KR102474867B1 - Apparatus for testing soldering of PCB connector - Google Patents

Abstract

The present invention relates to a soldering inspection device for a PCB connector, which is particularly portable and can inspect connector soldering defects of a PCB board used as a TV backlight without time and space limitations, and has a different connection structure for each inch of an LED TV. A circuit pattern is formed so that the connector can also be inspected, and a connector is provided so that power is applied along the circuit pattern. a lower body placed on and coupled to a connector and provided with a socket for applying power to the PCB board through the connector; An upper body provided with a probe module provided on the upper side of the lower body and moving in a vertical direction by a user's manipulation and including a plurality of probes respectively contacting a plurality of soldering parts when moving downward, wherein the lower body includes: A switch operated by the user is provided according to the type in which the circuit pattern and each terminal of the connector are connected so that a closed circuit can be formed when a plurality of probes contact the corresponding soldering part while power is applied to the PCB board, It relates to a soldering inspection device for a PCB connector, characterized in that it is possible to determine whether or not a soldering part is defective according to whether the closed circuit is formed.

Description

Soldering inspection device for PCB connector {Apparatus for testing soldering of PCB connector}

The present invention relates to a soldering inspection device for a PCB connector, and more particularly, to a soldering inspection device for a PCB connector capable of inspecting defects in connector soldering of a PCB used as a TV backlight.

Technology development of an LED TV using an LED light source having high luminance and long lifespan as a backlight is in progress. In order to use an LED light source as a backlight in an LED TV, an LED bar is widely used. The LED bar is a bar-shaped PCB board (printed circuit board) and each LED provided on the PCB board. It includes a connector for providing external power to the LEDs.

The LED bar goes through a process of checking whether the connector is properly soldered after manufacturing, and for this purpose, a device that exclusively tests the soldering state of the connector is used. Such a connector test device is manufactured to inspect multiple sheets of a PCB board at once, but the manufacturing cost of the device is expensive and requires a separate installation space.

In addition, since the LED bar has a different structure in which the circuit pattern formed on the PCB board and the connector terminal are connected according to the inch of the LED TV, each inch has a pin block on which a probe to which a test signal is input is mounted. It has to be manufactured, and when the inch is different, it is inconvenient to replace it with the corresponding pin block.

1. Republic of Korea Patent No. 10-0785309 'FPCB Inspection Jig'

The present invention is intended to solve the above problems, and is portable and can inspect connector soldering defects of a PCB board used as a TV backlight without time and space limitations, and connectors having different connection structures for each inch of an LED TV are also available. An object of the present invention is to provide a soldering inspection device for a PCB connector that can be inspected.

In order to achieve the above object, the present invention, a soldering inspection device for a PCB connector, has a circuit pattern formed, a connector provided so that power is applied along the circuit pattern, and a plurality of soldered parts to which the circuit pattern and each terminal of the connector are connected and soldered. A lower body having a socket on which a PCB board formed on one side is placed on the upper side and is coupled to a connector to apply power to the PCB board through the connector; An upper body provided with a probe module provided on the upper side of the lower body and moving in a vertical direction by a user's manipulation and including a plurality of probes respectively contacting a plurality of soldering parts when moving downward, wherein the lower body includes: In a state where power is applied to the PCB board, a switch operated by the user is provided according to the type in which the circuit pattern and each terminal of the connector are connected so that a closed circuit can be formed when a plurality of probes come into contact with the corresponding soldering part. Depending on whether a closed circuit is formed, it is possible to determine whether a soldering part is defective.

In addition, the lower body is provided with a battery for supplying power and a buzzer for generating a sound, and a closed circuit formed by contacting the plurality of probes with corresponding soldering parts is configured so that current flows through the battery and the buzzer , If the buzzer does not sound, the soldering part may be determined to be defective.

In addition, on the upper surface of the lower body, a guide groove having a width corresponding to the width of the PCB board is recessed from one end toward the point where the socket is provided, and the connector among the PCB boards enters along the guide groove and is coupled with the socket. A guide jaw covering the edge of the upper surface of the lower portion may be formed.

In addition, the upper body is provided with a pusher that penetrates the upper surface and can be pressed elastically, and the probe module moves downward when the user presses the pusher, so that a plurality of probes are soldered corresponding thereto. access to wealth.

In addition, the switch is operated by on / off and is provided with a plurality, and each of the plurality of switches is turned on according to the type in which the circuit pattern and each terminal of the connector are connected to the upper body or the lower body. ) or off (Off) may be provided with a display that informs the user.

According to the present invention, a PCB substrate to be inspected is placed on the lower body at a place where a connector soldering defect inspection is required while being carried by a user, and the probe module is moved downward so that a plurality of probes come into contact with the corresponding soldering part on the PCB substrate. Therefore, it is possible to check whether the connector is properly soldered and connected to the PCB board according to whether or not a closed circuit is formed, so it is possible to inspect connector soldering defects of the PCB board used as the TV backlight without space limitations.

In addition, since a closed circuit suitable for inspecting a PCB board can be formed by operating a switch, it is not necessary to prepare a device for inspecting each PCB board used for each inch of an LED TV, thereby reducing cost and inspecting efficiency. can increase

1 is an orthogonal perspective view showing the structure of a soldering inspection device for a PCB connector according to the present invention;
2 is a rear perspective view showing the structure of a soldering inspection device for a PCB connector according to the present invention;
3 is a plan view showing the structure of a PCB board inspected by the soldering inspection device for a PCB connector according to the present invention;
4 is an exemplary view showing a state in which a PCB board enters the soldering inspection device for a PCB connector according to the present invention;
5 is an exemplary view showing a state in which a PCB board is entered into the soldering inspection device for a PCB connector according to the present invention and placed on the upper side of the lower body;
6 is a partially enlarged view showing a state in which a PCB board is placed on a lower body in a state in which a socket and a connector are coupled to a soldering inspection device for a PCB connector according to the present invention;
7 and 8 are cross-sectional views showing a process in which a probe module applied to a soldering inspection device for a PCB connector according to the present invention operates and comes into contact with a soldering part;
9 is a circuit diagram showing an electrical connection state between components applied to a soldering inspection device for a PCB connector according to the present invention;
10 and 11 are exemplary views showing a state in which a switch applied to a soldering inspection device for a PCB connector according to the present invention is operated according to a display unit.

In the present invention, since it is portable, it is possible to inspect connector soldering defects of a PCB board used as a TV backlight without time and space limitations, and a circuit pattern is formed so that connectors having different connection structures for each inch of an LED TV can be inspected. And a connector is provided so that power is applied along the circuit pattern, and a PCB board formed on one end of a plurality of soldering parts to which the circuit pattern and each terminal of the connector are connected and soldered is placed on the upper side, and coupled to the connector through the connector A lower body provided with a socket for applying power to the PCB board; An upper body provided with a probe module provided on the upper side of the lower body and moving in a vertical direction by a user's manipulation and including a plurality of probes respectively contacting a plurality of soldering parts when moving downward, wherein the lower body includes: A switch operated by the user is provided according to the type in which the circuit pattern and each terminal of the connector are connected so that a closed circuit can be formed when a plurality of probes contact the corresponding soldering part while power is applied to the PCB board, We propose a soldering inspection device for a PCB connector, characterized in that it is possible to determine whether or not a soldering part is defective according to whether the closed circuit is formed.

The scope of the present invention is not limited to the embodiments described below, and can be variously modified and implemented by those skilled in the art within the scope of not departing from the technical gist of the present invention.

Hereinafter, a soldering inspection device for a PCB connector according to the present invention will be described in detail with reference to FIGS. 1 to 11 attached.

As shown in FIGS. 1 and 2, the soldering inspection device for a PCB connector according to the present invention includes a lower body 100 on which a PCB substrate 10 to be inspected is placed, and an upper part equipped with a probe module 210 for inspection. It includes the body 200.

The PCB substrate 10 in the present invention is used as an LED TV backlight and can form a structure in which a plurality of LEDs 14 are arranged at predetermined intervals, but is not necessarily limited thereto, and in some drawings the PCB substrate ( 10), an LED 14 that can be installed on is omitted from the illustration. As shown in FIG. 3 , the circuit pattern 11 is formed on the PCB substrate 10 . For example, different circuit patterns 11 may be formed for each inch of the LED TV. In addition, a connector 12 is provided on one end of the PCB board 10 to allow power to be applied along the circuit pattern 11 . At this time, each terminal of the connector 12 has a different connection structure according to the circuit pattern 11, so that various types of connection structures can be achieved. In addition, the circuit pattern 11 and each terminal of the connector 12 are contacted and a plurality of soldering parts 13 are formed on the PCB board 10 and the corresponding parts are soldered. The plurality of soldering parts 13 are, for example, One end side of the PCB board 10 is adjacent to the connector 12 and may be formed in a line.

The lower body 100 may be formed in the form of, for example, a rectangular enclosure, and as shown in FIGS. 4 to 8, the above-described PCB board 10 is placed on the upper side, and the connector provided on the PCB board 10. A socket 110 coupled to 12 and applying power to the PCB board 10 through the connector 12 is provided. The lower body 100 may be formed so that the entire PCB substrate 10 is placed, but considering portability and miniaturization, it is preferable to form a part of the PCB substrate 10 to be placed. For example, the lower body 100 is provided with a socket 110 on the upper surface of one side with respect to the center, and a portion of the PCB substrate 10 is provided along the longitudinal direction of the lower body 100 from the socket 110 to one end. It can be formed to be placed.

At this time, the PCB board 10 is stably placed on the upper surface of the lower body 100 even when only a part is placed on the upper side, and the connector 12 can be firmly coupled to the socket 110, FIGS. As shown in FIG. 6, the guide groove 130 and the guide jaw 140 may be formed. The guide groove 130 is recessed downward so that the upper surface of the lower body 100 has a width corresponding to the width of the PCB substrate 10 from one end of the lower body 100 toward the point where the socket 110 is provided. can be formed according to Therefore, the user can enter the PCB board 10 along the guide groove 130 as shown in FIG. 4 so that the connector 12 is coupled to the socket 110 as shown in FIGS. 5 and 6. have. The guide jaw 140 enters along the guide groove 130 and is formed on the upper surface of the lower body 100 to cover the upper edge of the lower portion of the connector 12 of the PCB board 10 coupled to the socket 110. . For example, the guide jaw 140 may be formed along the width direction of the lower body 100 orthogonal to the guide groove 130 from both side edges of the lower body 100 as shown in FIGS. 4 to 6, , The end of the guide jaw 140 may be formed to cover a portion of the PCB substrate 10 below the connector 12 without reaching the connector 12 coupled with the socket 110. Therefore, as shown in FIG. 6 , the lower portion of the PCB substrate 10 to which the socket 100 is coupled is not lifted upward by the guide jaws 140 on both sides of the lower portion, so that the connector 12 is not lifted upwards. ) can remain stably bound to

And, as shown in FIGS. 7 and 8 , the upper surface of the lower body 100 except for the portion where the PCB substrate 10 is placed may be recessed downward to form an accommodation space. A battery 150 connected to the socket 110 and supplying power to the PCB board 100 through the connector 12 coupled to the socket 110 may be provided in the accommodation space.

The upper body 200 is provided on the upper side of the lower body 100, and may be formed in the form of a rectangular box, for example, while having the same width as the lower body 100 as shown in FIGS. 1 and 2. It may be formed shorter in length than the lower body 100. At this time, the upper body 200 is formed to have a length corresponding to the remaining portion except for the portion of the lower body 100 on which the PCB substrate 10 is placed on the upper side, so that the PCB substrate 10 is formed on the lower body 100 It is preferable to be placed on the upper surface of the soldering part 13 so that it can be checked with the naked eye.

This upper body 200 is configured to be separated from the lower body 100 and can be coupled to the upper side of the lower body 100, but is included in the lower body 100 and the upper body 200 when the separation configuration is electrically It is difficult to interconnect the operating components and there is a risk of loss and failure. As shown in FIG. 2, the lower body 100 is preferably hinged. For example, the other end of the lower body 100 and the other end of the upper body 200 adjacent thereto may be hinged.

At this time, on both sides of one end of the upper body 200, as shown in FIGS. 2 and 4, the lower end is formed to reach the lower body 100, and the central part is shaft-coupled so that the lower end can rotate outward. 270) may be provided, and a locking protrusion 271 may be formed at the lower end of the locking sphere 270 toward the inside. And on both sides of the lower body 200, as shown in FIGS. 2 and 4, the locking protrusion 271 of the locking member 270 rotated inwardly includes a locking jaw 171 formed to lock the locking member 270. ) A locking groove 170 recessed into the inside can be formed so that the lower end of the can be accommodated. Therefore, the user rotates the upper body 200 by pressing the upper end of the locking member 270 to rotate the lower end of the locking member 270 outward to release the locking protrusion 271 caught on the locking jaw 171. can make it

As shown in FIGS. 1 and 5 , the upper body 200 moves in the vertical direction, and when moving downward, the upper body 200 contacts the plurality of soldering parts 13 on the PCB board 10 placed on the upper side of the lower body 100, respectively. A probe module 210 including two probes 211 is provided, and the probe module 210 may be provided to protrude from one end of the upper body 200 . The plurality of probes 211 may be provided so as to be positioned inside the guide groove 130 adjacent to the guide jaw 140 when moving downward while forming a vertical direction, and current flows when each comes into contact with the plurality of soldering parts 13. is composed of That is, the plurality of probes 211 are connected to the battery 150 provided in the lower body 100 by wires.

This probe module 210 is configured to be moved by user's manipulation. For example, as shown in FIGS. 1 and 2 , the upper body 200 may be provided with a pusher 220 that is provided to penetrate the upper surface and can be elastically pressed, and the pusher 220 is a probe. It is configured to physically interoperate with the module 210 . Specifically, as shown in FIGS. 7 and 8 , the upper body 200 may be provided with a support plate 240 fixed to the inner lower part, and a pusher 220 is coupled to the upper surface of the support plate 240. And, one end protrudes outward of the upper body 200 and a moving plate 250 to which the probe module 210 is coupled to the protruding portion may be provided. The moving plate 250 may be elastically supported by the spring 260 provided upwardly from the support plate 240 .

Therefore, as shown in FIG. 8 , when the user presses the pusher 220 downward, the moving plate 250 integral with the pusher 220 moves toward the support plate 240, and the moving plate 250 The probe module 210 coupled to ) is also moved downward along with the moving plate 250, and the plurality of probes 221 come into contact with the corresponding soldering part 13.

As described above, the present invention applies power to the PCB substrate 10 placed on the lower body 100, and the probe module 210 provided on the upper body 200 moves downward to form a plurality of probes 211. When in contact with the corresponding soldering part 13, a closed circuit is formed in the case of a product in which the connection and soldering of the PCB board 10 and the connector 12 are normally performed, and the connection of the PCB board 10 and the connector 12 And in the case of a product that is not properly soldered, a closed circuit is not formed.

At this time, the present invention may further include a determining means for enabling a user to easily determine whether a closed circuit is formed when the plurality of probes 211 come into contact with the corresponding soldered parts 13 . As an example of the determining means, as shown in FIGS. 7 and 8 , a buzzer 160 generating a specific signal sound may be provided in the receiving space. As a specific example, when inspecting whether the soldering part 13 is defective, if the buzzer 160 sounds, the PCB board 10 to be inspected and the soldering part 13 of the connector 12 are normally connected and the soldering is properly performed. It can be determined, and if the buzzer 160 does not sound, it can be determined that the PCB board 10 to be inspected and the soldering part 13 of the connector 12 are not properly connected or the soldering is not properly performed. .

As described above, in the present invention, the user places the PCB substrate 10 to be inspected on the lower body 100 and moves the probe module 210 downward at a place where soldering defect inspection of the connector 12 is required while being carried by the user. so that the plurality of probes 211 come into contact with the soldering part 13 on the corresponding PCB board 10, so that the connector 12 is properly soldered to the PCB board 10 depending on whether a closed circuit is formed and connected It is possible to check whether or not the connector 12 of the PCB board 10 used as the TV backlight is inspected for soldering defects without space limitations.

In particular, the present invention relates to each of the circuit patterns 11 and the connector 12 connected to the circuit patterns 11 that are formed differently depending on the type of product for which the PCB substrate 10 is used (eg, an inch of an LED TV), etc. Even if the structure to which the terminals are connected is different, it is configured to determine whether the soldering part 13 is defective by allowing a closed circuit to be formed in the case of a normal product.

To this end, the lower body 100, as shown in FIGS. 1 and 9, closes circuit when a plurality of probes 211 come into contact with the corresponding soldering part 13 in a state where power is applied to the PCB board 10. A switch 120 operated by a user is provided according to the type in which the circuit pattern 11 and each terminal of the connector 12 are connected so that a can be formed. That is, the switch 120 flows a current to each soldering part 13 through each probe 211 so that a closed circuit is formed in the case of a normal product when the plurality of probes 211 come into contact with the corresponding soldering part 13 It plays a role in determining whether to send current or not to flow.

Accordingly, the switch 120 may be configured to be operated as On/Off. When the switch 120 is in an on state, current flows to the soldering part 13 through the probe 211 connected to the corresponding switch 120, and when the switch 120 is in an off state, the corresponding Current does not flow to the soldering part 13 through the probe 211 connected to the switch 120 . These switches 120 may be composed of a number corresponding to or less than the number of probes 211, but since a plurality of soldering parts 13 are formed on the PCB board 10, it is preferable to have a plurality of them. .

And in the upper body 200 or the lower body 100, as shown in FIGS. 10 and 11, the circuit pattern 11 formed on the PCB substrate 10 to be inspected and each terminal of the connector 12 are connected. Accordingly, a display unit 230 that informs the user whether to turn each of the plurality of switches 120 on or off may be provided. For example, the display unit 230 may be provided on one side of the upper body 100 adjacent to one side of the lower body 100 on which the switch 120 is provided. Through the present invention, when the PCB substrate 10 to be inspected is used for a LED TV backlight, the display unit 230 includes a plurality of switches 120 according to the inch of the LED TV on which the PCB substrate 10 is used. Indicates whether the inspection should be performed by turning it on or off. As an example, the display unit 230, as shown in FIG. 10, when the user wants to inspect the soldering defect of the PCB board 10 used as a backlight for a 49-inch LED TV, switch 1 On, switch 2 Off, 3 Switch No. 4, switch No. 4, and switch No. 5 On are displayed, and as shown in FIG. It can be displayed to turn on switches No. 5 to 5.

In this regard, briefly describing the circuit operation of FIG. 9, three circuit lines are connected to each switch 120, and the current drawn from the central circuit line is turned on according to the user's switch operation. It flows into the PCB board 10 through the soldering part 13 through the circuit line and supplies current to the corresponding LEDs 14, and when it is off, it flows directly to the next switch through the right circuit line. In other words, in FIG. 9 , the supply current flows in the order of the first switch → the second switch → the third switch → the fourth switch → the fifth switch, and then is supplied to the buzzer 160 from the fifth switch. The user can operate the first switch, the second switch, the third switch, and the fourth switch, respectively, so that the supply current flows through the left circuit line or the right circuit line, and the fifth switch is switched so that it always flows through the left line line. can be kept on.

As such, the present invention can form a closed circuit suitable for inspecting the PCB substrate 10 by operating the switch 120, a device for inspecting each PCB substrate 10 used for each inch of the LED TV. Since there is no need to prepare, cost reduction and inspection efficiency can be increased.

10: PCB substrate 11: circuit pattern
12: connector 13: soldering part
14 : LED
100: lower body 110: socket
120: switch 130: guide groove
140: guide jaw 150: battery
160: buzzer 170: jamming groove
171: snatch jaw
200: upper body 210: probe module
211: probe 220: pusher
230: display unit 240: support plate
250: moving plate 260: spring
270: hook 271: hook

Claims (5)

A circuit pattern 11 is formed and a connector 12 is provided so that power is applied along the circuit pattern 11, and a plurality of soldering parts 13 in which the circuit pattern 11 and each terminal of the connector 12 are connected and soldered. ) is placed on the upper side of the PCB board 10 formed at one end, and the lower body provided with the socket 110 coupled with the connector 12 to apply power to the PCB board 10 through the connector 12 ( 100);
A probe module 210 is provided on the upper side of the lower body 100 and includes a plurality of probes 211 that move up and down by a user's manipulation and contact each of the plurality of soldering parts 13 when moving downward. Including; an upper body 200;
The lower body 100 has a circuit pattern 11 and a circuit pattern 11 so that a closed circuit can be formed when a plurality of probes 211 come into contact with the corresponding soldering part 13 in a state where power is applied to the PCB board 10. A switch 120 operated by a user according to the connected type of each terminal of the connector 12 is provided, and it is possible to determine whether or not the soldering part 13 is defective according to whether or not the closed circuit is formed.
On the upper surface of the lower body 100, a guide groove 130 having a width corresponding to the width of the PCB substrate 10 is recessed from one end toward the point where the socket 110 is provided, and the guide groove 130 A guide jaw 140 covering the upper edge of the lower portion of the connector 12 of the PCB board 10 coupled to the socket 110 is formed along the ),
The upper body 200 is formed to have a length corresponding to the remaining portion except for the portion of the lower body 100 on which the PCB substrate 10 is placed on the upper side, and the PCB substrate placed on the upper side of the lower body 100 ( While the soldering part 13 of 10) can be visually confirmed,
The switch 120 is operated by on/off and is provided with a plurality of switches,
The upper body 200 or the lower body 100, according to the connection type of each terminal of the circuit pattern 11 and the connector 12, the user can decide whether to turn each of the plurality of switches 120 on or off. A soldering inspection device for a PCB connector, characterized in that the display unit 230 is provided to inform. According to claim 1,
The lower body 100 is provided with a battery 150 for supplying power and a buzzer 160 for generating a sound,
The closed circuit formed by contacting the plurality of probes 211 with the corresponding soldering part 13 is configured so that current flows through the battery 150 and the buzzer 160, and if the buzzer does not sound, the soldering part 13 A soldering inspection device for a PCB connector, characterized in that the is determined as defective. According to claim 1,
The upper body 200 is provided with a pusher 220 that is provided to penetrate the upper surface and can be elastically pressed,
The probe module 210 is moved downward when the user presses the pusher 220 so that the plurality of probes 221 come into contact with the corresponding soldering part 13. delete delete

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