JP2019120936A - Fastening member and optical receptacle module - Google Patents

Abstract

To provide a fastening member capable of securely fastening an optical receptacle and an optical fiber connector with a more simple structure at a low cost, and an optical receptacle module fastened with the fastening member.SOLUTION: A fastening member 10 is detachably mounted to an optical fiber connector that supports an optical fiber and has a flange extending outward in the radial direction. The fastening member comprises: a base 1 with a slit 1a having a width smaller than the diameter of the flange of the optical fiber connector and larger than the diameter of a support member of the optical fiber connector; a claw part 2 for fixing the optical fiber connector that extends from the base in the direction perpendicular to the base and supports the flange; and a locking part 3 that extends from the base in the direction perpendicular to the base and has spring parts 3a in its ends.SELECTED DRAWING: Figure 1B

Description

  The present invention relates to a fastening member and an optical receptacle module.

  A fastening member for coupling the optical fiber and the optical receptacle is required to stably secure the fastening. For example, an optical receptacle having a plurality of guide members for positioning the ferrule in the radial direction and a plurality of springs engaged with the ferrule to apply a force in the insertion direction, wherein the spring is fixed to the guide member, on the ferrule side It has been proposed that a leaf spring is processed or the like (e.g., Patent Document 1).

Unexamined-Japanese-Patent No. 2003-344716 JP 2000-180669 gazette

However, there is a need to realize a simple structure fastening reliably and inexpensively.
An object of the present invention is to provide a fastening member capable of securely fastening an optical receptacle and an optical fiber connector with a simple structure at low cost, and an optical receptacle module fastened by the fastening member.

The present application includes the following inventions.
(1) A fastening member detachably mounted on an optical fiber connector comprising a support member for supporting an optical fiber and a flange portion extending outward in the radial direction,
A base portion having a slit smaller in diameter than the ridge portion of the optical fiber connector and larger in diameter than the support member;
A fastening member comprising a locking portion extending from the base in a direction perpendicular to the base and having a spring at its tip.
(2) An optical fiber connector comprising a support member for supporting an optical fiber, and a radially outwardly extending ridge portion;
A fastening member removably mounted on the optical fiber connector;
An optical receptacle module comprising the optical fiber connector and an optical receptacle fastened by the fastening member, wherein
The fastening member is
A base portion having a slit smaller in diameter than the ridge portion of the optical fiber connector and larger in diameter than the support member;
A locking portion extending from the base in a direction perpendicular to the base and having a spring at its tip,
The support member of the optical fiber connector is inserted into the slit, the surface of the ridge portion on the optical receptacle side is pressed against the base portion, and the fastening member is fastened to the optical fiber connector.
The optical receptacle is
Laser package,
A holding member for holding the laser package, and a fiber holding member disposed at one end of the holding member and having a recess on the side,
The optical receptacle module in which the said spring part is contact | abutted by the recessed part of this fiber holding member, and the said fastening member is fastened to an optical receptacle.

According to the fastening member of the present invention, the optical receptacle and the optical fiber connector can be securely fastened at a low cost and with a simpler structure.
Also, according to the optical receptacle module of the present invention, the optical receptacle and the optical fiber connector can be reliably and easily fastened by the fastening member having a simple structure, and an inexpensive optical receptacle module of high quality can be obtained. it can.

It is a side view of the fastening member of an embodiment. It is a schematic perspective view of the fastening member of FIG. 1A. FIG. 2 is a schematic perspective view from another angle of the fastening member of FIG. 1A. It is an exploded perspective view for explaining an optical receptacle module of an embodiment. FIG. 2B is an exploded perspective view from another angle of the optical receptacle module of FIG. 2A. It is a schematic perspective view which shows the fastening state of the optical receptacle module of FIG. 2B. It is a side view which shows the fastening state of the optical receptacle module of FIG. 2C. It is a cross-sectional enlarged view of the fastening member vicinity at the time of cut | disconnecting by the arrow M in FIG. 2D. It is an enlarged perspective view of the fastening member vicinity which shows the shape of the outer peripheral side of a fiber holding member. It is a schematic perspective view which shows another shape of the outer peripheral side of a fiber holding member. It is a schematic sectional drawing which shows the optical receptacle which comprises the optical receptacle module of FIG. 2A.

  The form shown below is an illustration for embodying the technical thought of the present invention, and does not limit the present invention to the following. In addition, the size and positional relationship of members shown in each drawing may be exaggerated for the sake of clarity. Furthermore, as for the same name and reference numeral, in principle, the same or the same member is shown, and the duplicated explanation is appropriately omitted.

[Fastening member]
The fastening member 10 of one embodiment in the present application includes a base portion 1 and a locking portion 3 having a spring portion at its tip, as shown in FIGS. 1A, 1B and 1C. The fastening member 10 can be detachably attached to, for example, an optical fiber connector provided with a flange portion extending outward in the radial direction.
With such a simple configuration and because they can be detachably attached, the optical fiber connector can be inexpensively, reliably and easily, for example, various members, for example, typically, an optical receptacle. And other optical fiber connectors etc.

(Base 1)
The base portion 1 supports an optical fiber connector, and includes a plate-like member. Moreover, what has a flat part in the one part is preferable. The thickness may be an extent that gives the strength to maintain the fastening. The base portion 1 can have various shapes, such as a triangle, a polygon such as a quadrangle, a circle, or an ellipse, as a rough shape in a plan view. In FIG. 1B, the base 1 has a substantially rectangular shape.
The base portion 1 has a slit 1a from one end toward the opposite end. The length of the slit 1 a may be shorter than the length of the base 1. The width of the slit 1a is preferably smaller in diameter than, for example, the ridge of the optical fiber connector to which the fastening member is attached, and larger in diameter than the support member of the optical fiber connector. By having a slit of such a width, it can be attached to an optical fiber connector. Also, the hook portion of the optical fiber connector can be locked to engage the fastening member with the optical fiber connector.

(Lock 3)
The locking portion 3 is a portion extending from the base 1 in a direction perpendicular to the base 1. Extending in the vertical direction does not necessarily extend perpendicularly to the base 1, but when the fastening member 10 is attached to the optical fiber connector, starting from the end of the base 1, the optical fiber connector It means extending toward the tip. Specifically, the locking portion 3 includes one extending so as to intersect the base portion 1 at an angle of 90 ± 20 degrees. In particular, it is preferable to extend slightly by slightly inclining so as to reduce the crossing angle with the base 1. By this, the inward fastening force in the locking portion 3 can be strengthened.
In FIG. 1B, the lock 3 extends from the base 1 so as to intersect the base 1 at 85 degrees.

The locking portion 3 has a spring portion 3a at its tip. The spring portion 3a is preferably further inclined than the inclination of the locking portion 3 so as to exert the function of a plate spring. Thereby, the fastening force which goes to the inner side in the latching | locking part 3 can be exhibited more strongly. For example, the spring portion 3a has an angle of intersection with the base portion 1 of less than 90 degrees, preferably less than 80 degrees, and more preferably less than 70 degrees.
When the optical fiber connector is inserted into the slit, the length of the locking portion 3 may be slightly shorter than the tip of the optical fiber connector, or may be the same length. For example, when the optical fiber connector is attached to another member, for example, an optical receptacle, the length of the locking portion 3 can be engaged with a part of the optical receptacle, in particular, the spring portion 3a of the locking portion 3 It is preferable to set. The width of the locking portion 3 may be equal to, greater than or less than the width of the base 1. From the ease of processing, it is preferable that the width is substantially equal to the width of the base 1.
The tip of the spring portion 3a is preferably bent outward to facilitate engagement with the optical receptacle. The degree of this bending can be set appropriately.

In FIG. 1A, the spring portion 3a is bent inward from the tip of the locking portion 3 so as to intersect the base 1 at 30 degrees. Further, the tip end of the spring portion 3a is bent outward so as to cross the spring portion 3a at 90 ± 20 degrees. Here, when the optical fiber connector is attached, the side which accommodates it is referred to as the inside, and the opposite side is referred to as the outside.
The length and width of the spring portion 3a can be appropriately set in accordance with the shape of the optical fiber connector to be used.
By having such a spring portion 3a, the optical fiber connector and the optical receptacle can be strongly fastened (see FIGS. 2C and 2D).

The locking portion 3 may extend only one from the base portion 1, but may be two or three or more. The locking portion 3 is preferably disposed in a pair, and more preferably, the pair is disposed at an opposing position.
In FIG. 1B, the approximate shape of the base portion 1 is substantially square, the slits 1a are disposed on one side, and the pair of locking portions 3 extend on a pair of sides sandwiching the slit 1a.

(The claw 2 for fixing the optical fiber connector)
The fastening member 10 preferably further has a claw 2 for fixing the optical fiber connector. The claw portion 2 is a portion extending from the base portion 1 in a direction perpendicular to the base portion 1. Here, extending in the vertical direction does not necessarily extend perpendicularly to the base 1, for example, the claws 2 intersect the base 1 at an angle of 90 ± 20 degrees. Including those that extend.
In FIG. 1B, the claws 2 extend substantially perpendicularly to the base 1.

By having such a claw portion 2, as described later, the hook portion of the optical fiber connector can be supported (see FIGS. 2C and 2D). The claw portion 2 is preferably disposed on the other side of the base portion 1 opposite to the one end having the slit 1 a. Thus, the optical fiber connector inserted into the slit 1a can be supported without disturbing the insertion of the optical fiber connector from the slit 1a.
The length and width of the claws 2 can be appropriately set according to the shape of the optical fiber connector used.

It is preferable that the tip of the claw portion 2 extending in the vertical direction with respect to the base portion 1 further has a bending portion 2 a which is bent in a parallel direction with respect to the base portion 1. Here, bending in the parallel direction does not necessarily mean not only parallel to the base 1 but also, for example, bending so as to intersect the base 1 at an angle of ± 20 degrees. . Also, it includes one that bends so as to intersect the claws 2 at an angle of 90 ± 20 degrees.
In FIG. 1B, the bent portion 2 a extends substantially perpendicularly to the claw portion 2 and is bent substantially parallel to the base portion 1.
The bent portion 2a is preferably wider than the claw portion 2 and preferably wider than the diameter of the optical fiber connector to be supported.
By this, as described later, the flange portion of the optical fiber connector can be sandwiched and supported from the opposite side of the base portion 1 in a wide range (see FIGS. 2C and 2D).

  The claw portion 2 may further have a hook portion 2b at a part of the tip of the bending portion 2a. It is preferable that the collar part 2b is extended toward the orthogonal | vertical direction with respect to the bending part 2a. Not only does the extension in the vertical direction be perpendicular to the bending portion 2a, but specifically, the ridge portion 2b intersects the bending portion 2a at an angle of 90 ± 20 degrees. Including those that extend to It is preferable that the collar part 2b is arrange | positioned at the both ends of the one side used as the edge part of the bending part 2a. If the ridge of the optical fiber connector has a recess on its surface, the ridge can be engaged with the recess, and the fastening member 10 can be firmly fastened to the optical fiber connector (see FIG. 2E). ).

It is preferable that the claws 2 be disposed adjacent to the pair of locking portions 3 in the base portion 1. With such an arrangement, the optical fiber connector can be stably supported, and the optical fiber connector and the optical receptacle can be detachably and firmly fastened.
In FIG. 1B, the pair of locking portions 3 extend in a pair of sides sandwiching one side of the rectangular base portion 1 where the slits 1a are arranged, and in the side adjacent to the pair of locking portions 3, the claws 2 Is extended.

[Optical receptacle module 20]
The optical receptacle module 20 according to one embodiment includes an optical fiber connector 30, the above-described fastening member 10, and an optical receptacle 40, as shown in FIGS. The optical fiber connector 30 and the optical receptacle 40 are fastened by the fastening member 10 and optically coupled.
As described above, the fastening member 10 is detachably attached to the optical fiber connector 30 and the optical receptacle 40, and can be easily attached with a simple shape, and is inexpensive and more secure. Is secured, and a high performance optical receptacle module can be obtained.

(Optical fiber connector 30)
As shown in FIG. 2A, the optical fiber connector 30 includes a ferrule 31, a support member 32, and a flange portion 32a that spreads outward in the radial direction at one end.
The ferrule 31 is configured such that the optical fiber 34 is inserted from its end, and the end opposite to the insertion side of the optical fiber 34 is supported by the support member 32 so that the outer periphery is covered There is. A well-known thing can be used as a ferrule.
The support member 32 supports the ferrule 31 and has a portion into which the ferrule 31 can be inserted. The support member 32 may have a constant diameter, or may have a portion having a plurality of diameters. The supporting member 32 has a flange portion 32 a extending outward in the radial direction at an end of the side supporting the ferrule 31.
The flange portion 32a may have an annular shape having a diameter larger than that of the portion covering the ferrule 31, or a portion thereof, for example, a recess or a radial recess which is disposed on the surface One or more recesses 32b may be formed. Although the support member 32 itself, the support member 32 and the flange portion 32a may be configured by one member, a plurality of members may be combined to be integrally configured.

(Optical receptacle 40)
The optical receptacle 40 shown in FIGS. 2A to 2E includes, for example, a laser package 42, a holding member 43 for holding the laser package 42, and a fiber holding member 47, as shown in FIG. In addition, the lens with a lens barrel 44 may be disposed on the light emitting surface side of the laser package 42.

A laser element 41 is housed in the laser package 42. The laser element 41 may have any peak wavelength from ultraviolet to infrared, and for example, one having an emission peak wavelength of 300 nm to 500 nm can be mentioned. The laser package 42 is preferably held by the holding member 43. The laser package 42 includes, for example, a can package including a plurality of members such as a base 42A, a cap 42B with a window 42C, and a lead 42D.
On the upper surface of the base 42A, a submount 45 is disposed on a post which is a columnar member standing upright from the upper surface, and the laser element 41 is usually formed of Au-Sn, Ag paste on the submount 45, It fixes using die-bonding members, such as In alloy.
A plurality of leads 42D are disposed from the top surface side to the bottom surface side of the base 42A so as to penetrate the base 42A, fixed via an insulating member, and electrically connected to an external power supply.
A hollow cap 42B is bonded to the upper surface side of the base 42A in the vicinity of the periphery of the base 42A so as to cover the laser element 41. On the upper surface of the cap 42B, a window 42C for penetrating light in the thickness direction and extracting light is disposed at a portion facing the laser element 41.

  The holding member 43 is a cylindrical member which holds and accommodates the laser package 42. The holding member 43 may be configured by one member or may be configured by two or more members.

In addition, a fiber holding member 47 is disposed above the holding member 43 in order to guide without blocking the light emitted from the holding member 43 and to perform fastening to the fastening member 10. The outer shape of the fiber holding member 47 is preferably such that one or more recesses 47 a are formed on the outer peripheral side surface of the fiber holding member 47 in the axial direction of the fiber holding member 47. Further, as shown in FIG. 2F, the fiber holding member 47 is a portion that contacts the fastening member 10, and one or more flat surfaces 47b parallel to the axial direction are formed in a part of the outer peripheral side surface, As shown in 2G, it is preferable that one or more recesses 47c or two or more protrusions be formed. The fiber holding member 47 and the fastening member 10 can be engaged using this unevenness, and the fastening between the fastening member 10 and the optical fiber connector 30 can be strengthened. In particular, rotation of the optical receptacle 40 in the fastening member can be suppressed or prevented by having the flat surface 47 b or the recess 47 c or the projection described above.
The fiber holding member 47 may be formed of only one member, or may be formed by combining two or more members.

  It is preferable that the base 42A, the cap 42B, the holding member 43 and the fiber holding member 47 be formed of a material having good reflectivity and heat dissipation. For example, metals such as Cu, W, Ta, Mo, Al, Fe, Ag, Au, Rh, Kovar, brass, CuW, CuMo and the like can be used. These metals may be used as a base material, and plating may be performed on the entire surface or a part of the surface with Au, Ag, Al or the like. Among them, copper or copper alloy with a gold-plated surface can be mentioned.

(Fastening by fastening member 10)
The optical fiber connector 30 and the optical receptacle 40 are detachably fastened by the fastening member 10. In this case, for example, as shown in FIGS. 2C, 2D, and 2E, the ferrule 31 of the optical fiber connector 30 is inserted into the fiber holding member 47 of the optical receptacle 40 and pushed into the optical receptacle 40 side.
In the fastening member 10, the slit 1 a of the base 1 is inserted into the optical fiber 34 of the collar 32 a of the optical fiber connector 30. Since the slit 1a has a smaller diameter than the collar 32a and a larger diameter than the support member 32 of the optical fiber connector, the base 1 is the ferrule 31 that is the surface on the optical fiber 34 side of the collar 32a. It abuts toward the optical receptacle 40 side.
Further, the pair of locking portions 3 of the fastening member 10 is disposed so as to sandwich the fiber holding member 47 for guiding and holding the ferrule 31 inside, and the spring portion 3a contacts the recess 47a of the fiber holding member 47. By pressing inward, the fiber holding member 47 is held and pulled toward the optical fiber connector 30 side.

When the fastening member 10 has the hook 2 for fixing the optical fiber connector, the flange 32a of the support member 32 disposed inside the fastening member 10 is supported by the hook 2 and the ferrule 31 of the hook 32a. The side surface is engaged by the bend 2 a of the claw 2. That is, the front and back surfaces of the flange portion 32 a are sandwiched and fixed by the bending portion 2 a of the fastening member 10 and the base portion 1.
Furthermore, as described above, when the recess 32b is formed in the ridge 32a, as shown in FIG. 2E, the ridge 2b at the tip of the bending portion 2a of the fastening member 10 is the recess 32b of the ridge 32a. And the fastening member 10 is fixed to the optical fiber connector 30 more firmly.
In other words, the support member 32 of the optical fiber connector 30 is inserted into the slit 1 a, the surface on the optical receptacle side of the ridge 32 a is pressed by the base 1, and the fastening member 10 is fastened to the optical fiber connector 30. Further, the spring portion 3a of the fastening member 10 abuts on the recess 47a of the fiber holding member 47, and the fastening member is fastened to the optical receptacle.

That is, the support member 32 of the optical fiber connector 30 is inserted into the slit 1 a of the fastening member 10. At the same time, the spring portion 3a of the fastening member 10 is pushed out and the optical receptacle 40 is inserted horizontally into the base portion 1 between the spring portions 3a. As a result, the fastening member 10 can be easily attached to the optical fiber connector 30 and the optical receptacle 40.
On the other hand, in a state where the optical fiber connector 30 and the optical receptacle 40 are fastened by the fastening member 10, the optical fiber connector 30 and the optical receptacle 40 are horizontally removed from the opening of the slit 1a of the fastening member 10 to the base portion 1 . This makes it easy to remove.
Moreover, since fastening member 10 itself has simple structure, it can manufacture at low cost. Furthermore, the individual components allow for a secure and rigid fastening of the various components, typically the fiber optic connector and the optical receptacle.

  The light emitting device of the present invention includes various display devices, lighting devices, displays, back light sources of liquid crystal displays, image reading devices such as copiers and scanners, projector devices, laser displays, endoscopes, headlights for vehicles. And bar code scanner etc. can be used suitably.

DESCRIPTION OF SYMBOLS 1 base part 1a slit 2 claw part 2a bending part 2b collar part 3 locking part 3a spring part 10 fastening member 20 optical receptacle module 30 optical fiber connector 31 ferrule 32 support member 32a collar part 34 optical fiber 40 optical receptacle 41 laser element 42 Laser package 42A Base 42B Cap 42C Window 42D Lead 43 Holding member 44 Lens with lens barrel 45 Submount 47 Fiber holding member 47a Recess 47b Flat 47c Recess

Claims (7)

A fastening member detachably mounted on an optical fiber connector comprising a support member for supporting an optical fiber and a flange portion extending radially outward,
A base portion having a slit smaller in diameter than the ridge portion of the optical fiber connector and larger in diameter than the support member;
A fastening member comprising a locking portion extending from the base in a direction perpendicular to the base and having a spring at its tip. The base further includes a hook for fixing the optical fiber connector, which extends from the base in a direction perpendicular to the base and supports the hook.
The fastening member according to claim 1, wherein the claw portion has a bending portion which is bent in a direction parallel to the base portion at a part of a tip thereof.   The fastening member according to claim 2, wherein the claw portion for fixing the optical fiber connector has a hook portion at a part of a tip of the bent portion.   The pair of locking portions are disposed to face each other, and a claw portion for fixing the optical fiber connector is disposed adjacent to the pair of locking portions. Fastening member. An optical fiber connector comprising a support member for supporting an optical fiber, and a radially outwardly extending ridge portion;
A fastening member removably mounted on the optical fiber connector;
An optical receptacle module comprising the optical fiber connector and an optical receptacle fastened by the fastening member, wherein
The fastening member is
A base portion having a slit smaller in diameter than the ridge portion of the optical fiber connector and larger in diameter than the support member;
A locking portion extending from the base in a direction perpendicular to the base and having a spring at its tip,
The support member of the optical fiber connector is inserted into the slit, the surface of the ridge portion on the optical receptacle side is pressed against the base portion, and the fastening member is fastened to the optical fiber connector.
The optical receptacle is
Laser package,
A holding member for holding the laser package, and a fiber holding member disposed at one end of the holding member and having a recess on the side,
The optical receptacle module in which the said spring part is contact | abutted by the recessed part of this fiber holding member, and the said fastening member is fastened to an optical receptacle. The base further includes a hook for fixing the optical fiber connector, which extends from the base in a direction perpendicular to the base and supports the hook.
The claw portion has a bending portion that bends in a direction parallel to the base portion at a part of the tip, and the bending portion presses one surface of the collar portion, and the fastening member The optical receptacle module according to claim 5, wherein the optical fiber connector is fastened. The claw portion has a hook portion at a part of the tip of the bent portion,
The ridge portion of the optical fiber connector has a recess on at least the one surface,
The optical receptacle module according to claim 6, wherein the hook portion engages with the recess, and the fastening member fastens the optical fiber connector.