JP4046277B2 - Drawer unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drawer unit in which an optical fiber is drawn into a drawer tray that can be pulled out to a case body.
[0002]
[Prior art]
A drawer unit in which an optical fiber is drawn into a drawer tray that can be freely drawn into the case main body needs to have an extra length of the optical fiber so that it can correspond to the drawer distance of the drawer tray. Therefore, the extra length of the optical fiber is protected by a bellows-like protective member in order to prevent disconnection due to extra tension when the drawer tray is inserted and removed. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-232273
[Problems to be solved by the invention]
However, the device disclosed in Patent Document 1 has a problem that the size of the unit is increased because the space for storing the protective member needs to be secured in the unit, and the manufacturing cost is increased due to the protective member. .
[0005]
[Means for Solving the Problems]
The drawer unit of the present invention, which has been made to solve the above-mentioned problems, has a notch portion that follows the rear edge at the side of the bottom plate portion of the drawer tray that can be pulled out to the case main body. An optical fiber main body side guide member is provided on the front end side of the bottom plate portion of the case main body facing the optical fiber, and an optical fiber tray side guide member is provided on the rear side of the bottom plate portion of the drawer tray so that the optical fiber is interposed between the two guide members. Wire and include the extra length of the optical fiber required for the pull-out distance of the pull-out tray, and when the pull-out tray is stored in the case body, position the tray-side guide part diagonally behind the main-body-side guide part and When the drawer is pulled out, the optical fiber routed between the two guide members is slackened while the main body side guide member is used as a fulcrum to move forward along with the tray guide member that moves forward in response to the drawer tray being pulled out. It is characterized in that it has assumed to move the stored state and symmetrically located in order.
[0006]
The drawer unit of the present invention is a guide for an optical fiber on the main body side of the bottom plate portion of the case main body facing a notch formed on the side of the bottom plate portion of the drawer tray that can be pulled out to the case main body. And an optical fiber tray-side guide member on the rear side of the drawer tray, and the optical fiber is wired between the two guide members so that the extra length of the optical fiber required for the pull-out distance of the drawer tray is included. Therefore, when the drawer tray is pulled out, the optical fiber between the two guide members moves symmetrically to the front side according to the movable tray side guide member with the main body side guide member as a fulcrum. Can be done accurately.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a drawer tray stored in the case body 2 so as to be freely pulled out. A cutout portion 12 following the rear end edge is provided on the side portion of the bottom plate portion 11 of the drawer tray 1 over the front end side. An optical fiber main body side guide member 22 is provided in front of a position where the notch 12 of the bottom plate portion 21 of the case body 2 faces when the drawer tray 1 is stored in the case body 2, and the bottom plate of the drawer tray 1 is provided. An optical fiber tray-side guide member 13 is provided on the rear side of the portion 11. Then, an optical fiber for performing external wiring between the guide members 22 and 13 via the case main body 2 is obliquely routed in the depth direction of the tray main body 1 and the extra length of the optical fiber necessary for the pull-out distance of the drawer tray 1 is obtained. Is included.
[0008]
That is, when the drawer tray 1 is stored in the case main body 2, the tray side guide portion 13 is positioned obliquely behind the main body side guide portion 22, so that when the drawer tray 1 is pulled out, between the guide members 13 and 22. The optical fiber that has been routed moves obliquely forward along with the tray guide member 13 that moves forward in accordance with the pull-out of the drawer tray 1 with the main body side guide member 22 as a fulcrum while being slackened. The extra length of the fiber is included in the optical fiber wired between the guide members 13 and 22. Further, it is preferable that the tray side guide portion 13 is exposed from the case body 2 when the drawer tray 1 is pulled out and is provided at a position where wiring work is easy.
[0009]
The tray-side guide member 13 shown in the figure is an inner wall 42 and an outer wall 43 erected on the inner and outer sides of the fan-shaped bottom plate portion 41 shown in FIG. 3 constituting the optical fiber cord reel 4 installed adjacent to the notch portion 12. Although the main guide portion 44 is formed and the guide member 40 having the saddle-shaped sub guide portions 45 formed on both outer sides of the outer wall 43 is disposed behind the bottom plate portion 11, the sub guide portion 45 is used. You may attach the same guide member 40 or another guide member to a different location. Further, the main body side guide member 22 similarly uses the main guide portion 44 of the guide member 40 constituting the optical fiber cord reel 4, but this may also use another guide member. The optical fibers 22 and 13 are not particularly limited as long as the optical fibers are curved to a radius of curvature or less that does not impair the function and are not wired. A guide member 23 for drawing an optical fiber is disposed behind the bottom plate 21 of the case body 1 facing the notch 11 and at the rear end of the case body 1.
[0010]
What is configured in this manner is a case body in which a notch portion 12 is formed in a lateral portion of the bottom plate portion 11 of the drawer tray 1 that can be pulled out to the case body 2 and continues to the rear end edge. Since the optical fiber main body side guide member 22 is provided on the distal end side of the bottom plate portion 21, the drawer tray 1 can be inserted into and removed from the case main body 2 without being interfered by the main body guide member 22.
[0011]
An optical fiber tray-side guide member 13 is provided on the rear side of the bottom plate portion 11 of the drawer tray 1, and the optical fiber is wired between the body-side guide member 22 and necessary for the pull-out distance of the drawer tray 1. The extra length of the optical fiber is included. That is, when the drawer tray 1 is stored in the case main body 2, the tray side guide portion 13 is positioned obliquely behind the main body side guide portion 22, so that when the drawer tray 1 is pulled out, between the guide members 13 and 22. The wired optical fiber is slackened while the main body side guide member 22 is used as a fulcrum, and the tray guide member 13 moves forward in response to the drawer tray 1 being pulled. The tension that causes the
[0012]
Further, the extra length of the optical fiber required for the pull-out distance of the drawer tray 1 is the light wired between the tray-side guide member 13 and the main-body-side guide member 22 provided on the rear side of the bottom plate portion 11 of the drawer tray 1. Since it is included in the fiber, it is not necessary to provide a space for the extra length of the optical fiber in the depth direction of the case body 2, so that it can be mounted on a rack with a shallow depth.
[0013]
【The invention's effect】
As described above, the drawer unit of the present invention has a tray-side guide member and a main-body-side guide member provided on the rear side of the bottom plate portion of the drawer tray so that the extra length of the optical fiber necessary for the drawer distance of the drawer tray is provided. Because it is included in the optical fiber wired between the two, the bellows-shaped protective member for protecting the extra length of the optical fiber is unnecessary, and the optical fiber wiring work is easy, and the depth of the unit The size of the direction can be reduced.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of the present invention with a drawer tray stored therein.
FIG. 2 is a plan view showing the embodiment of the present invention with the drawer tray pulled out.
FIG. 3 is a perspective view showing a tray side guide member and a main body side guide member used in the embodiment of the present invention.
[Explanation of symbols]
1 drawer tray
11 Bottom plate
12 Notch
13 Tray side guide member 2 Case body
21 Bottom plate
22 Main body side guide member

Claims (1)

A notch portion that follows the rear edge is formed on the side of the bottom plate portion of the drawer tray that can be pulled out to the case body, and the optical fiber body side guide member on the front end side of the bottom plate portion of the case body that the notch portion faces. And an optical fiber tray-side guide member provided on the rear side of the bottom plate portion of the drawer tray, and the optical fiber is wired between the two guide members, and the extra length of the optical fiber required for the pull-out distance of the drawer tray is provided. When the drawer tray is housed in the case body, the tray-side guide portion is positioned obliquely behind the body-side guide portion, and when the drawer tray is pulled out, the optical fiber wired between both guide members is slackened. pull, characterized in that shall move to the stored state and symmetrically positioned diagonally forward with the tray guide member to move forward in response to withdrawal of the tray main body side guide member as a fulcrum The unit.

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