JP2012154106A - Ceiling structure and building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ceiling structure and a building for allowing a strong electric cable and a light electric cable to be separated from each other and inhibiting the temperature rise of the strong electric cable.SOLUTION: A ceiling part 20 has a ceiling frame 22 in which a heat insulating material 39, a power supply cable 42A, and a LAN cable 44A are provided, a partition member 40 for partitioning a space inside the ceiling frame 22 into a space on the side of the heat insulating material 39 and a space on the side of the power supply cable 42A, and a first sheath pipe 46 for isolating the power supply cable 42A from the LAN cable 44A. Thereby, the power supply cable 42A is separated from the LAN cable 44A by the first sheath pipe 46. Additionally, since the side of the heat insulating material 39 and the side of the power supply cable 42A are parted from each other by the partition member 40, when the power supply cable 42A is heated, the heat insulating material 39 keeps from inhibiting heat divergence, thus the temperature rise of the power supply cable 42A is inhibited.

Description

  The present invention relates to a ceiling structure and a building.

  In the unit house of Patent Document 1, a ceiling joist is installed between the large beams of the ceiling girders constituting the ceiling portion, and a ceiling back plate is laid on the upper surface of the ceiling joist.

JP-A-5-33407

  However, in the prior art disclosed in the above-mentioned Patent Document 1, the arrangement of cables and the arrangement of heat insulating materials between ceiling girders has not been disclosed.

  In view of the above facts, the present invention has an object to obtain a ceiling structure and a building capable of separating a high-power cable and a low-power cable and suppressing a temperature increase of the high-power cable.

  The ceiling structure according to the invention of claim 1 includes a ceiling frame provided with a heat insulating material, a high power cable, and a light power cable, a space inside the ceiling frame, a space on the heat insulating material side, and a space on the high power cable side. Partitioning means for partitioning, and a separating means provided in the space on the high-power cable side for isolating the high-power cable from the low-power cable.

  In the ceiling structure according to the first aspect of the present invention, since the high power cable is isolated from the weak power cable by the separating means, the electromagnetic wave acting on the weak power cable is reduced. Furthermore, since the space on the heat insulating material side and the space on the high power cable side are partitioned by the partitioning means, when the high power cable generates heat, the heat insulating material does not suppress the heat dissipation of the high power cable. Thereby, while separating a high electric cable and a weak electric cable, the temperature rise of a high electric cable can be suppressed.

  In the ceiling structure according to a second aspect of the present invention, the separating means is a first sheath tube that has an annular cross section and covers the outer periphery of the high voltage cable.

  In the ceiling structure according to the invention of claim 2, since the cross section of the high-power cable is circular, an extra gap is formed between the isolating means and the high-power cable as compared with the case where a square-shaped sheath tube is used. It will not be. Thereby, the space required for installation of a high power cable can be reduced.

  In the ceiling structure according to the invention of claim 3, the first sheath tube is divided into two in a direction orthogonal to the insertion direction of the high-voltage cable.

  In the ceiling structure according to the invention of claim 3, when inserting the high voltage cable into the first sheath tube, the high voltage cable is inserted into the first sheath tube by dividing the first sheath tube into two and sandwiching the high voltage cable. Therefore, compared with the structure which extrapolates a 1st sheath tube from the edge part of a high voltage cable, and moves to an installation position, the workability of installation of a 1st sheath tube can be improved.

  In the ceiling structure according to the invention of claim 4, at least a part of the outer peripheral surface of the light electrical cable is covered with a second sheath tube having a cross-sectional diameter larger than a cross-sectional diameter of the first sheath tube.

  In the ceiling structure according to the invention of claim 4, even if the cross-sectional shape of the first sheath pipe covering the high-power cable and the cross-sectional shape of the second sheath pipe covering the low-power cable are the same circle, the second sheath covering the low-power cable. Since the tube is larger, it is possible to distinguish the light electric cable. Thereby, at the time of installation of a high power cable and a light power cable, a high power cable and a light power cable can be distinguished.

  In the ceiling structure according to the invention of claim 5, the partition means is formed in a plate shape, and the separating means is attached to the partition means.

  In the ceiling structure according to the invention of claim 5, since the partitioning means has a plate shape, the separating means is attached to a flat surface. Thereby, compared with the case where an isolation means is attached to a curved surface, the attachment attitude | position to the partition means of an isolation means can be stabilized.

  In the ceiling structure according to the invention of claim 6, the light electrical cable is disposed in a space provided with the heat insulating material among the spaces partitioned by the partitioning means, and the partitioning means also serves as the separating means.

  In the ceiling structure according to the sixth aspect of the present invention, the low-power cable is disposed in one space (with heat insulating material) of the partitioning means. And since the high power cable is arrange | positioned in the other space, a partition means becomes an isolation means, and a high power cable is isolated from a weak power cable. Thereby, since the number of members used for a ceiling structure reduces, a ceiling structure can be comprised with few members.

  In the ceiling structure according to the invention of claim 7, the partition means includes a sound absorbing material or a sound insulating material.

  In the ceiling structure according to the seventh aspect of the invention, the partition means absorbs or blocks the sound propagating from the upper floor to the lower floor or from the lower floor to the upper floor, so that the habitability of the building can be improved. Moreover, since the number of members can be reduced compared with the structure which provides a sound-absorbing material or a sound-insulating material as a separate member other than a partition means, it can reduce cost.

  In the ceiling structure according to the invention of claim 8, the beam forming the ceiling frame is formed with a first through-hole through which the high-power cable is inserted and a second through-hole through which the low-power cable is inserted, Between the two ceiling frames arranged adjacent to each other, a plurality of connecting means for connecting the high-power cables and the low-power cables, respectively, are provided.

  In the ceiling structure according to the invention of claim 8, the installation of the high power cable and the low power cable is completed in each ceiling frame. As a result, high-power cables and light-power cables can be installed in the ceiling frame in advance in the factory.Furthermore, at the construction site, construction is completed simply by connecting the high-power cables to each other with the connection means. The construction of the ceiling structure can be easily performed as compared with the construction in which the high power cable and the light power cable are provided across the plurality of ceiling frames at the construction site.

  In the ceiling structure according to the ninth aspect of the present invention, the weak electric cable is provided with an electromagnetic shielding material that has an annular cross section and covers at least a part of the outer periphery of the weak electric cable.

  In the ceiling structure according to the invention of claim 9, when it is necessary to place the high power cable and the low power cable close to each other in the ceiling frame, the low power cable is provided with an electromagnetic wave shielding material. The electromagnetic wave which acts can be interrupted | blocked with an electromagnetic wave shielding material, and noise can be reduced.

  The building which concerns on invention of Claim 10 has the ceiling structure of any one of Claim 1-9, and the housing which supports the said ceiling frame.

  In the building according to the invention of claim 10, since the high-power cable and the low-power cable are separated and the temperature rise of the high-power cable is suppressed, the temperature rise of the building can be suppressed.

  As described above, according to the ceiling structure according to the first aspect of the present invention, it is possible to separate the high-power cable and the low-power cable and to suppress an increase in the temperature of the high-power cable.

  According to the ceiling structure according to the second aspect of the present invention, there is an excellent effect that it is possible to reduce the space required for installing the high power cable.

  According to the ceiling structure according to the third aspect of the present invention, there is an excellent effect that the workability of installation of the first sheath tube can be improved.

  According to the ceiling structure of the present invention as set forth in claim 4, it is possible to distinguish between the high power cable and the low power cable when installing the high power cable and the low power cable.

  According to the ceiling structure according to the fifth aspect of the present invention, there is an excellent effect that the attachment state of the separating means to the partitioning means can be stabilized.

  According to the ceiling structure according to the sixth aspect of the present invention, there is an excellent effect that the ceiling structure can be configured with a small number of members.

  According to the ceiling structure according to the seventh aspect of the present invention, it is possible to improve the habitability of the building, and further, it has an excellent effect that the number of members can be reduced and the cost can be reduced.

  According to the ceiling structure of the present invention as set forth in claim 8, there is an excellent effect that the ceiling structure can be easily constructed.

  According to the ceiling structure of the present invention as set forth in claim 9, there is an excellent effect that electromagnetic waves acting on the weak electric cable from the high electric cable can be blocked to reduce noise.

  According to the building which concerns on this invention of Claim 10, it has the outstanding effect that the temperature rise of a building can be suppressed.

It is a perspective view of the building concerning a 1st embodiment. It is sectional drawing (AA 'cross section of FIG. 1) of the ceiling structure which concerns on 1st Embodiment. (A), (B) It is a perspective view which shows the structure of the sheath tube which covers the high voltage cable which concerns on 1st Embodiment. (A) It is explanatory drawing which shows the connection state of the high electric cable in the ceiling structure which concerns on 1st Embodiment, and a weak electric cable. (B) It is explanatory drawing which shows the through-hole formed in the ceiling large beam in the ceiling structure which concerns on 1st Embodiment. (A) It is sectional drawing which shows the arrangement | positioning state of the high electric cable and the weak electric cable in the ceiling structure which concerns on 1st Embodiment. (B) It is a perspective view which shows the state which attached the high power cable in the ceiling structure which concerns on 1st Embodiment to the sound insulation material. It is sectional drawing of the ceiling structure which concerns on 2nd Embodiment. (A) It is sectional drawing (BB 'cross section of FIG. 6) which shows the arrangement | positioning state of the high electric cable and the weak electric cable in the ceiling structure which concerns on 2nd Embodiment. (B) It is explanatory drawing which shows the through-hole formed in the ceiling girder in the ceiling structure which concerns on 2nd Embodiment.

(First embodiment)
A ceiling structure and a building according to the first embodiment of the present invention will be described.

  FIG. 1 shows a building 10 of the first embodiment. As an example, the building 10 is composed of eight building units 12 and has two floors. The building unit 12 includes four columns 14 as an example of a frame, two sets of long and short ceiling beams 16 arranged in parallel to each other, and parallel to the ceiling beam 16 in the vertical direction (arrow Z direction in the drawing). It is configured to include two sets of long and short floor beams 18 arranged, and is configured as a ramen structure by welding the ends of each beam to the ceiling and floor joints. However, the unit configuration of the building unit 12 is not limited to the above, and may be another box-shaped frame structure.

  For the ceiling beam 16 and the floor beam 18, channel steel (grooved steel) having a U-shaped cross section is used. The ceiling girder 16 is assembled in a rectangular frame shape to form a ceiling frame 22, and the floor girder 18 is assembled in a rectangular frame shape to form a floor frame 24. The four pillars 14 described above are erected between the ceiling frame 22 and the floor frame 24, and the pillars 14 support the ceiling frame 22.

  Here, the ceiling frame 22 includes ceiling joint portions 26 at four corners, and ends of the ceiling beams 16 having different lengths are welded to the ceiling joint portions 26, respectively. Similarly, the floor frame 24 includes floor joints 28 at four corners, and the longitudinal ends of the floor beams 18 having different lengths are welded to the floor joints 28. And the building unit 12 is comprised because the upper and lower ends of the pillar 14 are rigidly joined by welding between the ceiling joint part 26 and the floor joint part 28 arranged facing the arrow Z direction. ing.

  In the following description, when it is necessary to distinguish between the members constituting the two adjacent building units 12, the numerals of the symbols of the members constituting one building unit 12 (hereinafter referred to as building unit 12A) A is added after, and B is added after the numeral of each member constituting the other building unit 12 (hereinafter referred to as building unit 12B) to distinguish the members of each building unit 12. Further, the digit direction of the building 10 is indicated by an arrow X, and the wife direction is indicated by an arrow Y.

  As shown in FIG. 2, in the building unit 12A on the first floor, a plurality of small pieces made of channel steel (grooved steel) having a U-shaped cross section are formed between a pair of ceiling frames 22 (in the arrow Y direction). A beam 36 is installed. A ceiling surface material 34 is attached to the lower side of the ceiling large beam 16A and the small beam 36 via a ceiling edge 32. The ceiling surface material 34 is provided across the building units 12 </ b> A and 12 </ b> B, and an inner wall material 38 is erected below the end of the ceiling surface material 34. In addition, although the floor material (illustration omitted) is attached to the floor beam 18 in the building unit 12, description is abbreviate | omitted.

  A partition member 40 as an example of a partition unit is attached to the upper surface of the small beam 36. As an example, the partition member 40 is made of plate-like rock wool and has a function as a sound absorbing material or a sound insulating material. Further, the partition member 40 extends to the vicinity of the ceiling beam 16A and covers the ceiling surface material 34 in a plan view of the ceiling frame 22A. And between the ceiling surface material 34 and the partition member 40, a portion excluding the ceiling field edge 32 and the small beam 36 is filled with a heat insulating material 39. As an example, the heat insulating material 39 is made of glass wool.

  On the other hand, on the upper surface of the partition member 40 (surface opposite to the heat insulating material 39 side), a power supply cable 42A for supplying power as an example of a high-power cable and a LAN cable 44A as an example of a light-power cable are placed. Has been. Here, the outer peripheral surface of the power feeding cable 42A is covered with a first sheath tube 46 as an example of a separating means for isolating the power feeding cable 42A from the LAN cable 44A.

  As shown in FIGS. 3A and 3B, the first sheath tube 46 is a cylindrical body made of a synthetic resin and having an annular cross section as an example, and a feed cable 42A is inserted into a through hole 46c formed in the center of the cross section. Is inserted so as to cover the outer periphery of the power feeding cable 42A. Further, the first sheath tube 46 has a semicircular cross-sectional shape including the arrow T direction in the in-plane direction in a direction (arrow T direction shown) orthogonal to the insertion direction (arrow S direction shown) of the power supply cable 42A. The first division unit 46a and the second division unit 46b are divided into two.

  The first divided portion 46a has a flat divided surface 46f, and the second divided portion 46b has a flat divided surface 46g. A plurality of columnar engaging portions 46d protruding in a direction perpendicular to the dividing surface 46f are formed on the dividing surface 46f, and the dividing surface 46g has a size capable of engaging with the engaging portion 46d. A plurality of engaged portions 46e that are concave portions are formed. In the first divided portion 46a and the second divided portion 46b, the radially outer end of the divided surface 46f and the radially outer end of the divided surface 46g are linearly connected (FIG. 3B). ), The engaging portion 46d is engaged with the engaged portion 46e by bringing the dividing surface 46f and the dividing surface 46g opposite to the connected portion into contact with each other, so that the first sheath tube 46 is It is supposed to be formed.

  FIG. 4A shows a state in which the ceiling frames 22A and 22B are viewed in a plan view, and only the ceiling beams 16A and 16B are shown in cross section. On the partition member 40, a power feeding cable 42A and a LAN cable 44A are arranged in parallel by being separated by a distance W. The power supply cable 42 </ b> A is attached to the partition member 40 by a fastener 66 (see FIG. 5B) described later while being inserted into the first sheath tube 46.

  On the other hand, a part of the LAN cable 44A is inserted into the through hole 48c of the second sheath tube 48 having an annular cross section, and the other portion is inserted into the through hole 54c of the third sheath tube 54 having an annular cross section. It attaches on the partition member 40 with the fastener 66 to do. The fastener 66 is attached to the third sheath tube 54. Here, the ceiling part 20 as an example of a ceiling structure is configured including the ceiling frame 22A, the partition member 40, and the first sheath tube 46.

  As shown in FIG. 5 (A), the diameter (outermost diameter) of the cross section orthogonal to the axial direction of the first sheath tube 46 is d1, and the diameter (outermost diameter) of the cross section orthogonal to the axial direction of the second sheath tube 48 is. ) Is d2, and the diameter d2 is set to satisfy d1 <d2. The second sheath tube 48 is divided into two parts, a first divided part 48a and a second divided part 48b, whose cross-sectional shape is semi-annular, and the first divided part 48a and the second divided part. By combining 48b, a through hole 48c is formed at the center of the cross section.

  As shown in FIG. 4 (A), the third sheath tube 54 is divided into a first divided portion 54a and a second divided portion 54b having a semicircular cross-sectional shape, similarly to the second sheath tube 48. By combining the first divided portion 54a and the second divided portion 54b, a through hole 54c is formed at the center of the cross section. Moreover, the 3rd sheath tube 54 is provided with the ferrite core (illustration omitted) as an example of the electromagnetic wave shielding material inside. The size of the outermost diameter of the third sheath tube 54 is substantially equal to the outermost diameter of the first sheath tube 46.

  On the other hand, a first through hole 56A and a second through hole 58A are formed in the ceiling beam 16A so as to penetrate in the direction in which the ceiling beam 16A and the ceiling beam 16B face each other (the arrow X direction in FIG. 1). In the ceiling beam 16B, a first through hole 56B and a second through hole 58B are formed through which the ceiling beam 16A and the ceiling beam 16B pass.

  As shown in FIG. 4 (B), the first through holes 56A and 56B have an inner diameter large enough to allow insertion of power supply cables 42A and 42B and a male connector 62A and a female connector 62B described later. The second through holes 58A and 58B have inner diameters that allow the LAN cables 44A and 44B and a male connector 64A and a female connector 64B described later to be inserted. Further, the first through holes 56A and 56B and the second through holes 58A and 58B are formed at intervals in the horizontal direction. As an example, the height positions of the first through holes 56A and 56B are It is above the height position of the two through holes 58A, 58B.

  Further, as shown in FIG. 4A, a male connector 62A is provided at the end of the feeding cable 42A on the ceiling large beam 16A side, and a male connector 62A is provided on the end of the LAN cable 44A on the ceiling large beam 16A side. A connector 64A is provided. On the other hand, a female connector 62B is provided at the end of the feeding cable 42B on the ceiling beam 16B side, and a female connector 64B is provided at the end of the LAN cable 44B on the ceiling beam 16B side.

  The male connector 62A and the female connector 62B are engaged to connect the power supply cables 42A and 42B, and the male connector 64A and the female connector 64B are engaged to connect the LAN cables 44A and 44B. Thereby, between the two ceiling frames 22A and 22B disposed adjacent to each other, the power feeding cables 42A and 42B and the LAN cables 44A and 44B are connected to each other.

  As shown in FIG. 5B, the first sheath tube 46 and the power supply cable 42 are attached on the partition member 40 by a fastener 66 as an example of attachment means. The fastener 66 includes a curved portion 66A having a semi-annular shape and an inner diameter slightly larger than the outermost diameter of the first sheath tube 46, and plate-like attachment portions 66B and 66C projecting outward from both ends of the curved portion 66A. Have. The attachment portions 66B and 66C are formed with through holes (not shown) through which the screws 68 are inserted.

  Here, the first sheath tube 46 and the feeding cable 42 are attached by sandwiching the first sheath tube 46 between the curved portion 66A and the partition member 40 and fastening the attachment portions 66B and 66C to the partition member 40 with screws 68. . If it is difficult to fasten the screws 68 to the partition member 40, without using the screws 68, a double-sided tape is attached to the back surfaces of the attachment portions 66 </ b> B and 66 </ b> C or an adhesive is applied to attach the fastener 66 to the partition member 40. It may be fixed on top.

(Function)
Next, the operation of the first embodiment will be described.

  As shown in FIG. 1, in the construction of the building 10, first, the ceiling frame 22, the floor frame 24, and the pillar 14 are assembled in the factory, then the ceiling portion 20 (see FIG. 2) is assembled, and the inner wall is further assembled. Install the panel and outer wall panel (not shown). Then, the building 10 is constructed by transporting and assembling the plurality of building units 12 to the construction site.

  Here, in the assembly of the ceiling portion 20 shown in FIG. 2, as shown in FIG. 5A, the cross section of the power feeding cable 42 </ b> A is circular, so that compared to the case where a square sheath tube is used, An extra gap is not formed between the first sheath tube 46 and the feeding cable 42A. Thereby, the space required for installation of the feeding cable 42A can be reduced.

  Further, as shown in FIGS. 3A and 3B, when the feeding cable 42A is inserted through the first sheath tube 46, the first sheath tube 46 is divided into two parts, a first divided part 46a and a second divided part 46b. Then, since the power supply cable 42A is inserted into the first sheath tube 46 by sandwiching the power supply cable 42A between them, for example, the first sheath tube 46 that is not divided from the end of the power supply cable 42A. Compared to the configuration of extrapolation and movement to the installation position, the workability of installation of the first sheath tube 46 can be improved.

  On the other hand, as shown in FIG. 5A, when the power supply cable 42A and the LAN cable 44A are installed in the ceiling portion 20, the cross-sectional shape of the first sheath tube 46 covering the power supply cable 42A and the second sheath tube covering the LAN cable 44A. Even if the cross-sectional shape of 48 is the same circle, the second sheath tube 48 covering the LAN cable 44A has a larger diameter, and therefore the LAN cable 44A can be identified. Thereby, the power supply cable 42A and the LAN cable 44A can be distinguished.

  As shown in FIG. 4A, in the ceiling portion 20, the installation of the power supply cables 42A and 42B and the LAN cables 44A and 44B is completed in the ceiling frames 22A and 22B. Accordingly, the power supply cable 42A and the LAN cable 44A can be installed in the ceiling frame 22A in advance in the factory, and the power supply cable 42B and the LAN cable 44B can be installed in the ceiling frame 22B. Further, at the construction site, the construction is completed simply by connecting the male connector 62A and the female connector 62B and connecting the power supply cables 42A and 42B, and connecting the male connector 64A and the female connector 64B and connecting the LAN cables 44A and 44B. The construction of the ceiling portion 20 can be easily performed as compared with the configuration in which one power supply cable or LAN cable is provided across the plurality of ceiling frames 22 at the construction site.

  Next, in the completed ceiling portion 20, as shown in FIG. 2, since the power supply cable 42A is isolated from the LAN cable 44A by the first sheath tube 46, electromagnetic waves acting on the LAN cable 44A are reduced. . Further, as shown in FIG. 4A, since the third sheath tube 54 including a ferrite core (not shown) is provided in the LAN cable 44A, electromagnetic waves acting on the LAN cable 44A from the power supply cable 42A can be ferrite. The noise of the LAN cable 44A can be reduced by blocking with the core.

  Moreover, in the ceiling part 20, as shown in FIG. 2, since the space of the heat insulating material 39 and the space on the power supply cable 42A side are partitioned by the partition member 40, the heat insulating material 39 is generated when the power supply cable 42A generates heat. This prevents the heat dissipation of the power supply cable 42A from being suppressed. Thereby, the power feeding cable 42A and the LAN cable 44A can be separated and the temperature rise of the power feeding cable 42A can be suppressed. And the temperature rise of the building 10 can be suppressed by suppressing the temperature rise of electric power feeding cable 42A, 42B.

  Furthermore, in the ceiling part 20, since the partition member is plate-shaped, the 1st sheath tube 46 is attached to a plane. Thereby, the attachment attitude | position to the partition member 40 of the 1st sheath tube 46 can be stabilized compared with the case where the 1st sheath tube 46 is attached to a curved surface.

  In addition, in the ceiling part 20, since the partition member 40 is made of a sound absorbing material or a sound insulating material, the partition member 40 is moved from the upper floor (second floor) to the lower floor (first floor) or from the lower floor (first floor) to the floor. Absorbs or blocks sound propagating up (2nd floor). Thereby, the habitability of the building 10 can be improved. Moreover, since the number of members can be reduced compared with the structure which provides a sound-absorbing material or a sound-insulating material as another member other than the partition member 40, it can reduce cost.

(Second Embodiment)
Next, the ceiling structure and building which concern on 2nd Embodiment of this invention are demonstrated. Note that the same reference numerals as those in the first embodiment are given to the members that are basically the same as those in the first embodiment described above, and the description thereof is omitted.

  FIG. 6 shows a building 80 according to the second embodiment. The building 80 includes building units 82A and 82B provided with ceiling beams 86A and 86B instead of the ceiling beams 16A and 16B of the building 10 (see FIG. 2) of the first embodiment. Further, in the building 80, the ceiling frames 92A and 92B are configured by a plurality of ceiling beams 86A and 86B, and the arrangement of the power supply cable 42A and the LAN cable 44A is different from that of the building 10. Here, a ceiling portion 90 as an example of a ceiling structure is configured including the ceiling frame 92 </ b> A and the partition member 40.

  As shown in FIG. 7A, in the ceiling 90, the LAN cable 44A is arranged in the space provided with the heat insulating material 39 in the space partitioned by the partition member 40. One sheath tube 46 (see FIG. 2) is not provided. That is, the power supply cable 42A is isolated from the LAN cable 44A by the partition member 40.

  In the ceiling portion 90, the power supply cable 42 </ b> A is attached on the partition member 40 by a fastener (not shown) in which the above-described fastener 66 (see FIG. 5B) is downsized. Further, most of the LAN cable 44 </ b> A is disposed below the heat insulating material 39 in the axial direction, and is inserted through a through hole 94 formed in the ceiling edge 32 below the small beam 36.

  On the other hand, as shown in FIG. 7B, the ceiling beam 86A has a first through hole 88 and a second through hole 89 that penetrate in the direction in which the ceiling beam 86A and the ceiling beam 86B (see FIG. 6) face each other. Is formed. The first through hole 88 has an inner diameter that allows the feeding cable 42A, the male connector 62A, and the female connector 62B (see FIG. 6) to be inserted. The second through-hole 89 has an inner diameter large enough to allow the LAN cable 44A, the male connector 64A, and the female connector 64B (see FIG. 6) to be inserted. Further, the first through-hole 88 and the second through-hole 89 are formed with an interval in the vertical direction. Here, as an example, the height position of the first through-hole 88 is the height of the second through-hole 89. It is above the position.

(Function)
Next, the operation of the second embodiment will be described. In addition, description of an effect | action is abbreviate | omitted about the site | part which uses the same member as 1st Embodiment.

  As shown in FIG. 6, in the ceiling portion 90 of the completed building 80, the LAN cable 44 </ b> A is disposed in one space (with the heat insulating material 39) of the partition member 40. Since the power supply cable 42A is disposed in the other space, the partition member 40 also acts as an isolating means, and the power supply cable 42A is isolated from the LAN cable 44A. Thereby, since the number of the members used for the ceiling part 90 decreases, the ceiling part 90 can be comprised with few members. Further, since the power feeding cable 42A is isolated from the LAN cable 44A by the partition member 40, electromagnetic waves acting on the LAN cable 44A are reduced.

  In the ceiling portion 90, as shown in FIG. 2, since the space of the heat insulating material 39 and the space on the power supply cable 42A side are partitioned by the partition member 40, the heat insulating material 39 is generated when the power supply cable 42A generates heat. This prevents the heat dissipation of the power supply cable 42A from being suppressed. Thereby, the power feeding cable 42A and the LAN cable 44A can be separated and the temperature rise of the power feeding cable 42A can be suppressed. And the temperature rise of the building 80 can be suppressed by suppressing the temperature rise of electric power feeding cable 42A, 42B.

  In addition, this invention is not limited to said embodiment.

  The partition member 40 may be made of glass wool, felt, a sound absorbing board, a soft fiber board, a foamed synthetic resin sheet, or the like in addition to rock wool. A sound absorbing material capable of absorbing sound at a specific frequency of low frequency or high frequency may be used. Alternatively, the partition member 40 may be a plate material having no sound absorbing function. Further, the height positions of the first through holes 56A and 56B may be aligned with the height positions of the second through holes 58A and 58B, and the height positions of the second through holes 58A and 58B are the same as the first through holes. It may be higher than the height positions of the holes 56A and 56B.

  As an example of the weak power cable, a telephone line cable may be used, and the same effect as the effect on the LAN cable 44A can be obtained. Further, the high-power cables and the low-power cables do not have to be one each as described in the first and second embodiments, and may be a plurality of two or more.

  In the ceiling portion 90 of the second embodiment, the first sheath tube 46 may be provided in the power supply cable 42A, and the second sheath tube 48 and the third sheath tube 54 may be provided in the LAN cable 44A.

10 Building 14 Pillar (an example of a frame)
20 Ceiling (an example of a ceiling structure)
22A Ceiling frame 39 Insulating material 40 Partition member (an example of partition means)
42A Feeding cable (an example of a strong power cable)
44A LAN cable (an example of a low-power cable)
46 1st sheath tube (an example of isolation means)
48 2nd sheath tube 54 3rd sheath tube (an example of electromagnetic shielding material)
56A First through hole 56B First through hole 58A Second through hole 58B Second through hole 62A Male connector (an example of connection means)
62B Female connector (an example of connection means)
64A male connector (an example of connection means)
64B female connector (an example of connection means)
80 Building 90 Ceiling (an example of a ceiling structure)
92A Ceiling frame

Claims (10)

A ceiling frame provided with a heat insulating material, a strong electric cable, and a weak electric cable;
Partition means for partitioning the space inside the ceiling frame into the space on the heat insulating material side and the space on the high power cable side;
Isolation means provided in the space on the high-power cable side and isolating the high-power cable from the low-power cable;
With ceiling structure.   2. The ceiling structure according to claim 1, wherein the isolating means is a first sheath pipe that has an annular cross section and covers an outer periphery of the high voltage cable.   The ceiling structure according to claim 2, wherein the first sheath tube is divided into two parts in a direction orthogonal to the insertion direction of the high-voltage cable.   4. The ceiling structure according to claim 2, wherein at least a part of the outer peripheral surface of the weak electric cable is covered with a second sheath pipe having a cross-sectional diameter larger than a cross-sectional diameter of the first sheath pipe.   The ceiling structure according to any one of claims 1 to 4, wherein the partition means is formed in a plate shape, and the separating means is attached to the partition means.   6. The device according to claim 1, wherein the low-power cable is disposed in a space provided with the heat insulating material among the spaces partitioned by the partitioning unit, and the partitioning unit also serves as the separating unit. The ceiling structure as described in.   The ceiling structure according to any one of claims 1 to 6, wherein the partition means includes a sound absorbing material or a sound insulating material. The beam forming the ceiling frame is formed with a first through hole through which the high power cable is inserted and a second through hole through which the low power cable is inserted,
The connecting device according to any one of claims 1 to 7, further comprising a plurality of connecting means for connecting the high-power cables and the low-power cables between the two adjacent ceiling frames. The ceiling structure described.   The ceiling structure according to any one of claims 1 to 8, wherein the weak electric cable is provided with an electromagnetic wave shielding material that has an annular cross section and covers at least a part of an outer periphery of the weak electric cable. The ceiling structure according to any one of claims 1 to 9,
A housing that supports the ceiling frame;
Having a building.

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