JP2814610B2 - Multi-core connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-core connector, and particularly to a male multi-core connector fixedly mounted on a board, which is removably connected from the outside. The present invention relates to a female multi-core connector.

[Conventional technology]

There are various types of multi-core connectors, one of which is mounted on the board. Among these, recently, a multi-core connector in which connection contactors are arranged in a line has been used relatively frequently.

3 to 8 show a conventional example. 4, the male connector 50 is formed in an L-shape as a whole, and a plurality of male contacts 52 are provided in a row at a rising portion 50A. The rising part of this male connector 50
The back side of 50A is fixed to a substrate 60, and the other end of each male contact 52 is connected to a predetermined printed circuit on the substrate 60.

In FIG. 4, reference numeral 70 denotes a female connector, and reference numeral 71 denotes its female contact. Also reference numeral 80
Denotes a substrate, and reference numeral 72 denotes a card such as a substrate.

At the bottom of the male connector 50 in FIG. 6, a detachable guide 50B for the female connector 70 is provided.

Female connector with multiple female contacts 52
Numeral 70 is fixed to one end of the card 72 by soldering as shown in FIG.

As the female contact 52, there is generally one shown in FIGS. 5 and 6. FIG.

Among them, the one shown in FIG. 5 has a structure in which the plug insertion port 520 is opened in a trumpet shape, and the center of the main body is constricted,
At the same time, four slits are cut along the center line from the plug insertion port 520 side. For this reason, a method of adopting a configuration using four contact springs 521 formed by four slits is adopted as a whole. Here, reference numeral 522 indicates a connection terminal portion, and reference numeral 523 indicates a fixing ring.

In the structure shown in FIG. 6, the plug insertion port 520 forms an opening of the fixing ring 526, and the opposite side of the plug insertion port 520 is tightened in a tapered shape, and at the same time, along this part along the center line. Four slits are cut, thereby forming four contact springs 527. Reference numeral 528 indicates a connection terminal portion.

When connecting the male and female multicore connectors, a relatively large insertion pressing force is required because all the contactors are connected at the same time. For this reason, conventionally, with respect to the female contactor, a method of changing the set position of the plug insertion port in the depth direction, for example, every other one has been adopted. FIG. 3 shows an example.

In FIG. 3, the U-shaped housing 50 is
FIG. 2 shows a main body portion of an L-shaped (in the same figure) male connector in the figure.

The housing 50 is composed of arms 50A, 50B provided at the upper and lower ends of FIG. 3, and a support 50C provided between the arms 50A, 50B. A plurality of female contactors 52 are embedded in the support 50C at predetermined intervals. Reference numeral 50D indicates a connection hole. Then, every other female contactor 52 has its plug insertion port L
Equipped with only a squeeze. Reference numerals 51A and 51B indicate mounting holes.

[Problems to be solved by the invention]

In the above-mentioned conventional example, for example, the one shown in FIG. 5 has a shape in which the contact spring 521 is extended toward the plug insertion port 520. For this reason, the insertion angle (contact angle: θ in FIG. 7) of the female contactor 52 into the contact spring 521 cannot be sufficiently ensured when downsizing the entire connector, and therefore, the electrical connection is stabilized. Therefore, there is a disadvantage that a high contact pressure is required, and a larger insertion pressing force is required to oppose this.

FIG. 6 shows a configuration in which the contact spring 527 is extended from the plug insertion port 520 in the plug insertion direction. For this reason, the female contactor 52 has a disadvantage that the contact point with the contact spring 521 greatly varies due to a relative displacement with the male insertion plug portion or the like. FIG. 8 shows the operation of FIG. As shown in FIG. 8, since the angle α between the contact spring 527 and the plug part P of the male contact is generally small, the contact points a,
b deviates greatly. For this reason, there is a large variation in the contact time when the plug is inserted, and a large stroke must be taken during the insertion to ensure the connection. there were.

[Object of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a multi-core connector in which the disadvantages of the conventional example are improved, and in particular, the insertion / removal force of the connector is set small and the whole connector can be miniaturized.

[Means for solving the problem]

The present invention provides a multi-core connector having a male connector provided with a plurality of male contacts on the same line and a female connector provided with a plurality of female contacts on the same line corresponding to the male connector. The female contact of the female connector is connected to a ring-shaped plug guide that forms a male plug insertion port, and the terminal side disposed at a predetermined interval with the same center line as the plug guide. A ring, a band-shaped side wall connecting the terminal side ring and the plug guide to one side surface, and bent somewhat toward the center from the plug guide to the terminal side ring along the band side wall. The contact spring is formed by a contact spring extending in this state, and a contact spring for stagger connection protruding from the terminal side ring portion toward the plug guide on the opposite side of the contact spring. Then, a configuration is adopted in which a protruding portion that protrudes in a mountain shape inward is provided at the tip end of the contact spring for stagger connection. This aims to achieve the above-mentioned object.

[Action]

Since the spring for the staggered connection is held outside by the locking piece with pretension, when the plug portion of the male contactor is inserted from the plug insertion port, the spring for the staggered connection is smoothly connected without buckling. You. Since the time difference connection spring extends from the terminal side ring located at the deep portion in the direction of the insertion opening, the plug insertion angle with respect to the connection spring can be set small, and therefore, the insertion force of the plug also increases. At this point, a small external force is sufficient. In addition, since the insertion pressure of the plug can be reduced, the degree of displacement when the insertion port of each female contact is slightly displaced in the plug insertion direction can be reduced. Therefore, the housing portion of the female connector can be reduced. It is possible to reduce the size.

(Example of the invention)

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

The embodiment shown in FIGS. 1 and 2 shows a female contact 1 provided in a female connector of a multi-core connector provided with a plurality of contacts at predetermined intervals on the same line. .

The female contact 1 is provided with a ring-shaped plug guide 2 provided with a plug insertion port 1A for inserting a plug of a male contact, and is arranged at a predetermined interval with the center line of the plug guide 2 being the same. A terminal-side ring 3 provided, a band-shaped side wall portion 4 connecting the terminal-side ring 3 and the plug guide portion 2 on one side, and a terminal-side ring from the plug guide portion 2 along the band-shaped side wall portion 4. A contact spring 5 extending in a state of being bent slightly toward the center toward the center 3, and a terminal spring 3 protruding from the terminal side ring 3 toward the plug guide 2 on the opposite side of the contact spring 5. And a contact spring 6 for staggered connection. And, this time difference connection contact spring 6
The projecting part that protrudes in the mountain shape toward the inside at the tip 6A of
6B is provided.

Among them, the contact spring 6 for stagger connection is incorporated with a predetermined initial spring force (pretension).
The tip 6A of the contact spring 6 for stagger connection is specifically held from the inside by a spring engaging piece 2A protruding from the plug guide 2 toward the terminal side ring 3.

Here, since the staggered contact spring 6 is held by the spring retaining piece 2A with pretension, a plug (not shown) having a circular or pseudo-circular cross section has been inserted from the plug insertion port 1A. At this time, it is possible to prevent buckling by interfering with the distal end portion 6A of the contact spring 6 for staggered connection, and to reduce the insertion force at the same time as being positioned outside the plug guide portion 2 on the plug insertion side. This is advantageous in reducing the insertion angle for the connection and increasing the accuracy of the contact position with the plug. Specifically, this female contact 1
It is formed based on a processed member formed by stamping a plate-shaped spring material. In this case, as shown by the line segment S in FIG.
Due to press technology, when this female contact 1 is deployed,
It is preset so that the contact spring 6 for the staggered connection is at the end.

A plurality of the female contacts 1 formed in this manner are provided in the housing with the plug insertion ports 1A of the adjacent female contacts slightly shifted in the plug insertion direction as in the case of FIG. 3 described above. Equipped. Other configurations are the same as those of the above-described conventional example.

 Next, the operation of the above embodiment will be described.

FIG. 2 shows a cross-sectional view of the female contact 1 described above with a part omitted. In this figure, symbol P indicates a plug portion of a male contact.

Due to the positional accuracy of the plug portion P on the male connector side, the contact position with the female contact 1 varies during the actual connection operation.

However, in this embodiment, when the contact start time is early, it comes into contact with the contact spring 6 at the position of symbol a in the figure, and when it is late, it comes into contact with the time difference connection contact spring 6 at the position of symbol b. It becomes possible.

In this case, the projecting portion 6B at the tip of the contact spring 6 for staggered connection is used.
Is provided near the plug guide 2,
The distance l between points a and b is set to be relatively short.
On the other hand, although the pretension of the contact spring 6 for staggered connection is set to a predetermined size for maintaining the contact pressure, the insertion force is smaller than in the conventional example because the insertion angle is small. It is set very low. In this regard, in order to set the insertion force even lower, for example, the stiffness of the contact spring 6 for stagger connection may be thinned by crushing the plate thickness. By doing so, the pulling force of the female connector can be reduced. The change in the positional relationship between the contact spring 5 of the female contact 1 and the band-shaped side wall 4 has no effect on the characteristics.

Further, in the present embodiment, the female contact 1 formed as described above can come into contact with the plug portion insertion of the male contact at two places, so that the overall Not only can the insertion pressing force be reduced, but also when the set depth of the plug insertion port shown in FIG. 3 is changed, the degree of the change can be reduced, and therefore, the female connector There is an advantage that the size of the device can be reduced.

〔The invention's effect〕

As described above, according to the present invention, a contact spring for a staggered connection that has a staggered connection material machine that sets the connection order of connectors (for example, ground → power → signal) and greatly contributes to reduction of the insertion force of the connector. Since the connector is provided close to the plug insertion side, it is possible to reduce the size of the connector. Also, the contact spring for staggered connection is temporarily held with pretension outside the ring on the plug insertion side, so the contact spring by plug insertion Can be prevented, and the insertion angle is set small, so that the insertion force can be reduced. Further, because of the above-described configuration, the female connector can be downsized. A multi-core connector can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a female contact which is a main part of one embodiment of the present invention, FIG. 2 is an operation explanatory view of FIG. 1, and FIG.
5 to 6 are explanatory diagrams showing an example of a female contact and its operation in the conventional example, and FIG. 7 is an explanatory diagram showing the operation of FIG. FIG. 8 is an explanatory diagram showing the operation of FIG. 1 ... female contact, 1A ... plug insertion port, 2 ...
Plug guide part, 3 ... terminal side ring, 4 ... strip-shaped side wall part, 5 ... contact spring, 6 ... contact spring for time difference connection, 6A ...
… Projecting part.

Claims (3)

(57) [Claims] 1. A multi-core connector comprising: a male connector provided with a plurality of male contacts on the same line; and a female connector provided with a plurality of female contacts on the same line corresponding to the male connector. In the above, the female contact of the female connector is arranged at a predetermined interval with a ring-shaped plug guide portion forming a male plug insertion port and the same center line as the plug guide portion. A terminal-side ring, a band-shaped side wall connecting the terminal-side ring and the plug guide to one side surface,
A contact spring extending along the band-shaped side wall from the plug guide toward the terminal side ring in a state of being bent slightly toward the center, and a terminal spring opposite to the contact spring. A staggered contact spring protruding from the ring portion toward the plug guide, and a protruding portion protruding inwardly in a mountain shape at an end of the staggered contact spring. A multi-core connector characterized by being provided. 2. The multi-core connector according to claim 1, wherein each of the female contacts is formed based on a member formed by stamping a single spring material. 3. The plurality of female contacts are characterized in that the plug insertion openings of the adjacent female contacts are set and installed with a relatively small angle along the plug insertion direction. Multi-core connector.