JPH08647Y2 - Optical connector plug - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an optical connector plug,
In particular, the present invention relates to an optical connector plug that can displace the connector insertion direction and the cable lead-out direction to reduce the arrangement space for devices to be connected. [Prior Art] Conventionally, it is generally known that an optical fiber cable is used for transmission of a digital electric signal. For example, when connecting a digital output such as a CD player or DAT to a D / A converter, the digital electrical signal is first converted into an optical pulse and transmitted by an optical fiber cable instead of using a coaxial cable. Methods for preventing signal degradation are commonly used. As the method of using the optical fiber cable, optical connector plugs are provided at both ends of the optical fiber cable, and an optical connector socket is provided on a device to be connected so that the optical fiber cable can be fitted freely. A light emitting portion or a light receiving portion is arranged corresponding to the tip portion of the fiber cable. It is also known that the optical connector plug and the optical connector socket are electrically connected to each other and a photoelectric conversion portion is provided in the optical connector plug. The above-mentioned optical connector socket with a light receiving portion or a light receiving portion disposed therein emits / receives light by facing the tip of the optical fiber cable of the inserted optical connector plug.
The optical connector socket, the optical connector plug, and the optical fiber cable held by the plug are arranged in a straight line.
Therefore, the connector plug and the optical fiber cable connected to the optical connector socket provided on the back surface of the device project rearward, and a considerable wiring space is required behind the device.
Further, the optical connector plug provided with the photoelectric conversion portion has the same arrangement, and the protrusion amount from the optical connector socket is further increased. [Problems to be Solved by the Invention] When the above-mentioned conventional optical connector plug is connected to an optical connector socket of an electronic device, the amount of protrusion to the rear of the device is large, and the optical fiber cable is more than an ordinary electric wire. Since the flexibility is low, the wiring space behind the device is large, which may cause difficulty in the arrangement. Therefore, an optical connector plug that can shift the insertion direction of the optical connector plug and the extraction direction of the optical fiber cable so that the space occupied by the optical connector plug and the optical fiber cable behind the device is as small as possible is practical. It is disclosed in Japanese Unexamined Patent Publication No. 56-121270. However, the optical connector plug described in the publication is unstable in the winding state of the optical cable and the mounting state of the photoelectric conversion element, and therefore, the optical connector plug should be opposed to the tip end portion of the optical cable with a certain distance. The relative positional relationship with the disposed photoelectric conversion element is also unstable, and since the plug section and the photoelectric conversion section are separate components, the optical connector plug itself must be large. . So, make the optical connector plug as small as possible,
The present invention has a technical problem to be solved in order to enable easy and stable mounting, and the present invention aims to solve the problem.

[Means for Solving the Problems]

The present invention has been proposed in order to achieve the above-mentioned object, and an optical connector plug in which a photoelectric conversion unit is built in the connector plug and the photoelectrically converted optical signal is transmitted by an optical fiber cable has a disc shape. The contact pin is fixed to the plug mold by penetrating it back and forth, and the other end face of the substrate on which the photoelectric conversion element of the photoelectric conversion unit is arranged is abutted on the protruding portion of the contact pin on the back side, and , The contact pin and the circuit of the board are connected by soldering to form an assembly of the board and the plug mold,
Insert the assembly into a shielded pipe to assemble it, and
An optical connector plug is provided in which a ferrule having optical fiber cables assembled between side plates projecting at right angles on both rear sides of the shield pipe is assembled and fixed so as to face a photoelectric conversion element on the substrate. is there.

[Action]

In this invention, a contact pin is passed through and fixed to a disc-shaped plug mold, and further, a photoelectric conversion element of a photoelectric conversion unit is disposed on one end face of one substrate, and the substrate is fixed. The other end face of the contact pin is brought into contact with the back side of the contact pin to connect the contact pin and the circuit of the substrate by soldering to form an assembly of the substrate and the plug mold. Therefore, the assembly is stable. Therefore, the assembly is inserted into a shield pipe and assembled, and further, a ferrule having an optical fiber cable assembled between side plates projecting at right angles to the rear side of the shield pipe is mounted on the substrate. Since the optical fiber cable is assembled and fixed so as to face the photoelectric conversion element, the optical fiber cable is also stably fixed, and the relative positional relationship with the photoelectric conversion element is also stable. Thus, according to the present invention, it is possible to easily assemble the optical fiber and the contact pin in the direction perpendicular to each other by using one substrate as a relay, and it is possible to make the configuration extremely small. [Embodiment] Hereinafter, the present invention will be described in detail with reference to the attached drawings. 1A to 1C are optical connector plugs (1) and (2).
1 shows an optical fiber cable (3) having both ends fixed. The optical connector plugs (1) and (2) have the same outer shape, but the optical connector plug (1) is a transmission side that incorporates a photoelectric conversion unit that converts a digital electric signal into an optical pulse. (2) is equipped with a photoelectric conversion unit that receives the optical pulse transmitted by the optical fiber cable (3), re-converts it into a digital electric signal, and sends it to the connected optical connector socket (not shown). It is the receiving side. The optical connector plugs (1) and (2) draw out the optical fiber cable (3) at right angles to the insertion direction into the optical connector socket, and the amount of protrusion from the optical connector socket is made as small as possible. As will be described below, the optical connector plugs (1) and (2) include a disk-shaped plug mold (4), a shield pipe (5), a photoelectric conversion unit, a ferrule for locking an optical fiber cable, and the like. . As shown in FIG. 2, the plug mold (4) has contact pins (6) and (6).
(6) Fix (6) by penetrating it forward and backward, inserting the substrate (8) of the photoelectric conversion part (7) between the contact pin protrusions on the back side, and connecting the circuit (not shown) by soldering are doing. LE is used as a light emitting element at a predetermined position on the substrate (8).
D, or a photoelectric conversion element (9) such as a photodiode is arranged as a light receiving element, and contact pins (6) (6) (6)
It is formed so as to input or output a driving power source and a signal through (6) to form an assembly of a substrate and a plug mold. As shown in FIG. 3, the base plate (8) is provided with widened portions (10) and (10) at the rear portion (left side in the figure), so that the shield pipe (5) shown in FIG. If the photoelectric conversion part (7) to which the mold (4) is connected is inserted from the rear, the cutout part (1) provided at the rear edge part of the shield pipe (5)
1) (11) and the widened parts (10) (10) of the substrate (8) are engaged with each other, and the plug mold (4) and photoelectric conversion part (7)
The optical connector plug (1) has a position regulation to the front of the
The plug mold (4) does not fall off when the (2) is removed from the optical connector socket. As shown in FIGS. 4 (A) and 4 (B), the shield pipe (5) is provided with side plates (12) and (13) by extending the left and right sides of the rear part downward in the figure, and the light shown in FIG. The ferrule (14) attached to the tip of the fiber cable (3) is sandwiched between the side plates (12) and (13). At this time, the protrusions (15) (15) provided on both sides of the ferrule (14) are attached to the side plate (1).
2) Engages in holes (16) and (16) opened in (13) to prevent them from coming off, and at the same time, the photoelectric conversion element (9) of the photoelectric conversion section (7) and the fiber tip portion of the optical fiber cable (3) ( Precisely specify the position with 3a). Further, a ridge (17) projecting in the inner circumferential direction is provided at the front portion of the shield pipe (5) by press working, and as shown in FIG. 1 (A), the shield pipe (5) on the transmission side is provided. One, shield pipe (5a) on the receiving side
Two ridges (17) (17) are provided on the to prevent erroneous insertion. Therefore, it is not necessary to make the plug molds (4) (4) different between the transmitting side and the receiving side to prevent erroneous insertion, and a common plug mold is used. Then, as shown in FIGS. 6A and 6B, the optical connector sockets (18) and (19) are connected to the shield pipe (5).
Since it is only necessary to manufacture two types of plug molds (23) (24) having key grooves (20) (21) (21) corresponding to the number of protrusions of (5a), there are a total of three types of plug molds. There is. Plug mold (4) held by the shield pipes (5) (5a), photoelectric conversion part (7), and ferrule (14)
The plug holder (25) to be mounted on and is formed by dividing the left and right into two as shown in FIGS. 7 (A) and (B), and is provided on the left part (26) of FIG. 7 (A). The claws (27) (27) ... Are engaged and fitted to the locking portions (29) (29) ... of the right part (28) of FIG. The lock hinge (30) provided on the side surface of the right part (28) is provided with a lock claw (31) at the tip as shown in FIG. 1 (C), and the optical connector socket (18) of FIG. 6 is provided. The optical connector plugs (1) and (2) are securely connected to the optical connector sockets (18) and (19) by engaging with the locking portions (32) and (32) provided on the upper surface of the (19). At the time of removal, if the lower part (33) of the lock hinge (30) shown in FIG. 1 (C) is pressed, the lock hinge (30) swings around the central part as a fulcrum, and the lock claw (31) is inserted into the optical connector socket (31). The optical connector plug (1) is disengaged from the engagement part (32) of 19).
(2) can be pulled out. Assembling of the optical connector plugs (1) and (2) is performed by plug mold (4) and photoelectric conversion part (7) as shown in FIG. 4 (A), and the ferrule (3) inserted into the optical fiber cable (3). 14) and are fixed to a shield pipe (5) (5a), and either of the left and right parts (26) (28) of the plug holder (25) is attached to the shield pipe (5) (5a). And the notches (34) (34), (34) (34) for positioning provided in the lower part of the side plates (12) (13), and the ferrule (14).
The stopper groove (35) (35) is aligned with the stopper groove (35) and the stopper (36) shown in FIG. 8 is inserted to prevent the ferrule (14) from being vertically displaced. Next, when the other of the left and right parts (26) (28) of the plug holder (25) is mounted and pressure-contacted, the left and right parts (26) (28) are fitted and the optical connector plugs (1) (2)
Is completed. It should be noted that this invention can be modified in various ways without departing from the spirit of this invention, and it goes without saying that this invention extends to the modified version. [Effects of the Invention] As described in detail in the above-described one embodiment, the present invention fixes a contact pin by penetrating and fixing it to a disk-shaped plug mold.
Then, one end face of one substrate is brought into contact with the back side of the contact pin, and further, the photoelectric conversion element of the photoelectric conversion unit is arranged on the other end face of the substrate and soldered to the contact pin. Since the assembly of the substrate and the plug mold is formed by the connection, the assembly is stably inserted and assembled in the shield pipe by the disc-shaped plug mold. Further, since a ferrule having an optical fiber assembled between the side plates protruding in a direction perpendicular to the rear both sides of the shield pipe is assembled, the photoelectric conversion element on the substrate and the tip of the optical fiber are arranged at a predetermined interval. It can be stably assembled facing each other. As described above, the present invention makes it possible to easily assemble the optical fiber and the plug in the direction perpendicular to each other by using one substrate as a relay, and to make the configuration extremely small.
It is a device that has a truly remarkable effect.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG. 1 (A) is a front view of an optical fiber cable with an optical connector plug attached.
FIG. 1B is a plan view of the same, FIG. 1C is a side view of the same, FIG. 2 is a side view of a plug mold to which a photoelectric conversion part is connected, and FIG.
FIG. 4 is a plan view of the substrate of the photoelectric conversion part, FIG. 4 (A) is a plan view of the shield pipe, FIG. 4 (B) is a front view of the same, and FIG. 5 is a plan view of a ferrule to which an optical fiber cable is fixed. FIG. 6 (A) is a front view of the transmitter optical connector socket, FIG.
Figure (B) is a front view of the receiving side optical connector socket, Figure 7 (A) is a front view of the left part of the plug holder, and Figure 7 (B).
Is a partially cutaway front view of the same right component, and FIG. 8 is a plan view of the stopper. (1) (2) …… Optical connector plug (3) …… Optical fiber cable (6) …… Contact pin, (7) …… Photoelectric conversion part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04B 10/13 10/135 10/14

Claims (1)

[Scope of utility model registration request] 1. An optical connector plug in which a photoelectric conversion portion is built in a connector plug and which transmits an optical signal photoelectrically converted by an optical fiber cable, in which a contact pin is pierced forward and backward in a disk-shaped plug mold and fixed. , The other end face of the substrate having the photoelectric conversion element of the photoelectric conversion unit disposed on one end face is brought into contact with the protruding portion of the contact pin on the back side, and the contact pin and the circuit of the substrate are soldered. Connected to form a board and plug mold assembly, insert the assembly into a shield pipe and assemble,
Further, a ferrule having an optical fiber cable assembled between side plates protruding in a right angle direction on both rear sides of the shield pipe is assembled and fixed facing the photoelectric conversion element on the substrate. Connector plug.