JP5509915B2 - Electrical connector and molding method thereof - Google Patents

Description

  The present invention relates to an electrical connector in which a terminal that is electrically connected to a mating connector is attached to a flat surface and a bottom surface of a support plate and a molding method thereof, and more particularly, insert molding of terminals on both the flat surface and the bottom surface of a support plate. The present invention relates to an electrical connector and a molding method thereof.

  Conventionally, multiple terminals are integrally formed by insert molding on a tongue-like support plate that protrudes in the direction of mating with the mating connector from the insulating housing body, and multiple terminals are fitted on the plane of the support plate. An electrical connector that is insulated from each other along a direction is known (Patent Document 1).

  FIG. 12 shows this conventional electrical connector 100. The bottom surface (in the figure) of the support plate 102 that protrudes horizontally from the insulating housing body 101 in the direction of connection with the mating connector (right side in the figure). A plurality of terminals 103, 103,... Are insulated from each other along the connecting direction.

  The electrical connector 100 configured as described above is formed by punching and forming a hoop material in which a plurality of terminals 103, 103,... The hoop material is arranged along the inner surface of the core of the injection mold, the terminal 103 is sandwiched between the pressing pin protruding from the cavity side and the inner surface of the core in the mold, and the carriers on both sides of the terminal 103 are It is sandwiched and positioned by an injection mold, and an insulating resin is poured into the injection mold to perform injection molding. Since the core inner surface forms the bottom surface side of the support plate 102, a plurality of terminals 103, 103,... Are integrally formed along the connection direction on the bottom surface of the support plate 102 formed by injection molding.

  Thereafter, the carrier of the hoop material protruding from the front and rear along the connecting direction of the insulating housing is cut to form the electrical connector 100 in which the plurality of terminals 103, 103,. The leg portion 103a of the terminal 103 protruding from the rear (left side in the figure) of the insulating housing body 101 faces a predetermined land pattern and is soldered when the electrical connector 100 is mounted on a printed wiring board (not shown). Thus, the land pattern is electrically connected. In the figure, reference numeral 104 denotes a punching hole of a pressing pin used for positioning at the time of injection molding.

JP 2009-26745 A (page 4, FIG. 2, FIG. 5)

  On the other hand, this type of electrical connector has a contradictory demand of downsizing and multipolarization in which more terminals are arranged, and a plurality of terminals 103 are attached to both the flat and bottom surfaces of the support plate 102 and The pitch between the terminals 103 and 103 was narrowed to meet these requirements.

  However, in order to insert-mold the terminals 103 on both sides of the support plate 102, the pressing pins protrude from the other side of the inner surface of the mold where the terminals 103 are arranged. The terminal 103 attached to one or both surfaces of the terminal 103 is conventionally attached by an assembly process such as press-fitting into the attachment groove of the support plate 102.

  When installing terminals in this way, some terminals will float without being completely inserted into the mounting groove, the contact position with the mating connector will be different, and the timing of contact will be shifted. Since the terminals 103, 103,... Protruding from the rear side of 101 can not be aligned on one side so as to be parallel to the plane of the printed wiring board on which the terminals are mounted, some floating terminals 103 can be soldered to the land pattern. It was a cause of poor connection.

  Further, when the terminals 103 are insert-molded, each terminal 103 is simply sandwiched and positioned in the vertical direction (thickness direction of the support plate) in the mold, so that the flow pressure of the insulating resin during injection molding Therefore, it is easy to move in the horizontal direction (the direction along the inner surface of the mold), and there is a fear that the adjacent terminals 103 and 103 are molded while being in contact with each other. This problem is particularly likely to occur when the pitch between the adjacent terminals 103 and 103 becomes narrow. Therefore, like the conventional electrical connector 100, the carrier of the hoop material connected to the front and rear of the terminal 103 is left. It is positioned in the mold while preventing it from moving in the horizontal direction. However, for that purpose, the connecting portion between the terminal 103 and the carrier is exposed at the front end of the injection-molded support plate, and it is inadvertently in contact with the mating connector or external conductor, or electrostatic noise enters. This was the cause of insulation failure.

  The present invention has been made in view of such conventional problems, and provides an electrical connector for integrally molding a plurality of terminals by insert molding on both the flat surface and the bottom surface of a support plate, and a molding method therefor. With the goal.

  It is another object of the present invention to provide an electrical connector in which adjacent terminals do not come into contact with each other even when subjected to molding pressure without exposing the terminals to the end face in the connecting direction of the support plate.

In order to achieve the above-described object, an electrical connector according to claim 1 includes a support plate integrally projecting from the insulating housing body in the connection direction with the mating connector, and a plane of the support plate along the connection direction. An upper die and a bottom surface, which are provided with a plurality of flat-side terminals that are insulated from each other and a plurality of bottom-side terminals that are insulated from each other along the connecting direction on the bottom surface of the support plate. An electrical connector in which a plurality of flat-side terminals and a plurality of bottom-side terminals are positioned along an upper mold and a lower mold, respectively, and are insert-molded integrally with a support plate in a cavity formed from a lower mold forming a side a is a plurality of each plane side terminals, the second pressing pins on both sides of the second pressing pins are installed vertically from the site of the upper mold side slightly above Is positioned along the upper die in spaced regular pitch intervals wide, while being held between the first holding pin extending upright from the site of the upper mold and the lower mold side, a plurality of the bottom side terminal, Positioned along the lower die at equal pitches on both sides of the first presser pin with an interval slightly wider than the first presser pin, and sandwiched between the lower die and the second presser pin, A plurality of bottom side terminals are positioned in the cavity.

  Adjacent plane-side terminals or bottom-side terminals are attached with an insulating interval parallel to the plane or bottom surface of the support plate. Accordingly, the second pressing pin protrudes from the insulating interval between the plane side terminals adjacent along the upper die in the cavity, and the first pressing pin protrudes from the insulating interval between the bottom surface side terminals adjacent along the lower die. Can position a plurality of plane-side terminals and a plurality of bottom-side terminals within the cavity without interfering with the plane-side terminal and the bottom-side terminal, respectively. Molded.

  A direction along the inner surface of the mold at the time of injection molding, with the second pressing pin interposed between the adjacent flat side terminals and the first pressing pin between the adjacent bottom side terminals while being positioned in the cavity. Adjacent terminals do not come into contact with each other even when subjected to the fluid pressure.

According to another aspect of the present invention, there is provided the electrical connector according to the second aspect of the present invention , wherein the support plate is integrally protruded from the insulating housing main body in the connection direction with the mating connector, and is insulated from each other along the connection direction on the plane of the support plate. A plurality of flat-side terminals and a plurality of bottom-side terminals that are attached to the bottom surface of the support plate along the connecting direction so as to be insulated from each other, and an upper mold that forms the flat side of the support plate and a lower mold that forms the bottom side An electrical connector in which a plurality of plane side terminals and a plurality of bottom side terminals are positioned along the upper die and the lower die, respectively, and are insert-molded integrally with the support plate in the cavity formed from The side terminal is sandwiched between the upper die and the first pressing pin erected from the lower die side portion that does not interfere with the bottom side terminal. Each bottom side terminal is sandwiched between a lower mold and a second pressing pin suspended from the upper mold side part that does not interfere with the plane side terminal, and the plurality of plane side terminals and the plurality of bottom side terminals are cavities And at least a part of the plurality of plane-side terminals and the plurality of bottom-side terminals are attached to two or more planes or bottom surfaces having different heights separated by a step portion of the support plate .

  Even if the flat surface or bottom surface of the support plate is separated by a step portion, the pressing pin can be protruded from a portion that does not interfere with the terminal attached to the other surface, and the flat surface or bottom surface of different heights separated by the step portion. In addition, it is possible to insert-mold the flat terminal or the bottom terminal, respectively.

Further, in the electrical connector according to claim 3 , the leg portion of the plane side terminal or the leg portion of the bottom side terminal is sandwiched between the upper mold and the lower mold at the time of insert molding, and is parallel to one plane from the insulating housing. It is characterized by protruding.

  The leg part of the plane side terminal or the leg part of the bottom side terminal can be sandwiched between the upper mold and the lower mold for forming the insulating housing. The legs project from the insulating housing in an aligned horizontal plane.

According to a fourth aspect of the present invention, there is provided a method for forming an electrical connector comprising: an upper mold that forms a flat surface side of a support plate that is integrally projected in a connecting direction from an insulating housing body to a mating connector; In the cavity formed by the combination of the mold, a plurality of plane side terminals are positioned along the upper mold parallel to the connection direction, and a plurality of bottom side terminals are positioned along the lower mold parallel to the connection direction. A method of forming an electrical connector, wherein a plurality of plane-side terminals and a plurality of bottom-side terminals insulated from each other along the connecting direction of the plane and the bottom of the support plate are insert-molded integrally with the support plate,
Position each of the plurality of flat-side terminals along the upper die at equal pitches on both sides of the second presser pin suspended from the upper die side part, with a slightly wider interval than the second presser pin. sandwiched between the first pressing pin provided upright from the site of the mold and the lower mold side, a plurality of the respective bottom-side terminals, or the like spaced either side at intervals of slightly wider than the first pressing pins of the first holding pin It is positioned along the lower mold at a pitch, and characterized in that sandwiched between the lower die and the second pressing pins, positioning within the cavity a plurality of planar side terminals and a plurality of bottom-side terminals during the injection molding To do.

Since the first presser pin and the second presser pin protrude from the portions that do not interfere with the bottom face side terminal and the flat face side terminal, respectively, the plurality of flat face side terminals and the plurality of bottom face side terminals respectively extend along the upper mold and the lower mold. Positioned and a plurality of terminals are insert molded on the flat and bottom surfaces of the support plate. A direction along the inner surface of the mold at the time of injection molding, with the second pressing pin interposed between the adjacent flat side terminals and the first pressing pin between the adjacent bottom side terminals while being positioned in the cavity. Adjacent terminals do not come into contact with each other even when subjected to the fluid pressure.

According to invention of Claim 1 and Claim 4 , many terminals can be attached to the support plate of a limited magnitude | size by insert molding. As a result, all terminals are integrally molded with the support plate by insert molding, so they can be mounted along the flat and bottom surfaces of the support plate without variation, and the contact position with the mating connector does not vary from terminal to terminal. The timing does not shift.

Also, even if the leading end side in the connection direction of the terminal in the cavity is not connected by a carrier, the adjacent terminals do not come into contact with each other, so that the conductive part that is electrically connected to the terminal is not exposed at the tip of the support plate. There is no contact with external terminals or electrostatic noise.

According to the second aspect of the present invention, even if the terminal is attached to the flat surface or the bottom surface of the support plate at different heights in accordance with the shape of the mating connector to be electrically connected, the flat surface terminal or the bottom surface terminal respectively. Can be integrally formed by insert molding.

According to the invention of claim 3, the terminals protruding from the rear of the insulating housing body are also aligned on one side so as to be parallel to the plane of the printed wiring board on which the electrical connector is mounted by being sandwiched between the upper and lower molds. Therefore, a part of the printed circuit board can be reliably soldered to the land pattern of the printed wiring board without partly rising from the plane of the board.

1 is an exploded perspective view of an electrical connector 1 according to an embodiment of the present invention. 1 is a perspective view of an electrical connector 1. FIG. It is a top view of the electrical connector 1 shown except the shield case 2. FIG. FIG. 5 is a bottom view of the electrical connector 1 shown with the shield case 2 removed. It is a side view of the electrical connector 1 shown excluding the shield case 2. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is the longitudinal cross-sectional view which cut | disconnected the core 3 and the cavity 4 in the position of the AA line of FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is sectional drawing which cut | disconnected the core 3 and the cavity 4 in the position of the BB line of FIG. FIG. 3 is a longitudinal sectional view in which a core 3 and a cavity 4 are cut along the positions of many first pressing pins 5. It is the perspective view seen from diagonally back of the electrical connector 1 except a shield case. FIG. 6 is a longitudinal sectional view of a conventional electrical connector 100 cut along a terminal 103.

  Hereinafter, an electrical connector 1 and a molding method thereof according to an embodiment of the present invention will be described with reference to FIGS. The electrical connector 1 is an HDMI connector that conforms to the HDMI (High-Definition Multimedia Interface) standard, and as shown in FIG. 1, an insulating housing 9 in which a supporting plate 8 projects from an insulating housing body 7, and a supporting plate 8. Covers the outer periphery of the insulating housing 9 and the plurality of bottom terminals 10, 11,... That are exposed and attached to the bottom surface of the support plate 8. And a shield case 2 attached thereto.

  The insulating housing body 7 is formed in a rectangular parallelepiped shape having flange portions 7a and 7a formed on both left and right sides (up and down in FIGS. 3 and 4), and is connected to the mating connector (on the left side in FIG. A tongue plate-like support plate 8 is integrally projected in a horizontal direction toward the front).

  The plane-side terminal 10 is punched into a strip shape in a state of being connected to a carrier (not shown) rearward from the conductive thin metal plate, and as shown in FIG. 8, the front contact portion 10a and the intermediate connection portion 10b. And the rear leg portion 10c is bent into three stages. Ten planar terminals 10 are integrally connected to the carrier with a width substantially equal to the width of the bottom terminal 11, and the contact portions 10 a of the planar terminals 10 cut from the carrier are connected to the carrier plate 8. The connecting portions 10b and the rear leg portions 10c protrude rearward from the insulating housing body 7 and are exposed in the plane along the front-rear direction.

  Further, the bottom terminal 11 is also punched into a strip shape in a state of being connected to a carrier (not shown) rearward from the conductive thin metal plate, and as shown in FIG. 6, the front contact part 11a and the rear leg part 11b is bent into two stages. Nine bottom side terminals 11 are integrally connected to the carrier with a width substantially equal to the width of the plane side terminal 11, and each bottom side terminal 11 cut from the carrier has 10 planes when viewed from the front. It is attached to the insulating housing 9 in a zigzag manner with the side terminals 10. That is, the adjacent bottom side terminals 11 and 11 are attached along the front-rear direction with a width substantially the same as the width of the flat side terminal 10, and the contact portions 11a of the bottom side terminals 11 cut from the carrier are supported. The bottom surface of the plate 8 is exposed along the front-rear direction, and the rear leg portion 11 b protrudes rearward from the bottom surface of the insulating housing body 7.

  The ten plane side terminals 10 and the nine bottom side terminals 11 described above are positioned in the core (lower mold) 3 and the cavity (upper mold) 4 in a state where they are connected to the carrier, and are insulated by insert molding. 9 is integrally formed. As shown in FIGS. 7, 9, and 10, the nine bottom-side terminals 11 are spaced substantially the same width as the plane-side terminal 10 and are on the plane of the core 3 that forms the bottom surface of the support plate 8. The ten plane-side terminals 10 are arranged in the front-rear direction along the inner top surface of the cavity 4 that forms the plane of the support plate 8 with substantially the same width as the bottom-side terminal 11. Is done.

  Further, a first presser that is urged upward by the spring 12 toward the plane-side terminals 10 arranged in a staggered manner at the 10 sites on both sides where the bottom-side terminals 11 on the plane of the core 3 are arranged. On the other hand, the pins 5 are arranged so as to protrude, and on the other hand, at the nine locations where the ten planar terminals 10 on the inner top surface of the cavity 4 are disposed, the springs 13 are moved downward toward the bottom terminal 11. The second pressing pin 6 to be urged is disposed so as to protrude. The plurality of first pressing pins 5 and the plurality of second pressing pins 6 are respectively arranged on the straight portions in the left-right direction, but the portions of the pressing pins 5 and 6 of the support plate 8 to be molded are arranged. Since holes 15 and 16 to be described later are formed, the first pressing pin 5 is disposed in a position forward of the second pressing pin 6 in order to maintain the strength of the support plate 8.

  When the core 3 and the cavity 4 configured in this manner are brought together, a closed cavity 14 forming the outline of the insulating housing 9 is formed, and the first pressing pin 5 biased upward from the core 3 side is The second pressing pin 6 that is in contact with the upper flat terminal 10 facing upward and biased downward from the cavity 4 side is in contact with the lower terminal 11 facing downward.

  As a result, each flat terminal 10 is sandwiched between the front contact portion 10a between the inner top surface of the cavity 4 and the first pressing pin 5 biased upward from the core 3 side, and the rear is integrated with the carrier. In the state of being connected to each other, the rear connecting portion 10b and the leg portion 10c are sandwiched and positioned between the core 3 and the cavity 4.

  Similarly, each bottom side terminal 11 is sandwiched between the front pressing portion 11a between the flat surface of the core 3 and the second pressing pin 6 urged downward from the cavity 4 side, and the rear side is integrally connected to the carrier. In this state, the rear leg portion 11b is sandwiched and positioned between the core 3 and the cavity 4.

  Even if an insulating resin forming the insulating housing 9 is flowed into the cavity 14 from a gate (not shown) and the flat terminal 10 and the bottom terminal 11 are subjected to the flow pressure of the insulating resin, the contact portion 10a disposed in the cavity 14 , 11a are positioned with respect to the vertical direction as described above, and the insulating resin does not flow into the mold.

  Further, each of the plurality of plane side terminals 10 and the bottom side terminals 11 is not connected to the carrier in the front, but as shown in FIG. 10, the plane side terminals 10 and 10 or the bottom side sides 11 and 11 adjacent in the horizontal direction. The second presser pin 6 or the first presser pin 5 is interposed between them, and they are positioned in the horizontal direction, and even if the terminals are arranged at a narrow pitch, they can be molded in a state where adjacent terminals are in contact with each other. Absent.

  When the insulating resin is cured, the flat terminal 10 and the bottom terminal 11 are insert-molded into the insulating housing 9, and then the carrier connected to the rear of the terminals 10 and 11 is cut at the legs 10c and 11b. As shown in FIGS. 3, 4 and 11, an insulating housing 9 is obtained in which the flat terminal 10 and the bottom terminal 11 are integrally attached. The holes 16 and 15 of the second pressing pin 6 and the first pressing pin 6 appear on the flat surface and the bottom surface of the insert-molded insulating plate 7, respectively.

  As shown in FIG. 1, the electrical connector 1 covers the insulating housing 9 from the front side to the conductive shield case 2 having a rectangular tube shape, and the wing piece 2 a of the shield case 2 behind the flange portion 7 a of the insulating housing body 7. 2a is folded and assembled.

  In the electrical connector 1 manufactured in this way, a large number of terminals 10 and 11 are attached to the front and back of the support plate 8 of a limited size at a narrow pitch, and each terminal 10 exposed on the front and bottom surfaces of the support plate 8 is exposed. , 11 are positioned at the time of injection molding, so that an insulating resin adheres to the contact portions 10a, 11a, resulting in poor connection with the mating connector, or a short circuit between adjacent terminals. There is nothing to do. Moreover, since it can shape | mold without connecting a carrier ahead, the front of the support plate 8 is covered with the insulating resin, and the conductor connected to the terminals 10 and 11 is not exposed at the tip of the support plate 8.

  Furthermore, the leg portions 10c and 11b of the terminals 10 and 11 protruding rearward of the insulating housing 9 are sandwiched between the core 3 and the cavity 4, and are disposed on the same horizontal plane parallel to the bottom surface of the insulating housing 9. All the leg portions 10c and 11b are aligned on the plane of the printed wiring board on which the electrical connector 1 is mounted, and can be securely soldered to the land pattern on the printed wiring board disposed at the opposing position.

  In the above-described embodiment, the plurality of flat-side terminals 10 and the plurality of bottom-side terminals 11 are attached at the same pitch, but the first pressing pin 5 is connected to the bottom-side terminal 11 in the cavity 14 and the second pressing-down terminal. If the pin 6 is in a position where it does not interfere with the arrangement position of the planar terminal 10 in the cavity 14, the terminal mounting position is arbitrary.

  Further, the plane and the bottom surface of the support plate 8 have been described as flat surfaces, but the present invention can be applied even if one or both surfaces are two or more different height surfaces separated by steps. Can be applied. That is, when the first terminal and the second terminal are distributed and molded with different heights on the surface, the inner surface of the mold does not interfere with the terminal attached to the other plane or bottom surface in the cavity. The first terminal and the second terminal can be positioned with a holding pin having a length corresponding to the height surface, and the terminal can be insert-molded on each surface.

  Terminals that are electrically connected to the mating connector can be applied to electrical connectors that are attached to both the flat and bottom surfaces of the support plate.

1 Electrical connector 3 Core (lower mold)
4 Cavity (upper mold)
5 First presser pin 6 Second presser pin 7 Insulating housing body 8 Support plate 10 Plane side terminal 11 Bottom side terminal

Claims (4)

A support plate integrally projecting from the insulating housing body in the connecting direction with the mating connector;
A plurality of plane-side terminals attached to the plane of the support plate in an insulating manner along the connection direction;
A plurality of bottom-side terminals attached to the bottom surface of the support plate and insulated from each other along the connection direction;
A plurality of plane-side terminals and a plurality of bottom-side terminals are provided along the upper mold and the lower mold, respectively, in a cavity formed from an upper mold that forms the plane side of the support plate and a lower mold that forms the bottom side. An electrical connector that is positioned and insert molded integrally with the support plate,
Each of the plurality of plane side terminals is positioned along the upper die at equal pitches on both sides of the second pressing pin suspended from the portion on the upper die side, with an interval slightly wider than the second pressing pin. , while being held between the first holding pin extending upright from the site of the upper mold and the lower mold side,
Each of the plurality of bottom-side terminals, on both sides in the first or the like spaced slightly wider than the retainer pin pitch of the first pressing pins positioned along the lower mold, between the lower mold and the second holding pin Pinched,
An electrical connector characterized in that a plurality of planar terminals and a plurality of bottom terminals are positioned in a cavity. A support plate integrally projecting from the insulating housing body in the connecting direction with the mating connector;
A plurality of plane-side terminals attached to the plane of the support plate in an insulating manner along the connection direction;
A plurality of bottom-side terminals attached to the bottom surface of the support plate and insulated from each other along the connection direction;
A plurality of plane-side terminals and a plurality of bottom-side terminals are provided along the upper mold and the lower mold, respectively, in a cavity formed from an upper mold that forms the plane side of the support plate and a lower mold that forms the bottom side. An electrical connector that is positioned and insert molded integrally with the support plate,
Each planar terminal is sandwiched between the upper mold and a first pressing pin erected from the lower mold side portion that does not interfere with the bottom terminal,
Each bottom-side terminal is sandwiched between the lower mold and a second pressing pin that is suspended from a portion on the upper mold side that does not interfere with the planar terminal,
A plurality of flat side terminals and a plurality of bottom side terminals are positioned in the cavity,
An electrical connector , wherein at least a part of the plurality of plane side terminals and the plurality of bottom side terminals are attached to two or more planes or bottom surfaces having different heights separated by a step portion of the support plate . Leg of the leg portion or the bottom side terminals of the plane side terminals, sandwiched between upper and lower molds during the insert molding, according to claim 1 or, characterized in that projecting in parallel on one plane from the insulating housing The electrical connector according to claim 2 . In the cavity formed by combining the upper mold that forms the flat surface side of the support plate that is integrally projected in the connection direction with the mating connector from the insulating housing body and the lower mold that forms the bottom surface side,
A plurality of planar side terminal while positioned along the connection direction and parallel with said upper mold with each other, a plurality of bottom-side terminals, positioned along the connection direction in parallel with the lower mold together,
A method of forming an electrical connector, wherein a plurality of plane-side terminals and a plurality of bottom-side terminals insulated from each other along the connecting direction of the plane and the bottom of the support plate are insert-molded integrally with the support plate,
Position each of the plurality of planar terminals along the upper die at equal pitches on both sides of the second presser pin suspended from the upper die side part and spaced slightly wider than the second presser pin. , sandwiched between the first pressing pin provided upright from the site of the lower mold side to the upper mold,
A plurality of respective bottom terminal, and positioned along the lower mold on both sides in the first or the like spaced slightly wider than the retainer pin pitch of the first pressing pin, between the lower mold and the second holding pin Pinching,
A method for forming an electrical connector, comprising: positioning a plurality of flat-side terminals and a plurality of bottom-side terminals in a cavity during injection molding.

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