KR101077903B1 - Cable trough device - Google Patents

Abstract

The cable trough device includes a cable trough 2 having a trough body 4 and a lid 6, and a fixing mechanism for fixing the lid 5 to the trough body 4, wherein the fixing mechanism includes a trough body. A rib 12 protruding from the side wall 8 of the side wall 4, a U-shaped groove 14 formed on the upper surface of the lid 6, and a lead clamp interposed between the rib 12 and the U-shaped groove 14; And a lead 28 which can be inserted into a clip 18 installed in the rib 12 and a U-shaped groove 14 extending from the clip 18. Has

Description

Cable trough device {CABLE TROUGH DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable trough device used for laying cables such as communication cables and power cables.

In the case of laying cables along this track next to the railroad tracks, the cables are generally housed in conduits, and this type of conduit is constructed by arranging a number of cable troughs in a row.

Each cable trough includes a trough body that is open at both ends and an upper surface, respectively, and a lid that closes the surface opening of the trough body, and two adjacent cable troughs, i.e., the trough body, are connected to each other.

Generally, this type of cable trough is formed of concrete with the trough body and leads. However, the cable trough made of concrete is heavy and it is difficult to lay cables, that is, to construct a conduit.

For this reason, both the trough body and the lead of the cable trough disclosed in Japanese Patent Laid-Open No. 2000-55240 are made of plastic. The use of these plastic cable troughs facilitates the construction of conduits.

However, since the lead made of plastic is light in weight, the lead is likely to fall out of the trough body when subjected to an external force such as wind. Therefore, in the cable trough of the publication, the trough body and the lead can be coupled to each other.

More specifically, each side wall of the trough body is formed with rail protrusions on its surface, and these rail protrusions extend along the longitudinal direction of the side wall, that is, along the axial direction of the cable trough. On the other hand, rail grooves are formed on both side edges of the leads, respectively, and these rail grooves also extend in the axial direction of the cable trough, that is, in the longitudinal direction of the leads. These rail protrusions and rail grooves can be engaged with each other and this engagement allows slipping of the leads in the axial direction of the cable trough, but inhibits the lift of the leads in the trough body. Therefore, if the cable trough is provided with the above-described rail protrusion and rail groove, separation of the lead from the trough body is reliably prevented.

The above-mentioned rail protrusion and rail groove are molded together with the trough body and the lead, respectively, but the high molding precision is required for shaping of the rail protrusion and the rail groove. If the forming precision of these rail protrusions and rail grooves is insufficient, the insertion of the rail protrusions in the rail grooves, that is, the relative insertion of the rail protrusions with respect to the rail grooves, becomes impossible, or the rail protrusions in the rail grooves are generated, It is not possible to reliably couple the leads to the trough body.

On the other hand, the coupling of the lead to the trough body makes it possible to slide the lead on one side of the trough body so that the rail protrusion of the trough body is received in the corresponding rail groove of the lead. For this reason, once a conduit has been constructed with a number of cable troughs, it is impossible to remove any leads in the conduit from its trough body.

An object of the present invention is to provide a cable trough that can reliably and easily install a lead with respect to the trough body without the lead being detached from the trough body, and that can easily detach any lead in the conduit even after the aforementioned conduit has been constructed. To provide a cable trough device.

In order to achieve the above object, the cable trough device of the present invention is a cable trough made of plastic, the trough body having a lower wall and left and right sidewalls, both ends and the top of which is open and a lid for closing the top opening of the trough body. And a fixing mechanism for fixing the lead against the trough body, wherein the fixing mechanism includes at least one protrusion formed on one side of the trough body and the side wall of the trough body, and at least installed on the other side of the side wall and the lid. And one lead portion and a lead clamp spanning between the protrusion and the lock portion to releasably fix the lead to the trough body.

Since the lead clamp is a member separate from the cable trough, the lead clamp does not complicate the formation of the cable trough.

The lead is easily detachable from the trough body when the lead is released from the lead clamp. Therefore, even if a conduit for laying cables is constructed with a plurality of cable trough devices, any cable trough can be opened.

Specifically, the lead clamp includes a clip into which the protrusion can be inserted, and a hook that can be held by the clip on one side and hung on the locking portion on the other. Preferably, the protrusion is a rib formed on the side wall of the trough body, which rib extends in the axial direction of the trough body.

The above-mentioned clip consists of a U-shaped leaf spring, which has a base, a pair of arms extending from the base, into which a rib can be inserted, and at least one base end of the hook. A receptacle, the receptacle having open ends.

In this case, the clip may further include an insertion end formed by bending the distal end of each arm, and the spacing of these insertion ends is preferably gradually increased toward the distal end of the clip.

Furthermore, the hook has a pair of legs in which the base is rotatably installed in the receiving portion of the clip, and both ends connected to the ends of the pair of legs, respectively. It may include a U-shaped hook head extending in a direction orthogonal to the leg, in which case the locking portion comprises a groove formed in the surface of the lead, the groove is formed in a U shape so that the hook head can be inserted .

On the other hand, the hook may include a U-shaped hook head which is installed in the receiving portion of the clip so that both ends can be moved freely up and down, in this case the locking portion includes an L-shaped plate protruding to the side of the lid, this L-shaped The plate cooperates with the side of the lid to form a groove that can receive the hook head.

The above-described lead clamp can be easily provided since both are formed of two parts, a clip and a hook.

1 is a perspective view showing a part of the cable trough of the first embodiment.

Fig. 2 is a perspective view showing the lead clamp of the first embodiment.

FIG. 3 is a perspective view showing a part of the cable trough device with the lead clamp of FIG. 2. FIG.

4 is a side view showing the clip of the first modification.

5 is a side view showing a clip of a second modification.

6 is a side view showing a clip of a third modification.

7 is a side view showing a clip of a fourth modification.

8 is a side view showing a clip of a fifth modification.

9 is a perspective view showing a part of the cable trough device of the second embodiment.

FIG. 10 is a side view illustrating the clip of the lead clamp of FIG. 9. FIG.

The cable trough device of the first embodiment has a cable trough 2 shown in FIG. 1, which cable trough 2 comprises a trough body 4 and a lead 6. These trough bodies 4 and leads 6 are formed of plastic, preferably recycling plastics, for example by injection molding.

As clearly shown in FIG. 1, the trough body 4 has a substantially U-shaped cross section and includes left and right side walls 8 and a lower wall 10. Thus, the trough body 4 is open at both ends and the upper surface, respectively.

On the other hand, the lid 6 is formed in a plate shape spanning between the left and right side walls 8 of the trough body 4, and has a width equal to the width of the trough body 4. When mounted on these side walls 8, the top opening of the trough body 4 is closed. At this time, as shown in FIG. 1, both side surfaces of the lid 6 are flush with both outer wall surfaces of the trough body 4.

Moreover, the cable trough device of the first embodiment further includes a fixing mechanism for fixing the lid 6 to the trough body 4 when the lid 6 is placed on the trough body 4.

Firstly, the fixing mechanism comprises ribs 12 of the left and right sidewalls 8 of the trough body 4, which ribs 12 each protrude integrally from the outer wall surface of the corresponding sidewall 8. . More specifically, each rib 12 is located above the outer wall surface and extends along the axial direction of the trough body 4. On the other hand, the lid 6 includes a plurality of U-shaped grooves 14 at both edges of the upper surface thereof. Each U-shaped groove 14 is arranged in the transverse direction and has both ends open at the side ends of the lid 6.

The fixing mechanism further includes a plurality of lead clamps 16 as shown in FIG. The lead clamp 16 has a clip 18, into which the rib 12 of the trough body 4 described above can be inserted. More specifically, the clip 18 is formed by bending the leaf spring almost in a U shape and folding both ends of the leaf spring into the U shape. Therefore, the substantially U-shaped clip 18 is formed by a pair of arms 22 extending from the base 20 and the base 20 and facing each other and a triangle formed at the tip of the arms 22. It has a fixed end 24. The distance between these fixed ends 24 gradually widens toward the tip of the clip 18, and the minimum distance H between the fixed ends 22 is smaller than the thickness T of the rib 12 described above.

In addition, a half tube portion 26 is integrally formed on the arm 22 in one direction. The half tube portion 26 protrudes from the outer surface of the arm 22 and extends in the width direction of the arm 22.

The lead clamp 16 further includes a hook 28. The hook 28 is made of a wire spring, and the wire spring is formed by bending in the following order. First, the wire spring is bent in a U-shape, and both ends of the wire spring are formed with insertion ends 30 folded to face each other on a coaxial line. These insertion ends 30 are sized to be inserted into the half tube portion 26. The U-shaped wire spring is then folded at right angles, i.e., L-shaped, in its center to form the hook 28.

As a result, the hook 28 has a pair of hook legs 32 having the insertion end 30 at a proximal end and a hook head 34 connecting the tip ends of these hook legs 32. Has The hook head 34 is almost U-shaped and sized to be inserted into the U-shaped groove 14 of the lid 6 described above.

In laying the above-mentioned cables, many cable trough devices are prepared, and the trough bodies 4 of these cable trough devices are arranged in a line along a desired line. That is, both ends of the trough body 4 are formed of a rosewood and a male end, and adjacent trough bodies 4 are connected to each other by engaging the rosewood and the male end of each other. do.

When the arrangement of the trough body 4 is completed, a conduit with only an open upper side is constructed. Then, cables such as communication cables and power cables are laid in the conduit. After the laying of the cables is completed, a lead 6 is placed on each trough body 4 so that the conduit becomes a complete tunnel shape.

Then, as shown in FIG. 3, the clip 18 carries the rib 12 of the trough body 4 between the pair of fixed ends 24 with the elastic deformation of the pair of arms 22. Is installed in the rib 12 so that the is fitted. At this time, since the tip end of the pair of arms 22 is formed as the fixed end 24 described above, the clip 18 is easily fitted to the rib 12 by being fitted toward the trough body 4 from the outside of the rib 12. Can be installed.

Installation of such a clip 18 is performed at the position corresponding to the U-shaped groove 14 of the lid 6, respectively. And the hooks 28 are provided in the clips 18 on the ribs 12, respectively. Specifically, the pair of hook legs 32 of the hook 28 extends with elastic deformation, so that the insertion end 30 of each hook leg 32 is connected to the half tube portion of the clip 18 ( Is rotatably inserted into the end of 26). The hook 28 is then rotated toward the lid 6 about the insertion end 30 so that the hook head 34 is inserted into the U-shaped groove 14 of the lid 6. In addition, before attaching the clip 18 to the rib 12, the hook 28 may be previously engaged with the clip 18. As shown in FIG.

The hook 28 restrains the movement of the lid 6 in the vertical direction and its longitudinal direction, respectively. In addition, the hooks 28 provided at both edges of the lid 6 cooperate with each other to restrain the axial movement of the lid 6. As a result, the lid 6 is securely fixed to the trough body 4 by the lead clamp 16.

On the other hand, when the hook 28 is rotated in the opposite direction and the coupling of the hook head 34 and the U-shaped groove 14 of the hook 28 is released, the lead 6 can be separated from the trough body 4. .

The present invention is not limited to the cable trough device of the first embodiment described above, and various modifications are possible, and various modifications and other embodiments will be described below. On the other hand, in describing the modifications and the other embodiments, the same reference numerals are used for the members and the parts having the same function as the members and the parts of the apparatus of the first embodiment, and the description thereof will be omitted only.

The lid 6 may have a plurality of protrusions engageable with the hook head 34 of the hook 28 in place of the U-shaped groove 14. Specifically, these protrusions are disposed along the U-shaped grooves 14.

In addition, the side wall 8 of the trough body 4 may have a protrusion only at a position corresponding to the U-shaped groove 14 in place of the rib 12.

Moreover, the hook 28 may have a rod portion connecting the proximal ends of the pair of legs 32 in place of the pair of insertion ends 30.

4 shows a clip 18 of the first variant.

The clip 18 of FIG. 4 has a half tube portion 26 at the boundary position between the base 20 and the arm 22. The clip 18 of FIG. 4 may be mounted to the rib 12 with its half tube portion 26 positioned below the rib 12.

5 shows a clip 18 of a second variant.

The clip 18 of FIG. 5 has a half tube portion 26 at its base 20, which half tube portion 26 is disposed on the centerline CL between the arms 22. The clip 18 of FIG. 5 can be mounted to the rib 12 with the arm 22 on its upper side, and handling thereof becomes easy.

6 shows a clip 18 of a third variant.

The clip 18 of FIG. 6 differs from the clip 18 of FIG. 5 only in that the half tube part 26 is out of the center line CL. In this case, even if the precision of shaping | molding of the cable torp 2 worsens, only the clip 18 of FIG. 6 is installed in the rib 12 upside down, and this clip 18 is provided with respect to the U-shaped groove | channel 14. This has the advantage of enabling the insertion of the hook head 34. Therefore, the clip 18 of FIG. 6 is excellent in correspondence with the dimensional precision of the cable trough 2.

7 shows a clip 18 of a fourth variant.

The clip 18 of FIG. 7 has half tube portions 26 on both arms 22, respectively. In this case, the clip 18 of FIG. 7 may be installed in the rib 12 with the arm 22 upward, as in the clip 18 of FIG. 5.

8 shows a clip 18 of a fifth modification.

The clip 18 of FIG. 8 has a 3/4 tube portion 36 in place of the half tube portion 26. Since the opening of the 3/4 tube portion 36 is narrower than that of the half tube portion 26, the insertion end 30 of the hook 28 does not escape from the 3/4 tube portion 36. In other words, the hook 28 is always coupled to the clip 18 of FIG. The three quarter tube portion 36 is also replaceable with the half tube portion 26 of the first and modifications described above.

In detail in this regard, the clip 18 and the hook 28 are stored separately or in the state of the lead clamp 16 in which the hook 28 is coupled to the clip 18. This type of storage is selected according to the type of cable laying work or the working environment.

9 shows a cable trough device according to a second embodiment.

In the cable trough device of FIG. 9, the rib 12 is formed on the upper side of the side wall 8 in the trough body 4 so that the top surface of the rib 12 and the top surface of the side wall 8 are the same. . In addition, the lid 6 of FIG. 9 has an L-shaped plate 38 instead of the U-shaped groove 14. The L-shaped plate 38 is formed integrally with the side wall of the lid 6 and has a lower wall 40 protruding from the side wall of the lid 6 and a side wall 42 parallel to the side wall of the lid 6. do. Thus, the L-shaped plate 38 cooperates with the side wall of the lid 6 to form the locking groove 44, which extends along the side wall of the lid 6.

On the other hand, the clip 18 of the lead clamp 16 has a protruding portion 46 instead of the tubular portions 26 and 36 described above. The protruding portion 46 is formed integrally with the base 20 of the clip 18 and forms a rectangular groove 48 extending in the clip 18 in the width direction of the clip 18.

In addition, the hook 50 of the lead clamp 16 is different from the hook 28 described above, and does not have a pair of legs 32. That is, the hook 50 has the aforementioned U-shaped hook head 34 and a pair of insertion ends 30 directly formed at both ends of the hook head 34. As shown in FIG. 10, the insertion end 30 is freely movable up and down in the rectangular groove 48 of the clip 18.

According to the cable trough device of the second embodiment, after the clip 18 is installed in the rib 12 of the trough body 4, the hook 50, that is, the bridge portion 34 of the hook head 34, has a lid 6. The lead 6 is fixed to the trough body 4 using the lead clamp 16 by being accommodated in the rectangular groove 48 on the side.

In this case, the hook head 34 and the L-shaped plate 37 cooperate with each other to restrain the movement of the lid 6 in the longitudinal direction and the vertical direction of the lid 6. In addition, the clips 18 arranged on both sides of the lid 6 cooperate with each other to restrain the movement of the lid 6 in the width direction of the lid 6.

On the other hand, when the lid 6 is released from the lead clamp 16, the hook head 34 is first lifted upward, and the bridge portion 34a rotates over the L-shaped plate 38. do.

Since the insertion end 30 of the hook head 34 is free to move up and down within the rectangular portion 48, it is easy to engage and disengage the hook head 34 to the locking groove 44.

On the other hand, in place of the hook 50 or the pair of insertion ends 30 of the second embodiment, a rod portion connecting both ends of the hook head 34 may be provided.

As described above, in any of the cable trough devices of the first embodiment, the first to fifth modified examples, and the second embodiment, the device can securely secure the lid 6 to the trough body 4. Further, only by releasing the engagement of the hook head 34 to the U-shaped groove 14 or the rectangular portion 48 of the lid 6, the lid 6 can be easily separated from the trough body 4. have. That is, any cable trough 2 in the conduit can be easily opened.

Since the use of the lead clamp 16 described above does not require high precision for forming the ribs 12, the U-shaped grooves 14 and the rectangular portions 48, the molding cost of the cable trough 2 does not significantly increase. .

Further, in the cable trough device of the present invention, a protrusion corresponding to the rib 12 is formed in the lid 6, and the U-shaped groove 14 or the locking portion 44 corresponding to the groove is provided with the trough body 4. It may be formed on the side wall 8 of the.

Further, the tubular portion 26 described above is formed on the arm 22 or base 20 of the clip 18, but the tubular portion 2 may be formed on both the arm 22 and the base 20.

Claims (8)

A cable trough made of plastic, comprising: a trough body having a lower wall, left and right sidewalls, open troughs at both ends and an upper surface thereof, a cable trough comprising a lid for closing the top opening of the trough body, and Has a fixing mechanism for fixing the lead, The fixing mechanism is Protrusions formed on the sidewalls of the trough body, A locking portion provided in the lead, and It is provided between the said projection and the said latching | locking part, Comprising: The lead clamp which opens the lead to the said trough body so that opening is possible, The lead clamp has a clip into which the protrusion can be fitted, and a hook that is rotatably attached to the clip and the other that is hooked to the locking portion, The protrusion has a rib formed on the side wall of the trough body, extending in the axial direction of the trough body, The clip is a cable trough device, characterized in that the hook is secured to the locking portion while the hook is rotated in the state of fixing the rib of the projection to fix the rib. A cable trough made of plastic, comprising: a trough body having a lower wall, left and right sidewalls, open troughs at both ends and an upper surface thereof, a cable trough comprising a lid for closing the top opening of the trough body, and Has a fixing mechanism for fixing the lead, The fixing mechanism is Protrusions formed on the sidewalls of the trough body, A locking portion provided in the lead, and It is provided between the said projection and the said latching | locking part, Comprising: The lead clamp which opens the lead to the said trough body so that opening is possible, The protrusion has a rib formed on the side wall of the trough body, extending in the axial direction of the trough body, The lead clamp has a clip into which the protrusion can be fitted, and a hook that is rotatably attached to the clip and the other that is hooked to the locking portion, The clip includes a base, a pair of arms extending from the base to insert the ribs, and at least one receiving portion to fit the hook proximal end, The accommodation portion is formed on at least one of the base and the arm of the clip, The hook has a pair of leg portions each rotatably installed in the receiving portion of the clip, and both ends connected to the ends of the pair of leg portions, respectively, the pair of leg portions Includes a U-shaped hook head extending in a direction orthogonal to And the locking portion includes a groove formed on an upper surface of the lead, the groove being formed in a U shape to fit the hook head. 3. The method of claim 2, The hook includes a U-shaped hook head in which both ends thereof are freely installed up and down in the receiving portion of the clip, And the locking portion comprises an L-shaped plate protruding from the side of the lid, the L-shaped plate cooperating with the side of the lid to form a groove for receiving the hook head. delete delete delete delete delete

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