JPH11329538A - Connector for circuit board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector for a circuit board which does not deform the circuit board and does not shave an electric circuit on the circuit board in fixing the connector. SOLUTION: In this connector 100 for a circuit board, the lower end of a fixing member 40 is inserted into a connector fixing hole 12 formed in a circuit board 10, a connector housing 30 is energized to the circuit board 10, and rotated to engage a pair of engaging projections 43 with the back surface of the circuit board 10. At that time, a contact part 22 is pressed against an electric circuit 11 on the circuit board 10 by the elastic deformation of a connecting terminal 20, and thereby, the connecting terminal 20 can surely be brought into contact with the electric circuit 11. Because the contact part 22 is bent in the rotating direction, the contact part 22 does not shave the electric circuit 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for connecting an electric wire to an electric circuit formed on a surface of a circuit board, and more particularly, to a connector which can be mounted without deforming the circuit board, and The present invention relates to a circuit board connector improved so as not to scrape an electric circuit formed in the circuit board.

[0002]

2. Description of the Related Art Conventionally, various circuit boards having an electric circuit formed on the surface of the board have been used. However, these circuit boards have been miniaturized by arranging a large number of electric circuits in a narrow area. Not only can they be made, but some have flexibility, and are widely used, for example, for electric wiring of automobiles.

Incidentally, in order to connect an electric wire to such an electric circuit of a circuit board, for example, Japanese Unexamined Patent Publication No.
It requires a dedicated connector as described in Japanese Patent Publication No. 29-29 and the like. As shown in FIG. 7, this type of connector 1
Are engaged with the end 3 of the circuit board 2. That is, when the connector 1 is engaged with the circuit board 2, the connection terminals (not shown) held inside the connector 1
, And an electric circuit (not shown) extending from the rear end of the connector 1 and the electric circuit 4 are electrically connected to each other.

[0004]

However, all of the above-mentioned conventional connectors 1 are of the type to be attached to the end of the circuit board 2, and the end of the circuit board 2 may be deformed in some cases. . Also, in some conventional connectors 1, the connection terminal may cut off the electric circuit when the connector is attached to the circuit board 2.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems. A connector for a circuit board which can be mounted without deforming a circuit board and which does not cut off an electric circuit formed on the circuit board. Is to provide.

[0006]

An object of the present invention is to provide a connector for connecting an electric wire to an electric circuit formed on a surface of a circuit board, the connector being provided around a connector mounting hole passing through the circuit board. A connection terminal formed from a conductive metal plate that is in contact with the electric circuit, a connector housing that holds the connection terminal, and is inserted into the connector mounting hole to engage with the circuit board; Fixing means for fixing the connector housing to the circuit board, wherein the connection terminal includes: a holding portion held by the connector housing; a contact portion that contacts the electric circuit; and the holding portion and the contact portion. The problem can be solved by a circuit board connector having a connection portion capable of elastic deformation.

Preferably, the contact portion is curved in a direction in which the contact portion slides on the circuit board, and a convex surface thereof contacts the electric circuit. Preferably, the curved contact portion of the connection terminal is formed to be elastically deformable, and presses the contact portion onto the electric circuit when the connector housing is fixed to the circuit board. Preferably, the connector housing is formed in a tubular shape, and holds a holding portion of the connection terminal therein.
More preferably, the fixing means is inserted through a notch connected to the connector mounting hole to the back side of the circuit board, and rotates around an axis of the connector mounting hole to rotate the circuit board. An engagement protrusion that engages with the back surface of the substrate.

In the connector for a circuit board having the above-described structure according to the present invention, the connector is mounted in a connector mounting hole penetrating through the circuit board. The substrate is not deformed. Also, since the fixing means is inserted into the connector mounting hole penetrating through the circuit board, that is, the connector is attached to the circuit board by approaching the circuit board in a direction perpendicular to the surface thereof, the connection terminal is an electric circuit. There is no such thing as shaving. Also, since the contact portion of the connection terminal is elastically pressed onto the electric circuit to electrically connect the two, the electric circuit and the connection terminal can be reliably brought into contact. Furthermore, since the contact portion of the connection terminal is curved in the sliding direction and the convex surface thereof contacts the electric circuit, the connection terminal slides on the electric circuit for the purpose of engaging the fixing means with the circuit board. If you do,
The connection terminal does not cut off the electric circuit.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a circuit board connector according to the present invention will be described below in detail with reference to FIGS. FIG. 1 is an overall perspective view showing an embodiment of a circuit board connector according to the present invention. FIG. 2 is an enlarged perspective view showing the circuit board connector shown in FIG. 1 and a main part of the circuit board.
Is an exploded perspective view showing the circuit board connector shown in FIG. 2,
4 is a longitudinal sectional view of the circuit board connector shown in FIG. 2, FIG. 5 is an enlarged side view showing a contact portion and a connection portion of a connection terminal,
FIG. 6 is a front view showing a contact portion of the connection terminal shown in FIG.

As shown in FIGS. 1 and 2, a circuit board connector 100 according to this embodiment is for connecting electric wires W from another system to a plurality of electric circuits 11 formed on the surface of a circuit board 10. Is mounted in a connector mounting hole 12 penetrating through the circuit board 10. The mounting direction is as shown by an arrow A in the figure, that is, from the axial direction of the connector mounting hole 12, that is, the direction perpendicular to the surface of the circuit board 10. Note that a total of five through holes 1 penetrating through the circuit board 10 are provided.
3, sockets for holding display lamps for illuminating the instrument panel and the like of the automobile are attached.

As shown in FIG. 3, a connector 10 for a circuit board is provided.
0 indicates a total of six connection terminals 20 and these connection terminals 2
0, a bottomed cylindrical connector housing 30 for holding 0;
A fixing member 40 as fixing means for fixing the connector housing 30 to the circuit board 10 is provided.

The connection terminal 20 is formed by press-forming a conductive strip-shaped metal plate, and has a generally L-shaped bent shape. Then, the connector housing 30
Holding portion 21 held in close contact with the inner wall surface of the cylinder
A contact portion 22 extending from a lower end portion of the holding portion 21 and extending radially outward; and a holding portion 21 and a contact portion 22.
And a connecting portion 23 for elastically connecting the two. Note that an unillustrated electric wire fixing portion for fixing the electric wire W is provided at the upper end of the holding portion 21.

As shown in FIG. 5, when the connection terminal 20 is in an independent state, the angle θ 1 formed by the holding portion 21 and the contact portion 22 is about 1
20 degrees. In contrast, the connector housing 30
When mounted on the circuit board 10, as shown by imaginary lines in FIG.
Is about 90 degrees. At this time, an elastic restoring force is generated in the connecting portion 23, and the contact portion 22 is
Press elastically upward.

Further, as shown in FIG.
Are curved so as to be convex downward when viewed from the front. Thus, even when the contact portion 22 slides on the circuit board 10, the contact portion 22 does not cut the electric circuit 11. The contact portion 22 can be elastically deformed by being formed in a curved shape, and as shown by an imaginary line in FIG.
When pressed toward the circuit board 10 by 4, it is elastically deformed and comes into close contact with the electric circuit 11.

As shown in FIGS. 3 and 4, the connector housing 30 has a cylindrical main body portion 31 injection-molded from an insulating resin material, and an upper bottom portion 32 for closing the upper end thereof.
And Pockets (not shown) for holding a total of six connection terminals 20 are provided on the inner wall surface of the main body portion 31. Further, a total of six electric wires W connected to the connection terminal 20 are taken out through electric wire taking-out holes 33 formed through the upper bottom portion 32. Further, when the lower end surface 34 of the main body portion 31 is attached to the circuit board 10,
2 is pressed onto the circuit board 10.

The fixing member 40 is a cylindrical part injection-molded from an insulating resin material, and has a bottomed cylindrical insertion part 41 inserted into the connector housing 30.
And a large-diameter portion 42 connected to the lower end of the insertion portion 41.
And a pair of engagement projections 43 protruding on the outer peripheral surface of the large diameter portion 42. When the insertion portion 41 is inserted into the connector housing 30, it comes into close contact with the back surface of the connection terminal 20, and fixes the connection terminal 20 in the connector housing 30.

An engaging recess 44 is formed in the outer peripheral surface of the insertion portion 41. As a result, the engagement recess 4
When the engaging projection 4 and the engaging projection (not shown) on the connector housing 30 side are engaged, the connector housing 30 and the fixing member 40 are integrated and can be integrally rotated in the direction of arrow C.

Further, as shown in FIGS. 2 and 4, the engagement projection 43 is inserted into a pair of cutouts 14 provided continuously with the connector mounting holes 12 of the circuit board 10, and is provided on the back surface 15 side of the circuit board 10. Protrude into. Then, in this state, the fixing member 40
Is rotated in the direction of arrow B in FIG.
3 is in close contact with the back surface 15 of the circuit board 10, and the connector housing 30 is fixed to the circuit board 10.

Next, the assembly of the circuit board connector 100 having the above configuration will be described. First, as shown in FIG. 3, a total of six electric wires W are inserted into through holes provided in the upper bottom portion 32 of the connector housing 30. Then, the ends of these wires W are fixed to fixing portions (not shown) provided at the ends of the holding portions 21 of the connection terminals 20.

Next, the holding portion 21 of the connection terminal 20 to which the electric wire W is connected is inserted into a pocket (not shown) projecting from the inner wall surface of the connector housing 30. Thereafter, when the insertion portion 41 of the fixing member 40 is inserted into the connector housing 30, a total of six connection terminals 20 are sandwiched and fixed by the connector housing 30 and the fixing member 40. Next, by rotating the fixing member 40 relative to the connector housing 30 in the direction of arrow C, the engagement recess 44 provided on the fixing member 40 and the connector housing 30 are rotated.
By engaging an engaging projection (not shown) on the side, the two can be integrated.

Next, a procedure for attaching the circuit board connector 100 assembled as described above to the circuit board 10 will be described. As shown in FIG. 2 and FIG.
The pair of engaging projections 43 provided on the fixing member 4 are aligned with the notches 14 connected to the connector mounting holes 12.
When the large-diameter portion 42 is inserted into the connector mounting hole 12,
The pair of engagement projections 43 project toward the back surface 15 of the circuit board 10. Thereafter, when the connector housing 30 is gripped by hand and rotated in the direction of arrow B while being urged toward the circuit board 10, the fixing member 40 also rotates integrally with the connector housing 30. Accordingly, the pair of engaging projections 43 provided on the fixing member 40 comes into close contact with the back surface 15 of the circuit board 10.
Can be fixed.

At this time, the connection terminal 20 is fixed so that θ2 = 90 degrees as shown by the imaginary line in FIG.
Since the elastic restoring force generated at the connection portion 23 presses the contact portion 22 onto the electric circuit 11, the connection terminal 20 reliably contacts the electric circuit 11. Further, as shown in FIG. 6, the contact portion 22 of the connection terminal 20 is connected to the lower end surface 3 of the connector housing 30.
4 is pressed onto the electric circuit 11 so that the contact portion 2
2 surely adheres to the electric circuit 11.

When the connector housing 30 is gripped by hand and rotated around the axis of the connector mounting hole 12, the contact portion 22 of the connection terminal 20 slides on the electric circuit 11. At this time, as shown in FIG. 6, the contact portion 22 of the connection terminal 20 is curved in the sliding direction, that is, in the circumferential direction around the axis, and its convex surface 22a is
Slide on top. Thereby, the contact portion 22 of the connection terminal 20
Does not shave the electric circuit 11 even if it slides on the electric circuit 11.

As described above, the connector 100 for a circuit board according to the present embodiment is mounted in the connector mounting hole 12 penetrating through the circuit board 10. The circuit board 10 is not deformed at the time of attachment. Also, the circuit board 1
The fixing member 40 is inserted into the connector mounting hole 12 pierced through the circuit board 10, that is, displaced in a direction perpendicular to the surface of the circuit board 10 so as to be mounted on the circuit board 10. Thus, the connection terminal 20 does not shave the electric circuit 11 because it does not slide on the surface of the circuit board.

Further, since the contact portion 22 of the connection terminal 20 is elastically pressed onto the electric circuit 11 to electrically connect the two, the electric circuit 11 and the connection terminal 20 can be reliably brought into contact. . Further, the contact portion 22 of the connection terminal 20 is curved in the sliding direction, and the convex surface 2
2a is in contact with the electric circuit 11, so that the connecting terminal 20 slides on the electric circuit 11 when the fixing member 40 is engaged with the circuit board 10, even if the connecting terminal 20 slides on the electric circuit 11.
I won't cut one.

It is needless to say that the circuit board connector of the present invention is not limited to the above embodiment, but can be applied to other forms. For example, in the above-described embodiment, a pair of engaging protrusions 43 protruding from a fixing member 40 engaging with the back surface 15 of the circuit board 10 is used as fixing means for fixing the connector housing 30 to the circuit board 10. ing. However, for example, the fixing means may be a plurality of flexible locking legs extending into the connector mounting hole 12 and engaging with the back surface 15 of the circuit board 10.
Also, known mechanical fixing means such as a clip and a screw can be used.

[0027]

As described above, in the circuit board connector according to the present invention, the connection formed from the conductive metal plate which comes into contact with the electric circuit disposed around the connector mounting hole penetrating through the circuit board. A terminal, a connector housing for holding the connection terminal, and fixing means inserted into the connector mounting hole to engage with the circuit board and fix the connector housing to the circuit board, wherein the connection terminal is held by the connector housing. A contact portion that contacts the electric circuit;
An elastically deformable connecting portion that connects the holding portion and the contact portion. Further, the contact portion is curved in a direction in which the contact portion slides on the circuit board, and the surface on the convex side contacts the electric circuit. That is, the curved contact portion of the connection terminal is formed so as to be elastically deformable, and presses the contact portion onto the electric circuit when the connector housing is fixed to the circuit board. Further, the connector housing is formed in a cylindrical shape and holds a holding portion of the connection terminal therein. Further, the fixing means is inserted through the notch connected to the connector mounting hole to the back side of the circuit board, and rotates around the axis of the connector mounting hole to engage with the back side of the circuit board. It is a projection.

Therefore, since the connector is mounted in the connector mounting hole penetrating through the circuit board, the circuit board is not deformed at the time of mounting. Further, since the fixing means is mounted on the circuit board by inserting the fixing means into the connector mounting hole penetrating through the circuit board, the connection terminals do not slide on the electric circuit to cut the electric circuit. . Further, since the contact portion of the connection terminal is elastically pressed onto the electric circuit to electrically connect the two, the electric circuit and the connection terminal can be reliably contacted. In addition, since the contact portion of the connection terminal is curved in the sliding direction and the convex surface of the connection terminal comes into contact with the electric circuit, the engagement of the fixing means with the circuit board requires the connection terminal to be on the electric circuit. Even when sliding, the connection terminal does not scrape the electric circuit. Therefore, the circuit board can be mounted without being deformed, and the electric circuit formed on the circuit board is not cut by the connection terminal, so that a highly reliable circuit board connector can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of a circuit board connector according to the present invention.

FIG. 2 is an enlarged perspective view showing a main part of the circuit board connector shown in FIG.

FIG. 3 is an exploded perspective view of the circuit board connector shown in FIG. 1;

FIG. 4 is a vertical sectional view of the circuit board connector shown in FIG. 2;

FIG. 5 is a partially enlarged side view showing a contact portion and a connection portion shown in FIG. 3;

FIG. 6 is a partially enlarged front view showing a contact portion shown in FIG. 5;

FIG. 7 is a perspective view showing a conventional circuit board connector together with a circuit board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Circuit board 11 Electric circuit 12 Connector mounting hole 13 Through hole 14 Notch 15 Back surface 20 Connection terminal 21 Holding part 22 Contact part 23 Connection part 30 Connector housing 31 Main body part 32 Upper bottom part 33 Electric wire taking-out hole 40 Fixing means (fixing member) 41 Insertion part 42 Large diameter part 43 Engagement projection 44 Engagement concave part 100 Circuit board connector

Claims (5)

[Claims] 1. A connector for connecting an electric wire to an electric circuit formed on a surface of a circuit board, wherein said connector is arranged in contact with said electric circuit disposed around a connector mounting hole penetrating through said circuit board. A connection terminal formed from a metal plate of
A connector housing that holds the connection terminal; and a fixing unit that is inserted into the connector mounting hole and engages with the circuit board to fix the connector housing to the circuit board. A connector for a circuit board, comprising: a holding portion held by a housing; a contact portion that contacts the electric circuit; and an elastically deformable connection portion that connects the holding portion and the contact portion. . 2. The circuit board connector according to claim 1, wherein said contact portion is curved in a direction in which said contact portion slides on said circuit board, and a convex surface thereof contacts said electric circuit. 3. The connector according to claim 2, wherein the curved contact portion of the connection terminal is formed to be elastically deformable, and presses the contact portion onto the electric circuit when the connector housing is fixed to the circuit board. The connector for a circuit board according to claim 2, wherein 4. The connector for a circuit board according to claim 1, wherein said connector housing is formed in a cylindrical shape and holds a holding portion of said connection terminal therein. . 5. The circuit according to claim 1, wherein the fixing means is inserted into a back surface of the circuit board through a notch provided in the connector mounting hole, and is rotated about an axis of the connector mounting hole. The circuit board connector according to any one of claims 1 to 4, wherein the connector is an engagement projection that engages with a back surface of the board.