JPS607032Y2 - electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an electrical connection device, particularly an electrical connection device used to connect a flexible printed circuit board and a lead wire.

FIG. 7 shows one type of conventional electrical connection device of this type. Bolt holes 33 are drilled in the wiring circuit board 31, and bolts 34 are inserted into the bolt holes 33.
A flat washer 36 and a terminal 37 are fastened to the bolt 34 through a nut 35, and a lead 32 is soldered to the terminal 37 to establish an electrical connection.

38 is a set plate.

However, in such an electrical connection device, the circuit surface of the printed circuit board 31 is easily damaged by the edges of the flat washer 36, and the assembly process is complicated and the work efficiency is significantly reduced. If the bolt 34 or nut 35 is inadvertently brought into contact with another conductive member,
When the printed wiring circuit board 31 is damaged and it is to be replaced with a new printed wiring circuit board 31, there is a drawback that the replacement work becomes extremely difficult.

Such a tendency is particularly noticeable when a large number of lead wires 32 are connected to the printed wiring circuit board 31.

The object of this invention is to provide an electrical connection device that can eliminate the drawbacks of the conventional devices as described above.

The present invention will be explained in detail below based on the embodiments shown in FIGS. 1 to 6.

The electrical connection device 1 of this invention has a socket body 7, a terminal 12 housed in the socket body 7, and a board 3 that supports the socket body 7 and has a flexible printed circuit board 2 attached thereto. First, the structure of the terminal 12 will be explained based on FIG. 6.

The expanded shape of this terminal 12 is formed by punching into a substantially ten shape as shown in the opening of FIG.
4, a square through hole 18 is bored in the center, and a locking claw piece 22 is formed on one side of the through hole 18.

The conductive pieces 13 and the contact pieces 14 are bent approximately at right angles to the base 19 to form a pair of conductive pieces 13 facing each other, and are further formed into a pair of wing-shaped contact pieces 14.

(See Figure 6A) Reference numeral 16 is a protruding piece formed near the base of both conductive pieces 13, but one of these protruding pieces 16 is formed short in length to prevent reverse insertion. .

Next, referring to the socket body 7 in which the terminal 12 is to be accommodated, the socket body 7 is a cylindrical body made of an insulating material and has a square hole 20 formed in the center. A cutout 11 is formed so as not to disturb the wing-shaped contact piece 14 of the terminal 12, and a notch 11 is formed in the inner bottom wall surface 24 of the square hole 20, and is inserted into the through hole 18 of the terminal 12 and engaged with the locking claw piece 22. Furthermore, the elastic locking hook 21 is made to have elasticity, and furthermore, when the elastic locking hook 21 and the locking claw piece 22 are released from locking, an elastic locking hook 21 is formed. A through hole 23 for inserting a tool is provided adjacent to the elastic locking hook 21.

9 is a projection protruding from the outside of the opening edge of the cylindrical body 8;
15 is a flange formed on the periphery of the cylindrical body 8, and 15 is a recess into which the projection 16 of the terminal 12 is engaged.

Therefore, the terminal 12 is fitted into the square hole 20 formed in the cylindrical body 8, and the cylindrical body 8 is elastically locked to the locking claw piece 22 formed on one side edge of the through hole 18 of the terminal 12. Hook 2
1 is elastically locked to form the socket body 7.

Reference numeral 3 denotes a substrate having a through hole 4 into which the socket main body 7 is inserted, and notches 5 formed at two locations in the diametrical direction of the circumferential edge of the through hole 4 through which the protrusion 9 of the cylindrical body 8 can pass.
A flexible printed wiring circuit board 2 is attached to the back side of the .

The structure of this embodiment has been described above. Next, to describe its operation, when connecting the socket body 7 and the board 3, first the mounting side of the printed circuit board 2 is inserted into the through hole 4 of the board 3. That is, the cylindrical body 8 (electrical contact body) having the terminal 12 attached thereto is inserted from the back side, and the protrusion 9 thereof is made to protrude to the front surface of the board 3 through the notch 5 .

As a result, the flange 10 of the cylindrical body 8 is brought into contact with the back side of the board 3, and the printed circuit board 2 is held between the flange 10 and the board 3, and the contact piece 1 of the terminal 12 is held between the flange 10 and the board 3.
4 is brought into electrical contact with the circuit section of the printed circuit board 2.

Next, when the cylindrical body 8 is rotated in this state, the protrusion 9 and the edge of the through hole 4 engage with each other, and the cylindrical body 8 is held by the substrate 3.

When the pin terminal 6 fixed to the frame 17 is inserted into the socket main body 7 held on the board 3 in this way, the pin terminal 6 is electrically connected to the printed wiring circuit board via the terminal 12. It is something that

If you want to remove the terminal 12 from the socket body 7, after removing the socket body 7 from the board 3, insert a tool such as a screwdriver into the through hole 23 and engage the locking claw piece 22 with the elastic locking hook 21. By removing the terminal 12 from the socket body 7, the terminal 12 can be removed from the socket body 7.

In the above embodiment, the socket main body 7 is an embodiment in which the flexible printed circuit board 2 and the pin terminal 6 are connected, but the present invention is not limited to this, and the socket body 7 is a so-called rigid printed circuit board with a printed circuit printed on the back side. Needless to say, it can also be used to connect with and pin terminals.

As described above, the present invention is inserted into the through hole 4 provided in the electrically insulating board 3, and the printed circuit board 2 is placed on one side of the insulating board and the printed circuit board 2 is placed on the other side. This is an electrical connector for connecting a terminal 6 of an electrical device, and has a cylindrical socket body 7 that is open at one end and has a bottom wall 24 at the other end, and that is fitted into the through hole, and a socket inside the socket body 7. A terminal 12 which is accommodated and is bent so that a contact piece 14 and a conductive piece 13 which contact the printed circuit board and the terminals of the electrical equipment from the flat base 19 extend toward the open end of the socket body; This is an electrical connector consisting of a locking claw piece 22 formed on the base 19 of the terminal 12 and an elastic locking hook 21 that is integrally provided on the bottom wall of the socket body and engages with the locking claw piece 22. Therefore, the present invention has the following effects.

This invention allows for easy attachment and detachment of terminals to the socket body with one touch, and has good workability.

Also, since the terminal and the socket body use a locking mechanism, the assembly can be done in a timely manner and can be securely locked.

Therefore, productivity can be improved and maintainability is also extremely good.

By adjusting the dimensions of the elastic locking hook 21, appropriate locking strength can be obtained, and performance in this respect can also be improved.

If a malfunction occurs due to the terminal, the terminal can be replaced and re-installed in the same socket body for reuse, so it is economical because there is no need to replace the terminal and socket body as a set like in conventional socket assemblies. .

[Brief explanation of the drawing]

1 to 6 each show an embodiment of the electrical connection device according to the present invention, FIG. 1 is a perspective view thereof, FIG. 2 is a front view of only the electrical contact, and FIG. 3 is an A- 4 is a sectional view taken along the line B-B, FIG. 5 is a sectional view showing when the electrical contact body and pin terminal are engaged, and FIG. 6 is a perspective view of A and the town terminal only. Its developed plan view, FIG. 7, is a sectional view showing a conventional electrical connection device. DESCRIPTION OF SYMBOLS 1...Electrical connection device, 2...Flexible printed circuit board, 3...Insulating substrate, 4...Through hole, 5... ...Notch, 6...
...Zen terminal, 7...Socket body, 8...
... Cylindrical body, 9 ... Protrusion, 10 ...
・Flange, 11...Notch, 12...
Terminal, 13...Conductor piece, 14...Contact piece, 15...Recess, 16...Protrusion piece, 1
7...Frame, 18...Through hole, 19
...Base, 20...Square hole, 21...
...Elastic locking hook, 22...Latching claw piece, 23.
...Through hole, 24...Inner bottom wall surface.

Claims (1)

[Scope of utility model registration request] It is inserted into a through hole 4 provided in an electrically insulating board 3, and connects the printed circuit board 2 disposed on one side of the insulating board and the terminal 6 of an electrical device disposed on the other side. This electrical connector has a cylindrical socket body 7 that is open at one end and has a bottom wall 24 at the other end and that is fitted into the opening, and a flat base that is accommodated within the socket body 7. a terminal 12 formed by bending so that a contact piece 14 and a conductive piece 13 that contact the terminals of the printed circuit board and electrical equipment extend from 19 toward the open end of the socket body;
An electrical connector comprising a locking claw piece 22 formed on the base 19 of the socket body, and an elastic locking hook 21 that is integrally provided on the bottom wall of the socket body and engages with the locking claw piece 22.