JP4053682B2 - Optical joining sleeve holding structure and optical connector adapter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical connector sleeve holding structure for an optical connector adapter with a reduced number of parts, and an optical connector adapter using the same.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, optical connector adapters represented by SC type optical connector adapters have built-in optical connection sleeves for optically coupling optical fibers by aligning and aligning ferrules containing optical fibers. Yes. The optical connection sleeve is held by a sleeve holder divided in two in the axial direction, and this sleeve holder is held in a housing divided in two in the axial direction.
[0003]
Here, an external view and a longitudinal section of the SC type optical connector adapter are shown in FIGS. As shown in these drawings, an optical connection sleeve 101 such as a split sleeve having a single slit is built in a pair of sleeve holders 102 and 103. The pair of sleeve holders 102 and 103 is held by a pair of housings 104 and 105.
[0004]
These sleeve holders 102 and 103 have holding holes 102a and 103a for incorporating the optical connection sleeve 101, respectively, and a stopper portion 102b whose peripheral edge protrudes inwardly at one end of the holding holes 102a and 103a. And 103b are provided in the circumferential direction. The stopper portions 102b and 103b are in contact with the end face of the optical connection sleeve 101, respectively, to restrict the movement of the optical connection sleeve 101 in the axial direction. The pair of sleeve holders 102 and 103 has a structure for sandwiching the optical connection sleeve 101 from both axial sides. Therefore, the end portions on the inner side in the axial direction have a structure of fitting with each other, and flange portions 102c and 103c are provided on the peripheral portion. The sleeve holders 102 and 103 are provided with a pair of claw portions 102e and 103e having locking claws 102d and 103d engaged with the optical connector plug at their tips at positions opposed to each other in the radial direction.
[0005]
On the other hand, the housings 104 and 105 have flange portions 104a and 105a for joining them, and holding grooves 104b and 105b for holding and holding the flange portions 102c and 103c of the sleeve holders 102 and 103 on the inner peripheral surface thereof. Have Therefore, by welding the flange portions 104a and 105a of the housings 104 and 105 with ultrasonic waves or the like, the pair of sleeve holders 102 and 103 are sandwiched between holding grooves 104b and 105b formed on the inner peripheral surfaces of the housings 104 and 105. It is supposed to be retained. Openings 104c and 105c into which optical connector plugs can be inserted are formed on the opposite sides of the housings 104 and 105 from the flanges 104a and 105a.
[0006]
A plate 106 that is a metal locking spring that engages with the optical connector mounting panel is provided on the outer peripheral surface of one housing 105.
[0007]
[Problems to be solved by the invention]
As described above, the conventional optical connector adapter has a problem that the number of parts is large and the assembling work is troublesome.
In view of such circumstances, the present invention provides an optical connector adapter holding structure for an optical connector adapter that can be easily assembled and an optical connector adapter that can be changed after assembly. The task is to do.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention for solving the above problem, in a holding structure for holding an optical connection sleeve in an optical connector adapter, a cylindrical portion having a through hole for holding the optical connection sleeve therein, and the cylinder First and second claw portions that are intermittently provided in the circumferential direction at both ends in the axial direction of the shape portion and abut against the end face of the optical connection sleeve, and each of the first claw portions The circumferential position and the circumferential position of each of the second claw portions do not coincide with each other, and at least one of the first and second claw portions is provided so as to be elastically deformable in the radial direction. It is in the holding structure of the sleeve for optical connection characterized by the above-mentioned.
[0009]
According to a second aspect of the present invention, in the optical connector adapter that holds the optical connection sleeve, a cylindrical portion having a through-hole that houses and holds the optical connection sleeve, and circular portions at both ends in the axial direction of the cylindrical portion. A sleeve holder that is provided intermittently in the circumferential direction and integrally includes first and second claw portions that contact the end face of the optical connection sleeve; and a housing that holds the sleeve holder, Each circumferential position of the first claw portion and each circumferential position of the second claw portion do not match, and at least one of the first and second claw portions has a diameter. The optical connector adapter is provided so as to be elastically deformable in a direction.
[0010]
According to a third aspect of the present invention, in the second aspect, the optical connector further comprises a housing that fits and holds the sleeve holder to form an opening engageable with the optical connector plug. in the adapter.
[0011]
In the optical connection sleeve holding structure of the present invention, the optical connection sleeve can be held in the through-hole while elastically deforming the first claw portion provided in the cylindrical portion, so that the work such as assembly of the sleeve holder can be performed. Can be omitted.
When the optical connection sleeve holding structure of the present invention is used, the number of parts of the optical connector adapter can be greatly reduced and the assembling work can be simplified.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
1 is a cross-sectional view of an optical connector adapter employing the optical connection sleeve according to the first embodiment, FIG. 2 is a cross-sectional view taken along line AA ′ in FIG. 2, and FIG. An arrow sectional view and FIG. 4 show a front view of the main part.
[0013]
The optical connector adapter of this embodiment is an SC type optical connector adapter, and includes a sleeve holder 10 that holds the optical connection sleeve 1 and a housing 20 that holds the sleeve holder 10.
The sleeve holder 10 includes a cylindrical body 11 having a through-hole 11 a that houses the optical connection sleeve 1, and first and second stopper claws 12 and 13. A rectangular flange portion 14 is provided on the outer periphery.
[0014]
On both sides on the short side of the flange portion 14, there are provided claw portions 15 provided so as to sandwich both end portions of the cylindrical body 11 and having a locking claw 15a at the tip. On the other hand, a locking portion 14 a is provided on the long side of the flange portion 14.
The housing 20 has a structure in which the sleeve holder 10 is built, and has a rectangular through-hole 21 that substantially fits the flange portion 14. On the other hand, a through groove 22 that engages with the locking portion 14 a of the flange portion 14 of the sleeve holder 10 is provided in the axially central portion of the long side wall of the housing 20. In addition, a fixing flange 23 is provided in the axial center of the short side surface of the housing 20, and the fixing flange 23 is provided with a fixing hole 24 for fixing the housing 20. Further, a recess 25 is formed on the side surface on one short side in the axial direction of the housing 20 with a fixing flange 23 interposed therebetween, and a plate 30 which is a metal locking claw is engaged with the recess. ing.
[0015]
Here, the sleeve holder 10 is integrally formed, and the positions of the first stopper claw 12 and the second stopper claw 13 in the circumferential direction do not coincide with each other in order to facilitate the axial release. It has become. That is, as shown in FIG. 4, the circumferential positions of the first stopper claw 12 and the second stopper claw 13 are offset. The shapes of the stopper claws 12 and 13 are not particularly limited. At least one of the stopper claws 12 and 13 can be elastically deformed radially outward, and the axial movement of the optical connection sleeve 1 held in the through hole 11a can be restricted. Anything is acceptable. Accordingly, the number is not limited, and may be 1 to 3 or 5 or more.
[0016]
In the present embodiment, the second stopper claw 13 is provided so as to be easily elastically deformed radially outward. The second stopper claw 13 penetrates the optical connection sleeve 1 while being elastically deformed. It can be inserted into the hole 11a. That is, the assembly of the optical connection sleeve 1 to the sleeve holder 10 can be performed very easily.
[0017]
On the other hand, the housing 20 is also integrally formed, and the sleeve holder 10 is inserted and fitted from the axial direction. Specifically, by inserting the sleeve holder 10 into the housing 20, the locking portion 14 a of the flange portion 14 is press-fitted into the housing 20 and engaged with the through groove 22 and fixed. In other words, assembly is facilitated by insertion and fitting from the axial direction.
[0018]
As described above, according to this embodiment, the number of parts of the SC type optical connector adapter can be reduced from the conventional 6 points to 4 points, and the assembling work can be greatly simplified.
In addition, although this embodiment demonstrated taking the case of SC type | mold optical connector adapter, it is needless to say that it is not limited to this and is applicable to other similar adapters.
[0019]
【The invention's effect】
As described above, according to the present invention, for example, the number of parts of the SC type optical connector adapter can be reduced from the conventional 6 points to 4 points, and the assembly work can be greatly simplified. , A significant cost reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an optical connector adapter according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA ′ in FIG.
3 is a cross-sectional view taken along the line BB ′ in FIG. 2;
FIG. 4 is a front view of an essential part of the optical connector adapter according to the embodiment of the present invention.
FIG. 5 is a perspective view in which a SC type optical connector adapter according to the prior art is partially cut away.
FIG. 6 is a sectional view of an SC type optical connector adapter according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Optical connection sleeve 10 Sleeve holder 11 Tubular body 11a Through-hole 12, 13 Stopper claw 14 Flange part 15 Claw part 20 Housing 21 Through-hole 22 Through-groove 23 Fixed flange 24 Fixed hole 25 Recessed part 30 Plate

Claims (3)

In a holding structure for holding an optical connection sleeve in an optical connector adapter, a cylindrical portion having a through hole for holding and holding the optical connection sleeve and intermittently in the circumferential direction at both axial ends of the cylindrical portion. And first and second claw portions that are in contact with the end face of the optical connection sleeve,
Each and circumferential position of the first claw portion, and each of the circumferential position of the second claw portion is matched to Orazu, at least one of the first and second claw portions A holding structure for a sleeve for optical connection, which is provided so as to be elastically deformable in a radial direction . In an optical connector adapter for holding an optical connection sleeve, a cylindrical portion having a through-hole for holding and holding the optical connection sleeve, and intermittently provided in the circumferential direction at both axial ends of the cylindrical portion, respectively. A sleeve holder that integrally includes first and second claw portions that contact the end surface of the optical connection sleeve; and a housing that holds the sleeve holder;
The respective circumferential position of the first claw portion, and each of the circumferential position of second pawl portion is matched to Orazu, at least one of the diameter of the first and second claw portions An optical connector adapter, wherein the optical connector adapter is provided so as to be elastically deformable in a direction . 3. The optical connector adapter according to claim 2 , wherein the housing forms an opening that can be engaged with and held by the optical connector plug by fitting and holding the sleeve holder.

Images