JP3285177B2 - Connector pin connection device and method of assembling the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector pin connecting apparatus for fixing a circuit board to a case having a connector section and electrically connecting a connector pin and a contact conductor on the circuit board, and an assembling method thereof.

[0002]

2. Description of the Related Art FIG. 4 shows an example of a conventional structure for mounting a circuit board on a case. The case 1 includes a connector housing 10 made of a resin-molded block and connector pins 12 fixed to the connector housing 10, and the case 1 is fixed to a circuit board 2. Connector pin 1
2 is wire-bonded to the contact conductor 3 on the circuit board 2.

FIG. 5 shows another example of a conventional structure for attaching a connector to a circuit board. In this example, both ends of the lead wire 15 are individually welded to the contact conductor 3 and the connector pins 12 instead of the wire bonding of FIG. FIG. 6 shows another example of a conventional structure in which a circuit board is attached to a case. In this example, instead of the wire bonding of FIG.
By using the bending elasticity of the connector pin 12,
Is pressed against the contact conductor 3.

In Japanese Utility Model Laid-Open No. 5-82078, one end of a coil spring is welded to a contact conductor (the contact conductor) on a circuit board, and a rod-shaped connector pin is pushed into the coil spring from above. It is proposed to make an electrical connection.

[0005]

However, the above-described connection method shown in FIGS. 4 and 5 requires wire bonding or welding (including brazing and soldering), so that the process is complicated and the processing cost is increased. . Further, in the connection method of FIG. 6, since the flat surface of the connector pin is simply brought close to the flat surface of the contact conductor and pressed,
There has been a problem that the contact resistance between the connector pin and the contact conductor cannot be sufficiently reduced due to the presence of an oxide film or minute irregularities in these contact portions. Further, if the bending elasticity of the connector pin is increased to reduce the contact resistance, there is a possibility that the adhesion between the connector housing 10 and the circuit board 2 may be peeled off at, for example, a point A.

On the other hand, in the connection method using a coil spring disclosed in the above-mentioned publication, the coil spring has a special shape, and is automatically mounted on a board in a normal component mounting machine in which components are attracted and arranged at predetermined positions on a circuit board. The problem has arisen that the arrangement of a large number of coil springs must be done manually or a special dedicated mounting system has to be devised. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a connector pin connection device which is simple in process and capable of sufficiently reducing contact resistance, and an assembling method thereof.

[0007]

According to a first aspect of the present invention, there is provided a connector pin connection device comprising: a main body housing;
A circuit board support base fixed in place in the housing
And the main body attached to a predetermined position of the base.
A circuit board facing the housing, and the main body housing
The one end is fixed to the circuit from the main body housing.
A connector pin protruding toward the circuit board ;
At the position facing the one end of the circuit board.
And a contact conductor portion of which is disposed on a surface conductive, the connector
The one end of the connector pin approaches the contact conductor.
And deforms to a posture along the surface of the contact conductor.
A plurality of end portions of which are pressed against the surface of the contact conductor portion
It has a leg, at least one of the legs, is characterized in that it is 押曲 in a direction different from the other of said legs.

[0008] A second structure of the present invention is the above-mentioned main housing.
And the base closely contact the leg and the contact conductor.
It is characterized by closing . Method of assembling a connector pin connecting device of the present invention, the connector pin having a plurality of legs providing a circuit board having a contact conductor portion of the electrically conductive body housing and the main surface is fixed to one end, the contact conductor portion
The circuit board while pressing the legs by the main body c.
By approaching the housing, the tip of the leg is pressed against the contact conductor in a posture in which the shaft of the connector pin is substantially perpendicular to the surface of the contact conductor, and each leg is pressed by the bending. While pressing and bending along the surface of the contact conductor, the tip of at least one leg is bent in a direction different from the tip of the other leg, and the tip of the leg is bent .
The circuit board is fixed to the main body housing while being kept pressed against the surface of the contact conductor .

[0009]

According to the first and second constructions of the connector pin connection device of the present invention, at least one of the plurality of legs formed at the tip of the connector pin toward the circuit board is connected to the other. Since it is pressed against the contact conductor in a state where it is bent in a direction different from that of the leg, the connector pin can be brought into contact with the contact conductor while increasing the contact area in a stable posture, reducing contact resistance Can be. Further, since the leg is pressed by the contact conductor due to the bending elasticity of the leg, the contact resistance can be reduced. Further, since the assembling method described later can be adopted, the above-mentioned and effects described below can be realized by a simple assembling method.

According to the method of assembling the connector pin connection device of the present invention, the plurality of legs formed at one end of the connector pin are positioned so that the shaft of the connector pin is substantially perpendicular to the surface of the contact conductor. By pressing against the contact conductor of the circuit board, each leg is pressed and bent along the surface of the contact conductor,
At least one leg is bent in a direction different from that of the other legs, and the circuit board is fixed to the main body housing while maintaining the bent state of the legs. Can be.

Further, when the leg portion extends along the surface of the contact conductor portion while bending, the leg portion scrapes the surface of the contact conductor portion to destroy an oxide film and deforms minute surface irregularities to form the contact conductor portion. While being in close contact with each other, it is pushed out along the surface of the contact conductor portion, and as a result, the circuit board is relatively displaced in a direction substantially perpendicular to the main surface of the connector housing, thereby lowering the connection between the connector pin and the contact conductor portion. The electrical connection by the contact resistance and the fixing between the circuit board and the connector housing can be easily performed with one touch.

[0012]

FIG. 1 is a longitudinal sectional view showing an example of a connector pin connecting device and an assembling method of the present invention, and FIG. 2 is a schematic enlarged side view of a main part showing an inner end of a connector pin 12 before deformation. FIG. 3 is a schematic enlarged side view of a main part showing a state after deformation of an inner end portion of the connector pin 12.

Reference numeral 1 denotes a case (main body housing) having a lower end opening formed by resin molding.
The right end part is a connector housing (connector part) 10. The connector housing 10 has a recess 11 at the right end opening.
One end of the plurality of connector pins 12 protrudes from the recess 11. The central portion of each connector pin 12 is fixed to the side wall of the case 1, and each connector pin 12
Has an inner end protruding into the case. Connector pin 1
Numeral 2 is made of an elongated flat copper plate.
1 protrudes rightward in FIG. 1, and the inner end of the connector pin 12 protrudes downward in FIG. The inner end of the connector pin 12 has a base 121 projecting downward in the drawing.
And a pair of legs 122 and 123 that are bifurcated and bent in opposite directions from the distal end of the base 121. The distal ends of the legs 122 and 123 are connected to the contact conductor 3 on the circuit board 2 described later. It is bent substantially horizontally along the surface of.

The lower end opening of the case 1 is closed by a base 13 made of an aluminum flat plate to form a closed space therein. More specifically, the periphery of the base 13 is bonded to the periphery of the case 1 surrounding the lower end opening. The circuit board 2 is adhered to the upper surface of the base 13, and a large number of electronic circuit elements (not shown) are provided on the circuit board 2.
Are mounted and wired. A contact conductor (so-called contact conductor) is provided on the upper surface of the right end of the circuit board 2.
3 are printed, and the contact conductor 3 is a connector pin 12
Are electrically connected to the leg portions 122 and 123.

Next, a method of assembling the connector pin connection device will be described. Before pressing the circuit board 2 against the case 1,
As shown in FIG. 2, the inner ends of the connector pins 12 have both legs 122, 123 not spread so much, and the tips of the legs 122, 123 are obliquely in contact with the surface of the contact conductor 3. . When the case 1 is moved toward the circuit board 2 and relatively close to the main surface of the circuit board 2 at a substantially right angle in a state where the tips of the two legs 122 and 123 are in contact with the surface of the contact conductor portion 3, 122 and 123 are bent in opposite directions while being pressed against the surface of the contact conductor portion 3 while shaving the surface of the contact conductor portion 3. As a result, as shown in FIG. Pressed.

At this time, the oxide film on the surface of the contact conductor 3 is removed by the two legs 122 and 123, particularly the tips thereof, which move while being in contact with the contact conductor 3, and the minute irregularities on the surface are effectively reduced. Will be shaved. In addition, both legs 12
Since the components 2 and 123 are bent in directions opposite to each other, a component of the bending stress of both components parallel to the surface of the contact conductor portion 3 is canceled, and the assembly can be completed while the base portion 121 maintains a stable posture.

The bending of the two legs 122 and 123 may be either elastic deformation or plastic deformation, but preferably has at least elastic deformation. Thereafter, the base 13 is set at a predetermined position of the case 1 shown in FIG. 1 and adhered to each other to complete the assembly. The connector pin connection device of the present embodiment described above has an excellent effect that the connection is simple and the contact resistance can be reduced by the destruction of the oxide film on the surface of the contact conductor portion 3 and the increase of the contact area.

In this embodiment, the distal end of the connector pin 12 has a bifurcated shape. However, the connector pin 12 may be divided into three or more.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a connector pin connection device of the present invention.

FIG. 2 is a schematic enlarged side view of an inner end portion of a connector pin 12 of FIG. 1 before deformation.

FIG. 3 is a schematic enlarged side view of an inner end portion after deformation of a connector pin 12 of FIG. 1;

FIG. 4 is a longitudinal sectional view showing a conventional connector pin connection device.

FIG. 5 is a longitudinal sectional view showing a conventional connector pin connection device.

FIG. 6 is a longitudinal sectional view showing a conventional connector pin connection device.

[Explanation of symbols]

1 is a case (body housing), 10 is a connector housing, 2 is a circuit board, 3 is a contact conductor, 12 is a connector pin, and 122 and 123 are legs of the connector pin.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-54-27981 (JP, A) JP-A-4-163864 (JP, A) JP-A-2-192677 (JP, A) 117064 (JP, U) Japanese Utility Model Showa 56-37275 (JP, U) Japanese Utility Model Showa 51-80644 (JP, U) Japanese Utility Model Showa 50-1861 (JP, U) (58) Field surveyed (Int. ⁷ , DB name) H01R 4/26-12/04

Claims (3)

(57) [Claims] 1. A main body housing, and a circuit board support fixed to a predetermined position of the main body housing.
A holding base, and the main body housing attached to a predetermined position of the base.
A circuit board facing the housing and one end of the circuit board fixed to the housing.
A connector pin protruding from the jing toward the circuit board, and the connector pin at a position facing the one end of the connector pin.
A conductive contact conductor disposed on a main surface of the circuit board, wherein the one end of the connector pin is close to the contact conductor.
As the contact conductor part is deformed to a position along the surface of the contact conductor part.
And the tip is pressed against the surface of the contact conductor.
A plurality of legs, wherein at least one of the legs is bent in a direction different from that of the other legs. 2. The apparatus according to claim 2, wherein said main body housing and said base are arranged in a front.
The connector pin connection device according to claim 1, wherein the leg portion and the contact conductor portion are sealed . 3. A main body housing to which a connector pin having a plurality of legs at one end is fixed, and a circuit board having a conductive contact conductor on a main surface are provided, and the legs are bent by the contact conductor. The circuit board
By bringing the plate closer to the main body housing, the tip of the leg portion is pressed against the contact conductor portion in a posture where the shaft portion of the connector pin is substantially perpendicular to the surface of the contact conductor portion. While bending each leg along the surface of the contact conductor, bending the tip of at least one of the legs in a direction different from the tip of the other leg, and bending the tip of the leg. A method for assembling a connector pin connection device, wherein the circuit board is fixed to the main body housing while maintaining a state of being pressed against the surface of the contact conductor portion .