JPS62259365A - Connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a connector.

"Prior Art" By attaching a first and second base to each other, a male contact provided on the first base and a female contact provided on the second base are brought into contact and an electrical connection is established. connector is used.

In this type of connector, a pin contact is generally used as the male contact, and the pin contact is inserted and fitted into the female contact by attaching the first and second base bodies.

The main parts of this type of conventional connector are constructed as shown in FIG.
2 is arranged protrudingly. A housing chamber 15 is provided in the second base body 13 attached to the first base body 11, and a female contact 14 is housed in this housing chamber 15.

The male contact 12 is formed into a pin shape, and the female contact 1
4, the contact pieces 14-L are arranged to face each other,
The end portions of the contact pieces 14-L facing the opening of the storage chamber 15 are bent in a direction toward each other, and an elastic clamping portion 16 is formed at this bent portion.

The pin diameter of the male contact 12 is set to be slightly larger than the clamping interval of the elastic clamping part 16.

2, Jt at 1:1 when the first and second bases 11.13 are installed.
The contacts 12 expand the gap between the elastic clamping parts 16,
It is inserted and fitted between the contact pieces 14.

When the male contact 12 and the female contact 14 are in a completely fitted state, the outer circumferential surface of the male contact 12 is brought into contact with the elastic clamping portion 16 at two points at opposing positions.

-1, as shown in 17M, in the contact state between the male contact 12 and the female contact 14, the contact force is P, the wedge angle is θ, the friction angle is θf, the friction force is PM, the spring constant of the contact is k, - If the displacement per contact is 6 and the insertion force is F, the following equation holds.

F = 2 P jan (θ+θf)
・+11P=k ・δ
(2) In the conventional connector having the configuration shown in FIG. 16, when the relationship between the insertion force F and the fitting depth D was actually measured, a relationship curve as shown in FIG. 18 was obtained, and the female contact 14 Fm when inserting the male contact 12 inside
A maximum insertion force designated ax results.

In this conventional connector, the spring constant determined at the final contact state is constant and the displacement δ increases as the insertion process progresses. Therefore, according to equation (2), as the insertion process progresses, the displacement δ increases and the contact force P increases. Normally, the wedge angle θ is small near the maximum contact force P, and the insertion force F is Almost all of the frictional force is PM.

In the process of inserting the male contact 12 into the female contact 14, the contact force P increases before the wedge angle θ becomes sufficiently small.
becomes a large value, and in the vicinity the maximum insertion force F IIax
is obtained.

``Problems to be solved by the invention'' In recent years, this type of connector has been significantly miniaturized as a whole, and the number of signal wires to be connected per base has also increased. Some proposals have been made in which the number of signal wires to be processed reaches several hundred.

For this reason, in this type of connector, the insertion force per core F
It is necessary to make the connector as small as possible so that the connector can be attached easily and smoothly even if the number of signal wires to be connected is large. However, in conventional connectors of this type, there is a maximum insertion force per core, which prevents smooth insertion, and this maximum value is relatively large.
A multi-core structure requires a large amount of force to attach.

However, in terms of miniaturization of connectors, conventional connectors of this type have a pin-shaped male lid, which has the disadvantage that the male connector is easily deformed or damaged when miniaturized. be.

This invention was made in view of the current state of conventional connectors of this type, and its purpose is to reduce the insertion horn per core, to make it lightweight and easy to install even with multi-core structures, and to make it compact. To provide a connector with a solid structure that does not cause deformation or breakage of contact parts even if the contact portion is

[Means for Solving the Problems] In the connector of the present invention, the first base body is provided with a male contact, the second base body is provided with a female contact, and the first base body is provided with a male contact.
By attaching the second bases to each other, the male contact is inserted into the female contact, and an electrical connection is established between the male contact and the female contact.

In this invention, the male contact has a structure in which first and second contact bodies extend opposite each other in the longitudinal direction and are connected to each other at connection points at both ends, and the first and second contact bodies are They are bulged and bent outward from each other with respect to the straight line connecting the connection points, and elastic contact portions are formed in the bulged and bent portions. On the other hand, the female contact has side pieces facing each other on both sides of the bottom extending in the longitudinal direction, and has a substantially U-shaped overall cross-sectional shape. When the 1j1 contact and the female contact are in a fitted state, the elastic contact portion of the male contact is formed to elastically contact the side piece of the female contact.

"Function" In this invention, when the first and second base bodies are attached to each other,
The male contact inserted and fitted into the female contact is
and the second contact body are connected to each other at connection points at both ends.

These first and second contact bodies are respectively bulged and bent to the outside, and when inserted and fitted, the elastic contact portion formed on the connecting body, which is biased with a relatively small force, comes into elastic contact with the side piece of the female contact. . Therefore, the insertion force is reduced, and it can be smoothly attached with a light insertion force.

Also, even if the structure is miniaturized, deformation waves in the contact part...
is less likely to occur.

Embodiment J Hereinafter, the connector of the present invention will be explained in detail based on an embodiment thereof using the drawings.

FIG. 1 shows the overall main part configuration of the first embodiment of the connector of the present invention, and FIGS. 2(A), (B), and (C) show the male contacts in the first embodiment of the connector of the present invention. The configuration is shown below. In the embodiment, first and second contact bodies 21 and 22 made of metal are extended in the form of strips facing each other in the longitudinal direction.
A male contact 20 is formed.

These first and second contact bodies 21.22 are connected to each other at connection points P+ and Pz at both ends, and the first and second contact bodies 21.22 are connected to each other at connection points P+ and Pz at both ends. are bent outward from each other. Due to this bulging and bending, the first and second contact bodies 21.22 have elastic contact portions 23.2.
4 is formed.

3(A), (B), and (C) show the configuration of a female contact in a first embodiment of the connector of the present invention. In the embodiment, a bottom piece 26 is formed in a band shape from a metal material,
Side pieces 27 and 28 facing each other are integrally formed on both side edges of the female contact 30.

An insertion slope 31 is formed at one end of the female contact 30 such that the height of the side piece decreases toward the end with respect to the side pieces 27 and 28.

In the first embodiment, a yielding contact is housed within a first base, and a female contact is provided protruding from a second base.

That is, as shown in 1II, the first base 11 is formed of, for example, a synthetic resin material and has a substantially rectangular parallelepiped shape.
A plurality of storage chambers 36 are formed in the first housing 11 from the first plate surface 35 as shown in FIG. A U-shaped inclined surface 37 is formed on the periphery of the opening of the storage chamber 36 so that the opening expands in the direction of the plate surface 35.

When the first and second base bodies 11 and 13 are attached to each other,
The female contact 30 is inserted into the storage chamber 36 with the insertion slope 3I facing the side of the storage chamber 36 where the sloped surface 37 is not formed. At this time, the female contact 30 has its bottom piece 2
6 and the side pieces 27, 28 are inserted into the storage chamber 36 along the inclined surface 37 formed in the storage chamber 36.

The first and second contact bodies 21.22 are connection bodies P.

They are connected and integrated at P2, and the aperture of the tip is formed sufficiently smaller than the distance between the side pieces 27 and 28 of the female contact 30, so the female contact 30 is connected as shown in FIG. Male contact 20 is smoothly inserted between side pieces 27 and 28 of 30. As the insertion progresses further, the first and second contact bodies 21 and 22 come into contact with the side pieces 27 and 28, respectively, and the side pieces cause the first and second contact bodies to 21 and 22 are elastically biased in the axial direction, and the outer contact 20 is inserted into the female contact 30 while the interval between the elastic contact portions 23 and 24 is narrowed. In the fully inserted state, the male contact 20 is held in two-point contact within the female contact 30 by the resilient contact portions 23, 24, as shown in No. 41ffi (C).

FIG. 7 shows the state of contact of the side piece 28 of the female contact with the second contact body 22 of the male contact when the side piece 28 is in contact with the second contact body 22.
When the contact body 22 and the side piece 28 are in a non-contact state, the second contact body 22 is located at the position shown by the dotted line. As the second contact body 22 is inserted into the side piece 28, the wedge angle θ decreases, and the second contact body 22 is elastically biased by the side piece 28 in the axial direction of the male contact.

Since the male contact has a shape in which the first and second contact bodies 21 and 22 are connected at both ends, the first and second contact bodies 21 and 22 themselves are axially biased with a relatively small elastic biasing force. It can be biased towards

In the configuration shown in Fig. 7, the spring constant at the contact point has a maximum value at the contact start position yl with respect to the mating depth y, and the spring constant decreases until the mating progresses and reaches the contact position yc of the elastic contact part. decreases almost hyperbolically.

The displacement δ of the contact body is zero up to the contact start position y1,
As the fitting progresses, it initially increases linearly and increases to reach a saturation value at the contact point 11 y c of the elastic contact portion.

In addition, the wedge angle θ has a maximum value at the contact start position y1,
As the fitting progresses, the value decreases almost linearly, and becomes zero at the contact position y of the elastic contact portion.

Therefore, in equation (2) above, the displacement δ increases as the fitting depth y increases, but since the spring constant k rapidly decreases from the contact start position y, the contact force P increases slowly. Furthermore, in formula [11], even if the contact force P increases slowly, the wedge angle θ decreases as the fitting occurs, and the increase in the insertion force F becomes gradual as shown in FIG.

Figure 1O shows the results of actual measurement of the insertion force F in a conventional connector configured as shown in Figure 16. Comparative actual measurements were made using a connector with almost the same dimensions as the connector that was the subject of measurement in Figure 9. This is what was done. In other words, both are actual measurements taken on a single-core structure, and the length of the mating portion of the male contact 12 with the structure shown in FIG. 16 and FIGS. 6(A) and (B) The male contacts 20'' shown were selected to have the same fitting portion length and the same elastic modulus. Furthermore, the female contact 14 of the structure shown in FIG. 16 and the female contact 30 shown in FIGS. 6(A) and 6(B) are made of materials having the same elastic modulus and are formed with the same distance between the opposing side plates. used. The actual measurement results obtained under these conditions are shown in Figures 9 and 10, and it is confirmed that the final insertion force is almost equal at F2 in Figures 9 and 10. Ta. Also, in Fig. 1O, the maximum insertion force Fl! and the final insertion force F2, F
,! It was recognized that there is a relationship of −1,5Fz.

FIGS. 11(A) and 11(B) show the configuration of the main parts of the second embodiment of the present invention, and this embodiment shows the female contact 3.
On the insertion opening side of the male contact 20 of the side pieces 27 and 2B of 0, a part of the side piece is cut and raised to form biasing pieces 41 and 42 that can be elastically biased at right angles to the plate surface of the side piece. .

In this embodiment, when inserting the male contact 20, the first
and the second contact body 21.22, these biasing pieces 4
1.42 is biased outwardly, the female contact 30
Since the male contact 20 is inserted within, the dimensional tolerance of the contact can be absorbed and the male contact 20 can be inserted smoothly with a lower insertion force.

FIGS. 13(A) and 13(B) show the configuration of the main parts of a third embodiment of the present invention. With respect to the straight line between P and P, it is bulged and bent twice, once on each side. Furthermore, in the third embodiment, the first
and elastic contact portions 23 located opposite to each other with respect to the straight line connecting the connection point P+Pz to the second contact body 21, 22.
-1.24-1 and 23-2.24-2 are connection points p,
Their positions are shifted from each other along the straight line connecting P2.

14(A), (B), and (C) show the process of inserting and fitting the male contact 20 into the female contact 30 in the third embodiment. At the start of insertion, as shown in (8), The narrow diameter tip of the male contact 20 is smoothly inserted into the female contact 30. As the insertion progresses, the elastic contact portion 23-1 of the contact body 21 first comes into contact with the side piece 28,
The contact body 21 continues to be inserted into the female contact 30 while being elastically biased by the side pieces 2.

Next, the elastic contact portion 24 - 1 comes into contact with the side piece 27 , and while the contact body 22 is elastically biased by the side piece 27 , the male contact 20 is further inserted into the female contact 30 . -2. Bringing the elastic contact portions into contact with the side pieces 27 and 28, respectively, in the order of 24-2,
The insertion and fitting into the female contact 30 progresses while the contact bodies 21 and 22 are elastically biased by the side pieces 27 and 28.

In the final mated state, the male contact 20 has elastic contact portions 23-1.23-2.24 within the female contact 30.
-1.24-2 provides 4-point contact support.

The configuration of the main parts shown in FIGS. 15(A) and 15(B) is the fourth embodiment of the present invention.
This is an example in which a part of the side piece 27, 28 of the female contact 30 is cut and raised to form a biasing piece 41, 42 that can be elastically biased at right angles to the plate surface of the side piece. In this fourth embodiment, the first and second contact pieces 21.22 provide the following:
Since these biasing pieces 41, 42 are biased outwardly, dimensional tolerances of the contacts are accommodated and insertion of the male contact 20 into the female contact 30 is performed more smoothly with lower insertion force.

In any of the second to fourth embodiments, as shown in the first embodiment, the degree of increase of the insertion force F with respect to the fitting depth y becomes gradual, and the insertion force F itself also decreases. do. Therefore, even if the number of signal wires to be UH increases, the connector can be installed easily (and smoothly), and the retaining force of the tangential fit between the female contact and the male contact is strong and the fit is held stably. It is done.

Furthermore, the deflection in the width direction of the first and second contact pieces 21, 22 of the male contact during fitting and mounting is performed between the side pieces of the female contact. The spacing between the side pieces of this female contact can be manufactured with precision (minimum spacing), so it is easy to design and manufacture contacts that can be mounted in high density, and the overall shape of the connector can be significantly reduced. I can do it.

The insertion slope 31 formed in the female contact 30 and the accommodation chamber 36 of the first base body 11 guide the female contact 30 when fitting into the first base body 11 in which the male contact 20 is accommodated.
Since this is done by the inclined surface 37 formed at the opening of the chamfer, a large space is not required for chamfering, and the overall size can be reduced.

In the embodiment, a configuration in which elastic contact portions were formed in one and two locations on the first and second contact bodies was explained.
The number of elastic contact parts is not limited to that of the embodiment, and it is also possible to have a configuration in which three elastic contact parts are formed on each of the first and second contact bodies, for example.

Furthermore, the insertion slope formed on the female contact and the slope formed on the first base body are not limited to those of the embodiments. It is also possible to adopt a configuration in which an inclined surface is formed.

``Effects'' As explained in detail above, according to the present invention, the increasing tendency of the insertion force with respect to the mating depth of the male contact with respect to the female contact is slowed down, and the insertion force itself is also reduced. Even when the connector is constructed, it is possible to provide a connector that can be smoothly attached and detached with a small insertion force and that can be significantly miniaturized in terms of structure.

[Brief explanation of drawings]

FIG. 1 shows the configuration of essential parts of a first embodiment of the present invention.
2(A), (B), and (C) are respectively a front view, a top view, and a side view, and FIG. 3(A) (a) showing the configuration of a male contact used in the first embodiment of the present invention. ) (C
) are a front view, a top view, and a side view showing the configuration of a female contact used in the first embodiment of the present invention, and FIG. 4 (
A), (B), and (C) are diagrams respectively showing the fitting process of the male contact and the female contact in the first embodiment of the present invention, and FIG.
FIG. 6(A) is a diagram showing the accommodation state of the male contact in the base body and the fitted state of the female contact with the male contact.
(B) is a side sectional view and a plan sectional view showing the housing state of the male contacts in the first base body and the arrangement of the female contacts that fit into the male contacts in the first embodiment of the present invention, and FIG. Figures 8(A), 8(B), and 8(C) showing the contact state between the contact body and the side piece in this invention show the fitting depth y between the male and female contacts in this invention, and the spring constant k, respectively. FIG. 9 is a curve showing the relationship between displacement δ and wedge angle θ, FIG. 9 is a curve showing the relationship between fitting depth y and insertion force F in a conventionally proposed connector, and FIG. The curve showing the relationship between the fitting depth y and the insertion force, FIG. B) is a plan view and a side view showing the configuration of a female contact according to a third embodiment of the present invention, and FIG.
) (B) is a plan view and a side view showing the structure of the male contact of the third embodiment of the present invention, and FIG. 14 (A
) (B) and (C) are plan views respectively showing the fitting process of the male and female contacts in the third embodiment of the present invention, and FIGS. 15(A) and (B) are the fourth embodiment of the present invention. FIG. 16 is a side view and a plan view showing the configuration of a conventionally proposed connector, and FIG.
FIG. 7 is a diagram showing the relative positional relationship between a male contact and a female contact during a mating operation, and FIG. 18 is a diagram showing the relationship between the mating depth P and insertion force in a conventionally proposed connector. 11: first base, 12: male contact, 13: second base, 14: jl! Contact, 15: Containment room, I6:
Elastic clamping part, 20: Male contact, 21.22: Contact body, 23.24: Elastic contact part, 26: Bottom piece, 21.28:
Side piece, 30: Female contact, 35: Plate surface, 36: Accommodation chamber, 41.42: Biasing piece.

Claims (1)

[Scope of Claims] A first base body is provided with a male contact, a second base body is provided with a female contact, and when the first and second base bodies are attached to each other, the male contact is inserted into the female contact. In a connector that is inserted and fitted to establish an electrical connection between the male contact and the female contact, the male contact has first and second contact bodies that extend opposite each other in the longitudinal direction, and that the male contact has first and second contact bodies that extend opposite each other in the longitudinal direction. The first and second contact bodies are connected to each other at a connection point, the first and second contact bodies are bulged and bent outward from each other with respect to a straight line connecting the connection point, and an elastic contact portion is formed at the bulge and bend. The female contact has side pieces facing each other on both sides of a bottom piece extending in the longitudinal direction, and has a substantially U-shaped cross section, and in the inserted and fitted state, the elastic contact portion is A connector configured to make elastic contact with the side piece.