JP3718318B2 - connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a surface mount connector, and more particularly, to a connector that realizes positioning and alignment of a connection terminal with respect to a mounting board to improve mounting workability and productivity on the mounting board.
[0002]
[Prior art]
FIG. 5 is a diagram for explaining a configuration example of a conventional connector including a use state, FIG. 6 is a diagram for explaining a connection terminal of the conventional connector, and FIG. 7 is a diagram for explaining an insulator of the conventional connector. 8 is a diagram illustrating a method for fixing the connection terminal to the insulator, and FIG. 9 is a diagram illustrating the problem.
[0003]
In the figure, a case where the connector is a jack connector in a row of terminal rows and the counterpart corresponding to the jack connector is a circuit board will be described as an example.
In FIG. 5, the conventional connector 1 is surface-mounted on a mounting board 21, and the circuit board 22 is inserted into the connector 1 as indicated by an arrow A, whereby the mounting board 21 and the corresponding circuit of the circuit board 22 are inserted. Can be connected.
[0004]
That is, in FIG. 5, the connector 1 includes a plurality of connection terminals 11 provided with connection terminals 11a corresponding to the electrodes 21a formed by patterning on the mounting substrate 21, and the connection terminals 11 at the insulator fixing portions 11b. It consists of insulators 12 that are lined up in a row by fixing by press fitting.
[0005]
Here, for easy understanding, the connection terminal 11 will be described with reference to FIG. 6 and the insulator 12 will be described with reference to FIG.
That is, in FIG. 6 showing the connection terminal in a perspective state, the flat connection terminal 11 in this case, in which the metal plate is formed by a normal press punching technique, is connected to the connection described in FIG. In the terminal 11a, a contact piece 11d protruding at a predetermined length “a” in the opposite direction to the connection terminal is connected to the end of the lead 11c extending in a direction substantially orthogonal to the other end of the connection terminal. The insulator fixing portion 11b described with reference to FIG. 5 is formed with a convex contact 11d 'on the terminal side, and protrudes to the contact piece side with a predetermined length "b" on the side of the lead 11c on the contact side. Is formed.
[0006]
Note that a bulge 11b ′ slightly protruding from the side is formed on one side in the width direction of the insulator fixing portion 11b shorter than the contact piece 11d.
On the other hand, FIGS. 7A and 7B illustrate an insulator in which a plurality of connection terminals are arranged and planted, wherein (7-1) is a side view, (7-2) is a plan view taken along arrows a to a ′, and (7-3). ) Is a cross-sectional view taken along arrows b to b ', and (7-4) is a cross-sectional view taken along arrows c to c'.
[0007]
In FIG. 7, the insulator 12 for implanting the connection terminals 11 at a constant pitch “p” is large enough to cover the area excluding the connection terminals 11 a of the connection terminals 11, and is a block-shaped terminal plantation that is long in the terminal row direction. a portion 12 _-1, and the mounting attachment piece 12 which protrudes to extend in the substrate mounting surface 12a side of the longitudinal end faces of the terminal implant portions includes a mounting hole 12f for the substrate 21 _-2, integrated It is formed.
[0008]
And the terminal implant portions 12 _-1, the terminal column to the pitch "p" slits 12b via a partition wall 12c with anchoring holes 12e to be described later to a thickness slightly greater than the width of the connecting terminal 11 A board insertion hole 12d that is formed in alignment and can be inserted to a required position in parallel with the board mounting surface 12a with the circuit board 22 described in FIG. Is formed across.
[0009]
In this inner slit hole 12b, as shown in (7-4) when the slit hole region is seen in cross section, the insulator fixing portion 11b when the connection terminal 11 is press-fitted from the contact side and positioned at a predetermined position, The above-mentioned fixing in such a size that the insulator fixing portion 11b and thus the connecting terminal 11 can be positioned and fixed by biting into the wall surface of the bulge 11b 'by press-fitting to the contact position of the insulator fixing portion 11b at the corresponding position. A hole 12e is formed.
[0010]
The above-described board insertion hole 12d opens the contact side of the connection terminal 11 so that the contact region of the connection terminal 11 positioned by the fixing hole 12e is exposed inside the board insertion hole 12d. It is formed as.
[0011]
Accordingly, between the adjacent slit holes 12b, only the substrate insertion hole 12d is formed as shown in (7-3) in a sectional view of the partition wall 12c.
Therefore, as shown in (8-1) of FIG. 8, the connection terminal 11 having the contact 11d 'as the head is inserted into the slit hole 12b of the insulator 12 as shown by the arrow B, and the insulator fixing portion of the connection terminal 11 is inserted. The connecting terminal 11 can be fixed to the insulator 12 as shown in (8-2) by press-fitting 11b into the fixing hole 12e of the slit hole 12b until the tip abuts.
[0012]
In this case, the insulator fixing portion 11b is provided with the bulge 11b 'only on one side in the width direction as described above, and the bulge non-forming side of the insulator fixing portion 11b is fixed to the fixing hole 12e at the time of press fitting. Therefore, the connection terminal 11 can be firmly fixed to the insulator 12 and positioned with respect to the insulator at the same time.
[0013]
On the other hand, the illustrated step 12g provided on the end surface on the substrate mounting surface side of the insulator 12 has a mounting surface 11a ′ of the connection terminal 11 with respect to the mounting substrate of the connection terminal 11a and the above-described substrate mounting surface 12a of the insulator 12. However, the positioning of the mounting substrate 21 and the insulator 12 can be facilitated by the contact of the edge of the mounting substrate with the step 12g.
[0014]
Therefore, after the insulator 12 to which the connection terminal 11 is fixed is positioned on the mounting substrate 21 by the step 12g, the insulator 12 is provided at the mounting hole 12f of the insulator 12 and the mounting hole corresponding position of the mounting substrate 21. The connection terminal 11a of the connection terminal 11 and the electrode 21a of the mounting substrate 21 can be brought into close contact with each other by fixing them with screws or the like passing through the mounting holes 21b.
[0015]
Therefore, the conventional connector 1 that is excellent in mounting workability with respect to the mounting board 21 and that can easily connect the mounting board 21 and the circuit board 22 can be configured as shown in FIG.
[0016]
[Problems to be solved by the invention]
In FIG. 9 for explaining the problem, (9-1) exemplifies a connection terminal shape in which inconvenience is likely to occur, and (9-2) and (9-3) are states when fixed to an insulator. FIG.
[0017]
That is, since the size of the bulge 11b ″ provided on the insulator fixing portion 11b is smaller than that of the fixing portion 11b, it is difficult to make the sizes of the two bulges 11b ′ always equal. In many cases, as a result, for example, as shown in FIG. 9A, the bulges 11b ″ have different sizes, and the bulge sizes may vary.
[0018]
For example, when the insulator fixing portion 11b having the bulge 11b ″ is press-fitted into the fixing hole 12e of the insulator 12 described with reference to FIG. 7, the amount of biting into the insulator side wall surface as the bulge 11b ″ becomes the tip of the insulator fixing portion. The connection terminal 11 may be fixedly tilted with respect to the insulator 12 due to the difference between the connection portion 11 and the root portion, and the connection state between the connection terminals 11a of the connection terminals 11 aligned in the column direction is, for example, a reference connection A variation “δ” as shown by (9-2) and (9-3) in the figure occurs with respect to the terminal 11.
[0019]
This means that a gap is generated between the electrode 21a of the mounting substrate 21 and the connection terminals 11a of the plurality of connection terminals 11, and it is difficult to ensure a reliable connection between the two.
[0020]
Therefore, in the connector 1 having such a connection terminal 11 ', it is necessary to correct the connection terminal region of the connection terminal 11' which has been displaced by inspecting the alignment state of the connection terminals 11a before mounting on the mounting board 21. As a result, there was a problem that man-hours were required and improvement in productivity could not be expected.
[0021]
[Means for Solving the Problems]
Above-mentioned problems, and connection terminals for surface mounting of one end of the connection surface of the plate thickness surface, a lead extending orthogonally from the connecting terminal, the contact piece extending in the direction opposite to the said connection terminal from the other end of the lead comprising the, an insulator fixing portion protruding into the connection terminals in the opposite direction to the root vicinity of the lead, the base side of the further the lead from the insulator attaching portion, the oblique side protrudes in the same direction as the insulator attaching portion a connection terminal made from a tapered projection, a plurality of fixing holes for press-fitting the insulator attaching portion of the connection terminals are formed in alignment, and formed at a position corresponding to the oblique sides of the tapered-shaped projections It made an insulator having an inclined surface, when the insulator attaching portion of the connection terminals press-fitted fixed to the fixing hole, the connecting inclined surface of swash sides and the insulator of the tapered-shaped protrusion abuts Position the connection surface of the terminal on the same surface It is solved by a connector for.
[0022]
If the conventional connector is provided with an inclination regulating means for the insulator of the connection terminal when the connection terminal is fixed, the inclination of the connection terminal with respect to the insulator described in FIG. 9 can be suppressed.
[0023]
Therefore, in the present invention, a connector is configured by providing a slope inclined with respect to the connecting terminal press-fitting direction in the vicinity of the fixing hole of the insulator, and providing an oblique side having the same inclination as the slope in a region corresponding to the slope of the connection terminal. ing.
[0024]
This indicates that when the connection terminal is press-fitted into the insulator, the connection terminal moves along the slope, so that the inclination of the connection terminal with respect to the insulator is corrected in a fixed state. .
[0025]
Therefore, even if there is variation in the size of the bulge in the insulator fixing portion of the connection terminal, the inclination of the connection terminal with respect to the insulator at the time of fixing the connection terminal can be suppressed, and the connection terminal described above before mounting can be suppressed. It is possible to obtain a connector that does not require modification man-hours and that can improve productivity by reducing the number of man-hours.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram for explaining a configuration example of a connector according to the present invention, FIG. 2 is a diagram for explaining connection terminals of the connector according to the present invention, FIG. 3 is a diagram for explaining an insulator according to the present invention, and FIG. These are the figures explaining the adhering method to the insulator of the connection terminal which becomes this invention.
[0027]
In the figure, since the case where the present invention is applied to the connector described in FIG. 5 is taken as an example, the same reference numerals are given to the same target members and parts as in FIGS. Omitted.
[0028]
The connector 3 according to the present invention in FIG. 1 is composed of a plurality of connection terminals 31 and insulators 32 in which the connection terminals 31 are arranged in a line by fixing by press-fitting similar to the connector 1. is there.
[0029]
Here, as in the case of the connector 1, the connecting terminal 31 will be described with reference to FIG. 2, and the insulator 32 will be described with reference to FIG.
That is, in FIG. 2 showing the connection terminal in a perspective state as in FIG. 6, the connection terminal 31 has the same shape as the connection terminal 11 described in FIG. 6, and only one side of the end portion of the lead 11c on the connection terminal 11a side. Is formed by projecting the tapered protrusion 31b formed on the oblique side 31a in the direction away from the insulator fixing portion 11b to the insulator fixing portion side, that is, the contact 11d 'side.
[0030]
On the other hand, in FIG. 3 showing the insulator 32 in the same manner as FIG. 7, (3-1) is a side view, (3-2) is a plan view taken along arrows a to a ′, and (3-3) is arrows b to b ′. (3-4) shows cross-sectional views taken along arrows c to c ′, respectively.
[0031]
In FIG. 3, the insulator 32 for implanting the connection terminals 31 at a constant pitch “p” similar to FIG. 5 has the same shape as the insulator 12 described in FIG. 7, and is formed in the slit hole 12b of the insulator 12. An inclined surface 32a having an angle corresponding to the oblique side 31a is additionally formed only at a position corresponding to the oblique side 31a in the connection terminal 31 in the vicinity of the fixing hole 12e.
[0032]
Therefore, between the adjacent slit holes, only the substrate insertion hole 12d appears as shown in FIG. 3 (3-3), which is the same as (7-3) in FIG.
Therefore, as shown in FIG. 4 (4-1), the connection terminal 31 having the contact 11d 'as the head is inserted into the slit hole 12b of the insulator 32 as shown by the arrow B, and the insulator fixing portion of the connection terminal 31 is inserted. When the terminal 11b is inserted into the fixing hole 12e of the slit hole 12b until the tip abuts, the connection terminal 31 can be fixed to the insulator 32 as shown in (4-2).
[0033]
In this case, the connecting terminal 31 is fixed to the insulator 32 by press-fitting the edge fixing portion 11b of the connecting terminal 31 into the fixing hole 12e, and at the same time, the inclined side 31a of the connecting terminal 31 and the inclination of the insulator 32 are fixed. Since the inclination of the connection terminal 31 with respect to the insulator 32 is corrected by sliding due to the contact with the surface 32a, the connection terminal 31 and the connection terminal 11a described with reference to FIG. The variation “δ” can be suppressed.
[0034]
Therefore, FIG. 1 and the main part are extracted from the connector 3 that is excellent in mounting workability with respect to the mounting board 21 indicated by the broken line C and can be easily connected between the mounting board 21 and the circuit board 22 indicated by the broken line D. Thus, it can be configured as shown in the enlarged in-circle diagram (a).
[0035]
In the connector 3 having such a configuration, when the connection terminal 31 is press-fitted, the connection terminal itself is slid between the inclined side 31a of the connection terminal 31 and the inclined surface 32a of the insulator 32 so that the connection terminal itself becomes the bulge of the insulator fixing portion 11b. Since the moving force toward the non-formed side is obtained, there is an advantage that effective positioning can be realized by the close contact between the non-formed bulge side and the fixing hole wall surface of the insulator 32.
[0036]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a connector that achieves reliable positioning of the connection terminal with respect to the mounting board and improves the mounting workability and productivity on the mounting board.
[0037]
In the description of the present invention, the case where the terminal row is a single row connector is taken as an example, but it is clear that the same effect can be obtained by applying the present invention to any terminal row connector as long as it is a surface mount type. It is.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration example of a connector according to the present invention.
FIG. 2 is a diagram illustrating a connection terminal of a connector according to the present invention.
FIG. 3 illustrates an insulator according to the present invention.
FIG. 4 is a view for explaining a method of fixing a connection terminal to an insulator according to the present invention.
FIG. 5 is a diagram illustrating a configuration example of a conventional connector including a use state.
FIG. 6 is a diagram for explaining connection terminals of a conventional connector.
FIG. 7 is a diagram illustrating an insulator of a conventional connector.
FIG. 8 is a diagram illustrating a method for fixing a connection terminal to an insulator.
FIG. 9 is a diagram for explaining a problem.
It is.
[Explanation of symbols]
3 Connector 11a Connection terminal 11b Insulator fixing part 11c Lead 11d Contact piece 11d 'Contact 12 _-1 Terminal planting part 12 _-2 Mounting piece 12a Substrate mounting surface 12b Slit hole 12c Partition wall 12d Substrate insertion hole 12e Fixing hole 12f Mounting hole 12g Step 21 Mounting board 22 Circuit board 31 Connection terminal 31a Slope 31b Tapered protrusion 32 Insulator 32a Slope

Claims (1)

End and connection terminals for surface mounting of the connecting surface the thickness plane, a lead extending orthogonally from the connecting terminal, the contact piece extending in the direction opposite to the said connection terminal from the other end of the lead, the lead the base near the said connection terminal and insulator fixing portion protruding in the opposite direction, the base side of the further the lead from the insulator attaching portion, tapered protrusions having a hypotenuse projecting in the same direction as the insulator attaching portion A connection terminal comprising:
Consists of a insulator having a plurality of fixing holes are formed in alignment, and the inclined surface formed at a position corresponding to the oblique sides of the tapered-shaped projections for press-fitting the insulator attaching portion of the connecting terminal,
When the insulator attaching portion of the connection terminals press-fitted fixed to the fixing hole, located on the same surface of the connecting surface of the connecting terminal inclined surface of swash sides and the insulator of the tapered-shaped protrusion abuts Connector characterized by letting it.

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