JP6497398B2 - Insulating member manufacturing method and electrical connector - Google Patents

Description

  The present invention relates to a method for manufacturing an insulating member and an electrical connector.

  In order to prevent stress concentration and warping, a molding method is disclosed in which molten resin is injected from a plurality of pinpoint gates into the internal space (cavity) of a mold of a molded product. In this molding method, a plurality of pinpoint gates (gate holes) are not arranged on the line that bisects the longitudinal direction of the insulating member and bisects the depth direction, but these lines are not divided. There is a method of disproportionate arrangement (see, for example, Patent Document 1). If the gate hole is arranged as described above, the thin line generated in the molded insulating member where the molten resin has joined and welded, that is, the weld line (resin fusion portion), is replaced with the insulating member described above. By shifting from the equally dividing line, it is possible to improve the strength of the insulating member and reduce the warpage of the insulating member.

Japanese Patent No. 5393985

  However, in the molding method disclosed in Patent Document 1, since a plurality of gate holes are not provided in the center of the molded product, the flow of the molten resin injected from the pinpoint gate is likely to be biased, and the molten resin The fluidity of can be reduced. The uneven flow of the molten resin and the decrease in fluidity cause defective molding.

  The present invention has been made in view of the above circumstances, and the flow of injected molten resin is less likely to be biased, and the fluidity of the molten resin is not impaired, while improving the strength of the insulating member and insulating. An object of the present invention is to provide an insulating member manufacturing method and an electrical connector capable of reducing the warpage of a member.

In order to achieve the above object, a method of manufacturing an insulating member according to the first aspect of the present invention includes:
A molding step of molding the insulating member by filling molten resin into the inner space of the mold from at least four gate holes;
In the molding step,
Two of the four gate holes are formed on a first virtual straight line that bisects the internal space in the longitudinal direction of the internal space;
The remaining two of the four gate holes are formed on a second virtual line that bisects the internal space in the direction of the first virtual line .

An electrical connector according to a second aspect of the present invention is:
An insulating housing having at least four gate hole marks formed as a filling port of a molten resin at the time of molding;
Two of the four gate hole traces are formed on a first virtual straight line that bisects the internal space in the longitudinal direction of the internal space,
The remaining two of the four gate hole traces are formed on a second virtual line that bisects the internal space in the direction of the first virtual line .

According to the present invention, two of the at least four gates holes to fill the molten resin into the inner space of the mold is formed in a first virtual straight line which bisects the interior space in the longitudinal direction, remaining The two are formed on a second virtual line that divides the internal space into two equal parts in the direction on the first virtual line . Thus, the c Erudorain, so as not to overlap with the first virtual line and the second imaginary straight line, and can be evenly dispersed. As a result, the flow of the injected molten resin is less likely to be biased, and the strength of the insulating member can be improved and the warpage of the insulating member can be reduced while maintaining the fluidity of the molten resin. .

FIG. 1A is a perspective view of an electrical connector according to Embodiment 1 of the present invention. FIG. 1B is a diagram showing a state in which a flexible printed board is inserted into the electrical connector of FIG. FIG. 1C is a diagram illustrating a state in which the flexible printed board is fixed to the electrical connector. 2A, 2B, 2C, and 2D are cross-sectional views of the electrical connector. It is a flowchart which shows the flow of the manufacturing method of an electrical connector. FIG. 4A is a schematic diagram showing a route of molten metal. FIG. 4B is a diagram illustrating the positional relationship of the gate holes. FIG. 4C is a diagram illustrating an example of a weld line. It is a top view of the insulation housing which comprises the electrical connector which concerns on Embodiment 2 of this invention. It is a top view of the insulation housing which comprises the electrical connector which concerns on Embodiment 3 of this invention. It is a top view of the insulation housing which comprises the electrical connector which concerns on Embodiment 4 of this invention. It is a top view of the insulation housing which comprises the electrical connector which concerns on Embodiment 5 of this invention. It is a figure which shows the modification (the 1) of arrangement | positioning of a gate hole trace. It is a figure which shows the modification (the 2) of arrangement | positioning of a gate hole trace. FIG. 11A and FIG. 11B are diagrams showing a modified example (No. 3) of the arrangement of the gate hole traces.

Embodiment 1 FIG.
First, the first embodiment of the present invention will be described in detail with reference to FIGS.

  The electrical connector 1 according to the first embodiment is mounted on a substrate (not shown), and as shown in FIG. 1A, a housing (insulating housing) 10 that is a housing of the electrical connector 1, and a housing 10 A plurality of contacts 11 which are provided terminals, a pair of locking members 12 for locking a flexible printed circuit board (FPC (Flexible Printed Circuits)) 50 (see FIG. 1B) to be inserted into the housing 10, and electrodes of the FPC 50 And an actuator 13 that drives the contact 11 so as to be in press contact.

  The housing 10 is an insulating member made of resin, and is a box-shaped housing whose outer shape is a substantially rectangular parallelepiped shape. The present embodiment has a feature in the molding method of the housing 10. The housing 10 has an insertion port 10a extending in the longitudinal direction, and as shown in FIG. 1B, the FPC 50 is inserted into the insertion port 10a. In the present embodiment, the longitudinal direction of the housing 10 is the x-axis direction, the insertion direction of the FPC 50 is the y-axis direction, and the thickness direction is the z-axis direction.

  On the upper surface (the surface on the + z side) of the housing 10, gate hole traces 6a, 6b, and 6c, which are traces of gate holes at the time of molding, are formed as described later. The gate hole traces 6a are arranged on a line that bisects the housing 10 along the longitudinal direction of the housing 10 (on a line parallel to the y-axis), and the gate hole traces 6b and 6c are It is arranged in a line-symmetric position. With these arrangements, as will be described later, the housing 10 is molded while causing no deviation of the molten resin and the fluidity of the molten resin is not impaired, and the strength of the housing 10 is improved. The reduction of the warpage can be realized.

  Further, weld lines WL1 and WL2 formed at the time of molding are formed on the upper surface of the housing 10. The weld lines WL1 and WL2 are thin lines generated in a portion where the molten resin is joined and welded, which is generated in the molded insulating member. The weld lines WL1 and WL2 are not arranged on a line that bisects the housing 10 in the longitudinal direction of the housing 10, and are formed so as to be distributed substantially symmetrically with respect to the line. Note that the weld lines WL1 and WL2 are actually thick enough to be invisible to the naked eye, branched in various ways, and have complicated shapes.

  The plurality of contacts 11 are made of a conductive member such as metal, and are arranged in the longitudinal direction of the housing 10 at the insertion port 10 a of the housing 10. Actually, the plurality of contacts 11 includes two types of contacts 11 a and 11 b, and the contacts 11 a and 11 b are alternately arranged in the longitudinal direction of the housing 10. The contacts 11a and 11b have a board connecting portion protruding from the bottom surface (the surface on the −z side) of the housing 10, and the board connecting portion is connected to the electrode of the board on which the electrical connector 1 is mounted by soldering or the like. Is done. When the electrical connector 1 is assembled, the contact 11a is pushed (press-fitted) into the housing 10 from the insertion port 10a toward the actuator 13, and the contact 11b is directed from the back port 10b facing the insertion port 10a to the insertion port 10a. Are pushed into the housing 10 (press-fitted).

  When the FPC 50 is inserted into the insertion port 10a of the housing 10, the positions of the contacts 11a and 11b coincide with the positions of the electrodes of the FPC 50. Further, as shown in FIGS. 2A and 2B, the contacts 11a and 11b are shaped so that a pair of beam members (11aa and 11ab) and (11ba and 11bb) extending in the y-axis direction are near the center. Thus, it is H-shaped connected via the connecting portions 11ac and 11bc. The FPC 50 inserted into the insertion port 10a is inserted and sandwiched between the pair of beam members 11aa and 11ab of the contact 11a and the pair of beam members 11ba and 11bb of the contact 11b from the −y side. Become.

  The pair of lock members 12 are provided on both sides in the x-axis direction in the insertion port 10 a of the housing 10. When the FPC 50 is inserted into the insertion port 10a, the lock members 12 are engaged with the notches 50a provided on both sides of the FPC 50 in the x-axis direction, and the FPC 50 is prevented from coming off.

  The actuator 13 is an insulating member made of resin, and is configured to be rotatable around the x axis with respect to the housing 10. The actuator 13 is provided with a cam shaft 13a. The cam shaft 13a is installed between the pair of beam members 11ba and 11bb and between the pair of beam members 11ba and 11bb in the contacts 11a and 11b. When the actuator 13 is rotated from the state shown in FIGS. 2 (A) and 2 (B) to the state shown in FIGS. 2 (C) and 2 (D), the cam shaft 13a becomes the beam member 11aa on the + y side of the contact 11a. , 11ab between the beam members 11ba, 11bb on the + y side of the contact 11b. As a result, the pressing contact between the contact portions 11ae and 11be of the contacts 11a and 11b and the electrode of the FPC 50 is completed, and the electrodes of the FPC 50 and the board connection portions 11ad and 11bd of the contacts 11a and 11b are soldered via the contacts 11a and 11b. Electrical connection with the electrodes of the attached substrate is maintained.

  The electrical connector 1 is manufactured according to the flow shown in FIG. First, the housing 10 is molded (step S1). This molding is performed by an injection molding machine. In the injection molding machine, a mold 15 (see FIG. 4A) of the housing 10 is installed, and a plurality of pinpoint gates 4a and 4b provided in the mold 15 with molten resin melted in a heating tower and protruding from a nozzle. , 4c, etc. (see FIG. 4A), the interior space 20 of the mold 15 is filled.

  In parallel with this, the contacts 11a and 11b and the lock member 12 are molded (step S2). This molding is performed by a press machine for punching metal. Further, in parallel with this, the actuator 13 is molded (step S3). This molding is also performed by an injection molding machine, similarly to the molding of the housing 10.

  After the molding of the member is completed, the contacts 11a and 11b and the lock member 12 are inserted into the housing 10 (step S4). The contact 11a is inserted from the insertion port 10a, and the contact 11b and the lock member 12 are inserted in the housing 10 from an opening formed on the opposite side of the insertion port 10a.

  Further, the actuator 13 is inserted from the rear (+ y side) of the housing 10 (step S5). Specifically, the actuator 13 is inserted so that the cam shaft 13a is sandwiched between the pair of beam members (11aa, 11ab), (11ba, 11bb) of the contacts 11a, 11b.

  Thus, the method for manufacturing electrical connector 1 according to the first embodiment includes a molding step (step S1) for molding housing 10 that is an insulating member. As shown in FIG. 4A, the internal space (cavity) 20 of the mold 15 of the housing 10 used in this molding step has a substantially rectangular parallelepiped shape according to the outer shape of the housing 10. In the mold 15, three pinpoint gates 4 a, 4 b, 4 c that are filled with molten resin are formed. Gate holes 5a, 5b, 5c connected to the internal space 20 of the mold 15 are arranged at the tips of the pinpoint gates 4a, 4b, 4c. The traces of the gate holes 5a, 5b, and 5c are the gate hole traces 6a, 6b, and 6c shown in FIGS. 1 (A) to 1 (C). 4A to 4C, the internal space 20 does not coincide with the outer shape of the housing 10, and a schematic shape is shown.

  The molten resin discharged from the nozzle of the injection molding machine is connected to the pinpoint gates 4a, 4b, 4c (gate holes 5a, 5b, 5c) through the sprue 2 and runners 3a, 3b, 3c formed in the mold 15. The interior space 20 is filled through. The shape and size of the runners 3a, 3b, 3c are the same, the shape and size of the pinpoint gates 4a, 4b, 4c are the same, and the shape and size of the gate holes 5a, 5b, 5c are also the same. Therefore, the molten resin flows into the internal space 20 at the same pressure and speed.

  As shown in FIG. 4B, the positions of the gate holes 5a, 5b, and 5c of the pinpoint gates 4a, 4b, and 4c are the gate hole traces 6a, 6b, and 6C shown in FIGS. This corresponds to the position 6c. Here, the positional relationship between the gate holes 5a, 5b, and 5c will be described in detail. In order to clarify this positional relationship, a straight line that bisects the internal space 20 along its longitudinal direction is defined as a first virtual straight line 20a, and the internal space 20 is divided into two equal parts along the first virtual straight line 20a. Let the straight line be the second virtual straight line 20b. In the present embodiment, the second imaginary straight line 20b is formed on the housing 10 excluding the convex portion S projecting in the y-axis direction formed along the groove into which the contacts 11a and 11b of the housing 10 are inserted. It is defined based on the width T in the y-axis direction (see FIG. 4).

  In the present embodiment, as shown in FIG. 4B, the gate hole 5a among the gate holes 5a, 5b, 5c is arranged on the first virtual straight line 20a. The other gate holes 5b and 5c are virtual line segments 20c and 20d that connect the gate hole 5a disposed on the first virtual straight line 20a and the other gate holes 5b and 5c, respectively. And it arrange | positions so that it may not become in parallel with the 2nd virtual straight line 20b.

  In other words, in the present embodiment, the three gate holes 5a, 5b, 5c are respectively arranged at the vertices of the triangle.

  Further, according to the present embodiment, the three gate holes 5a, 5b, 5c located at the vertices of the triangle are the gate hole 5a arranged on the first virtual straight line 20a and the remaining two gate holes 5b. , 5c are arranged so that the lengths of the virtual line segments 20c, 20d are equal to each other.

  In addition, according to the present embodiment, the three gate holes 5a, 5b, 5c respectively located at the vertices of the triangle are divided into two gate holes 5b, The virtual line segment connecting 5c is arranged so as to be parallel to the first virtual straight line 20a or the second virtual straight line 20b.

  Further, the three gate holes 5a, 5b, 5c located at the vertices of the triangle are arranged on the first imaginary straight line 20a and the second imaginary straight line 20b, respectively. That is, the gate hole 5a is formed on the first virtual straight line 20a, and the gate holes 5b and 5c are formed on the second virtual straight line 20b.

  Thus, the gate holes 5a, 5b, 5c are evenly arranged in the longitudinal direction of the internal space 20. In other words, the gate holes 5b and 5c are arranged symmetrically with respect to the first virtual straight line 20a. Thereby, it is possible to fill the internal space 20 with the molten resin without deviation.

  The molten resin flows into the internal space 20 simultaneously from the gate holes 5a, 5b, 5c. As shown in FIG. 4C, the weld line WL1 is formed near the midpoint of the virtual line segment 20c that connects the gate hole 5a and the gate hole 5b so as to be substantially orthogonal to the virtual line segment 20c. Further, the weld line WL2 is formed near the midpoint of the virtual line segment 20d that connects the gate hole 5a and the gate hole 5c so as to be substantially orthogonal to the virtual line segment 20d. Therefore, no weld line is formed on the first virtual straight line 20a of the housing 10, and the weld lines WL1 and WL2 are formed in a distributed manner. This leads to an increase in strength of the housing 10. As shown in FIGS. 1B and 1C, in the electrical connector 1, the actuator 13 is manually rotated to fix the FPC 50, but when the actuator 13 is manually rotated, the housing The vicinity of the 10 first virtual straight lines 20a is pressed. Since the weld lines WL1 and WL2 are arranged in a distributed manner, the strength of the housing 10 with respect to this pushing force can be improved as compared with a housing in which one weld line is formed at the center.

  Further, since the virtual line segment 20c and the virtual line segment 20d are not parallel to the first virtual straight line 20a and the second virtual straight line 20b, the extending direction of the weld lines WL1 and WL2 is also the first virtual straight line 20a and the second virtual straight line 20b. Are inclined with respect to the virtual straight line 20b, and their directions are different from each other. By this inclination, the housing 10 is further strengthened against the pressing force when the actuator 13 is operated.

  In the electrical connector 1, as described above, the direction in which the weld lines WL1, WL2 extend is inclined with respect to the first imaginary straight line 20a and the second imaginary straight line 20b. Therefore, the distance from the weld lines WL1 and WL2 to the end in the longitudinal direction of the housing 10 is different on the left and right in the x-axis direction with respect to the weld lines WL1 and WL2 (see, for example, FIG. 4C). . Therefore, when an external force is applied to the opposite ends of the housing 10 in the longitudinal direction (when the housing 10 is held so as to sandwich both ends in the longitudinal direction of the housing 10), the housing Reference numeral 10 indicates a high strength as compared with a housing in which one weld line is formed at the center in the longitudinal direction.

  Furthermore, in the electrical connector 1, the distance from the weld lines WL1 and WL2 to the end portion in the short direction of the housing 10 is different in the vertical direction in the y-axis direction with respect to the weld lines WL1 and WL2. Therefore, when an external force is applied to the opposite ends of the housing 10 in the short direction (when the housing 10 is held so as to sandwich the opposite ends of the housing 10 in the short direction). The housing 10 exhibits higher strength than a housing in which a weld line is formed at the center in the short direction.

  As described above in detail, according to the present embodiment, the gate hole 5a out of the at least three gate holes 5a, 5b, 5c filling the inner space 20 of the mold 15 with the molten resin It arrange | positions on the 1st virtual straight line 20a which divides into 2 equal to a longitudinal direction. Of the at least three gate holes 5a, 5b and 5c, the other gate holes 5b and 5c are virtual connections between the gate hole 5a arranged on the first virtual straight line 20a and the other gate holes 5b and 5c. The line segments 20c and 20d are arranged so as not to be parallel to the first virtual straight line 20a and the second virtual straight line 20b. As a result, at least one gate hole 5a can be arranged in the center of the internal space 20, and the remaining gate holes 5b and 5c can be evenly arranged, and the weld lines WL1 and WL2 can be connected to the first virtual straight line 20a and The second virtual straight line 20b can be dispersed without overlapping. As a result, the flow of the injected molten resin is less likely to be biased, and the strength of the insulating member can be improved and the warpage of the insulating member can be reduced while maintaining the fluidity of the molten resin. .

Embodiment 2. FIG.
Next, a second embodiment of the present invention will be described in detail with reference to FIG. Also in this embodiment, the case where the housing 10 of the electrical connector 1 is molded will be described.

  As shown in FIG. 5, also in the present embodiment, at least three gate hole traces 6a, 6b, 6c are formed in the housing 10 as traces of the filling port of the molten resin at the time of molding. At least one gate hole mark 6 a is arranged on a first imaginary straight line 20 a that bisects the housing 10 in the longitudinal direction of the housing 10. Further, virtual line segments 20c and 20d connecting the gate hole trace 6a disposed on the first virtual straight line 20a and the other gate hole traces 6b and 6c are the first virtual straight line 20a and the second virtual straight line. Gate hole traces 6a, 6b and 6c are formed so as not to be parallel to 20b. A triangle is formed with the gate hole traces 6a, 6b and 6c as vertices.

  Also in the present embodiment, the gate hole traces 6b and 6c are arranged on the second virtual straight line 20b. In the present embodiment, the distance between the gate hole trace 6a and the gate hole traces 6b and 6c in the x-axis direction is narrow. Therefore, the weld line WL3 formed between the gate hole traces 6a and 6b3 and the weld line WL4 formed between the gate hole traces 6a and 6c are formed in the vicinity of the first virtual straight line 20a. Even in this case, the weld lines WL3 and WL4 are formed in an evenly distributed manner, so that the molten resin can be molded without unevenness, and one weld line is formed on the first virtual straight line 20a. Compared to the case, the strength of the housing 10 is improved.

Embodiment 3 FIG.
Next, Embodiment 3 of the present invention will be described in detail with reference to FIG. Also in this embodiment, the case where the housing 10 of the electrical connector 1 is molded will be described.

  As shown in FIG. 6, also in this embodiment, the gate hole trace 6a is formed on the first virtual line 20a, and the gate hole marks 6b and 6c are formed on the second virtual line 20b. Although the same as in the second embodiment, in this embodiment, the intervals between the gate hole traces 6a, 6b, and 6c are longer in the x-axis direction. With this arrangement, the weld lines WL5 and WL6 are formed at positions farther from the first virtual straight line 20a than the weld lines WL3 and WL4 according to the above embodiment. For this reason, the strength of the housing 10 is improved against the pressing force generated when the actuator 13 rotates.

Embodiment 4 FIG.
Next, a fourth embodiment of the present invention will be described in detail with reference to FIG. Also in this embodiment, the case where the housing 10 of the electrical connector 1 is molded will be described.

  As shown in FIG. 7, in the present embodiment, the positional relationship between the gate hole marks 6a, 6b, 6c in the housing 10 is different from that in the third embodiment. Also in the present embodiment, the central gate hole trace 6a is arranged on the first virtual straight line 20a. However, the gate hole traces 6b and 6c are not arranged on the second imaginary straight line 20b, but are arranged away from the second imaginary straight line 20b in the -y direction. Also in the present embodiment, the formed weld lines WL7 and WL8 are formed so as to be distributed on both sides in the longitudinal direction around the first virtual straight line 20a, so that the strength of the housing 10 against the pressing force is improved.

Embodiment 5. FIG.
Next, a fifth embodiment of the present invention will be described in detail with reference to FIG. Also in this embodiment, the case where the housing 10 of the electrical connector 1 is molded will be described.

  As shown in FIG. 8, in the present embodiment, the positional relationship between the gate hole marks 6a, 6b, 6c in the housing 10 is different from that in the third embodiment. Also in the present embodiment, the central gate hole trace 6a is arranged on the first virtual straight line 20a. However, the gate hole traces 6b and 6c are not arranged on the second imaginary straight line 20b, but are arranged away from the second imaginary straight line 20b in the + y direction. Also in the present embodiment, the formed weld lines WL9 and WL10 are distributed and formed on both sides in the longitudinal direction around the first virtual straight line 20a, so that the strength of the housing 10 against the pressing force is improved.

  In each of the above embodiments, the number of gate holes is three, but the present invention is not limited to this. As shown in FIG. 9, four or more gate holes may be provided. In this housing 10, four gate hole traces 6a, 6b, 6c and 6d are formed. Even in this case, at least one of the gate hole traces 6a, 6b, 6c, and 6d is arranged on the first virtual straight line 20a, and the other two gate hole traces are arranged to form a triangle. Good. In this example, weld lines WL11, WL12, and WL13 are formed between the gate hole traces 6a, 6b, 6c, and 6d.

  In each of the above-described embodiments, the width in the y-axis direction of the housing 10 serving as a reference for the second virtual straight line 20b is the width T when the protruding portion protruding in the y-axis direction of the housing 10 is removed. The present invention is not limited to this (see FIG. 5). A line that bisects the housing 10 with the width S + T including the convex portion may be defined as the second virtual straight line 20b. However, in the case where the gate hole is located in the portion of the width S including the convex portion, it is necessary to design a mold in consideration of a decrease in resin fluidity due to the convex portion. For this reason, it is desirable that the gate hole is not located in the portion of the width S including the convex portion by setting the width in the y-axis direction of the housing 10 as a reference of the second virtual straight line 20b to T.

  In each of the above embodiments, the three gate holes 5a, 5b, 5c are arranged at the vertices of the triangle, but the present invention is not limited to this. As shown in FIG. 10, the three gate holes 5a, 5b, and 5c (gate hole traces 6a, 6b, and 6c) are arranged on a straight line that is not parallel to the first virtual straight line 20a and the second virtual straight line 20b. It may be arranged. In this case, the directions of the weld lines WL14 and WL15 are substantially the same.

  In each of the above embodiments, at least one gate hole 5a among the gate holes 5a, 5b, 5c is formed in the internal space 20 of the mold 15 as shown in FIGS. 11 (A) and 11 (B). However, the inner space 20 may be arranged on the second imaginary straight line 20b. In the example shown in FIG. 11A, a fourth gate hole 5d is provided in order to evenly arrange the gate holes. Also in these cases, the virtual line segments 20c and 20d connecting the gate hole 5a disposed on the second virtual straight line 20b and the other gate holes 5b and 5c are the first virtual straight line 20a and the second virtual line 20c. It arrange | positions so that it may not become in parallel with the straight line 20b.

  In each of the above embodiments, the gate hole 5a is arranged on the -y side and the gate holes 5b and 5c are arranged on the + y side. However, they may be arranged in the opposite direction. That is, in each of the above embodiments, the gates 5a, 5b, and 5c may be arranged symmetrically with respect to the second virtual straight line 20b.

  In each of the above embodiments, the sprue 2 of the molten resin path up to the three gate holes 5a, 5b, 5c is made common, but the present invention is not limited to this. The three gate holes 5a, 5b and 5c may be supplied with molten resin via separate sprues 2.

  In the above embodiments, the molten resin is supplied from the three pinpoint gates 4a, 4b, 4c under the same molding conditions. However, the present invention is not limited to this. For example, the inflow speed of the molten resin may be changed for each gate. In this way, the formation positions of the weld lines WL1, WL2, etc. can be adjusted. The inflow speed of the molten resin can be changed by, for example, differences in the shapes and sizes of the pinpoint gates 4a, 4b, and 4c, as well as differences in the shapes and sizes of the gate holes 5a, 5b, and 5c.

  In each of the above embodiments, the case of molding the housing of the electrical connector has been described. However, the present invention is not limited to this. For example, the present invention can be applied to the case where the actuator 13 of the electrical connector 1 is molded.

  Moreover, although each said embodiment demonstrated the electrical connector provided with the locking member 12 and the actuator 13, this invention is not restricted to this. For example, the present invention can be applied to an electrical connector that does not include at least one of the lock member 12 and the actuator 13.

  In each of the above embodiments, the electrical connector 1 of the type in which the contact is inserted into the housing after molding has been described. However, the present invention is not limited to this. The present invention can also be applied to an electrical connector that is insert-molded after a contact is inserted into the inner space of a mold.

  Moreover, although each said embodiment demonstrated the electrical connector which has two types of contacts 11a and 11b, this invention is not limited to this. For example, the contact of the electrical connector may be one type.

  Moreover, although each said embodiment demonstrated the type of electrical connector which inserts a flexible printed circuit board (FPC50), this invention is not limited to this. An electric connector of a type into which FFC (Flexible Flat Cable), which is a flat cable made by sandwiching conductors arranged in parallel from above and below by a film-like insulating member, may be inserted.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. The above-described embodiments are for explaining the present invention and do not limit the scope of the present invention. In other words, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  The present invention can be applied to molding insulating members such as housings and actuators of electrical connectors.

  1 electrical connector, 2 sprue, 3a, 3b, 3c runner, 4a, 4b, 4c pinpoint gate, 5a, 5b, 5c, 5d gate hole, 6a, 6b, 6c, 6d gate hole trace, 10 housing, 10a plug Mouth, 10b back door, 11, 11a, 11b contact, 11aa, 11ab, 11ba, 11bb beam member, 11ac, 11bc connecting part, 11ad, 11bd board connecting part, 11ae, 11be contact part, 12 lock member, 13 actuator, 13a cam Axis, 15 Mold, 20 Internal space (cavity), 20a First virtual straight line, 20b Second virtual straight line, 20c, 20d Virtual line segment, 50 Flexible printed circuit board (FPC), 50a Notch, WL1, WL2, WL3, WL4, WL5, WL6, WL7, WL , WL9, WL10, WL11, WL12, WL13, WL14, WL15 weld line

Claims (2)

A molding step of molding the insulating member by filling molten resin into the inner space of the mold from at least four gate holes;
In the molding step,
Two of the four gate holes are formed on a first virtual straight line that bisects the internal space in the longitudinal direction of the internal space;
The remaining two of the four gate holes are formed on a second virtual line that bisects the internal space in the direction of the first virtual line.
Insulating member manufacturing method. An insulating housing having at least four gate hole marks formed as a filling port of a molten resin at the time of molding;
Two of the four gate hole traces are formed on a first virtual straight line that bisects the internal space in the longitudinal direction of the internal space,
The remaining two of the four gate hole traces are formed on a second virtual line that bisects the internal space in the direction of the first virtual line.
Electrical connector.

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