JP2003198163A - Electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate recognition of optical connectors and fixing/removing work thereof by arranging the optical fibers of external optical connectors being connected with a backboard on the back of a unit housing in good order. <P>SOLUTION: In the electronic device being plugged in through a connector by inserting a plurality of printed board units in parallel with respect to the backboard 21 of a unit housing 11, external optical fibers being inserted into and connected with a plurality of optical connectors 24-1,..., 24-16 arranged longitudinally in correspondence with the printed board units on the back side of the backboard are supported, respectively, by first holders 41-1,..., 41-16 provided on the back side of the unit housing. Since the optical fibers are arranged without crossing each other when viewed from the back side, fixing/ removing work of connectors can be carried out accurately and readily. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention collectively refers to various types of communication devices, information processing devices, and other measuring devices as simply electronic devices. When applied to these electronic devices, suitable optical fibers for signal transmission are arranged in order. By arranging them, the invention relates to facilitating recognition and attachment / detachment work of an optical connector connected to an electronic device. In this specification, a single-core optical fiber line and an optical fiber cable including a plurality of optical fiber lines are collectively referred to as an optical fiber.

In recent years, as the capacity and speed of electronic devices have increased, the number of signal lines made up of optical fibers connected to the electronic devices has tended to increase more and more. When connecting such a signal line to a device, it is required to improve workability and increase efficiency of signal line addition work or removal work, connection replacement work, etc. due to the addition or abolition of lines.

[0003]

2. Description of the Related Art As shown in the schematic perspective view of the main part of the electronic device shown in FIG. 12, a printed circuit board unit (not shown) made of a printed wiring board is provided inside a metal unit housing 1. A large number of them are inserted and mounted in parallel from the front surface side of the unit housing 1, and are configured to be plugged in by a connector to a back board formed of a printed wiring board inside the rear surface of the unit housing 1. Further, the single-core optical connector 4 at the tip of the optical fiber 3 is inserted and connected to the optical connector of the backboard from the insertion hole 2 on the back side of the unit housing 1.

On the back side of the unit housing 1, supporting metal fittings 5 for supporting various wirings are provided in a horizontal direction so as to project, and a plurality of frame-shaped holders made of synthetic resin are formed at predetermined intervals. 6 and the holder mounting bracket 7 are mounted in a suspended state, and the holder mounting bracket 7 also has a frame-shaped holder 6
Are provided at two locations, upper and lower. A frame-shaped holder 6 provided on the support fitting 5 vertically supports a bundle of a plurality of optical fibers 8 which are also connected to other electronic devices (not shown). The frame-shaped holder 6 of the mounting bracket 7 has an extra length portion 9 of a plurality of optical fibers 8.
Is supported so as to have a predetermined diameter and is extended in the vertical direction.

These wirings include the optical fiber 8 and wirings for electric signal lines and power lines. Therefore, although not shown, on the back side of the unit housing 1, a large number of wirings for electrical system connection are also introduced and connected to the backboard. The electronic device is configured by mounting a plurality of unit housing units as described above on a rack device standing upright in the vertical direction, or by mounting and accommodating it in a cabinet equipped with a rack. When the external communication cable is introduced into the electronic device, an optical cable composed of a large number of optical fibers is introduced, and the outer coating of the optical cable is peeled off at the introduction portion and the optical cable is formed into a bundle.

Conventionally, such an optical fiber bundle is conventionally drawn around and supported by an extra length portion 9 formed on the back surface of the unit housing 1 or the like, and is connected by the optical connector 4 from the rear surface side of the unit housing. There is. At this time, without concentrating the lines in groups of printed circuit board units,
The extra length of the optical fiber 8 is supported as an optional extra length portion 9, and the optical connector 4 is connected from the rear surface of the device.

When the number of optical fibers 8 introduced into the apparatus is relatively small, even if the optical connector 4 is prioritized without concentrating in such a group,
The workability at the time of newly installing the equipment and the work such as addition and removal of the optical fiber were relatively rare or hardly caused.

[0008]

Since a large amount of optical fibers have been introduced into the recent electronic devices, it is required to efficiently accommodate the optical fibers in the device. ing. For this reason, there is a need for a configuration that has not been considered in the past, such as concentrating optical fibers, for example, printed circuit board units on a group-by-group basis and accommodating them inside the device when the device is newly installed. Furthermore, in order to efficiently perform the work associated with the addition or removal of optical fibers that occur after installation, it is necessary to group the lines in groups.

Conventionally, since the optical fiber path is not in a group unit and the connector connection to the rear surface of the unit is prioritized, the accommodation position of the extra length is supported at an arbitrary position such as the extra length portion of the rear surface of the unit casing. Therefore, as the amount of optical fibers to be accommodated increases, the optical fibers and the like are congested on the rear surface side of the unit housing as shown in FIG. 12, and the above work is hindered.

The present invention solves the above-mentioned problems of the prior art and makes it easy to recognize and attach / detach an optical connector by orderly aligning an external optical fiber connected to a backboard on the rear surface of a unit housing. Is the subject of the invention.

[0011]

The first means, which is the gist of the constitution of the present invention for solving the above-mentioned problems, is to provide a backboard made of a printed wiring board in a unit casing with respect to the backboard. An electronic device in which a plurality of printed circuit board units are inserted and mounted in a parallel state and plugged in by a connector, wherein a plurality of optical connectors are arranged in a row corresponding to each printed circuit board unit unit on the back side of the backboard. It is an electronic device in which an optical fiber of an optical connector of an external optical fiber to be inserted and connected is supported by a first holder provided on the rear surface side of a unit housing so as to correspond to each printed board unit.

According to the first means, the optical fibers connected to each printed board unit are collectively supported by the corresponding first holders on the back surface side, so that the unspecified optical fibers are combined. As a result, the optical fibers, that is, the optical connectors can be identified with certainty, and the attachment / detachment work can be easily performed. A second means of the present invention is an electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector. The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are arranged in a row corresponding to the printed board unit unit on the back side of the backboard is printed on the back side of the unit housing. The first holder, which is supported adjacent to the first holder provided corresponding to each unit
Is an electronic device in which an optical fiber supported by the holder is supported by a second holder.

According to the second means, the optical fibers connected to the plurality of printed board units are concentrically supported by the respective first holders on the back surface side for each printed board unit, so that adjacent printed boards can be connected. A space can be provided between the optical fibers of the unit, so that the optical fibers, that is, the optical connector can be surely identified, and the attachment / detachment work can be easily performed.

The optical fibers supported by the first holder are collectively supported by the second holder by combining a plurality of adjacent optical fibers, and the unspecified optical fibers can be arranged in a more orderly manner than the unspecified optical fibers. . A third means of the present invention is an electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector. The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are arranged in a row corresponding to the printed board unit unit on the back side of the backboard is printed on the back side of the unit housing. An optical fiber supported by a first holder provided corresponding to a unit unit and supported by an adjacent first holder, and an optical fiber supported by a second holder and supported by an adjacent second holder. Is an electronic device that allows the third holder to be supported by the third holder.

According to the third means, the optical fibers connected to the optical connectors vertically arranged on the back side of the backboard corresponding to each printed board unit are provided on the corresponding back side. By being supported by the first holder, a gap is formed between the optical fiber connected to the adjacent printed board unit and the optical connector can be easily and surely identified.

The optical fibers supported by the adjacent first holders are supported by the second holder, and the optical fibers supported by the adjacent second holders are supported by the third holder. The optical fibers can be arranged and supported in an orderly manner.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION A specific embodiment of the present invention based on the gist of the invention will be described in detail below with reference to the drawings. It should be noted that, in order to ensure understanding and ease of understanding, similar parts are denoted by the same reference numerals throughout the drawings. FIG. 1 is a front view external view of a unit housing 11 of an electronic device according to the present invention.
A plurality of cooling air intake openings 13 are laterally formed in the upper part of a plurality of stages, and mounting brackets 15 having mounting holes 14 for mounting to a rack device are projected on both left and right side surfaces. It is provided. The main constituent parts of the unit housing 11 are made of a metal plate material.

FIG. 2 is a front view showing the state in which the front cover 12 is removed. A plurality of printed board units 16 are inserted and mounted in the left and right side by side in a parallel state on the lower side, and left and right are attached and detached on the upper side. A cooling fan unit 18, which is attached and fixed by a fastening fastener 17, is inserted and mounted. 3 shows the printed board unit 16 from the state of FIG.
Is shown, and the front side of the backboard 21, which is a printed wiring board on the back side of the unit housing 11, is visible.

On the backboard 21, from the top,
A small electric connector 22, a multi-pole electric connector 23, an optical connector 24, and a lower multi-pole electric connector 25 are arranged and mounted in tandem, and 19 printed board units 16 are mounted in parallel in the left-right direction. It has become so. The optical connector 24 is actually an adapter for connecting the optical connector, and one optical connector 24 is provided with two stages in which eight individual single-core optical connectors can be inserted in parallel from the rear side in the vertical direction. Has been. Therefore, 16 optical fibers can be connected to the printed board unit 16. The optical connector 24 is provided in one stage at the two central portions, and the optical connector 24 is not provided in the printed board unit portion at the right end in the figure, but a multi-pole electric connector 23 is provided instead. There is.

Corresponding to the parts where the printed circuit board units 16 are inserted and mounted, guide grooves 26 are formed in the upper and lower surfaces of the unit casing 11 to guide the ends of the respective printed wiring boards in the front-rear direction. It is formed to face each other. Figure 4
Shows a rear view of the unit housing 11 as seen from the rear side, and a fan 27 of the cooling fan unit 18 for laterally discharging cooling air is arranged in the upper part thereof.
A wiring terminal board 28 and second supporting shelves 29 extending in the left and right lateral directions are provided below the wiring terminal board 28.

Since there is a back plate 31 constituting the unit housing 11 on the back side of the back board 21, the back board 21 cannot be seen directly, and the optical connector 24 is inserted through the through hole of the back plate 31. It is visible through a peek. Further, the electric connector 32 is also visible at the lower part thereof, and the first support shelf 33 extending in the left and right lateral directions is provided in the middle part thereof.
And the wiring support shelf 34 is shown at the bottom.

FIG. 5 is an external view of the unit casing 11 as seen from the side, where the left side in the figure is the front side and the right side is the back side. The upper surface 35 of the cooling fan unit 18 is an inclined surface that rises from the front surface side to the rear surface side, so that the cooling air flowing through the lower printed board unit 16 portion is sucked up by the fan 27 and discharged to the rear surface side. Is configured. Therefore, the air intake opening 13 of the front cover 12 described with reference to FIG. 1 is an opening for intake of cooling air into the upper unit casing (not shown).

The portion indicated by the dotted line on the back side is the backboard 21, and the dotted line portions facing the upper and lower sides of the front side of the backboard 21 for inserting and mounting the printed board unit 16 will be described with reference to FIG. 2 is the upper and lower surfaces on which the guide groove 26 is formed. The part of the backboard 21 that projects in the front-back direction, which is the left-right direction in the figure, is the optical connector 2
4, and the multi-pole electrical connectors 23 and 25 are not shown because they are complicated.

The first support shelf 33 is attached to the lower end of a side plate 36 extending in the vertical direction from the left and right side surfaces of the unit housing 11 and extending in the back direction. This first
6, in which only the support shelf 33 of FIG. 6 is illustrated, FIG. 6A is a rear view and FIG. 6B is a side view. Note that the first support shelves 33 have a corresponding positional relationship as shown in the description with reference to FIG.

In the first support shelf 33, the front side of a shelf plate portion 37 having an L shape in a side view is folded back to form a reinforcing portion and a protective portion, and is bent so that both left and right side surfaces 38 are parallel to each other. The side surface 38 is attached to the side surface plate 36. A frame-shaped first holder 41 is fitted to the upright surface 39 on the back side of the shelf portion 37, and as shown in FIG. (A), four pieces are closely attached to each other, and a total of 16 pieces of four pieces are provided. It is installed.

Referring to the principal part drawing of FIG. 7 showing the attachment of this first holder 41 to the first support shelf, the upright surface 3
9 is formed with parallel notches 42 having a narrow width on the opening side at a predetermined interval, and the first holder 41 made of a synthetic resin molded product having elasticity is press-inserted to restore the elastic deformation, thereby cutting. It is attached in the illustrated state so that it is locked to the stepped portion of the notch 42 and does not come out.

One side of the first holder 41 is a locking piece 44 that closes the opening portion 43 of the frame-shaped holder to the position shown by the solid line and is elastically released to the position shown by the chain double-dashed line in the arrow direction. Can be bent as much as possible. Locking piece 44
The distal end portion of the is formed with a releasing projection 45 that can be released by hooking and bending a finger, and an engaging projection 46 that is locked so as not to open naturally in the closed state. Therefore, by releasing the locking piece 44, it is possible to freely insert or take out a wire rod such as an optical fiber or electric wiring from the holder.

Referring again to FIG. 5, the upper portion of the side plate 36 is formed with an arm portion 47 extending and projecting to the back side, and the second support shelf 29 is attached between the left and right sides of the arm portion 47. ing. Referring to FIG. 8 showing only the second support shelf 29, FIG. 8A is a plan view and FIG. 8B is a side view. The second support shelves 29 have a corresponding positional relationship as shown in the description with reference to FIG.

The second support shelf 29 is a shelf plate portion 48 having an L shape in a side view, and a standing surface 49 on the front side is a holding portion which also serves as a reinforcement. Square holes 5 forming a grid pattern on the shelf plate surface 51
2 are formed, and as shown in FIG. 7A, the second holders 53 each having a frame shape are fitted to the left side in the drawing as shown in FIG. Installed. In addition, the left and right side surfaces 54 are bent in parallel with each other, and by the side surface 54 portions, as shown in FIG.
It is attached to the side plate 36 and the arm portion 47 as shown in FIG.

The second holder 53 has the same basic structure as the first holder 41 described with reference to FIG. 7, and is different only in its large size. Therefore, the description here will be made. Will be omitted. Two third holders 55 are vertically mounted in parallel on the left end of the shelf portion 48 in the figure. FIG. 9 shows the third holder 55.
With reference to the front view shown in FIG. 7A and the plan view shown in FIG. 7B, a main body portion 56 made of a synthetic resin molded product having elasticity and having a U-shape in front view, and a main body portion 56. And a movable member 58 that fits in both leg portions 57 and is movable in the vertical direction.

A screw insertion hole 59 is formed in the center of the bottom of the main body 56, and a protrusion 61 is formed at a position offset from the center, and both legs 57 are shaped like a square V in plan view. Are formed to face each other, and a serrated engagement stepped portion 62 is horizontally formed in multiple stages on the intermediate concave surface thereof.
Further, one of the legs 57 has an open upper portion and the other upper portion is closed.

Both end portions of the movable member 58 are fitted in the V-shaped recesses of the leg portion 57 from both sides and can be vertically moved by being guided by the leg portion 57. 6
By moving while engaging with 2, it is possible to move easily in the downward direction, but in the state in which it cannot move in the upward direction by engaging with the serrated portion. In order to move the movable member 58 upward, by pinching and pressing the central portion from both sides, the wall surfaces on the front side in the figure among the wall surfaces on both side surfaces are bent and deformed, centering on the connecting portion of the middle portion of both end portions. Since the tip end portion expands like a lever and the engagement with the engagement stepped portion 62 is released, it is possible to move freely in that state. It is restored by releasing the hand at the required position, and the re-engageable state is obtained.

When the movable member 58 is moved to the uppermost position, one of the movable members 58 is disengaged from the open end of the leg portion 57 and the other is locked by the closed portion and cannot be disengaged. Since the upper part of the main body 56 is opened, the wire rod such as the optical fiber or the electric wiring can be freely inserted into or taken out of the holder.

The fact that the position of the movable member 58 can be set to an arbitrary position with respect to the main body 56 means that the wire rod is restrained from moving or the like by setting a proper pressure contact state in accordance with the amount of various wire rods in the holder, so that the wire is aligned. Is what you can do. To attach the third holder 55 to the shelf portion 48, the shelf portion 4
The protrusion 61 is fitted into the positioning hole 63 of No. 8 and the countersunk screw 65 is inserted into the screw insertion hole 59 of the main body 56 into the screw hole 64 and screwed into the screw hole 64 to be tightened to be fixed in the illustrated positioning state. be able to.

The third holder 55 is the second holder 53.
In contrast to this, the size is set to be large as shown in FIG. 8, but this is necessary for the reason described below. Next, the relationship between the printed board unit 16 and the backboard 21 will be described in detail with reference to the side view of the main part of FIG. 10. The printed board unit 16 has an intermediate portion omitted to shorten the front-back direction. The electronic parts and the like that form the circuit are also omitted in the drawing, the vertical direction of the backboard 21 is also omitted, and the relationship with the unit housing 11 is also omitted for ease of understanding of the description. Please understand that it is done.

A pair of lever type insertion / removal levers 71 for engaging with the opening end of the unit casing 11 and inserting / removing are attached above and below the front side of the printed board unit 16. On the back side, in order from the top, the electrical connector 7 for plug-in connection with the electrical connector 22 of the backboard 21.
2. A multi-pole electrical connector 73 that is plug-in connected to the same multi-pole electrical connector 23, an optical connector 75 that is plug-in connected to the optical connector 24, and a multi-pole that is plug-in connected to the lowest multi-pole electrical connector 25. An electrical connector 76 is mounted.

Referring also to the perspective view of the optical connectors 24 and 75 specifically showing the main part of FIG. 11, the optical connector 24 on the backboard 21 side is a single-core optical fiber from the rear side. It is a connector housing 78 capable of inserting and holding a plurality of connectors 77 and holding it, and is also known as a connector housing 78 capable of inserting and holding eight maximum single-core optical connectors 77 in the vertical direction. Connector 77
Can be removed.

Optical connector 7 on the printed board unit 16 side
Reference numeral 5 denotes a connector housing 82 capable of inserting and holding a plurality of single-core optical connectors 81 from the front side and holding the same, and is capable of inserting and holding eight maximum single-core optical connectors 81 in the vertical direction. It is publicly known, and the optical connector 81 at an arbitrary position can be detached if necessary. By inserting these optical connectors 24 and 75 and making a plug-in connection, the end faces of the optical fiber core wires supported and fixed to the ferrules at the center of both connectors are brought into precise contact with each other on the same axis for optical connection. However, since this is also well known, the illustration and detailed description thereof will be omitted here.

In the above structure, the route of laying the optical fiber in the electronic device of the present invention will be described below. First, referring to FIG. 5, referring to FIGS. 10 and 11 inserted in the optical connector 24 of the backboard 21. All the optical fibers 83 connected to the single-core optical connector 77 of the description are inserted and supported in the first holder 41 of the first support shelf 33. The order of this insertion is as follows. Depending on the combination.

That is, as shown in FIG. 4, the optical connector 2 mounted in each printed circuit board unit 16 unit.
4 in order from the left side as shown in the drawing 24-1 to 24-16
The upper and lower units are denoted by the reference numerals, and the first holders positioned so as to correspond to the respective back sides are also arranged in order from the left side in the drawing with reference numerals 41-1 to 41-16. The plurality of optical fibers 83 of the second optical connector 24-1 are connected to the first first holder 41-1 and the second optical fiber 83.
The plurality of optical fibers 83 of the 16th optical connector 24-2 are arranged in the same manner as the second holder 1 of the second holder 24-2. 16th first holder 24-
The combination of 16 and 16 is inserted and supported as shown in FIG.

The optical fiber 83 of the optical connector 24-8 'connected to the printed board unit 16 in the central portion in FIG.
In combination with the optical fiber 83 of the eighth optical connector 24-8, the eighth optical connector 24-8 is inserted and supported in the eighth first holder 41-8. Similarly, the optical fiber 83 of the optical connector 24-9 'is also inserted and supported in the ninth first holder 41-9 in combination with the optical fiber 83 of the adjacent ninth optical connector 24-9.

By doing so, the plurality of optical fibers 83 viewed from the rear side are vertically inserted into and supported by the respective first holders 41 corresponding to each printed board unit 16 unit as shown in FIG. Since it is parallel to the direction,
The optical fibers 83 of the adjacent printed board units 16 are clearly separated from each other, and a space is formed in the left and right directions thereof.

The bundle of the optical fibers 83 thus arranged by the first holder 41 is arranged in the second holder of the upper second support shelf 29 from the first support shelf 33 as shown in FIG. It is inserted into and supported by 53, and this is also made by the following combinations. Since the bundle of optical fibers 83 focused by the first holder 41 is complicated in the drawing, the path is shown as a single line.

As shown in FIGS. 8 and 4, with respect to the second holder 53 as well, the first holder is set to 5 from the left side in the drawing.
As 8-1, the 8th number is sequentially assigned as 53-8 and a code is given. Regarding the bundle of optical fibers 83 inserted and supported in the first holder 41, the optical fiber 83 bundles of the first and second first holders 41-1 and 41-2 are replaced by the first and second bundles. Insert and support in the holder 53-1,
Hereinafter, as such a combination, the two first holders 41 adjacent to each other are inserted into and supported by one second holder 53 as a unit, and the fifteenth and sixteenth first holders 41-15, The bundle of optical fibers 83 of 41-16 is inserted and supported in the eighth second holder 53-8.

After that, as shown in FIG. 8, the optical fiber 83 bundle of the first to fourth second holders 53-1 to 53-4 is inserted and supported in one third holder 55. In addition, the fifth to eighth second holders 53-
The bundle of optical fibers 83 of 5 to 53-8 is inserted and supported by the other third holder 55. Note that, in FIG. 8 as well, the bundle of the optical fibers 83 that have been focused is complicated, and therefore the path is shown by one line.

With the above-described combination, the optical fibers 83 are arranged in an orderly state without crossing each other, so that a clear interval is secured between the bundles of the adjacent optical fibers 83, and thus the back The single-core optical connector 77 inserted and connected to the optical connector of the board 21 can be easily recognized from the rear side of the device, and the insertion or removal work can be performed easily and surely.

As is apparent from FIG. 5, the backboard 2
1 and the first holder 41 of the first support shelf 33 are formed with an appropriate distance in the front-rear direction, the first holder 41 is located on the lower side, and the second support shelf 29 is provided.
The second holder 53 is on the upper side, and an appropriate vertical distance is formed between the second holder 53 and the second holder 53, so that the optical connector 24 can be more easily identified.

In the above description, the optical fiber 83 is concentrated in order from the backboard 21 side in the direction of the third holder 55, but the present invention is not limited to this, and conversely. 3 from the holder 55 to the optical fiber 8
It is also possible to use a route procedure in which the bundle of 3 is sequentially branched and laid on the backboard 21 side.

The present invention can be applied to a combination unit of the optical connector 24 of the backboard 21 and the first holder 41 as a basic form, and a combination of the first holder 41 and the second holder 53. It may be a form. (Supplementary Note 1) An electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector,
The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are cascaded in correspondence with the printed board unit unit on the back side of the above backboard corresponds to the printed board unit unit on the back side of the unit housing. An electronic device, wherein the electronic device is supported by a first holder that is provided. (Supplementary Note 2) An electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector,
The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are cascaded in correspondence with the printed board unit unit on the back side of the above backboard corresponds to the printed board unit unit on the back side of the unit housing. An electronic device which is supported by a first holder which is provided so as to support an optical fiber supported by the adjacent first holder by a second holder. (Supplementary Note 3) An electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector,
The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are cascaded in correspondence with the printed board unit unit on the back side of the above backboard corresponds to the printed board unit unit on the back side of the unit housing. The optical fiber supported by the first holder provided adjacent to the first holder and the optical fiber supported by the first holder adjacent thereto are supported by the second holder and the optical fiber supported by the second holder adjacent to the third holder.
An electronic device characterized in that it is supported by a holder. (Supplementary Note 4) The optical connector on the back side of the backboard is a connector housing into which a plurality of single-core optical connectors of external optical fibers can be removably inserted in the column direction, and by inserting the single-core optical connectors into the connector housing. The electronic device according to any one of claims 1 to 3, which is configured.

(Supplementary Note 5) The first holder is arranged at an end portion of the optical connector on the rear side of the backboard in rear view, with a space therebetween so as to be provided at a predetermined distance from the rear surface of the backboard. The electronic device according to any one of claims 1 to 3. (Supplementary Note 6) The first holder and the second holder are separated from each other by a space so as to be spaced a predetermined distance from the back surface of the backboard, and the first holder is arranged on one end side of the optical connector on the back surface of the backboard. 4. The electronic device according to claim 2, wherein the second holder is arranged on the other end side.

[0051]

As described above in detail, according to the basic configuration of the electronic device of the present invention, the optical fibers connected to the printed circuit board unit are concentrated and supported by the corresponding first holders on the back side. As a result, compared to the case where unspecified optical fibers are put together, the optical fibers of the adjacent printed circuit board units are arranged in a neat manner with a space between them, so that the optical fibers and optical connectors can be identified with certainty and attachment / detachment work can be performed easily. It

Further, the optical fibers supported by the first holder can be sequentially and orderly aligned by collectively supporting a plurality of adjacent optical fibers by the second holder. Further, the optical fiber supported by the adjacent first holder is supported by the second holder, and the optical fiber supported by the adjacent second holder is supported by the third holder, thereby systematically performing optical transmission. The practical effect is extremely remarkable in that the fibers can be supported and arranged in an orderly manner.

[Brief description of drawings]

FIG. 1 is a front view of an electronic device according to the present invention.

FIG. 2 is a front view showing a state in which a front cover of FIG. 1 is removed.

FIG. 3 is a front view showing a state in which the printed board unit of FIG. 2 is removed.

FIG. 4 is a rear view of the electronic device according to the present invention.

FIG. 5 is a side view external view of the electronic device.

FIG. 6 is a rear view and a side view of a first support shelf.

FIG. 7 is an explanatory view of mounting the first holder in FIG.

FIG. 8 is a plan view and a side view of a second support shelf.

FIG. 9 is a front view and a plan view of a third holder.

FIG. 10 is a side view of the main parts of the printed board unit and the backboard.

FIG. 11 is a perspective view of a main part for explaining the configuration of the optical connector.

FIG. 12 is a schematic rear-view external perspective view of a conventional electronic device.

[Explanation of symbols]

1 unit case 2 insertion holes 3 optical fiber 4 Optical connector 5 Support bracket 6 Frame-shaped holder 7 Holder mounting bracket 8 optical fibers, multiple optical fibers 9 extra length 11 unit housing 12 Front cover 13 openings 14 mounting holes 15 Mounting bracket 16 Printed board unit 17 Fasteners 18 Cooling fan unit 21 backboard 22 electrical connector 23 Multi-pole electrical connector 24 optical connector 25 Multi-pole electrical connector 26 Guide groove 27 fans 28 terminal board 29 Second support shelf 31 back plate 32 electrical connector 33 First support shelf 34 Wiring support shelf 35 upper surface 36 Side plate 37 Shelf board 38 sides 39 Upright 41 First holder 42 cutout 43 opening 44 Locking piece 45 Release projection 46 Engagement protrusion 47 Arm 48 Shelf board part 49 Standing surface 51 Shelf surface 52 Square hole 53 Second holder 54 side 55 Third Holder 56 Body 57 legs 58 Movable member 59 screw insertion hole 61 protrusions 62 engagement step 63 Positioning hole 64 screw holes 65 countersunk head screw 71 lever 72 electrical connector 73 Multi-pole electrical connector 75 optical connector 76 Multi-pole electrical connector 77 Single-core optical connector 78 connector housing 81 Single-core optical connector 82 Connector housing 83 optical fiber

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masatomo Ohta             4-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa             No. 1 within Fujitsu Limited (72) Inventor Hirohito Kadoya             4-1, Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa             No. 1 within Fujitsu Limited (72) Inventor Katsuhiko Ikeda             2-3-9 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa             Issue Fujitsu Digital Technology Stock Association             In-house (72) Inventor Akira Sawada             2-3-9 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa             Issue Fujitsu Digital Technology Stock Association             In-house (72) Inventor ▲ Takano Wataru             2-3-9 Shin-Yokohama, Kohoku-ku, Yokohama-shi, Kanagawa             Issue Fujitsu Digital Technology Stock Association             In-house F-term (reference) 2H036 QA01 QA46 QA57                 2H038 CA37 CA38                 4E352 AA08 AA16 BB02 BB10 BB11                       CC11 CC40 CC43 CC52 DD05                       DD15 DD16 DR17 DR39 DR42                       DR45 GG12 GG15 GG20 GG23                 5E348 AA03 AA08 AA13 CC08 CC09                       EE36 EF02 EF04 EF47

Claims (3)

[Claims] 1. An electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector. , The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are cascaded in correspondence with the printed board unit unit on the rear side of the backboard is printed board unit unit on the rear side of the unit housing. An electronic device characterized by being supported by a first holder provided correspondingly. 2. An electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector. , The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are cascaded in correspondence with the printed board unit unit on the rear side of the backboard is printed board unit unit on the rear side of the unit housing. An electronic device, characterized in that it is supported by a corresponding first holder, and an optical fiber supported by the adjacent first holder is supported by a second holder. 3. An electronic device in which a backboard made of a printed wiring board is provided in a unit housing, and a plurality of printed board units are inserted and mounted in parallel to the backboard and plugged in by a connector. , The optical fiber of the optical connector of the external optical fiber that is inserted and connected to each of the plurality of optical connectors that are cascaded in correspondence with the printed board unit unit on the rear side of the backboard is printed board unit unit on the rear side of the unit housing. An optical fiber supported by a corresponding first holder and supported by an adjacent first holder is supported by a second holder, and an optical fiber supported by an adjacent second holder is supported by a third optical fiber.
An electronic device characterized in that it is supported by a holder.