KR20000050278A - Relay socket for PCB - Google Patents

Abstract

The present invention relates to a relay socket for a printed circuit board, in order to replace the relay without the process of melting or soldering the solder when replacing the relay, the present invention is a relay socket for a printed circuit board mounted on a printed circuit board mounted with a relay A socket body having an upper surface and a lower surface, on which the relay is mounted; And a plurality of socket pins installed in the socket body and electrically connecting the external leads of the relay mounted on the upper surface of the socket body to the printed circuit board, wherein the socket pins are external leads of the relay. Is formed with a pin hole that can be inserted, the pin body is fixed to the inside of the socket body through the upper surface of the socket body, integrally with the pin body protrudes to the lower surface of the socket body the pin Provided is a relay socket for a printed circuit board comprising a pin connection portion for connecting an external lead of the relay inserted into the body to the printed circuit board.

Description

Relay socket for printed circuit board

The present invention relates to a relay socket for a printed circuit board, and more particularly to a relay socket for a printed circuit board that can be easily mounted and detached to the printed circuit board.

Equipment for performing electrical die sorting (EDS) on wafers manufactured by semiconductor manufacturing processes, in particular, a tester head of a tester includes various printed circuit boards (PCBs). In case of failure of the printed circuit boards, repair work on the printed circuit boards is performed. In this printed circuit board, the internal circuit of the PSR (Pin Select Relay) board installed in the tester head is designed with high precision, and various components are precisely mounted accordingly. If the SU-112SD, SUT-2A12N type relay is defective, melt the soldered part on the external lead of the defective relay, separate the defective relay from the PSR board, and replace the new relay. It is soldered and mounted on the PSR board.

1 is a cross-sectional view showing a state in which a relay according to the prior art is mounted on a printed circuit board. Referring to FIG. 1, the relay 10 includes a relay body 12 and a plurality of external leads 14 connected to the printed circuit board 20 protruding downward from the bottom surface of the relay body 12. Has a structure. The relay 10 having such a structure has an external lead protruding into the mounting hole 24 on the other side after inserting the external lead 14 of the relay into the mounting hole 24 on one side of the printed circuit board 20. The portion 14 is soldered to the solder 30 to mount the relay 10 on the printed circuit board 20.

On the other hand, if the relay mounted as described above fails to be replaced with a new relay, as described above, after the solder is melted by applying heat to the soldered portion, the failed relay is separated from the printed circuit board, and the new relay is removed. It is mounted on a printed circuit board. Of course, soldering mounts new relays to the printed circuit board.

As described above, when replacing a defective relay, the solder is melted or soldered by repeatedly applying heat to the soldered portion, and thus, a long time to replace the relay and repeatedly heat the printed circuit board. As a result, thermal stress may damage the printed circuit board or damage other components around the relay to be replaced.

Accordingly, an object of the present invention is to provide a relay socket for a printed circuit board which can easily perform a replacement operation of the relay.

Another object of the present invention is to provide a relay socket for a printed circuit board which can eliminate a process of melting or soldering a solder when replacing a relay.

1 is a cross-sectional view showing a state in which a relay according to the prior art is mounted on a printed circuit board,

2 is a perspective view showing a relay socket for a printed circuit board according to an embodiment of the present invention;

3 is a perspective view illustrating a state in which a relay is mounted on a printed circuit board by the relay socket for the printed circuit board of FIG. 2;

4 is a cross-sectional view taken along line 4-4 of FIG. 3;

5 is a perspective view illustrating a relay socket for a printed circuit board into which two paired relays may be inserted according to another embodiment of the present invention;

6 is a cross-sectional view illustrating a state in which two relays coupled to a printed circuit board are mounted by the relay socket for the printed circuit board of FIG. 5.

Description of the main parts of the drawing

10, 10a, 10b: relay 12: relay body

14: external lead 40, 70: relay socket

42, 72: socket body 46, 76: socket pin

50, 80: printed circuit board 60, 90: solder

In order to achieve the above object, the present invention is a relay socket for a printed circuit board mounted on a printed circuit board by mounting a relay, the socket body having an upper surface and a lower surface, the relay is mounted on the upper surface; And a plurality of socket pins installed in the socket body and electrically connecting the external leads of the relay mounted on the upper surface of the socket body to the printed circuit board, wherein the socket pins are external leads of the relay. Is formed with a pin hole that can be inserted, the pin body is fixed to the inside of the socket body through the upper surface of the socket body, integrally with the pin body protrudes to the lower surface of the socket body the pin Provided is a relay socket for a printed circuit board comprising a pin connection portion for connecting an external lead of the relay inserted into the body to the printed circuit board.

The depth of the pinhole of the socket pin according to the invention is preferably formed at least deeper than the length of the outer lead of the relay.

In addition, the length of the pin connecting portion protruding to the lower surface of the socket body is preferably formed to be longer than at least the thickness of the printed circuit board.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

2 is a perspective view illustrating a relay socket for a printed circuit board according to an exemplary embodiment of the present invention. 3 is a perspective view illustrating a state in which a relay is mounted on a printed circuit board by the relay socket for the printed circuit board of FIG. 2. 4 is a cross-sectional view taken along line 4-4 of FIG. 3.

2 to 4, a relay socket 40 (hereinafter, referred to as a “relay socket”) for a printed circuit board includes a socket body 42 and a plurality of socket pins 46 installed on the socket body 42. The relay 10 is connected to the printed circuit board 50 through the relay socket 40.

The socket body 42 is a portion in which the relay 10 is mounted, and has a rectangular parallelepiped shape having an upper surface and a lower surface, and the upper surface is manufactured to have an area corresponding to the width of the lower surface of the relay body 12. In the socket body 42, a through hole 48 is formed at a position that can be inserted into the external lead 14 of the relay, that is, a position where the socket pin 46 can be installed. Typically, the SUT-2A12N type relay has three external leads formed at three edges on one side of the bottom surface of the relay body and four external leads on the other side of the relay body, and the SU-112SD type relay has both sides of the bottom surface of the relay body. Since three external leads are formed at the edges, the embodiment of the present invention provides four through holes 48 at both edges of the socket body 42 so that relays of this type can be selectively mounted. Formed. In Fig. 2, the socket pin 46 is provided in each of the three through holes 48 on each side so that the SU-112SD type relay 10 can be mounted. Reference numeral 44 designates a through hole without a socket pin installed.

The socket pin 46 is provided in the through hole 48 of the socket body 42 to electrically connect the external lead 14 of the relay mounted on the upper surface of the socket body 42 to the printed circuit board 50. As a means, it is inserted and installed through the through-hole 48 of the upper surface of the socket body 42. The socket pin 46 has a pin hole 43 into which the external lead 14 of the relay can be inserted, and is fixedly installed in the socket body 42 through an upper surface of the socket body 42. The pin body 41 and the external lead 14 of the relay inserted into the pin body 41 to protrude to the lower surface of the socket body 42 integrally with the pin body 41 are connected to the printed circuit board 50. The pin connection part 45 is comprised. The outer diameter of the pin connection portion 46 is designed to be smaller than the outer diameter of the pin body 41. On the other hand, the socket pin 46 is brass as the base material so that the electrical conductivity is minimized by the mechanical contact with the external lead 14 of the relay connected to increase the electrical conductivity, the surface of the socket pin is gold ( Au) is plated.

On the other hand, the thickness of the socket body 42 is formed at least thicker than the length of the pin body 41 of the socket pin so that the pin body 41 can be installed inside the socket body 42. The depth of the pin hole 43 is formed at least longer than the length of the outer lead 14 of the relay so that the outer lead 14 of the relay can be fully inserted into the pin hole 43. The inner diameter of the pin hole 43 is formed to correspond to the outer diameter of the outer lead 14 so that the inner surface of the pin hole 43 and the outer surface of the outer lead 14 can be brought into close contact with each other. And, the socket body so that the pin connecting portion 45 protruding to the lower surface of the socket body 42 can protrude to the lower surface of the printed circuit board 50 through the mounting hole 54 of the printed circuit board 50. The length of the pin connecting portion 45 protruding to the lower surface of the 42 is longer than the thickness of the printed circuit board 50.

A double step is formed inside the through hole 48 so that the socket pin 46 can be stably installed in the through hole 48 of the socket body, and the upper end of the pin body 41 is the socket body 42. An annular jaw 47 is formed on the stepped surface 48c formed in the through hole 43 adjacent to the upper surface of the upper surface of the pin body 41 so as to catch the upper end of the pin body 41. That is, the through hole 48 has a depth corresponding to the length of the jaw 47 of the pin body at the upper surface of the socket body 42 so that the jaw 47 of the pin body can be inserted into the first hole 48a. ) Is formed, and a second hole 48b into which the pin body 41 can be inserted is formed inside the first hole 48a. A third hole penetrating the lower surface of the socket body 42 is formed so that the pin connecting portion 45 can protrude from the inside of the second hole 48b to the lower surface of the socket body 42. . At this time, the jaw 47 of the socket body is caught by the stepped surface 48c of the first hole 48a and the second hole 48b, and the pin body 41 is placed on the stepped surface of the second hole 48b and the third hole. ) And the outer circumferential surface between the pin connecting portion 45 is caught and the socket pin 46 is stably installed in the socket body 46.

Although not shown, by fastening an elastic body such as rubber to the outer circumferential surface of the pin body of the socket pin, the operation of mounting and detaching the socket pin to the socket body can be easily performed.

A method of mounting the relay 10 on the printed circuit board 50 using the relay socket 40 having the above structure will be described with reference to FIGS. 3 and 4. First, the mounting formed on the printed circuit board 50 will be described. The pin connecting portion 45 of the relay socket is inserted into the hole 54, and the end of the pin connecting portion 45 protruding from the lower surface of the printed circuit board 50 is soldered with solder 60 to print the printed circuit board 50. The relay socket 40 is connected to and fixed to it. Next, the outer lead 14 of the relay may be inserted into the pin hole 43 of the relay socket so that the lower surface of the relay body 12 may be in close contact with the upper surface of the socket body 42.

Although not shown, circuit wirings connecting the relay 10 mounted on the printed circuit board 50 and the components on the printed circuit board 50 are also formed on the upper and lower surfaces of the printed circuit board 50. The circuit wiring is also connected to the mounting hole 54. Of course, the circuit wiring may be formed inside the printed circuit board 50.

In addition, when there is a relay in which a failure has occurred, it is only necessary to pull out the relay in which the failure occurs from the relay socket without soldering work as in the prior art. Then, a new relay may be mounted in the relay socket.

The relay socket 40 according to an embodiment of the present invention has a structure in which only one relay 10 may be mounted, but a relay socket 40 may be manufactured to simultaneously mount two or more relays.

5 is a perspective view illustrating a relay socket for a printed circuit board into which two paired relays may be inserted according to another embodiment of the present invention. 6 is a cross-sectional view illustrating a state in which two relays coupled to a printed circuit board are mounted by the relay socket for the printed circuit board of FIG. 5.

5 and 6, the relay socket 70 includes a socket body 72 capable of mounting two relays 10a and 10b, and a plurality of socket pins 76 installed on the socket body 72. Consists of, the groove 79 is formed in the center portion of the upper surface of the socket body 72 to distinguish the mounted portion of the relay (10a, 10b). On the other hand, it can be seen that each unit relay socket around the groove 79 has the same structure as the relay socket according to an embodiment of the present invention described above.

Such a relay socket 70 is a PSR of the tester head of the tester of the TACT 7162 model of Asia (ASIA), for example, when two relays 10a and 10b are adjacently installed on the printed circuit board 80. Relay socket that can be applied to the SU-112SD and SUT-2A12N type relays mounted on the board. In the figure of FIG. 5, a relay 10a of the SU-112SD type is mounted on the right side of the upper surface of the socket body 72, and a relay 10b of the SUT-2A12N type is mounted on the left side.

6 shows a state in which two relays 10a and 10b are connected to the printed circuit board 80 by a relay socket 70. Of course, the socket pin 76 of the relay socket is soldered and connected to the printed circuit board 80 by solder 90, and the replacement of the relay separates only the relay mounted on the upper surface of the relay socket and mounts a new relay. Just do it.

Therefore, according to the structure of the present invention, since the relay is mounted in the relay socket connected and fixed to the printed circuit board by soldering, or the relay mounted in the relay socket is detached without soldering, the mounting and detaching of the relay can be performed quickly. You can simply proceed.

Claims (3)

A relay socket for a printed circuit board mounted on a printed circuit board equipped with a relay. A socket body having an upper surface and a lower surface, on which the relay is mounted; And And a plurality of socket pins installed on the socket body and electrically connecting the external leads of the relay mounted on the upper surface of the socket body to the printed circuit board. The socket pin is, A pin body in which a pin hole into which an external lead of the relay can be inserted is formed, and fixedly installed in the socket body through an upper surface of the socket body; And a pin connecting portion protruding to a lower surface of the socket body integrally with the pin body to connect an external lead of the relay inserted into the pin body to the printed circuit board. The relay socket of claim 1, wherein a depth of the pin hole is at least deeper than a length of an external lead of the relay. The relay socket of claim 1, wherein a length of the pin connecting portion protruding from the bottom surface of the socket body is longer than at least the thickness of the printed circuit board.