JP3969316B2 - Circuit board connector and terminal press-fitting jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a circuit board connector having a plurality of terminals press-fitted into a mounting hole of a circuit board, and a terminal press-fitting jig.
[0002]
[Prior art]
Conventionally, it is known that a terminal used for a connector does not perform soldering by making an electrical connection with a contact portion formed on an inner peripheral wall thereof by being press-fitted into a through hole of a circuit board. (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
German Patent Application Publication No. 19608168 [0004]
An example of the terminal described above is shown in FIG. The terminal 1 is also referred to as a needle eye shape, and a pair of left and right elastic contact portions 2 are formed to bulge outward in a substantially arc shape with a bending space in between, so that the radial direction The structure is made elastically deformable. The terminal 1 is press-fitted into the through hole 6 of the circuit board 5 while being elastically deformed so that the elastic contact portions 2 on both sides are closed, and is pressed against the inner periphery of the through hole 6 by the elastic force in the opening direction. In addition to being prevented from coming off, it can be electrically connected to the contact 7 formed on the inner periphery of the through hole 6.
[0005]
By the way, in this type of press-fit terminal 1, it is necessary to insert it into the through hole 6 against the elastic force of the elastic contact portion 2 as described above, and a corresponding stable pushing force is required. For this reason, conventionally, the receiving portion 3 is provided so as to protrude on both sides of the terminal 1 immediately above the elastic contact portion 2, and the terminal press-fitting jig 4 is applied to the receiving portion 3 and pushed into the elastic contact portion 2. Is inserted into the through hole 6.
[0006]
[Problems to be solved by the invention]
As described above, in the circuit board connector configured to push the terminal with the terminal press-fitting jig, the receiving portion is provided to extend as much as possible on both the left and right sides so that the terminal can be easily and surely pushed into the circuit board. It is preferable. However, when a plurality of terminals are arranged side by side, if the receiving portions are provided so as to protrude greatly, the receiving portions of adjacent terminals may interfere with each other to narrow the arrangement pitch of the terminals. There is a problem that the connector becomes large in size. In addition, if the protruding width of the receiving part is reduced in order to narrow the terminal arrangement pitch, the terminal press-fitting jig will be easily detached from the receiving part during the pushing operation of the terminal, and the terminal is surely pushed into the through hole. Becomes difficult.
[0007]
In order to prevent interference between the receiving parts and to narrow the arrangement pitch of the terminals, a method of changing the vertical positions of the receiving parts of adjacent terminals, that is, arranging the receiving parts in a staggered manner is conceivable. However, in the terminal with the receiving portion disposed above, the distance between the press-fitting portion to the circuit board and the receiving portion is extended, and a narrow portion is long and continuous between the press-fitting portion and the receiving portion. Therefore, when the terminal is pushed into the circuit board by the terminal press-fitting jig, a new strength problem occurs.
[0008]
The present invention has been completed based on the above-described circumstances, and can provide a circuit board connector and terminals having terminal strength capable of narrowing the arrangement pitch of the terminals and withstanding the load at the time of press-fitting. An object is to provide a press-fitting jig.
[0009]
[Means for Solving the Problems]
As a means for achieving the above object, the invention according to claim 1 is provided in parallel with the connector housing, and a press-fit portion that is press-fitted into the mounting hole of the circuit board is formed at the tip, and the press-fit direction of the press-fit portion. For a circuit board that includes a plurality of terminals that are formed so that a receiving part protrudes laterally rearward, and presses the receiving part in a tip direction by a terminal press-fitting jig to press-fit the terminal into a mounting hole of the circuit board. In the connector, for the adjacent ones of the terminals, the positions of the receiving portions are different from each other in the press-fitting direction of the terminals, and the side portions of the receiving portions of the terminals that are formed rearward in the press-fitting direction The circuit board connector is characterized in that the shaft portion between the receiving portion and the press-fitting portion is connected by an inclined surface.
[0010]
The invention according to claim 2 is formed in parallel with the connector housing, and is formed with a press-fit portion that is press-fitted into the mounting hole of the circuit board at the tip, and a receiving portion that protrudes laterally behind the press-fit direction. A circuit board connector for press-fitting the terminal into a mounting hole of the circuit board by pressing the receiving portion in a distal direction by a terminal press-fitting jig, and the terminal being adjacent to the terminal. The positions of the receiving portions are different from each other in the press-fitting direction of the terminals, and the sides of the receiving portion that are behind the press-fitting direction are connected to the press-fitting portions by slopes. A circuit board connector was obtained.
[0011]
According to a third aspect of the present invention, a plurality of press-fit portions fixed to the connector housing, press-fitted into the mounting holes of the circuit board at the tip, and receiving portions projecting laterally behind the press-fit direction. In the terminal press-fitting jig for a circuit board connector in which a plurality of pressing surfaces for press-fitting the terminals into the mounting holes of the circuit board by pressing the receiving portion in the distal direction are arranged in parallel. Among the adjacent ones, the terminal press-fitting jig for the circuit board connector is characterized in that the positions in the press-fitting direction are different from each other.
[0012]
[Action and effect of the invention]
<Invention of Claim 1>
Among the terminals adjacent to each other, the positions of the receiving portions are made different from each other in the press-fitting direction of the terminals, whereby interference between the receiving portions can be prevented and the arrangement pitch of the terminals can be narrowed. Moreover, the receiving part arrange | positioned in the press-fitting direction back by connecting the side part of the receiving part arrange | positioned on the back in the press-fitting direction and the axial part in the press-fitting direction front of the receiving part on the slope, and this is adjacent. The width between the press-fitting part of the terminal and the receiving part of the terminal arranged at the rear in the press-fitting direction is narrow, while maintaining a predetermined distance between the receiving part and the receiving part forward of the press-fitting direction. The terminal strength can be improved by shortening the length of the portion.
[0013]
<Invention of Claim 2>
Among the terminals adjacent to each other, the positions of the receiving portions are made different from each other in the press-fitting direction of the terminals, whereby interference between the receiving portions can be prevented and the arrangement pitch of the terminals can be narrowed. In addition, by connecting the side of the receiving part arranged on the rear side in the press-fitting direction and the press-fitting part with an inclined surface, the receiving part arranged on the rear side in the press-fitting direction and a terminal adjacent thereto are formed. Terminal strength by shortening the length of the portion between the press-fit portion and the receiving portion of the terminal where the receiving portion is arranged rearward in the press-fitting direction while maintaining a predetermined distance from the receiving portion in the front direction Can be improved. Moreover, the width | variety of the site | part between the press-fit part of a terminal with which the receiving part is arrange | positioned in the press-fit direction and the receiving part can be widened, and terminal strength can be improved.
[0014]
<Invention of Claim 3>
The adjacent ones of the pressing surfaces that press the receiving portion formed on the terminal are made different in the press-fitting direction so that the receiving portion is made different in the press-fitting direction of the terminal. It is possible to provide a terminal press-fitting jig that can be used for press-fitting of a circuit board connector in which interference between parts is prevented and the arrangement pitch of the terminals is narrowed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS. The circuit board connector 10 includes a synthetic resin housing 11 (corresponding to the connector housing of the present invention) and a plurality of terminals 20 and 21. As will be described later, the terminals 20 and 21 are terminals adjacent to each other and have different shapes. Hereinafter, the board connector 10 will be described with the right side of FIG. The housing 11 includes a standing wall portion 12 and a hood portion 13 extending to the right of the standing wall portion 12. The hood 13 is fitted with a housing of a mating connector (not shown).
[0016]
Each of the terminals 20 and 21 is formed of a rod having a square cross section, and has an L shape. The terminals 20 and 21 have mounting holes formed in the standing wall portion 12 of the housing 11 in the horizontal portion 22 (hereinafter, a plurality of constituent elements of the terminals 20 and 21 are in principle given only one reference numeral in the drawing). The horizontal portion 22 is arranged in four stages in the housing 11. A tab 23 is formed at the front end of the horizontal portion 22, and each tab 23 is fitted with a terminal of a mating connector (not shown). At the lower end of the vertical portion 24 of the terminals 20 and 21, a press-fit portion 25 that is press-fit into a mounting hole 41 of the circuit board 40 described later is formed.
[0017]
As shown in FIGS. 2 and 4, the housing 11 has boss portions 15 formed at two locations, and each boss portion 15 has a screw hole 15 a for attachment. The housing 11 press-fits the press-fitting portions 25 of the terminals 20 and 21 into the circuit board 40, and then screws a screw (not shown) penetrating the circuit board 40 into the screw hole 15 a from below so that the housing 11 fits into the circuit board 40. Fix it.
[0018]
FIG. 5 shows the terminals 20 and 21 together with the circuit board 40 and the terminal press-fitting jig 50. FIG. 5 shows a state before the terminals 20 and 21 are press-fitted into the circuit board 40. As shown in the drawing, the press-in portions 25 are formed in the terminals 20 and 21 as described above. A guide portion 26 for guiding the press-fit portion 25 to the mounting hole 41 of the circuit board 40 is formed at the tip of the press-fit portion 25. Further, a pair of elastic contact portions 27 are formed on the left and right sides above the guide portion 26, and a thin portion 28 is formed between the elastic contact portions 27. Each of the elastic contact portions 27 bulge in the lateral direction, and can be bent in the radial direction by the action of the thin portion 28 formed therebetween.
[0019]
The circuit board 40 has a conductive path 42 formed on the surface thereof, and a contact 43 formed of a conductive material on the inner peripheral surface of the mounting hole 41 so as to be electrically connected to the conductive path 42. The outer diameter of the elastic contact portion 27 of the press-fit portion 25 in a free state is set to be a predetermined amount larger than the inner diameter of the contact 43 of the circuit board 40 and is expanded after being compressed and pressed into the mounting hole 41. By doing so, it is possible to establish electrical connection with the contact 43 and to be held in the mounting hole 41 by the restoring force of the elastic contact portion 27.
[0020]
The terminals 20 and 21 shown in FIG. 5 are adjacent to each other among the above-described horizontal portions 22 fixed to the housing 11 at the same height, and the shapes thereof are different from each other. Is. The terminal 21 is formed of a rod having a square cross section above the press-fitting portion 25 (corresponding to the rear of the press-fitting direction of the present invention), and a shaft portion 29 having a predetermined length, and further above the shaft portion 29. The receiving part 30 formed in is provided. The receiving portion 30 protrudes laterally with respect to the base portion 31 formed above, and a horizontal receiving surface 30a for contacting the terminal press-fitting jig 50 is formed on the upper portion. The side 30b of the receiving part 30 is connected to the receiving surface 30a and extends vertically, and the side 30b and the shaft part 29 are connected by a slope 30c.
[0021]
In the terminal 20 adjacent to the left side of the terminal 21 described above in FIG. 5, the receiving portion 30 is formed below the terminal 21. The receiving portion 30 of this one also protrudes laterally with respect to the base portion 31, and a horizontal receiving surface 30a for contacting the terminal press-fitting jig 50 is also formed on the upper portion. The side 30b of the receiving portion 30 is connected to the receiving surface 30a and extends vertically, and the side 30b and the press-fit portion 25 are directly connected by the inclined surface 30c.
[0022]
As described above, in the present invention, the adjacent terminals 20 and 21 are adjacent to each other even if the pitch between the terminals 20 and 21 is narrowed because the heights at which the receiving portions 30 are formed are different from each other. Interference between the receiving portions 30 can be prevented. Further, by connecting the side 30b of the upper receiving portion 30 and the shaft portion 29 with the inclined surface 30c, the distance between the inclined surface 30c and the adjacent receiving portion 30 (indicated by D in FIG. 6). It can be secured greatly. That is, when the distance D is to be secured by the same amount, the length of the shaft portion 29 can be shortened compared to the case where the side 30b and the shaft portion 29 are connected in a horizontal plane, and the terminal 21 is press-fitted into the circuit board 40. Sometimes it is advantageous in strength.
[0023]
The terminal press-fitting jig 50 has a comb shape having a plurality of guide holes 51 for receiving the base portions 31 of the terminals 20 and 21, and a first portion that presses the receiving portion 30 formed on the terminal 20 at the lower end thereof. A pressing surface 52 is formed. A receiving portion receiving portion 53 is formed below every other guide hole 51, and a second pressing surface 54 for pressing the receiving portion 30 formed on the terminal 21 is formed at the upper end thereof.
[0024]
Next, a method for press-fitting the terminals 20 and 21 into the circuit board 40 using the terminal press-fitting jig 50 according to the present invention will be described with reference to FIGS. In the figure, the vertically downward direction is the press-fitting direction of the terminals 20 and 21. The circuit board 40 is set in a press machine (not shown), and the circuit board connector 10 is installed in the press machine so that the terminals 20 and 21 are positioned above the mounting holes 41 of the circuit board 40. A terminal press-fitting jig 50 is attached to the press machine in advance so as to be movable up and down (shown by a two-dot chain line in FIG. 5).
[0025]
The press machine is operated, and the terminal press-fitting jig 50 is lowered from above the circuit board connector 10 so that the base portions 31 of the terminals 20 and 21 are inserted into the respective guide holes 51 of the terminal press-fitting jig 50. Eventually, when the terminal press-fitting jig 50 is lowered, the first pressing surface 52 comes into contact with the receiving surface 30a of the receiving portion 30 formed on the terminal 20, and at the same time, the receiving portion where the second pressing surface 54 is formed on the terminal 21. 30 abuts on the receiving surface 30a.
[0026]
Further, when the terminal press-fitting jig 50 is lowered by the press machine, the receiving surfaces 30a are pressed by the pressing surfaces 52 and 54 to lower the terminals 20 and 21, respectively, and the elastic contact portions 27 of the press-fitting portions 25 are radially connected to each other. And is press-fitted into the mounting hole 41 in which the contact 43 is formed. After the press-fitting, the terminal press-fitting jig 50 is lifted and removed from the terminals 20 and 21 by a press machine, and the press-fitting is completed as shown in FIG. At this time, the elastic contact portion 27 expands and contacts the contact 43 to complete electrical conduction.
[0027]
Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, only differences from the first embodiment will be described. Of the terminals 60 and 61 in the present embodiment, the terminal 60 is the same as the terminal 20 of the first embodiment.
[0028]
On the other hand, the terminal 61 is formed with a receiving portion 72 protruding laterally with respect to the base 71 at a position higher than the receiving portion 70 of the terminal 60, and the terminal press-fitting jig 50 abuts on the upper portion. For this purpose, a horizontal receiving surface 72a is formed. The side 72b of the receiving portion 72 is connected to the receiving surface 72a and extends vertically, and the side 72b and the press-fit portion 65 are directly connected by the inclined surface 72c.
[0029]
By adopting this configuration, it is possible to prevent interference between adjacent receiving portions 70 and 72 even if the arrangement pitch of the terminals 60 and 61 is narrowed. Further, by connecting the side 72b of the receiving portion 72 of the terminal 61 and the press-fit portion 65 with the inclined surface 72c, the interval between the inclined surface 72c and the adjacent receiving portion 70 (indicated by E in FIG. 8). It can be secured greatly. Further, since the side 72b of the receiving portion 72 of the terminal 61 and the press-fit portion 65 are directly connected by the inclined surface 72c, the space between the receiving portion 72 and the press-fit portion 65 can be increased, and the terminal press-fit treatment can be performed. When press-fitting the circuit board 40 with the tool 50, it becomes more advantageous in strength than that of the first embodiment. In the second embodiment, the terminal press-fitting jig is the same as that in the first embodiment, and the description thereof is omitted.
[0030]
<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, and further, other than the following, depart from the gist. Various modifications can be made without departing from the scope.
(1) The position where the receiving portion for contacting the terminal press-fitting jig does not necessarily have to be two places above and below the terminal, and may be distributed to three or more places above and below.
(2) The mounting hole of the circuit board into which the terminal is press-fitted may be either a through hole or a via hole.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a circuit board connector according to the present invention.
2 is a rear view of FIG. 1. FIG.
FIG. 3 is a front view of FIG. 1;
4 is a top view of FIG. 1. FIG.
FIG. 5 is a diagram illustrating a state before the terminals of the first embodiment are press-fitted.
6 is a diagram illustrating a state where the terminal illustrated in FIG. 5 is press-fitted into a circuit board.
FIG. 7 is a diagram illustrating a state before the terminals of the second embodiment are press-fitted.
8 is a diagram illustrating a state where the terminal illustrated in FIG. 7 is press-fitted into a circuit board.
FIG. 9 is a diagram illustrating a terminal of a conventional circuit board connector that is press-fitted into the circuit board.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Circuit board connector 11 ... Housing 20, 21, 60, 61 ... Terminal 25, 65 ... Press-fit part 29 ... Shaft part 30, 70, 72 ... Receiving part 30b, 70b, 72b ... Side 30c, 70c, 72c ... Slope 40 ... Circuit board 41 ... Mounting hole 50 ... Terminal press-fit jig 52 ... First pressing surface 54 ... Second pressing surface

Claims (3)

A press-fit portion that is juxtaposed with the connector housing and that is press-fitted into the mounting hole of the circuit board is formed at the tip, and a plurality of terminals that are formed by protruding the receiving portion laterally behind the press-fit direction of the press-fit portion are provided. In the circuit board connector for press-fitting the terminal into the mounting hole of the circuit board by pressing the receiving portion in the distal direction with a terminal press-fitting jig,
Among the terminals adjacent to each other, the positions of the receiving portions are different from each other in the press-fitting direction of the terminals, and the side portions of the receiving portions of the terminals that are formed rearward in the press-fitting direction; A circuit board connector, wherein a shaft portion between the receiving portion and the press-fitting portion is connected by an inclined surface. A press-fit portion that is juxtaposed with the connector housing and that is press-fitted into the mounting hole of the circuit board is formed at the tip, and a plurality of terminals that are formed by protruding the receiving portion laterally behind the press-fit direction of the press-fit portion are provided. In the circuit board connector for press-fitting the terminal into the mounting hole of the circuit board by pressing the receiving portion in the distal direction with a terminal press-fitting jig,
Regarding the adjacent ones of the terminals, the positions of the receiving portions are different from each other in the press-fitting direction of the terminals, and the side portions of the receiving portions that are behind the press-fitting direction and the press-fitting portions are inclined. Circuit board connector characterized by being connected. A plurality of terminals, which are fixed to the connector housing and press-fitted into the mounting hole of the circuit board at the tip, are formed by extending the receiving part laterally behind the press-fitting direction. In the terminal press-fitting jig of the circuit board connector in which a plurality of pressing surfaces for press-fitting into the mounting holes of the circuit board are pressed in the tip direction,
A terminal press-fitting jig for a circuit board connector, wherein adjacent ones of the pressing surfaces have different positions in the press-fitting direction.

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