JP3975222B2 - Connector and portable terminal equipped with this connector - Google Patents

Description

  The present invention relates to a connector including a receptacle and a plug that are coupled and electrically connected to each other.

  Conventionally, in a connector that includes a receptacle and a plug and that conducts by inserting the plug into an insertion groove provided in the receptacle, a receptacle contact disposed on both sides of the insertion groove and both sides of the plug body There is a problem in that foreign matter is caught between plug contacts disposed so as to correspond to the receptacle contacts, resulting in poor connection. In this connector, foreign matter was removed by repeatedly inserting and removing the plug. However, since the receptacle contact and plug contact were in surface contact, it was difficult to apply a concentrated load, and the foreign matter removal effect was low. It was.

In contrast to this, either one of the receptacle contact (socket contact) and the plug contact (header contact) is provided with a contact projection that elastically protrudes in the direction intersecting the insertion / extraction direction of the plug into the insertion groove, and the other A contact portion that extends along the insertion / removal direction of the plug into and from the insertion groove and contacts the contact projection when the plug is inserted and removed from the insertion groove is provided, and a recess is formed on the surface of the contact portion that contacts the contact projection. A provided connector has been proposed (Patent Document 1).
JP 2004-111081 A

  In the above-described connector, when the contact convex portion enters the concave portion, both contact with each other at two points, so that the foreign matter removing effect can be enhanced as compared with the surface contact. However, the contact convex portion that contacts the inner surface of the concave portion or the opening edge does not slide with other contacts when the plug and the receptacle are fitted, so that foreign matter is difficult to remove and the contact resistance becomes unstable. There is a fear. Also, if the plug and receptacle are misaligned (especially in the pitch direction) when they are fitted, the contact point between the contact convex part and the concave part becomes one point or does not enter the concave part. There is a risk that the performance may vary.

  On the other hand, if the contact protrusion is flat or close to the contact part so that it slides with other contacts, the load is concentrated when the plug and the receptacle are in contact. This makes it difficult to remove foreign matter.

  Furthermore, foreign matter is likely to accumulate in the concave portion by repeatedly inserting and removing the plug, and the contact foreign matter is less likely to enter the concave portion due to the accumulated foreign matter and newly removed foreign matter is difficult to drop. Since it is not removed, the contact resistance between the plug and the receptacle may become unstable. In addition, if foreign matter adheres to the recess before insertion of the plug, the foreign matter can easily enter the recess due to insertion / extraction of the plug, and in this case, the contact resistance between the plug and the receptacle may become unstable.

In order to solve the above problems, a connector according to the present invention includes a plug body made of an insulating member, a plug having at least one plug contact held by the plug body, and the plug made of an insulating member. A receptacle body provided with an insertion groove, and at least one or more receptacle contacts held in the receptacle body so as to be in contact with the plug contact when the plug is inserted into the insertion groove. A receptacle provided with a contact projection that elastically protrudes toward the plug contact when the plug is inserted into and removed from the insertion groove. The contact portion where the contact convex portion slides when the plug is inserted into and removed from the insertion groove. Provided, the protrusions on the contact portion projecting into the convex contact portion side, together with the extending protruding along the insertion direction of the plug with a narrow width than the raised portion, continuous with one said protrusion of each end Two protrusions projecting toward the contact protrusion formed on the plug, and the portion of the contact protrusion that is in sliding contact with the contact portion in the cross-section perpendicular to the insertion / extraction direction of the plug is the width of the protrusion. The plug is configured to be a straight line having a larger width, and the plug is formed by insert-molding the plug body and the plug contact .

  It is preferable that the convex part has a shape extending along the plug insertion / extraction direction.

  The contact protrusion is preferably in contact with the protrusion when the receptacle and the connector are fitted.

  It is preferable that no concave portion is formed between the protruding portion and the convex portion.

  The convex portion is preferably formed so as to be separated from the contact convex portion when the plug is inserted into the insertion groove as it goes from one end portion on the projection side to the other end portion. .

  Either one of the plug and the receptacle is arranged on the display device unit, the other is arranged on the substrate, and the display device unit and the substrate are electrically connected by inserting the plug into the insertion groove. Can do.

  Either one of the plug and the receptacle is disposed on the image sensor unit, the other is disposed on the substrate, and the image sensor unit and the substrate are electrically connected by inserting the plug into the insertion groove. it can.

  The connector can be applied to a mobile terminal.

According to the present invention, when the plug is inserted into the receptacle, the contact protrusion is slidably contacted with the protrusion in a wide range to remove the foreign matter, and then the process of sliding contact with the protrusion that is narrower than the protrusion with a concentrated load is obtained. Therefore, excellent electrical performance and reliability can be obtained.
In addition, since the cross section of the slidable contact portion of the contact convex portion is a straight line having a width larger than the width of the contact convex portion, even if a positional deviation occurs when the plug and the receptacle are fitted, there is little variation. Stable contact performance can be maintained.

  The connector according to the present embodiment includes a receptacle 1 (FIG. 1) and a plug 2 (FIG. 4) that are coupled to each other and electrically connected. For example, one of the receptacle 1 and the plug 2 is arranged on the LCD (liquid crystal display) (display device) unit or CCD (charge coupled device) (imaging device) unit side, and the other is connected to these units to control the operation. By arranging the receptacle 1 and the plug 2 on the substrate side, the unit and the substrate are electrically connected. Further, the plug 2 and the receptacle 1 according to the present embodiment are applied to a connection in a portable terminal (for example, a mobile phone, a PDA (Personal Digital Assistant) including a portable computer) or a connection between the portable terminal and an external device. can do. In addition to the LCD unit, the receptacle 1 and the plug 2 can be applied to a CRT (Cathode Ray Tube) display unit, a plasma display unit, and an organic electroluminescent element display unit as a display device. In addition to the CCD unit, the receptacle 1 and the plug 2 can be applied to a CMOS (Complementary Metal Oxide Semiconductor) unit as an image pickup device.

  A receptacle 1 shown in FIG. 1 is made of a synthetic resin injection molded product that is an insulating member, and is provided with a receptacle body 3 provided with insertion grooves 31 into which plugs 2 are inserted and removed, and both sides of the insertion grooves 31. A plurality of receptacle contacts 4.

  The receptacle contact 4 shown in FIG. 2 is made of a band-shaped metal material formed by stamping, and is held in the receptacle body 3 so as to be bent in a U shape and sandwich the edge of the insertion groove 31. And a direction in which the distance between the holding portion 41 and the holding portion 41 is changed from the one end of the holding portion 41 located inside the insertion groove 31 to form an S-shape (to the insertion groove 31). The plug 2 in the receptacle body 3 is inserted into the insertion groove 31 from one end located outside the insertion groove 31 in the holding portion 41 and the bending portion 42 that can be bent in a direction intersecting the insertion / extraction direction of the plug 2. And a terminal portion 43 extending to a position protruding from the end in the direction. The terminal portion 43 is fixed to the conductive pattern of the circuit board by soldering, for example.

  The receptacle contact 4 is produced by applying a base plating (for example, nickel plating) to a base material (for example, phosphor bronze, beryllium copper, titanium copper) and then performing a finish plating (for example, gold plating). The thickness of the receptacle contact 4 is set to 0.05 to 0.5 when the connector pitch is 0.3 to 0.5 mm from the viewpoint of spring design and workability in consideration of miniaturization and low profile of the connector. It is preferably 0.15 mm. In this case, the base plating is preferably 0.5 μm to 4 μm. This is because if it is less than 0.5 μm, the effect as the base plating cannot be obtained, and if it exceeds 4 μm, cracks are likely to occur due to deformation during sliding contact with the plug 2.

  The holding portion 41 is provided with a locking portion 46 extending in the width direction in order to securely hold the receptacle contact 4 on the receptacle body 3.

  A contact convex portion 44 protruding in a direction away from the holding portion 41 is formed on the bent portion 42 by bending. The contact protrusion 44 elastically protrudes in a direction intersecting the insertion / extraction direction of the plug 2 with respect to the insertion groove 31. Further, the contact convex portion 44 is formed in a straight line when viewed in cross section at a portion that comes into sliding contact with the contact portion 61 described later, and the width W1 of the convex portion (between the juxtaposed convex portion 68 and the convex portion 69). The width W2 is larger (the sum of the gap and the width of the projections 68 and 69) (FIG. 3). Thus, since the contact convex portion is not a curved surface that makes it difficult to obtain a design shape when the plate thickness is thin, it can be accurately and efficiently produced.

  From the contact convex part 44, the front-end | tip part 45 is extended to the holding | maintenance part 41 side for the attraction | suction at the time of plug 2 insertion, and prevention of buckling.

  The plug 2 shown in FIG. 4 includes a substantially rectangular parallelepiped plug body 5 made of a synthetic resin insert-molded product, which is an insulating member, and a receptacle 1 on each side of the plug body 5 made of a strip-like metal member along the longitudinal direction. A plurality of plug contacts 6 arranged at the same pitch corresponding to the receptacle contacts 4 in FIG.

  The plug contact 6 shown in FIG. 5 is made of a band-shaped metal material formed by stamping, and faces the front and back surfaces away from the plug body 5 along the insertion / extraction direction of the plug 2 into the insertion groove 31. It has a contact portion 61 that is held by the plug body 5 in an extending manner, and a terminal portion 62 that extends in a direction away from the contact portion 61. The terminal portion 62 is fixed to the conductive pattern of the circuit board by soldering, for example. In the terminal portion 62, a holding recess 65 is provided in the vicinity of the contact portion 61 to make the thickness dimension thinner than other portions. As shown in FIG. 6, a stepped portion 70 extending from the contact portion 61 along the insertion / extraction direction of the plug 2, connected to the terminal portion 62, and protruding toward the contact convex portion 44 can be formed.

  On the other hand, on both side surfaces along the longitudinal direction of the plug main body 5, flange portions 51 extending along the longitudinal direction are respectively provided at one end in the short direction, and the terminal portion 62 of the plug contact 6 is The part 51 is penetrated. The plug contact 6 is inserted when the plug body 5 is molded, and the synthetic resin forming the flange 51 flows into the holding recess 65 and solidifies, so that the plug contact 6 is prevented from coming off from the plug body 5. ing. Furthermore, the flange 51 can prevent the molten solder from creeping up on the plug contact 6 (solder rising) due to a capillary phenomenon or the like when the connector is mounted on a circuit board or the like.

  The plug contact 6 is produced by applying a base plating (for example, nickel plating) on a base material (for example, phosphor bronze) and then performing a finish plating (for example, gold plating). The plate thickness of the plug contact 6 is 0.05 to 0.5 when the connector pitch is 0.3 to 0.5 mm from the viewpoint of spring design and workability in consideration of miniaturization and low profile of the connector. It is preferably 0.15 mm.

  Further, on the surface of the contact portion 61 where the contact convex portion 44 of the receptacle contact 4 is slidably contacted, a protrusion 66 that protrudes toward the contact convex portion 44 when the plug 2 is inserted into and removed from the insertion groove 31, and an end portion Two protrusions 68 and 69 that are formed integrally with the protrusion 66 and extend along the insertion / extraction direction of the plug 2 and protrude toward the contact protrusion 44 when the plug 2 is inserted into and removed from the insertion groove 31. And are provided. The section perpendicular to the insertion / extraction direction of the plug 2 of the protrusions 68 and 69 is a semicircle having an arc on the contact protrusion 44 side. Moreover, the planar view shape of the convex parts 68 and 69 is a substantially rectangular shape in which the long sides which oppose are mutually parallel. The convex portions 68 and 69 are formed by pressing a mold having the same concave shape as this shape against one surface of the contact portion 61 so that the portions where the convex portions 68 and 69 are not provided are crushed. At this time, depending on the length of the mold, a portion that is not crushed by the mold at the lower portion of the contact portion 61 is formed as the stepped portion 70. On the other hand, it can also be formed by pressing a mold having a projection shape identical to the shape of the convex portions 68 and 69 against the back surface of the contact portion 61 (the surface on which the convex portions 68 and 69 are not provided). . Here, the tip portion 67 extends from the projection portion 66 in a direction away from the contact portion 61 in order to guide the plug 2 when it is inserted and to prevent buckling. The distal end portion 67 exhibits an insert holding function together with the holding recess 65.

  The height of the convex portions 68 and 69 protruding from the contact portion 61 is preferably 0.01 to 0.1 mm when the connector pitch is 0.3 to 0.5 mm, for example. This is because when the height is less than 0.01 mm, the effect of removing foreign matter is reduced by the protrusions 68 and 69, and the protrusions 68 and 69 exceeding 0.1 mm are formed by pressing the back surface of the contact part 61. This is because the material may not be stretched and cracks and breakage may occur. Further, from the viewpoint of the foreign matter removing function and workability, the height of the convex portions 68 and 69 is more preferably 0.02 to 0.05 mm. In order to prevent cracks and breakage during the formation of the convex portions 68 and 69, a mold having a concave shape identical to the shape of the convex portions 68 and 69 is provided on one surface of the contact portion 61 (surface on which the convex portions 68 and 69 are provided). It is preferable to form the convex parts 68 and 69 by pressing to the right.

  One or a plurality of protrusions may be provided. However, when a plurality of protrusions are provided, it is preferable to arrange them in the direction intersecting the insertion / extraction direction of the plug 2 because the effect of removing foreign matters is enhanced. Further, it is preferable that the plug 2 is formed so as to be separated from the contact convex portion 44 when the plug 2 is inserted into and removed from the insertion groove 31 from one end portion toward the other end portion, because foreign matters are easily removed. . In addition, the plugs 2 and 69 in the insertion / extraction direction orthogonal cross section of the protrusions 68 and 69 are semicircular, a substantially triangular shape having a vertex on the contact protrusion 44 side, and a curve having an arbitrary radius of curvature on the contact protrusion 44 side. A semi-curved shape can also be used. The shape of the projections 68 and 69 in plan view may be a substantially rectangular shape in which the long sides facing each other are parallel to each other, or a substantially triangular shape in which the long sides gradually approach.

  According to the above configuration, as shown in FIG. 7, when the plug 2 is inserted into and removed from the receptacle 1, the contact protrusion 44 of the receptacle contact 4 is narrower than the protrusion 66 and the protrusion 66 of the plug contact 6. The convex portions 68 and 69 are in sliding contact with each other. That is, particularly when the plug 2 is inserted, the wide protrusion 66 slides in a wide range to remove foreign matter, and then the surface of the cleaned contact protrusion is subjected to a strong force due to the concentrated load on the narrow protrusions 68 and 69. By making sliding contact with, it is possible to further remove foreign matters and to obtain extremely excellent electrical performance.

  On the other hand, when the connector is mounted, flux or the like may scatter and adhere to the contact portion 61 to become foreign matter. In this case, even if the plug 2 is inserted (fitted) into the receptacle 1, the foreign matter can be moved to the outside of the convex portions 68 and 69 by inserting and removing the plug 2, so that the foreign matter can be reliably removed and contact resistance can be removed. Can be stabilized.

  Further, the contact protrusion 44 is in contact with the contact portion 61 in a straight line having a width larger than the width of the protrusions 68 and 69 at the portion in contact with the contact portion 61 in the cross section orthogonal to the plug insertion / extraction direction. Even if the receptacle contacts 4 are misaligned, stable electrical performance and reliability can be obtained with little variation.

  In addition, when one of the end portions of the protrusions 68 and 69 is formed integrally with the protrusion 66, a recess is not formed between the protrusion 66 and the protrusions 68 and 69. Therefore, there is little possibility that foreign matter accumulates, and stable contact resistance can be obtained.

  Moreover, since the part which contacts the contact part 61 among the contact convex parts 44 is a straight line by cross-sectional view, it can process accurately. On the other hand, by providing the protrusions 68 and 69 on the contact portion 61, the contact of the receptacle contact 4 with the plug contact 6 can be secured even if the plug contact 6 is thinned.

  In the present embodiment, the function of the receptacle contact 4 and the function of the plug contact 6 may be interchanged. That is, the plug contact 6 may have the same configuration as the contact convex portion 44, and the same configuration as the protrusion 66 and the convex portions 68 and 69 may be provided in the receptacle contact 4.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

It is a top view which shows the structure of the receptacle which concerns on embodiment of this invention. It is a perspective view which shows the structure of the receptacle contact which concerns on embodiment of this invention. It is a figure which shows the relationship of the width | variety when the contact convex part of the receptacle contact which concerns on embodiment of this invention, and the convex part of a plug contact are in sliding contact. It is a top view which shows the structure of the plug which concerns on embodiment of this invention. It is a perspective view which shows the structure of the plug contact which concerns on embodiment of this invention. It is a perspective view which shows the structure of another example of the plug contact of embodiment of this invention. It is sectional drawing which shows a state when the receptacle which concerns on embodiment of this invention is inserted in the plug.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Receptacle 2 Plug 3 Receptacle main body 4 Receptacle contact 5 Plug main body 6 Plug contact 31 Insertion groove 44 Contact convex part 61 Contact part 63 Concave part 66 Protrusion part 68 Convex part 69 Convex part

Claims (8)

A plug body made of an insulating member, and a plug having at least one plug contact held by the plug body;
A receptacle body made of an insulating member and provided with an insertion groove into which the plug is inserted and removed, and held in the receptacle body so as to be in contact with the plug contact when the plug is inserted into the insertion groove. A receptacle having at least one or more receptacle contacts;
A connector with
The receptacle contact is provided with a contact protrusion that elastically protrudes toward the plug contact when the plug is inserted into and removed from the insertion groove.
The plug contact is provided with a contact portion with which the contact protrusion slides when the plug is inserted into and removed from the insertion groove,
The contact portion is formed with a protrusion protruding toward the contact protrusion, a width narrower than the protrusion, and extending along the insertion / extraction direction of the plug, and one end of each end is formed continuously with the protrusion. And two convex portions protruding toward the contact convex portion side ,
The contact convex portion is configured such that a portion in sliding contact with the contact portion in a cross section orthogonal to the insertion / extraction direction of the plug is a straight line having a width larger than the width of the convex portion,
The plug connector, characterized in that is obtained the plug body and the plug contact insert molding. The connector according to claim 1, wherein the convex portion has a shape extending along an insertion / extraction direction of the plug. The connector according to claim 1, wherein the contact convex portion is in contact with the convex portion when the receptacle and the connector are fitted. The connector according to any one of claims 1 to 3, wherein a concave portion is not formed between the protruding portion and the convex portion. The said convex part was formed so that it might space apart from the said contact convex part when inserting the said plug into the said insertion groove as it goes to the other edge part from the one edge part which is the said projection part side. Item 5. The connector according to any one of Items 1 to 4. One of the plug and the receptacle is disposed on the display device unit, the other is disposed on the substrate, and the display device unit and the substrate are electrically connected by inserting the plug into the insertion groove. Item 6. The connector according to any one of Items 1 to 5. One of the plug and the receptacle is disposed on the image sensor unit, the other is disposed on the substrate, and the image sensor unit and the substrate are electrically connected by inserting the plug into the insertion groove. Item 6. The connector according to any one of Items 1 to 5. A portable terminal comprising the connector according to claim 1.

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