Raceway apparatus

Abstract

The present invention relates to a functional raceway installation device, characterized by comprising: an anchor (10) embedded and fixed in a hole (H) in the ceiling of a building; a threaded bolt (20) supported by the anchor (10); a hanger bracket (30) connected to the lower end of the threaded bolt (20), which is open downward and has a cross-section in the shape of "Π"; and a raceway unit (40) detachably supported by the hanger bracket (30) and receiving and supporting a plurality of cables.

Description

Technology Field

[0001] The present invention relates to a raceway installation device for supporting and organizing power cables or communication cables, and more specifically, to a functional raceway installation device that allows a long raceway unit to be easily installed on a high ceiling and can be quickly detached for maintenance as needed. Background Technology

[0002] A raceway is a long structure installed exposed on the ceiling of a building to align and protect power or communication cables, and is implemented by connecting multiple raceways of a certain length using joiners.

[0003] Since the raceway is suspended from the ceiling, for installation, the worker climbs a ladder to form a hole in the building ceiling with a drill, embeds a known wedge anchor in the hole, and then strikes it with a hammer to temporarily fix the wedge in the hole, applies tension to the wedge anchor to firmly fix the wedge, connects a long threaded bolt to the wedge anchor using a connector, and connects the bottom of the threaded bolt to the raceway using an intermediate bracket.

[0004] However, when installing the raceway, the worker carried out a series of processes for a long time while climbing a ladder in an uncomfortable position looking up at the sky, such as embedding wedge anchors in holes formed at a height of several meters or more and temporarily fixing the wedges in the holes with a hammer weighing several kilograms, fixing the wedge anchors and threaded bolts using connectors, and additionally connecting intermediate brackets to connect the ends of the threaded bolts to the raceway. This process was very strenuous and caused neck disc problems, and the worker was exposed to dangerous situations while working on a ladder several meters high for a long time.

[0005] Meanwhile, as cracks developed inside the building over time, rainwater infiltrated through them; this water frequently leaked out through the boreholes where wedge anchors were fixed. In such cases, the rainwater leaking through the boreholes flowed down the raceway, causing electric shocks or communication malfunctions. The problem to be solved

[0006] The present invention was created to solve the above-mentioned problems and aims to provide a functional raceway installation device that allows a long raceway unit to be easily installed on a high ceiling and can be quickly detached for maintenance as needed.

[0007] Another objective of the present invention is to provide a functional raceway device capable of preventing leakage through the perforated holes even after a long period of time. means of solving the problem

[0008] To achieve the above objectives, the functional raceway installation device according to the present invention comprises: an anchor (10) embedded and fixed in a hole (H) in the ceiling of a building; a threaded bolt (20) supported by the anchor (10); a hanger bracket (30) connected to the lower end of the threaded bolt (20), which is open downward and has a cross-section in the shape of "Π"; and a raceway unit (40) detachably supported by the hanger bracket (30) and receiving and supporting a plurality of cables.

[0009] In the present invention, the anchor (10) comprises: an anchor body (11) formed by an expansion head (11a) that is fixed to the drilled hole (H) and has an inclined surface that expands upward, a rod (11b) formed at the bottom of the expansion head (11a) and having a flat surface, and a bolt (11c) formed at the bottom of the rod (11b); a metal expansion ring (12) fitted onto the rod (11b) and mounted on the expansion head (11a); an elastic tube (13) fitted onto the rod (11b) and the bolt (11c) on the upper side of the expansion ring (12); and a nut head (14) on which one side is screw-coupled to the bolt (11c) and the other side is screw-coupled to the threaded bolt (20).

[0010] In the present invention, the raceway unit (40) comprises: a first and second raceway (41) (41') composed of a pair of raceway side plates (41b) formed vertically on both sides of a raceway bottom plate (41a) and a raceway bending end (41c) bent inward downward from the top of the raceway side plate (41b); a joiner (42) composed of a pair of joiner side plates (42b) fitted inwardly into the raceway side plate (41b) and bending end (41c) and a joiner bottom plate (42a) connected to the bottom of the joiner side plate (42b); a plurality of bottom fastening ends (43) protruding from the surface of the joiner bottom plate (42a) and having screw holes formed on their inner circumference; and a push bolt (44) screw-coupled to the bottom fastening ends (43) to press the raceway bottom plate (41a). It includes a plurality of toothed sections (45) formed on the upper side of the joiner side plate (42b) and in close contact with the inner upper side of the raceway bending section (41c); and a cover (47) coupled to cover the upper side of the first and second raceways (41)(41').

[0011] In the present invention, the raceway unit (40) further includes a step-prevention projection line (46) that prevents a step from being formed between the first and second raceways (41)(41') when the joiner (42) is pre-assembled to the first and second raceways (41)(41').

[0012] The present invention further comprises: a lifting bracket (50) which is vertically connected to the inside of the hanger bracket (30) and has a pair of first and second support hooks (54) (54') formed at the bottom that are bent inwardly; and a lifting operating part (60) which is installed between the hanger bracket (30) and the lifting bracket (50) and operates the first and second support hooks (54) (54') to support the bottom corner of the raceway unit (40).

[0013] In the present invention, the hanger bracket (30) comprises a support body (31) in which the upper ends of the first and second main side plates (31a) (31a') are connected to a main connecting plate (31b) to form an overall "Π" cross-section, and first and second main holes (32) (32') formed in each of the first and second main side plates (31a) (31a'); The lifting bracket (50) comprises a lifting body (51) in which the upper ends of the first and second sub-side plates (51a) (51a') are connected to a sub-connecting plate (51b) to form an overall "Π" cross-section, first and second inclined plates (52) (52') that are obliquely connected to the lower ends of the first and second sub-side plates (51a) (51a') so as to protrude to both sides of the first and second main side plates (31a) (31a'), first and second side plates (53) (53') that are formed obliquely at the lower ends of the first and second inclined plates (52) (52') in a spreading direction and face the side of the raceway unit (40), and the lower ends of the first and second side plates (53) (53') that are bent in a direction facing each other to support the bottom corner of the raceway unit (40). It includes the first and second support hooks (54) (54').

[0014] In the present invention. The lifting bracket (50) further includes first and second circular cam grooves (55) (55') formed in the first and second sub-side plates (51a) (51a'), and the lifting operating part (60) includes first and second cams (61) (61') that are eccentrically fitted into each of the first and second circular cam grooves (55) (55'), a cam shaft (62) that connects the rotation axis between the first cam (61) and the second cam (61'), a first and second cam operating shaft (63) (63') formed on the first and second cams (61) (61') opposite the cam shaft (62) and rotatably penetrating the first and second main holes (32) (32') of the hanger bracket (30), and the first and second cam operating shafts (63) (63') on both sides of the hanger bracket (30) and It includes first and second handles (64) (64') that are axially coupled.

[0015] In the present invention, the lifting bracket (50) further includes first and second insulating layers (57)(57') formed on the facing surfaces of the first and second side plates (53)(53') and the first and second support hooks (54)(54') to insulate the raceway unit (40). Effects of the invention

[0016] Thus, according to the present invention, in the process of manufacturing the joiner (42), the push bolt (44) can be pre-assembled and fastened to the bottom fastening section (43), thereby eliminating the process of separately inserting the push bolt (44) into the bottom fastening section (43) during the process of connecting the first and second raceways (41) (41'), and thus making installation easier.

[0017] In addition, the raceway unit (40) can be easily installed on or removed from the hanger bracket (30) and the lifting bracket (50) by a simple operation of rotating the first and second handles (64) (64') while the raceway unit (40) is inserted between the first and second side plates (53) (53') and the first and second support hooks (54) (54'), thereby enabling easy maintenance.

[0018] And the anchor (10) has an expansion ring (12) and an elastic tube (13), so that the anchor (10) can be fixed to the drilled hole (H) by a simple operation of rotating the screw head (14) without the process of striking with a hammer, and after fixing, the drilled hole (H) can be sealed to prevent leakage through the drilled hole (H). Brief explanation of the drawing

[0019] FIG. 1 is a drawing for explaining the overall configuration of a functional raceway equipment device according to the present invention. FIG. 2 is a drawing showing an excerpt of the anchor of FIG. 1. FIG. 3 is a cross-sectional view of the anchor of FIG. 2 cut along line III-III, FIG. 4 is a drawing for explaining the state in which the anchor of FIG. 2 is temporarily inserted into the drilled hole. FIG. 5 is a drawing for explaining that by rotating the nut head of FIG. 4, the expansion ring is expanded and fixed in the bore hole, and the elastic tube seals the bore hole. FIG. 6 is a perspective view showing an excerpt of the raceway unit of FIG. 1. FIG. 7 is an exploded view of the raceway unit of FIG. 6. FIG. 8 is a cross-sectional view along line VIII-VIII of FIG. 6, FIG. 9 is a drawing for explaining the configuration of first and second cable alignment and fixing parts for aligning and fixing the position of a cable received in the joiner of FIG. 7. FIG. 10 is a perspective view illustrating the assembly structure of the hanger bracket, lifting bracket, raceway unit, and lifting operating part of FIG. 1. FIG. 11 is a disassembled perspective view showing the hanger bracket, lifting bracket, and lifting operating part of FIG. 10. FIG. 12 is a drawing for explaining a lifting operating part assembled between the hanger bracket and the lifting bracket of FIG. 11. FIG. 13 is a drawing for explaining that the first and second cams of FIG. 12 are positioned between the first and second circular cam grooves of the lifting bracket. FIG. 14 is a drawing for explaining that the first and second cam groove protrusions formed on the first and second cams of FIG. 13 are engaged with the first and second cam protrusions formed on the first and second circular cam grooves. FIG. 15 is a drawing for explaining the process of assembling the raceway unit of FIG. 6 to the lifting bracket. FIG. 16 is a drawing for explaining the raceway unit of FIG. 15 assembled to a lifting bracket. Specific details for implementing the invention

[0020] Hereinafter, a raceway facility that is easy to install, construct, and maintain according to the present invention will be described in detail with reference to the attached drawings.

[0021] In the following, terms designated as "upper" or "upper" may include not only those directly above in contact but also those above non-contact. Terms such as "first," "second," etc., may be used to describe various components, but the components should not be limited by these terms. Terms are used solely for the purpose of distinguishing one component from another. A singular expression includes a plural expression unless the context clearly indicates otherwise. Furthermore, when a part is described as "comprising" a component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Additionally, terms such as "...part," "module," etc., as used in the specification refer to a unit that performs at least one function or operation.

[0022] FIG. 1 is a drawing for explaining the overall configuration of a functional raceway equipment device according to the present invention.

[0023] As described above, the functional raceway device according to the present invention comprises: an anchor (10) embedded and fixed in a hole (H) in the ceiling of a building; a threaded bolt (20) supported by the anchor (10); a hanger bracket (30) connected to the lower end of the threaded bolt (20), which is open downward and has a cross-section in the shape of "Π"; and a raceway unit (40) detachably supported by the hanger bracket (30) and receiving and supporting a plurality of cables.

[0024] FIG. 2 is a drawing showing the anchor of FIG. 1, FIG. 3 is a cross-sectional view of the anchor of FIG. 2 cut along line III-III, FIG. 4 is a drawing to explain the state in which the anchor of FIG. 2 is temporarily inserted into the drilled hole, and FIG. 5 is a drawing to explain that the nut head of FIG. 4 is rotated so that the expansion ring is expanded and fixed in the drilled hole, and the elastic tube seals the drilled hole.

[0025] The anchor (10) comprises: an anchor body (11) formed by an expansion head (11a) that is fixed to a drilled hole (H) and has an inclined surface that expands upward, a rod (11b) formed at the bottom of the expansion head (11a) and having a flat surface, and a bolt (11c) formed at the bottom of the rod (11b); a metal expansion ring (12) fitted onto the rod (11b) and mounted on the expansion head (11a); an elastic tube (13) fitted onto the rod (11b) and the bolt (11c) on the upper side of the expansion ring (12); a nut head (14) on which one side is screw-coupled to the bolt (11c) and a threaded bolt (20) is screw-coupled to the other side; and a washer (15) fitted onto the bolt (11c) between the elastic tube (13) and the nut head (14).

[0026] The expansion head (11a) has an inclined surface formed such that its diameter increases as it extends upward, and functions to expand the expansion ring (12). The expansion ring (12) is formed by rolling an elastic metal plate into a tube shape, and a plurality of wedges (12a) are formed on the outer surface. The wedges (12a) are pressed into the inner surface of the drilled hole (H) when the expansion ring (12) is expanded radially by the expansion head (11a), thereby fixing the expansion head (11a) to the drilled hole (H).

[0027] The elastic tube (13) is linked to the nut head (14) advancing on the bolt (11c) to press the expansion ring (12) toward the expansion head (11a), and at the same time, it functions to expand so as to adhere to the inner surface of the drilled hole (H).

[0028] The nut head (14) is composed of a first screw groove (14a) formed on one side to which a bolt (11c) is screwed, a second screw groove (14b) formed on the other side to which a threaded bolt (20) is screwed, and a hexagonal surface (14c) formed on the outer surface that can be rotated by a tool such as a wrench.

[0029] In order to fix the anchor (10) to the hole (H) formed in the concrete ceiling, as shown in FIG. 4, the anchor (10) is inserted into the hole (H) such that the expansion head (11a) faces the inside of the hole (H). Then, when the nut head (14) is rotated, the bolt (11c) is pulled, and the elastic tube (13) presses the expansion ring (12). The expansion ring (12) is spread by the expansion head (11a) and is fixed in close contact with the inner surface of the hole (H), while the elastic tube (13) also expands and seals the hole (H). Accordingly, even if repeated impact force is applied from the outside, the anchor (10) does not detach from the hole (H), and furthermore, the hole (H) is perfectly sealed by the elastic tube (13), so the possibility of leakage through the hole (H) can be eliminated.

[0030] FIG. 6 is a perspective view showing the raceway unit of FIG. 1, FIG. 7 is an exploded perspective view of the raceway unit of FIG. 6, FIG. 8 is a cross-sectional view along line VIII-VIII of FIG. 6, and FIG. 9 is a drawing for explaining the configuration of the first and second cable alignment and fixing parts for aligning and fixing the position of the cable accommodated in the joiner of FIG. 7.

[0031] The raceway unit (40) comprises: a first and second raceway (41) (41') composed of a pair of raceway side plates (41b) formed vertically on both sides of a raceway bottom plate (41a) and a raceway bending end (41c) bent inward downward from the top of the raceway side plate (41b); a joiner (42) composed of a pair of joiner side plates (42b) fitted inwardly into the pair of raceway side plates (41b) and the bending end (41c), and a joiner bottom plate (42a) connected to the bottom of the joiner side plate (42b); a plurality of bottom fastening ends (43) protruding from the surface of the joiner bottom plate (42a) and having screw holes formed on their inner circumference; and a push bolt (44) that is screw-coupled to the bottom fastening ends (43) and presses the raceway bottom plate (41a); It includes a plurality of toothed sections (45) formed on the upper side of the joiner side plate (42b) and in close contact with the inner upper side of the raceway bending section (41c); a step-prevention projection line (46) that prevents a step from being formed between the first and second raceways (41)(41') when the joiner (42) is pre-assembled to the first and second raceways (41)(41'); a cover (47) coupled to cover the upper side of the first and second raceways (41)(41'); and first and second cable alignment fixing sections (48)(49) formed on the joiner bottom plate (42a) to align the positions of a plurality of cables arranged along the joiner (42) in a row and fix the aligned positions.

[0032] The bottom fastening section (43) is implemented by press forming so that it protrudes toward the upper side of the joiner bottom plate (42a).

[0033] The push bolt (44) is screw-coupled to the bottom fastening member (43) and presses or separates the raceway bottom plate (41a) depending on the degree of rotation, and a tip groove (44a) in the shape of a '??' or '+' is formed at the top to which a driver tip is coupled. The push bolt (44) is always distributed in a state where it is screw-coupled to the bottom fastening member (43), and accordingly, the cumbersome process of fastening the push bolt (44) to the bottom fastening member (43) at the site can be omitted.

[0034] The toothed section (45) has a structure in which a pointed tip is formed at the top of the joiner side plate (42b). The toothed section (45) is strongly attached to the inner surface of the raceway bending section (41c) to the extent that it is deformed when the push bolt (44) presses the raceway bottom plate (42a), and accordingly, even if a strong external force is applied to the first and second raceways (41)(41') connected to the joiner (42), the joiner (42) can be firmly fixed so that it does not separate from the first and second raceways (41)(41').

[0035] The step-prevention protrusion line (46) is formed to protrude longitudinally from the joiner bottom plate (42a) and the joiner side plate (42b) and is in close contact with the inner surface of the raceway bottom plate (41a) and the side plate (41b0). The step-prevention protrusion line (46) prevents the formation of a step between the first and second raceways (41)(41') when the joiner (42) is pre-assembled to the first and second raceways (41)(41'), thereby enabling the realization of a high-quality raceway unit.

[0036] The cover (47) is placed over the upper side of the first and second raceways (41)(41'). It is rounded in a concave shape so as to cover the upper end of the raceway bend (41c), which has rounded corners on both sides. On the inner side of the bottom, a pair of fitting wings (47a) are formed so as to be inserted between a pair of raceway bend (41c). By electrically isolating the first and second raceways (41)(41') from the outside, the cover (47) prevents electromagnetic waves generated from various surrounding electronic devices from entering the first and second raceways (41)(41'), and conversely, prevents electromagnetic waves generated from the cable contained in the cable (C) from being emitted to the outside, thereby preventing malfunctions caused by various radio wave interferences.

[0037] The first cable alignment fixing part (48) includes a first cut end (48a) that is cut from the joiner bottom plate (42a) and then bent upward, and a first bent end (48b) that is bent toward one of a pair of joiner side plates (42b) at the end of the first cut end (48a).

[0038] The second cable alignment fixing part (49) includes a second cut end (49a) that is cut from the joiner bottom plate (42a) and then bent upward, and a second bent end (49b) that is bent toward the other side of a pair of joiner side plates (42b) at the end of the second cut end (49a).

[0039] The first cut section (48a) and the second cut section (49a) are formed in a row, and accordingly, a plurality of first cables (not shown) can be arranged in alignment on the left side of the first and second cut sections (48a) (49a), and a plurality of second cables (not shown) can be arranged in alignment on the right side.

[0040] By means of the first and second cable alignment fixing parts (48)(49), when the first cut end (48a) is pushed in the direction of the left arrow, the first cable can be aligned and fixed so that it wraps around and bends, and the second cut end (49a) can be aligned and fixed so that it does not move, and when the second cut end (49a) is pushed in the direction of the right arrow, the second cable can be aligned and fixed so that it wraps around and bends, and the second cable can be aligned and fixed so that it does not move. That is, the first cable alignment fixing part (48) can align and fix the first cable to the left, and the second cable alignment fixing part (49) can align and fix the second cable to the right.

[0041] According to this raceway unit (40), the push bolt (44) can be assembled and fastened to the floor fastening section (43) during the manufacturing process of the joiner (42), thereby eliminating the process of separately inserting the push bolt (44) into the mount (43) during the process of connecting the first and second raceways (41) (41'), thus improving the ease of installation.

[0042] FIG. 10 is a perspective view illustrating the assembly structure of the hanger bracket, lifting bracket, raceway unit, and lifting operating part of FIG. 1, FIG. 11 is a perspective view illustrating the hanger bracket, lifting bracket, and lifting operating part of FIG. 10 in disassembly, FIG. 12 is a drawing for explaining the lifting operating part assembled between the hanger bracket and the lifting bracket of FIG. 11, FIG. 13 is a drawing for explaining that the first and second cams of FIG. 12 are positioned between the first and second circular cam grooves of the lifting bracket, FIG. 14 is a drawing for explaining that the first and second cam groove protrusions formed on the first and second cams of FIG. 13 are engaged with the first and second cam protrusions formed on the first and second circular cam grooves, FIG. 15 is a drawing for explaining the process of assembling the raceway unit of FIG. 6 to the lifting bracket, and FIG. 16 is a drawing for explaining that the raceway unit of FIG. 15 is assembled to the lifting bracket. It is a drawing.

[0043] The present invention further comprises: a lifting bracket (50) which is vertically connected to the inside of a hanger bracket (30) and has a pair of first and second support hooks (54) (54') formed at the bottom that are bent inwardly; and a lifting operating part (60) which is installed between the hanger bracket (30) and the lifting bracket (50) and operates the first and second support hooks (54) (54') to support the bottom corner of a raceway unit (40).

[0044] As shown in FIGS. 10 and 11, the hanger bracket (30) includes a support body (31) in which the upper ends of the first and second main side plates (31a) (31a') are connected to a main connecting plate (31b) to form an overall "Π" cross-section, and first and second main holes (32) (32') formed in each of the first and second main side plates (31a) (31a'). This hanger bracket (30) is supported by being suspended from a threaded bolt (20) by fastening a nut (N) to a threaded bolt (20) that penetrates the main connecting plate (31b).

[0045] The lifting bracket (50) comprises a lifting body (51) in which the upper ends of the first and second sub-side plates (51a) (51a') are connected to a sub-connecting plate (51b) to form an overall "Π" cross-section, first and second inclined plates (52) (52') that are obliquely connected to the lower ends of the first and second sub-side plates (51a) (51a') so as to protrude to both sides of the first and second main side plates (31a) (31a') of the hanger bracket (30), first and second side plates (53) (53') that are formed obliquely at the lower ends of the first and second inclined plates (52) (52') in a spreading direction and face the side of the raceway unit (40), and the lower ends of the first and second side plates (53) (53') that are bent in a direction facing each other to support the bottom corner of the raceway unit (40). It includes first and second support hooks (54)(54'), first and second circular cam grooves (55)(55') formed in the first and second sub-side plates (51a)(51a'), first and second cam groove protrusions (56)(56') formed on the inner upper side of the first and second circular cam grooves (55)(55'), and first and second insulating layers (57)(57') formed on the facing surfaces of the first and second side plates (53)(53') and the first and second support hooks (54)(54') to insulate the raceway unit (40).

[0046] The first and second inclined plates (52)(52') protrude to both sides of the first and second main side plates (31a)(31a') of the hanger bracket (30) when the lifting bracket (50) is lowered, and when the lifting bracket (50) is raised, they are pushed inward at the bottom of the first and second main side plates (31a)(31a'), thereby closing the gap between the first and second side plates (53)(53') and the first and second support hooks (54)(54').

[0047] The first and second side plates (53)(53') extend from the first and second inclined plates (52)(52') and have a shape that widens as it goes downward, and the first and second support hooks (54)(54') are formed at the bottom.

[0048] The first and second support hooks (54)(54') are normally protruded on both sides of the first and second main side plates (31a)(31a') by the first and second side plates (53)(53'), and accordingly, the raceway unit (40) can enter through the space between the first and second support hooks (54)(54'). At this time, the first and second support hooks (54)(54') are formed at the bottom of the first and second long plates (53b)(53b') and have a longer length compared to the first and second short plates (53a)(53a'), so the raceway unit (40) can be stably supported.

[0049] The first and second circular cam grooves (55)(55') are formed in the first and second sub-side plates (51a)(51a') and provide a space into which the first and second cams (61)(61'), which will be described later, are fitted.

[0050] The first and second insulating layers (57)(57') are formed on the facing surfaces of the first and second side plates (53)(53') and the first and second support hooks (54)(54'), thereby electrically insulating the raceway unit (40) and the lifting bracket (50) that are in close contact. Accordingly, communication signals generated from the cable mounted on the raceway unit (40) are prevented from being transmitted through the building or the ground through the raceway equipment of the present invention.

[0051] As shown in FIGS. 11 and 12, the lifting operating unit (60) comprises first and second cams (61) (61') that are eccentrically fitted into each of the first and second circular cam grooves (55) (55') of the lifting bracket, a cam shaft (62) that connects the rotation axis between the first cam (61) and the second cam (61'), first and second cam operating shafts (63) (63') formed on the first and second cams (61) (61') opposite the cam shaft (62) and rotatably penetrating the first and second main holes (32) (32') of the hanger bracket (30), first and second handles (64) (64') that are axially coupled to the first and second cam operating shafts (63) (63') on both sides of the hanger bracket (30), and formed on the upper end of the first and second cams (61) (61'). It includes first and second cam protrusions (66)(66') that are selectively engaged with first and second cam groove protrusions (56)(56').

[0052] The first and second cams (61)(61') are positioned inside the first and second circular cam grooves (55)(55') while being eccentrically connected to both ends of the cam shaft (62). Since the first and second cams (61)(61') are eccentrically connected to the cam shaft (62), when the cam shaft (62) rotates, the cam surfaces of the first and second cams (61)(61') move up and down inside the first and second circular cam grooves (55)(55'), thereby raising and lowering the lifting bracket (50).

[0053] The camshaft (62) includes a spline shaft (62a) formed on the rotation axis of the first cam (61), a spline tube body (62b) formed on the rotation axis of the second cam (61') and coupled to the spline shaft (62a) so as not to rotate, and a spring (62c) embedded in the spline tube body (62b) and applying elastic force in the direction in which the spline shaft (62a) protrudes from the spline tube body (62b). The camshaft (62) has a variable overall length as the spline shaft (62a) enters the spline tube body (62b), and even while it is variable, the spline shaft (62a) is elastically biased in the direction in which it protrudes from the spline tube body (62b) by the spring (62c).

[0054] This camshaft (62) includes a spline shaft (62a) and a spline tube (62b) that are spline-coupled, so that when the first cam (61) is rotated, the second cam (61') can be rotated together.

[0055] First and second bolt grooves (63a) (63a') are formed in the first and second cam operating shafts (63) (63'), and a bolt (B) passing through the first and second handles (64) (64') is fastened so that the first and second cam operating shafts (63) (63') can be rotated by the first and second handles (64) (64').

[0056] Meanwhile, when the lifting operating unit (60) is to be assembled to the lifting bracket (50) and the hanger bracket (30), the cam shaft (62) is shortened as shown in FIG. 12 to reduce the gap between the first and second cams (61) (61'). In this state, the first and second cam operating shafts (63) (63') can be inserted between the first and second sub-side plates (51a) (51a'), and then the first and second cam operating shafts (63) (63') are inserted into the first and second main holes (32) (32'), and the first and second cams (61) (61') are inserted into the first and second circular cam grooves (55) (55'), thereby assembling the lifting operating unit (60) to the lifting bracket (50) and the hanger bracket (30).

[0057] The lifting bracket (50) further includes first and second cam groove protrusions (56) (56') formed on the inner upper side of the first and second circular cam grooves (55) (55'), and the lifting operating part (60) further includes first and second cam protrusions (66) (66') formed on the upper side of the first and second cams (61) (61') and selectively engaged with the first and second cam groove protrusions (56) (56').

[0058] In this case, when the first and second cams (61)(61') are rotated in the state shown in FIG. 13, the lifting bracket (50) is raised by the eccentric cam surface as shown in FIG. 14. Afterward, when the first and second cam protrusions (66)(66') are fully raised, they engage with the first and second cam groove protrusions (56)(56'), and in this state, even if an external impact is applied, the lifting bracket (50) can maintain a stable raised state.

[0059] In order to assemble the raceway unit (40) to the lifting bracket (50) using this structure, the raceway unit (40) is inserted between the first and second side plates (53) (53') through the first and second support hooks (54) (54') as shown in FIG. 15. When the first and second handles (64) (64') are rotated in this state, as shown in FIG. 16, the lifting bracket (50) rises and the first and second inclined plates (52) (52') are pushed to the bottom of the first and second main side plates (31a) (31a'), and accordingly, the first and second side plates (53) (53') are closed and the first and second support hooks (54) (54') come into contact with the bottom corners of the raceway unit (40).

[0060] Thus, according to the present invention, in the process of manufacturing the joiner (42), the push bolt (44) can be pre-assembled and fastened to the bottom fastening section (43), thereby eliminating the process of separately inserting the push bolt (44) into the bottom fastening section (43) during the process of connecting the first and second raceways (41) (41'), and thus making installation easier.

[0061] In addition, the raceway unit (40) can be easily installed on or removed from the hanger bracket (30) and the lifting bracket (50) by a simple operation of rotating the first and second handles (64) (64') while the raceway unit (40) is inserted between the first and second side plates (53) (53') and the first and second support hooks (54) (54'), thereby enabling easy maintenance.

[0062] And the anchor (10) has an expansion ring (12) and an elastic tube (13), so that the anchor (10) can be fixed to the drilled hole (H) by a simple operation of rotating the screw head (14) without the process of striking with a hammer, and after fixing, the drilled hole (H) can be sealed to prevent leakage through the drilled hole (H).

[0063] The present invention has been described with reference to one embodiment illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Explanation of the symbols

[0064] 10 ... Anchor 11 ... Anchor body 11a ... expansion head 11b ... rod 11c ... bolt 12 ... expansion ring 12a ... wedge 13 ... elastic tube 13a ... retaining projection 14 ... nut head 15 ... washer 20 ... threaded bolt 30 ... hanger bracket 31 ... support body 31a, 31a' ... 1st and 2nd main side plates 31b ... main connecting plate 32, 32' ... 1st, 2nd Main Halls 40 ... Raceway Unit 41, 41' ... 1st and 2nd raceways 41a ... raceway floor plate 41b ... Raceway side plate 41c ... Raceway fold edge 42 ... Joiner 42a ... Joiner base plate 42b ... joiner side panel 43 ... floor fastening section 44 ... push bolt 44a ... tip home 45 ... toothed edge 46 ... anti-step protrusion line 47 ... cover 48 ... first cable alignment fixing part 48a ... 1st cut section 48b ... 1st bend section 49 ... 2nd cable alignment fixing part 49a ... 1st cutting section 49b ... 1st bend section 50 ... lifting bracket 51 ... elevator body 51a, 51a' ... 1st and 2nd sub-side plates 51b ... sub-connecting plate 52, 52' ... 1st and 2nd inclined plates 53, 53' ... 1st and 2nd side plates 54, 54' ... 1st and 2nd support hooks 55, 55' ... 1st and 2nd circular cam grooves 56, 56' ... 1st and 2nd cam groove protrusions 57, 57' ... 1st and 2nd insulation layers 60 ... lifting operating part 61, 61' ... 1st, 2nd cams 62 ... camshaft 62a ... spline shaft 62b ... spline pipe body 62c ... spring 63, 63' ... 1st and 2nd cam actuation shafts 64, 64' ... 1st and 2nd handles 66, 66' ... 1st and 2nd cam projections

Claims

Claim 1 An anchor (10) embedded and fixed in a hole (H) in the ceiling of a building; a threaded bolt (20) supported by the anchor (10); a hanger bracket (30) connected to the lower end of the threaded bolt (20), which is open downward and has a cross-section in the shape of "Π"; a raceway unit (40) that is detachably supported by the hanger bracket (30) and accommodates and supports a plurality of cables; a lifting bracket (50) connected vertically to the inside of the hanger bracket (30), having a pair of first and second support hooks (54) (54') formed at the bottom that are bent inward; It includes a lifting operating part (60) installed between the hanger bracket (30) and the lifting bracket (50) and which operates the first and second support hooks (54) (54') to support the lower corner of the raceway unit (40); and the hanger bracket (30) includes a support body (31) in which the upper ends of the first and second main side plates (31a) (31a') are connected to a main connecting plate (31b) to form an overall "Π" cross-section, and first and second main holes (32) (32') formed in each of the first and second main side plates (31a) (31a'); The lifting bracket (50) comprises a lifting body (51) in which the upper ends of the first and second sub-side plates (51a) (51a') are connected to a sub-connecting plate (51b) to form an overall "Π" cross-section, first and second inclined plates (52) (52') that are obliquely connected to the lower ends of the first and second sub-side plates (51a) (51a') so as to protrude to both sides of the first and second main side plates (31a) (31a'), first and second side plates (53) (53') that are formed obliquely at the lower ends of the first and second inclined plates (52) (52') in a spreading direction and face the side of the raceway unit (40), and the lower ends of the first and second side plates (53) (53') that are bent in a direction facing each other to support the bottom corner of the raceway unit (40). A functional raceway device characterized by including first and second support hooks (54)(54'). Claim 2 In claim 1, the anchor (10) comprises: an anchor body (11) formed by an expansion head (11a) that is fixed to the drilled hole (H) and has an inclined surface that expands upward, a rod (11b) formed at the bottom of the expansion head (11a) and having a flat surface, and a bolt (11c) formed at the bottom of the rod (11b); a metal expansion ring (12) fitted onto the rod (11b) and mounted on the expansion head (11a); an elastic tube (13) fitted onto the rod (11b) and the bolt (11c) on the upper side of the expansion ring (12); and a nut head (14) on which one side is screw-coupled to the bolt (11c) and the other side is screw-coupled to the threaded bolt (20). Claim 3 In claim 1, the raceway unit (40) comprises a first and second raceway (41) (41') composed of a pair of raceway side plates (41b) formed vertically on both sides of a raceway bottom plate (41a) and a raceway bent end (41c) bent downward inward from the top of the raceway side plate (41b); and a joiner (42) composed of a pair of joiner side plates (42b) fitted inwardly into the raceway side plate (41b) and the bent end (41c), and a joiner bottom plate (42a) connected to the bottom of the joiner side plate (42b). A functional raceway device characterized by comprising: a plurality of bottom fastening portions (43) protruding from the surface of the joiner bottom plate (42a) and having screw holes formed on their inner circumferences; a push bolt (44) that is screw-coupled to the bottom fastening portions (43) and presses the raceway bottom plate (41a); a plurality of toothed portions (45) formed on the upper end of the joiner side plate (42b) and in close contact with the inner upper end of the raceway bending portion (41c); and a cover (47) coupled to cover the upper side of the first and second raceways (41)(41'). Claim 4 In paragraph 3, the raceway unit (40) further comprises a step-prevention projection line (46) that prevents a step from being formed between the first and second raceways (41)(41') when the joiner (42) is pre-assembled to the first and second raceways (41)(41'), thereby forming a functional raceway device. Claim 5 delete Claim 6 delete Claim 7 In claim 1, the lifting bracket (50) further comprises first and second circular cam grooves (55) (55') formed in the first and second sub-side plates (51a) (51a'), and the lifting operating part (60) comprises first and second cams (61) (61') that are eccentrically fitted into each of the first and second circular cam grooves (55) (55'), a cam shaft (62) that connects the rotation axis between the first cam (61) and the second cam (61'), first and second cam operating shafts (63) (63') formed on the first and second cams (61) (61') opposite the cam shaft (62) and rotatably penetrating the first and second main holes (32) (32') of the hanger bracket (30), and on both sides of the hanger bracket (30) A functional raceway device characterized by including first and second handles (64) (64') that are axially coupled to first and second cam operating shafts (63) (63'). Claim 8 A functional raceway device according to claim 1, wherein the lifting bracket (50) further comprises first and second insulating layers (57)(57') formed on the facing surfaces of the first and second side plates (53)(53') and the first and second support hooks (54)(54') to insulate the raceway unit (40).

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