JPH0585090U - Back panel bending prevention back side reinforcement structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Even when the desired number of optical fiber connection packages are mounted, the back panel is prevented from bending and the connectors on both the package side and the back panel side are completely mated and connected to ensure a secure connection. An electronic circuit unit that enables high-speed communication is obtained. [Structure] The rear side of the unit frame 1 having front and rear surfaces opened,
By closing the back panel 2 having a plurality of back panel side connectors 8 and inserting the optical fiber connecting package 4 having the package side connector 6 at one end from the front side of the unit frame 1, When the connectors 8 and 6 are fitted and connected, and the front cover 3 presses the optical fiber connecting package 4 toward the back panel 2 and closes the opening surface of the unit frame 1, a backing force is applied by the pressing force. In order to prevent the panel 2 from bending, a plurality of housing fixtures 11a are arranged horizontally on the back surface of the back panel 2 so as to extend horizontally.
The back panel back surface reinforcing metal member 12 is attached in a vertical direction so as to be orthogonal to 11b and 11c.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, when a plurality of optical fiber connecting packages are mounted in an electronic circuit unit in a communication device, the back panel provided in the electronic circuit unit frame is pressed by the optical fiber connecting package. The present invention relates to a back side reinforcing structure for preventing the pack panel from bending, which reinforces the occurrence of bending from the back side.

[0002]

[Prior Art]

 FIG. 5 is an overall perspective view showing the structure of a conventional electronic circuit unit, and FIG. 6 is a side view of FIG. 5 and 6, reference numeral 1 denotes a unit frame of an electronic circuit unit that constitutes a communication device, and has a structure in which the front side and the back side are opened. 2 is a back panel attached so as to close the back side of the unit frame 1, and 3 is a front cover attached so as to close the front side of the unit frame 1, whereby the electronic circuit unit is box-shaped. Formed in.

Reference numeral 4 denotes an optical fiber connection package which is detachably mounted in the electronic circuit unit in a state where a plurality of the electronic circuit units are stood upright. The optical fiber connection package 4 can be inserted and removed from the front side where the front cover 3 is attached. Reference numeral 5 denotes an optical module fixed to one side surface of the optical fiber connecting package 4, and 6 denotes upper and lower two-stage package-side connectors attached along one end of the optical fiber connecting package 4. The package side connector 6 is connected via an optical fiber 7 and is provided for transmitting an optical signal from the optical module 5 to the optical fiber 7.

Reference numeral 8 denotes a plurality of back panel-side connectors provided on the back panel 2. When the optical fiber connecting package 4 is mounted in an electronic circuit unit, the optical fiber connecting package 4 is The upper and lower stages are horizontally arranged side by side with a predetermined pitch so as to fit with the package side connector 6. Reference numeral 9 is a reinforcing metal member provided so as to protrude inside the back panel 2, and does not bend in the direction in which the back panel 2 protrudes in the back surface side in the gap between the two upper and lower back panel side connectors 8. , It extends horizontally to the full width of the back panel 2.

When mounting the optical fiber connecting package 4 with the above configuration, the electronic circuit unit is first closed by mounting the back panel 2 on the back side thereof, and is opened on the front side without mounting the front cover 3. I left it as it was. In this state, as shown in FIG. 5, the optical fiber connecting package 4 is erected so that the package side connector 6 is located at the front end, and it is not shown in the drawing from the front opening side of the unit frame 1 according to a predetermined insertion position. Insert it into the unit frame 1 along the insertion rail on the bottom.

When the package side connector 6 at the tip of the optical fiber connecting package 4 thus inserted comes into contact with the back panel side connector 8 attached to the back panel 2 of the unit frame 1, further pressure is applied. Then, the connector 6 on the package side is inserted into the connector 8 on the back panel side, whereby they are fitted and electrically connected. By repeating this, when the predetermined number of optical fiber connecting packages 4 are all inserted into the unit frame 1, the front cover 3 is attached so as to close the front side of the unit frame 1 which is open.

At this time, the optical fiber connecting package 4 is always biased by a biasing force A to the front side of the unit frame 1 in order to reliably transmit a signal from the mounted optical module 5. It has a working structure. In other words, this biasing force A causes the front cover 3 to be attached so as to close the front surface of the unit frame 1, so that the optical fiber connecting package 4 is pressed against the back panel 2 side by the front cover 3 and the package side connector is attached. This is because the structure for ensuring the fitting of the connector 6 and the back panel side connector 8 can be obtained. By doing so, conventionally, the package side connector 6 and the back panel side connector 8 of the unit frame 1 are securely fitted to each other and the electrical connection is secured.

[0008]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional structure, the urging force A to the front cover by the optical fiber connecting package is pressed to the back panel side by the front cover, so that the pressing force is in the opposite direction, that is, the back panel direction. B is produced, and the number of packages of the optical fiber connecting package increases, and the pressing force B toward the back panel increases by the number of packages. For this reason, the back panel is bent by the pressing force B so as to project to the back side, and as a result, the mating of the package side connector and the back panel side connector becomes uncertain, and the package is provided in the optical fiber connecting package. There was a problem that transmission to the optical module became impossible.

Further, the back panel is provided with a reinforcing metal member extending in the horizontal direction in order to prevent bending. However, with this reinforcing metal member alone, an optical fiber connecting package mounted in an electronic circuit unit is provided. When the number of sheets increases, it becomes impossible to prevent bending. For this reason, even if there is an actual mounting space, it is not possible to mount any more, and the number of mountable packages is practically limited, and it becomes impossible to mount the desired number of optical fiber connection packages. there were. The present invention has been made to solve the above-mentioned problems, and prevents the back panel from bending even when a desired number of optical fiber connecting packages are mounted on an electronic circuit unit, and prevents the back panel from bending. The purpose is to provide a superior back panel flexure prevention structure for the back panel of electronic circuit units that achieves high speed and high density by ensuring the signal transmission to the optical module by completely mating both side connectors. And

[0010]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention closes the back side of a rectangular unit frame having front and rear surfaces opened with a back panel provided with a plurality of back panel side connectors in a predetermined arrangement, and at one end of the package side. By inserting the optical fiber connection package equipped with a connector from the front opening side of the unit frame, the back panel side connector and the package side connector are fitted and connected, and the optical fiber connection is made by the front cover. In the back panel reinforcing structure for preventing back panel bending, which prevents bending of the back panel due to the pressing force of the optical fiber connecting package when the opening surface of the unit frame is closed while pressing the package for the back panel toward the back panel, For housing fixtures that extend horizontally on the back side of the panel and are arranged in parallel. Vertically to intersect each, in which it was decided to Fit the back panel back reinforcing bracket.

[0011]

[Action]

 According to the configuration described above, after inserting and mounting a plurality of optical fiber connecting packages into the unit frame, the front cover is attached to the front opening face by pressing the optical fiber connecting packages toward the back panel. When it is closed, the back panel is pressed through the optical fiber connecting package by the pressing force when the front cover is attached. On the back side of this back panel, a plurality of housing fixtures for connecting cables to the back panel side connector are attached in the horizontal direction. Since the back panel back surface reinforcing metal fittings are attached so as to extend in the direction, the back panel back surface reinforcing metal fittings can be fixed by fixing the horizontally extending housing fittings so as to connect them vertically. This prevents the back panel from bending. Therefore, a desired number of optical fiber connecting packages can be mounted in one electronic circuit unit, and high-speed communication without connection failure is possible.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of the entire back side of the electronic circuit unit of this embodiment, and FIG. 2 is a side view of FIG. 1 and 2, 1 is a rectangular unit frame, 2 is a back panel that closes the back side of the unit frame 1, 3 is a front cover that covers the front side of the unit frame 1, and 4 is inside the unit frame 1. The optical fiber connecting package 6 is inserted and mounted in the optical fiber connecting package, 6 is a package side connector attached to one end of the optical fiber connecting package 4, and 8 is the back panel 2 for mating connection with the package side connector 6. The back panel-side connector, 9 is a reinforcing metal fitting that has been conventionally provided to reinforce the flexure of the back panel 2, and these have substantially the same structure as the conventional example. Therefore, the same reference numerals as in the conventional example are given here and the description thereof is omitted.

Reference numeral 10 denotes a housing provided on the back surface side of the back panel 2 via housing attachments 11 a, 11 b, 11 c. The housing 10 is arranged on the inner surface side of the back panel 2. The arrangement corresponds to the arrangement of the side connector 8 and is for connecting a cable (not shown) to the back panel side connector 8. The housing fixtures 11a, 11b, 11c are provided so as to extend in the horizontal direction along the upper and lower sides of the back panel 2 and the positions of the reinforcing metal fittings 9 as shown in FIGS. There is.

Reference numeral 12 is a back panel rear surface reinforcing metal fitting which is attached by extending vertically in a direction orthogonal to these three parallel housing mounting tools 11a, 11b, 11c, which are respectively attached to the housing mounting tools 11a, 11b, 11c. It is fixed via screws 13, and the mounting position of this back panel back surface reinforcing metal fitting 12 interferes with the mounting position of the optical fiber connecting package 4 and other packages in the design stage of the unit frame 1 and the back panel 2 in advance. Set it in the specified position so that it does not cause Therefore, the screw holes 2a, 2b, 2c are formed in the back panel 2 at the position corresponding to the set mounting position of the back panel back surface reinforcing metal fitting 12, and the unit frame 1 is provided with the fixing holes 1a and 1b. A fixing hole 9a is formed in the reinforcing metal member 9 so that they can be overlapped with each other when the electronic circuit unit is assembled, and the screw 13 can be penetrated to be screwed and fastened.

Therefore, the optical fiber connecting package 4 is inserted from the front opening side of the unit frame 1 having the back panel 2 attached to the back side, and the package side connector 6 of the optical fiber connecting package 4 is attached to the back panel. The operation of fitting and connecting to the back panel side connector 8 arranged in 2 is repeated, and after mounting a desired number of them, the front cover 3 is attached and the back panel 2 is The pressing force B is received via the fiber connecting package 4. However, the pressing force B is such that the back panel back surface reinforcing metal fitting 12 attached to the back surface side of the back panel 2 is orthogonal to the housing attachments 11a, 11b, 11c on the back surface side of the back panel 2 and Since the back panel 2 is fixed in the vertical direction so as to be connected, the pressing force B for bending the back panel 2 is sufficiently absorbed by the back panel back surface reinforcing metal member 12, and the back panel 2 is prevented from bending. It

The shape of the back panel back surface reinforcing metal member 12 is not limited to the structure shown in FIGS. 1 and 2, but may be the structure shown in FIGS. 3 and 4 below. 3 is a perspective view of the entire back side of an electronic circuit unit showing another embodiment of the back panel rear surface reinforcing metal fitting, and FIG. 4 is a side view of FIG. 3. The structure of the electronic circuit unit in this embodiment is as shown in FIG. Also, as shown in FIG. 4, the structure is the same as that of the above-mentioned embodiment except for the back panel rear surface reinforcing metal fittings.

In FIGS. 3 and 4, reference numeral 14 is a back panel back surface reinforcing metal fitting, which has a substantially L-shape, and, like the back panel back surface reinforcing metal fitting 12, has housing mounting members 11 a, 11 b, 11 c. They are arranged orthogonally to each other in the vertical direction, and one end piece 14a thereof is attached to the back panel 2 and the unit frame 1 by the screw 13 via the housing attachments 11a, 11b, 11c. As a result, even if a desired number of optical fiber connecting packages 4 are mounted in the electronic circuit unit, the L-shaped back panel rear surface reinforcing metal fitting 14 is used for connecting the optical fiber by the front cover 3 as in the above embodiment. The package 4 sufficiently absorbs the force B applied to the back panel 2 to prevent the back panel 2 from bending.

[0018]

[Effect of the device]

 As described above, according to the present invention, the back side of a rectangular unit frame having front and rear surfaces opened is closed by a back panel having a plurality of back panel side connectors in a predetermined arrangement, and a package is attached to one end. By inserting an optical fiber connecting package equipped with a side connector from the front opening side of the unit frame, the back panel side connector and the package side connector are fitted and connected, and the front cover is used to In the back panel bending prevention structure of the back panel that prevents the back panel from bending due to the pressing force of the optical fiber connecting package when the opening surface of the unit frame is closed while pressing the fiber connecting package toward the back panel, A plurality of housings are arranged directly in parallel on the back side of the back panel and extend horizontally. Vertically and so, it was to put take back panel back reinforcing bracket.

Therefore, even if a desired number of optical fiber connecting packages are inserted and mounted in the electronic circuit unit and then a front cover is attached so as to press the optical fiber connecting packages toward the back panel, Since the back panel back reinforcing metal fittings are attached to the back side of the back panel, the back panel is prevented from bending, and the back panel can be maintained in a horizontal state. Can be mated and connected, and complete signal transmission is possible between the two.

Further, conventionally, since the back panel is bent, the number of optical fiber connecting packages to be mounted in one electronic circuit unit is practically limited, and the optical fiber connecting packages are mounted. Even if there is a space, the optical fiber connection package cannot be mounted in that space, and the remaining optical fiber connection packages that could not be mounted are mounted in another electronic circuit unit prepared. However, since the back panel can be prevented from bending by attaching the back panel rear surface metal fitting, it is not necessary to limit the number of packages for connecting optical fiber, and it is possible to mount the desired number of packages. It has become possible to support high-speed communication with a single electronic circuit unit.

[Brief description of drawings]

FIG. 1 is an overall back side perspective view of an electronic circuit unit of this embodiment.

FIG. 2 is a side view of FIG.

FIG. 3 is an overall back side perspective view of an electronic circuit unit of another embodiment.

FIG. 4 is a side view of FIG.

FIG. 5 is an overall perspective view showing the structure of a conventional electronic circuit unit.

FIG. 6 is a side view of FIG.

[Explanation of symbols]

 1 Unit Frame 2 Back Panel 3 Front Cover 4 Optical Fiber Connection Package 6 Package Side Connector 8 Back Panel Side Connector 9 Reinforcing Metal Fittings 11a, 11b, 11c Housing Fixture 12 Back Panel Rear Surface Reinforcing Metal Fitting 13 Screw 14 Back Panel Rear Surface Reinforcing Metal Fitting

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenichi Nakano, 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Hideaki Yajima, 1015 Kamitadanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Within the corporation

Claims (1)

[Scope of utility model registration request] 1. An optical fiber having a back side of a rectangular unit frame having front and rear surfaces opened, which is closed by a back panel having a plurality of back panel side connectors in a predetermined arrangement, and a package side connector at one end. By inserting the connection package from the front opening side of the unit frame, the back panel side connector and the package side connector are fitted and connected, and the front cover moves the optical fiber connection package in the back panel direction. In a back panel bending prevention back surface reinforcement structure that prevents the back panel from bending due to the pressing force of the optical fiber connecting package when the opening surface of the unit frame is closed while pressing, in the horizontal direction on the back surface side of the back panel. In the vertical direction so that it is orthogonal to the housing fixtures , Back panel back bending side reinforcement structure characterized by attaching back panel back surface reinforcing metal fittings.