JP2018037321A - Connector housing - Google Patents

Abstract

Provided is a connector housing having a guide that can fully perform its function even if a position shift occurs at the tip of a male contact.
A connector housing of the present invention is provided with a tapered lead-in 20 for guiding a male contact 1 to a contact cavity 15 on a fitting surface 13 with a mating connector. The guide 20 has a first tapered surface 21 having a first inclination angle θ1 and a second tapered surface 25 having a second inclination angle θ2 smaller than the first inclination angle θ1. The second tapered surface 25 is provided from the first tapered surface 21 to the fitting surface 13.
[Selection] Figure 2

Description

  The present invention relates to a connector housing constituting an electrical connector.

An electrical connector (hereinafter sometimes simply referred to as a connector) is usually a male connector that holds a male contact and a female connector that holds a female contact that is electrically connected to the male contact. ing.
When performing this fitting, it is necessary to ensure that the male contact can be easily fitted to the female contact in order to ensure the reliability of the connector after completion of the fitting. For this purpose, a housing having a female connector through which a male contact is inserted is provided with a guide having a tapered shape as shown in, for example, Patent Document 1 (FIG. 3). The lead-in is provided around the insertion hole of the housing through which the male contact penetrates, and the fitting surface on the side where the male contact is inserted is tapered in the insertion direction.

JP-A-2005-203251

  However, as the electrical connector is miniaturized and densified, it is required to reduce the contact pitch, which is the distance between adjacent contacts, and it is necessary to reduce the cross-sectional dimension of the male contact. If the cross-sectional dimension is reduced, the rigidity of the male contact with respect to bending is reduced. Therefore, when an external force is applied, plastic deformation occurs, and the male contact is displaced from its original position. Depending on the degree of deformation, even if a guide is provided, the tip of the male contact is not accepted by the guide and collides with the fitting surface between the guide and the guide. Since this fitting surface is perpendicular to the insertion direction of the male contact, there is a possibility that smooth fitting between the male contact and the female contact cannot be performed.

  In view of the above, the present invention has an object to provide a connector housing having a lead-in that can sufficiently perform the function of smoothly guiding the male contact into the female contact even if a misalignment occurs at the tip of the male contact. And

The present invention is a connector housing for an electrical connector having a plurality of contact cavities for receiving male contacts of the mating electrical connector, and guides the male contacts to the contact cavity on the mating surface with the mating electrical connector. Prepare for invitation.
The guiding in the present invention includes a first tapered surface having a first inclination angle and a second tapered surface having a second inclination angle smaller than the first inclination angle, and the second taper surface is a first taper surface. It is provided from the surface to the fitting surface.

  In the connector housing according to the present invention, the second tapered surface and the first tapered surface can be formed continuously in the fitting direction with the mating electrical connector.

In the connector housing according to the present invention, when the first tapered surface is constituted by a plurality of inclined surfaces, the second tapered surface can be provided corresponding to at least one of the plurality of inclined surfaces.
Among them, in the connector housing according to the present invention, it is preferable that the first tapered surface is configured and a pair of second tapered surfaces are provided on each of the pair of inclined surfaces arranged at symmetrical positions.

  In the connector housing according to the present invention, the guide having the first tapered surface and the second tapered surface is provided corresponding to all of the plurality of contact cavities, or provided corresponding to a part of the plurality of contact cavities. Can do.

  According to this invention, it has the 1st taper surface which has a 1st inclination angle, and the 2nd taper surface which has a 2nd inclination angle smaller than a 1st inclination angle, and a 2nd taper surface is a 1st taper surface. It has a lead in provided from the surface to the mating surface. Therefore, according to the present invention, by providing the second tapered surface, the area where the male contact can be guided becomes larger than the induction of only the first tapered surface, so that the displacement of the distal end of the male contact occurs. Even so, the invitation function can be fully demonstrated. And according to the connector housing of this invention, if the area of the 2nd taper surface with a small inclination | tilt angle is made small, the easiness of the invitation by the 1st taper surface with a large inclination | tilt angle can be ensured. In other words, since the tilt angle is small and the tilt angle is small, the area of the second taper surface that is inferior in the attracting function can be minimized, so that the attracting function can be secured as a whole.

It is a perspective view which shows the connector housing which concerns on embodiment of this invention from the fitting surface side. It is the elements on larger scale of FIG. It is a cross-sectional view of the connector housing of FIG. FIG. 4 is a partially enlarged view of FIG. 3. It is a figure explaining the effect | action and effect of this embodiment, (a) shows a mode that the front-end | tip of the male contact contacted the 1st taper surface, (b) shows the front-end | tip of a male contact on the 2nd taper surface. It shows how it hits. It is the elements on larger scale of the conventional connector housing which does not have a 2nd taper surface, (a) is a figure corresponding to FIG. 2, (b) is a figure corresponding to FIG. In the conventional connector housing, (a) shows a state in which the tip of the male contact is in contact with the tapered surface, and (b) shows a state in which the tip of the male contact is in contact with the fitting surface. It is a figure which shows the modification of this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the connector housing 10 according to this embodiment holds a female contact (not shown) and a mating electrical connector (hereinafter referred to as a mating connector) that holds a male contact (not shown). The electrical connector assembly is configured by being fitted. The connector housing 10 is characterized by the structure of the lead-in 20 so that it can be smoothly drawn into the female contact even when the mating male contact is displaced when mated with the counterpart connector. Have.

Hereinafter, the configuration of the connector housing 10 will be described with reference to FIGS.
As shown in FIG. 1, the connector housing 10 includes a housing main body 11 and a fitting surface 13 disposed on one surface side of the housing main body 11. The fitting surface 13 is a flat surface except for the guiding 20 and the guiding 30.
As shown in FIG. 3, the housing body 11 has a contact cavity 15 formed therein, and the female contact is accommodated in the contact cavity 15. The contact cavity 15 has a front end opened in an insertion hole 16 that is continuous with the guides 20 and 30 formed in the fitting surface 13.
In addition, in the connector housing 10, as shown in FIG.1 and FIG.3, the side by which the fitting surface 13 is arrange | positioned is defined as the front (F), and the opposite side is defined as the back (B). Moreover, in the connector housing 10, as shown in FIG.1 and FIG.3, the fitting direction X, the width direction Y, and the height direction Z are defined.

  As shown in FIGS. 1 and 3, the connector housing 10 has a plurality of guides 20, 30 on the fitting surface 13, and the guides 20 are arranged in a lower region in the height direction Z. Are arranged in the upper region in the height direction Z. As can be easily understood from FIG. 1, the size of the lug 20 is smaller than that of the lug 30, but this is because the size of the male contact received by the lug 30 is large and the size of the male contact received by the lug 20 is small. caused by. That is, the male contact received by the lead-in 20 has lower rigidity than the male contact received by the lead-in 30, and therefore the misalignment of the male contact due to deformation due to external force is likely to occur. Therefore, in the present embodiment, a structure that takes this positional deviation into consideration is added to the guide 20.

As shown in FIG. 2 and FIG. 4, the guide 20 has a structure that is tapered and tapered from the fitting surface 13 toward the rear side where the male contact is inserted.
The guide 20 includes a first tapered surface 21 whose peripheral edge E is rectangular, and a second tapered surface 25 formed over the boundary surface 14 between the first tapered surface 21 and the fitting surface 13. The boundary surface 14 is a part of the fitting surface 13 and refers to a region between the adjacent guides 20 and 20.

  As shown in FIG. 2, the first tapered surface 21 has two same-shaped inclined surfaces 22, 22 provided facing the width direction Y with the insertion hole 16 as the center of line symmetry and the insertion hole 16 in line symmetry. And two inclined surfaces 23 and 23 having the same shape provided opposite to each other in the height direction Z. The inclined surface 22 and the inclined surface 22 are tapered, and the inclined surface 23 and the inclined surface 23 are tapered. The inclined surfaces 22 and 22 and the inclined surfaces 23 and 23 have substantially the same shape except that the second tapered surface 25 overlaps the latter.

  Both the inclined surface 22 and the inclined surface 22 have a trapezoidal planar shape. As shown in FIG. 2, the lower base L is disposed along the peripheral edge E, and the upper base U is disposed along the insertion hole 16. ing. Similarly, the inclined surface 23 and the inclined surface 23 have the same trapezoidal planar shape, the lower base L is disposed along the peripheral edge E, and the upper base U is disposed along the insertion hole 16.

Next, as shown in FIG. 2, the second tapered surface 25 includes a pair of two inclined surfaces 26, 26 having the same shape and provided in the height direction Z with the insertion hole 16 as the center of line symmetry. It is composed of The pair of inclined surfaces 26, 26 are tapered.
The inclined surfaces 26, 26 overlap with the inclined surfaces 23, 23 forming the first tapered surface 21 in plan view, and the boundary surface 14 between the guide 20 and the guide 20 adjacent to the height direction Z, that is, the fitting It is formed over the surface 13.
Since the inclined surfaces 26 and 26 are disposed in the center of the inclined surfaces 23 and 23 in the width direction Y, both sides of the inclined surface 23 sandwiching the inclined surface 26 do not overlap the inclined surface 26. With respect to the height direction Z, one end of the inclined surfaces 23, 23 reaches the vicinity of the insertion hole 16, and the other end enters the fitting surface 13 (boundary surface 14). Therefore, in the height direction Z, the second tapered surface 25 occupies the fitting surface 13 to a wider range than the first tapered surface 21. A narrow boundary surface 14 is left between the inclined surfaces 23 and 23 adjacent to each other in the height direction Z.
Moreover, the hole 28 provided between the inclined surfaces 23 and 23 adjacent to the width direction Y is a hole for inserting a female contact removal tool (not shown).

As shown in FIG. 4, the inclined surfaces 23, 23 of the first tapered surface 21 form a first inclined angle θ 1, and the inclined surfaces 26, 26 of the second tapered surface 25 form a second inclined angle θ 2. . The first tilt angle θ1 and the second tilt angle θ2 are defined as angles with respect to the fitting surface 13 as shown in FIG. The second taper surface 25 and the first taper surface 21 are continuous in the fitting direction X.
In the present embodiment, as shown in FIG. 4, the second inclination angle θ2 is set to be smaller than the first inclination angle θ1, and by adopting this setting, the second inclination angle θ2 is expanded to a range wider than the first tapered surface 21. The two tapered surfaces 25 can occupy the fitting surface 13. That is, in the connector housing 10, the area for attracting the male contact is partially expanded by providing the second tapered surface 25. Here, as shown in FIG. 4, if the dimension that the inclined surface 26 protrudes in the height direction Z from the inclined surface 23 is A, and the width of the inclined surface 26 that is not shown is B, the area that invites the male contact. Can be expanded by A × B with respect to one inclined surface 26.

  Next, the effect which the connector housing 10 provided with the above structure show | plays is demonstrated with reference to FIGS. In describing the effect of the connector housing 10, it is compared with the conventional connector housing 50 including the guide 51 shown in FIG. 6. The guide 51 is composed only of the inclined surface 22 of the first tapered surface 21 of the present embodiment, and the shape and dimensions other than the provision of the second tapered surface 25 coincide with the first tapered surface 21.

First, regarding the connector housing 10 of the present embodiment, as shown in FIG. 5A, when the male contact 1 is in contact with the inclined surface 23 in the region where the inclined surface 23 is provided, the male contact 1 is brought into contact with the inclined surface 23. After being guided, it is drawn into the insertion hole 16. The male contact 1 has a rectangular cross section, but is represented as a line segment in FIGS.
Further, as shown in FIG. 5B, the male contact 1 contacts the inclined surface 26 at a position near the upper end of the inclined surface 26. In this range, the inclined surface 23 is not provided, but the male contact 1 is guided through the inclined surface 26 and the inclined surface 23 in order, and then is guided into the insertion hole 16. Since the inclined surface 23 has a large inclination angle, the male contact 1 reaching the inclined surface 23 is smoothly drawn into the insertion hole 16. The region that is the inclined surface 26 and protrudes from the inclined surface 23 shown in FIG. 5B corresponds to the fitting surface 13 or the boundary surface 14 if the second tapered surface 25 is not formed. In other words, the connector housing 10 is provided with the second tapered surface 25, so that an area where the male contact 1 can be guided into the insertion hole 16 is increased.
In the present embodiment, the example in which the second tapered surface 25 is provided on the inclined surfaces 23, 23 of the first tapered surface 21 is that the male contact 1 is bent and easily displaced in the height direction Z. This is because it is assumed. For example, if the male contact 1 has a smaller dimension in the height direction Z, that is, a smaller thickness than the dimension in the width direction Y, the male contact 1 is likely to be displaced in the height direction Z and not easily displaced in the width direction Y.

The invitation 51 which consists only of the inclined surface 22 is demonstrated with reference to FIG.
As shown in FIG. 7A, when the male contact 1 comes into contact with the inclined surface 22, the male contact 1 is guided to the inclined surface 22 and then guided into the insertion hole 16. This is the same as the present embodiment shown in FIG.
However, as shown in FIG. 7B, when the male contact 1 is in contact with the fitting surface 13 or the boundary surface 14, the male contact 1 and the fitting surface 13 or the boundary surface 14 are orthogonal to each other. Even if 1 is pushed in strongly, it remains in contact therewith and the male contact 1 cannot be guided into the insertion hole 16.
In FIG. 7B, the absolute position where the male contact 1 contacts the boundary surface 14 is within the same range A as in this embodiment, as shown in FIG. 5B.

  As described above, the connector housing 10 according to the present embodiment has a wider range in which the male contact 1 can be guided as compared with the connector housing 50 including the leading 51 including only the conventional inclined surface 22.

  Here, if only the range in which the male contact 1 can be guided is widened, it is not necessary to have a two-step tapered shape unlike the combination of the first tapered surface 21 and the second tapered surface 25. What is necessary is just to expand the area to occupy. However, if it does so, inclination-angle (theta) n will become small.

  The male contact 1 is easier to be guided as the inclination angle of the taper surface is larger. Therefore, it is preferable that the inclination angle is larger in view of the function of the invitation. On the other hand, the larger the inclination angle, the smaller the area occupied by the tapered surface, so that the range in which the male contact 1 that has caused the position shift can be drawn narrow.

  Therefore, in this embodiment, a two-stage tapered shape is formed by combining the inclined surface 23 and the inclined surface 26 having different inclination angles. In other words, the present embodiment includes the inclined surface 23 having a large first inclination angle θ1 and the inclined surface 26 that covers the male contact 1 up to a range exceeding the inclined surface 23 although the second inclination angle θ2 is small. A two-stage invitation 20 is constructed. By doing so, the second tapered surface 25 can cope with the guiding in the region that cannot be covered by the first tapered surface 21 while ensuring the guiding function in the first tapered surface 21 that occupies a large area in the guiding 20. .

The preferred embodiments of the present invention have been described above. However, the configurations described in the above embodiments can be selected or changed to other configurations as appropriate without departing from the gist of the present invention.
For example, the shape of the invitation in the present invention is arbitrary, the shape in plan view as in the present embodiment is not limited to a rectangle, the shape in plan view can be a mortar-shaped invitation that is circular, The shape in plan view can be a polygon excluding a rectangle.

Further, in the present embodiment, the second tapered surface 25 is formed on the inclined surfaces 23 and 23 along the height direction Z on the assumption that the male contact 1 is displaced in the height direction Z. However, in the present invention, the region in which the second tapered surface 25 is provided is arbitrary, and the region in which the second tapered surface 25 is provided can be determined according to the tendency of displacement of the male contact 1.
For example, if it is clear in advance that the male contact 1 is likely to be displaced in the width direction Y, the inclined surfaces 26, 26 are provided on the inclined surfaces 22, 22 along the width direction Y as shown in FIG. Can be provided. Further, if the orientation of the displacement of the male contact 1 is unspecified, the inclined surfaces 26 and 26 are provided on both the inclined surfaces 22 and 22 and the inclined surfaces 23 and 23 as shown in FIG. That's fine. Furthermore, although illustration is omitted, for example, if it is clear in advance that the male contact 1 is displaced only in the upward direction in the height direction Z, the inclined surfaces 26 and 26 are not necessarily provided only on the upper inclined surface 23. It is not necessary to provide the inclined surfaces 26, 26 on both the pair of inclined surfaces 22, 22 or the pair of inclined surfaces 23, 23.

Moreover, although this embodiment showed the example which makes all of the several lead-in 20 into the two steps of the 1st taper surface 21 and the 2nd taper surface 25, this invention is not limited to this. For example, according to the present invention, only the lead-in 20 arranged in a part of the region can be made into two stages of the first tapered surface 21 and the second tapered surface 25.
Further, in the present embodiment, the guide 20 is composed of two stages of the first taper surface 21 and the second taper surface 25, but it is allowed to have a taper shape of three stages or more.

  Moreover, as long as each function can be exhibited, the shape and inclination | tilt angle of the 1st taper surface 21 and the 2nd taper surface 25 are arbitrary. For example, as shown in FIG. 8 (c), the inclined surface 26 forming the second tapered surface 25 can be tapered, and the second tapered surface 25 is formed as shown in FIG. 8 (d). It can be provided only in the vicinity of the periphery E. Further, as shown in FIG. 8E, the corner portion of the boundary between the inclined surface 23 and the inclined surface 26 can be formed into a chamfered shape such as an R surface or a C surface.

  In addition, the structure of the connector housing 10 shown by this embodiment is an example to the last, and this invention is widely applicable to the housing of an electrical connector provided with the lead-in 20.

DESCRIPTION OF SYMBOLS 1 Male contact 10 Connector housing 11 Housing main body 13 Fitting surface 14 Boundary surface 15 Contact cavity 16 Insertion hole 20 Induction 21 First taper surface 22 Inclination surface 23 Inclination surface 25 Second taper surface 26 Inclination surface 28 Hole 30 Induction

Claims (5)

A connector housing for an electrical connector having a plurality of contact cavities for receiving male contacts of a mating electrical connector,
The connector housing is
A fitting surface with the mating electrical connector is provided with a guide for guiding the male contact to the contact cavity,
The invitation is
A first taper surface having a first inclination angle, and a second taper surface having a second inclination angle smaller than the first inclination angle,
The second tapered surface is
Provided from the first tapered surface to the fitting surface,
A connector housing characterized by that. The second taper surface and the first taper surface are continuous in a fitting direction with the mating electrical connector;
The connector housing according to claim 1. The first tapered surface is composed of a plurality of inclined surfaces,
The second tapered surface is provided corresponding to at least one of the plurality of inclined surfaces.
The connector housing according to claim 1 or 2. A pair of the second tapered surfaces constitutes the first tapered surface and is provided on each of the pair of inclined surfaces arranged at symmetrical positions.
The connector housing according to claim 3. The guiding having the first tapered surface and the second tapered surface is:
Provided corresponding to all of the plurality of contact cavities, or provided corresponding to a part of the plurality of contact cavities,
The connector housing as described in any one of Claims 1-4.

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