JP7073054B2 - Receptacle connector and manufacturing method of receptacle connector - Google Patents

Description

The present invention relates to a connector for connecting substrates of an electric device, an electronic device, or the like, and more particularly to a method for manufacturing a receptacle connector and a receptacle connector that are detachably fitted to a plug connector on the other side.

Conventionally, by fitting a plug connector mounted on one board and a receptacle connector mounted on the other board, conduction between boards such as electric devices and electronic devices is achieved. In these conventional receptacle connectors, a plurality of receptacle contacts having a contact portion in contact with the plug contact of the plug connector and a connection portion connected to the other board are held and arranged in a housing in which the plug connector is fitted. (See, for example, Patent Document 1 and Patent Document 2).

Further, in order to prevent corrosion of the substrate, a solvent such as conformal coating may be applied to the connection portion of the receptacle contacts held and arranged in the housing as described above.

Japanese Unexamined Patent Publication No. 2012-238519 Japanese Unexamined Patent Publication No. 2013-016410

However, if a gap is formed between the receptacle contact and the housing, the solvent applied to the connection part will wet up to the contact part, and there is a risk that poor connection between the boards will occur when mating with the plug connector. There is.

Further, in order to prevent a gap from being formed between the receptacle contact and the housing, it is conceivable to integrally mold the receptacle contact with the housing. However, in order to integrally mold, it is necessary to sandwich the receptacle contacts from both sides with a mold and fill them with resin, and in the conventional structure of the receptacle contacts, there is no space for sandwiching without damaging the contact portion or the like. , Mold holes may be formed on both sides of the receptacle contact, which may reduce the quality of the receptacle connector.

As described above, in the conventional structure of the receptacle connector, a hole is formed by the mold during integral molding, and the quality of the receptacle contact such as poor connection due to the wetness of the solvent may be deteriorated, so that the quality is deteriorated. There has been a demand for a structure of a receptacle connector that can improve connection stability while suppressing the problem.

Therefore, an object to be solved by the present invention is to provide a receptacle connector and a method for manufacturing a receptacle connector capable of improving connection stability while suppressing deterioration of quality.

In order to solve the above-mentioned problems, the receptacle connector according to the present invention includes a plurality of receptacle contacts having a first contact portion and a second contact portion in contact with the plug contact of the plug connector, and a connection portion mounted on a substrate. A receptacle connector comprising a housing in which a receptacle contact is held and arranged and into which the plug connector is fitted.
The receptacle contact is an elastic portion that is erected from the connection portion and has the second contact portion, a holding portion that is laid horizontally from the elastic portion in a flat plate shape, and the first contact that is erected from the holding portion. With a part,
The first contact portion of the curved portion connected to both ends in the width direction of the holding portion, both ends in the longitudinal direction of the holding portion, and the first contact portion and the elastic portion, which are two standing portions. And the portion closer to the elastic portion is covered by the housing on the lower surface side facing the substrate so that the first contact portion and the elastic portion cannot be visually recognized from the substrate side at the time of mounting, and the portion of the holding portion. The central portion in the width direction is exposed on the lower surface side .

The above-mentioned receptacle connector is curved so as to be continuously provided between both ends in the width direction of the holding portion of the receptacle contact, both ends in the longitudinal direction of the holding portion, and the first contact portion and the elastic portion which are two standing portions. The first contact portion and the portion closer to the elastic portion of the portion are covered by the housing on the lower surface side facing the substrate so that the two standing portions cannot be visually recognized from the substrate side at the time of mounting. Therefore, in order to prevent corrosion of the board, when a solvent such as conformal coating is applied to the connection part, the solvent applied to the connection part gets wet to the contact part, and when it is fitted with the plug connector, it is between the boards. It is possible to prevent a situation in which a connection failure occurs. Therefore, according to the receptacle connector of the present invention, it is possible to improve the connection stability while suppressing the deterioration of the quality.

In the receptacle connector according to one aspect of the present invention, both ends in the width direction of the holding portion are a pair of width expansion portions protruding outward from the positions of both side edges of the contact portion.

In the receptacle connector according to one aspect of the present invention, both ends of the holding portion in the width direction have a width dimension of 0.03 mm or more and 0.12 mm or less, respectively. When the width dimension of both ends in the width direction of the holding portion is 0.03 mm or more and 0.12 mm or less, it is possible to improve the holding stability of the receptacle contact by the housing while avoiding the increase in size of the receptacle contact, and the solvent. It is possible to prevent the solvent from getting wet more reliably.

Further, in order to solve the above-mentioned problems, the method for manufacturing a receptacle connector according to the present invention has a plurality of first contact portions and second contact portions that come into contact with the plug contacts of the plug connector, and a plurality of connection portions to be mounted on a substrate. A method of manufacturing a receptacle connector comprising a receptacle contact and a housing in which the receptacle contacts are held and arranged and into which the plug connector is fitted.
From the plate-shaped member, the connecting portion, an elastic portion that is erected from the connecting portion and curved at least once and has the second contact portion, and a flat plate-shaped holding from the elastic portion. A first step of forming the receptacle contact having a predetermined shape having the portion and the first contact portion erected from the holding portion.
The receptacle contact having the predetermined shape is arranged on the one mold member of the mold composed of one mold member and the other mold member, and is located outside the positions of both side edges of the first contact portion. Pressing contact from the direction in which the plug connector is fitted at the portion of the other mold member in which the pair of width expansion portions of the overhanging holding portion is moved to the mold clamping position with the one mold member. In this state, the space forming the housing shape in the mold is filled with resin, and one of the mold members is formed on a surface facing the holding portion, and the pair of width expansion portions of the holding portion is formed. It has a step portion on which a portion between the two is placed to separate the pair of width expansion portions from the facing surface, and the pair of width expansion portions and the one gold of the holding portion separated by the step portion. By filling the resin between the facing surface of the mold member, the pair of width expansion portions of the holding portion of the receptacle contact are both ends in the longitudinal direction of the holding portion and two standing portions. A second step of forming the housing integrally molded together with the first contact portion of the curved portion connected between the first contact portion and the elastic portion and the portion closer to the elastic portion .
Including at least
In the second step, the pair of width expansion portions are the first contact portion and the elasticity of a curved portion connected between both ends in the longitudinal direction of the holding portion and the first contact portion and the elastic portion . It is characterized in that the first contact portion and the elastic portion are covered by the housing on the lower surface side facing the substrate so that the first contact portion and the elastic portion cannot be visually recognized from the substrate side together with the portion closer to the portion .

In the above method for manufacturing a receptacle connector, the housing shape in the mold is formed in a state where the portion of the mold member moved from the direction in which the plug connector is fitted is pressed against the pair of width expansion portions of the receptacle contact. Fill the space to be formed with resin. Therefore, no trace is left on the housing when the receptacle contact is held by the mold, and it is possible to suppress the formation of a gap between the receptacle contact and the housing (between the holding portion and the housing). can. Therefore, it is possible to provide a method for manufacturing a receptacle connector capable of improving connection stability while suppressing deterioration in quality.

In the method for manufacturing a receptacle connector according to one aspect of the present invention, each of the width expansion portions has a width dimension of 0.03 mm or more and 0.12 mm or less.

In this way, by setting the width dimension of the width expansion portion to 0.03 mm or more and 0.12 mm or less, respectively, when the space forming the housing shape in the mold is filled with the resin, the portion of one of the mold members is formed. It is possible to prevent the receptacle connector from becoming large while suppressing damage to the pair of width expansion portions that are pressed against each other.

Further , in the method for manufacturing a receptacle connector according to the present invention, the one mold member is formed on a surface facing the holding portion, and a portion of the holding portion between the pair of width expansion portions is placed. It also has a stepped portion that separates the pair of width expansion portions from the facing surface.

Then, in the method for manufacturing a receptacle connector according to the present invention, in the second step, between the pair of width expansion portions of the holding portion separated by the step portion and the facing surface of the one mold member. Is filled with resin, so that the pair of width-expanded portions are continuously formed between both ends in the longitudinal direction of the holding portion and the first contact portion and the elastic portion, which are two standing portions. The housing integrally molded together with the first contact portion and the portion closer to the elastic portion is formed, and the pair of width expansion portions includes both ends in the longitudinal direction of the holding portion, the first contact portion, and the elastic portion. In addition to the first contact portion and the elastic portion side portion of the curved portion connected to and from the substrate side, the first contact portion and the elastic portion, which are two standing portions, are not visible from the substrate side at the time of mounting. , Covered by the housing on the lower surface side facing the substrate.

According to the present invention, since a gap is not formed between the receptacle contact and the housing, the solvent or the like applied to the connection portion does not get wet with the contact portion or the like, and the connection stability is improved while suppressing the deterioration of quality. It is possible to provide a receptacle connector and a method for manufacturing the receptacle connector.

It is an exploded perspective view for showing the schematic structure of the electric connector which consists of a receptacle connector and a plug connector which concerns on this embodiment. It is a perspective view which showed the receptacle connector of FIG. 1 from the bottom side. 3 (a) is a side view of the receptacle connector of FIG. 1, and FIG. 3 (b) is a cross-sectional view taken along the line I-I in FIG. 3 (a). It is a figure for showing the receptacle contact of the receptacle connector which concerns on this embodiment, FIG. 4 (a) is a perspective view which looked at the receptacle contact which concerns on this embodiment from one side, and FIG. 4 (b) is a perspective view. FIG. 4 (c) is a perspective view of the receptacle contact according to the present embodiment as viewed from the other side, and FIG. 4 (c) is a plan view of the receptacle contact according to the present embodiment. 5 (a) is a bottom view of the receptacle connector of FIG. 1, and FIG. 5 (b) is a sectional view taken along line II-II in FIG. 5 (a). It is a figure for showing the receptacle connector tab part which concerns on this embodiment, FIG. 6 (a) is a perspective view which looked at the receptacle connector tab part which concerns on this embodiment from one side, and FIG. 6 (b) is a perspective view. , Is a perspective view of the receptacle connector tab portion according to the present embodiment as viewed from the other side. It is a figure for showing the structure of the mold which concerns on this Embodiment, FIG. 7 (a) is a perspective view which shows one mold member which concerns on this Embodiment, and FIG. 7 (b) is a present embodiment. It is a perspective view which shows the other mold member which concerns on a form. FIG. 7 is a perspective view showing one of the mold members of FIG. 7A. 9A and 9B are perspective views for showing a state in which the other mold member according to the present embodiment is moved to a mold clamping position with one mold member, and FIG. 9A is the other mold according to the present embodiment. FIG. 9B is a perspective view showing a state in which the member is in contact with one of the mold members, and FIG. 9B shows a state in which the space forming the housing shape in the mold according to the present embodiment is filled with resin. It is a schematic cross-sectional view for. FIG. 9 is a perspective view showing the relationship between the other mold member and the receptacle contact in a state where the other mold member is moved to the mold clamping position with the one mold member (a part of the view). Receptacle contacts are not shown.)

Hereinafter, a method for manufacturing a receptacle connector according to an embodiment of the present invention will be described with reference to the drawings. The receptacle connector according to the present embodiment is a receptacle connector that is fitted with a plug connector to form an electric connector that connects substrates such as electric devices and electronic devices.

[1. Outline configuration of electrical connector]
First, the configuration of the electric connector 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a diagram for showing a schematic configuration of an electric connector 1 according to the present embodiment, and is an exploded perspective view of a plug connector 12 and a receptacle connector 14 constituting the electric connector 1.

As shown in FIG. 1, the electric connector 1 includes a plug connector 12 mounted on a board on one side and a receptacle connector 14 mounted on a board on the other side. The plug connector 12 and the receptacle connector 14 can be detachably fitted to each other, and the plug connector 12 and the receptacle connector 14 are mounted on a substrate and are mounted in the arrow A direction or the arrow B direction (fitting direction A or fitting). The two connectors 12 and 14 are fitted in the direction B) to electrically connect the substrates.

The plug connector 12 has a plug contact 21 formed in a substantially L shape by pressing a conductive metal such as Corson alloy, beryllium copper, or phosphor bronze, and a housing in which the plug contact 21 is held and arranged, which will be described later. It includes a block 25 into which the 45 is fitted, and plug-side tab portions 27 arranged on both ends of the electrical connector 1 in the longitudinal direction X.

The plug contact 21 includes a plug-side first contact portion 211 and a plug-side second contact portion 212 that can contact the receptacle contact 41 described later, a plug-side connection portion 213 connected to a board on one side, and a plug-side first contact portion 213. It has a plug-side curved portion 214 that is curved between the contact portion 211 and the plug-side second contact portion 212.

The block 25 is made of electrically insulating plastic, and a pair of block edge portions 26a and 26b which are both edge portions extending in the longitudinal direction X are formed. The pair of block edge portions 26a and 26b are held and arranged on the block edge portion 26a or the block edge portion 26b so that the plug-side first contact portion 211 of the plug contact 21 faces each other. Further, the block edge portion 26a and the block edge portion 26b are curved, and the curved portion coincides with the plug-side curved portion 214 and is continuous along the longitudinal direction X.

Further, the block 25 is continuous along the longitudinal direction X between the pair of block edge portions 26a and 26b, that is, between the plug-side first contact portions 211 held and arranged on the block edge portion 26a or the block edge portion 26b. A block-side fitting port 251 having a concave shape is formed. The block-side fitting port 251 is formed so that a receptacle-side fitting convex portion 453 of the housing 45, which will be described later, can be inserted. The plug-side tab portion 27 is formed with a one-side board connecting portion 271 that can be connected to the one-side substrate.

As shown in FIGS. 1 and 2A, the receptacle connector 14 includes a receptacle contact 41 formed by pressing a conductive metal such as a Corson alloy, beryllium copper, or phosphor bronze, and a receptacle contact 41. It includes a housing 45 that is held and arranged and into which a plug connector 12 is fitted, and a receptacle-side tab portion 47 that is arranged on both ends in the longitudinal direction X and soldered to a substrate on the other side.

The housing 45 is formed by injection molding an electrically insulating plastic such as polybutylene terephthalate (PBT), polyamide (66PA, 46PA), liquid crystal polymer (LCP), polycarbonate (PC), and synthetic materials thereof. .. The housing 45 is formed with a pair of housing edge portions 46a and 46b, which are both edge portions extending in the longitudinal direction X. Receptacle contacts 41 are held and arranged in the pair of housing edges 46a and 46b. Further, the housing edge portion 46a and the housing edge portion 46b are curved, and the curved portion coincides with the second curved portion 433 described later and is continuous along the longitudinal direction X.

As shown in FIG. 1, the housing 45 includes a holding hole 451 for holding the receptacle contact 41, a receptacle-side fitting recesses 452a and 452b which are recessed in the fitting direction B side, a housing edge portion 46a, and a housing. It has a receptacle-side fitting convex portion 453 having a substantially convex shape continuously along the longitudinal direction X with the edge portion 46b, and a tab insertion hole 454 arranged on one and the other of the longitudinal direction X.

The holding hole 451 is formed in a shape capable of allowing elastic deformation of the receptacle-side first contact portion 411 in the width direction Y of the housing 45 when the receptacle-side first contact portion 411 described later is elastically deformed. There is.

The receptacle-side fitting recesses 452a and 452b have a concave shape substantially similar to the concave shape formed by the receptacle-side first contact portion 411 and the receptacle-side second contact portion 412, which will be described later. Then, the housing 45 is formed with housing recesses 462a, 462b continuously extending in the longitudinal direction X by the receptacle-side fitting recesses 452a, 452b, the receptacle-side first contact portion 411, and the receptacle-side second contact portion 412. Will be done.

The receptacle-side fitting convex portion 453 is formed so that the above-mentioned block-side fitting port 251 can be inserted. Further, the tab insertion hole 454 is formed so that the above-mentioned plug-side tab portion 27 can be inserted.

[2. Receptacle contact configuration]
Next, the configuration of the receptacle contact 41 will be described with reference to FIGS. 3 (b), 4 and 5 (b). 3 (b) is a cross-sectional view taken along the line I-I in FIG. 3 (a), and FIG. 4 is a diagram for showing the receptacle contact 41 of the receptacle connector 14 according to the present embodiment. 4 (a) is a perspective view of the receptacle contact 41 as viewed from one side, FIG. 4 (b) is a perspective view of the receptacle contact 41 as viewed from the other side, and FIG. 4 (c) is a perspective view of the receptacle contact. 41 is a plan view of 41 as viewed from the side of the second erection portion 418, and FIG. 5 (b) is a cross-sectional view taken along line II-II in FIG. 5 (a).

As shown in FIGS. 3 (b), 4 (a) and 4 (b), the receptacle contact 41 has a receptacle-side first contact portion 411 that contacts the plug-side first contact portion 211 and a plug-side second contact portion 411. It has a receptacle-side second contact portion 412 that comes into contact with the contact portion 212, and a receptacle-side connection portion 413 that is connected to a substrate on the other side.

Further, the receptacle contact 41 has an elastic portion 414 that is erected from the receptacle side connection portion 413 and curved at least once, and a holding portion 415 that is horizontally arranged in a flat plate shape from the elastic portion 414. 1 The contact portion 411 extends from the holding portion 415.

More specifically, the elastic portion 414 includes a first curved portion 431 curved from the receptacle side connecting portion 413, a first standing portion 432 extending to the facing side of the holding portion 415, and a first standing portion 432. It has a second curved portion 433 curved between the second contact portion 412 on the receptacle side.

Further, the receptacle contact 41 faces the third curved portion 416 curved between the second contact portion 412 and the holding portion 415 on the receptacle side, the fourth curved portion 417 curved from the holding portion 415, and the holding portion 415. It has a second upright portion 418 extending to the side and a fifth curved portion 419 curved from the second upright portion 418. That is, the receptacle contact 41 is formed so as to be elastically deformable by being curved at five points between the receptacle-side first contact portion 411 and the receptacle-side connecting portion 413.

Further, the receptacle contact 41 has a receptacle-side first contact portion 411, a fifth curved portion 419, a second standing portion 418, and a fourth curved portion between the receptacle-side first contact portion 411 and the receptacle-side connecting portion 413. 417, holding portion 415, third curved portion 416, receptacle side second contact portion 412, second curved portion 433, first standing portion 432, first curved portion 431, and receptacle side connecting portion 413 are arranged in this order. ..

The receptacle-side first contact portion 411 is formed with a narrow portion 511 having a width narrower than that of the fifth curved portion 419. When the plug contact 21 and the receptacle contact 41 are brought into contact with each other, the narrow portion 511 makes it easy to insert the plug-side curved portion 214 between the receptacle-side first contact portion 411 and the receptacle-side second contact portion 412. Further, the width of the receptacle-side first contact portion 411 is formed to be narrower than that of the fifth curved portion 419 so that the receptacle-side first contact portion 411 is elastically deformed to facilitate contact with the plug-side first contact portion 211.

Further, the receptacle-side second contact portion 412 is provided with a protrusion 441 protruding toward the receptacle-side first contact portion 411. The protruding portion 441 is formed so that the first contact portion 211 on the plug side can be contacted.

Further, the holding portion 415 has a pair of width expanding portions 442, which are both end portions in the width direction, protruding outward from the positions of both side edges of the receptacle-side first contact portion 411. Specifically, as shown in FIG. 4C, the width W1 of the holding portion 415 by the pair of width expanding portions 442 is the receptacle side first contact portion 411, the fifth curved portion 419, and the second erecting portion 418. The width W3 of the width expansion portion 442 is formed to be wider than the width W2, and the dimensions of the width W3 are, for example, 0.03 mm or more and 0.12 mm or less, respectively. When the width dimension W3 is smaller than 0.03 mm, when the resin filling portion 656 is filled with the resin, the pair of width expanding portions 442 to which the width expanding portion abutting portion 655 of the movable mold member 651, which will be described later, is pressed and abutted is damaged. This is because if the width dimension W3 exceeds 0.12 mm, the size of the receptacle connector 14 becomes large. As shown in FIG. 5B, both ends in the width direction of the holding portion 415 are covered by the housing 45 on the lower surface side facing the substrate at the time of mounting. The central portion between both ends of the holding portion 415 in the width direction is exposed to the outside.

In the present embodiment, the above-mentioned receptacle contact 41 has a fourth curved portion 417, a holding portion 415, and a third with respect to the receptacle-side first contact portion 411, the fifth curved portion 419, and the second standing portion 418. The case where the width of the curved portion 416, the receptacle side second contact portion 412, the second curved portion 433, the first standing portion 432, the first curved portion 431, and the receptacle side connecting portion 413 is wider is illustrated. I explained, but it is not limited to this. That is, the width of the receptacle contact 41 may be another shape as long as the width dimension of the holding portion 415 including the pair of width expansion portions 442 is larger than the width dimension of the first contact portion 411 on the receptacle side.

[3. Receptacle side tab configuration]
Next, the configuration of the receptacle side tab portion 47 will be described with reference to FIG. FIG. 6 is a diagram for showing the receptacle side tab portions 47 located at both ends of the receptacle connector 14 according to the present embodiment, and FIG. 6A is a perspective view of the receptacle side tab portion 47 as viewed from one side. FIG. 6B is a perspective view of the receptacle side tab portion 47 as viewed from the other side.

The receptacle side tab portion 47 is formed by pressing a conductive metal such as Corson alloy, beryllium copper, or phosphor bronze, like the receptacle connector 14, and is integrally molded together with the receptacle contact 41. (See FIG. 1).

As shown in FIGS. 6A and 6B, the receptacle side tab portion 47 has a tab upper surface portion 471a located on the upper surface side of the receptacle connector 14 and a tab side surface portion located on both side surfaces of the receptacle connector 14. It has 417b and 471c, and tab protrusions 471d located at both ends in the longitudinal direction X (see FIG. 1) and protruding substantially at right angles from the tab upper surface portion 471a.

The receptacle-side tab portion 47 may be formed so as to be in contact with the plug-side tab portion 27. Further, the receptacle connector 14 and the plug connector 12 may be electrically connected by coming into contact with the tab portion 27 on the plug side.

[4. Mold configuration]
Next, with reference to FIGS. 7 to 10, a mold 16 that abuts on the width expansion portion 442 and is filled with resin to form the housing 45 will be described. FIG. 7 is a diagram for showing the configuration of the mold 16 according to the present embodiment, and FIG. 7A shows a receptacle contact of a fixed mold member 611, which is one of the mold members constituting the mold 16. FIG. 7B is a perspective view showing a state in which 41 is held, and FIG. 7B is a perspective view showing a movable mold member 651 which is the other mold member constituting the mold 16. FIG. 8 is a perspective view showing the fixed mold member 611 of FIG. 7A. FIG. 9 is a perspective view for showing a state in which the movable mold member 651 according to the present embodiment is moved to a mold clamping position with the fixed mold member 611, and FIG. 9A is a perspective view showing the movable mold member 651. 9 is a perspective view showing a state in which is in contact with the fixed mold member 611, and FIG. 9B is a schematic cross-sectional view for showing a state in which the resin filling portion 656 of the movable mold member 651 is filled with resin. be. FIG. 10 is a perspective view showing the relationship between the movable mold member 651 and the receptacle contact 41 in a state where the movable mold member 651 is moved to the mold clamping position with the fixed mold member 611.

In this embodiment, the mold 16 is referred to as a movable mold member 651 and a fixed mold member 611 on the premise that the mold 16 is a vertical molding machine. In other words, the expression "movable" and "fixed" is used to refer to those who move and those who do not. In this case (vertical type), an ejector pin (not shown) is mounted on the fixed mold member 611 side. On the other hand, considering the horizontal molding machine, the movable and fixed parts are reversed, and the ejector pin is mounted on the movable mold member side. In the following description, a case where one mold member is a fixed mold member 611 and the other mold member is a movable mold member 651 will be described, but of course, one mold member will be described. May be a horizontal die forming machine in which is a movable mold member and the other mold member is a fixed mold member.

Note that FIGS. 7, 9 and 10 show a mold 16 that abuts on the width expansion portion 442 of a part of the receptacle contact 41 for convenience of illustration, but the mold 16 is integrally molded with the housing 45. It is assumed that it has a shape capable of contacting the width expansion portion 442 of all the receptacle contacts 41 to be formed. That is, in FIGS. 7, 9 and 10, a part of the receptacle contact 41 and a part of the mold 16 are shown, and the other parts are omitted. Further, what is held and arranged in the mold 16 in FIGS. 7, 9 and 10 is a portion corresponding to the receptacle contact 41 (receptacle contact corresponding portion) in the manufacturing process, but in the following, it is referred to as a receptacle contact 41. explain.

As shown in FIGS. 7 and 9, the mold 16 has a direction in which the fixed mold member (one mold member) 611 on which the receptacle contact 41 is arranged and the plug connector 12 are fitted (FIG. 9 (a)). It also has a movable mold member (the other mold member) 651 that can be moved from the fitting direction B) in FIG. 9B) to the mold clamping position with the fixed mold member 611.

As shown in FIGS. 7A and 8, the fixed mold member 611 has a fixed-side main body 612 fixed to the device side (not shown) for manufacturing the receptacle connector 14, and a receptacle-side connecting portion 413. The first holding hole 613 on the fixed side into which the mold is inserted, the stepped portion 614 on which the lower surface of the holding portion 415 is placed, and the mold contact portion 615 that abuts on the movable mold member 651 that has moved to the mold clamping position. It is formed. The step portion 614 separates the pair of width expansion portions 442 of the holding portion 415 from the facing surface of the fixed mold member 611 in a state where the holding portion 415 of the receptacle contact 41 is placed.

As shown in FIG. 7B, the movable mold member 651 includes a movable side main body 652 that can be moved with respect to the fixed mold member 611, an elastic portion insertion hole 653 into which the elastic portion 414 can be inserted, and a fifth. A curved portion insertion hole 654 into which a curved portion 419 can be inserted, a width expansion portion contact portion 655 that is a portion of the movable mold member 651 and presses and abuts against a pair of width expansion portions 442, and resin filling with resin. It has a portion 656 (a space forming the shape of the housing 45).

Then, as shown in FIGS. 9 (a) and 9 (b), the fixed mold member 611 and the movable mold member 651 are shown in the mold clamping positions (FIGS. 9 (a) and 9 (b)). The housing 45 can be formed by sandwiching the receptacle contact 41 from the vertical direction (the direction opposite to the fitting direction B and the fitting direction B) and filling the resin filling portion 656 with the resin at the position). are doing. At this time, as shown in FIG. 10, the width expansion portion contact portion 655 of the movable mold member 651 abuts on the width expansion portion 442 of the holding portion 415 of the receptacle contact 41.

[5. Manufacturing method of receptacle connector]
Next, the manufacturing method of the receptacle connector 14 described above will be described. In the method of manufacturing the receptacle connector 14 according to the present embodiment, the first step of forming the receptacle contact 41 having a predetermined shape by deforming the plate-shaped member and the resin filling portion 656 of the mold 16 are filled with resin. Thereby, at least the second step of forming the housing in which the receptacle contact 41 is integrally molded is performed. The first step of forming the plate-shaped member into a predetermined shape is a punching process for punching out a portion corresponding to the receptacle contact 41 from the plate-shaped member, and a bending process for bending the plate-shaped member to form a portion corresponding to the receptacle contact 41. This is a step of forming the receptacle contact 41 by processing at least one of the above.

First, a portion corresponding to the receptacle connector is formed by a metal strip as a base material for forming the receptacle contact 41. More specifically, the receptacle connector corresponding portion for forming the above-mentioned receptacle contact 41 by sandwiching one end of each of the two metal strips with a mold from above and below and deforming the metal strips is provided. Form (first step).

Next, the receptacle connector corresponding portions formed on the two metal strips are held in the fixed mold member 611 in a state where they are close to each other and face each other. More specifically, a portion corresponding to the receptacle side connection portion 413 is inserted into the first holding hole 613 on the fixed side, and a portion corresponding to the holding portion 415 is placed on the step portion 614 (see FIG. 7A). ).

Next, the movable mold member 651 is moved to the mold clamping position (position shown in FIGS. 9A and 9B) with respect to the fixed mold member 611. When the movable mold member 651 is moved to the mold clamping position, the portion corresponding to the width expansion portion 442 presses and contacts the width expansion portion contact portion 655. As mentioned above, the receptacle contact 41 has a pair of width expansion portions 442. Therefore, the portion corresponding to the pair of width expansion portions 442 from the fitting direction B can be pressed by the width expansion portion contact portion 655.

Further, when the movable mold member 651 is moved to the mold clamping position, the mold contact portion 615 comes into contact with the movable side main body 652. Then, a portion corresponding to the elastic portion 414 is inserted into the elastic portion insertion hole 653 of the movable mold member 651, and a portion corresponding to the fifth curved portion 419 is inserted into the curved portion insertion hole 654. Although not shown, the receptacle-side tabs 47 are also held by the mold 16 at both ends in the longitudinal direction X (see FIG. 1).

Next, the resin filling portion 656 is filled with resin in a state where the width expansion portion contact portion 655 is in pressure contact, so that the housing 45 is integrally formed with a portion corresponding to the receptacle contact 41 on the housing edges 46a and 46b. (2nd step). Specifically, in the portion corresponding to the holding portion 415 of the receptacle contact 41, the holding portion 415 is placed on the step portion 614 of the fixed mold member 611, and the width expanding portion 442 of the holding portion 415 and the fixed mold are mounted. Since the gap g (see FIG. 7A) between the member 611 and the facing surface is filled with resin, the width expansion portions 442, which are both ends in the width direction of the holding portion 415, are covered with the resin constituting the housing 45. Will be.

When the resin filling portion 656 is filled with resin, the receptacle side tab portions 47 are integrally molded with the housing 45 at both ends in the longitudinal direction X (see FIG. 1) together with the portion corresponding to the receptacle contact 41.

Further, the housing 45 is formed with a holding hole 451 in which the receptacle contact 41 is held. This holding hole 451 allows elastic deformation in the width direction Y (see FIG. 1) of the housing 45 when the plug connector 12 and the receptacle connector 14 are fitted and the first contact portion 411 on the receptacle side is elastically deformed. Can be formed.

Further, the housing 45 is formed with the receptacle-side fitting recesses 452a and 452b, the receptacle-side fitting protrusion 453, and the tab insertion hole 454. The receptacle-side fitting recesses 452a and 452b are formed in a concave shape substantially similar to the concave shape formed by the receptacle-side first contact portion 411 and the receptacle-side second contact portion 412. As a result, the housing recesses 462a, 462b extending in the longitudinal direction X along the housing edges 46a, 46b by the receptacle-side fitting recesses 452a, 452b, the receptacle-side first contact portion 411, and the receptacle-side second contact portion 412. Is formed.

After that, by cutting the portion corresponding to the receptacle connector and separating it from the metal strip other than the portion corresponding to the receptacle connector, a plurality of receptacle contacts 41 are integrally formed on the housing edges 46a and 46b and held and arranged in the housing 45. The connector 14 is manufactured.

[6. Fitting of plug connector and receptacle connector]
Next, the fitting of the plug connector 12 and the receptacle connector 14 will be described. Although the figure showing the fitted state of the plug connector 12 and the receptacle connector 14 is omitted, the above-mentioned receptacle connector 14 can be fitted with the plug connector 12 as described below. In the plug connector 12 described above, the one-side board connection portion 271 is soldered to the one-side board (not shown), and the receptacle connector 14 has tab side surface portions 471b, 471c and tab protrusions 471d at the ends. Soldered to a board on the other side (not shown). Then, the plug connector 12 and the receptacle connector 14 are fitted by fitting the plug connector 12 and the receptacle connector 14 from the fitting direction A or the fitting direction B (see FIG. 1).

When the above-mentioned plug connector 12 and the receptacle connector 14 are fitted, the block edge portion 26a is inserted into the receptacle side fitting recess 452a, the block edge portion 26b is inserted into the receptacle side fitting recess 452b, and the receptacle side fitting protrusion is inserted. The portion 453 is inserted into the block-side fitting port 251.

When the block edge portions 26a and 26b are inserted into the receptacle-side fitting recesses 452a and 452b, the plug contact 21 and the receptacle contact 41 come into contact with each other. More specifically, the elastic deformation of the receptacle-side first contact portion 411 increases the distance from the receptacle-side second contact portion 412, and between the receptacle-side first contact portion 411 and the receptacle-side second contact portion 412. The plug-side curved portion 214 is inserted into the. Then, the plug-side curved portion 214 is inserted to a contact position where the receptacle-side first contact portion 411 contacts the plug-side first contact portion 211 and the receptacle-side second contact portion 412 contacts the plug-side second contact portion 212. Will be done. When the plug-side curved portion 214 is inserted to the contact position, the protruding portion 441 comes into contact with the plug-side second contact portion 212 to prevent the plug contact 21 from coming off from the receptacle contact 41.

Further, the tab insertion hole 454 may be formed so as to be inserted into the plug side tab portion 27. Further, by inserting the plug side tab portion 27, the plug side tab portion 27 and the receptacle side tab portion 47 may be electrically connected. The plug-side tab portion 27 and the receptacle-side tab portion 47 may be simply soldered to the substrate on the other side without making an electrical connection with the plug connector 12.

As described above, the plug contact 21 and the receptacle contact 41 are brought into contact with each other by fitting the plug connector 12 and the receptacle connector 14, and the substrate on one side on which the plug connector 12 is mounted and the receptacle connector 14 are mounted. It becomes possible to electrically connect to the substrate on the other side.

[7. Action effect]
The method for manufacturing the receptacle connector 14 as described above includes a contact portion (first contact portion 411 on the receptacle side, second contact portion 412 on the receptacle side) in contact with the plug contact 21 of the plug connector 12, and a connection portion (connecting portion 412 mounted on the substrate). A method of manufacturing a receptacle connector 14 comprising a plurality of receptacle contacts 41 having a receptacle side connection portion 413) and a housing 45 in which the receptacle contacts are held and arranged and into which a plug connector 12 is fitted. A receptacle having an elastic portion 414 that is erected from the connection portion and curved at least once, a holding portion 415 that is horizontally arranged in a flat plate shape from the elastic portion 414, and a contact portion that extends from the holding portion 415. The first step of forming the contact 41 into a predetermined shape and the receptacle contact 41 having a predetermined shape are formed by one mold member (fixed mold member 611) and the other mold member (movable mold member 651). ) Is placed on one of the mold members constituting the mold 16, and the plug connector 12 is fitted to the pair of width expansion portions 442 of the holding portions 415 protruding outward from the positions of both side edges of the contact portions. The mold is in a state where the portion of the other mold member (width expansion portion contact portion 655) that has been moved from the direction (fitting direction B) to the mold clamping position with one mold member is in pressure contact. The second step of forming the housing 45 in which the width expansion portion 442 of the holding portion 415 of the receptacle contact 41 is integrally molded by filling the space (resin filling portion 656) that forms the housing shape inside. At least include.

According to the method for manufacturing the receptacle connector 14 described above, the width expansion portion contact portion 655 of the movable mold member 651 moved from the fitting direction B is pressed against the pair of width expansion portions 442 of the receptacle contact 41. In this state, the resin filling portion 656 is filled with resin. Therefore, the trace when the receptacle contact 41 is held by the mold 16 (for example, the trace of being pinched from the width direction of the receptacle contact) does not remain in the housing. Further, in order to fill the pair of width expansion portions 442 with the resin in a state where the width expansion portion contact portion 655 is in pressure contact with each other, the resin is filled between the receptacle contact 41 and the housing 45 (between the holding portion 415 and the housing 45). It is possible to suppress the formation of gaps. Therefore, when a solvent for preventing corrosion of the substrate is applied to the receptacle side connection portion 413, the applied solvent does not get wet to the receptacle side first contact portion 411 and the receptacle side second contact portion 412. Therefore, it is possible to provide a method for manufacturing a receptacle connector 14 that can improve connection stability while suppressing deterioration in quality.

Further, it is preferable that each of the width expansion portions 442 has a width dimension of 0.03 mm or more and 0.12 mm or less. If the width dimension W3 is smaller than 0.03 mm, when the resin filling portion 656 is filled with resin, the pair of width expansion portions 442 to which the width expansion portion contact portion 655 is pressed and abutted may be damaged, and the width dimension W3 This is because if the size exceeds 0.12 mm, the size of the receptacle connector 14 becomes large.

Further, the receptacle side second contact portion 412 is provided with a protrusion 441 protruding toward the receptacle side first contact portion 411. Therefore, when the plug-side curved portion 214 of the plug contact 21 is inserted between the receptacle-side first contact portion 411 and the receptacle-side second contact portion 412, the protruding portion 441 hits the plug-side first contact portion 211. The contact can prevent the plug contact 21 from coming off the receptacle contact 41.

Further, in the receptacle connector 14 of the embodiment, both ends in the width direction of the holding portion 415 of the receptacle contact 41 are covered by the housing 45 on the lower surface side facing the substrate at the time of mounting. Therefore, in order to prevent corrosion of the substrate, when a solvent such as conformal coating is applied to the receptacle side connection portion 413, the solvent applied to the receptacle side connection portion 413 is applied to the receptacle side first contact portion 411 and the receptacle side. It is possible to prevent a situation in which the second contact portion 412 gets wet and a connection failure between the substrates occurs when the plug connector 12 is fitted. Therefore, according to the receptacle connector 14 of the embodiment, it is possible to improve the connection stability while suppressing the deterioration of the quality.

1 Electrical connector 12 Plug connector 14 Receptacle connector 16 Mold 21 Plug contact 25 Block 41 Receptacle contact 45 Housing 46a, 46b Housing edge 47 Receptacle side Tab part 211 Plug side 1st contact part 212 Plug side 2nd contact part 213 Plug side Connection part 251 Block side fitting port 411 Receptacle side 1st contact part 412 Receptacle side 2nd contact part 413 Receptacle side connection part 414 Elastic part 415 Holding part 416 3rd curved part 417 4th curved part 418 2nd standing part 419 5 Curved part 431 1st curved part 432 1st standing part 433 2nd curved part 441 Protruding part 442 Width expansion part 452a Receptacle side fitting recess 452b Receptacle side fitting recess 453 Receptacle side fitting convex part 454 Tab insertion hole 611 Fixed mold member 612 Fixed side main body 613 Fixed side first holding hole 614 Step part 615 Mold contact part 651 Movable mold member 652 Movable side main body 653 Elastic part insertion hole 654 Curved part insertion hole 655 Width expansion part Contact part 656 resin filling part

Claims (5)

A plurality of receptacle contacts having a first contact portion and a second contact portion in contact with the plug contact of the plug connector, and a connection portion mounted on a substrate, the receptacle contacts are held and arranged, and the plug connector is fitted. A receptacle connector with a housing,
The receptacle contact is an elastic portion that is erected from the connection portion and has the second contact portion, a holding portion that is laid horizontally from the elastic portion in a flat plate shape, and the first contact that is erected from the holding portion. With a part,
The first contact portion of a curved portion connected to both ends in the width direction of the holding portion, both ends in the longitudinal direction of the holding portion, and the first contact portion and the elastic portion, which are two standing portions. The portion closer to the elastic portion is covered with the housing on the lower surface side facing the substrate so that the first contact portion and the elastic portion cannot be visually recognized from the substrate side at the time of mounting, and the portion of the holding portion. A receptacle connector characterized in that the central portion in the width direction is exposed on the lower surface side . The receptacle connector according to claim 1, wherein both ends of the holding portion in the width direction are a pair of width-extending portions protruding outward from both side edge positions of the contact portion. The receptacle connector according to claim 1 or 2, wherein both ends of the holding portion in the width direction have a width dimension of 0.03 mm or more and 0.12 mm or less, respectively. A plurality of receptacle contacts having a first contact portion and a second contact portion in contact with the plug contact of the plug connector, and a connection portion mounted on a substrate, the receptacle contacts are held and arranged, and the plug connector is fitted. A method of manufacturing a receptacle connector with a housing.
From the plate-shaped member, the connecting portion, an elastic portion that is erected from the connecting portion and curved at least once and has the second contact portion, and a flat plate-shaped holding from the elastic portion. A first step of forming the receptacle contact having a predetermined shape having the portion and the first contact portion erected from the holding portion.
The receptacle contact having the predetermined shape is arranged on the one mold member of the mold composed of one mold member and the other mold member, and is located outside the positions of both side edges of the first contact portion. Pressing contact from the direction in which the plug connector is fitted at the portion of the other mold member in which the pair of width expansion portions of the overhanging holding portion is moved to the mold clamping position with the one mold member. In this state, the space forming the housing shape in the mold is filled with resin, and one of the mold members is formed on a surface facing the holding portion, and the pair of width expansion portions of the holding portion is formed. It has a step portion on which a portion between the two is placed to separate the pair of width expansion portions from the facing surface, and the pair of width expansion portions and the one gold of the holding portion separated by the step portion. By filling the resin between the facing surface of the mold member, the pair of width expansion portions of the holding portion of the receptacle contact are both ends in the longitudinal direction of the holding portion and two standing portions. A second step of forming the housing integrally molded together with the first contact portion of the curved portion connected between the first contact portion and the elastic portion and the portion closer to the elastic portion .
Including at least
In the second step, the pair of width expansion portions are the first contact portion and the elasticity of a curved portion connected between both ends in the longitudinal direction of the holding portion and the first contact portion and the elastic portion . A method for manufacturing a receptacle connector, characterized in that the first contact portion and the elastic portion are covered with the housing on the lower surface side facing the substrate so that the first contact portion and the elastic portion cannot be visually recognized from the substrate side together with the portion closer to the portion . .. The method for manufacturing a receptacle connector according to claim 4, wherein each of the width expansion portions has a width dimension of 0.03 mm or more and 0.12 mm or less.

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