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US-12625336-B2 - Multi-cassette fiber distribution frame

US12625336B2US 12625336 B2US12625336 B2US 12625336B2US-12625336-B2

Abstract

A multi-cassette fiber distribution frame for easily withdrawing a desired cassette from a stacked structure of a plurality of cassettes can include a frame whose front surface is open, a plurality of holders provided on the frame at intervals, a plurality of slots formed by the intervals and each including an inlet and an outlet facing the front surface of the frame, and pop-up parts provided on the plurality of holders and configured to be elastically restored toward the inlet and outlet.

Inventors

  • Min Oh LEE
  • Pyoung Gu KIM

Assignees

  • S-MODUL INC.

Dates

Publication Date
20260512
Application Date
20230901
Priority Date
20220915

Claims (6)

  1. 1 . A multi-cassette fiber distribution frame comprising: a frame whose front surface is open; a plurality of holders provided on the frame at intervals; a plurality of slots formed by the intervals and each including an inlet and outlet facing the front surface of the frame; and pop-up parts provided on the plurality of holders and configured to be elastically restored toward the inlet and outlet, wherein the plurality of holders have a plate shape extending from the front surface of the frame toward a rear surface of the frame, and comprise a plurality of guide rails protruding from a surface of the holder facing another holder adjacent to the holder and extending from the front surface of the frame to the rear surface of the frame, and one slot among the plurality of slots is provided between the plurality of guide rails, wherein the pop-up parts each comprise: a push shaft configured to move forward and backward on a rear end of one of the plurality of holders; and an elastic member provided on one of the plurality of holders and configured to apply elastic pressure to the push shaft toward the inlet and outlet, wherein the pop-up parts each further comprise a housing for accommodating the push shaft and the elastic member, wherein the housing is provided with an opening from which a portion of the push shaft protrudes, wherein the push shaft has a cylindrical shape and comprises a sealing member along an outer circumference thereof, a cylinder configured to accommodate the push shaft therein and be in airtight contact with the sealing member is provided in the housing, and the housing is provided with an orifice located between the sealing member and the opening and configured for fluid communication between inside of the cylinder and outside of the housing.
  2. 2 . The multi-cassette fiber distribution frame of claim 1 , wherein at least one of the pop-up parts is provided for each of the plurality of slots.
  3. 3 . The multi-cassette fiber distribution frame of claim 1 , wherein the pop-up parts are provided on opposite surfaces of two adjacent holders to be symmetrical with each other.
  4. 4 . A multi-cassette fiber distribution frame comprising: a frame whose front surface is open; a plurality of holders provided on the frame at intervals; a plurality of slots formed by the intervals and each including an inlet and outlet facing the front surface of the frame; and pop-up parts provided on the plurality of holders and configured to be elastically restored toward the inlet and outlet, further comprising cassettes including a plurality of optical cable connection terminals on front surfaces thereof and configured to be inserted into the plurality of slots, and wherein the pop-up parts apply elastic pressure on the cassettes inserted into the plurality of slots toward the inlet and outlet, and the multi-cassette fiber distribution frame further comprises suppressors provided on the cassettes and the plurality of holders and configured to resist elastic pressure applied by the pop-up parts to suppress movement of the cassettes inserted into the plurality of slots, wherein the suppressors each comprise: a bolt hole formed in a front surface of one of the plurality of holders; and a screw provided on a front end of one of the cassettes and coupled to the bolt hole through a bolt.
  5. 5 . A multi-cassette fiber distribution frame comprising: a frame whose front surface is open; a plurality of holders provided on the frame at intervals; a plurality of slots formed by the intervals and each including an inlet and outlet facing the front surface of the frame; and pop-up parts provided on the plurality of holders and configured to be elastically restored toward the inlet and outlet, further comprising cassettes including a plurality of optical cable connection terminals on front surfaces thereof and configured to be inserted into the plurality of slots, and wherein the pop-up parts apply elastic pressure on the cassettes inserted into the plurality of slots toward the inlet and outlet, and the multi-cassette fiber distribution frame further comprises suppressors provided on the cassettes and the plurality of holders and configured to resist elastic pressure applied by the pop-up parts to suppress movement of the cassettes inserted into the plurality of slots, wherein the suppressors each comprise: a stopping groove formed in one of the plurality of holders; and a lever provided on one of the cassettes and provided with a bump to be caught in the stopping groove, wherein a portion of the lever extends from the front surface of the cassette.
  6. 6 . The multi-cassette fiber distribution frame of claim 5 , wherein the lever is detachably assembled to the cassette.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to and the benefit of Korean Patent Application No. 2022-0116217, filed on Sep. 15, 2022, the disclosure of which is incorporated herein by reference in its entirety. BACKGROUND 1. Field of the Invention The present invention relates to a multi-cassette fiber distribution frame, and more particularly, to a multi-cassette fiber distribution frame that is improved in terms of the convenience in replacing and dissembling/assembling cassettes. 2. Discussion of Related Art In general, as the development of an ultra-high-speed information communication network has accelerated, the types of advanced information communication services have become diverse. Accordingly, an optical distribution device configured to manage and provide an optical cable in a state in which a plurality of optical cables are installed is installed in communication rooms of various buildings or apartments, including a telephone station, to provide Fiber-to-the-Home (FTTH) services. In such an optical distribution device, a stacked structure of a plurality of fiber distribution frames is installed in a rack cabinet, and a plurality of cassettes with a plurality of optical cable connection terminals are inserted and installed in each of the fiber distribution frames. Here, because the size of the rack cabinet is determined according to an international standard, fiber distribution frames are required to be compact for connection of as many optical cables as possible to the rack cabinet of the determined size and are required to be configured to install as many cassettes as possible therein. To reflect these requirements, there are many environments in which cassettes are densely installed with little clearance in a multi-cassette fiber distribution frame in which a plurality of cassettes are installed. However, when cassettes are densely installed without clearance, it is difficult to secure sufficient space for a worker to grip a cassette with his or her hand to replace the cassette with another or dissemble or assemble cassettes, thus causing inconvenience in replacing or dissembling/assembling cassettes. In particular, it is very difficult to withdraw an intermediate cassette from a stacked structure of a plurality of cassettes. SUMMARY OF THE INVENTION To address at least some of the above-described problems of the related art, the present invention is directed to providing a multi-cassette fiber distribution frame for easily withdrawing a desired cassette from a stacked structure of a plurality of cassettes. The multi-cassette fiber distribution frame includes a frame whose front surface is open, a plurality of holders provided on the frame at intervals, a plurality of slots formed by the intervals and each including an inlet and an outlet facing the front surface of the frame, and pop-up parts provided on the plurality of holders and configured to be elastically restored toward the inlet and outlet. In an embodiment, the pop-up parts may each include a push shaft configured to move forward and backward on a rear end of one of the plurality of holders, and an elastic member provided on one of the plurality of holders and configured to apply elastic pressure to the push shaft toward the inlet and outlet. In an embodiment, the multi-cassette fiber distribution frame may further include cassettes including a plurality of optical cable connection terminals on front surfaces thereof and configured to be inserted into the plurality of slots. The pop-up parts may apply elastic pressure on the cassettes inserted into the plurality of slots toward the inlet and outlet. The multi-cassette fiber distribution frame may further include suppressors provided on the cassettes and the plurality of holders and configured to resist elastic pressure applied by the pop-up parts to suppress movement of the cassettes inserted into the plurality of slots. The suppressors may each include a bolt hole formed in a front surface of one of the plurality of holders, and a screw provided on a front end of one of the cassettes and coupled to the bolt hole through a bolt. In another embodiment, the suppressors may each include a stopping groove formed in one of the plurality of holders, and a lever provided on one of the cassettes and provided with a bump to be caught in the stopping groove, wherein a portion of the lever extends from the front surface of the cassette. In another embodiment, the lever may be detachably assembled to the cassette. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing exemplary embodiments thereof in detail with reference to the accompanying drawings, in which: FIG. 1 is a perspective view of a multi-cassette fiber distribution frame according to an embodiment of the present invention; FIG. 2 is a front view of the multi-cassette fiber