JP4020308B2 - Embedded box for optical outlet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical outlet embedded box which is embedded in an indoor wall or the like and has an optical outlet mounting frame mounted on the surface side.
[0002]
[Prior art]
With the progress of ultra-high-speed Internet connection technology, an Internet connection service using an optical fiber called FTTH (Fiber To The Home) has become widespread in ordinary houses.
The optical fiber is drawn into the user's home from an optical fiber network constructed by an FTTH provider or the like. In recent years, a construction method similar to that for general telephone wiring has been adopted for indoor wiring of such optical fibers (hereinafter also referred to as optical wiring). That is, when constructing a house, a spare line is wired in advance through a pipe in a wall, and an embedded box is installed in a wall of an important place indoors. The end of the spare line is drawn into the embedded box, and a mounting frame is attached to the front opening of the embedded box via the indoor wall. An optical fiber connector called an optical outlet is attached to the mounting frame.
When a resident desires an optical fiber facility, the optical fiber is drawn indoors from an external optical fiber network, and the end of the optical fiber is guided to an embedded box using the spare line and connected to an optical outlet.
[0003]
Patent Documents 1 and 2 described later disclose a conventional embedded box used for this type of optical wiring. As shown in FIG. 1 (a), the embedded box (13) of Patent Document 1 has a mounting frame (16) attached to the center of the front surface, and further, in the hollow portion of the embedded box (13). The extra length of the optical fiber (1) can be accommodated so as to wind around the mounting frame (16).
Further, as shown in FIG. 1, the embedded box (4) of Patent Document 2 has a mounting frame (5) attached to the front opening, and is further mounted in the hollow portion of the embedded box (4). The extra length portion of the optical fiber (1) is bundled and stored in the opposite part of the frame (5).
[0004]
[Patent Document 1]
JP 63-257701 A [Patent Document 2]
JP-A-9-127369 [0005]
[Problems to be solved by the invention]
In the above-described embedding box (13) for an optical outlet of Patent Document 1, the extra length portion of the optical fiber (1) can be stored so as to be wound around the mounting frame (16). However, the operation of bundling and storing the extra length around the periphery is complicated. Moreover, when the mounting frame (16) is attached to the front opening of the embedding box (13), if the extra length of the optical fiber (1) protrudes to the front opening even a little, the embedding box (13 ) And the mounting frame (16) bite the extra length, or a rear extension from the optical outlet (2) (for example, the optical plug (5)) There was a risk of pressing and bending.
[0006]
An optical fiber has such a fineness that it can not perform its function only by being slightly scratched or bent beyond an allowable range. Therefore, biting and excessive pressure action as described above cause serious defects.
[0007]
In order to avoid such a defect, in patent document 2, the protection member (7) is provided, the extra length part of the optical fiber (1) is accommodated in this protection member (7), and an embedded box ( 4) The structure arrange | positioned in the hollow part is employ | adopted. For this reason, a troublesome work of bundling and storing the extra length of the optical fiber in the protective member is required, and there is a drawback that the workability is lacking.
[0008]
The present invention has been made in view of the above circumstances, and it is possible to perform the optical fiber wiring work appropriately and easily without damaging the extra length of the optical fiber and without causing excessive pressure to act on the extra length. The purpose is to enable implementation.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is an embedding box for an optical outlet, which is embedded in an indoor wall or the like, and a mounting frame of the optical outlet is mounted on the surface side,
A box-shaped embedded box body;
A mounting opening formed on the front surface of the embedded box body and in which the mounting frame of the optical outlet is disposed,
A mounting portion that is formed on the periphery of the mounting opening in the embedded box body, and on which the mounting frame of the optical outlet is mounted,
An internal space of the embedded box main body, which is extended and formed in a lower part than the mounting opening, and is capable of storing an extra length portion of the optical fiber; and
It is provided with.
[0010]
In this way, by extending the extra length storage portion below the mounting opening where the mounting frame is arranged, the extra length portion of the optical fiber can be easily accommodated, and the mounting position of the mounting frame The extra length of the optical fiber can be stored at a position offset from the base, so there is no risk of biting the optical fiber when mounting the frame or applying excessive pressure to the stored optical fiber. Can be done.
[0011]
Further, in the present invention, it is preferable to form an optical fiber outlet in communication with the surplus length storage portion on the bottom wall of the embedded box body. The optical fiber is drawn out or drawn from the embedded box through this outlet.
[0012]
Furthermore, if an extra length support means for bundling and supporting the extra length portion of the optical fiber is provided inside the embedded box body, the extra length portion of the stored optical fiber is held in an appropriate posture without being scattered. .
[0013]
In addition, if the surplus length supporting means includes a slide member that is movable in the vertical direction from the position opposite the mounting opening to the surplus length storage portion, and a hooking portion provided on the slide member, first the mounting opening The excess length portion of the optical fiber is easily bundled into the excess length storage portion by bundling the excess length portion of the optical fiber in a circular shape at the position opposite to the holding portion and holding it in the hook portion, and then sliding the slide member to the extra length storage portion. Can be stored.
[0014]
Here, the hooking portion includes at least a pair of opening / closing hooking portions that can be expanded to the left and right. These opening / closing hooking portions are closed at the center at the upper moving end of the slide member, and at the lower moving end of the slide member. It can also be set as the structure expanded to. When the slide member moves downward, that is, when the slide member moves to the extra length storage part of the embedded box body, the extra length portion of the optical fiber bundled in a circular shape is made into its curvature by expanding the opening / closing hook part. It can be supported by a plurality of fulcrums along the same, and it becomes possible to maintain a proper posture more stably.
[0015]
In addition, by forming an opening / closing guide that opens and closes the opening / closing hook portion as the slide member moves on the back wall of the embedded box body, the opening / closing hook portion can be automatically opened / closed as the slide member moves.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1-4 is a figure which shows the indoor wiring installation of the optical fiber using the embedding box for optical outlets concerning embodiment of this invention, FIG. 1 is a front view, FIG. 2 is side sectional drawing, FIG. FIG. 4 is a side sectional view of the front view before the mounting frame is mounted.
First, with reference to these drawings, a construction example of an optical fiber indoor wiring facility will be described.
[0017]
The outer shape of the embedding box is constituted by a box-shaped embedding box body 10. The embedded box main body 10 is fixed to a pier (not shown) installed inside the indoor wall when the house is built, and the indoor wall 1 is formed on the front surface thereof by a panel board or the like (see FIG. 2).
[0018]
A mounting opening 11 is formed on the front surface of the embedded box body 10 in a region above the center height position. A portion of the indoor wall 1 facing the mounting opening 11 is cut out to expose the mounting opening 11 to the indoor side. Further, a mounting portion 12 made of a screw hole is formed in the upper edge central portion and the lower edge central portion of the mounting opening 11, and the mounting frame 30 is attached to the mounting portion 12 from the indoor side with a fastener such as a screw. Is installed.
[0019]
The attachment frame 30 is a member for holding the optical outlet 40, and the optical outlet 40 is detachably attached to the attachment frame 30. The mounting structure of the optical outlet 40 to the mounting frame 30 and the mounting structure of the mounting frame 30 to the embedding box are configured according to the same standard as that of a general indoor electrical outlet. Thus, since the mounting frame 30 can be mounted on the embedded box and the optical outlet 40 can be mounted on the mounting frame 30, good workability can be ensured.
[0020]
An extra-length storage portion 13 is formed inside the embedded box body 10, and an outlet 14 for the optical fiber 2 is formed on the bottom wall. When building a house, a pipe is preliminarily constructed in the wall space, and the end of a spare wire (not shown) made of a wire or the like is drawn into the interior of the embedded box body 10 from the outlet 14 through this pipe.
The optical fiber 2 is provided with an SC connector 3 at one end, and one end of the optical fiber 2 is connected to the optical outlet 40 using the SC connector 3. The other end of the optical fiber 2 is connected to a spare line and drawn out from the interior of the embedded box body 10 through the outlet 14. That is, when the spare line is pulled from the central control panel side provided at a predetermined location indoors, one end of the optical fiber 2 connected to the spare line is also pulled and guided to the central control panel.
At this time, the optical fiber 2 to be left inside the embedded box body 10 has an extra length that is necessary for the connection work to the optical outlet 40. That is, the SC connector 3 provided at one end of the optical fiber 2 is pulled out from the mounting opening 11 to the indoor side and connected to the optical outlet 40 on the indoor side. Thereafter, when the mounting frame 30 is attached to the embedded box body 10, the surplus length portion 2 a of the optical fiber 2 is bundled in a circular shape and accommodated in the surplus length accommodating portion 13.
A decorative plate 50 that covers the outer periphery of the optical outlet 40 is also attached to the mounting frame 30 from the outdoor side.
[0021]
5-10 is a figure which shows the detailed structure of the embedding box for optical outlets.
Next, the embedded box for optical outlets will be described in more detail with reference to these drawings.
As shown in FIGS. 6 and 7, the embedded box body 10 includes a box-shaped housing 10a having an open front surface and a plate-like cover member 10b attached to the front surface of the housing 10a. . As shown in FIG. 5A, the cover member 10b is attached to the front opening of the housing 10a with a fastener such as a screw. The attachment opening 11 is formed in the cover member 10b. As described above, the attachment opening 11 is formed in a region on the front surface of the embedded box body 10 and above the central height position, and the attachment frame 30 of the optical outlet 40 is disposed in the attachment opening 11. The
[0022]
The surplus length accommodating portion 13 that accommodates the surplus length portion 2a of the optical fiber 2 is an internal space of the embedded box body 10 and is formed below the attachment opening 11 (see FIG. 5). For this reason, since the extra length portion 2a of the optical fiber 2 is stored at a position offset from the mounting position of the mounting frame 30, the optical fiber 2 is bitten when the mounting frame 30 is mounted, or excessive pressure is applied to the stored optical fiber 2. Therefore, it is possible to quickly perform proper construction work.
[0023]
The outlet 14 of the optical fiber 2 is formed on the bottom wall of the embedded box body 10 so as to communicate with the surplus length storage portion 13, and thereby the surplus length portion 2 a of the optical fiber 2 below the mounting opening 11. Can be accommodated, and the mounting operation of the mounting frame 30 to the embedded box can be performed safely and easily.
[0024]
A pair of slide guides 15 extending in the vertical direction protrude from the back wall of the embedded box body 10, and a slide member 20 is movably engaged with the slide guide 15. As shown in FIG. 8, the slide member 20 has a base portion 21, a central hook portion 22, and left and right open / close hook portions 23. With these configurations, the extra length portion 2a of the optical fiber 2 is bundled and supported. Long support means are formed.
[0025]
The base portion 21 of the slide member 20 is formed with engaging portions 21a with the slide guide 15 on both side edges. By engaging the engaging portion 21a with the slide guide 15, the slide member 20 is embedded in the embedded box. While being held by the back wall of the main body 10, the member 20 can move in the vertical direction along the slide guide 15.
[0026]
The center hooking portion 22 is formed at a substantially central portion of the slide member 20, and includes a holding portion 22a that rises forward from the base portion 21, and a detachment preventing portion 22b that is bent upward from the tip of the holding portion 22a. ing.
[0027]
The left and right opening / closing hooks 23 are formed separately from the base 21 and are coupled to the base 21 so as to be rotatable at the base part of the central hook 22. These opening / closing hooks 23 are also formed with a holding part 23a that rises forward and a detachment prevention part 23b that is bent upward from the tip of the holding part 23a.
And the holding part 23a and the detachment prevention part 23b of each opening / closing hook part 23 are the holding part 22a and the detachment prevention part of the central hook part 22 at the center part of the slide member 20, as shown in FIGS. 22b overlaps. This state is the closed state of each open / close hook 23. On the other hand, as shown in FIGS. 8 (c) and 8 (d), the open / close state of each open / close hook portion 23 is a state where it is opened to the left and right away from the central hook portion 22.
[0028]
As shown in FIG. 6, a pair of open / close guide grooves 16 extending in the vertical direction are formed in the inner portion of the pair of slide guides 15 on the back wall of the embedded box body 10. These open / close guide grooves 16 are composed of a parallel region 16a having a narrow interval extending from the upper end to a certain length, and an expanded region 16b in which the interval gradually increases downward from the lower end of the parallel region 16a. The upper end of the open / close guide groove 16 is disposed at a position facing the mounting opening 11, while the lower end of the open / close guide groove 16 is disposed in the surplus length storage portion 13.
[0029]
Each open / close hook portion 23 of the slide member 20 is formed with an engagement pin 23c protruding to the back side, and each of the engagement pins 23c is engaged with the open / close guide groove 16. The parallel region 16a of the opening / closing guide groove 16 guides the engaging pin 23c to a position where each opening / closing hook 23 is closed. Moreover, the expansion area | region 16b of the said opening / closing guide groove 16 guides the engaging pin 23c to the position which makes each opening-and-closing hook part 23 an open state. Thus, when the slide member 20 moves upward, the engagement pin 23c is guided to the parallel region 16a of the open / close guide groove 16 as shown in FIG. On the other hand, when the slide member 20 moves downward, the engagement pin 23c is guided to the expansion region 16b of the open / close guide groove 16 as shown in FIG.
[0030]
Therefore, when the slide member 20 moves to the upward movement end, the central hooking portion 22 and the respective opening / closing hooking portions 23 are arranged at positions facing the mounting opening 11, and each opening / closing hooking portion 23 overlaps the central hooking portion 22. Block in state. For this reason, the extra length portion 2a of the optical fiber 2 bundled in a circle can be easily hooked and held from the attachment opening 11 to the central hook 22 and the open / close hooks 23.
[0031]
Next, when the slide member 20 is moved downward, when the slide member 20 moves to the lower movement end, the central hook portion 22 and each opening / closing hook portion 23 are disposed in the extra length storage portion 13, and each opening / closing hook portion. 23 becomes the state opened to right and left. Thus, the extra length portion 2a of the optical fiber 2 bundled in a circle can be accommodated in the extra length accommodating portion 13 simply by moving the slide member 20 downward. Moreover, the extra length portion 2a of the optical fiber 2 bundled in a circular shape can be supported by a plurality of fulcrums along the curvature by the central hook portion 22 and the open / close hook portions 23 opened to the left and right, and more stable. Thus, it is possible to maintain an appropriate posture.
[0032]
FIG. 11 is a front view showing a modification of the embedding box for an optical outlet according to the present invention. The embedded box shown in the figure has a configuration in which the width of the embedded box main body 10 is enlarged with respect to the mounting opening 11 in which the mounting frame 30 is disposed, and thereby the extra length portion of the optical fiber 2 with a margin. 2a can be stored in the embedding box.
[0033]
FIG. 12 is a front view showing another modification of the embedding box for an optical outlet according to the present invention. The embedded box shown in the figure has a structure in which two mounting frames 30 can be mounted side by side. For this purpose, the width of the embedded box body 10 is widened, and the mounting opening 11 is also widened in the width direction. It is formed. Two pairs of mounting portions 12 are formed on the periphery of the mounting opening 11 (specifically, the upper edge central portion and the lower edge central portion) in order to mount two mounting frames 30 respectively. In addition, two outlets 14 are formed on the bottom wall of the embedded box body 10.
[0034]
In the back wall of the embedded box body 10, two sets of the above-described slide guide 15 and opening / closing guide groove 16 are formed in accordance with the mounting portion 12 of the mounting frame 30. A slide member 20 is movably engaged with each slide guide 15, and an engagement pin 23 c of an opening / closing hook 23 provided in each slide member 20 is engaged with each opening / closing guide groove 16. In FIG. 12, the engagement state of the slide member 20 with respect to the left slide guide 15 is omitted.
[0035]
The present invention is not limited to the above-described embodiment. For example, even if the extra length support means including the slide member 20, the central hook portion 22, and the open / close hook portion 23 is omitted, the extra length is stored. The extra length portion of the optical fiber can be easily accommodated simply by forming the portion in the interior space of the embedded box body and below the mounting opening, and it is possible to achieve an exceptional effect that has not been achieved in the past. .
[0036]
Further, the embedded box for an optical outlet according to the present invention can be used not only for a house but also for an optical fiber wiring facility in various buildings.
[0037]
【The invention's effect】
As described above, according to the present invention, the optical fiber wiring work can be carried out appropriately and easily without damaging the extra length of the optical fiber and without fear of excessive pressure acting on the extra length. It becomes possible to do.
[Brief description of the drawings]
FIG. 1 is a front view showing an optical fiber indoor wiring facility using an optical outlet embedded box according to an embodiment of the present invention.
FIG. 2 is a side cross-sectional view showing an optical fiber indoor wiring facility using an optical outlet embedded box according to an embodiment of the present invention.
FIG. 3 is a front view showing the indoor wiring facility before the mounting frame shown in FIG. 1 is mounted.
4 is a front view showing the indoor wiring facility before the mounting frame shown in FIG. 2 is attached. FIG.
FIGS. 5A and 5B are diagrams showing a detailed structure of an optical outlet embedding box according to an embodiment of the present invention, in which FIG. 5A is a front view, and FIG.
6 is a front view showing a housing of an embedded box body which is a component of the optical outlet embedded box shown in FIG. 5. FIG.
7A is a cross-sectional view taken along the line AA in FIG. 6, FIG. 7B is a cross-sectional view taken along the line BB, and FIG. 7C is a cross-sectional view taken along the line CC.
8 is a view showing a slide member as a component of the embedding box for an optical outlet shown in FIG. 5, in which (a) is a front view showing a state in which an opening / closing hook is closed, and (b) is a side sectional view, c) is a front view of the state in which the opening / closing hook is opened, and (d) is a side sectional view of the same.
FIG. 9 is a front view showing a state in which the slide member has moved to the upward movement end with respect to the embedded box body.
FIG. 10 is a front view showing a state in which the slide member has moved to the lower movement end with respect to the embedded box body.
FIG. 11 is a front view showing a modification of the embedding box for an optical outlet according to the present invention.
FIG. 12 is a front view showing another modified example of the optical outlet embedded box according to the present invention.
[Explanation of symbols]
1: indoor wall 2: optical fiber 2a: extra length portion 3: SC connector 10: embedded box body 10a: housing 10b: cover member 11: mounting opening 12: mounting portion 13: extra length storage portion 14: outlet 15: Slide guide 16: Opening / closing guide groove 16a: Parallel region 16b: Expanding region 20: Slide member 21: Base portion 21a: Engaging portion 22: Central hooking portion 22a: Holding portion 22b: Detachment preventing portion 23: Opening / closing hooking portion 23a : Holding part 23b: Detachment preventing part 23c: Engaging pin 30: Mounting frame 40: Optical outlet 50: Decorative plate

Claims (1)

An embedding box for an optical outlet embedded in an indoor wall and mounted with an optical outlet mounting frame on the surface side,
A box-shaped embedded box body;
A mounting opening formed on the front surface of the embedded box body and in which the mounting frame of the optical outlet is disposed,
A mounting portion that is formed at the periphery of the mounting opening in the embedded box body, and on which a mounting frame of an optical outlet is mounted,
An internal space of the embedded box main body, which is extended and formed at a lower portion than the mounting opening, and an extra length storage portion capable of accommodating an extra length portion of the optical fiber;
With
Provided inside the embedded box body is a surplus length support means for bundling and supporting a surplus length portion of the optical fiber,
The surplus length support means includes a slide member that is movable in a vertical direction from a position facing the mounting opening to the surplus length storage portion, and a hook portion provided on the slide member,
Furthermore, the hook part includes at least a pair of opening and closing hook parts that can be expanded to the left and right,
These opening and closing hooks are configured to close to the center at the upper moving end of the slide member and to expand to the left and right at the lower moving end of the slide member,
An opening / closing guide for opening / closing the opening / closing hook portion as the slide member moves is formed on a back wall of the embedded box body .

Images