JP2004199974A - Press fit connector and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a press fit connector, and a manufacturing method thereof, which is of low cost and small, and capable of improving reliability. <P>SOLUTION: A terminal 20 of a press fit connector 1 is so bent that the protrusion direction on the base end side of the terminal 20 extending from a housing 10 orthogonally crosses with an axial center direction CL1 of a contact part 22 which is provided on the tip side of the terminal 20 and can be press-fitted in a through hole 32 of a printed board 30 under pressurization with a pressurizing tool 40. A pressurizing plane 23 is so formed as to contain the intersection at an extension part where the base end side of the terminal 20 is extended in the protrusion direction. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to, for example, a press-fit connector mounted on a vehicle and a method of manufacturing the same.
[0002]
[Prior art]
FIGS. 3A and 3B are schematic configuration diagrams of an example of a conventional press-fit connector, in which FIG. 3A is a perspective view and FIG. 3B is a partially enlarged view thereof. FIG. 4 is a side cross-sectional view showing a situation in which the terminal of the press-fit connector of FIG. 3 in which a flange is simply removed is pressed into a printed circuit board.
[0003]
2. Description of the Related Art Conventionally, a so-called press-fit connector (PFC) has been widely used as a board connector, in which simple connection that does not require soldering can be performed simply by press-fitting its terminal into a printed board.
[0004]
Further, as shown in FIG. 3, for example, three terminals 520 each extending in an L-shape from the housing 510 of the press-fit connector 500 are provided in a predetermined direction in the Q direction (the width direction of the terminals). It is known that they are arranged side by side at a pitch, and have a terminal body 521 having a flange portion 522 and a contact portion 523, respectively.
[0005]
Each terminal 520 of the press-fit connector 500 is manufactured in an L-shape by bending a flat terminal body 521 punched from a material by a press or the like, so that the productivity is excellent and the manufacturing cost is low. Therefore, it is widely available on the market (for example, see Patent Document 1).
[0006]
[Patent Document 1]
JP 2001-23715 A
[Problems to be solved by the invention]
However, the increase in the number of electronic components and the like due to the recent improvement in vehicle performance and the increase in the number of connecting cables and the like have further reduced the setting space for the connector, and there has been a demand for downsizing the connector.
[0008]
In order to cope with such a demand, for example, in FIG. 3B, the flange 522 is eliminated from the terminal body 521 of the terminal 520 of the press-fit connector 500, and the upper part of the terminal body 521 is directly pressed to reduce the terminal interval. It can be narrowed.
[0009]
However, as shown in FIG. 4, in the press-fit connector 500a in which the flange portion is simply removed, the back surface of the bent portion of the terminal main body 520a is pressed in the F direction in FIG. In the case of the bending method described above, since a bent portion of the terminal 520a is located on the extension line CL2 at the center of the contact portion 523a, a slightly displaced portion is pressed. For this reason, since the direction of the reaction force from the contact portion 523a and the pushing portion are not in the same direction, a moment is generated, and depending on the length and thickness of the terminal 520a, the terminal 520a buckles or has a sufficient press-fit. There is a possibility that a problem such as an inability to obtain a depth may occur.
[0010]
SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the related art, and an object of the present invention is to provide a connector which is inexpensive, small in size, and capable of improving reliability.
[0011]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a terminal extending from a housing at a base end side, and a contact portion provided at a distal end side of the terminal and capable of being pressed into a through hole of a substrate by being pressed by a jig. In a press-fit connector in which the terminal is bent so that the center direction is orthogonal to the terminal, the base end of the terminal is extended in the protruding direction, and the extended portion includes the orthogonal point. And a pressing plane for pressing with the jig.
[0012]
According to this configuration, since the base end side of the terminal is extended in the protruding direction, and the extended portion is formed to include the orthogonal point, and the pressing plane for pressing with the jig is provided. In addition, the need for a terminal flange is eliminated, the yield of the product is improved, and the terminal interval can be reduced. Therefore, the cost of the product is reduced and the size of the press-fit connector is reduced.
[0013]
Further, in this product, since the pressing plane is secured on the axis of the contact portion, when the pressing plane is pressed by the jig, the pressing plane is almost pressed on the direction line of the contact reaction force. Therefore, the moment applied to the terminal at the time of press-fitting can be reduced, and the selection of the length and thickness of the terminal is expanded, which is advantageous in design.
[0014]
As a result, in addition to being inexpensive, a press-fit connector that is small and can improve reliability is obtained.
[0015]
As in the invention according to claim 2, the terminal has a first bent portion which bends a portion connected to the pressing plane so as to form an obtuse angle with respect to the projecting direction, and further a portion bent at the first bent portion. Having a second bent portion bent at an acute angle with respect to the bending direction, and if the bending direction at the second bent portion is to be the axial direction of the contact portion, The bent portion of the terminal has a seven-letter shape in side view, and the terminal has a shape close to a conventional L-shape, so that a pressing plane is secured on the axis of the contact part.
[0016]
According to the third aspect of the present invention, if the first bent portion is separated from the axial direction of the contact portion by a distance capable of forming the pressing plane, the first bent portion is located on the axial center of the contact portion. The buckling strength of the terminal is secured in a range where the pressing plane is secured.
[0017]
According to a fourth aspect of the present invention, there is provided a contact terminal provided on the distal end side of a terminal extending from a housing and protruding from a base end side of the terminal and being pressed by a jig to be press-fitted into a through hole of a substrate. In a method for manufacturing a press-fit connector in which the terminal is bent and molded so that the center direction is orthogonal, the base end side of the terminal is extended in a protruding direction, and the extended portion includes the orthogonal point. In addition, a pressing plane for pressing with the jig is formed.
[0018]
According to this configuration, the base end side of the terminal is extended in the protruding direction, and a pressing plane for pressing with the jig is formed such that the extended portion includes the orthogonal point. A flange is not required, and in the manufacturing process, the yield of products is improved and the terminal interval can be reduced. Therefore, the cost of the product can be reduced and the size of the connector can be reduced.
[0019]
Further, in the product manufactured by this manufacturing method, a pressing plane is secured on the axis of the contact portion. Therefore, when the pressing plane is pressed by the jig, the pressing plane is almost pressed on the direction line of the contact reaction force. Therefore, the moment applied to the terminal at the time of press-fitting can be reduced, and the selection of the length and thickness of the terminal is expanded, which is advantageous in design.
[0020]
As a result, in addition to being inexpensive, a method of manufacturing a press-fit connector that is small and can improve reliability is obtained.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic configuration diagram of a press-fit connector according to an embodiment of the present invention, where (a) is a perspective view and (b) is a partially enlarged view thereof.
[0022]
In FIG. 1, a press-fit connector 1 is, for example, a connector mounted on a vehicle. The press-fit connector 1 has a substantially rectangular parallelepiped synthetic resin housing 10 and a plurality of metal pin-shaped terminals extending in parallel from the housing 10. 20.
[0023]
In the figure, each terminal 20 is bent downward in two stages after its terminal body 21 projects horizontally from the housing 10. Then, as many terminals as possible are arranged as long as the terminals 20 do not interfere with each other. Here, four terminals 20 are arranged side by side in the plate width direction (P direction in FIG. 1A), for example, one more than in the conventional example. It goes without saying that the shape and number of each terminal 20 differ depending on the type and size of the press-fit connector 1.
[0024]
The shape of the terminal 20 which is a feature of the present invention is as follows. That is, the terminal body 21 of each terminal 20 has a pressing flat surface 23 which can be pressed by a pressing jig (corresponding to a jig) described later on the axis CL1 of the contact portion 22 instead of the flange portion as in the conventional example. Have.
[0025]
In this terminal main body 21, a first bent portion 24 that bends a portion connected to the pressing flat surface 23 so as to form an obtuse angle θ1 with respect to the direction of projection from the housing 10, and a portion bent by the first bent portion 24 A second bending portion 25 bent at an acute angle θ2 with respect to the bending direction at the first bending portion 24, and the bending direction at the second bending portion 24 is the axial direction of the contact portion 22. CL1 is set. As a result, the terminal body 21 has a seven-letter shape in side view, so that the terminal 20 has a shape close to a conventional L-shape. In addition, as shown in the drawing, the contact portion 22 has a distal end of the terminal main body 21 bulged in the plate width direction to form a needle-shaped elastic portion of a needle.
[0026]
The first bent portion 24 is separated from the axis CL1 of the contact portion 22 by a distance that can form a pressing plane 23 that can be pressed by a pressing jig (not shown). For example, the first bent portion 24 is preferably separated from the axis CL1 of the contact portion 22 by a distance about the thickness of the terminal body 21.
[0027]
In this case, when the pressing flat surface 23 is pressed, an unbalanced load is not applied to the upright portion of the terminal main body 21, so that the possibility of the terminal 20 buckling is extremely reduced. As will be described later in detail, when the pressing plane 23 is pressed by a pressing jig (not shown), the contact portion 22 is press-fitted into a through hole of a printed board (corresponding to a board) (not shown) to be electrically connected ( Contact).
[0028]
Incidentally, the press-fit connector 1 of the present embodiment is not shown by a projecting direction on a base end side of a terminal 20 extending from the housing 10 and a distal end side of the terminal 20 and being pressed by a pressing jig (not shown). When the terminal 20 is bent and molded so that the axial direction CL1 of the contact portion 22 that can be press-fitted into the through hole of the printed circuit board is orthogonal, the base end side of the terminal 20 is extended in the protruding direction. It is manufactured by forming a pressing plane 23 for pressing with the pressing jig so as to include the orthogonal point in the extended portion.
[0029]
FIG. 2 is a side cross-sectional view showing a state when the terminals of the manufactured press-fit connector are pressed into a printed circuit board.
[0030]
As shown in FIG. 2, each terminal 20 is inserted into a plurality of through holes 11 provided on the left side wall of the housing 10 so that each terminal 20 is placed in a plate thickness direction (a direction perpendicular to the paper surface in the drawing). ) Are arranged at a predetermined pitch. In the press-fit connector 1, before the press-fitting by the pressing jig 40 is started, the housing 10 is set on the printed board 30, and the contact portions 22 of the terminals 20 are positioned in the through holes 32 of the printed board 30. Then, the tip is temporarily inserted.
[0031]
Next, when the press-fitting is started, the pressing jig 40 descends from above the terminal 20, and presses the pressing flat surface 23 of the terminal 20, but unlike the bending method in the conventional example, in the case of the present embodiment, Since there is no R-shaped portion of the terminal 20 on the axis CL1 of the contact portion 22, it can be pressed with a pressing force F directly above the terminal portion. Therefore, the direction of the reaction force from the contact portion 22 and the pressed portion are in the same direction.
[0032]
As described above, according to the present embodiment, the terminal 20 of the press-fit connector 1 has the pressing plane 23 on the extension line CL1 at the center of the contact portion 22, and the pressing plane 23 is pressed from directly above by the pressing jig 30. Since the contact portion 22 is press-fitted into the through hole 32 of the printed circuit board 30, a flange portion is not required for the terminal 20, thereby improving the product yield and reducing the terminal interval. . Therefore, the cost of the product can be reduced and the size of the connector can be reduced.
[0033]
Further, according to this, since the contact reaction force is generally pushed on the direction line, the moment can be reduced, and the selection of the length and the thickness of the terminal is widened, which is advantageous in design. Therefore, depending on the length and thickness of the terminal 20, there is no possibility that the terminal 20 will buckle or a problem that a sufficient press-fit depth cannot be obtained will occur.
[0034]
As a result, in addition to being inexpensive, a press-fit connector which is small and can improve reliability and a method of manufacturing the same are obtained.
[0035]
In the above-described embodiment, with the press-fit connector 1 fixed on the printed circuit board 30, the pressing jigs 40 are lowered from above to press the respective terminals 20, thereby pressing the respective terminals 12 to the printed circuit board 30. The press-fit connector 1 is fixed under the printed circuit board 30, and the pressing jig 40 is raised from below to press each terminal 20 to press each terminal 20. 12 may be pressed into the printed circuit board 30. In this case, the same operation and effect as those of the above embodiment can be obtained.
[0036]
Further, in the above-described embodiment, the bent portions are two places of the first bent portion 24 and the second bent portion 25. However, more bent portions may be provided. However, considering the processing cost, it is preferable to use the above two locations.
[0037]
Further, in the above-described embodiment, the case where the plurality of terminals 20 are arranged in the housing 11 at a predetermined pitch in the plate width direction and arranged in a single row has been described, but the number of rows may be further increased. In that case, if the pressing planes 23 overlap, the lower pressing plane cannot be pressed by the pressing jig 40, so that it is preferable to arrange the pressing planes such that the pressing planes are shifted in plan view. The number of the terminals 20 is not limited to a plurality, but may be one or more. However, if the number of the terminals 20 is large, the effect of the present invention can be particularly expected in terms of miniaturization of the connector.
[0038]
Also, the press-fit connector 1 of the present embodiment has been described as being mounted on a vehicle, but the scope of the present invention is not limited to this. For example, the press-fit connector 1 can be applied to general household connectors and the like, and is particularly mass-produced. Suitable for products.
[0039]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, while being able to achieve cost reduction of a product, miniaturization of a press-fit connector can be implement | achieved. Further, the moment applied to the terminal at the time of press-fitting can be reduced, and the selection of the length and thickness of the terminal is expanded, which is advantageous in design.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a press-fit connector according to an embodiment of the present invention, where (a) is a perspective view and (b) is a partially enlarged view thereof.
FIG. 2 is a side cross-sectional view showing a situation when terminals of the present press-fit connector are pressed into a printed circuit board.
3A and 3B are schematic configuration diagrams of an example of a conventional press-fit connector, in which FIG. 3A is a perspective view and FIG. 3B is a partially enlarged view thereof.
FIG. 4 is a side cross-sectional view showing a situation in which a terminal of a conventional press-fit connector without a flange is simply pressed into a printed circuit board.
[Explanation of symbols]
Reference Signs List 1 press-fit connector 10 housing 20 terminal 21 terminal body 22 contact part 23 pressing plane 24 first bent part 25 second bent part 30 Printed circuit board (corresponding to a board)
32 through hole 40 pressing jig (corresponding to jig)
CL1 axis (or axis direction)

Claims (4)

The protruding direction on the base end side of the terminal extending from the housing and the axial direction of the contact portion provided on the distal end side of the terminal and press-fittable into the through hole of the substrate by being pressed by the jig are orthogonal to each other. In the press-fit connector in which the terminal is bent,
A press-fit connector comprising a pressing flat surface formed by extending a base end side of the terminal in a protruding direction and including the orthogonal point in the extended portion, for pressing with the jig. . The terminal has a first bent portion that bends a portion connected to the pressing plane so as to form an obtuse angle with respect to the protruding direction, and a portion bent at the first bent portion has an acute angle with respect to the bending direction. 2. The press-fit connector according to claim 1, further comprising a second bent portion bent in such a manner that the bending direction at the second bent portion is in the axial direction of the contact portion. 3. The press-fit connector according to claim 2, wherein the first bent portion is separated from the axial direction of the contact portion by a distance capable of forming the pressing plane. 4. The protruding direction on the base end side of the terminal extending from the housing and the axial direction of the contact portion provided on the distal end side of the terminal and press-fittable into the through hole of the substrate by being pressed by the jig are orthogonal to each other. In a method of manufacturing a press-fit connector in which the terminal is bent and formed,
A method for manufacturing a press-fit connector, comprising: extending a base end side of the terminal in a projecting direction, and forming a pressing plane for pressing with the jig so as to include the orthogonal point in the extended portion. .

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