JP2018181529A - Method of manufacturing connector with board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of manufacturing a connector with board, in which multiple terminal fittings can ensure tenacity for the back wall of a hood.SOLUTION: A hood 21 is installed in a connector side jig 40 while directing the opening direction downward, and multiple support pieces 43 projecting from the top face of the connector side jig 40 abut on and support the shoulder 64 at the mounting part 63 of each terminal fitting 60. At this time, the whole connector side jig 40 including each support piece 43 does not abut on nor support the hood 21. When the upper part of each terminal fitting 60 faces each connection hole 91 of a circuit board 90, and the mold surface of a board side jig 50 set above the circuit board 90 presses the plate surface thereof, the board connection 61 at an upper part of each terminal fitting 60 is inserted into the corresponding connection hole 91 of the circuit board 90 and connected.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a method of manufacturing a connector with a substrate.

  The substrate connector disclosed in Patent Document 1 includes a hood portion having a back wall. A plurality of attachment holes are formed in the back wall. In each of the mounting holes, a wide receiving portion that protrudes on both sides is press-fit in a longitudinally central portion (vertically central portion) of the terminal fitting formed linearly. The receiving portion has a jig receiving surface that faces the inside of the hood portion in an exposed state. Each terminal fitting has a terminal connection portion at one end in the length direction and a substrate connection portion at the other end in the length direction. The board connection portion protrudes from the back wall to the opposite side to the inside of the hood portion, and is electrically connected to the circuit board.

  When the circuit board is attached, the press-fit jig is inserted into the hood portion, and the tip end surface of the press-fit jig abuts on the upper surface of the back wall of the hood portion. Further, the pressing surface of the press-in jig abuts on the jig receiving surface of the receiving portion. In this state, the board connection portion of each terminal fitting is disposed to face each through hole of the circuit board, and the press-fitting jig is moved to the circuit board side. Then, the back wall of the hood portion and the jig receiving surface of the receiving portion of each terminal fitting are pressed by the press-in jig, and the board connecting portion of each terminal fitting is inserted into and connected to the corresponding through hole of the circuit board.

Patent No. 4211622 gazette

  In the above case, the press-fitting jig is set to simultaneously press the back wall of the hood portion and the receiving portions of the respective terminal fittings. However, if a dimensional error occurs in the press-in jig, the pressing surface may not be in contact with each receiving portion even if the front end surface of the press-in jig is in contact with the back wall. Temporarily, if the pressing surface of the press-in jig does not abut on each receiving part, in the movement process of the press-in jig, pressing force is applied only to the back wall, and each receiving part is displaced relative to the back wall and held There is a problem that the power can not be secured sufficiently.

  This invention is completed based on the above situations, Comprising: The manufacture of the connector with a board | substrate with which the terminal metal fitting mounted | worn with the back wall of a food | hood part can ensure holding power with respect to a back wall Intended to provide a method.

  In the method of manufacturing a connector with a board according to the present invention, a wide-shaped mounting portion which protrudes on both sides in the vertical direction of the terminal fitting in a straight line shape is press-fit into a plurality of holes formed in the vertical direction The shoulder portion of the mounting portion of each terminal fitting is exposed in the hood portion, the opening direction of the hood portion is directed downward, and the upper portion of each terminal fitting is outside the hood portion and above the back wall The lower part of each terminal fitting is protruded in the hood part and below the back wall, and the hood part is installed in the connector side jig in that state, and the upper surface of the connector side jig A plurality of support pieces protruding like a comb are made to enter between the lower parts of the respective terminal fittings in the hood part, and the upper end of each support piece is supported in contact with the shoulder part of the mounting part Said connector side clamp including a piece The entire circuit board is not supported in contact with the hood, and then the circuit board is installed on the upper side of each terminal fitting, and the upper side of each terminal fitting is exposed to the plurality of connection holes of the circuit board The substrate side jig disposed above the substrate and the connector side jig are made to approach each other, the plate surface of the circuit board is pressed by the mold surface of the substrate side jig, and the upper portions of the terminal fittings are It is characterized in that it is inserted and connected to the corresponding connection hole of the circuit board.

  The hood portion is installed in the connector-side jig with the opening direction facing downward, so that each support piece of the connector-side jig abuts and supports the shoulder portion of the mounting portion of each terminal fitting, while each support piece is Since the entire connector-side jig including the connector does not contact and support the hood portion, the terminal fittings are stably supported by the connector-side jig. As a result, the state in which the mounting portion of each terminal fitting is press-fit into each hole of the back wall is well maintained, and the holding power of each terminal fitting to the back wall can be secured.

It is a disassembled perspective view for demonstrating the manufacturing method of the connector with a board | substrate which concerns on Example 1 of this invention. It is a perspective view of FIG. It is sectional drawing which shows the state in which the connector was set to the connector side jig | tool. It is a top view of the state of FIG. It is a top view which shows the state by which the board | substrate side jig | tool was arrange | positioned upwards from the state of FIG. It is a top view which shows the state which the board | substrate side jig | tool spaced apart from the circuit board after attachment of a circuit board. It is an expanded sectional view which shows the state in which the terminal metal fitting was mounted | worn with the back wall.

Preferred embodiments of the present invention are shown below.
The shoulder portion of the mounting portion of each of the terminal fittings may be disposed within the hood portion so as to be one step lower than the lower surface of the back wall. According to this, it is possible to reliably realize a state in which each support piece of the connector-side jig abuts and supports the shoulder portion of the mounting portion of each terminal fitting but does not abut and support the hood portion.

Example 1
Example 1 will be described below with reference to FIGS. 1 to 7. Example 1 relates to a method of manufacturing the connector 10 with a substrate. In the following description, the reference in the vertical direction is based on the state at the time of manufacture of attaching the circuit board 90 to the connector 10, and may differ from the mounting state (use state) of the connector 10.

  The substrate-mounted connector 10 includes a connector housing 20 and a plurality of terminal fittings 60. Each terminal fitting 60 is connected to the circuit board 90.

  As shown in FIG. 1, the circuit board 90 is a printed wiring board having a predetermined rigidity, and has a plurality of connection holes 91 penetrating in the board thickness direction (vertical direction). Each connection hole 91 is a so-called through hole, and a conductor (not shown) is formed on the inner surface.

  The connector housing 20 is made of synthetic resin and, as shown in FIG. 3, has a hood portion 21 opened downward. The hood portion 21 has a pair of long side walls 22 long in the left-right direction (left-right direction in FIG. 4), a pair of short side walls 23 short in the front-rear direction (thickness direction in FIG. 4), It is formed in a rectangular tube shape by having a back wall 24 which is disposed continuously with the upper end (the back end) of each long side wall 22 and along the left-right direction and the front-rear direction. Further, the connector housing 20 is formed with leg portions 25 projecting upward from the vicinity of the four corners of the back wall 24 of the hood portion 21. As shown in FIG. 6, the upper end surface of each leg 25 is an installation surface 26 on which the circuit board 90 attached to the connector 10 is abutted and installed.

  A mating connector housing (not shown) is fitted in the hood portion 21. As shown in FIG. 1, substantially cylindrical cam followers 27 are provided on the inner surface of the long side wall 22 on the front and rear sides of the hood portion 21 so as to project therefrom. A lever (not shown) mounted on the mating connector housing is engaged with the cam follower 27 and the connector housing is fitted by rotating the lever in this state.

  As shown in FIG. 3, a plurality of holes 28 (only one is shown in FIG. 3) are formed in the back wall 24 so as to penetrate in the thickness direction (vertical direction). The holes 28 are aligned in the left-right direction and the front-rear direction so as to correspond to the connection holes 91 of the circuit board 90. As shown in FIG. 7, at the upper end portion of each hole 28, a recessed portion 29 which is widened in a stepped shape in the left-right direction and opened in the upper surface of the back wall 24 is formed. The lower surface of the back wall 24 has a back surface portion recessed one step from the peripheral edge as a reference surface.

  Each terminal fitting 60 is provided at each position corresponding to each hole 28 of the back wall 24. As shown in FIG. 7, the terminal fitting 60 is a so-called press-fit terminal, and is inserted into and connected to each hole 28 of the circuit board 90. Specifically, the terminal fitting 60 has a rectangular cross-sectional shape extending in a straight line in the vertical direction, has a board connecting portion 61 at its upper end, and has a terminal connecting portion 62 at its lower end, A mounting portion 63 is provided at a vertically middle portion between the connection portion 62 and the substrate connection portion 61. The mounting portion 63 of each terminal fitting 60 is press-fitted and fixed in each hole 28 of the back wall 24. At this time, the board connection portion 61 is disposed above the back wall 24 outside the hood portion 21, and the terminal connection portion 62 is disposed below the back wall 24 inside the hood portion 21.

  A press-fit portion 67 is formed on a portion close to the upper end of the substrate connection portion 61 so as to expand to the left and right. The press-fit portion 67 is capable of bending and deforming, is elastically inserted into the connection hole 91 of the circuit board 90, and maintains a state in which it abuts on the inner surface of the connection hole 91 by its elastic restoring force.

  Further, the mounting portion 63 is wider than the terminal connection portion 62 and the substrate connection portion 61, and has portions protruding to the left and right sides. The lower left and right side surfaces of the mounting portion 63 face the lower surface (reference surface) of the back wall 24 at the time of mounting, and are disposed substantially horizontally in the left-right direction at a position one step lower than the lower surface of the back wall 24 The shoulder portions 64 can be in contact with the support pieces 43 of the connector side jig 40.

  At the upper end of the mounting portion 63, a pair of retaining pieces 65 are formed that project largely on the left and right sides. Each retaining piece 65 is capable of being fitted in the recess 29 of each hole 28 of the back wall 24. Further, the upper left and right side surfaces of each retaining piece 65 face the upper surface of the back wall 24 at the time of mounting, are arranged substantially horizontally in the left-right direction, and are pressed by a terminal mounting jig not shown. Further, at the lower end portion of the mounting portion 63, a plurality of claw-like biting projections 66 which are slightly protruded to the left and right sides are formed.

  Next, the structure of a jig (mold) used in the method of manufacturing the connector with substrate 10 will be described. As shown in FIG. 2, the jig comprises a connector-side jig 40 disposed below the connector 10 and a substrate-side jig 50 disposed above the connector 10.

  As shown in FIGS. 1 and 3, the connector-side jig 40 includes a main block 41 in the form of a square block, a sub-base 42 in the form of a square block projecting from the upper surface of the main base 41, and a sub-base. And a plurality of support pieces 43 protruding from the upper surface of the portion 42. Each support piece 43 has a rectangular cross-sectional shape that is slightly longer in the front-rear direction, and extends in the vertical direction, and is formed in a comb shape as a whole. As shown in FIG. 3, when the connector 10 is set in the connector-side jig 40, each support piece 43 is inserted into the hood portion 21 together with the sub-base portion 42, and the terminal connection portion 62 of each terminal fitting 60. Enter in between. The upper end portion of each support piece 43 is a flat support surface 44 along the left and right direction and the front and back direction, and abuts on the shoulder portion 64 of the mounting portion 63 to support each terminal fitting 60 from below. . The upper and lower dimensions of the support piece 43 are sufficiently longer than the upper and lower dimensions of the terminal connection portion 62.

  As shown in FIGS. 1 and 5, the substrate-side jig 50 has a square block-shaped opposing base portion 51 and a flat rectangular block-like pressing portion 52 provided on the lower surface of the opposing base portion 51. ing. In the lower surface of the pressing portion 52, an insertion hole 53 through which the substrate connection portion 61 of each terminal fitting 60 can be inserted is formed at a position corresponding to each terminal fitting 60. Further, the lower surface of the pressing portion 52 is configured as a flat pressing surface 54 along the left and right direction and the front and back direction around the opening of each insertion hole 53, and contacts the upper surface of the circuit board 90 to press the circuit board 90 downward. It is supposed to

Next, a method of manufacturing the substrate-mounted connector 10 and its effects will be described.
The mounting portions 63 of the respective terminal fittings 60 are inserted into the respective holes 28 of the back wall 24 from above at the outside of the hood portion 21 in a press-fit state. Further insertion of each terminal fitting 60 is stopped by the respective retaining pieces 65 being fitted and held in the recessed portions 29 of the respective holes 28, and the respective biting projections 66 are formed on the inner surfaces of the respective holes 28. By being bitten and locked, the back wall 24 is firmly held (see FIG. 7).

  Subsequently, the connector 10 with the terminal fittings 60 attached thereto is set in the connector-side jig 40, and the hood 21 whose opening direction is directed downward is covered on the support pieces 43 and the sub base 42 (see FIG. 3 and FIG. 4). Then, each support piece 43 is inserted into the hood portion 21 together with the sub base portion 42, the terminal connection portion 62 of each terminal fitting 60 is disposed between each support piece 43, and the support surface 44 of each support piece 43 is each terminal It abuts on the shoulder 64 of the mounting portion 63 of the fitting 60. In the case of the first embodiment, each support piece 43 is disposed so as to straddle and abut on the shoulder portion 64 of each adjacent terminal fitting 60 in the left-right direction and / or the front-rear direction.

  In a state where the connector 10 is set in the connector side jig 40, the opening edge of the hood portion 21 is disposed apart from the upper surface of the main base, and the inner surface of the hood portion 21 is also separated from the sub base portion 42 and each support piece 43 (See FIG. 3). Ultimately, the hood portion 21 (connector housing 20) is disposed in non-contact with the connector-side jig 40, and is supported by the connector-side jig 40 via the respective terminal fittings 60.

  Subsequently, the circuit board 90 is placed on the respective terminal fittings 60 from above, and the board connection portions 61 of the respective terminal fittings 60 are shallowly inserted into the respective connection holes 91 of the circuit board 90. Further, the board side jig 50 is disposed above the circuit board 90, and the upper end of the board connection portion 61 of each terminal fitting 60 is made insertably visible in each insertion hole 53 of the pressing portion 52 of the board side jig 50. In this state, the substrate side jig 50 is lowered (see FIG. 5) to make the substrate side jig 50 and the connector side jig 40 approach to each other. Then, the circuit board 90 is pressed by the pressing surface 54 of the pressing portion 52 and descends together with the board side jig 50. Then, the circuit board 90 is held in contact with the mounting surface 26 of each leg 25 to stop further lowering, and the constant distance between the circuit board and the back wall 24 is maintained. At the same time, the press-fit portions 67 of the terminal fittings 60 are inserted into the holes 28 of the circuit board 90 in an elastically contracted state. Thereby, each terminal fitting 60 is connected to the conductor of each hole 28 via the press-fit portion 67. Thereafter, the board-side jig 50 is separated upward from the circuit board 90 (see FIG. 6), and the connector-side jig 40 is also removed, whereby the connector 10 as a finished product is taken out.

  By the way, while the board side jig 50 descends, each support piece 43 of the connector side jig 40 receives exclusively the pressing force of the board side jig 50 and has a certain height on the shoulder portion 64 of each terminal fitting 60. Maintain contact with the position. For this reason, the relative position of the connector side jig 40 and each terminal fitting 60 does not substantially change, and the descent amount of the circuit board 90 with respect to each terminal fitting 60 is also maintained at a constant value. As a result, the state in which the press-fit portions 67 of the respective terminal fittings 60 are connected to the conductors of the respective holes 28 can be reliably realized.

  Assuming that the connector-side jig 40 has a portion in contact with and supported by the hood portion 21 (connector housing 20) unlike the first embodiment, the pressing force of the substrate-side jig 50 causes the hood portion 21 to When it acts, the back wall 24 also descends with the descent of the substrate side jig 50, and there is a concern that each terminal fitting 60 may be displaced upward (withdrawal direction) with respect to the back wall 24. However, in the case of the first embodiment, since the connector side jig 40 does not have a portion including the support pieces 43 and supported in contact with the hood portion 21, the pressing force of the substrate side jig 50 causes the hood portion 21 to It does not act directly, and can prevent each terminal fitting 60 from being misaligned with respect to the back wall 24 in the removal direction. As a result, the state in which the mounting portion 63 of each terminal fitting 60 is press-fit into each hole 28 in the back wall 24 can be favorably maintained, and the holding force of each terminal fitting 60 to the back wall 24 can be secured. .

  Further, in the first embodiment, as shown in FIGS. 3 and 7, in the hood portion 21, the shoulder portion 64 of the mounting portion 63 of each terminal fitting 60 is one step lower than the lower surface of the back wall 24. Since it arrange | positions, while each supporting piece 43 of the connector side jig | tool 40 contact | abuts and supports to the shoulder part 64 of the mounting part 63 of each terminal metal fitting 60, the state which is not contact | abuted and supported to the food | hood part 21 can be ensured. .

Other Embodiments
Other embodiments will be briefly described below.
(1) In contrast to the first embodiment, the connector-side jig may be moved to the substrate-side jig side (upward) to attach the circuit board. In addition, both the connector-side jig and the substrate-side jig may be moved closer to each other.
(2) The connector-side jig may have a portion that lightly abuts on the hood portion to such an extent that the hood portion is not supported.
(3) The circuit board may be set to the board side jig from the start of attachment to each terminal fitting.

DESCRIPTION OF SYMBOLS 10 ... Connector 20 ... Connector housing 21 ... Hood part 24 ... Back wall 28 ... Hole 40 ... Connector side jig 43 ... Support piece 50 ... Board side jig 60 ... Terminal metal fitting 63 ... Mounting part 64 ... Shoulder part (shoulder part)
90 ... circuit board 91 ... connection hole

Claims (2)

Insert the wide-shaped mounting parts that project on both sides in the vertical direction of the terminal fitting in the vertical direction into the plurality of holes formed in the vertical direction in the back wall of the hood part, and the shoulder of the mounting part of each terminal fitting Expose the part in the hood part,
The opening direction of the hood portion is directed downward, and the upper portion of each of the terminal fittings is projected outside the hood portion and above the back wall, and the lower portion of each of the terminal fittings is in the hood portion and back wall In the lower part of the
The hood portion is installed on the connector side jig, and a plurality of support pieces protruding like a comb on the upper surface of the connector side jig are made to enter between the lower portions of the respective terminal fittings in the hood portion, and each support piece And supporting the upper end portion of the connector in contact with the shoulder portion of the mounting portion, while preventing the entire connector-side jig including the support pieces from abutting and supporting the hood portion;
A circuit board is disposed on the upper portion of each of the terminal fittings, and an upper portion of each of the terminal fittings is faced to a plurality of connection holes of the circuit board, and a substrate side jig and the connector side jig disposed above the circuit board Tools are brought close to each other, the plate surface of the circuit board is pressed by the mold surface of the substrate side jig, and the upper portions of the respective terminal fittings are inserted into and connected to the corresponding connection holes of the circuit board. Of manufacturing a connector with a printed circuit board.   The method according to claim 1, wherein the shoulder portion of the mounting portion of each of the terminal fittings is disposed in the hood portion such that the shoulder portion is lower than the lower surface of the back wall.

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