JPH0211752Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to an improvement of a connector for connecting printed circuit boards.

(Prior Art) In general, when configuring various electrical devices and devices, printed circuit boards that integrate multiple wiring lines are often used. Attach the socket, attach the plug to the other printed circuit board,
A printed circuit board connection connector is used that allows electrical connection by connecting this plug to a socket.

By the way, this type of printed circuit board connector has a socket a and a plug b as shown in Fig. 3.
When the plug b is connected to the socket a, the flat tongue d of the plug b inserted through the opening c of the socket a is connected to the socket a.
The socket a is placed in the terminal surface part e'... of a large number of plug terminals e arranged in parallel at predetermined intervals on both the upper and lower surfaces in the longitudinal direction of the flat tongue part d (in the drawing, the upper and lower surfaces in the depth direction). The contact portions f' of the large number of socket terminals f on the sides are pressed into contact with each other to be electrically connected. However, in the case of such a connector, as the number of socket terminals f increases, the upper and lower walls g and h of the socket a move upward and downward in the center of the opening c due to the reaction force of the contact section f'. There is a problem in that there is a large deflection as if opening, and depending on the degree of this deflection, a contact failure may occur between the terminal surface portion e' located in the center and the contact portion f'. Moreover, socket a
Since the body is generally made of synthetic resin, there is a problem in that the above-mentioned opening becomes more noticeable due to deterioration over time, further worsening the poor contact condition.

Therefore, in order to solve this problem, plug b
An annular fitting wall is integrally formed that surrounds the outer surface of the body of socket a from the upper, lower, left, and right sides of the body of socket a, and the inner surface of this fitting wall is brought into contact with the upper, lower, left, and right outer surfaces of the body of socket b. It is possible to consider something that prevents the mouth from opening in the center. However, this method requires a large amount of materials, leading to a significant increase in cost.Moreover, the body of the plug becomes large, making it difficult to cope with the miniaturization of electrical equipment, and depending on the installation space of the electrical equipment. It may be impossible to equip it.

(Purpose of the invention) The present invention was made in view of the above circumstances, and its purpose is to effectively prevent the mouth from opening at the center of the opening into which the flat tongue of the socket plug is inserted. To provide a connector for connecting a printed circuit board that can be used without increasing the amount of materials or increasing the size.

(Means for Solving the Problem) In order to achieve the above object, the connector for connecting printed circuit boards of the present invention has an inset in the body of the socket extending rearward from the front surface of the body on the upper and lower walls in the longitudinal direction. A plurality of grooves are formed in the front surface of the body of the plug, and the plugs are inserted into the upper and lower fitting grooves of the socket from the front side of the socket body, respectively, to clamp the longitudinal side of the socket body from the top and bottom. A fitting protrusion is formed.

(Example) Hereinafter, an example of the present invention will be described based on the drawings of FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a socket, into which a large number of electrically conductive socket terminals 3 are inserted from the rear of a cubic body 2 made of synthetic resin. The socket terminals 3 are inserted into the body 2' at once by punching and bending a single electrically conductive metal plate, with the drawn-out parts 3b connected to each other. After being installed in the body 2, the respective drawer portions 3b... are disconnected from each other. The body 2 has a rectangular opening 4 formed in its front face extending rearward over almost the entire length in the longitudinal direction, and a socket communicating with the opening 4 above and below the rear wall surface 5 of the body 2. Terminal insertion hole 6
are formed at equal intervals in the longitudinal direction.

Further, in the upper and lower walls 7 and 8 of the body 2, a large number of fitting grooves 9 extending from the front to the rear are formed at equal intervals in the longitudinal direction, and from the center to the rear of each fitting groove 9... It communicates with the socket terminal insertion passage 6' of the body 2. Furthermore, socket 2
Engagement recesses 12, 12 are provided on both side walls 10, 11 of
is formed.

The socket terminal 3 has one end bent inward in a curved shape to form a contact part 3a with spring properties, and has a pull-out part 3b extending from the other end, and a fitting piece part in the center. 3c is formed with a locking piece portion 3d cut and raised toward the insertion groove 9 side.

Then, to attach the socket terminals 3 to the body 2, insert the insertion pieces 3c of the plurality of upper and lower socket terminals 3 into the socket terminal insertion holes 6 separately.
This is done by pushing the socket terminal 3 into the socket terminal insertion path 6' and locking the locking piece 3d of the socket terminal 3 into the rear surface 9a of the insertion groove 9 with the elasticity of the material. The contact portions 3a of the socket terminals 3 are arranged above and below within the body 2, and the lead-out portions 3d of the socket terminals 3 are extended from the rear wall portion 5 of the body 2 to the outside.

In the figure, reference numeral 20 denotes a plug, which is attached to the socket 1 on the front side of a synthetic resin body 21 having an approximately cubic shape.
A flat tongue portion 23 is integrally formed to protrude and be inserted through the opening 4 and placed inside the body 2, and extends in the same direction as the flat tongue portion 23 on both side walls 24, 24 of the body 21. The locking claws 25a, 25a formed on the inner surface of the distal ends of the engaging arms 25, 25 are formed on the front side cross sections 12a, 12a of the engaging recesses 12, 12 of the socket 2. I'm trying to lock it in place. Further, a large number of plug terminal insertion holes 26 are formed from the rear to the front of the body 21, extending vertically and longitudinally.
Terminal surface portions 21 of a large number of plug terminals 22...
a... are inserted from the rear of the plug terminal insertion hole 26 upward and downward separately and arranged in a large number of insertion grooves 23a... formed on the upper and lower plate surfaces in the longitudinal direction of the flat tongue portion 23, and in this state, the terminal surface portion 22a is flush with the plate surface of the flat tongue portion 23, and cut and raised locking pieces 2 are formed on both sides of the center portion of the terminal surface portion 22a.
7 and 27 are engaged with the front surface of a partition wall 28 that partitions the plug terminal insertion holes 26, and the terminal 22 is attached thereto in a manner that it cannot be removed. The upper and lower plug terminals 22 are also formed by punching and bending a single electrically conductive metal plate, and the terminals are inserted all at once with the drawn-out portions 22b connected to each other. Hole 26
After being inserted into and attached to each drawer portion 22b...
are disconnected from each other. Further, on the front surface of the body 21, the longitudinal side of the body 2 of the socket 1 is fitted from the front side of the body 2 of the socket 1 from the top and bottom into a large number of fitting grooves 9 on the top and bottom of the socket 1, respectively. The fitting protrusions 33 are formed to be held in place, and the fitting protrusions 33 are flush with the walls of the upper and lower walls 7 and 8 of the body 2 of the socket 1 when inserted into the fitting grooves 9. It is set to look like this.

With the above configuration, the contact portions 3c of the socket terminals 3 arranged in large numbers in the longitudinal direction within the body 2 of the socket 1 can be inserted through the opening 4 of the socket 1, as shown in FIG. The terminal surface portions 23a of the flat tongue portion 23 of the plug 20 are pressed against each other, so that the reaction force of each contact portion 3c opens the center portions of the upper and lower walls 7, 8 of the socket 1. In this case, a large number of fitting grooves 9 are formed in the longitudinal direction of the upper and lower walls 7 and 8 of the socket 1, and each fitting groove 9 has a fitting groove formed at the top and bottom of the front surface of the body 21 of the plug 20, respectively. Since the protrusions 33 are fitted in such a way as to sandwich the upper and lower walls 7 and 8 from above and below, opening at the center of the upper and lower walls 7 and 8 is prevented, and the contact portion 3c at the center is prevented from opening. Terminal surface 22a
It is possible to eliminate poor contact with the parts.

Furthermore, the fitting grooves 9 are notched from the front to the rear of the body 2, while the fitting protrusions 33...
are formed on the front surface of the body 21 of the plug 20 and fitted into the fitting grooves 9, so the material of the fitting protrusions 33 is offset by the fitting grooves 9, and the material does not increase. , it is possible to effectively prevent an increase in costs, and the fitting protrusions 33, . . .
By fitting into the fitting grooves 9..., enlargement can be effectively prevented.

Furthermore, if the fitting grooves 9 are made to communicate with the terminal insertion passage 6' of the body 2 as in the above embodiment,
Since the rear surface of this fitting groove 9 can be used as a locking surface when the socket terminal 3 is installed in the body 2 in a manner that prevents it from coming out, a locking piece for locking the socket terminal is specially formed in the body 2. You don't have to do it,
This has the advantage of preventing troublesome manufacturing and complicating the structure of the socket body.

Note that, unlike the connector of the above embodiment, the terminal surface portion 22a of the plug terminal 22 is disposed on only one longitudinal side of the flat tongue portion 23, and the contact portion 3a of the socket terminal 3 that is pressed against this terminal surface portion 22a is attached to the body 2.
The present invention may be applied to a connector configured to be placed either above or below.

(Effects of the invention) As is clear from the description of the embodiments above, in the connector for connecting printed circuit boards of the invention, the contact portions of the socket terminals arranged in large numbers in the longitudinal direction within the body of the socket are connected to the flat plate of the plug. Even if the tongue is pressed against each terminal surface and the reaction force of each contact portion acts to open the center of the upper and lower walls of the socket, the fit formed at the top and bottom of the front surface of the plug body The opening at the center of the upper and lower walls of the socket is effective because the protrusion fits into the insertion groove formed in the longitudinal direction of the upper and lower walls of the socket and clamps the upper and lower walls of the socket from above and below. This effectively eliminates poor contact between the contact portion of the socket terminal and the terminal surface portion of the plug terminal at the center.

Moreover, the fitting protrusion is formed on the front surface of the body of the plug, and is fitted from the front side into the fitting groove formed in the upper and lower walls of the socket.
The body of the plug does not increase in size, and furthermore, the material of the fitting protrusion is offset by the fitting groove, and the material does not increase, which effectively prevents an increase in cost, which is an extremely useful effect. .

[Brief explanation of the drawing]

1 and 2 show one embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is a vertical cross-sectional view, and FIG. 3 is a vertical cross-sectional view of a conventional example. 1...Socket, 2...Socket body, 3
...Socket terminal, 3a...Contact part of socket terminal, 3b...Insertion piece part of socket terminal, 3d...
Locking piece of socket terminal, 4...opening, 6'...
Socket terminal insertion passage, 7, 8... Upper and lower wall portions of socket body, 9... Fitting groove, 20... Plug, 21... Plug body, 22... Plug terminal, 22a... Plug terminal Terminal surface part, 23...
... Flat tongue, 33... Insertion projection.

Claims (1)

[Claims for Utility Model Registration] (1) A plug in which terminal surfaces of a large number of plug terminals are arranged in parallel at predetermined intervals on a longitudinal plate surface of a flat tongue protruding from the front side of a body; The flat tongue portion of this plug is inserted through an opening formed in the front face of the body and placed inside the body, and the contact portions of a large number of socket terminals arranged in the longitudinal direction inside the body are respectively inserted into the flat tongue portion. A connector for connecting a printed circuit board, which is provided with a socket for electrical connection by press-contacting each terminal surface of the socket, wherein the body of the socket has a fitting groove extending rearward from the front surface of the body on the upper and lower walls in the longitudinal direction. At the same time, a plurality of fittings are formed on the front surface of the body of the plug, and the fittings are fitted into the fitting grooves at the top and bottom of the socket from the front side of the socket body, respectively, to clamp the longitudinal side of the socket body from the top and bottom. A connector for connecting printed circuit boards characterized by forming a protrusion. (2) The insertion groove communicates with the socket terminal insertion passage in the body of the socket, and the insertion piece of the socket terminal that is inserted into the socket terminal insertion passage from the rear of the socket body has a groove on the insertion groove side. A protruding cut-and-raised locking piece is formed, and the locking piece is locked to the rear surface of the insertion groove by inserting the insertion piece into the socket terminal insertion passage of the body of the socket. A connector for connecting a printed circuit board according to claim 1 of the utility model registration claim.