JP5768708B2 - connector - Google Patents

Description

  The present invention relates to a connector of a type connected to a printed circuit board.

  As an example of a connector connected to a printed circuit board, one described in Patent Document 1 below is known. In this structure, a board mounting portion on which a printed circuit board is mounted and a connector fitting portion on which a mating connector is fitted are formed on mutually orthogonal surfaces of the connector housing, while a plurality of L-shaped tabs are formed. The terminal has a structure in which one end and the other end are embedded in a form facing the board mounting portion and the connector fitting portion.

  This type of connector is often formed by insert molding because it is difficult to bend it into an L shape after mounting a straight tab-like terminal on the housing. In general, by performing primary insert molding using a tab-shaped terminal bent in advance in an L-shape as an insert member, an assembly having a tab-shaped terminal attached to a core is formed, and the assembly is further used as an insert member. The connector is formed by performing the secondary insert molding.

JP 2008-18633 A

By the way, insert molding often depends on manual work such as setting an insert member in a molding die, and this leads directly to an increase in manufacturing cost.
The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a connector that can be manufactured in a form with reduced insert molding.

The connector according to the present invention includes a connector housing in which a first recess in which a printed circuit board is mounted and a second recess in which a mating connector is fitted are opened on different surfaces through a partition. a plurality of tab-shaped terminal, and the core with the tab-shaped terminal is mounted in a predetermined arrangement, a mounting hole in which the core provided in the partition wall is fitted, is provided, the tab-shaped terminal After the inserted core is inserted into one of the two recesses, the core is fitted into the mounting hole of the partition wall while one end of the tab-like terminal is advanced into the other recess. And the concave portion on the side where the core on which the tab-like terminal is mounted is first inserted is provided with a sliding contact surface on which the core can slide in a position orthogonal to the partition wall, The sliding contact surface and the facing surface of the core are engaged with each other. Where the guide which slides guided toward the serial core to the attachment hole is provided with the features.

  The connector is manufactured as follows. First, a plurality of tab-like terminals are attached to the core in a predetermined arrangement. Next, the core on which the tab-like terminal is mounted is inserted into one recess in the connector housing, and then the same core is inserted while one end of the tab-like terminal passes through the mounting hole of the partition wall and enters the other recess. A connector having a configuration in which one end and the other end of the tab-like terminal respectively face the corresponding recesses is manufactured by being fitted into the mounting holes.

For example, if the tab-shaped terminals are directly inserted through the partition wall by press-fitting or the like, insert molding is not necessary, but with this means, it is difficult to arrange a plurality of tab-shaped terminals in a predetermined alignment. In that respect, in the present invention, a plurality of tab-shaped terminals are mounted in advance on the core, and the core is mounted on the connector housing by fitting. It is possible to reduce the manufacturing cost by avoiding the insert molding at least in the process of mounting the core after securing the arrangement.
After inserting the core with the tab-shaped terminal into a predetermined recess, engage the guide provided on the sliding contact surface of the recess with the surface facing the core, and continue to slide the core along the guide. By moving the same, the core is guided to the mounting hole of the partition wall. The operation of fitting the core into the mounting hole of the partition wall can be performed accurately and quickly.

The following configuration may also be used.
(1) While the tab-shaped terminal is bent into an L shape, the first recess and the second recess in the connector housing are formed on surfaces orthogonal to each other. Compared with the case where the first recess and the second recess are formed in a so-called back-to-back configuration, a connector in which the overall length of the connector housing is shortened can be obtained.
(2) The tab-shaped terminal is attached to the core by press-fitting. The connector can be manufactured without any insert molding, and the manufacturing cost can be further reduced.

  According to the connector of the present invention, it is possible to manufacture at low cost while ensuring a predetermined arrangement of tab-like terminals.

The top view of the connector housing which concerns on Embodiment 1 of this invention Front view Longitudinal sectional view showing the operation of mounting tab-shaped terminals on the core Longitudinal sectional view of an assembly with tab-shaped terminals attached to the core Side view Plan view Front view Longitudinal sectional view showing initial mounting operation for connector housing of assembly Longitudinal section of the connector when assembly is complete Plan view Front view FIG. 5 is a longitudinal sectional view of an assembly in which tab-shaped terminals are mounted on the core according to the second embodiment of the present invention. Longitudinal sectional view showing initial mounting operation for connector housing of assembly Longitudinal section of the connector when assembly is complete

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 9 and the like, the connector according to the first embodiment includes a connector housing 10, two tab-like terminals 30, and a core 40 to which both tab-like terminals 30 are attached.

  The connector housing 10 (hereinafter simply referred to as the housing 10) is formed by injection molding of a synthetic resin material. As shown in FIGS. 1, 2, and 8, the connector housing 10 is formed in a shape that is long in the front-rear direction as a whole. A board mounting portion 11 on which a printed board P (see FIG. 9) is mounted on the side and a connector fitting section 12 on which a mating connector (not shown) is fitted on the front side are arranged through a partition wall 13. Is formed.

  The substrate mounting portion 11 is formed in a square box shape with an upper opening, and the front wall of the substrate mounting portion 11 is the partition wall 13 described above. The inside of the substrate mounting portion 11 is a first recess 15, and the peripheral surface thereof is formed in a stepped shape in which the lower region in the depth direction is slightly smaller in cross-sectional shape than the upper region. (Step 16). However, at the center width position of the front wall portion of the step portion 16, the cut portion 17 is formed over a predetermined width. The printed circuit board P is closely fitted in the first recess 15, and its four edges can be placed on the step surface 16 </ b> A described above.

The connector fitting portion 12 is formed in a rectangular tube shape opened forward from the outer surface of the partition wall 13, and the inside of the connector fitting portion 12 is a second recess 20. As described above, the mating connector is fitted to the connector fitting portion 12 from the front, and the upper surface of the connector fitting portion 12 is engaged with a lock arm provided in the mating connector. Thus, a locking projection 21 is provided for locking the connector with the counterpart connector in a properly fitted state.
As shown in FIG. 2, the back surface of the second recess 20 (partition wall 13) has a mounting hole 23, which is a rectangle that is horizontally long in front view, penetrating toward the first recess 15 at a position slightly below the center. It is formed with. The mounting hole 23 functions as a press-fitting hole for press-fitting a core 40 to be described later.

The tab-like terminals 30 are formed by, for example, pressing a metal plate having excellent conductivity, and two connectors are prepared for each connector. As shown in FIG. 3, the tab-shaped terminal 30 is formed by straightly bending the terminal material at a position closer to the rear end than the center in the length direction, so that the front side is the horizontal portion 32 and the rear side is upward. It is formed in an L shape that becomes the vertical portion 31.
The tip of the vertical portion 31 is a board connection end 33 connected to the printed circuit board P, while the tip of the horizontal portion 32 is a terminal connected to a mating female terminal (not shown) housed in the mating connector. It is a connection end 34.

  The core 40 to which the two tab-like terminals 30 are mounted is formed by injection molding with a synthetic resin material, and as shown in FIGS. 6 and 7, the front surface of the lower region of the first recess 15 described above. A press-fit portion 42 that fits tightly into the mounting hole 23 is formed on the front surface of the main body portion 41 that fits tightly into the cutout portion 17 formed in FIG.

More specifically, as shown in FIG. 8, when the main body portion 41 of the core 40 is placed on the bottom surface of the first recess 15 in the substrate mounting portion 11 so as to correspond to the front surface of the cutting portion 17. In addition, the press-fit portion 42 is positioned on the same axis as the mounting hole 23. The bottom surface of the first recess 15 is a slidable contact surface 18 on which the main body 41 of the core 40 is placed and slidably contacted.
Further, when the main body portion 41 of the core 40 is properly fitted in the cut portion 17, as shown in FIG. 10, the upper surface of the main body portion 41 is positioned flush with the step surface 16A, and the main body portion A mounting surface 19 having a rectangular frame shape is formed by combining the upper surface of 41 and the step surface 16A.

In the core 40, two left and right press-fit grooves 43 that are open on the front and rear surfaces are formed in parallel to each other at a predetermined interval in the horizontal direction.
As shown in FIG. 3, the tab-like terminal 30 can be inserted into each press-fit groove 43 from the back (press-fit) in a posture in which the terminal connection end 34 faces forward. At a predetermined position on the base side of the horizontal portion 32 of the tab-like terminal 30, a stopper 35 is formed to project against the mouth of the rear surface side of the press-fitting groove 43 and stop pushing the tab-like terminal 30.
Here, a tapered lead-in opening may be formed at the rear edge of the press-fitting groove 43, and bite into the wall surface of the press-fitting groove 43 in the middle of the horizontal portion 32 of the tab-like terminal 30. For example, a wedge portion may be provided.

  Ribs 45 having a triangular cross section extending in the front-rear direction are formed over the entire depth in the four vertical and horizontal surfaces of the press-fit portion 42 of the core 40 at the center width position. The tip of each rib 45 is tapered for guiding.

The bottom surface of the first concave portion 15 in the substrate mounting portion 11 is a sliding contact surface 18 that makes the core 40 slide in contact as described above, and the front surface of the sliding contact surface 18 from the position in the cut portion 17 described above. A pair of left and right guide rails 25 extending in the front-rear direction having a triangular cross section are formed in parallel with each other at a predetermined interval.
On the other hand, on the bottom surface of the main body portion 41 of the core 40, a pair of guide grooves 47 having the same cross-sectional triangle that is fitted to the guide rail 25 described above is formed.

Next, an example of a connector manufacturing procedure will be described.
As shown in FIG. 3, the two tab-shaped terminals 30 bent into a predetermined L-shape are in a posture with the terminal connection end 34 facing forward, with respect to the press-fitting groove 43 formed in the core 40. It is press-fitted from behind. As shown in FIG. 4, the pressing is stopped when the stopper 35 hits the rear edge of the press-fitting groove 43, and as shown in FIGS. 4 to 7, the two tab-like terminals 30 with respect to the core 40. Is formed. In this assembly 49, the terminal connection ends 34 of both tab-shaped terminals 30 protrude frontward from the front surface of the press-fit portion 42 in the core 40, and the board connection of both tab-shaped terminals 30 from the rear surface of the main body portion 41. After the end 33 protrudes backward, the end 33 rises side by side.

  Such an assembly 49 is inserted from above into the first recess 15 of the board mounting portion 11 in the housing 10 and formed on the lower surface of the main body portion 41 of the core 40 as shown by an arrow a in FIG. The guide groove 47 is placed on the sliding contact surface 18 which is the bottom surface of the first recess 15 while fitting the guide groove 47 in the guide rail 25. After that, when the assembly 49 is moved forward along the guide rail 25 as indicated by the arrow b in FIG. 5, the terminal connection end 34 side of both tab-like terminals 30 penetrates the mounting hole 23 and the connector fitting portion 12, the press-fit portion 42 of the core 40 contacts the rear edge of the mounting hole 23 while entering the back side of the second recess 20. When the core 40 is further pushed in, the press-fit portion 42 is press-fitted into the mounting hole 23 while crushing the ribs 45 provided on the four surfaces, and the push-in is stopped when the main body 41 hits the partition wall 13 as shown in FIG. Then, the assembly is completed with the press-fit portion 42 fitted into the mounting hole 23 while the main body portion 41 of the core 40 fits perfectly into the cut portion 17.

  In the state where the assembly is completed in this way, as shown in FIGS. 10 and 11, the terminal connection ends 34 of both tab-shaped terminals 30 are left and right on the connector fitting portion 12 side from the back surface of the second recess 20. It will be in the state which protruded by the predetermined dimension to the near side along with. On the other hand, on the board mounting portion 11 side, the board connection ends 33 of both tab-like terminals 30 are arranged in the left and right sides at positions closer to the partition wall 13 in the first recess 15 than the mounting surface 19 of the printed board P. It will be in the state protruded upwards to the upper position.

After that, the printed board P is put on the board mounting portion 11 side and placed on the placement surface 19. Along with this, the board connection ends 33 of both tab-like terminals 30 pass through the through holes of the printed board P and protrude from the upper surface thereof, so that they are soldered and connected to the corresponding lands. If necessary, the upper surface side of the printed circuit board P is filled with a potting agent.
The connector manufactured as described above is attached to a fixing member such as a device, and is used in a form in which the mating connector is fitted to the connector fitting portion 12.

  As described above, in the connector according to the present embodiment, after the tab-like terminal 30 is press-fitted to the core 40, the core 40 (press-fit portion 42) is fitted into the mounting hole 23 of the partition wall 13 of the housing 10 by press-fitting. Can be manufactured without any insert molding. Here, for example, if the tab-like terminal 30 is directly inserted through the partition wall 13 by press-fitting or the like, the core can be made unnecessary. In this means, the tab-like terminal 30 is arranged in a predetermined alignment. It is difficult. On the other hand, in the present embodiment, as described above, the two tab-like terminals 30 are mounted in advance on the core 40 by press-fitting, and the core 40 is again press-fitted into the mounting hole 23 and mounted on the housing 10. Therefore, both tab-like terminals 30 can be mounted in a regular arrangement. Therefore, when the printed circuit board P is placed on the placement surface 19 of the board mounting portion 11, the board connection ends 33 of both tab-like terminals 30 can be smoothly inserted into the corresponding through holes. Shortening is achieved. As a result, the manufacturing cost can be reduced.

  When the assembly 49 (tab-shaped terminal 30 and core 40) is fitted into the mounting hole 23 of the partition wall 13, the assembly 49 is inserted into the first recess 15 and the guide groove 47 and the guide rail 25 are aligned. 25, the press-fit portion 42 of the core 40 is accurately guided to the mounting hole 23 if it is moved forward on the sliding contact surface 18, so that the press-fit portion 42 of the core 40 is immediately press-fitted into the mounting hole 23. be able to. That is, the operation of fitting the core 40 into the mounting hole 23 of the partition wall 13 can be performed accurately and quickly.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.
In this embodiment, the construction method for fitting the core 50 into the mounting hole 55 of the partition wall 13 of the housing 10 is changed.
In this embodiment, as shown in FIG. 12, the shape of the core 50 is such that a fitting portion 52 projects from the front surface of the main body 51 wider than the core 40 of the first embodiment. A protrusion 53 is formed around the fitting portion 52 on the front surface.

On the other hand, the partition wall 13 between the board mounting portion 11 and the connector fitting portion 12 in the housing 10 has a stepped shape in which the fitting portion 52 is fitted from the front portion of the main body portion 51 of the core 50 as shown in FIG. Mounting hole 55 is formed.
About another structure, it is the same as that of the said Embodiment 1, Comprising: About the site | part and member which have the same function as Embodiment 1, description is abbreviate | omitted or simplified by attaching | subjecting the same code | symbol.

The procedure for assembling the connector of the present embodiment is as follows.
An assembly 49A in which the two tab-like terminals 30 are mounted on the core 50 by press-fitting is inserted into the first recess 15 of the substrate mounting portion 11 from above as shown by an arrow c in FIG. When the assembly 49A is slid forward on the slidable contact surface 18 as indicated by the arrow d after that, the terminal connection ends 34 of both tab-like terminals 30 are provided with the mounting holes 55. The fitting portion 52 fits into the mounting hole 55 from the front side portion of the main body portion 51 of the core 50 while penetrating and entering the back side of the second recess 20 of the connector fitting portion 12, and the protrusion 53 is formed on the step surface 55A. The pushing is stopped in the form of being pressed against.

Then, the core 50 is heated in a state of being pressed toward the partition wall 13 so that the portion of the protrusion 53 is mainly welded, so that the core 50 is fitted from the main body 51 as shown in FIG. Assembling is completed in a state where the joint portion 52 is completely fitted from the cut portion 17 to the mounting hole 55.
In the connector of the second embodiment, the same effect as that of the first embodiment can be obtained.
Also in the second embodiment, guide means for guiding the assembly 49A toward the mounting hole 55 of the partition wall 13 may be provided.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Means for fitting the core into the mounting hole of the partition wall of the housing may be by press-fitting or welding exemplified in the above embodiment, or by adhesion.
(2) In the above embodiment, the tab-shaped terminal is bent in an L shape in advance and then attached to the core. However, the tab-shaped terminal is attached to the core in a straight posture, and then bent by L after bending. You may form in a letter shape.
(3) An assembly formed by mounting tab-shaped terminals on the core may be formed by insert molding.

(4) As a form of the connector housing, the first concave portion to which the printed circuit board is mounted and the second concave portion to which the mating connector is fitted may be provided back to back, in which case a tab shape A straight terminal can be used .
(5) In the above embodiment, the case where the assembly is first inserted into the first recess and then the core is fitted into the mounting hole of the partition wall is illustrated, but the direction and shape of the opening of the first recess and the second recess Depending on the above conditions, the assembly may be initially inserted into any of the recesses.
(6) As the guide means for guiding the core, the formation positions of the guide rail and the guide groove may be opposite to those in the above embodiment. Further, the cross-sectional shapes of the guide rail and the guide groove may be other shapes such as a semicircle .

P ... Printed circuit board 10 ... Connector housing 11 ... Board mounting part 12 ... Connector fitting part 13 ... Partition 15 ... First recess 18 ... Sliding contact surface 20 ... Second recess 23 ... Mounting hole 25 ... Guide rail (guide)
DESCRIPTION OF SYMBOLS 30 ... Tab-shaped terminal 33 ... Board | substrate connection end 34 ... Terminal connection end 40 ... Core 42 ... Press-fit part 43 ... Press-fit groove 47 ... Guide groove (guide)
49, 49A ... assembly 50 ... core 53 ... ridge 55 ... mounting hole

Claims (3)

A connector housing formed in a form in which a first recess into which a printed circuit board is mounted and a second recess into which a mating connector is fitted are opened on different surfaces via a partition;
A plurality of tab-shaped terminals;
A core on which the tab-like terminals are mounted in a predetermined arrangement;
A mounting hole provided in the partition wall to which the core is fitted, and
The mounting hole of the tab-like after terminal said core fitted with being inserted into one of the recesses of said two recesses, the tab-shaped terminal end the core while enters the other recess of the partition wall It has a configuration which is fitted to,
The concave portion on the side where the core on which the tab-like terminal is mounted is initially inserted is provided with a sliding contact surface on which the core can slide in a position orthogonal to the partition, A connector, characterized in that guides are provided on opposite surfaces of the core to engage with each other and slide the core toward the mounting hole .   2. The connector according to claim 1, wherein the tab-shaped terminal is bent in an L shape, and the first recess and the second recess in the connector housing are formed on surfaces orthogonal to each other.   The connector according to claim 1 or 2, wherein the tab-like terminal is attached to the core by press-fitting.

Images