inventors: 林咏华
Original assignee: Shenzhen Kaima Times Technology Co ltd
Current assignee: Shenzhen Kaima Times Technology Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-21
Anticipated expiration: 2031-02-26

Abstract

The utility model relates to a circuit board test machine switch card, including PCB board and terminal. The PCB board is provided with a test circuit for testing the circuit board. The terminal includes the mount pad and locates the pin of mount pad, and the pin includes link and is used for the test end of test circuit board, and test circuit is connected to the link. The pin pins are arranged in an array, and the center distance between the test ends of two adjacent pin pins is 0.5 mm-0.898 mm. According to the switch card of the circuit board testing machine, the pin comprises the testing end and the connecting end, and the connecting end is electrically connected with the testing circuit to realize the electrical connection between the pin and the testing circuit. And placing the circuit board at the testing end of the pin, and testing the performance of the circuit board through the testing circuit. Because the pin needles are arranged in the mounting seat in an array manner, the center distance between the testing ends of two adjacent pin needles is 0.5-0.898 mm, namely, the testing density is increased by adjusting the center distance between the testing ends of two adjacent pin needles, so as to meet the testing requirement of the high-density circuit board.

Description

Switch card of circuit board testing machine

Technical Field

The utility model relates to a circuit board check out test set technical field especially relates to a circuit board test machine switch card.

Background

Printed circuit boards are providers of electrical connections for electronic components and are widely used in electrical equipment or control systems. In order to ensure the quality of the printed circuit board, a tester is required to test the performance of the printed circuit board before the printed circuit board leaves a factory, and unqualified printed circuit boards are selected.

With the development of electronic terminal products toward miniaturization, printed circuit boards are also increasingly being increased in integration density to meet the demand in order to match the miniaturization and arraying of electronic component packages. However, the conventional circuit board tester switch card cannot meet the test requirements of the 5G high-density printed circuit board.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a switch card for a circuit board testing machine, which can meet the testing requirements of high-density circuit boards.

A circuit board tester switch card, comprising:

the PCB board is provided with a test circuit for testing the circuit board; and

the terminal comprises a mounting seat and a pin arranged on the mounting seat, the pin comprises a connecting end and a testing end used for testing a circuit board, and the connecting end is connected to the testing circuit; the pin needles are arranged in an array, and the center distance between the testing ends of two adjacent pin needles is 0.5-0.898 mm.

In one embodiment, the center-to-center distance between the testing ends of two adjacent pin pins is 0.736 mm.

In one embodiment, the terminals are provided in plurality, and the terminals are detachably arranged on the PCB.

In one embodiment, the mounting seat is hooked on the top of the PCB, and one end of the pin extends out of the top of the mounting seat to form the testing end; the other end of the pin needle extends out of the side part of the mounting seat to form the connecting end; the upper portion of PCB board is equipped with the via hole that is the array arrangement, the link wears to locate in the via hole, and with the pore wall welding of via hole.

In one embodiment, the switch card of the circuit board testing machine further comprises a beam, wherein the beam is provided with a mounting groove, the terminal is arranged in the mounting groove, and the PCB is attached to the side of the beam and connected with the beam.

In one embodiment, two PCB boards are arranged and are respectively attached to two sides of the cross beam; the two PCB boards all are equipped with the terminal, two the terminal of PCB board is laminated mutually and is located in the mounting groove.

In one embodiment, the tops of the mounting seat and the testing end are higher than the top of the cross beam, and the distance between the top of the testing end and the top of the cross beam is 0.25-1 mm.

In one embodiment, the switch card of the circuit board testing machine further comprises a pressing plate, the pressing plate and the beam are respectively arranged on two sides of the PCB, and the pressing plate and the beam are clamped to fix the PCB; the circuit board testing machine switch card further comprises an insulating protection body, and the insulating protection body is arranged between the PCB and the pressing plate.

In one embodiment, a positioning groove is formed in a side portion of the beam, and the PCB, the pressing plate and the insulating protector are all arranged in the positioning groove.

In one embodiment, the circuit board testing machine switch card further comprises a fastener, and the fastener penetrates through the cross beam, the PCB, the insulating protective body and the pressing plate to be fixedly connected.

In the switch card of the circuit board testing machine, the pin comprises the testing end and the connecting end, and the connecting end is electrically connected with the testing circuit to realize the electrical connection between the pin and the testing circuit. And placing the circuit board at the testing end of the pin, and testing the performance of the circuit board through the testing circuit. Because the pin needles are arranged in the mounting seat in an array manner, the center distance between the testing ends of two adjacent pin needles is 0.5-0.898 mm, namely, the testing density is increased by adjusting the center distance between the testing ends of two adjacent pin needles, so as to meet the testing requirement of the high-density circuit board.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded schematic view of a switch card of a circuit board testing machine according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a top view of a switch card of a circuit board tester according to an embodiment of the present invention;

FIG. 4 is a schematic enlarged view of a portion of FIG. 3 at B;

fig. 5 is a front view of a switch card of a circuit board tester according to an embodiment of the present invention;

fig. 6 is a partially enlarged schematic view of a portion at C in fig. 5.

Description of the drawings: 10. a PCB board; 20. a terminal; 21. a mounting seat; 22. a pin; 221. a connecting end; 222. a test end; 30. a cross beam; 31. mounting grooves; 32. positioning a groove; 40. an insulating protector; 50. pressing a plate; 60. a fastener.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1, fig. 2 and fig. 4, fig. 1 shows a schematic structural diagram of a switch card of a circuit board testing machine according to an embodiment of the present invention, fig. 2 shows a schematic partial enlarged view of a position a in fig. 1, and fig. 4 shows a schematic partial enlarged view of a position C in fig. 5. The utility model provides a circuit board test machine switch card, including PCB board 10 and terminal 20. The PCB board 10 is provided with a test circuit for testing the circuit board. The terminal 20 includes a mounting base 21 and a pin 22 disposed on the mounting base 21, the pin 22 includes a connection end 221 and a test end 222 for testing the circuit board, and the connection end 221 is connected to the test circuit. The leads 22 are arranged in an array, and the center-to-center distance L between the testing ends 222 of two adjacent leads 22 is 0.5 mm-0.898 mm.

Alternatively, the leads 22 are arranged in a matrix on the mounting base 21, or the leads 22 are arranged in a meter shape on the mounting base 21.

In the switch card of the circuit board testing machine, the pin 22 includes a testing end 222 and a connecting end 221, and the connecting end 221 is electrically connected to the testing circuit to electrically connect the pin 22 and the testing circuit. The circuit board is placed at the testing end 222 of the pin 22, and the performance of the circuit board is tested through the testing circuit. Because the pins 22 are arranged in the mounting base 21 in an array, the center-to-center distance L between the testing ends 222 of two adjacent pins 22 is 0.5 mm-0.898 mm, that is, the testing density is increased by adjusting the center-to-center distance L between the testing ends 222 of two adjacent pins 22, so as to meet the testing requirements of the high-density circuit board.

Alternatively, referring to fig. 2, 3 and 4, fig. 3 shows a top view of a circuit board tester switch card according to an embodiment of the present invention. The center-to-center distance L between the testing ends 222 of two adjacent pins 22 is 0.736mm, i.e., the standard grid distance L of the circuit board tester switch card is 28.976 mil. It can be understood that if the center-to-center distance L between the testing ends 222 of two adjacent pins 22 is 0.736mm, the switch card is a twelve-fold switch card of a density tester. In this way, by increasing the density of the testing ends 222 of the leads 22, the testing requirements of high-density circuit boards can be met.

It should be noted that, during the circuit board test, the center distance between the test ends 222 of two adjacent pin pins 22 is determined according to the number of test points of the circuit board, so that the grid distance of the switch card of the circuit board tester is matched with the number of test points of the circuit board, thereby meeting the test requirements of the circuit boards with different densities.

In one embodiment, the mounting base 21 is an injection molded body that is integrally formed with the pin 22. Specifically, the leads 22 are arranged in an array, and the mounting base 21 and the leads 22 are formed into an integral structure by injection molding. Thus, the dimensions of the terminal 20 are accurate, and the quality of the injection molded terminal 20 is more stable.

In one embodiment, referring to fig. 1 and 2, the mounting base 21 is hooked on the top of the PCB board 10, and one end of the lead pin 22 extends out of the top of the mounting base 21 to form a testing end 222. The other end of the pin 22 extends from the side of the mounting base 21 to form a connection end 221. The upper portion of the PCB 10 is provided with via holes arranged in an array, and the connection terminals 221 are inserted into the via holes and welded to the wall of the via holes. Therefore, the connecting end 221 is welded with the hole wall of the via hole, so that the terminal 20 and the PCB 10 are connected into a whole, and the stability and reliability of the circuit board test are ensured. Moreover, the test terminal 222 is located at the top of the mounting base 21, so as to facilitate the testing of the circuit board.

Specifically, referring to fig. 1 and 2, the side portion and the top portion of the mounting seat 21 are connected to form an inverted L-shape. The side of the mounting seat 21 is correspondingly disposed on the side of the PCB 10, and one end of the pin 22 extends from the side of the mounting seat 21 and penetrates through the through hole of the PCB 10. The top of the mounting base 21 is correspondingly disposed on the top of the PCB board 10, and the other end of the pin 22 extends from the top of the mounting base 21 to form a testing end 222.

Alternatively, referring to fig. 2, the connection end 221 is connected to the wall of the via hole by soldering. The test circuit is electrically connected with the hole wall of the via hole, and the connection end 221 is inserted into the via hole of the PCB 10 and soldered with the hole wall of the via hole, so that the pin 22 is electrically connected with the test circuit of the PCB 10.

In one embodiment, referring to fig. 1, the terminals 20 are provided in plurality, and the plurality of terminals 20 are detachably provided to the PCB board 10. Like this, when certain terminal 20 damages, demolish the terminal 20 of damage and change can, need not to demolish whole terminal 20, practice thrift the cost.

In one embodiment, referring to fig. 1, the board tester switch card further includes a cross bar 30. The beam 30 is provided with a mounting groove 31, the terminal 20 is arranged in the mounting groove 31, and the PCB 10 is attached to the side of the beam 30 and connected to the beam 30. Thus, the beam 30 plays a supporting role, and the acting force applied to the terminal 20 from the outside during plugging can be transmitted to the beam 30, so that the interaction between the terminal 20 and the PCB 10 is small. In addition, the terminal 20 is stably supported by the beam 30, so that the test end 222 of the pin 22 can be effectively prevented from being damaged, the reliability of the circuit board test can be ensured, and meanwhile, the connection end 221 of the pin 22 can be effectively prevented from being damaged, and the connection end 221 and the test circuit can be reliably connected.

Further, referring to fig. 5 and 6, fig. 5 shows a front view of a switch card of a circuit board testing machine according to an embodiment of the present invention, and fig. 6 shows a schematic partial enlarged view at C in fig. 5. The top of the mounting seat 21 and the top of the testing end 222 are both higher than the top of the cross beam 30, and the distance H between the top of the testing end 222 and the top of the cross beam 30 is 0.25 mm-1 mm. Thus, when the circuit board is placed on the testing end 222 of the pin 22, the beam 30 will not interfere with the circuit board, and the circuit board can be ensured to be better contacted with the terminal 20.

Specifically in the present embodiment, referring to FIG. 6, the distance H between the top of the testing end 222 and the top of the beam 30 is 0.536 mm. Thus, the interference of the beam 30 to the circuit board can be avoided, and the circuit board can be ensured to be in better contact with the terminal 20.

In one embodiment, referring to fig. 1, two PCB boards 10 are provided, and the two PCB boards 10 are respectively attached to two sides of the beam 30. The two PCB boards 10 are provided with terminals 20, and the lateral parts of the terminals 20 of the two PCB boards 10 are attached to and arranged in the mounting grooves 31. It will be appreciated that one or more terminals 20 are provided on a PCB board 10 to form a switch card; in the present embodiment, two switch cards are assembled on one beam 30; specifically, the terminals 20 of the two switch cards are attached to the side portion away from the PCB board 10 and are disposed in the mounting groove 31. Therefore, the switch card of the circuit board testing machine forms a small module, and subsequent installation, use and maintenance are facilitated.

In one embodiment, referring to fig. 1, the board tester switch card further comprises a platen 50. The pressing plate 50 and the beam 30 are respectively arranged at two sides of the PCB 10, and the pressing plate 50 and the beam 30 are clamped to fix the PCB 10. Thus, the pressing plate 50 and the beam 30 clamp and fix the PCB 10 and the terminal 20, so that the switch card of the circuit board testing machine has a stable and reliable structure and long service life.

Further, referring to fig. 1, the circuit board tester switch card further includes an insulating protector 40, and the insulating protector 40 is disposed between the PCB 10 and the pressing plate 50. In this way, the insulating protector 40 can protect the PCB 10 and the leads 22 from insulation.

Further, referring to fig. 1 and 5, the circuit board tester switch card further includes a fastener 60, and the fastener 60 passes through the beam 30, the PCB 10, the insulating protector 40, and the pressing plate 50 to be fixedly connected. Alternatively, the fasteners 60 are pins, bolts, or the like. Specifically, the cross beam 30, the PCB 10, the insulating protector 40, and the pressing plate 50 are provided with mounting holes adapted to the fasteners 60, and the fasteners 60 pass through the mounting holes to fixedly connect the cross beam 30, the PCB 10, the insulating protector 40, and the pressing plate 50. Therefore, on one hand, the cross beam 30, the PCB 10, the insulating protective body 40 and the pressing plate 50 are connected into a whole through the fastener 60, so that the switch card of the circuit board testing machine is stable and reliable in structure and long in service life; on the other hand, the PCB board 10, the insulating protector 40, and the pressure plate 50 are detachably mounted to the cross member 30 by fasteners 60, which facilitates the removal, maintenance, or replacement.

In one embodiment, referring to fig. 1 and 5, the lateral portion of the beam 30 is provided with a positioning groove 32, and the PCB board 10 is disposed in the positioning groove 32. Specifically, the PCB board 10, the insulating protector 40 and the pressing plate 50 are all limited in the positioning groove 32. So, the assembly of being convenient for makes the stable in structure of this circuit board test machine switch card reliable simultaneously.

In the description of the present invention, it should 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", "axial", "radial", "circumferential", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only for convenience of description and simplified description, but not for convenience of description

The device or element so referred to must be oriented, constructed and operated in a particular manner and should not be construed as limiting the 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a circuit board test machine switch card which characterized in that includes:

2. The circuit board testing machine switch card of claim 1, wherein the center-to-center distance between the testing ends of two adjacent pins is 0.736 mm.

3. The circuit board testing machine switch card of claim 1, wherein a plurality of terminals are provided, and a plurality of terminals are detachably provided on the PCB.

4. The circuit board testing machine switch card of claim 1, wherein the mounting base is hooked on the top of the PCB board, and one end of the pin extends out from the top of the mounting base to form the testing end; the other end of the pin needle extends out of the side part of the mounting seat to form the connecting end; the upper portion of PCB board is equipped with the via hole that is the array arrangement, the link wears to locate in the via hole, and with the pore wall welding of via hole.

5. The circuit board testing machine switch card according to any one of claims 1 to 4, further comprising a beam, wherein the beam is provided with a mounting groove, the terminal is disposed in the mounting groove, and the PCB is disposed on a side of the beam and connected to the beam.

6. The switch card of the circuit board testing machine as claimed in claim 5, wherein there are two PCB boards, and the two PCB boards are respectively attached to two sides of the beam; the two PCB boards all are equipped with the terminal, two the terminal of PCB board is laminated mutually and is located in the mounting groove.

7. The circuit board testing machine switch card of claim 5, wherein the tops of the mounting seat and the testing end are higher than the top of the beam, and the distance between the top of the testing end and the top of the beam is 0.25 mm-1 mm.

8. The circuit board testing machine switch card of claim 5, further comprising a pressing plate, wherein the pressing plate and the beam are respectively disposed on two sides of the PCB, and the pressing plate and the beam are clamped to fix the PCB;

the circuit board testing machine switch card further comprises an insulating protection body, and the insulating protection body is arranged between the PCB and the pressing plate.

9. The circuit board testing machine switch card of claim 8, wherein a positioning groove is formed on a side portion of the beam, and the PCB, the pressing plate and the insulation protection body are all disposed in the positioning groove.

10. The circuit board testing machine switch card of claim 8, further comprising a fastener that passes through the beam, the PCB, the insulating protector, and the pressure plate for fixed connection.