JP6842230B2 - connector - Google Patents

Description

The present invention relates to a connector having a plurality of terminals.

A board-mounted connector mounted on a circuit board includes a plurality of terminals that are inserted into a plurality of through holes of the circuit board and soldered to a conductor pattern of the circuit board. This type of connector comprises a resin plate with multiple positioning holes into which the terminals can be inserted, and each terminal is positioned by being inserted through the positioning holes, whereby when mounted on a circuit board. , Each terminal is smoothly inserted into the through hole of the circuit board (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-198678

By the way, the positioning hole for positioning the terminal is formed in a cross-sectional shape in which almost no clearance is generated with respect to the cross-sectional shape of the terminal. Therefore, when the terminal is inserted into the positioning hole, the terminal interferes with the inner surface of the positioning hole, the inner surface of the positioning hole is scraped, an unreasonable force is applied to the terminal, and the positioning accuracy is lowered. There was a risk of it occurring.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connector in which terminals are inserted into the positioning holes and the terminals are positioned with high accuracy without any trouble due to interference with the inner surface of the positioning holes. There is.

In order to achieve the above-mentioned object, the connector according to the present invention is characterized by the following (1) to (3).
(1) With the housing
With a plurality of terminals supported by the housing,
An lining plate having a plurality of positioning holes for inserting and aligning the terminals by being assembled to the housing.
It is a connector with
The terminal has a plurality of flat portions when the terminal is viewed in cross section in the longitudinal direction.
The positioning hole has a plurality of positioning surfaces that come into contact with the flat surface portion of each of the terminals to be inserted, and a gap is formed between the positioning surfaces and the terminal to be inserted. It is a non-contact part that does not contact the terminal,
The non-contact portion is formed along the axial direction of the positioning hole, and is composed of a hole portion that bulges outward from the positioning hole.
The hole has a cross-sectional shape consisting of only a part of a circular shape or a part of a quadrangular shape.
A guide portion is formed in the positioning hole on the rear side of the terminal in the insertion direction so as to gradually narrow toward the front in the insertion direction.
When the guide portion is viewed from the rear side in the insertion direction,
The outer peripheral edge portion of the region occupied by the inclined guide portion is connected over the entire circumferential direction of the outer peripheral edge portion so as to surround the positioning surface and the hole portion , and the hole portion is the region. a part of the inner peripheral edge portion so as cutting away toward the outer periphery, the connector entirety of the hole is equal to or positioned inside the outer periphery.
(2) The terminal is formed in a polygonal cross section, and is inserted into the positioning hole so that each corner portion is arranged in the non-contact portion formed of the hole portion (1). The connector described in.
(3) The terminal inserted into the positioning hole of the lining plate is inserted into a through hole of the circuit board and is conductively connected to the conductor pattern of the circuit board (1) or (2). The connector described in.

In the connector having the configuration of (1) above, by inserting the terminal into the positioning hole of the lining plate, a plurality of flat surfaces of the terminal are brought into contact with the positioning surface of the positioning hole, and the terminals are positioned and aligned with high accuracy. Can be done. Moreover, since a gap is formed between the positioning surfaces of the positioning holes and the terminals to be inserted to form a non-contact portion that does not come into contact with the terminals, the inner surface of the positioning holes other than the flat portion of the terminals. It is possible to prevent interference with. Therefore, the terminals can be positioned with high accuracy without any problems such as the inner surface of the positioning hole being scraped or an unreasonable force being applied to the terminals to reduce the positioning accuracy. Further, since the interference with the inner surface of the positioning hole is prevented, the peeling of the plating on the surface of the terminal can be suppressed.
Further, in the connector having the configuration of the above (1), since the non-contact portion is formed along the axial direction of the positioning hole and protrudes to the outside of the positioning hole, the non-contact portion can be easily positioned. It can be provided in the hole.
In the connector having the configuration (2 ) above, since the corners between the flat surfaces of the terminal having a polygonal cross section are arranged in the non-contact portion formed by the holes, the corners of the terminals interfere with the inner surface of the positioning hole. Can be prevented.
In the connector having the above configuration (3 ), the terminals are positioned and aligned with high accuracy without any trouble, so that the terminals can be smoothly inserted into the through holes when mounted on the circuit board. As a result, the workability of mounting on the circuit board can be improved and the productivity can be improved.

According to the present invention, it is possible to provide a connector in which terminals are inserted into the positioning holes and the terminals are positioned with high accuracy without any trouble due to interference with the inner surface of the positioning holes.

The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings. ..

1A and 1B are views for explaining a connector according to the present embodiment, FIG. 1A is a perspective view seen from the front, and FIG. 1B is a perspective view seen from the rear. 2A and 2B are views for explaining the connector according to the present embodiment, FIG. 2A is an exploded perspective view, and FIG. 2B is a perspective view showing a state in which the alignment plate is removed by turning it upside down. is there. FIG. 3 is a cross-sectional view of a terminal for explaining the terminal. FIG. 4 is a plan view of the lining plate. FIG. 5 is a plan view of a positioning hole portion in the lining plate. FIG. 6 is a diagram showing a state in which the terminal is inserted into the positioning hole, and FIGS. 6A and 6B are plan views of the positioning hole portion with a cross-sectional view of the terminal, respectively. FIG. 7 is a plan view of the positioning hole portion with a cross-sectional view of the terminal showing the insertion state of the terminal into the positioning hole having no non-contact portion. FIG. 8 is a plan view of a positioning hole portion with a cross-sectional view of a terminal for explaining a positioning hole having non-contact portions having different shapes. FIG. 9 is a plan view of a positioning hole portion with a cross-sectional view of a terminal for explaining a positioning hole having non-contact portions having different shapes. FIG. 10 is a plan view of a positioning hole portion with a cross-sectional view of a terminal for explaining a positioning hole through which terminals having different shapes are inserted. FIG. 11 is a plan view of a positioning hole portion with a cross-sectional view of a terminal having a triangular cross section and a terminal for explaining the positioning hole. FIG. 12 is a plan view of a positioning hole portion with a cross-sectional view of a terminal having a pentagonal cross section and a terminal for explaining the positioning hole.

Hereinafter, examples of embodiments according to the present invention will be described with reference to the drawings.
1A and 1B are views for explaining a connector according to the present embodiment, FIG. 1A is a perspective view seen from the front, and FIG. 1B is a perspective view seen from the rear. 2A and 2B are views for explaining the connector according to the present embodiment, FIG. 2A is an exploded perspective view, and FIG. 2B is a perspective view showing a state in which the alignment plate is removed by turning it upside down. is there.

As shown in FIGS. 1 (a) and 1 (b) and 2 (a) and (b), the connector 11 according to the present embodiment is a board-mounted connector mounted on the circuit board 1. The connector 11 includes a housing 21, a plurality of terminals 31, and an lining plate 41, and has a joint portion 11A to which a mating connector is joined.

The housing 21 is made of resin and is molded by, for example, injection molding. The housing 21 has a terminal holding portion 22 and a hood portion 23. The terminal holding portion 22 has a plurality of press-fitting holes 24. A connection terminal portion 31a, which will be described later, of the terminal 31 is press-fitted into these press-fit holes 24 from the rear side. The hood portion 23 is formed in a square tubular shape, and is formed on one side of the terminal holding portion 22. The housing of the mating connector is fitted into the hood portion 23. The housing 21 has a fixing surface 25 on the rear side of the bottom surface 21a, and the lining plate 41 is fixed to the fixing surface 25. The fixed surface 25 is formed with fitting recesses 26 in the vicinity of both side portions in the width direction.

The terminal 31 is formed of a conductive metal material such as copper or a copper alloy, and is formed in a rod shape. The terminal 31 has a connection terminal portion 31a on one end side and a mounting terminal portion 31b on the other end side. The terminal 31 is bent in an L shape in a side view, and extends in a direction in which the mounting terminal portion 31b is orthogonal to the connection terminal portion 31a.

The terminal 31 is press-fitted into the press-fitting hole 24 formed in the terminal holding portion 22 of the housing 21 from the rear side of the housing 21 with the mounting terminal portion 31b facing the bottom surface 21a side of the housing 21. As a result, the connection terminal portion 31a of the terminal 31 is arranged in the hood portion 23, and the mounting terminal portion 31b projects downward from the bottom surface 21a of the housing 21. The connection terminal portions 31a of the terminals 31 are arranged in the vertical and horizontal directions in the hood portion 23 of the housing 21. The mounting terminal portions 31b of the terminals 31 are arranged in the front-rear and left-right directions of the housing 21. The end portions of the connection terminal portions 31a of the respective terminals 31 are arranged in the same plane, and similarly, the end portions of the mounting terminal portions 31b of the respective terminals 31 are arranged in the same plane. When molding the housing 21, these terminals 31 may be integrated with the terminal holding portion 22 of the housing 21 by insert molding.

FIG. 3 is a cross-sectional view of a terminal for explaining the terminal.
As shown in FIG. 3, the terminal 31 is formed to have a quadrangular cross section. In this example, the terminal 31 is formed in a square cross section. As a result, the terminal 31 has four side surfaces (hereinafter, this side surface is referred to as a flat surface portion 33) of the terminal 31 when the terminal 31 is viewed in cross section in the longitudinal direction, and these plane surfaces are also used. It has a four-sided portion 34 formed between the portions 33. The terminal 31 is formed in an L shape having a connection terminal portion 31a and a mounting terminal portion 31b by cutting a square wire having a square cross section to a predetermined length and then bending an intermediate portion.

The lining plate 41 is made of resin and is formed in a flat plate shape. The lining plate 41 is fixed to the fixing surface 25 on the bottom surface 21a side of the housing 21. Then, the lining plate 41 is arranged along the bottom surface of the housing 21 in a state of being attached to the housing 21.

FIG. 4 is a plan view of the lining plate.
As shown in FIG. 4, the lining plate 41 has a pair of fixed piece portions 42 projecting laterally, and these fixed piece portions 42 have a fitting convex portion 43 on one side surface. Is formed. The alignment plate 41 presses the fitting convex portion 43 side toward the housing 21 against the fixed surface 25 of the housing 21, so that the fitting convex portion 43 is formed on the fixed surface 25 of the housing 21. It is fitted to the 26 and assembled to the housing 21 in this state.

The lining plate 41 is formed with a plurality of positioning holes 45 penetrating the front and back surfaces. The positioning holes 45 are arranged in the front-rear and left-right directions of the housing 21, and the mounting terminal portion 31b of the terminal 31 fixed to the housing 21 is inserted therethrough. The arrangement of the positioning holes 45 is the same as that of the through holes 2 formed in the circuit board 1. As a result, the mounting terminal portion 31b of the terminal 31 is inserted into the positioning hole 45 of the lining plate 41, and is positioned in the same arrangement as the through hole 2 of the circuit board 1.

FIG. 5 is a plan view of a positioning hole portion in the lining plate.
As shown in FIG. 5, the positioning hole 45 is formed to have a quadrangular cross section similar to the cross-sectional shape of the terminal 31. In this example, the positioning hole 45 is formed in a square cross section. As a result, the positioning hole 45 has a positioning surface 46 composed of four planes. These positioning surfaces 46 come into contact with the flat surface portion 33 of the mounting terminal portion 31b of the terminal 31 inserted into the positioning hole 45. As a result, the mounting terminal portion 31b of the terminal 31 is positioned by the positioning hole 45.

Further, the positioning hole 45 has a non-contact portion 47 at a corner between the four positioning surfaces 46. These non-contact portions 47 are formed of holes having a circular cross section formed along the axial direction of the positioning holes 45, and bulge outward away from the center side of the positioning holes 45. As described above, since these non-contact portions 47 bulge outward, they do not come into contact with the mounting terminal portion 31b of the terminal 31 inserted into the positioning hole 45.

The positioning hole 45 is formed with a guide portion 48 that gradually narrows toward the front in the insertion direction of the mounting terminal portion 31b of the terminal 31 at one edge portion through which the mounting terminal portion 31b of the terminal 31 is inserted. The guide portion 48 guides the mounting terminal portion 31b of the terminal 31 to the center of the positioning hole 45 by contacting the mounting terminal portion 31b of the terminal 31 inserted into the positioning hole 45. As a result, the mounting terminal portion 31b of the terminal 31 is guided to the positioning hole 45.

In order to assemble the lining plate 41 to the housing 21, the fitting convex portion 43 of the lining plate 41 is brought close to the housing 21 side, and the mounting terminal portion 31b of the terminal 31 is inserted into the positioning hole 45 of the lining plate 41. Let me. Then, the fitting convex portion 43 of the lining plate 41 is fitted into the fitting concave portion 26 of the fixing surface 25 of the housing 21. As a result, the lining plate 41 is positioned with respect to the housing 21 and fixed to the fixing surface 25. Then, when the lining plate 41 is assembled to the housing 21, the mounting terminal portion 31b of the terminal 31 inserted into the positioning hole 45 of the lining plate 41 is positioned, and the tip portion thereof protrudes from the lining plate 41. It becomes.

When the lining plate 41 is assembled to the housing 21 in this way, as shown in FIG. 6A, the positioning surface 46 of the positioning hole 45 comes into contact with the flat surface portion 33 of the mounting terminal portion 31b of the terminal 31. The mounting terminal portion 31b of the terminal 31 is positioned by the positioning hole 45. Therefore, the mounting terminal portion 31b of the terminal 31 is inserted into the positioning hole 45 to correct the inclination, and the arrangement thereof is arranged with high accuracy so as to be the same arrangement as the through hole 2 of the circuit board 1.

Then, the connector 11 in which the mounting terminal portions 31b of the terminals 31 are arranged with high accuracy by the lining plate 41 can smoothly insert the mounting terminal portion 31b of the terminal 31 into the through hole 2 of the circuit board 1.

The mounting terminal portion 31b is inserted into the through hole 2 of the circuit board 1, and the mounting terminal portion 31b is soldered to the conductor pattern of the circuit board 1 to be mounted on the circuit board 1. The connector 11 is mounted on the hood portion 23 of the housing 21. The housing of the mating connector is fitted, whereby the mating connector is joined to the joint portion 11A. Then, the connection terminal portion 31a of the terminal 31 of the connector 11 is connected to the female terminal of the mating connector, and the female terminal of the mating connector is conducted to the conductor pattern of the circuit board 1.

As described above, according to the connector 11 according to the present embodiment, by inserting the terminal 31 into the positioning hole 45 of the lining plate 41, the plurality of flat surfaces 33 of the terminal 31 are positioned on the positioning surface of the positioning hole 45. The terminals 31 can be positioned and aligned with high accuracy by contacting the 46. Moreover, since the positioning surfaces 46 of the positioning holes 45 form a gap between the positioning surfaces 46 and the terminals 31 to be inserted to form a non-contact portion 47 that does not come into contact with the terminals 31, other than the flat portion 33 of the terminals 31. It is possible to prevent the portion of the positioning hole 45 from interfering with the inner surface. Therefore, the terminal 31 can be positioned with high accuracy without any problems such as the inner surface of the positioning hole 45 being scraped or an unreasonable force being applied to the terminal 31 to reduce the positioning accuracy. Further, since the interference with the inner surface of the positioning hole 45 in the portion other than the flat surface portion 33 of the terminal 31 is prevented, the peeling of the plating on the surface of the terminal 31 can be suppressed.

Here, the terminal 31 may be slightly twisted in the processing process or the like. As shown in FIG. 7, when the twisted terminal 31 is inserted into the positioning hole 45A having the same cross-sectional shape as the terminal 31, the corner portion 34 which is a portion other than the flat portion 33 of the terminal 31 Interferes with the inner surface of the positioning hole 45A. If the twist of the terminal 31 is large, the interference of the corner portion 34 with the inner surface of the positioning hole 45A may occur even if the corner portion 34 of the terminal 31 is chamfered to form a corner surface or a round surface. If the corner portion 34 of the terminal 31 interferes with the inner surface of the positioning hole 45A in this way, the inner surface of the positioning hole 45A may be scraped or an unreasonable force may be applied to the terminal 31 to reduce the positioning accuracy.

On the other hand, in the connector 11 according to the present embodiment, the corner portion 34, which is a portion of the terminal 31 other than the flat portion 33, is arranged in the non-contact portion 47 formed of the hole portion. Therefore, as shown in FIG. 6B, even if the terminal 31 is twisted, it is possible to prevent the corner portion 34 of the terminal 31 from interfering with the inner surface of the positioning hole 45, and the inner surface of the positioning hole 45 is formed. The terminal 31 can be positioned with high accuracy without any problems such as scraping or an excessive force applied to the terminal 31 to reduce the positioning accuracy.

Further, since the non-contact portion 47 is formed along the axial direction of the positioning hole 45 and is composed of a hole portion that bulges outward from the positioning hole 45, the non-contact portion 47 can be easily provided in the positioning hole 45. Can be done.

As described above, in the connector 11 according to the present embodiment, the terminals 31 are positioned and aligned with high accuracy without any trouble, so that the terminals 31 can be smoothly inserted into the through holes 2 when mounted on the circuit board 1. Can be done. As a result, the workability of mounting on the circuit board 1 can be improved and the productivity can be improved.

The non-contact portion 47 of the positioning hole 45 is not limited to a hole having a circular cross section, and may be a hole having a square cross section, for example, as shown in FIGS. 8 and 9. good. The positioning hole 45 shown in FIG. 8 has a shape in which two corner portions of the non-contact portion 47 formed of a hole having a square cross section are connected to the positioning surface 46, and the positioning hole 45 shown in FIG. 9 has a shape. The two sides of the non-contact portion 47, which is a hole having an angular cross section, are connected to the positioning surface 46.

Further, the cross-sectional shape of the terminal 31 may be any shape as long as it has a plurality of flat surface portions 33.

For example, as shown in FIG. 10, the terminal 31 may be formed in a substantially rectangular cross section, and the arc surface 35 may be formed between the four plane portions 33. Also in this case, the terminal 31 is positioned when the positioning surface 46 of the positioning hole 45 comes into contact with the flat surface portion 33. Further, by arranging the arc surface 35 in the non-contact portion 47, interference of the arc surface 35 with the inner surface of the positioning hole 45 can be prevented.

Further, as shown in FIG. 11, when the terminal 31 has a triangular cross section, the positioning hole 45 is formed in a triangular cross section having a positioning surface 46 formed of three planes in contact with the flat surface portion 33 of the terminal 31. To. Then, in the positioning hole 45, the space between the three positioning surfaces 46 is a non-contact portion 47 that bulges outward.

Similarly, as shown in FIG. 12, when the terminal 31 has a pentagonal cross section, the positioning hole 45 is formed into a pentagonal cross section having a positioning surface 46 composed of five planes in contact with the flat surface portion 33 of the terminal 31. Will be done. Then, in the positioning hole 45, the space between the five positioning surfaces 46 is a non-contact portion 47 that bulges outward.

The present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

Here, the features of the above-described connector embodiments according to the present invention are briefly summarized and listed below in [1] to [4], respectively.
[1] With the housing (21)
A plurality of terminals (31) supported by the housing (21),
A lining plate (41) having a plurality of positioning holes (45) that are assembled to the housing (21) to allow the terminals (31) to be inserted and aligned.
It is a connector (11) provided with
The terminal (31) has a plurality of flat surfaces (33) when the terminal is viewed in cross section in the longitudinal direction.
The positioning hole (45) has a plurality of positioning surfaces (46) that come into contact with the plane portions (33) of the terminals (31) to be inserted, and the positioning surfaces (46) are between the positioning surfaces (46). A connector characterized in that a gap is formed between the terminal (31) to be inserted and the non-contact portion (47) does not come into contact with the terminal (31).
[2] The non-contact portion (47) is formed along the axial direction of the positioning hole (45) and comprises a hole portion that bulges outward from the positioning hole (45) [1]. ] Described in the connector.
[3] The terminal (31) is formed in a polygonal cross section, and by being inserted into the positioning hole (45), each corner portion (34) is formed of the hole portion by the non-contact portion (47). The connector according to [2], which is characterized in that it is arranged in.
[4] The terminal (31) inserted into the positioning hole (45) of the lining plate (41) is inserted into the through hole (2) of the circuit board (1) and the conductor of the circuit board (1). The connector according to any one of [1] to [3], which is conductively connected to a pattern.

1: Circuit board 2: Through hole 11: Connector 21: Housing 31: Terminal 33: Flat surface 34: Square 41: Aligning plate 45: Positioning hole 46: Positioning surface 47: Non-contact portion

Claims (2)

With the housing
With a plurality of terminals supported by the housing,
An lining plate having a plurality of positioning holes for inserting and aligning the terminals by being assembled to the housing.
It is a connector with
The terminal has a plurality of flat portions when the terminal is viewed in cross section in the longitudinal direction.
The positioning hole has a plurality of positioning surfaces that come into contact with the flat surface portion of each of the terminals to be inserted, and a gap is formed between the positioning surfaces and the terminal to be inserted. It is a non-contact part that does not contact the terminal,
The non-contact portion is formed along the axial direction of the positioning hole, and is composed of a hole portion that bulges outward from the positioning hole.
The hole has a cross-sectional shape consisting of only a part of a circular shape or a part of a quadrangular shape.
A guide portion is formed in the positioning hole on the rear side of the terminal in the insertion direction so as to gradually narrow toward the front in the insertion direction.
When the guide portion is viewed from the rear side in the insertion direction,
The outer peripheral edge portion of the region occupied by the inclined guide portion is connected over the entire circumferential direction of the outer peripheral edge portion so as to surround the positioning surface and the hole portion , and the hole portion is the region. a part of the inner peripheral edge portion so as cutting away toward the outer periphery, the connector entirety of the hole is equal to or positioned inside the outer periphery. The terminal according to claim 1, wherein the terminal is formed in a polygonal cross section and is inserted into the positioning hole so that each corner portion is arranged in the non-contact portion formed of the hole portion. connector.

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