JP4283245B2 - Optical receiver unit storage structure - Google Patents

Description

  The present invention relates to a unit housing structure for an optical receiver.

  2. Description of the Related Art Conventionally, an optical receiver (FTTH terminal) is known as a device for drawing an optical fiber from outside into a room (for example, see Patent Document 1). In this optical receiver, an optical signal input through a broadcasting optical fiber is converted into an electric signal by an optical reception amplification unit, amplified, and output. And as this optical receiver, what is attached to attachment surfaces, such as a wall surface extended in an up-down direction, is known.

  As a specific structure of such an optical receiver, a main body casing in which a rear portion is attached to a mounting surface extending in the vertical direction and the front surface is opened, a fiber tray covering the front side of the main body casing, and the main body casing, It is conceivable to include a broadcasting system unit that is accommodated between the fiber tray. In this optical receiver, the main body casing and the fiber tray are coupled to the main body casing so that the fiber tray can be inclined at a predetermined angle, and can be rotated at a lower portion thereof, and the fiber tray is connected to the main body casing. The broadcast-type device unit is detachably accommodated through the space between the fiber tray and the main body casing in a state in which is inclined forward by a certain angle.

Here, the main body casing and the fiber tray are coupled to the main body casing so as to be able to incline the fiber tray by a certain angle so as to be rotatable at the lower part thereof for the following reason. In the main body casing, a cylindrical portion is formed at a lower portion thereof, and the broadcasting system device unit is housed so that an output terminal or a monitor terminal of the broadcasting system device unit is positioned in the cylindrical portion, A coaxial cable is connected to the terminal, and the coaxial cable extends so as to hang downward through the cylindrical portion. Therefore, if the fiber tray is inclined with respect to the main body casing at a large angle, the terminal or the coaxial cable may interfere with the cylindrical portion and be damaged.
JP 2004-251968 A (paragraphs 0020 to 0022 and FIG. 11)

  In the optical receiver described above, in the state of maintenance / inspection work or repair work for failure, with the fiber tray tilted forward by a certain angle with respect to the main body casing, the removed broadcasting system equipment unit is It is necessary to attach or detach the broadcasting system unit through the space between the main casing and the fiber tray formed in the above. However, in such a state that it is tilted forward by a certain angle, the back part between the main body casing and the fiber tray cannot be seen well, and the broadcasting system unit is well placed in the predetermined storage position between them. It is difficult to store. In particular, since the optical receiver is attached to an attachment surface such as a wall surface extending in the vertical direction, when the attachment height is high, when the broadcasting equipment unit is inserted, the body casing and the fiber tray It is difficult to perform the above-mentioned maintenance / inspection work because the back of the space can hardly be seen.

  The present invention provides a unit storage structure of an optical receiver that can securely and easily store a broadcast system device unit in a predetermined storage position when it is mounted on a mounting surface extending in the vertical direction. For the purpose.

According to the first aspect of the present invention, there is provided a main body casing having a rear portion attached to a mounting surface extending in the vertical direction and having a front surface opened, a fiber tray covering the front side of the main body casing, and between the main body casing and the fiber tray. and a device unit which is housed, the device unit comprises a casing having a rectangular tube-shaped body frame sides are opened, and two lid members for closing the opening on both sides of the body frame, the casing The plurality of locking claws provided on the periphery of each lid member are coupled to each other by being locked to the main body frame , and the main body casing and the fiber tray are attached to the main body casing. The fiber trays can be tilted at a certain angle, and can be rotated at their lower parts so that the fiber tray can be rotated at a certain angle with respect to the main body casing. In the unit storage structure of the optical receiver in which the device unit is detachably stored through the space between the fiber tray and the main body casing in a state where the fiber tray is tilted forward only, the fiber tray A pair of support plate portions are provided in parallel at an interval corresponding to the width of the main body frame , and the fiber tray and the main body are inclined with respect to the main body casing by a predetermined angle. Guiding means for guiding the device unit to a predetermined storage position when the device unit is inserted between the support plate portion of the fiber tray and the side surface portion of the main body frame through the space between the casing and the casing. It is provided. Here, the “apparatus unit” includes both a communication apparatus unit and a broadcast apparatus unit.

According to this configuration, the fiber tray support plate portion and the fiber tray through the space between the fiber tray and the main body casing in a state where the fiber tray is inclined forward by a certain angle with respect to the main body casing. When the device unit is inserted between the side surface portion of the main body frame, the device unit is predetermined by guide means provided between the support plate portion of the fiber tray and the side surface portion of the main body frame . Smooth guidance to the storage position. Therefore, even if it is not possible to see the back part between the main body casing and the fiber tray in a state where the fiber tray is inclined forward by a certain angle with respect to the main body casing, The device unit can be securely stored in a predetermined storage position.

According to a second aspect of the present invention, the guide means is formed on a guide convex portion or a guide concave portion that is formed on the support plate portion of the fiber tray and extends along the insertion direction, and on a side surface portion of the main body frame. It can be set as the structure which has a guide recessed part or a guide convex part engaged with a guide convex part or a guide recessed part so that a movement is possible.

According to this configuration, the device unit is predetermined by using the engagement relationship between the guide convex portion or the guide concave portion in the support plate portion of the fiber tray and the guide concave portion or the guide convex portion in the side surface portion of the main body frame. It is possible to guide to the storage position and smoothly store it. Therefore, the guide means can be configured with a simple structure utilizing the engagement relationship between the guide convex portion and the guide concave portion.

  According to a third aspect of the present invention, the guide means enters the support plate portion or the side surface portion where the guide concave portion is formed, and the guide convex portion enters in a direction other than engaging with the guide concave portion. It is desirable to have an obstacle projection that regulates

  In this way, the obstacle convex portion restricts the guide convex portion from entering in a direction other than engaging with the guide concave portion. Therefore, storing in the wrong position is avoided.

As described in claim 4, whereas the being formed in the support plate portion is guiding protrusions, being formed on a side surface portion of the body frame is guided recess, the guide recess, said body It can be set as the structure formed between the protrusion part which is a side part of a frame , and is formed in a lower end part side, and the latching claw part of one said cover member facing this protrusion part.

If it does in this way, a guide crevice can be simply constituted using a projection part of a side part of a main part frame , and a plurality of latching claw parts of a lid member corresponding to this projection part.

As described in claim 5, an extension convex portion extending from the end portion on the lower end side to the vicinity of the locking claw portion of the other lid member is obstructed at the end portion on the lower end portion side of the ridge portion. It can be set as the structure provided as a convex part .

In this way, when the device unit is inserted, even if the guide convex portion tries to enter a part other than the guide concave portion, the extended convex portion functions as an obstacle convex portion (obstacle) that prevents the entry, so that guidance is provided. It is avoided that a guide convex part enters into parts other than a concave part. Therefore, when the device unit is inserted, the guide convex portion surely enters the guide concave portion, and the device unit is guided to the predetermined storage position and stored.

  According to a sixth aspect of the present invention, a plurality of device units can be detachably accommodated side by side between the fiber tray and the main body casing. Here, the plurality of device units include a combination of a broadcast-type device unit and a communication-type device unit, and a combination of a broadcast-type device unit and a communication-type device unit. Also, “can be stored” includes, for example, a case where only one device unit is stored when another device unit can be stored, and another device unit can be additionally stored later.

  In this way, one device unit can be securely and easily stored in the specified storage position after removal, maintenance, etc., with the remaining device units in the storage state while attached to the mounting surface. can do. Similarly, when a new device unit is additionally stored, it can be stored securely and easily in a predetermined storage position.

As described above, according to the present invention, since the guide means is provided between the support plate portion of the fiber tray and the side surface portion of the main body frame of the casing of the device unit , the fiber tray is set at a certain angle with respect to the main body casing. When the device unit is inserted between the support plate portion of the fiber tray and the side surface portion of the main body frame through the space between the fiber tray and the main body casing in a state inclined to the front side, The guiding means can surely guide to a predetermined storage position. Therefore, after pulling out the device unit for maintenance / inspection work or repair work for failure, an insertion operation for returning the device unit to a predetermined storage position can be easily performed, and workability is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view of an optical receiver according to the present invention, FIG. 2 is a front view of a state where a casing cover of the optical receiver is opened, and FIG. 3 is a cross-sectional view of a state where a broadcasting system unit is removed.

  As shown in FIGS. 1 to 3, the optical receiver 1 includes a main body casing 2 whose front surface (the left side in FIG. 1 is the front side) is opened, and a fiber tray 3 that covers the front side of the main body casing 2. A casing cover 4 is provided that covers the front side of the fiber tray 3 so that it can be opened and closed. The casing cover 4 is provided with a pair of pivot portions 2A on the upper surface portion of the main body casing 2, and the casing cover 4 is rotatably supported by the pivot portions 2A. Therefore, the front side of the fiber tray 3 is opened by rotating the casing cover 4 upward.

The main casing 2 is attached to a mounting surface P that extends in the vertical direction, such as a wall surface. A broadcast-type device that includes a communication-type device unit 5 and a power supply unit that supplies power between the main casing 2 and the fiber tray 3, converts (broadcast-type) optical signals into electric signals, amplifies them, and outputs them. The unit 6 is detachably stored side by side. The fiber tray 3 is formed with openings 3A and 3B where a part of the device units 5 and 6 can be seen from the front side when the device units 5 and 6 are stored.

  The broadcast system unit 6 has an optical repeater adapter 7 for receiving an optical signal in the optical reception amplification section of the unit 6, and the optical repeater adapter 7 is provided in the casing 8 (shield case) of the unit 6. It is attached to the upper surface via a support member 15. The optical relay adapter 7 and the support member 7 are positioned in the opening 3B of the fiber tray 3 in a state where the device unit 6 is stored in a predetermined storage position. The optical signal input through the optical repeater adapter 7 is converted into an electric signal and amplified by an optical reception amplification unit in the device unit 6. This amplified electrical signal is output from an output terminal 9 provided on the lower surface of the casing 8. A monitor terminal 10 for monitoring an electric signal output from the output terminal 9 is provided in parallel with the output terminal 9 on the lower surface portion of the casing 8. The electrical signal is a television broadcast signal, and this electrical signal is supplied from the output terminal 9 to the television receiver or the like via the coaxial cable 11.

  Formed on the lower surface of the main casing 2 are cylindrical portions 2a and 2b through which the output terminal 9 and the monitor terminal 10 are inserted, respectively. Reference numeral 12 denotes a drip-proof cap attached to the cylindrical portions 2a and 2b.

  On the lower surface of the main casing 2 and the fiber tray 3, notches 2c and 3c (three in the present embodiment) into which broadcasting optical fibers or communication optical fibers are introduced correspond to each other. Is formed.

  As shown in FIG. 3, the main body casing 2 and the fiber tray 3 are coupled to the main body casing 2 so as to be able to tilt the fiber tray 3 by a certain angle so as to be rotatable at their lower edges. In addition, a rotation axis around which the fiber tray 3 rotates with respect to the main body casing 2 is indicated by a symbol A in FIG. Here, the angle range in which the rotation of the fiber tray 3 is allowed is limited to a certain angle, as described above, when the fiber tray 3 is tilted forward, the terminals are connected to the cylindrical portions 2a and 2b. This is to prevent the 9, 10 or the coaxial cable 11 from interfering and damaging them (see FIG. 5).

  The device units 5 and 6 are stored in a predetermined storage position in a state where the device units 5 and 6 are arranged on the rear surface side of the fiber tray 3 along the rear surface. The unit is stored in a state in which the fiber tray 3 is inclined by a certain angle with respect to the main body casing 2 fixed to the mounting surface P extending in the vertical direction so that the upper portion thereof is positioned in front of the lower portion. It is configured to be stored in a predetermined storage position by being inserted from above through a space S formed between the upper portion of the tray 3 and the upper portion of the main casing 2.

  As shown in FIG. 4, the casing 8 of the broadcasting system unit 6 includes a rectangular tube-shaped main body frame 8A that opens on both sides, and two lid members 8B and 8C that close the opening portions on both sides of the main body frame 8A. And have. A plurality of locking claws 8Ba, 8Ca provided on the peripheral edges of the lid members 8B, 8C are engaged with the locked protrusions 8Aa of the main body frame 8A so that they are combined to form the casing 8. Is done.

Further, as shown in FIG. 3, the fiber tray 3 has a pair of support plate portions that extend in parallel to the lower rear surface side (surface on the main body casing 2 side) at intervals corresponding to the width of the broadcasting equipment unit 6. 3a is provided, and a guide convex portion 3b extending along the insertion direction is formed on the support plate portion 3a. On the other hand, a guide concave portion 13 that engages with the guide convex portion 3b is formed on a side surface portion 8Ab (of the main body frame 8A) corresponding to the support plate portion 3a of the broadcasting system unit 6.

  The guide recess 13 includes a plurality of (three in the present embodiment) of a protrusion 14A formed on the side surface 8Ab on the lower end side and one lid member 8C facing the protrusion 14A. The locking claw portion 8Ca is formed between them. The protruding portion 14A extends in parallel to a line L connecting the tips of the locking claws 8Ca of the lid member 8C.

  An extended convex portion 14B extending to the vicinity of the locking claw portion 8Ba of the other lid member 8B is provided at the lower end portion of the ridge portion 14A. The extended convex portion 14B functions as an obstacle (obscured convex portion) that restricts the guide convex portion 3b from entering in a direction other than engaging the guide concave portion 13 when the device unit 6 is inserted. . In addition, 14 A of protrusion parts and the extended convex part 14B are formed by cutting and raising the board | plate material which comprises side part 8Ab.

  Therefore, when the broadcasting system unit 6 is pulled out from between the main casing 2 and the fiber tray 3 during maintenance / inspection work or repair work of the malfunction of the broadcasting system unit 6, first, FIG. As shown in FIG. 5, the fiber tray 3 is rotated forward about the rotation axis A, and the fiber tray 3 is tilted forward by a certain angle in the upwardly opened state. In this manner, the space portion S (gap) is formed between the fiber tray 3 and the main body casing 2 in a state where the fiber tray 3 is inclined forward by a certain angle with respect to the main body casing 2. The broadcasting system unit 6 can be pulled out from above.

  When the work is finished and inserted back into a predetermined storage position, the depth between the fiber tray 3 and the main body casing 2 is less visible to the operator, but (the optical relay adapter 7 is Inserting the equipment unit 6 (through the space S between the fiber tray 3 and the main casing 2) along the rear surface of the fiber tray 3 (adjusting to be positioned in the opening 3B of the fiber tray 3) Thus, the guide convex portion 3b and the guide concave portion 13 using the locking claw portion 8Ca of the lid member 8C are engaged, so that the broadcasting system unit 6 can be smoothly stored in a predetermined storage position. It becomes possible.

  In particular, since an extended convex portion 14B extending to the vicinity of the locking claw portion 8Ba of the upper lid member 8B is provided at the lower end portion of the ridge portion 14A, when inserting the broadcasting system unit 6 other than the guide concave portion 13 Even if the guide convex portion 3b attempts to enter the part, the extension convex portion 14B prevents the entry. Therefore, there is no possibility that the broadcast-type device unit 6 is attached in the wrong direction, and the guide convex portion 3b surely enters the guide concave portion 13. And the broadcasting-type apparatus unit 6 is reliably accommodated in a predetermined accommodation position by those engagement relations.

  The present invention is not limited to the embodiment described above, and can be modified as follows.

(i) The guide protrusion 3b of the support plate 3a of the broadcast system unit 6 is formed on the side surface 8Ab of the main body frame 8A (casing 8). It is also possible to form a guide concave portion on the support plate portion 3a of the unit 6 and a guide convex portion on the side surface portion 8Ab of the main body frame 8A.

  (ii) The pair of support plate portions 3a of the fiber tray 3 need not have the same shape on the left and right, and may have any shape having the guide convex portion 3b that engages with the guide concave portion 13.

(iii) Two support plate portions 3a between the device units 5 and 6 may be provided separately for each device unit, or one support plate portion 3a may be provided so as to be shared by the two device units. . When the support plate portion is shared, guide convex portions extending along the insertion direction of the device unit are formed on both side surfaces of the support plate portion.

  (iv) The protrusions and the like are not necessarily provided. For example, some of the locking claws 8Ba are extended as shown by two-dot chain lines in FIGS. It is also possible to form a guide recess between the first and second claw portions 8Ca.

(v) Two device units, a communication device unit and a broadcast device unit 6, are detachably housed side by side, but both are communication device units or broadcast device units. You can also. In addition, the present invention can be similarly applied to a case where one device unit is detachably accommodated or three or more device units are detachably accommodated side by side.

It is sectional drawing of the optical receiver which concerns on this invention. It is a front view in the state where the casing cover of the optical receiver was opened. It is sectional drawing of the state which removed the broadcast-type apparatus unit. The vicinity of the lower end portion of the broadcasting system unit is shown, (a) is a side view, (b) is a bottom view, and (c) is a cross-sectional view taken along line AA in FIG. 5 (a). It is sectional drawing of the state which accommodated the broadcast-type apparatus unit. It is a perspective view which shows the lower end part vicinity of a broadcast-type apparatus unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical receiver 2 Main body casing 3 Fiber tray 3a Support plate part 3b Guide convex part 6 Broadcasting equipment unit 7 Optical relay adapter 8 Casing 8Ab Side face part 8Ca Locking claw part 13 Guide concave part 14A Projection part 14B Extension convex part

Claims (6)

A main body casing having a rear surface portion attached to a mounting surface extending in the vertical direction and having a front surface opened, a fiber tray covering the front side of the main body casing, and a device unit housed between the main body casing and the fiber tray. Prepared,
The device unit includes a casing having a rectangular tube-shaped main body frame that is open on both sides and two lid members that close the openings on both sides of the main body frame, and the casing is provided on the periphery of each lid member. A plurality of locking claw portions to be combined with each other by being locked to the main body frame,
The main body casing and the fiber tray are coupled to the main body casing in such a manner that the fiber tray can be inclined at a predetermined angle and can be rotated at a lower portion thereof, and the fiber tray is inclined to the front side by a predetermined angle with respect to the main body casing. In the unit storage structure of the optical receiver in which the device unit is detachably stored through the space between the fiber tray and the main body casing,
The fiber tray is provided with a pair of support plate portions in parallel on the rear side at intervals corresponding to the width of the main body frame ,
With the fiber tray tilted forward by a predetermined angle with respect to the main body casing, through the space between the fiber tray and the main body casing, a support plate portion of the fiber tray and a side surface portion of the main body frame, A unit storage structure for an optical receiver, characterized in that a guide means for guiding the device unit to a predetermined storage position when the device unit is inserted between them is provided. The guide means is formed on a support plate portion of the fiber tray and extends along the insertion direction, and is formed on a side surface portion of the body frame and is movable to the guide convex portion or guide recess. The unit housing structure for an optical receiver according to claim 1, further comprising a guide recess or a guide protrusion that engages with the optical receiver.   The guide means has an obstacle convex portion that restricts the guide convex portion from entering in a direction other than engaging the guide concave portion on the support plate portion or the side surface portion where the guide concave portion is formed. The unit storage structure for an optical receiver according to claim 2. The support plate portion is formed with a guide convex portion, while the side surface portion of the main body frame is formed with a guide concave portion, and the guide concave portion is a side surface portion of the main body frame with a lower end portion. 4. The optical receiver according to claim 2, wherein the optical receiver is formed between a protrusion formed on the side and a locking claw of the one lid member facing the protrusion. 5. Unit storage structure. Of the protrusions, the end portion of the lower end, that the extension protrusion is provided as fault protrusions extending from an end portion of the lower end to the vicinity of the locking claw portion of the other of said lid member 5. A unit storage structure for an optical receiver according to claim 4, wherein:   The optical receiver according to claim 1, wherein a plurality of device units can be detachably accommodated side by side between the fiber tray and the main body casing. Unit storage structure.

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