JPH0534687U - Electrical connector structure - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an electrical connector structure capable of reducing the insertion force only by improving the contact portion of the terminal without being greatly restricted in manufacturing and design dimensions. To do. [Structure] A width L2 of a gap 13 between a terminal (signal terminal 11) insertion groove 9 formed inside the male connector 2 and the terminal (signal terminal 11) inserted in the insertion groove 9 A female connector 3 that contacts the terminal (signal terminal 11)
The length L1 of the smooth portion 12e in the contact portion 12a of the side terminal (signal terminal 12) was increased, and the radius of curvature of the smooth portion 12e was increased.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a board-to-board connecting two-piece connector, and more particularly to an electrical connector structure having an increased number of poles.

[0002]

[Prior Art]

 Due to the development of higher densities of semiconductors, the mounting density of the substrate to be mounted has rapidly increased. For example, in the conventional LSI package, the number of terminals was about 100, but the number of terminals increased to more than 400. As a result, the number of connecting terminals between the boards has become about 100 to 200 or more.

As shown in FIG. 5, a conventional electric connector structure 30 is composed of a male connector 31 and a female connector 32. An insulating plate portion 34 is formed inside the housing 33 of the male connector 31, and a plurality of insertion grooves 36 for inserting the signal terminals 35 are provided on the outer surface side of the insulating plate portion 34 at half pitch intervals. In addition, a taper portion 34a is provided at the end of the insulating plate portion 34 in the outer surface side direction. The tapered portion 34a is provided for guiding the mating terminal (the signal terminal 37 on the female connector 32 side). At this time, the insertion groove 36 is formed in consideration of manufacturing tolerance.

In the thus constructed male connector 31, when the terminal portion 35 a of the signal terminal 35 is inserted into the insertion groove 36 of the housing 33, the end portion 36 a of the insertion groove 36 and the signal terminal 35 are separated from each other. A gap 38 is created.

Further, the female connector 32 is formed by forming a plurality of insertion grooves 40 inside the housing 39 at a predetermined pitch interval and inserting the signal terminals 37 into the insertion grooves 40.

The signal terminal 37 includes a contact portion 37a, a press-fitting support portion 37b, and a leg portion 37c. The contact portion 37a is formed by bending in a side surface C shape, and a steady contact b is formed in the center thereof. Is equipped with.

In the conventional electric connector structure 30 configured as described above, the male connector 31 and the female connector 32 are fitted to each other, so that the female connector 32 is attached to the terminal portion 35 a of the signal terminal 35 of the male connector 31. The steady contact b on the contact portion 37a of the signal terminal 37 comes into contact and becomes conductive.

[0008]

[Problems to be solved by the device]

 However, in the above-mentioned conventional electrical connector structure 30, when the male connector 31 and the female connector 32 are fitted to each other and the signal terminals 35 and 37 come into contact with each other, the male connector 31 is inserted inside the male connector 31 as shown in FIG. Since the contact portion 37a bent and formed in the side C shape of the signal terminal 37 of the female connector 32 is fitted into the clearance gap 38 formed between the end portion 36a of the certain insertion groove 36 and the signal terminal 35. In addition, the contact portion 37a of the signal terminal 37 has to be detached from the gap 38 and brought into contact with the contact portion 37a, so that the insertion force F must be increased. That is, (a) of FIG. 7 is a diagram showing the relationship between the insertion force F and the insertion stroke S of the conventional electric connector structure 30, and the point c is the signal terminal 37 of the female connector 32 and the tapered portion 34a of the male connector 31. The insertion force F when reaching the top of is shown. A point d indicates the insertion force F when the contact portion 37a of the signal terminal 37 in the female connector 32 is fitted into the gap 38 of the male connector 31. Further, point e shows the insertion force F when the contact portion 37a of the signal terminal 37 is separated from the gap 38. A point f indicates the insertion force F when the steady contact b of the signal terminal 37 of the female connector 32 comes into contact with the terminal portion 35a of the signal terminal 35 of the male connector 31, that is, when the steady contact is started.

The present invention has been made in view of the above problems, and an object thereof is to improve a contact portion of a terminal without being greatly restricted in manufacturing and design dimensions. Another object of the present invention is to provide an electrical connector structure that can reduce the insertion force.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention forms a contact portion of a terminal of one electrical connector with a curved portion having a steady contact and a smooth portion in front of the steady contact, and the smooth portion is provided to the other electrical connector. It is characterized in that it has a size capable of overcoming a gap between a terminal insertion groove formed inside and a terminal inserted in the insertion groove.

[0011]

[Action]

 With this configuration, simply by improving the contact part of the signal terminal, the female connector side signal terminal is prevented from being caught in the gap of the male connector without changing the processing man-hour, and the male connector and the female connector are fitted together. It is possible to reduce the insertion force generated when

[0012]

【Example】

 Hereinafter, an electrical connector structure of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of an electric connector structure of the present invention.

The electrical connector structure 1 is composed of a male connector 2 which is the other straight dip type connector and a female connector 3 which is one right angle dip type connector.

The male connector 2 has a housing 4 as shown in FIG. 2, and this housing 4 is a cube having a flat rectangular shape and is made of synthetic resin. A fitting portion 5 is formed inside the housing 4, and an insulating plate portion 6 is provided in two rows in the fitting portion 5 with its base fixed to the bottom plate portion 7.

A large number of insertion grooves 8 for the power supply terminals 10 are formed at a predetermined pitch on the inner surface side of the insulating plate portion 6, and an insertion groove 9 for the signal terminals 11 is formed on the outer surface side of the insulating plate portion 6. Are formed at half pitch intervals. Further, a taper portion 6a is provided on the upper end portion of the insulating plate portion 6 in the outer surface side direction of the insulating plate portion 6 for guiding the mating terminal (the signal terminal 12 on the female connector 3 side).

The press-fitting portion 11 b of the signal terminal 11 is press-fitted into the bottom plate portion 7 in the housing 4 of the male connector 2, and the terminal portion 11 a of the signal terminal 11 is fitted into the insertion groove 9. At this time, since the insertion groove 9 is formed in consideration of manufacturing tolerance, a gap 13 may be formed between the signal terminal 11 and the end 9a of the insertion groove 9.

The female connector 3 includes a housing 14, and a plate-shaped locator 15 is formed in the housing 14. An insulating plate portion 16 is formed in the center of the housing 14, and a plurality of insertion grooves 18 for the power supply terminals 17 are formed on one surface side of the insulating plate portion 16 at a predetermined pitch. On the inner surface side of the housing 14, a large number of insertion grooves 19 for the signal terminals 12 are formed at half pitch intervals.

The signal terminal 12 includes a contact portion 12a, a press-fitting support portion 12b, and a leg portion 12c. The contact portion 12a includes a curved portion 12f having a steady contact point a and a smooth portion 12e in front of the steady contact point a. The radius of curvature of the smooth portion 12e is larger than that of the curved portion 12f. The length L1 of the smooth portion 12e is larger than the width L2 of the gap 13 formed in the insulating plate portion 6 of the male connector 2.

The power supply terminal 17 is provided in the terminal through hole 14a of the power supply terminal 17 of the housing 14, and the signal terminal 12 is provided in the terminal through hole 14b of the signal terminal 12, respectively. 17 is inserted in the insertion groove 18. The leg portion of the power supply terminal 17 is bent at a right angle in the middle portion thereof, and the end portion thereof is inserted into the locking hole 15 a of the locator 15.

The contact portion 12 a of the signal terminal 12 is inserted in the insertion groove 19, and the tip of the contact portion 12 a is hooked on the hook portion 19 a provided on the front side of the insertion groove 19. The leg portion 12c of the signal terminal 12 is bent at a right angle at its intermediate portion, and its end portion is inserted into the locking hole 15a of the locator 15.

By mating the male connector 2 and the female connector 3 configured as described above, the power supply terminals 10 and 17 and the signal terminals 11 and 12 come into contact with each other and become conductive.

The terminal operation when the signal terminal 11 of the female connector 3 contacts the signal terminal 11 of the male connector 2 will be described with reference to FIG.

When the female connector 3 is fitted to the male connector 2, the smooth portion 12e in the contact portion 12a of the signal terminal 12 of the female connector 3 slides on the tapered portion 6a of the male connector 2 to thereby cause the signal terminal The smooth portion 12e of 12 crosses over the gap 13 of the male connector 2, and the steady contact point a of the signal terminal 12 comes into contact with the terminal portion 11a of the signal terminal 11 set in the male connector 2. At this time, since the length L1 of the smooth portion 12e in the contact portion 12a of the female connector 3 is larger than the width L2 of the gap 13, the contact portion 12a of the signal terminal 12 is not caught in the gap 13 of the male connector 2. Therefore, the insertion force is minimal.

The relationship between the insertion force F and the insertion stroke S of the electric connector structure of the present invention is shown in FIG.

A point h indicates the insertion force F when the signal terminal 12 of the female connector 3 reaches the apex A of the tapered portion 6 a of the male connector 2. Point i shows the insertion force F when the tip of the smooth portion 12e of the signal terminal 12 is floating above the gap 13 and the other end of the smooth portion 12e is hung on the taper portion 6a. . A point j indicates the insertion force F when the smooth portion 12e is bridged between the taper portion 6a and the terminal portion 11a of the signal terminal 11 (see (b) in FIG. 4). A point k indicates the insertion force F when the steady contact a of the signal terminal 12 comes into contact with the terminal portion 26a of the signal terminal 11 of the male connector 2, that is, when the steady contact is started (see (c) of FIG. 4). .

Comparing (b) and (a) of FIG. 7 described above, the difference in the insertion force F becomes clear.

That is, both the points h and c have the same insertion force F, but at the positions of the points i and d, the contact portion 37a of the signal terminal 37 is fitted into the gap 38 at the point d. Since the insertion force F is temporarily reduced due to this, the other end of the smooth portion 12e of the signal terminal 12 is hung on the taper portion 6a at the point i, and the tip portion of the smooth portion 12e. Becomes floating above the gap 13, and the insertion force F is slightly reduced. Next, at the position of the point j and the point e, at the point j, since the smooth portion 12e is in the horizontal state between the tapered portion 6a and the terminal portion 11a of the signal terminal 11, the insertion force is increased. The smooth portion 12e slides smoothly without raising F. This means that the length L1 of the smooth portion 12e of the signal terminal 12 is larger than the width L2 of the gap 13, so that the gap 13 is overcome without fitting into the gap 13. On the other hand, at the point e, the contact portion 37a of the signal terminal 37, which is fitted in the gap 38, tries to separate from the gap 38, so that a considerable insertion force F must be applied. Further, at the positions of the point k and the point f, both indicate that the steady contact is started.

The electrical connector structure 1 of the present invention configured as described above has a radius of curvature larger than that of the curved portion 12f, and is between the upper end portion 9a of the insertion groove 9 of the male connector 2 and the signal terminal 11. Since the smooth portion 12e, which is longer than the width L2 of the certain gap 13, is provided in the contact portion 12a of the signal terminal 12, only by improving the contact portion 12a of the signal terminal 12, there is no need to change the processing man-hours. The insertion force F 1 when the female connector 3 and the female connector 3 are fitted can be reduced. The smooth portion 12e on the contact portion 12a of the signal terminal 12 may be linear.

[0029]

[Effect of the device]

 In the electrical connector structure of the present invention configured as described above, the contact portion of the terminal of one electrical connector is formed by the curved portion having the steady contact and the smooth portion in front of the steady contact, and the smooth portion is The size is set so that the gap between the terminal insertion groove formed inside the other electrical connector and the terminal inserted in this insertion groove can be overcome, so it is necessary to improve the processing simply by improving the contact portion of the signal terminal. It is possible to prevent the female connector side signal terminal from being caught in the gap of the male connector without changing the number of steps, and it is possible to reduce the insertion force generated when the male connector and the female connector are fitted to each other.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electric connector structure of the present invention.

FIG. 2 is a cross-sectional view of a male connector.

FIG. 3 is a view showing terminals used in the electric connector structure of the present invention. (A) It is a front view which shows a signal terminal. (B) It is a side view of a signal terminal.

FIG. 4 is an explanatory view showing a terminal contact operation of the electric connector structure of the present invention. (A) It is a figure which shows the state which the contact part of a signal terminal slid on a taper part. (B) It is a figure which shows the state in which the contact part of a signal terminal straddles a gap. (C) It is a diagram showing that the signal terminals are in constant contact with each other.

FIG. 5 is a vertical sectional view of a conventional electric connector structure.

FIG. 6 is an explanatory diagram showing a terminal contact operation of a conventional electric connector structure. (A) It is a figure which shows the state which the contact part of a signal terminal slid on a taper part. (B) It is a figure which shows the state in which the contact part of a signal terminal was fitted in the clearance gap. (C) It is a figure which shows that the signal terminals made steady contact.

FIG. 7 is a diagram showing a relationship between an insertion force and an insertion stroke of the electric connector structure. (A) It is a diagram regarding a conventional electric connector structure. (B) It is a diagram regarding the electric connector structure of this invention.

[Explanation of symbols]

 1 Electrical Connector Structure 2 Male Connector (Other Electrical Connector) 3 Female Connector (One Electrical Connector) 9 Insertion Groove 11 Terminal (Signal Terminal) 12 Terminal (Signal Terminal) 12a Contact Part 12e Smooth Part 12f Curved Part 13 Gap L1 Smooth part length L2 Gap width a Steady contact

Claims (1)

[Scope of utility model registration request] 1. A contact portion of a terminal of one electric connector,
It is formed by a curved portion having a steady contact and a smooth portion in front of the steady contact. An electrical connector structure characterized by having a size capable of overcoming a gap between them.