JPH05259484A - Photoelectric conversion device - Google Patents

Abstract

PURPOSE:To make a structure where a photoelectric conversion device can be mounted on a substrate at one touch with only a weak power, and the device is not easily removed with even a strong power, once it is mounted. CONSTITUTION:A pin 11b for mounting on a substrate, which is equipped with an part 11c to be engaged with the substrate at its nose, is firstly led out in parallel with the substrate surface from the upper side of a receptacle 11. Next, the pin 11b is curved vertically. A single photoelectric conversion device 12 is inserted into the receptacle 11, and a plug 13 is mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photoelectric conversion device serving as an optical signal transmitter or an optical signal receiver in an optical transmission system using an optical fiber, and more particularly to a photoelectric converter mounted on a circuit board for use. ..

[0002]

2. Description of the Related Art FIG. 4 is a perspective view of a receptacle used in a conventional photoelectric conversion device of this type. A single photoelectric conversion element is attached to the receptacle 41 from the lower surface in order to configure a photoelectric conversion device. Further, a plug holding an optical fiber is inserted into the plug coupling portion 41a provided on the front surface thereof.

Usually, the photoelectric conversion device is used by being fixed to a substrate. Therefore, the receptacle of this conventional example is integrally provided with a mounting pin 41b for engaging with the substrate. A locking portion 41c that engages with the substrate is provided at the tip of the mounting pin 41b. Therefore, if the mounting pin is once pushed into the opening of the board having the opening at the position corresponding to the mounting pin, the locking portion at the tip end is engaged with the board, so that the falling out is prevented.

[0004]

In the detachable photoelectric conversion device as described above, it can be mounted on the circuit board with a weak force, and does not drop off from the board even after a strong force is applied once it is mounted. Is desirable.

In the structure of the receptacle described above, the photoelectric conversion device is mounted on the substrate 44 by utilizing the bending of the mounting pin 41b due to the elasticity of the resin, as shown in FIG. When the stopper 41c engages with the substrate, the stopper 41c does not drop [(c) in FIG. 5].

Here, in order to make it difficult to remove the mounting pin, it is necessary to increase the height A [(a) of FIG. 5] of the locking portion. However, in the structure of the conventional example, since the length L [(a) of FIG. 5] to the locking portion of the locking pin is determined by the thickness of the mounting substrate, when the height A of the locking portion is increased. ,
Since the locking pin needs to be largely bent at the time of mounting, a large force is required, which makes it difficult to mount easily.

That is, in the structure of the conventional example, the ease of mounting on the substrate and the difficulty in removal after mounting are incompatible. Therefore, an object of the present invention is to provide a photoelectric conversion device that is easy to mount and does not easily drop off after mounting.

[0008]

A photoelectric conversion device according to the present invention includes a photoelectric conversion element pellet, a plurality of lead terminals electrically connected to the photoelectric conversion element pellet, and a plurality of the photoelectric conversion element pellets surrounding the photoelectric conversion element pellet. A photoelectric conversion element single body having a resin mold package holding a lead terminal, and a housing for accommodating the photoelectric conversion element single body, having a coupling portion with a plug holding an optical fiber optically coupled with the photoelectric conversion element pellet, And, including a receptacle having a mounting pin for engaging the mounting substrate, wherein the mounting pin is led out from the vicinity of the upper end of the receptacle in parallel with the mounting substrate surface, It is characterized in that it has a locking portion which is bent vertically to the mounting surface and which projects at a tip portion in a direction parallel to the mounting substrate surface.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view showing a state before assembling of the first embodiment of the present invention. The receptacle 11 is
A plug coupling portion 11a for receiving the plug 13 holding the optical fiber 13a is provided on the front surface, and mounting pins 11b are provided on both side surfaces. Further, the photoelectric conversion element unit 12 is mounted from the lower surface.

The mounting pin 11b is led out from the upper part of the side surface of the receptacle in parallel to the mounting substrate surface, then bent perpendicularly to the substrate surface, and reaches the back surface of the substrate. A locking portion 11c that engages with the back surface of the substrate is formed at the tip of the mounting pin 11b.

In the receptacle of this structure, the locking portion 11
Even if the height of c is increased, since the bending portion of the mounting pin is long, it can be flexed with a weak force and the mounting can be easily performed. Therefore, the height of the locking portion 11c can be set to a value that does not easily come off the mounting substrate.

Specifically, in order to prevent the mounting pin from coming off easily, the height A of the engaging portion is 2-3.
mm is required. However, since the length L of the pin is 2 to 3 mm in the conventional example, setting the height of the locking portion to the above value requires a strong force for mounting. However, in this embodiment, since the length L of the pin can be set to 10 to 15 mm, even if the height A of the locking portion is set to the above value to secure the stability after mounting, the mounting is performed in the conventional example. It can be easily executed with about 1/5 of the force.

FIG. 2 is a perspective view of a receptacle according to the second embodiment of the present invention. In the present embodiment, the mounting pin 21b
A recess 21d for holding the substrate is formed in the. Therefore, the stability after mounting is further enhanced. Also,
In this embodiment, a metal fixing pin 21e is planted on the lower surface of the receptacle 21. If necessary, this pin can be fixed to the mounting substrate by soldering.

FIG. 3 is a perspective view of a receptacle according to the third embodiment of the present invention. In this embodiment, two mounting pins 31b each having a surface perpendicular to the side surface are led out from each side surface. With this configuration, the positional stability in the left-right direction after mounting can be improved.

The preferred embodiment has been described above.
The present invention is not limited to these examples, and various modifications can be made. For example, in the embodiment, the pins are led out only from the left and right surfaces of the receptacle, but they can also be led out from the rear surface. However, when the pin is provided on the front side, it is desirable to lead it out from the bottom surface.

[0016]

As described above, according to the present invention, the pins for mounting the board are led out not from the bottom surface of the receptacle body but from the side surface thereof. The length of the bending portion of the mounting pin can be increased, and therefore, even if the height of the locking portion of the pin is increased, the mounting can be easily performed with a weak force. Therefore, according to the present invention, it is possible to achieve both ease of mounting and stability after mounting.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state before assembling of a first embodiment of the present invention.

FIG. 2 is a perspective view of a receptacle according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a receptacle according to a third embodiment of the present invention.

FIG. 4 is a perspective view of a conventional receptacle.

FIG. 5 is a diagram showing a state in which the conventional example is mounted on a substrate.

[Explanation of symbols]

 11, 21, 31, 41 Receptacles 11a, 41a Plug coupling portions 11b, 21b, 31b, 41b Mounting pins 11c, 21c, 31c, 41c Locking portions 21d Recesses 21e, 31e Fixing pins 12 Photoelectric conversion element single body 13 Plug 13a Optical fiber 44 substrate

Claims (1)

[Claims] 1. A photoelectric conversion device comprising: a photoelectric conversion element pellet; a plurality of lead terminals electrically connected to the photoelectric conversion element pellet; and a resin mold package that surrounds the photoelectric conversion element pellet and holds the plurality of lead terminals. For mounting a conversion element alone and a plug for accommodating the photoelectric conversion element alone and holding an optical fiber optically coupled to the photoelectric conversion element pellet, and for engaging with a mounting substrate. In a photoelectric conversion device comprising: a receptacle having a pin, the mounting pin is led out parallel to the mounting substrate surface from near the upper end portion of the receptacle, and then bent vertically to the mounting substrate surface, and a tip portion thereof is provided. The photoelectric conversion device is characterized in that it has a locking portion protruding in a direction parallel to the surface of the mounting substrate.