JPH06308156A - Pin socket for contact probe - Google Patents

Abstract

PURPOSE:To provide a pin socket for a pin probe by which wiring work can be easily performed without skills for a short time, which can be fitted on a pin board without any difficulty, and by which the disconnection of a conductive wire due to fatigue can be prevented. CONSTITUTION:In a pin socket 30, which can be fitted by inserting it into a pin board and is electrically connected with a pin type contact probe 11 simultaneously when the probe 11 to be used for wiring continuity test of a printed board is inserted, is provided with a tubular socket body having a conductive wire. One end opening part of the body is for a fitting port for the probe 11, while the other end part thereof is a part 32 which is to be caulked so that the body may be electrically connected with the conductive wire by caulking the other end part when the end of a covered peeled-off conductive wire 22 is inserted into the other end part, and one end part of the socket body is provided with a tying piece 37 which ties the body to the board 10 when the socket body is inserted into the specified position of an insertion hole 21 of the board 10 from the one end side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin socket of a contact probe used for inspecting wiring continuity of a printed circuit board.

[0002]

2. Description of the Related Art Various manufacturing processes are provided in the manufacture of printed circuit boards. One of these inspection processes is a wiring continuity inspection of a conductor pattern (hereinafter referred to as a wiring pattern) on a printed circuit board and a through hole. With the progress of electronics and miniaturization of equipment, high density mounting of electronic components on current printed circuit boards has led to finer wiring patterns and higher density. Therefore, if the wiring continuity inspection of the printed circuit board was conducted by a human method,
This type of inspection is generally automated by a wiring continuity inspection device because it wastes time and labor.

FIG. 1 shows a wiring continuity inspection device 1 for a printed circuit board 12. The wiring continuity inspection device 1 includes an inspection table 13 having a mounting surface for a printed circuit board 12. The inspection table 13 can be moved up and down by a press mechanism 14, and the press mechanism 14 is electrically connected to a controller 15, and its operation can be controlled by the controller 15.

On the other hand, above the inspection table 13, a base board 10 parallel to the printed board mounting surface of the inspection table 13, that is, a pin board 10 is positioned. On the pin board 10, a plurality of conductive contact probes 11 are projected downward.
These contact probes 11 are mounted on tubular pin sockets 16 having conductivity, which are previously inserted into the pin board 10. The pin sockets 16 are arranged in high density corresponding to the wiring pattern of the printed board 12. Each contact probe 11 is electrically connected to the controller 15 via each pin socket 16.

Therefore, according to this wiring continuity inspection apparatus 1, the printed circuit board 12 placed on the inspection table 13 is
The pressing mechanism 14 is actuated to move upward, and the wiring pattern surface 12 a thereof comes into contact with the contact probe 11. At this time, the controller 15 controls each contact probe 11
Conducting a continuity inspection between the two, and comparing it with the wiring pattern data of the non-defective printed circuit board 12 stored in the controller 15 in advance to judge whether or not the connection relationship of the wiring patterns is coincident with each other. Determine whether.

By the way, the pin socket 16 is shown in FIG.
As shown in FIG. 3, both ends are opened, and a flange-shaped stopper portion 17 is provided at the one end opening portion. The other end opening is a conductive wire connection portion 18 having a diameter smaller than the main body diameter of the pin socket 16. Between both ends of the pin socket 16, a holding portion 19 and two narrowed portions 20 are provided in order from one end side. On the other hand, the pin board 10 is provided with a plurality of insertion holes 21 penetrating therethrough. This pin socket 16 is pressed into the insertion hole 21 by hammering in from above as seen in FIG. 2 until the stopper portion 17 of the pin socket 16 contacts the upper surface 10a of the pin board 10. After that, the end (core wire portion) 22a of the conductive wire 22 from the controller is inserted into the conductive wire connecting portion 18 and soldered. In FIG. 2, 23 is a soldering iron, 2
4 indicates solder.

[0007]

However, the press-fitting of the pin socket by hammering it into the pin board may cause damage to the pin socket itself. Further, since the number of pin sockets attached to the pin board is large and the distance between the pins is narrow, it is extremely difficult to perform soldering work after attaching the pin sockets to the pin board. Moreover, the soldering work is
Unless a skilled worker spends a lot of time on the work, it is not preferable in terms of work. Furthermore, when soldering only the core of the conductive wire, if the core is a single wire,
If the core wire is damaged, there is a problem that the conductive wire is broken due to fatigue.

Therefore, the present invention has been made in consideration of the above-mentioned circumstances, and the purpose thereof is not to require skill, wiring work can be performed in a short time and easily, and it can be easily attached to a pin board. Another object of the present invention is to provide a pin socket for a contact probe, which can prevent disconnection of a conductive wire due to fatigue.

[0009]

According to the present invention, a pin-shaped contact probe that can be inserted into and mounted on a base board and is used for wiring continuity inspection of a printed circuit board is mounted, and at the same time, the contact probe and electrical In the pin socket to be electrically connected, the pin socket of the contact probe of the present invention includes a tubular socket body having conductivity, and one end opening of the socket body serves as a mounting port for the contact probe, while When the end of the conductive wire with the coating peeled off at the end is inserted, the other end is caulked to make an electrical connection between the socket body and the conductive wire. A locking piece that locks the socket body to the base board when the socket body is inserted from one end side into the insertion hole of the base board to a predetermined position. It is provided.

[0010]

According to the pin socket of the contact probe described above, before inserting the pin socket into the base board,
By inserting the end of the conductive wire into the portion to be caulked and caulking the portion to be caulked, the socket body is electrically connected. After this, when the socket body is inserted into the insertion hole of the base board from one end side, the locking piece hooks the socket body on the base board. Then, the contact probe is mounted from the opening at one end of the socket body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described in detail below with reference to FIGS. The same members as those of the conventional example are designated by the same reference numerals. The inspection of the conductor pattern (hereinafter referred to as a wiring pattern) of the printed board 12 is the same as the wiring continuity inspection device 1 described in the conventional example.
The wiring continuity inspection device 1 includes a pin board 10, a pin socket 16, and a contact probe 11.

On the other hand, as in the conventional example, the pinboard 10 is provided with a plurality of insertion holes 21 penetrating therethrough so as to open to the upper and lower surfaces thereof. (See Figure 2). The upper surface of the pin board 10 is the surface on the side where the contact probe 11 is inserted. FIG. 3 shows the entire pin socket 30 of the first embodiment. The pin socket 30 has a tubular shape by bending a metal plate. This pin socket 30
Both ends are open, one end opening is a locking portion 31, and the other end is a caulking planned portion 32. Locking part 3
Between the 1 and the planned caulking portion 32, 2 from the locking portion side in order.
The narrowed portion 20 and the stopper portion 34 are provided at the respective locations. The planned caulking portion 32 has the same diameter as the main body diameter of the pin socket 30.

According to FIG. 4, the engaging portion 31 is provided with three cut cracks 36 extending in the longitudinal direction from the opening edge toward the other end. The opening edge is provided with a plurality of locking pieces 37 that are bent outward in the radial direction at a right angle. These locking pieces 37 are separated from each other in the circumferential direction of the opening edge. As shown in FIG. 5, the conductive line 22 from the controller 15 is connected to the caulking planned portion 32. In the portion to be caulked 32, the conductive wire 22 is inserted into not only the end where the coating is peeled off, that is, the core wire portion 22a, but also the portion where the coating is left, and the crimping tool or the like is provided from the outside of the portion to be caulked 32. By applying pressure with the part to be caulked 32
By forming the small diameter portion 35 by crimping the conductive wire 22
The core wire portion 22a is pressed and fixed together with the covering portion. Therefore, an electrical connection is made between the conductive wire 22 and the pin socket 30. Therefore, when the conductive wire 22 is a single wire, even if the core wire portion is damaged, the conductive wire 22 can be reliably connected without breaking due to fatigue.

Next, after the conductive wire 22 is caulked to the caulking portion 32, the pin socket 30 is inserted into the insertion hole 21 of the pin board 10 from the lower surface side. Specifically, as shown in FIG. 6, the pin socket 30 has the locking portion 31 elastically reduced in diameter, and the pin board 10
Is inserted into the insertion hole 21 from the lower surface side. When the locking piece 37 of the locking portion 31 protrudes to the upper surface side of the pin board 10, the locking portion 31 returns to its original state due to its restoring force, and each locking piece 37.
Is hooked on one opening edge of the insertion hole 21 to lock the pin socket 30. Further, when the pin socket 30 is locked, as shown in FIG. 3, the stopper 34 of the pin socket 30 comes into contact with the opening edge of the other end of the insertion hole 21, and the pin socket 30 is securely inserted into the insertion hole 21 of the pin board 10. Will be held in. Therefore, this pin socket 30
Can be easily inserted into the insertion hole 21 of the pin board 10 without having to be hammered in and press-fitted.
It can be held just by inserting it. Therefore, damage such as bending of the pin socket 30 during insertion can be prevented.

After that, the contact probe 11 is inserted into the locking portion 31 of the pin socket 30 opened on the upper surface of the pin board 10 (FIGS. 6 and 7). This contact probe 11 has a spring 38 as shown in FIG.
And a rod 40 that can be expanded and contracted (usually in an extended state). An inspection needle 41 is provided at the tip of the rod 40. This inspection needle 41
Touches the wiring pattern surface 12a of the printed circuit board 12. And this contact probe 1
1 is inserted into the pin socket 30 until it abuts on the small diameter portion 35, and is held by the two narrowed portions 20. That is, these narrowed portions 20 prevent the contact probe 11 from coming off.

FIG. 8 shows the pin socket 3 of the second embodiment.
A 0'lock 31 'is shown. This locking part 31 '
Is provided with a pair of lances, that is, locking pieces 37 ′ on the outer peripheral surface of the pin socket 30.
7'is in a positional relationship in which they face each other. Also,
These locking pieces 37 'are obtained by cutting out the peripheral wall of the pin socket 30' in a U-shape and lifting the remaining pieces diagonally. Usually, these locking pieces 37 'are elastically kept in an inclined state. On the other hand, as shown in FIG. 9, the pinboard 10 'of the second embodiment has an insertion hole 2 on its upper surface.
A counterbore 42 is provided in the opening 1 '. And
The locking portion 31 'of the pin socket 30' is the pinboard 1
When it is inserted into the 0'insertion hole 21 'from the lower surface side, the engaging piece 37' of the engaging portion 31 'is biased by the inner wall of the insert hole 21' while being engaged with the counterbore 42. Is inserted up to. When the locking portion 31 ′ comes to the position of the spot facing 42, the urging of the locking pieces 37 ′ is released, and each locking piece 37 ′ returns to its original state. Therefore, the pin socket 30 'is held in the insertion hole 21' of the pin board 10 ', as in the first embodiment. The portion to be caulked (not shown) of the pin socket 30 ′ is similar to that of the first embodiment, and the pin socket 30 ′ of the second embodiment has the same effect as that of the first embodiment. Play.

The engaging portion 31 of the pin socket 30 of the first embodiment is provided with three cut cracks 36 and engaging pieces 37 of different sizes on one opening edge (FIG. 4).
As shown in FIG. 10, there are four cuts 4 in the locking portion 43.
4 are provided and the cuts 44 are symmetrically arranged, and the locking pieces 4
The size of 5 may be made uniform, and not only the above-mentioned locking portions 31, 31 ′ and 43, but the number of cracks and locking pieces may be increased or decreased.

Further, the above-mentioned pin sockets 30, 30 '.
Is a metal plate bent into a tubular shape, but is not limited to this, and may be a simple metal pipe.

[0019]

As described above, according to the present invention, a pin-shaped contact probe which can be inserted into a base board and attached and which is used for wiring continuity inspection of a printed circuit board is mounted, and at the same time, the contact probe is mounted. In the pin socket electrically connected to the pin socket of the contact probe of the present invention, a tubular socket body having conductivity is provided, and one end opening portion of the socket body serves as a mounting port for the contact probe. , When the end of the conductive wire whose coating has been peeled off is inserted into the other end, the other end is caulked to form an electrical connection between the socket body and the conductive wire, which is the caulking planned portion, The conductive wires can be easily connected, and the conductive wires can be prevented from being broken. Also, because one end of the socket body is provided with a latching piece that latches the socket body to the base board when the socket body is inserted from one end side into the insertion hole of the base board to a predetermined position, the pin socket Can be easily attached to the base board, and the pin socket can be prevented from being damaged because it is not pressed in by hammering. Furthermore, after connecting the conductive wire to the other end of the pin socket, the pin socket can be inserted into the base board, so that a connection failure can be prevented and the assembling work can be performed in a short time and easily. Play.

[Brief description of drawings]

FIG. 1 is a schematic view of a wiring continuity inspection device.

FIG. 2 is a side view of a conventional pin socket.

FIG. 3 is a side view of the pin socket of the first embodiment, a part of which is broken away.

FIG. 4 is an enlarged perspective view of IV in FIG.

5 is an enlarged cross-sectional view of V in FIG.

FIG. 6 is a side view of a pin socket inserted into a pin board.

FIG. 7 is a cross-sectional view of a contact probe.

FIG. 8 is a perspective view of a locking portion of the second embodiment.

FIG. 9 is a sectional view of the pin socket of the second embodiment inserted in the pin board.

FIG. 10 is a perspective view of a locking portion of the third embodiment.

[Explanation of symbols]

 1 Wiring Continuity Inspection Device 10 Pin Board 11 Contact Probe 12 Printed Circuit Board 13 Inspection Table 14 Press Mechanism 15 Controller 16 Pin Socket (Conventional Example) 20 Drawing Portion 21 Insertion Hole 22 Conductive Wire 22a Core Wire Portion 30 Pin Socket 31 Locking Portion 32 Caulking Scheduled portion 34 Stopper 35 Small end portion 36,44 Cut crack 37,37 ', 45 Locking piece

Claims (1)

[Claims] 1. A pin socket that can be inserted into a base board and attached, and at the same time that a pin-shaped contact probe used for wiring continuity inspection of a printed circuit board is mounted and is electrically connected to this contact probe. , A tubular socket body having electrical conductivity is provided, and one end opening of this socket body is used as a mounting port for the contact probe, while the other end is inserted when the end of the stripped conductive wire is inserted. The part to be caulked is designed to make an electrical connection between the socket body and the conductive wire.At one end of the socket body, the socket body goes from the one end side to the predetermined position in the insertion hole of the base board. A pin socket for a contact probe, which is provided with a latching piece for latching the socket body to the base board when inserted.