JP2589514Y2 - connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting a flexible flat cable to a fork-shaped terminal, and more particularly, to a pressing slide member attached to the connector for pressing the flat cable to the terminal. Is to be prevented from occurring.

[0002]

2. Description of the Related Art A flat electric wire in which conductors are flexibly arranged side by side at required intervals on an insulating sheet such as an FPC (flexible printed circuit) or a ribbon electric wire of this kind.
The connector for connecting the flat cable (hereinafter, referred to as a flat cable) and the fork-shaped terminal has the configuration shown in FIG. That is, fork-shaped terminals 3 are inserted into a large number of terminal receiving holes 2 juxtaposed in the insulating housing 1 through respective one end openings 2a, while each of the terminal receiving holes 2 is inserted.
The flexible flat cable 4 and the slide member 5 are inserted through the other end opening 2b formed by communicating with the fork-shaped terminal 3 and the pressing portion 5b protruding from one side of the substrate portion 5a of the slide member 5 is connected to the fork-shaped terminal 3. The conductor of the flat cable 4 is inserted between the contact piece 3a and the press-fitting piece 3b and pressed against the contact piece 3a.

[0003] As described above, the slide member 5 is mounted on the surface of the insulating housing 1 opposite to the terminal insertion side along the longitudinal direction in which the terminal receiving holes 2 are juxtaposed. The holding portions 5c and 5c for fixing to both ends of the housing are formed in a protruding shape.

[0004]

In the above-mentioned connector, the number of terminal receiving holes 2 juxtaposed in the housing 1 increases with the increase in the number of poles, and the length of the slide member 1 increases accordingly. There is a need. When the slide member 5 is lengthened, a problem arises in that, as shown in FIGS. 7A and 7B, warping occurs in a portion of the pressing portion 5a which protrudes the thin plate between the protruding portions 5c on both sides. .

[0005] Since the contact between the conductor of the flat cable 4 and the terminal 3 is ensured by the pressing portion 5a of the slide member 5, if the pressing portion 5a warps as described above,
The contact pressure varies, and some of the conductors may not come into contact with the terminals, resulting in a decrease in the reliability of the connector.

Further, the slide member 5 is provided by integrally molding an insulating resin with a mold, and is extruded from the molding mold using an ejector pin after the molding is completed. The parts to be applied to the ejector pins are usually
Although it is also necessary for c and 5c, when the ejector pin is pushed out, burr B is generated at the extruded portion, and the burr B protrudes from the surface, causing looseness without contacting the contact surface with the housing 1 Becomes In addition, the backlash may affect the connection between the conductor and the terminal by the pressing portion. The burrs B can be removed by polishing, but in that case, there is a problem that the number of processing steps increases and the cost increases.

[0007] The present invention has been made in view of the above-described problems, and is intended to prevent the slide member from warping.
It is an object of the present invention to stably secure the connection between the conductor of the flat cable and the fork-shaped terminal by the pressing portion. Another object of the present invention is to enable the slide member to be attached to the housing without polishing without causing burrs generated when the ejector pin is pushed out.

[0008]

In order to achieve the above object, the present invention is to insert a fork-shaped terminal into each of a plurality of terminal receiving holes juxtaposed in an insulating housing through one end opening of each terminal. A connector in which a flexible flat cable and a slide member are inserted from the other end opening formed by communicating the receiving holes, and the flat cable is pressed against a terminal by a pressing portion protruding from a substrate portion of the slide member. In the above, the elongated substrate portion attached along the longitudinal direction in which the terminal receiving holes are juxtaposed to the insulating housing is provided with a hollow portion for preventing the pressing portion from warping. Is provided.

At both ends in the longitudinal direction of the board portion of the slide member, holding portions are provided which are engaged with fixing portions formed on both sides in the longitudinal direction of the insulating housing, and both ends of the board portion provided with the holding portions are provided. The above-mentioned lightening portions are formed on the bottom of
It is preferable that a lightening portion is also formed on the bottom surface of the central portion where the pressing portion is protruded, and that the lightening portion is preferably provided at a position symmetrical with respect to the longitudinal center of the slide member.

[0010] The slide member has a concave stepped portion at which the ejector pins of the holding portions at both ends to be engaged with the fixed portion of the insulating housing are attached so that burrs generated during extrusion do not protrude to the surface. Provided.

[0011]

As described above, by forming the lightening portion in the substrate portion of the slide member, it is possible to prevent the pressing portion from warping even if the sliding member is elongated, and to keep the pressing portion in a linear state. As a result, the contact pressure between the flat cable and the terminal can be maintained uniformly in the longitudinal direction, and the connection reliability of the connector can be improved.

[0012] Further, since a concave step is formed in the extruded portion of the molding die by the ejector pin,
Even if burrs are generated, they do not protrude from the surface, and the slide member can be attached to the housing without rattling without removing the burrs.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. FIGS. 1A, 1B, and 1C show a slide member 10 which is formed by integrally molding a glass fiber reinforced insulating resin with a mold 20 as shown in FIG. 1A. I have. The mold 20 includes a pair of molds 20A and 20B. The mold 20A has three protrusions 21 (13a, 13b, and 13c) formed on the bottom surface of the substrate 11 of the slide member 10 at three locations. 21a, 21b, 21c) are provided.

The slide member 10 molded by the mold 20 has a holding portion 14 projecting from the front surface of both ends 11a in the longitudinal direction of the long substrate portion 11, and both ends 11a.
A thin plate-like pressing portion 15 is provided to protrude forward from the upper portion of the intermediate portion 11b.

At both ends 11a of the substrate portion 11, the lightening portions 13a and 13b each formed of a circular hole from the bottom surface are formed. At the center of the intermediate portion 11b, a circular hole is formed from the bottom surface. The lightening portion 13c is formed.
Although the diameters of the three lightening portions are the same, the depth of the lightening portions 13a and 13b on both sides is set to be larger than the depth of the central lightening portion 13b.

The thickness of the lightening portion is not limited to the number and the position of the hole in the above embodiment, but is preferably formed symmetrically with respect to the center in the longitudinal direction of the slide member. Accordingly, it is designed at a position where warpage does not occur in the intermediate portion.

Both ends 11 of the substrate portion of the slide member 10
The height H1 of b is set to be the same as the height H2 of the insulating housing 30 shown in FIG. 2, and when attached to the insulating housing 30, cut off at both ends in the length direction of the insulating housing 30 as shown in FIG. It is set so as to fit into the missing fitting portion 31. On the other hand, the board intermediate portion 11b is mounted below the upper wall projection 39 of the insulating housing 30 with a flat cable insertion space S left therebetween.

As shown in FIG. 4, a pair of upper and lower holding pieces 32 formed at both ends in the longitudinal direction of the insulating housing 30 are provided on the holding portion 14 protruding from both end portions 11b of the substrate portion of the slide member.
a, a temporary locking protrusion 33a, which is inserted between the mounting portions 32 sandwiched between the a and 32b, and a temporary locking groove 14a and a full locking groove 14b formed on the inner surface side of the holding portion protrude from the insulating housing 30; The slide member 10 is locked to the stop projection 33b so as to be attached to the insulating housing 30 at the temporary locking position and the full locking position.

On the bottom surface on the tip side of the both-side holding portion 14,
An ejector pin (not shown) is pressed against the mold when it is pushed out of the molding die 20, and a stepped portion 17 which is concavely cut out is provided in this portion.

The pressing portion 15 of the slide member 10 has an upper surface 15a protruding in the same plane as the upper surface of the substrate intermediate portion 11b, and is inclined downward at a distal end portion 15b. Thereby, the flat cable 50 is pushed up and pressed against the contact piece 41.

In order to arrange the terminal receiving holes 35 in the insulating housing 30 in the length direction, a vertical partition 36 is provided on the side of the terminal insertion opening 30a, and a horizontal direction is provided inside each terminal receiving hole 35. Press-fit piece fixing wall 3
7 are provided. As shown in FIG. 5, the partition walls 36 and 37 extend almost to the center of the terminal receiving hole 35 and are not provided in the flat cable on the opposite side and the opening 30b on the slide member insertion side. 10 can be inserted.

The connector is assembled in the order shown in FIG. 5. First, as shown in FIG. 5A, first, the terminal 40 is inserted into each terminal receiving hole 35 of the insulating housing 30.
Insert Next, the slide member 10 is temporarily locked to the insulating housing. This temporary locking locks the holding portion 14 of the slide member 10 with the temporary locking groove 14b on the temporary locking projection 33a of the insulating housing 30 and causes the tip of the holding portion 14 to abut on the full locking projection 33b. . In this temporarily locked state, the flat cable 50 is inserted along the upper surface of the pressing portion 15 of the slide member 10 between the contact piece 41 and the press-fitting piece 42 of the terminal 40 located inside the insulating housing 30.

Next, as shown in FIG. 4B, the slide member 10 is pushed down to the final locking position. With this push,
The upper surface 15a of the pressing portion of the slide member 10 comes to a position facing the tip contact portion 41a of the contact piece 41, and presses each conductor 51 of the flat cable 50 to the contact portion 41a.

As described above, since the lightening portion 13 is formed at a required position in the length direction of the substrate portion 11 of the slide member 10, the pressing portion 15 does not warp in the longitudinal direction. Therefore, the pressing force of the pressing portion 15 is uniformly applied in the length direction at the pressure contact portion between the conductor 51 of the flat cable and the contact portion 41a of the terminal 40. Therefore, the connection is reliably made in all the connection portions extending in the length direction, and the occurrence of a connection failure in a part can be prevented.

Further, even if burrs are generated on the step portion 17 of the holding portion 14 of the slide member 10 by extrusion with an ejector pin for extrusion, the burrs do not project from the step portion 17. When inserted into the mounting portion 32, no backlash occurs due to burrs, and the locking can be performed in a close contact state.

[0026]

As is apparent from the above description, in the connector according to the present invention, since the long slide member is formed with a hollow portion, it is possible to prevent the occurrence of warpage and to push the slide member. Pressure can be uniformly applied to the contact portion between the flat cable and the terminal, and the reliability of the connector can be improved.

Further, it is not necessary to remove burrs generated when the slide member is pushed out of the molding die, and the slide member can be attached to the insulating housing without looseness.

[Brief description of the drawings]

FIG. 1 shows a sliding member of a connector according to the present invention, wherein (A) is a rear view, (B) is a bottom view, and (C) is a side view.

FIG. 2 is an exploded perspective view of the connector according to the present invention.

FIG. 3 is a perspective view showing a state where the connector of FIG. 2 is assembled.

FIGS. 4A and 4B are cross-sectional views showing an engagement state between a housing and a slide member.

FIGS. 5A and 5B are cross-sectional views showing an assembling process.

FIG. 6 is a sectional view showing a conventional example.

FIGS. 7A and 7B are front views showing a conventional problem that occurs in a slide member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Slide member 11 Substrate part 13 (13a, 13b, 13c) Lightening part 14 Holding part 15 Pressing part 17 Step part 20 Die 30 Insulating housing 32 Mounting part 35 Terminal receiving hole 40 Fork-shaped terminal 41 Contact piece 42 Press-fit piece 50 Flat cable 51 conductor

Claims (2)

(57) [Scope of request for utility model registration] 1. A fork-shaped terminal is inserted into each of a plurality of terminal receiving holes arranged in parallel with an insulating housing through one end opening thereof, and is more flexible than another end opening formed by connecting the terminal receiving holes. A connector in which a cable and a slide member are inserted and a flat cable is pressed against a terminal by a pressing portion projecting from a substrate of the slide member, wherein the slide member has a terminal receiving hole arranged in parallel with an insulating housing. A connector provided in the elongated board portion attached along a longitudinal direction of the connector, the hollow portion for preventing the pressing portion from warping. 2. The slide member is provided with a concave step at a portion where an ejector pin is attached when the slide member is extruded from a molding die, such that burrs generated during extrusion do not project on the surface. The connector according to 1.