JP3697238B2 - Articulated duct - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of articulated ducts.
[0002]
[Prior art]
There is known a connected duct comprising a pair of walls arranged facing each other and a bottom plate connected to the lower end of the pair of walls, and a plurality of unit ducts through which cables are inserted inside the wall. ing.
[0003]
Among such connection-type ducts, there is one in which unit ducts can be connected not only in the longitudinal direction of cables but also in the vertical direction (for example, JP-A-2001-177945).
[0004]
[Patent Document 1]
JP 2001-177945 A (Claim 3, FIG. 1, FIG. 2)
[0005]
[Problems to be solved by the invention]
In the connection type cable guide (connection type duct) disclosed in Japanese Patent Application Laid-Open No. 2001-177945, the cable guide is provided by a connection member attached to a cover attachment locking portion formed at the center of the side plate portion of the unit cable protection frame (unit duct). Since they are connected one above the other, when they are connected one above the other, the cover must be removed and replaced with a connecting member, or the connecting members must be separately attached to both sides (two locations) of the main body.
[0006]
Further, since the vertical dimension is increased by an amount corresponding to the length of the connecting member, there is room for improvement from the viewpoint of space saving.
[0007]
[Means for Solving the Problems and Effects of the Invention]
The connection type duct according to claim 1 for solving the above-mentioned problem comprises a pair of walls arranged facing each other and a bottom plate connected to the lower end of the pair of walls, and the cables are inserted inside the walls. In a connected duct configured by connecting a plurality of unit ducts to be
An intermediate wall disposed between the pair of walls and erected on the bottom plate, wherein a connecting shaft provided with a connecting convex portion at a tip is provided at one end surface of the intermediate wall. And a neck part extending from the upper end part along the insertion direction of the cables, and the other end face of the inner wall being coaxial with each of the connection shafts and fitted with the connection convex part. An inner wall having a connecting hole provided with an accommodating portion that accommodates the connecting convex portion that has passed through the neck portion so as to be displaceable along a direction parallel to the bottom plate;
Engageable with a pair of fitting shafts that respectively fit into fitting recesses provided at the upper end portions of the walls and body-side engaging portions that protrude from the bottom outer surface of the unit duct. And a connecting lid having a pair of lid-side engaging portions.
[0008]
In this connection type duct, the unit duct is provided with an intermediate wall disposed between a pair of walls and standing on the bottom plate.
From one end face of the inner wall, one connecting shaft provided with a connecting projection at the tip is extended from the base and upper end of the inner wall along the insertion direction of the cables. The end surface of the coupling is provided with a neck portion that is coaxial with each of the coupling shafts and into which the coupling convex portion is fitted, and an accommodating portion that accommodates the coupling convex portion that has passed through the neck portion so as to be displaceable along a direction parallel to the bottom plate. A hole is opened and unit ducts are connected along the insertion direction of cables by inserting the connecting convex part of one unit duct from the neck part of the other unit duct and storing it in the receiving part. .
[0009]
Moreover, since the connection convex part accommodated in the accommodating part can be displaced along a parallel direction with a bottom plate, it can be bent along a parallel direction with a bottom plate as a whole.
However, since the connecting shafts are provided at two locations, that is, the base portion and the upper end portion of the inner wall, the bending along the direction orthogonal to the bottom plate is only possible (substantially cannot be bent and deformed).
[0010]
The coupling lid is attached to the main part of the unit duct (the part including the wall, the bottom plate and the inner wall) by fitting the fitting shaft into the fitting recess provided at the upper end of the wall, and the cables are connected to the wall. Prevents falling off from the open top.
In addition, a body side engaging portion is formed in a protruding manner on the outer surface of the bottom portion (the bottom side portion or bottom plate of the wall) of the unit duct, and the connecting lid can be engaged with the body side engaging portion, respectively. Since a pair of lid-side engaging portions are provided, the lid-side engaging portion (connecting lid) of the lower unit duct and the main-unit-side engaging portion (main body portion) of the upper unit duct are engaged. Can be connected up and down. That is, a plurality of connected ducts can be stacked and used integrally.
[0011]
That is, since the connection lid for preventing the cables from falling off is also a member for connecting the unit ducts up and down, there is no need to remove the connection cover when connecting the upper and lower units, and a special connection member It is not necessary.
In addition, since the connecting lid also serves as a member for connecting up and down, it is possible to prevent the vertical dimension from becoming large when connecting up and down, thereby saving space.
[0012]
This space saving effect can be achieved by adopting the configuration of claim 2, that is, the connection type duct according to claim 1, in which the upper surface of the connection lid and the outer surface of the bottom plate of the unit duct are both planar. Since the upper surface of the connecting lid of the unit duct to become and the bottom plate of the unit duct to be above can be brought into close contact with each other, it becomes even better.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described by way of examples of the present invention.
[0014]
【Example】
The unit duct 100 of this embodiment is composed of a main body 10 and a connecting lid 50, both of which are synthetic resin injection molded products.
As shown in FIG. 1, the main body 10 of the unit duct 100 (see FIGS. 3 and 4) includes a pair of walls 12 arranged facing each other, a bottom plate 14 connected to the lower ends of the pair of walls 12, and a pair of walls 12. The intermediate wall 16 is provided between the walls 12 (center portion) and is erected on the bottom plate 14.
[0015]
The wall 12 is gently curved, the outer surface 12a side is convex, the inner surface 12b side is concave, and a fitting recess 18 that opens upward is provided at the upper end. The lower end portion of the wall 12 is smoothly connected to the bottom plate 14, and the main body side engaging portion 20 extends from the outer surface 12a.
[0016]
The bottom plate 14 has a flat plate shape and is provided with two holes 22 and two protrusions 24. The hole 22 can be used as a screw hole for fixing the unit duct 100 (main body portion 10) to a wall surface or the like.
The middle wall 16 is erected perpendicularly to the upper surface 14 a of the bottom plate 14 at a position equidistant from the pair of walls 12, and is located on the inner surface 12 b of the wall 12, the upper surface 14 a of the bottom plate 14, and the inside of the side surface of the middle wall 16. The space is a space through which cables such as cables, optical fibers, and electric wires are inserted.
[0017]
A connecting shaft 26 extends from one end face of the base portion (connected portion with the bottom plate 14) and the upper end portion of the inner wall 16, and a spherical connecting convex portion 26a is provided at the distal end portion of the connecting shaft 26. It has been.
Further, on the other end face of the inner wall 16, two connecting shafts 26 and connecting holes 32 that are coaxial with each other are opened.
[0018]
The connecting hole 32 is a three-stage hole including a guide portion 32a, a housing portion 32b, and a tip hole 32c. The entrance portion (connecting portion with the guide portion 32a) of the housing portion 32b is a small-diameter neck portion 32d, and the tip hole 32c side has a large diameter. That is, the cross-sectional shape of the accommodating part 32b is trapezoidal.
[0019]
As shown in an enlarged view in FIG. 5A, the inner diameter of the neck portion 32d is slightly smaller than the outer diameter of the connecting convex portion 26a, but the connecting convex portion 26a can be fitted and allowed to pass by elastic deformation. Further, once the connecting convex portion 26a passes through the neck portion 32d and enters the accommodating portion 32b, it cannot be easily detached. The accommodating portion 32b is sized and shaped to slide the accommodated connecting convex portion 26a, and can be relatively displaced as long as the neck 26b of the connecting convex portion 26a contacts the inner surface of the guide portion 32a.
[0020]
As shown in FIG. 2, the connecting lid 50 that forms the unit duct 100 (see FIGS. 3 and 4) in cooperation with the main body 10 includes a plate-like ceiling 52.
A projecting portion 54 extending in an oblique direction and a shaft support portion 56 extending in an orthogonal direction are connected to both ends of the ceiling portion 52.
[0021]
An opening 58 is provided between the ceiling portion 52 and the overhang portion 54, and a step-like lid-side engagement portion 54 a is formed on the overhang portion 54 on the opening 58 side. On the other hand, a fitting shaft 62 that extends across the opening 58 extends from the shaft support portion 56.
As shown in an enlarged view in FIG. 5 (b), the pair of fitting shafts 62 can be fitted into the fitting recesses 18 provided at the upper end of the wall 12 of the main body 10, respectively, and are lid-side engaged. The part 54a can be engaged with the main body side engaging part 20. The fitting between the fitting shaft 62 and the fitting recess 18 and the engagement between the lid side engaging portion 54a and the main body side engaging portion 20 can be released.
[0022]
As described with reference to FIG. 5B, the connecting lid 50 is connected to the main body 10 by fitting the fitting shaft 62 into the fitting recess 18 to form the unit duct 100.
As described with reference to FIG. 5A, the unit duct 100 is configured such that the pair of connecting convex portions 26 a of one unit duct 100 are fitted into the connecting holes 32 of the other unit ducts 100, respectively. Connected. FIG. 3 shows a state in which two unit ducts are connected. By repeating this, a desired number of unit ducts 100 can be connected to form a connected duct 200 having a desired length.
[0023]
The connecting shaft 26 in which the connecting convex portion 26a is accommodated in the accommodating portion 32b can be relatively displaced as long as the neck 26b of the connecting convex portion 26a is in contact with the inner surface of the guide portion 32a as described above. Since the connecting shafts 26 of the books fit the respective connecting convex portions 26a into the accommodating portions 32b, displacement along the vertical direction (displacement along the paper surface in FIG. 3) is virtually impossible. Therefore, each unit duct 100 forming the connection type duct 200 can be relatively displaced only along the direction parallel to the bottom plate 14 (the displacement range is as described above), and thus the connection type duct 200 can be bent. The protrusion 24 regulates the amount of bending by contacting the counterpart unit duct 100 during bending.
[0024]
When cables are inserted into the connection type duct 200, the cables may be inserted from one end of the connection type duct 200 to the other end, but this method is not workable. In particular, when the connecting duct 200 becomes long, this defect becomes remarkable.
However, in the connection type duct 200 of the present embodiment, only one fitting shaft 62 of the connection lid 50 of the unit duct 100 is fitted in the fitting recess 18 and the other fitting shaft 62 is not fitted. The connection lid 50 can be opened and closed like a door using the fitted fitting shaft 62 as a hinge shaft. Then, with the connection lids 50 opened and closed in this manner, the cables are put into the main body 10, and then the connection lids 50 are closed and the remaining fitting shafts 62 are fitted into the fitting recesses 18. Therefore, it is very easy to insert the cables. No matter how long the connecting duct 200 is, the cables can be inserted by this method, so the workability is very good.
[0025]
Further, as described with reference to FIG. 5 (b), the unit duct 100 is changed from the lid side engaging portion 54a of the lower unit duct 100 to the main body side engaging portion 20 of the upper unit duct 100. The two unit ducts 100 can be connected one above the other as shown in FIG. Therefore, the connection type ducts 200 formed by connecting the plurality of unit ducts 100 can be connected one above the other. Although FIG. 4 shows a state in which two unit ducts 100 are vertically stacked and connected, it is possible to stack a plurality of connected ducts 200 in a desired number of stages by repeating vertical connection.
[0026]
Even when the connection type ducts 200 are stacked in a plurality of stages, the bendability (bending displacement along the direction parallel to the bottom plate 14) of each connection type duct 200 is maintained. Can be bent.
Since such vertical connection is possible, for example, in the case where the number of cables to be passed through the connection type duct 200 in the existing apparatus is increased, the connection type duct 200 that passes through the additional cables is replaced with the existing connection type duct. What is necessary is just to pile on or under 200. On the contrary, several stages of the connecting ducts 200 can be removed from the state where they are used in multiple stages. That is, it is possible to easily cope with increase / decrease in cables.
[0027]
In the unit duct 100 of the embodiment, a connecting shaft 26 having a connecting convex portion 26a at the tip is provided at the base and upper end of one end surface of the inner wall 16, and the other end surface of the inner wall 16 has Since the connecting hole 32 having the accommodating portion 32b that accommodates the connecting convex portion 26a that has passed through the neck portion 32d so as to be displaceable along the direction parallel to the bottom plate 14 is opened, the connecting convex portion 26a of one unit duct 100 is formed. By fitting from the neck part 32d of the other unit duct 100 and accommodating it in the accommodating part 32b, the unit ducts 100 can be connected along the insertion direction of the cables and the connected duct 200 can be configured.
[0028]
The connecting duct 200 can be bent along the direction parallel to the bottom plate 14 as a whole. However, since the connecting shaft 26 is provided at two locations of the base portion and the upper end portion of the inner wall, the connecting duct 200 is orthogonal to the bottom plate 14. Bending along the direction is restricted.
The connecting lid 50 is attached to the main body 10 of the unit duct 100 by fitting the fitting shaft 62 into the fitting recess 18 provided at the upper end of the wall 12, and the cables are opened at the upper end of the wall 12. To prevent falling off.
[0029]
A main body side engaging portion 20 is formed in a protruding manner on the outer surface of the bottom portion of the main body portion 10 of the unit duct 100, and a pair of lids that can be engaged with the main body side engaging portion 20 are formed on the connecting lid 50. Since the side engaging portion 54a is provided, the lid side engaging portion 54a of the lower unit duct 100 and the main body side engaging portion 20 of the upper unit duct 100 can be engaged vertically. That is, a plurality of connected ducts 200 can be stacked and used integrally.
[0030]
That is, the connecting lid 50 for preventing the cables from falling off also serves as a member for connecting the unit ducts 100 up and down. No connecting member is required.
In addition, since the connecting lid 50 also serves as a member for connecting up and down, it is possible to prevent the vertical dimension from becoming large during the vertical connection, thereby saving space.
[0031]
Moreover, the ceiling portion 52 of the connecting lid 50 and the lower surface of the bottom plate 14 of the main body portion 10 are both flat, and the ceiling portion 52 of the connecting lid 50 of the unit duct 100 that is lower when the unit ducts 100 are vertically stacked. Since the bottom plate 14 of the upper unit duct 100 can be brought into a close contact state, the above-mentioned space saving effect is further improved.
[0032]
As mentioned above, although embodiment of this invention was described according to the Example, this invention is not limited to such an Example, and it cannot be overemphasized that it can implement variously in the range which does not deviate from the summary of this invention.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory diagram of a main part of a unit duct of an embodiment, where (a) is a rear view, (b) is a plan view, (c) is a front view, (d) is a bottom view, and (e) is a bottom view. A side view and (f) are AA sectional views.
FIGS. 2A and 2B are explanatory views of a connecting lid of a unit duct of an embodiment, wherein FIG. 2A is a plan view, FIG. 2B is a front view, FIG. 2C is a bottom view, FIG. BB sectional drawing, (f) is AA sectional drawing.
FIG. 3 is an explanatory diagram of a state in which the unit ducts of the embodiment are connected along the insertion direction of the cables.
FIG. 4 is an explanatory diagram of a state in which unit ducts of the embodiment are connected to each other in an up-down direction.
FIGS. 5A and 5B are explanatory diagrams of a connecting structure of unit ducts, in which FIG. 5A is an explanatory diagram of a connecting structure by connecting convex portions, and FIG. 5B is an explanatory diagram of a connecting structure by connecting lids;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Main body part 12 Wall 14 Bottom plate 16 Middle wall 18 Fitting recessed part 20 Main body side engaging part 26 Connecting shaft 26a Connecting convex part 32 Connecting hole 32a Guide part 32b Storage part 32c Lead hole 32d Neck part 50 Connecting lid 52 Ceiling part (Upper surface) )
54a Lid side engaging part 62 Fitting shaft 100 Unit duct 200 Connection type duct

Claims (2)

In a connected duct configured by connecting a plurality of unit ducts that include a pair of walls arranged facing each other and a bottom plate connected to a lower end portion of the pair of walls and allowing cables to be inserted inside the walls,
An intermediate wall disposed between the pair of walls and erected on the bottom plate, wherein a connecting shaft provided with a connecting convex portion at a tip is provided at one end surface of the intermediate wall. And a neck part extending from the upper end part along the insertion direction of the cables, and the other end face of the inner wall being coaxial with each of the connection shafts and fitted with the connection convex part. An inner wall having a connecting hole provided with an accommodating portion that accommodates the connecting convex portion that has passed through the neck portion so as to be displaceable along a direction parallel to the bottom plate;
Engageable with a pair of fitting shafts that respectively fit into fitting recesses provided at the upper end portions of the walls and body-side engaging portions that protrude from the bottom outer surface of the unit duct. And a connecting lid having a pair of lid-side engaging portions. The connected duct according to claim 1,
Both of the upper surface of the connection lid and the outer surface of the bottom plate of the unit duct are planar .

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