Cable protection pipeline

Abstract

To cover an exposed cable directly from a lateral side irrespective of a length when covering the cable in order to protect the cable, and have flexibility to follow the cable even if the cable is curved.SOLUTION: A cable protection pipeline includes a covering tool body 1 formed into a cylindrical shape to cover a cable C. The covering tool body 1 is formed of openable / closable enclosures 2 that are provided in a plurality of sets continuously arranged to be assembled, and a fixing pin 40 that fixes an opening end of the closed enclosures 2. The enclosure 2 is formed by assembling a pair of an upper half-cut body 10 and a lower half-cut body 20, which have semicircular half-cut shapes, into a circular shape in an openable / closable manner, and causing the half-cut bodies 10, 20 arranged in a cylindrical direction to engage with each other in a slidable and bendable manner. In each of the half-cut bodies 10, 20, outer slide groove portions 11, 21 and inner slide groove portions 12, 22 that engage with each other in an inward / outward direction when the enclosures 2 adjacent in the cylindrical direction are slidable in the cylindrical direction, are arranged back and forth in the cylindrical direction, and the fixing pin 40 is mounted across both the half-cut bodies 10, 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a flexible cable protection conduit that allows partial repair or connection of a protection conduit that protects various cables, for example, for power or communication, that are laid down. [Background technology]

[0002] Cable protection tubes made of flexible tubes wound with spirally shaped metal strips have been used in a wide range of applications, including earthquake-resistant reinforcement of cable conduit entrances such as those at building entrances, handholes, and manholes, earthquake-resistant reinforcement of cable at expansion pipes and joints attached to bridges, reinforcement of conduit entrances where manholes are at risk of floating or sinking due to liquefaction, and protection and strength maintenance of exposed cable sections. Furthermore, because this type of flexible tube is flexible, it has also been used to prevent ground subsidence, for example, by connecting the conduit material that stores and covers cables to the underground box wall, and by providing various devices and methods for slidability and flexibility at the end of the conduit material to accommodate a certain degree of expected movement and deflection at the connection points, taking into account subsidence that may occur at the connection points after installation.

[0003] On the other hand, cable protection pipes that are installed to protect and interiorize various cables for wiring can be damaged or broken even partially not only due to the above-mentioned measures against ground subsidence, but also due to earthquakes, accidents, etc. Demand for cable protection pipes is increasing, as new cable protection pipes are installed as new protective measures against such existing cable protection pipes and cable damage, or existing cable protection pipes are repaired when damaged.

[0004] For example, when various cables are routed, they may be routed in a curved path to avoid obstacles, leaving them exposed and unable to be covered by a straight protective tube. Even if a cable is covered by a protective tube, there may be a step between the protective tube and the protective trough, leaving the cable itself exposed. Even when a cable is simply covered by a synthetic resin protective tube, the protective tube may be damaged or destroyed by external forces, such as cutting with a blade or impact. Even when a cable is covered by a protective tube, its deterioration may mean that it no longer provides sufficient protection for live cables. Furthermore, the protective tube itself may be partially damaged by external impacts, vandalism, or other external causes. Damage to the protective tube itself may not only affect the cable itself, but also the cable itself, requiring partial repair of the missing protective tube along with rerouting the cable. Furthermore, cables are extremely important as lifelines for maintaining electricity, communications, power, and other services, and therefore require adequate protection to maintain these services.

[0005] For this reason, in order to protect cables that are laid exposed or nearly so for various reasons and causes, a helical tube has been proposed, which is made by winding a strip-shaped plate material of a predetermined width, which is flat and approximately S-shaped in cross section, around an electric / communication cable in a spiral shape while engaging grooves located inside and outside with each other, thereby making it flexible and attachable. For example, as disclosed in Patent Document 1, a cable protection tube is wrapped around an existing cable in a disassembled state, and at the end of the cable, the gap of the cable protection tube itself on the terminal side, which is located on the inner side when assembled in a spiral shape, is fitted with the side of the cable, and in this state, it is wound around the existing cable in a spiral manner, and at the same time, the wound portion is engaged with the inside and outside of the cable protection tube itself, thereby assembling it as a protection device formed into a helical tube.

[0006] Furthermore, a mounting rotation device for rotating and winding a helical tube around an existing cable has been proposed in Patent Document 2. This mounting rotation device involves arranging a strip-shaped plate material at one end opening of a helical tube that has been once disassembled at the end of the helical tube so as to cover the existing cable, and then rotating a crimping and rotation auxiliary tool that is detachably fitted to the other end opening of the helical tube with a rotation operating tool, thereby successively winding the helical tube around the cable, thereby enabling reassembly. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent No. 4490326 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-188970 Summary of the Invention [Problem to be solved by the invention]

[0008] However, the assembly method of Patent Document 1 requires the worker to rotate the spiral tube manually, which requires holding the circumference of the spiral tube, resulting in tedious work and a significant physical burden. Even the installation rotation device proposed in Patent Document 2, which aims to improve this, requires manual operation of the handle to rotate the rotation operating tool, making it difficult to reduce the physical burden on the worker and also difficult to prepare a power source on-site. This work is particularly time-consuming and troublesome when the wiring path to be covered is long or there are many cables.

[0009] The present invention was created in consideration of the various circumstances that existed in the past as described above, and aims to provide a cable protection conduit that can be used to cover various cables in places where they are exposed to protect them, regardless of their length, directly from the side of the area to be covered, and that is flexible enough to follow the curved shape of the wiring path even if it is curved, and that can not only protect exposed cables that have arisen due to changes in the wiring path or the like, but can also be used as a joint for connecting spiral tubes together. [Means for solving the problem]

[0010] In order to solve the above-mentioned problems, the present invention provides a cable protection conduit equipped with a cylindrical covering body 1 that covers the wired cable C or conduit, and the covering body 1 consists of an openable and closable surrounding body 2 assembled in multiple sets that are arranged continuously along the wiring direction, and a fastening pin 40 that fastens the open ends of the closed surrounding body 2, and the surrounding body 2 is characterized in that a pair of semicircular upper half bodies 10 and lower half bodies 20 that are split in half are combined in a circular shape that can be opened and closed, and these upper half bodies 10 and lower half bodies 20 are arranged adjacent to each other in the tubular direction along the wiring direction and are interlocked with each other so that they can slide and bend freely. The upper half body 10 and the lower half body 20 are each formed with outer slide groove portions 11, 21 and inner slide groove portions 12, 22 at the front and rear in the cylindrical direction, which are freely slidable in the cylindrical direction between adjacent surrounding bodies 2 in the cylindrical direction and engage in the inward and outward directions, and can be configured by forming continuous ring insertion groove portions 13, 23 spanning the half bodies 10, 20 on the outer surfaces of the parts that protrude outward when the half bodies are arranged facing each other. The upper half body 10 and the lower half body 20 are each provided linearly along the circumferential direction of the surrounding body 2, and can be configured so as to be continuous with each other at a position along the cylindrical direction when the half bodies 10, 20 are arranged facing each other. The outer slide groove portions 11, 21 and the inner slide groove portions 12, 22 are each formed by arranging the half bodies 10, 20 facing each other in a circular shape and connecting them so that they can be opened and closed freely, with support portions 14, 24 arranged in a ring shape on the inside at one end of each half body 10, 20 without protruding outward, and the support portions 14, 24 can be configured so that support members 30 that connect each of the adjacent surrounding bodies 2 are inserted through them. The fastening pin 40 can be configured so that, at one end of a ring body 41 that is, for example, C-shaped and curved along the ring insertion grooves 13, 23, it has an L-shaped locking end 42 that is inserted and locked into a locking hole 16 provided at the end of the ring insertion groove 13 (23) of one of the half-bodies 10, 20, and at the other end it has a hook-shaped engaging end 43 that is engaged and fixed into an engaging hole 26 provided at the end of the other ring insertion groove 23 (13).

[0011] In the cable protection conduit of the present invention configured as described above, the covering device main body 1, in which multiple sets of surrounding bodies 2 each consisting of an upper half body 10 and a lower half body 20 slidably assembled so as to be openable and closable, is arranged in series, covers the wired cable C from its side and fastens and fixes it with fastening pins 40, thereby covering and protecting the cable C all around even when it is curved along the cable C. In the upper half body 10 and the lower half body 20, which are opposed to each other so as to be freely opened and closed by the axial support parts 14, 24 through which the axial support material 30 is inserted, the outer slide groove parts 11, 21 and the inner slide groove parts 12, 22 are each made continuous in the circumferential direction, and the outer slide groove parts 11, 21 and the inner slide groove parts 12, 22, which are interlocked in the inward and outward directions between adjacent surrounding bodies 2, are made freely slidable and bendable between the surrounding bodies 2, giving flexibility to the covering body 1. The upper half body 10 and the lower half body 20, which are pivotally supported by the pivotal support parts 14, 24 and the pivotal support member 30 and which can be opened and closed, are placed over the cable C, and after covering it, a fastening pin 40, which closes and fastens the opening of the enclosing body 2, has a locking end 42 at one end inserted and locked into the locking hole 16 and an engaging end 43 at the other end engaged and fixed into the engaging hole 26, thereby connecting and fixing the half bodies 10, 20 across and preventing them from being opened, disassembled or separated unexpectedly. The pivot support portions 14, 24 provided at one end of each of the upper half body 10 and the lower half body 20 are positioned inward without protruding outward, and the ring insertion groove portions 13, 23 accommodate and insert fastening pins 40 that fasten the upper half body 10 and the lower half body 20 together, so that no parts protrude outward after assembly into the surrounding body 2. [Effects of the Invention]

[0012] Since the present invention is configured as described above, it is possible to directly cover the side of the cable C at locations where various types of cables C are exposed, such as exposed locations caused by changes in the wiring route or other reasons, or gaps when connecting wiring tubes such as spiral tubes, regardless of their length, and even if the wiring route is curved, it is flexible enough to follow the curved shape, so it is possible to cover and protect the entire circumference of the exposed cable C. Furthermore, unlike conventional methods, there is the advantage that the covering and protection work can be carried out quickly without the need for troublesome work such as dismantling and reassembling the spiral tube.

[0013] That is, in the present invention, the cylindrical covering body 1 that covers the cable C is composed of openable and closable surrounding bodies 2 assembled in multiple sets arranged continuously along the wiring direction, and fastening pins 40 that fasten the open ends of the closed surrounding bodies 2, and the surrounding body 2 is made up of a pair of semicircular upper and lower halves 10 and 20 that are split into halves and assembled in a circular manner so that they can be opened and closed, and these upper and lower halves 10 and 20 arranged in the cylindrical direction are interlocked with each other so that they can slide and bend freely. This makes it possible to cover the cable C directly from the side, to accommodate curved shapes, and to improve workability.

[0014] In addition, the upper half body 10 and the lower half body 20 each have outer slide groove portions 11, 21 and inner slide groove portions 12, 22 that engage inward and outward directions with adjacent surrounding bodies 2 in the tubular direction along the wiring direction, and continuous ring insertion groove portions 13, 23 are formed on the outer surfaces of the outwardly protruding parts, spanning across the half bodies 10, 20.This allows the surrounding body 2 to slide freely in the tubular direction and bend at a predetermined angle when assembled, and can cover in a state that conforms to the wiring shape.

[0015] The outer slide groove portions 11, 21 and the inner slide groove portions 12, 22 are each arranged in a straight line along the circumferential direction of the surrounding body 2, and are continuous with each other when arranged facing each other, which facilitates assembly and combination between adjacent surrounding bodies 2 arranged in the tubular direction and also makes continuous assembly easy.

[0016] The upper half body 10 and the lower half body 20 are combined so as to be able to open and close freely by means of axial supports 30 inserted through the axial supports 14, 24 so as to form a circle, and are arranged consecutively in the cylindrical direction and interlock with each other, and by combining multiple sets depending on the length of the area to be covered, it is possible to prepare in advance to correspond to the length of the wiring area to be covered for the cable C. In addition, the axial supports 14, 24 are arranged in a ring shape on the inside at one end of each half body 10, 20 without protruding outward, and further, since the fastening pins 40 fit into the ring insertion grooves 13, 23, there are no protruding parts when the half body is in the covered state, making it easy to handle after the covering work.

[0017] The fastening pin 40 has an engaging end 42 at one end of the ring body 41 that is inserted and engaged in an engaging hole 16 provided at the end of the ring insertion groove portion 13 (23) of either the upper half body 10 or the lower half body 20, and an engaging end 43 at the other end that is engaged and fixed in an engaging hole 26 provided at the end of the other ring insertion groove portion 23 (13).This firmly maintains the cylindrical combination shape of the surrounding body 2 made up of the upper half body 10 and the lower half body 20, and will not disintegrate or separate even if the covering body 1 is bent.

[0018] The reference numerals in the above sections of the Means for Solving the Problems and the Effects of the Invention are used to facilitate reference to the components shown in the drawings. The present invention is not limited to the structure, shape, etc. shown by the reference numerals in the drawings and the description. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is an exploded perspective view showing an embodiment of the present invention; [Figure 2] FIG. [Figure 3] FIG. 10 is a cross-sectional view of the same cable when it is placed on the side of the cable and covered. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 10 is a cross-sectional view taken along the cylindrical direction, which is the wiring direction. [Figure 7] FIG. 11 is a cross-sectional view taken along a direction perpendicular to the pipe line. DETAILED DESCRIPTION OF THE INVENTION

[0020] An embodiment of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a cylindrical covering body that can be opened and closed. This covering body 1 is configured by combining multiple sets of surrounding bodies 2 arranged in series so that the length corresponds to the length of the cable C to be protected and covered at an exposed portion of a wiring path, for example, or the length can be set to correspond to each predetermined length for use at a joint or other location.

[0021] The covering device main body 1 itself has a circular cylindrical shape with an inner diameter slightly larger than the outer diameter of the cables C or conduits to be covered, for example, and is made up of a pair of semicircular upper and lower halves 10 and 20 that are combined in a circular shape so that they can be opened and closed freely, and these halves 10 and 20 are arranged in a cylindrical direction along the wiring direction and are mutually slidable and bendable to interlock with each other to form a surrounding body 2, which is continuously configured in multiple sets.

[0022] The surrounding body 2 is made up of a pair of upper half bodies 10 and lower half bodies 20 that are assembled to form the surrounding body 2. The halves 10, 20 are assembled so as to be able to swing open and close by pivotal supports 14, 24 formed at one end of each half body, and are engaged and closed by engaging means (15, 25) to be described later that are formed at the other end of each half body 10 and lower half body 20. The upper half body 10 and lower half body 20 are formed from, for example, casting or synthetic resin.

[0023] Each of the semicircular half bodies 10, 20 has outer slide groove portions 11, 21 and inner slide groove portions 12, 22 arranged at the front and rear in the cylindrical direction so that they can slide freely in the cylindrical direction between adjacent surrounding bodies 2 in the cylindrical direction and engage in the inward and outward directions, and also has ring insertion groove portions 13, 23 formed continuous across the half bodies 10, 20 on the outer surfaces of the parts that protrude outward when the half bodies are arranged facing each other.

[0024] The outer slide grooves 11, 21 protrude outward due to a recess in the inner surface of the half-split bodies 10, 20, the inner slide grooves 12, 22 protrude inward due to a recess in the outer surface of the half-split bodies 10, 20, and the ring insertion grooves 13, 23 are formed between the outer slide grooves 11, 21 and the inner slide grooves 12, 22 by a recess in the outer surface of the half-split bodies 10, 20 that protrudes slightly inward. When viewed in cross section, this arrangement forms a zigzag shape along the cylindrical direction, as shown in Figure 5.

[0025] These outer slide grooves 11, 21 and inner slide grooves 12, 22 are each provided linearly along the circumferential direction and are continuous with each other at respective positions along the cylindrical direction when the half-body halves 10, 20 are arranged facing each other. The ring insertion grooves 13, 23 are similarly provided along the circumference at approximately the center position between the outer slide grooves 11, 21 and the inner slide grooves 12, 22. Note that in the upper half-body 10 and the lower half-body 20, the outer slide grooves 11, 21 and the inner slide grooves 12, 22 are positioned in reverse on the left and right.

[0026] As shown in Figure 5, between adjacent surrounding bodies 2, the outer slide grooves 11, 21 and the inner slide grooves 12, 22, which have approximately the same groove width, are adapted to interlock inward and outward directions, and when sliding in the tubular direction, the sliding is stopped by the engagement of the respective groove walls. Also, the inner diameter of the outer slide grooves 11, 21 is slightly larger than the outer diameter of the inner slide grooves 12, 22, which allows for sliding when interlocked and slight tilting in the interlocked state, so that the entire covering body 1 assembled continuously in the tubular direction is, so to speak, bendable.

[0027] 6, the inner diameter of the outer slide groove portions 11, 21 is slightly larger than the outer peripheral diameter of the groove wall of the inner slide groove portions 12, 22, and the outer peripheral diameter of the inner slide groove portions 12, 22 is slightly smaller than the inner peripheral edge of the groove wall of the outer slide groove portions 11, 21. Even when the outer slide groove portions 11, 21 and the inner slide groove portions 12, 22 are engaged with each other, the adjacent surrounding bodies 2 can slide and bend freely between each other.

[0028] The half bodies 10, 20 are arranged facing each other in a circular configuration, and the pivotal supports 14, 24 that connect them so that they can be opened and closed are formed in a ring shape on the inside at one end of the half bodies 10, 20 without protruding outward. The surrounding bodies 2 are combined and arranged continuously in the cylindrical direction, and a pivotal support member 30 of a predetermined diameter is inserted through the pivotal supports 14, 24 in abutting, overlapping state in the cylindrical direction, allowing the half bodies 10, 20 to be opened and closed relative to each other. The pivotal support member 30 is flexible in response to the bending of the covering body 1.

[0029] The outer peripheral surfaces of the axial supports 14, 24 are formed into curved surfaces that are continuous with the outer peripheral surfaces of the half-split bodies 10, 20, so that no extra protrusions are formed outside the surrounding body 2. Furthermore, the axial supports 14, 24 are set and provided at positions that will leave gaps in front and behind them when they are stacked in the cylindrical direction, and by providing this gap between them and the end of, for example, an existing flexible conduit that is to be connected to the protective conduit of the present invention, it is possible to easily process the excess length at the end of the axial support member 30, and consideration is given to preventing the excess length from interfering with the existing conduit.

[0030] To engage the open ends of the surrounding body 2 closed by butting the upper half body 10 and the lower half body 20 together, an engagement means is formed by a protrusion 15 formed in a protruding shape at one of the open ends and a recess 25 formed in a recessed shape at the other open end.

[0031] After the covering body 1, which is made up of multiple sets of surrounding bodies 2, is closed and assembled into a circular tube, a fastening pin 40, which is arranged to straddle the open ends of each of the upper half body 10 and the lower half body 20, is inserted and accommodated, even if somewhat forcibly, into the ring insertion grooves 13, 23 to fit together. As shown in Figures 3 and 7, this fastening pin 40 has a C-shaped ring body 41 curved along the ring insertion grooves 13, 23, and at one end thereof is an L-shaped locking end 42 which is inserted and locked into a locking hole 16 formed at the end of the ring insertion groove 13 (23) of one of the half bodies 10, 20, and at the other end thereof is a hook-shaped engaging end 43 which is engaged and fixed into an engaging hole 26 formed at the end of the other ring insertion groove 23 (13). This fastening pin 40 is preferably formed from a wire rod of a predetermined diameter which has a certain degree of elasticity.

[0032] Although not shown in the figure, this fastening pin 40 can be locked and engaged by inserting the locking end 42 into the locking hole 26 and the locking end 43 into the locking hole 16, and either form can be used in the same way.

[0033] Next, an example of assembly and use will be described. To form a set of enclosing bodies 2, upper half body 10 and lower half body 20 are pivotally supported by pivotal supports 14, 24 on pivotal support member 30 and assembled with their inner surfaces facing each other (see Figure 1). Then, depending on the length of the cable C to be covered, multiple sets of enclosing bodies 2 are inserted through pivotal support member 30 and assembled. By combining the outer slide grooves 11, 21 and the inner slide grooves 12, 22 of adjacent enclosing bodies 2 so that they interlock with each other internally and externally, multiple sets of enclosing bodies 2 are arranged in series and assembled into the covering device main body 1 (see Figure 2). At this time, when pivotally supported on pivotal support member 30 and arranged in series, each of the enclosing bodies 2 remains open.

[0034] Next, the enclosure 2 is directly placed over the cable C to be repaired or covered from the side (see FIG. 3), and the open enclosure 2 is closed by the engagement means (15, 25). After that, fastening pins 40 are forcibly attached to the outer surfaces of the upper half 10 and the lower half 20 of each enclosure 2 so as to surround them. The fastening pins 40 are inserted and engaged at their locking ends 42 into the locking holes 16, and then their engagement ends 43 are engaged with the locking holes 26, thereby securing each enclosure 2 in a state where the cable C is covered by the fastening pins 40 housed and inserted in the ring insertion grooves 13, 23 (see FIG. 4). If the cable C being routed is curved, the adjacent enclosures 2 can be bent to fit the curved shape (see FIG. 6). [Explanation of symbols]

[0035] C...Cable 1...Covering device body 2...Enclosing body 10...Upper half body 11...Outer slide groove 12...Inner slide groove 13...Ring insertion groove 14…Axis branch 15...Protrusion 16...Latching hole 20...Lower half body 21...Outer slide groove 22...Inner slide groove 23...Ring insertion groove 24…Axis branch 25...recess 26...Engagement hole 30...Axis support 40...Fastening pin 41...Ring body 42...Latching end 43…Engagement end

Claims

1. A cable protection conduit equipped with a cylindrical covering body that covers the cables or conduits that are wired, wherein the covering body comprises an enclosure that can be opened and closed freely and assembled in multiple sets that are arranged continuously along the wiring direction, and a fastening pin that fastens the open ends of the closed enclosure bodies, and the enclosure body is composed of a pair of semicircular upper and lower halves that are split into halves and combined in a circular manner that can be opened and closed freely, and these upper and lower halves that are arranged adjacent to each other in a cylindrical direction that follows the wiring direction are interlocked with each other so that they can slide freely and bend freely.

2. 2. A cable protection conduit according to claim 1, wherein the upper half body and the lower half body each have outer slide grooves and inner slide grooves arranged at the front and rear in the cylindrical direction, which are slidable in the cylindrical direction between the surrounding bodies adjacent in the wiring direction and engage in the inward and outward directions, and wherein continuous ring insertion grooves are formed across the half bodies on the outer surfaces of the outwardly protruding parts when the half bodies are arranged facing each other.

3. The cable protection conduit according to claim 1, wherein the outer slide groove portion and the inner slide groove portion are each provided linearly along the circumferential direction of the surrounding body and are continuous with each other at a position along the tubular direction when the half bodies are arranged facing each other.

4. 2. A cable protection conduit according to claim 1, wherein the upper half body and the lower half body are arranged in a circular shape facing each other, and a pivotal support portion that connects the half bodies so that they can be opened and closed is arranged in a ring shape on the inside at one end of each half body without protruding outward, and a pivotal support member that connects each of the adjacent surrounding bodies is inserted into the pivotal support portion.

5. 2. The cable protection conduit according to claim 1, wherein the fastening pin has, at one end of the ring body curved along the ring insertion groove, a locking end that is inserted into and locked into a locking hole provided at an end of the ring insertion groove of one of the half bodies, and at the other end, an engaging end that is engaged and fixed into an engaging hole provided at the end of the other ring insertion groove.

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