JPH06203896A - Pin structure for connector - Google Patents

Abstract

PURPOSE:To prevent the separation of a pattern even when a connector is soldered to a substrate in a condition where the connector is slightly floating from the surface of the substrate, by forming circular-arc-shaped stress absorbing parts on the bent positions of pins bent and formed in a nearly-L-shaped. CONSTITUTION:Plural pins 3 and 4 are built in a connector main body 1, the one-side tip part 5 of a pin 3 and also the one-side tip part 6 of a pin 4 are made bending in a nearly U-shape, and circular-arc-state stress absorbing parts 7 and 8 are formed on the bent positions of the pins 3 and 4. In a case where the pins 3 and 4 are soldered to the pattern of a substrate 2 in a condition where the main body 1 is floating from the substrate 2, when a screw is passed through the screw insertion hole of the substrate 2 to fasten the main body 1 on the substrate 2, force is added to the pins 3 and 4. Consequently, the parts 7 and 8 are easily deformed, and unnatural force is not added to parts where tip parts 11 and 12 are fixed, thus the separation of the pattern on the substrate 2 at parts where the parts 11 and 12 of the pins 3 and 4 and the substrate 2 are soldered to be fixed can be prevented.

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 connector pin, and more particularly to a connecting portion between a connector pin and a pattern formed on the circuit board when the connector body is fixed on the circuit board. The present invention relates to the structure of a pin of a connector that can absorb the generated stress.

[0002]

2. Description of the Related Art FIG. 4 is a sectional view showing the structure of a conventional connector, in which 30 is a connector body and 31 is a circuit board to which the connector body 30 is fixed.

A plurality of substantially L-shaped pins 32 and 33 are incorporated in the connector body 30. One tip portion 34 of the pin 32 is bent into a substantially U shape, and the pin 33 is similarly bent.
One of the tip portions 35 is also bent into a substantially U shape.
The pin 32 is bent at a bending position 36, and the pin 33 is bent at a bending position 37 at about 90 degrees.

Reference numeral 38 is a fixing plate for fixing the other end portions 39, 40 of the plurality of pins 32, 33. Pin 32
The other tip portion 39 is inserted into the through hole of the substrate 31 and soldered to the pattern formed on the surface of the substrate 31 from the back side of the substrate 31 with the solder 41. The other tip 40 of the pin 33 is also the same.

FIG. 5 is a perspective view of the connector shown in the sectional view of FIG. And 43 and 44 are the connector main body 30.
Is a hole for fixing it on the substrate 31 with a screw, and a screw insertion hole (not shown) is also formed at a position of the substrate 31 that matches the holes 43 and 44. And these holes 4
Screws are passed through the screw insertion holes of 3, 44 and the substrate 31, and the connector body 30 is fixed on the substrate 31 by the screws.

[0006]

The structure of the pin of the above-mentioned conventional connector has the following problems. That is, when the connector body 30 is attached to the substrate 31, the tip portions 39, 4 of the pins 32, 33 are mounted as shown in FIG.
0 is inserted into the through hole of the board 31, and soldering is performed from the back side of the board 31 to the pattern formed on the back surface of the board 31. In this case, the connector body 30 may be soldered in a state of being in close contact with the surface of the substrate 31, but it may be soldered in a state of being slightly floating from the surface of the substrate 31.

In this state, the connector body 30 is attached to the substrate 31.
When the screws 32 are screwed on and tightened, stress is applied to the tips 39 and 40 of the pins 32 and 33, and the pattern formed on the back surface of the substrate 31 is separated from the substrate 31.

An object of the present invention is to prevent the pattern from being peeled off from the board even when the connector pins are soldered to the board in a state where the connector is slightly floating from the surface of the board and the connector is fixed in this state. It is to provide a structure of a pin of a connector which can be prevented.

[0009]

According to the structure of a connector pin according to the present invention, a connecting pin of a connector assembled to a circuit board is bent into a substantially L shape, and an arc-shaped stress absorbing portion is formed at the bent position. It is characterized by having done.

[0010]

In the present invention, since the arc-shaped stress absorbing portion is provided at the bending position of the pin bent in a substantially L-shape, when the force in the direction perpendicular to the circuit board is applied to the pin, the stress absorbing portion is formed. Deforms to absorb the force and reduce the stress generated in the soldering portion between the pin of the connector and the board, thereby preventing the pattern from peeling from the board.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing the structure of the connector of the present embodiment, where 1 is a connector body and 2 is a connector body 1.
Is a circuit board to which is fixed.

The connector body 1 has a plurality of pins 3 and 4 incorporated therein. One tip portion 5 of the pin 3 is bent into a substantially U shape, and similarly, one tip portion 6 of the pin 4 is also bent into a substantially U shape. An arc-shaped stress absorbing portion 7 is formed at a bending position where the pin 3 is bent at about 90 degrees. Similarly, an arc-shaped stress absorbing portion 8 is also formed at the bent position of the pin 4.

Reference numeral 9 is the other tip portion 1 of the plurality of pins 3 and 4.
It is a fixing plate for fixing 1 and 12. The other tip portion 11 of the pin 3 is soldered to the pattern formed on the back surface of the substrate 2 with solder 13 from the back side of the substrate 2 while being inserted into the through hole of the substrate 2. Similarly, the other tip portion 12 of the pin 4 is also soldered from the back side of the board 2 to the pattern formed on the back surface of the board 2 by the solder 14.

FIG. 2 is a perspective view of the connector shown in the sectional view of FIG. Reference numerals 15 and 16 are holes for fixing the connector body 1 on the substrate 2 with screws.
Screw insertion holes (not shown) are also formed in the positions of the substrate 2 that match the positions 5 and 16. And these holes 15,
Screws are passed through the screw insertion holes 16 and the board 2 to fix the connector body 1 on the board 2.

FIG. 3 is an explanatory view for explaining the action of the stress absorbing portions 7 and 8 in the pins 3 and 4. When the connector body 1 is floating from the substrate 2 and the pins 3 and 4 are soldered to the pattern of the substrate 2,
When a screw is passed through the holes 15 and 16 shown in FIG. 3 and the screw insertion hole of the board 2 and the connector body 1 is squeezed on the board 2, the connector body 1 is pressed in the arrow X direction shown in FIG.
Since the tip portions 11 and 12 of the pins 3 and 4 are fixed to the substrate 2 by soldering, a force in the arrow Y direction is applied to the pins 3 and 4 as a reaction, and this force causes the pins 3 and 4 to move.
The stress absorbing parts 7 and 8 of 4 are easily deformed as shown by the broken line.

As a result, the tips 11, 12 of the pins 3, 4 are
Unreasonable force in the direction of arrow X is not applied to the portion where is fixed, and the tip portions 11 and 12 of the pins 3 and 4 and the substrate 2 are soldered and fixed on the substrate. Peeling of the pattern can be prevented.

[0017]

As described above, according to the present invention, since the arc-shaped stress absorbing portion is provided at the substantially L-shaped bending position of the connector pin, the pin is fixed by the deformation of the stress absorbing portion. The stress generated in the part where
There is an effect that the peeling of the pattern due to the stress generated at the connecting portion between the pin and the substrate can be prevented.

[Brief description of drawings]

FIG. 1 is a sectional view of a connector according to an embodiment of the present invention.

FIG. 2 is a perspective view of a connector according to an embodiment of the present invention.

FIG. 3 is an explanatory view for explaining the action of the pin structure of the connector according to the embodiment of the present invention.

FIG. 4 is a sectional view of a conventional connector.

FIG. 5 is a perspective view of a conventional connector.

[Explanation of symbols]

 1 Connector body 2 Board 3, 4 pins 7, 8 Stress absorption part

Claims (1)

[Claims] 1. A pin structure of a connector, characterized in that a connecting pin of a connector assembled to a circuit board is bent into a substantially L shape, and an arc-shaped stress absorbing portion is formed at the bent position.