JP2011133611A - Backlash prevention mechanism of adapter for optical connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively prevent backlash caused by a gap between the inside of an opening edge of an adapter attaching hole and a side surface of an adapter body when the adapter body is inserted into the adapter attaching hole of a panel. <P>SOLUTION: A U-shaped-frame-like backlash prevention tool 1 attached to the adapter body 10 for an optical connector includes: first locking pieces 3a and 3b folded obliquely outward so that both end side surfaces 3 of a U-shaped frame come into pressure contact with the inside of an opening edge of the adapter attaching hole Q of the panel P; and second locking pieces 4a and 4b erected obliquely outward from the center of the both end side surfaces 3 of the U-shaped frame so as to face locking projections 11a and 11b formed on each side surface of the adapter body 10. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a rattling mechanism for an optical connector adapter in high-density mounting of an optical connector plug.

  Conventionally, as an optical connector adapter rattling mechanism used for high-density mounting of optical connector plugs, as shown in FIG. 7, locking protrusions 101a formed on the side surface of the optical connector adapter body 100, 101b, and spring-like locking pieces 102a, 102b for fixing the panel P formed so as to face the locking projections 101a, 101b, and the panel P while pressing the spring-like locking pieces 102a, 102b A so-called snap-in method, in which the opening edge of the adapter mounting hole Q is fixed between the locking protrusions 101a and 101b and the spring-shaped locking pieces 102a and 102b. ing.

None

  However, conventionally, when the adapter main body 100 for an optical connector is inserted into the adapter mounting hole Q of the panel P, it is sandwiched between the locking protrusions 101a and 101b and the spring-shaped locking pieces 102a and 102b. There was a gap between the inside of the opening edge of the adapter mounting hole Q and the adapter main body 100, and there was a problem that the adapter main body 100 was rattled in the vertical and horizontal directions.

  Further, when the panel P is vibrated, there is also a problem that a rattling sound is generated due to such rattling of the adapter main body 100.

  Therefore, the present invention has been devised in view of the conventional circumstances as described above, and when the adapter main body for an optical connector is inserted into the adapter mounting hole of the panel, the opening edge of the adapter mounting hole is formed. It is an object of the present invention to provide an optical connector adapter ratchet mechanism that can effectively prevent the occurrence of play due to a gap generated between the inner side and the side surface of the adapter body.

  In order to solve the above-described problems, the present invention includes a U-shaped frame-shaped ratchet that is attached to an adapter main body for an optical connector, and the ratchet fastener has side surfaces at both ends of the U-frame. A first locking piece that is bent obliquely outward so as to press against the inner edge of the opening of the adapter mounting hole of the panel, and a U-shaped frame so as to face the locking protrusions formed on both side surfaces of the adapter body A second locking piece portion cut and raised obliquely outward from the center of both side surfaces of the adapter, and the adapter body is inserted into the adapter mounting hole while pressing the second locking piece portion of the backlash stopper, While fixing the opening edge of the adapter mounting hole between the locking protrusion and the second locking piece, the first locking piece of the backlash stopper is crushed to open the opening edge of the adapter mounting hole. It is characterized by being formed so as to be pressed against the inside.

  According to the present invention, when the adapter main body for an optical connector is inserted into the adapter mounting hole of the panel, the backlash caused by the gap generated between the inner side of the opening edge of the adapter mounting hole and the side surface of the adapter main body is prevented. It can be effectively prevented.

  In other words, the ratchet stopper of the present invention includes a first locking piece portion that is bent obliquely outward so that both side portions of the U-shaped frame are in pressure contact with the inner side of the opening edge of the adapter mounting hole of the panel, and the adapter body Since the adapter body is provided with a second locking piece portion that is cut obliquely outward from the center of both side surface portions of the U-shaped frame so as to face the locking protrusions formed on both side surfaces of the adapter. When inserted into the adapter mounting hole, the adapter mounting hole is inserted into the adapter mounting hole while pressing the second locking piece portion of the backlash stopper, and between the locking protrusion and the second locking piece portion. At the same time, the first locking piece is crushed and pressed against the inside of the opening edge of the adapter mounting hole, so that the inside of the opening edge of the adapter mounting hole and the side surface of the adapter body can be fixed. To prevent backlash caused by gaps between Can.

  Furthermore, even if the panel is vibrated, it is possible to prevent rattling noise and to insert the optical connector plug into the adapter body for the optical connector without any trouble.

The usage example to the adapter main body of the back stopper in one form for implementing this invention is shown, (a) is a perspective view before attachment, (b) is a perspective view after attachment. It is a top view of the state where the backlash stopper was similarly attached to the adapter main body. Similarly, it shows an example of the configuration of the rattling stopper, (a) is a perspective view, (b) is a plan view, (c) is a front view, and (d) is a side view. The process which attaches the adapter main body which similarly attached the rattling stopper to the adapter attachment hole of a panel is shown, (a) is a partially notched top view which shows the state before attaching to an adapter attachment hole, (b) is an adapter attachment hole. FIG. 7C is a partially cutaway plan view showing a state after being attached to the adapter, and FIG. It is a side view which shows the 2nd example of a structure of a backlash stopper similarly. It is a side view which shows the 3rd example of a structure of a backlash stopper similarly. It is a top view which shows the adapter main body for optical connectors in a prior art example.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. An optical connector adapter according to the present invention shown in the illustrated example is composed of an adapter body 10 for a single-fiber connector and can be mounted at high density. It is fixed to the adapter mounting hole Q having the rectangular opening shape of the panel P. Of course, the optical connector adapter may be an adapter main body 10 for an optical connector having two or three or more cores.

  The adapter body 10 connects two optical connector plugs as shown in FIGS. 1A, 1B, 2, 4A, 4B, and 4C. In order to be able to do so, it is formed in the shape of a rectangular tube by a synthetic resin molding, and one plug fitting portion A for inserting an optical connector plug at both ends of the adapter main body 10 so that the optical axes coincide with each other; The other plug fitting portion B into which a plug of a connector plug or other optical component is inserted is provided. Then, a pair of left and right joining end walls having a substantially U-shaped frame shape is disposed at the center of the adapter main body 10, and a fitting end in one plug fitting portion A and a connecting end in the other plug fitting portion B are arranged. Each is open horizontally.

  Also, as shown in FIGS. 4A, 4B, and 4C, one cylinder is fitted to one of the pair of left and right joining end walls arranged at the center of the adapter body 10. The other cylinder protrudes toward the connection end, and the other cylinder protrudes toward the connection end. Both cylinders are aligned with the central axis on the optical axis, and are connected to the connection end. The sleeve holder 13 is formed by engaging and fixing the walls. At this time, a cylindrical split sleeve is mounted and held inside the sleeve holder 13.

  As shown in FIGS. 1A, 1B, 4A, 4B, and 4C, the adapter main body 10 is integrally formed at each center of the left and right side surfaces. The vertically elongated locking projections 11a and 11b, and the adapter projections 10 are squeezed on both sides from the position of the locking projections 11a and 11b toward, for example, one plug fitting portion A. Thus, the engaging portion 12 of the backlash stopper 1 is formed.

  The engagement portion 12 of the backlash stopper 1 has a fitting recess 12a having the same shape and the same size as the side surface portions 3 on both ends of the backlash stopper 1 and the same width as that of the elongated plate-like central support surface portion 2 of the backlash stopper 1. It consists of a joint groove portion 12b. The fitting recess 12a is formed in a rectangular shape near the locking projections 11a and 11b at substantially the center on both side surfaces of the adapter body 10, while the fitting groove 12b communicates with the lower center of the fitting recess 12a to form a narrow groove. Is formed.

  Thus, as shown in FIG. 1 (a), FIG. 1 (b), FIG. 3 (a), FIG. 3 (b), FIG. 3 (c), and FIG. An elastic U-shaped frame shape, that is, a first locking piece portion on the rear end side of both lateral side surface portions 3 formed into a horizontally wide rectangular plate standing upright from both the left and right ends of an elongated plate-like central support surface portion 2 3a and 3b are extended.

  Also, the first locking pieces 3a and 3b on the rear end side of the side surface portions 3 of the backlash stopper 1 are slightly bent outward in the diagonal direction, and in front of the locking protrusions 11a and 11b of the adapter body 10. Arranged in a locked state. At this time, as shown in FIG. 2, the first locking pieces 3 a and 3 b slightly protrude outward from the side surface of the adapter body 10, and the adapter body 10 is inserted into the adapter mounting hole Q of the panel P. As shown in FIG. 4 (c), when the first locking pieces 3a and 3b of the backlash stopper 1 are crushed, the adapter main body 10 itself is pressed against the inside of the opening edge of the adapter mounting hole Q while being crushed. Is held on the panel P without play.

  Further, at the center of both side surface portions 3 of the backlash stopper 1, as shown in FIGS. 1 (a), 1 (b), 3 (a), and 3 (d), a U-shaped slit is formed. The horizontally long cut portions 5a and 5b are formed, and the second locking piece portions 4a and 4b each having a horizontally long rectangular plate shape are formed by slightly raising the cut portions 5a and 5b obliquely outward from the bases of the cut portions 5a and 5b. Yes. At this time, the second locking piece portions 4a and 4b are folded in a substantially square shape in a state where elasticity is applied from the base position on the front side toward the side where the first locking piece portions 3a and 3b on the rear side are located. When bent and formed on the engaging portion 12 of the adapter body 10, the tips of the second locking pieces 4a and 4b are locking protrusions 11a formed on both side surfaces of the adapter body 10. It should be opposed to 11b.

  In addition, the space | interval from the latching protrusion 11a, 11b to the 2nd latching piece part 4a, 4b front-end | tip is set so that it may become as large as the thickness of the adapter attachment hole Q part of the panel P. FIG.

  Thus, when the adapter main body 10 is inserted into the adapter mounting hole Q of the panel P, the adapter mounting hole Q is pressed while the second locking pieces 4a and 4b of the backlash stopper 1 mounted on the adapter main body 10 are pressed. And the opening edge of the adapter mounting hole Q is fixed between the locking protrusions 11a, 11b and the second locking pieces 4a, 4b.

By the way, the backlash stopper 1 shown in FIGS. 1 to 4 has the first locking pieces 3a and 3b extending on the entire rear end side of both side surface portions 3, but is limited to this structure. is not.
For example, as shown in FIG. 5, first locking pieces 3 a and 3 b may be formed at the upper end corner on the rear end side.
Moreover, as shown in FIG. 6, you may form the 1st locking piece part 3a, 3b in the whole upper end of the both-ends side part 3. As shown in FIG.

Next, an example of use of the configuration configured as described above will be described.
First, as shown in FIG. 1 (a), the backlash stopper 1 is pushed into the engaging portion 12 provided on the left and right side surfaces of the adapter body 10 from below, and both side surface portions 3 of the backlash stopper 1 are engaged. The center support surface portion 2 is fitted into the fitting groove portion 12b in the fitting concave portion 12a in the joint portion 12, respectively.

  As a result, the elastic U-shaped backlash stopper 1 has its lower ends on both side surfaces 3 restricted from being lowered downward by stepped portions provided on both lower ends of the fitting recess 12a of the adapter body 10. At the same time, the adapter body 10 is pressed and fixed to the side surface and the lower surface.

  Next, as shown in FIG. 4A, the plug fitting portion A side of the adapter body 10 is inserted into the adapter mounting hole Q of the panel P.

  As shown in FIG. 4B, during the insertion, first, the second locking piece portions 4a and 4b of the backlash stopper 1 are inserted into the adapter mounting hole Q while being pressed.

  As shown in FIG. 4 (c), when the locking projections 11a and 11b of the adapter main body 10 come into contact with the adapter mounting hole Q, the second locking pieces 4a and 4b are elastically returned to the outside. And the opening edge of the adapter mounting hole Q is fixed between the locking protrusions 11a, 11b and the tips of the second locking pieces 4a, 4b.

  At the same time, the first locking pieces 3a and 3b are pressed against the inner side of the opening edge of the adapter mounting hole Q while being crushed to hold the adapter body 10 itself. The inner side of the opening edge of the adapter mounting hole Q and the side surface of the adapter body 10 Occurrence of play due to the gap between the two is reliably prevented.

P Panel Q Adapter mounting hole A, B Plug fitting part 1 Backlash stopper 2 Center support surface part 3 Both side surface parts 3a, 3b First locking piece part 4a, 4b Second locking piece part 5a, 5b Cut part 10 Adapter main body 11a, 11b Locking protrusion 12 Engaging part 12a Fitting recess 12b Fitting groove 13 Sleeve holder 100 Adapter main body 101a, 101b Locking protrusion 102a, 102b Spring locking piece

Claims (1)

  Equipped with a U-shaped frame-shaped stopper that is attached to the adapter body for the optical connector, and the ratchet stopper is obliquely outward so that both side surfaces of the U-shaped frame are pressed against the inside of the opening edge of the adapter mounting hole of the panel. A first locking piece that is bent into a second shape, and a second locking portion that is cut and raised diagonally outward from the center of both side surfaces of the U-shaped frame so as to face the locking protrusions formed on both side surfaces of the adapter body. The adapter body is inserted into the adapter mounting hole while pressing the second locking piece portion of the backlash stopper, and is interposed between the locking protrusion and the second locking piece portion. An adapter for an optical connector characterized by being fixed with an opening edge portion of the adapter mounting hole interposed therebetween, and a first locking piece portion of the backlash stopper being crushed to be in pressure contact with the inner side of the opening edge of the adapter mounting hole. The backlash stop mechanism.

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