JPH10312865A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance mounting workability onto a mounting board and productivity by surely realizing the positioning and the array of connection terminals against the mounting board on the constitution of a surface mounting type connector. SOLUTION: A surface mounting type connector is made of plural connection terminal 31 in which the plate thickness of one end of a surface mounting connection terminal 11a is a connection face, the other side of a lead 121c extending in an orthogonal direction from the terminal 11a is a contact piece, and an insulator fastening portion 11b protruding in the reverse direction of the connection terminal 11a is formed in the vicinity of the root of the lead 11c, and an insulator 32 in which securing hole 12e corresponding to the insulator securing portion 11b is arraying formed. Connection terminal positioning means 31a, 32a arraying the connection faces of the connection terminals 11a are provided at the press fitting and securing time of the insulator securing portions 11b into the securing holes 12e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a surface mount type connector, and more particularly to a method of realizing positioning and alignment of a connection terminal with respect to a mounting board to improve mounting workability and productivity on the mounting board. Regarding the intended connector.

[0002]

2. Description of the Related Art FIG. 5 is a view for explaining an example of the configuration of a conventional connector including a use state, FIG. 6 is a view for explaining connection terminals of the conventional connector, and FIG. FIG. 8 is a diagram for explaining a method of fixing a connection terminal to an insulator, and FIG. 9 is a diagram for explaining a problem.

FIG. 1 shows an example in which a connector is a jack connector having a terminal row and a counterpart corresponding to the jack connector is a circuit board. In FIG. 5, the conventional connector 1 is surface-mounted on a mounting board 21, and a circuit board 22 is inserted into the connector 1 as shown by an arrow A, so that a corresponding circuit between the mounting board 21 and the circuit board 22 is formed. The connection can be established.

That is, in FIG. 5, the connector 1 has a plurality of connection terminals 11 having connection terminals 11 a corresponding to the electrodes 21 a patterned on the mounting substrate 21.
And an insulator 12 in which the connection terminals 11 are planted in a row by being fixed by press-fitting at the insulator fixing portion 11b.

First, the connection terminal 11 will be described with reference to FIG. 6 and the insulator 12 will be described with reference to FIG. 7 for easy understanding. That is, FIG. 6 showing the connection terminals in a perspective state.
In this case, the flat connection terminal 11 in which a metal plate is formed by a normal press punching technique has a connection terminal 11a described with reference to FIG.
At the end of the lead 11c extending in a direction substantially orthogonal to the other end of the connection terminal, a contact piece 11d protruding at a predetermined length "a" in the opposite direction to the connection terminal is provided at the end at the connection terminal side. In addition, an insulator fixing portion 11b, which has a predetermined length "b" and protrudes toward one side of the contact, is formed on the side of the lead 11c on the contact side. Is what is being done.

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 to 7C illustrate an insulator in which a plurality of the connection terminals are aligned and implanted, where (7-1) is a side view and (7-2) is an arrow a to.
(7-3) is a cross-sectional view taken along arrows b-b ', and (7-4) is a cross-sectional view taken along arrows c-c'.

In FIG. 7, the insulator 12 for implanting the connection terminals 11 at a constant pitch "p" has a block-like shape long enough to cover the area of the connection terminals 11 except for the connection terminals 11a and long in the terminal row direction. the terminal buried portion 12 _-1, and the said 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 , Which are integrally formed.

[0008] The terminal planting the portion 12 _-1, fixing holes 12e to be described later in slightly exceeds the width of the thickness of the connecting terminal 11
Are formed in the terminal row direction at the pitch "p" via the partition wall 12c, and the circuit board 22 described with reference to FIG. A substrate insertion hole 12d that can be inserted to a required position in parallel with the surface 12a is formed across the slit hole arrangement region.

In the inner slit hole 12b, as shown in (7-4) when the area of the slit hole is viewed in section, the insulating terminal is fixed when the connection terminal 11 is press-fitted from the contact side and positioned at a predetermined position. The bulge 11 is press-fitted to a position corresponding to the portion 11b up to the contact position of the insulator fixing portion 11b.
The fixing hole 12e is formed in such a size that the insulator fixing portion 11b and consequently the connection terminal 11 can be positioned and fixed by biting into the wall surface of b '.

The board insertion hole 12d is formed so that the contact area of the connection terminal 11 positioned by the fixing hole 12e is located in a state where the contact area is exposed inside the board insertion hole 12d. The side is formed as an opening.

Therefore, between the adjacent slit holes 12b, only the substrate insertion hole 12d is formed as shown in (7-3) when the area of the partition wall 12c is viewed in cross section. Therefore, as shown in (8-1) of FIG.
The connection terminal 11 having the contact 11d 'at the top is inserted into the slit hole 12b as shown by the arrow B in FIG.
By press-fitting the insulator fixing portion 11b into the fixing hole 12e of the slit hole 12b until the tip of the insulator fixing portion 11b abuts,
As shown in (8-2), the connection terminal 11 can be fixed to the insulator 12.

In this case, the bulge 11b 'is provided only on one side in the width direction of the insulator fixing portion 11b, as described above, and the bulge-free side of the insulator fixing portion 11b is fixed at the time of press fitting. Since the fixing hole 12e is in contact with the side wall surface in the width direction of the fixing hole 12e, the connection terminal 11
And positioning with respect to the insulator can be realized at the same time.

On the other hand, the illustrated step 12g provided on the end surface of the insulator 12 on the substrate mounting surface side corresponds to the mounting surface 11 of the connection terminal 11 on the mounting substrate of the connection terminal 11a.
a ′ is provided to match the above-mentioned substrate mounting surface 12a of the insulator 12, but the mounting substrate 21 and the insulator 1 are brought into contact by the contact of the edge of the mounting substrate with the step 12g.
2 can be easily positioned.

Then, after the insulator 12 to which the connection terminal 11 is fixed is positioned on the mounting board 21 with the step 12g, the mounting hole 12f of the insulator 12 and the mounting board 21 at the position corresponding to the mounting hole. The connection terminals 11a of the connection terminals 11 and the electrodes 21a of the mounting board 21 can be brought into close contact with each other by fixing them with screws or the like passing through the mounting holes 21b provided.

Therefore, the conventional connector 1 which is excellent in workability for mounting on the mounting board 21 and can easily connect between the mounting board 21 and the circuit board 22 can be configured as shown in FIG.

[0016]

FIG. 9 for explaining a problem.
(9-1) illustrates a connection terminal shape in which inconvenience is likely to occur, and (9-2) and (9-3) are views illustrating a state when the connection terminal is fixed to an insulator.

That is, the size of the bulge 11b ″ provided on the insulator fixing portion 11b is
b, it is often difficult to make the size of the two bulges 11b 'equal at all times,
As a result, for example, as shown in (9-1) of the figure, the bulges 11b "may have different sizes from each other, or the bulge size may vary.

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 bite into the insulator side wall surface as the bulge 11b" is increased. The connection terminal 11 may be fixed at an angle to the insulator 12 due to the difference between the tip portion and the root portion of the portion, and the connection terminals 1 aligned in the row direction may be fixed.
In the state of alignment between the first connection terminals 11a, for example, (9-2) and (9-
A variation “δ” as shown in 3) occurs.

This means that a gap is formed between the electrode 21a of the mounting board 21 and the connection terminals 11a of the plurality of connection terminals 11, and it is difficult to secure a reliable connection between the two.

Therefore, in the connector 1 provided with the connection terminal 11 ', the alignment state of the connection terminal 11a is inspected before mounting on the mounting board 21, and the connection terminal area of the connection terminal 11' which is displaced is corrected. Therefore, there is a problem that it takes a lot of man-hours to expect improvement in productivity.

[0021]

The object of the present invention is to provide a connection terminal for surface mounting having one end having a plate thickness surface as a connection surface, and the other end of a lead extending in a direction orthogonal to the connection terminal as a contact piece. A plurality of connection terminals having an insulator fixing portion projecting in the opposite direction of the connection terminal near the root of the lead, and fixing holes corresponding to the insulator fixing portion of the connection terminal are formed in alignment. The connector is provided with connection terminal positioning means for positioning the connection surface on the same surface when the insulator fixing portion is press-fitted into the fixing hole.

If the conventional connector is provided with means for restricting the inclination of the connection terminal with respect to the insulator when the connection terminal is fixed, the inclination of the connection terminal with respect to the insulator described with reference to FIG. 9 can be suppressed.

Therefore, according to the present invention, the connector is provided with a slope inclined near the connection terminal press-fitting direction near the fixing hole of the insulator and a slope having the same slope as the slope in a region corresponding to the slope of the connection terminal. Is composed.

This means that when the connection terminal is pressed into the insulator, the connection terminal moves along the slope, so that the inclination of the connection terminal with respect to the insulator in the fixed state is corrected. Is shown.

Therefore, even if the size of the bulge in the insulator fixing portion of the connection terminal varies, the inclination of the connection terminal with respect to the insulator at the time of fixing the connection terminal can be suppressed, and the above-mentioned before mounting is performed. This eliminates the need for man-hours for repairing the connection terminal, thereby providing a connector capable of improving productivity by reducing the number of man-hours for repair.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a view for explaining a configuration example of a connector according to the present invention, FIG. 2 is a view for explaining connection terminals of the connector according to the present invention, and FIG. FIG. 4 is a diagram illustrating a method of fixing the connection terminal to the insulator according to the present invention.

In the figure, the case where the present invention is applied to the connector described in FIG. 5 is taken as an example. Therefore, the same symbols are given to the same target members and parts as in FIGS.
Duplicate descriptions are omitted.

The connector 3 according to the present invention shown in FIG. 1 comprises a plurality of connection terminals 31 and an insulator 32 which is arranged in a line in the same manner as the connector 1 by press-fitting. It becomes.

Here, as in the case of the connector 1, the connection terminal 31 in FIG. 2 and the insulator 32 in FIG. 3 will be described first. That is, FIG. 2 shows the connection terminal in a perspective view similarly to FIG. 6, and the connection terminal 31 has the same shape as the connection terminal 11 described in FIG. Is the insulator fixing portion 11
The tapered protrusion 31b formed on the oblique side 31a in the direction away from the contact 11b '
It is additionally formed by projecting to the side.

On the other hand, FIG.
(3-1) is a side view, (3-2) is a plan view at arrows a to a ', (3-3) is a cross-sectional view at arrows b to b', and (3-4) is an arrow c to c. The sectional views at c 'are shown.

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 with reference to FIG. 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 of the connection terminal 31 near the fixing hole 12e in the hole 12b.

Accordingly, only the board insertion hole 12d appears between the adjacent slit holes as shown in FIG. 3D, which is the same as FIG. 7B. Therefore, as shown in (4-1) of FIG. 4, the connection terminal 3 having the contact 11d 'at the top is formed in the slit hole 12b of the insulator 32.
1 is inserted as shown by arrow B, and the insulator fixing portion 11b of the connection terminal 31 is
When the connection terminal 31 is inserted into the fixing hole 12e, the connection terminal 31 can be fixed to the insulator 32 as shown in (4-2).

In this case, the connection terminal 31 is fixed to the insulator 32 by press-fitting the edge fixing portion 11b of the connection terminal 31 into the fixing hole 12e, and at the same time, the connection terminal 31 is fixed.
The inclination of the connection terminal 31 with respect to the insulator 32 is corrected by sliding due to the contact between the oblique side 31a and the inclined surface 32a of the insulator 32, so that the connection terminal 3 described with reference to FIG.
In other words, the variation “δ” of the connection terminal 11a with respect to the substrate mounting surface 12a of the insulator 32 can be suppressed.

Accordingly, the connector 3 which is excellent in workability for mounting on the mounting board 21 shown by the broken line C and which can easily connect the mounting board 21 to the circuit board 22 shown by the broken line D is shown in FIG. It can be configured as shown in an inner circle (a) in which a part is extracted and enlarged.

In the connector 3 having such a configuration, the oblique side 31 of the connection terminal 31 when the connection terminal 31 is press-fitted.
The connection terminal itself obtains a moving force of the insulator fixing portion 11b toward the side on which the bulge is not formed by the sliding of the insulator 32 and the inclined surface 32a of the insulator 32. There is an advantage that effective positioning can be realized by close contact with the hole wall surface.

[0036]

As described above, according to the present invention, it is possible to provide a connector in which the positioning of the connection terminals with respect to the mounting board is realized and the workability of mounting on the mounting board and the productivity are improved.

In the description of the present invention, a case where the terminal row is a single-row connector is taken as an example, but 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 clear.

[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 connection terminals of the connector according to the present invention.

FIG. 3 is a diagram illustrating an insulator according to the present invention.

FIG. 4 is a diagram illustrating a method for 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 illustrating 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 illustrates a problem. It is.

[Explanation of symbols]

3 connector 11a connected terminals 11b insulator attaching portion 11c leads 11d contact piece 11d 'contacts 12 _-1 terminals buried portion _12-2 mounting pieces 12a board mounting surface 12b slits 12c partition wall 12d substrate insertion hole 12e fixed hole 12f mounting hole 12g Step 21 Mounting board 22 Circuit board 31 Connection terminal 31a Oblique side 31b Tapered protrusion 32 Insulator 32a Inclined surface

Claims (2)

[Claims] 1. A connection terminal for surface mounting having one end having a plate thickness surface as a connection surface, the other end of a lead extending orthogonally from the connection terminal being a contact piece, and the connection terminal being located near the root of the lead. A plurality of connection terminals formed with insulator fixing portions protruding in the opposite direction, and an insulator formed with alignment holes corresponding to the insulator fixing portions of the connection terminals aligned with each other, A connector provided with connection terminal positioning means for positioning the connection surface on the same surface when the insulator fixing portion is press-fitted into the fixing hole. 2. The connecting terminal positioning means according to claim 1, further comprising: a tapered projection having an oblique side in the vicinity of the insulator fixing portion and formed to protrude toward the insulator fixing portion. A slope formed at a position corresponding to the oblique side immediately before the connection terminal fixing position.