JP5174773B2 - Electrical connection connector, terminal or press part used therefor, and manufacturing method thereof - Google Patents

Description

  The present invention relates to an electrical connection connector, a terminal or press part used therefor, and a manufacturing method (processing method) thereof, and more particularly, a connector suitable for using a press-molded one, a terminal used therefor, or a manufacturing method thereof. In particular, the present invention relates to a method of manufacturing a connector terminal of a control unit installed in an electronic control throttle body installed in an automobile or the like.

  In particular, the present invention relates to a bending technology of a pressed part by a rotary bending press processing method.

  Conventionally, the terminals of the electrical connection connector are manufactured through processes such as punching and bending by pressing. Among them, in the case of a two-stage connector terminal, since the upper stage is molded with one type of mold and the lower stage part is molded with another type of mold, a total of two types of molds are required, and productivity is increased. Gets worse.

  In order to form the two-stage connector terminal with one type of mold, since the upper terminal and the lower terminal are aligned vertically, a technique such as changing the pitch of the terminal tip is required.

  According to Patent Document 1, as a method for converting the position of the terminal tip portion, a U shape is provided in the middle portion of the terminal, the U shape portion is bent upward or downward, and the upward bending or downward bending is performed. Pitch conversion is performed by bending the center of the bent portion into an L shape.

JP 2007-87710 A

  However, in the one described in Japanese Patent Application Laid-Open No. 2007-87710, it is necessary to arrange a U-shaped portion, and the arrangement area for bending the U-shaped portion into an L-shape is large, and the terminal tip portion Is disposed at a right angle of 90 °, there is a problem that the yield of the press is deteriorated, and further, there is a problem that the structure of the mold for bending into an L shape is complicated.

  An object of the present invention is to provide a connector with improved productivity, a terminal used for the connector, a press part, and a manufacturing method (processing method) thereof.

  In order to achieve the above object, the present invention provides a plurality of electrical connection terminal bodies formed of a plurality of press-molded plate-like bodies, and one end of each of the plurality of connection terminals is arranged on the same plane. The other end is arranged separately in two upper and lower stages, and the other end of at least one connection terminal is bent in the vertical direction and further bent in a direction similar to other connection terminals and adjacent to each other. Other connection terminals are configured with a plurality of connection terminal bodies bent in the horizontal direction in the upper space of the terminal bent in the vertical direction, and further bent in the horizontal direction in a direction similar to other terminals. .

  Preferably, the plurality of connection terminal bodies are resin-molded with a resin material leaving at least the other end to constitute an electrical connection connector.

  Preferably, the multiple ends of the connection terminal are surrounded by an insertion plug portion formed by a cylindrical molding portion of molding resin.

The invention of claim 4 is a male connector which is a press-molded plate-like body, and has four connection terminals for electrical connection with the outside,
One end of the connection terminal protrudes so that the end protrudes into a plurality of stages, such as three upper rows and one lower row, and the other end is arranged in the same plane as the terminals of the upper three rows. Connector,
Of the four connection terminals, the first, second and third connection terminals of the one end are on the same plane with respect to the plane on which the other end is arranged. Located in the second and third order,
The fourth connection terminal of the one end portion is located on the lower stage on the plane different from the same plane with respect to the plane in which the other end portion is arranged, and the fourth terminal is connected to the first connection Located directly under the terminal,
The first connecting terminal is bent between one end and the other end on one plane with respect to the plane on which the other end is arranged, and the bent portion is It has a semi-chip shape, and is provided with a crank-shaped part on the same plane with respect to the plane in which the other end is arranged between one end and the bent part,
The fourth connection terminal is bent again in the Z direction perpendicular to the X direction in which the other end of the connection terminal extends between one end and the other end, and then again X It is characterized by comprising a bent portion bent in the direction.

The invention of claim 5 is a male connector which is a press-molded plate-like body, and has four connection terminals for electrical connection with the outside,
One end of the connection terminal protrudes so that the end protrudes into a plurality of stages, such as three upper rows and one lower row, and the other end is arranged in the same plane as the terminals of the upper three rows. Connector,
Of the four connection terminals, the first, second and third connection terminals of the one end are on the same plane with respect to the plane on which the other end is arranged. Located in the second and third order,
The fourth connection terminal of the one end portion is located on the lower stage on the plane different from the same plane with respect to the plane in which the other end portion is arranged, and the fourth terminal is connected to the first connection Located directly under the terminal,
The first connection terminal is linear with respect to one end and the other end thereof,
The fourth connection terminal is bent again in the Z direction perpendicular to the X direction in which the other end of the connection terminal extends between one end and the other end, and then again X A bent portion bent in a direction,
In the space between the bent portion bent in the Z direction orthogonal to the X direction in which the connection terminal extends and the two bent portions, the other end of the first connection terminal is arranged. In the same plane shape with respect to the plane, a composite bent portion including a bent portion that is rotated and bent in the horizontal direction with the semi-recessed circular shape as a starting point of bending is provided.

In invention of Claim 6, in the manufacturing method of the connection terminal used for the connector of Claim 4 or 5,
The connection terminal is integrally processed with a press, and a process of punching a blank integrated with a press frame;
Of the four connection terminals, the step of rotating and bending in a horizontal direction with a counter-circle shape as a starting point of bending with respect to the first connection terminal, and the one with respect to the fourth connection terminal And a step of performing a bending process twice so that the end of the first connection terminal is positioned on the layer surface of the first connection terminal.

  According to a seventh aspect of the present invention, when the horizontal bending according to the third aspect is performed, a half chipped circular portion to be the center of the rotational bending is provided, and a pin is arranged at the center of the half chipped circle. It is characterized by rotating.

  According to the present invention, the semi-notch circular portion becomes the starting point of the initial deformation that occurs at the time of rotational bending, and the reproducibility of the bending deformation is improved by the pin arranged at the center, and stable bending can be performed.

  The invention according to claim 8 is characterized in that, when performing the rotation bending in the horizontal direction according to claim 7, a rotating bending force is applied by pressurizing the bent crank shape portion of the terminal.

  According to the present invention, since no external force is applied to the terminal tip by pressing the crank-shaped portion, no defects such as scratches and dents are generated on the terminal tip. Further, since the external force may be applied to the crank shape portion, there is an advantage that the structural design of the processing force generating portion such as a cam is simplified in designing the press die.

  According to the present invention, there is no need to form a U-shaped portion on a connection terminal or press part used for an electrical connection connector, and there is no need to bend into an L-shape for forming the U-shaped portion. Productivity can be improved.

It is a perspective view of the connection terminal of an electrical connection connector. It is a perspective view before the rotation bending of the connection terminal of an electrical connection connector. It is a perspective view of the rotation bending process part of the connection terminal of an electrical connection connector. It is a processing layout figure of a press. It is a figure of a press completion product. It is a front view of a rotation bending process type | mold. It is a rotation bending process correction | amendment figure. It is a figure of a rotation bending process correction graph. It is a side view of the control unit for motor vehicles. It is a front view of a connector part. It is a front view of the control unit for cars

  Preferred embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a perspective view of a connector showing the configuration of the present invention. FIG. 2 is a perspective view of the connector before rotational bending, and FIG. 3 is a perspective view of a rotational bending portion of the connector.

  FIG. 4 is a layout diagram of press working for rotational bending, and FIG. 5 is a diagram of a finished press product.

  FIG. 6 is a front view of the rotary bending experimental type, and FIG. 7 is a rotational bending correction diagram. FIG. 8 is a diagram of a rotational bending process correction graph.

  FIG. 9 is a side view of the automobile control unit, and FIG. 10 is a front view of the connector portion. FIG. 11 is a front view of the automobile control unit.

  The configuration of the connector will be described with reference to FIG.

  In the connector of the present embodiment, the metal terminal A3, the metal terminal B4, and the metal terminal C5 are arranged in the upper stage of the two-stage connector, and the metal terminal D6 is arranged in the lower stage so that the tip of the terminal is arranged in an L shape. The base has a bent shape that is bent in the Z direction and then bent in the X direction again.

  In addition, a half chipped circular portion 29 is installed at the base of the metal terminal A3, and a crank shaped portion 30 is installed at an intermediate point between the metal terminal A3 and the half cut circular portion 29.

  Next, the rotational bending method will be described with reference to FIG.

  First, when the terminal of the upper metal terminal A3 is press-deployed so that the metal terminal D6 can be bent at the lower position, the metal terminal A3a is horizontally expanded outward by an angle θ (35 °). Place at the position.

  Next, the rotational bending method will be described with reference to FIG.

  After the metal terminal D6 is bent in the Z direction, the metal terminal A3 at the position of the metal terminal A3a is rotationally bent after being arranged in the lower stage so as to be bent again in the X direction. The bending portion is bent in the horizontal direction by an angle θ (35 °) by applying a processing force to the crank shape portion 30 with the shape portion 29 as a starting point of bending, and the rotation bending processing is completed by placing it on the metal terminal A3b. To do.

  Next, a rotational bending method in press working will be described with reference to FIGS.

  Metal terminals are arranged on the press frame 7 and subjected to punching and bending. The metal terminal A3 is disposed outside the angle θ, and the metal terminal D6 disposed in the lower stage is disposed at the position of the metal terminal D6a in order to complete the bending process before the metal terminal A3a is rotationally bent. Is done.

  First, the metal terminal D6a is subjected to L-bending twice, and the bending process is completed like the metal terminal D6b.

  Next, the metal terminal A3a horizontally developed outside the angle θ (35 °) is moved forward by rotating the metal plate A3a to the position of the bending punch 8b by rotating and bending the metal terminal A3a horizontally by the angle θ (35 °). Bend back to the position of terminal A3b.

  Finally, the press-formed product 9 is divided from the press frame 7 and taken out.

  Next, the rotational bending method will be described with reference to FIG.

  When performing the rotary bending in the horizontal direction, a semi-cut circle-shaped portion 29 to be the center of the rotary bend is installed, and by rotating the central pin 15 at the center of the half cut circle, the rotary portion The accuracy of the trajectory can be improved.

  In addition, a crank-shaped portion 30 that is bent at the terminal is provided as a shape for applying a rotational bending force when the rotational bending in the horizontal direction is performed, and the rotational bending punch 13 is disposed at the corner portion. The rotary bending punch 13 is advanced by the punch stroke 14 to apply a rotary bending force 17.

  Next, the rotational bending method will be described with reference to FIGS.

  Strictly speaking, the ideal rotation center 18 that is the center of the semi-circular circular portion 29 considered as the rotation bending center when performing the rotation bending process in the horizontal direction is strictly the actual rotation center 19 that is the actual center axis. There is a misalignment. Therefore, in order to obtain the actual rotation radius 21 corresponding to the actual rotation center 19 corresponding to the actual rotation center 19, bending is performed using an experimental mold, and the locus of the actual rotation center 19 resulting from the bending is measured and graphed. As a result, the difference between the ideal rotation center 18 that is the center of the half chipped circular portion 29 considered as the rotation bending center and the actual rotation center 19 that is the center of the actual rotation portion is obtained, and position correction is possible. . 20 is an ideal turning radius.

  Next, the rotational bending method will be described with reference to FIG.

  When the development drawing of the press working is drawn, the development position 22 is a position where the terminal is rotated to the right by the rotational bending angle θ27 from the normal position 24 around the ideal rotation center 18.

  In the result of the rotary bending process by the experimental process shown in FIG. 6, the actual position 23 is shifted from the normal position 24 and a deviation occurs. When the longitudinal direction of the terminal whose normal direction is the normal position 24 is the X ′ direction and the direction perpendicular to the X ′ direction is the Y ′ direction, the actual position 23 and the normal position 24 are misaligned. The amount becomes an X ′ direction accuracy 25 and a Y ′ direction accuracy 26.

  Next, the rotational bending method will be described with reference to FIG.

  By plotting the results of the rotational bending angles of 15 °, 30 °, and 45 ° by the experimental processing shown in FIG. 6, a line of X ′ direction accuracy and Y ′ direction accuracy can be drawn. For example, when performing 35 ° rotation bending, the X ′ direction accuracy is −0.56, and the Y ′ direction accuracy is −0.95. By adding the X ′ direction accuracy and the Y ′ direction accuracy to the press development view, the actual position 23 approaches the normal position 24, thereby improving the dimensional accuracy.

  Next, the control unit applied to the present embodiment will be described with reference to FIGS.

  The control unit 1 is a control unit installed in an electronically controlled throttle body or the like installed in an automobile or the like, and is used for a mechanism for controlling the air flow rate of the fuel injection device of the automobile by a motor.

  The connector 2 is composed of metal terminals A to D made of a material having high thermal conductivity such as a copper material formed by pressing, and a resin portion in which the metal terminal is insert-molded. Is covered with resin.

  The metal terminal A33, the metal terminal B4, the metal terminal C5, and the metal terminal D6 are insert-molded in the resin of the overmold 32. From the connector 2 side, the metal terminal A33, the metal terminal B34, and the metal terminal on the board portion 31 side. C35 and the metal terminal D36 are connected, and the connector 2 and the board part 31 can be electrically connected.

  Next, the function and effect of this embodiment will be described below.

  In this embodiment, since the center pin 15 is arranged at the center of the half-notch circular portion 29 and the half-notch circular shape portion 29, when the bending force is applied, the center pin 15 is moved to the temporary bending center. Since bending deformation occurs, the reproducibility of bending deformation can be stabilized.

  In this embodiment, since the crank shape portion 30 is installed as a shape for applying a bending force, it is easy to dispose the cam mechanism in the mold structure design, and the mold can be manufactured at low cost.

  The points of the present embodiment are summarized as follows.

  An object is to provide a connector with improved productivity, a terminal used for the connector, or a pressed part, and a method for manufacturing the same.

  In an embodiment, in order to achieve the above object, a plurality of electrical connection terminal bodies formed of a plurality of press-molded plate-like bodies (metal terminals AD), the plurality of connection terminals One end (reference numeral 33-36) is arranged in the same plane, the other end (reference numeral 3-6) is arranged in two upper and lower stages, and other than at least one connection terminal (metal terminal D) The end (reference numeral 6) is bent in the vertical direction and further bent in a direction similar to other connection terminals, and other adjacent connection terminals (metal terminals A, reference numerals 3, 3a, 3b) are bent in the vertical direction. A plurality of connection terminal bodies that are bent in the horizontal direction (reference numerals 29, 30) in the upper space of the bent terminal (gold-Germany terminal D) and further bent in the horizontal direction in the direction of learning from other terminals. ing.

  Preferably, the plurality of connection terminal bodies are resin-molded with a resin material leaving at least the other end to constitute an electrical connection connector (FIGS. 9, 10, and 11).

  Preferably, the multiple ends of the connection terminal are surrounded by an insertion plug portion formed by a cylindrical molding portion of a molding resin (FIGS. 9, 10, and 11).

A male connector that is a press-molded plate-like body, having four connection terminals for electrical connection to the outside, and one end of the connection terminal is It is a connector that protrudes in a plurality of stages such as an upper three rows and a lower one row, and the other end protrudes so as to be arranged in the same plane as the terminals of the upper three rows. The first, second, and third connection terminals of the one end portion are on the same plane with respect to the plane on which the other end portion is arranged, and are arranged in the first, second, and third order in the upper stage. The fourth terminal of the one end is located in a lower stage located on a plane different from the same plane with respect to the plane in which the other end is arranged, and the fourth terminal The first connection terminal is located directly below one connection terminal and the other end of the first connection terminal. The fourth connection terminal is bent in the Z direction perpendicular to the X direction in which the other end of the connection terminal extends between one end and the other end of the fourth connection terminal. In the space between the bent portion that is bent again in the X direction, the bent portion that is bent in the Z direction orthogonal to the X direction in which the connection terminal extends, and the two bent portions, The first connection terminal is a composite formed of a bent portion that is rotated and bent in the horizontal direction with the half-notch circle shape being the starting point of bending in the same plane with respect to the plane on which the other end is arranged. And a bent portion.
According to this embodiment, it is not necessary to arrange a U-shaped part, an arrangement area for bending the U-shaped part into an L-shape is unnecessary, and a terminal tip part needs to be formed at a right angle of 90 °. There is no problem that the yield of the press deteriorates. Furthermore, a metal mold for bending in an L shape is unnecessary, and productivity can be improved.

1 Control unit 2 Connector 3, 3a, 3b, 33 Metal terminal A
4,34 Metal terminal B
5,35 Metal terminal C
6, 6a, 6b, 36 Metal terminal D
7 Press frame 8a, 8b Bending punch 9 Press-formed product 10 Metal terminal E
11 Metal terminal F
12, 27 Rotation bending angle θ
13 Rotary bending punch 14 Punch stroke 15 Center pin 16 Bending die 17 Processing force 18 Ideal rotation center 19 Actual rotation center 20 Ideal rotation radius 21 Actual rotation radius 22 Deployment position 23 Actual position 24 Regular position 25 X 'direction accuracy 26 Y 'Directional accuracy 28 Rotation bending position correction graph 29 Half-notch circular part 30 Crank part 31 Substrate part 32 Overmold

Claims (4)

A male connector which is a press-molded plate-like body, which is an electrical connection connector having four connection terminals for electrical connection with the outside,
One end of the connection terminal protrudes so that the end protrudes into a plurality of stages, such as three upper rows and one lower row, and the other end is arranged in the same plane as the terminals of the upper three rows. The first, second, and third connections of the one end on the same plane with respect to the plane in which the other end of the four connection terminals is arranged. The terminal is positioned in the first, second, and third order on the upper stage, and the fourth end of the one end is on the lower stage that is on a plane different from the same plane with respect to the plane on which the other end is arranged. The connection terminal is located, the fourth terminal is located directly below the first connection terminal, the first connection terminal is between one end and the other end, and the other end is One bent portion that is bent on the same plane with respect to the arranged plane, and the bent portion has a semi-chip shape. The crank connection portion is provided between the one end portion and the bent portion on the same plane with respect to the plane on which the other end portion is arranged, and the fourth connection terminal has one end thereof. A bent portion that is bent in the X direction again after being bent in the Z direction perpendicular to the X direction in which the other end of the connection terminal extends between the first end and the other end. Electrical connection connector. The manufacturing method of the connection terminal used for the electrical connection connector according to claim 1, wherein the connection terminal is integrally processed by a press, and a blank integrated with the press frame is punched out of the four connection terminals. The first connection terminal is connected to the first connection terminal at the one end portion of the first connection terminal with respect to the fourth connection terminal. And a step of bending the terminal twice so as to be positioned on the layer surface of the terminal. 3. An electric device comprising: a half chipped circular portion that is to be the center of rotational bending when rotating in the horizontal direction according to claim 2; and a pin disposed at the center of the semicircle to rotate. Of manufacturing a connection terminal used for a general connection connector. A connecting terminal for use in an electrical connection connector, wherein the bending force is applied by pressurizing a bent crank shape portion of the terminal when the bending in the horizontal direction according to claim 3 is performed. Production method.

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