Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/18—Means for suspending the supporting construction
  • E04B9/20—Means for suspending the supporting construction adjustable
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
  • E04B9/18—Means for suspending the supporting construction
  • E04B9/183—Means for suspending the supporting construction having a lower side adapted to be connected to a channel of the supporting construction

Definitions

• the present invention relates to a device for fixing objects to a ceiling, and more particularly to a device for fixing objects to a ceiling that is capable of conveniently mounting various objects to a supporting member protruding from a structure.
• a building is equipped with a so-called access ceiling.
• the access ceiling has a structure that empty space is formed to be accessed, in which pipes, wires, cables, ducts, and the like are installed, and a finishing material like a panel is installed to shield the space.
• various objects such as section steel bars, beams, carrying channels, pipes, wires, cables, and the like, to a structure, many kinds of devices for fixing the objects to the ceiling are used.
• FIG. 1 shows the constitution of a conventional device for fixing objects to a ceiling.
• foundation bolts 10 are fixed to a structure 2 constituting a ceiling of a building.
• the foundation bolts 10 are arranged apart from each other at a predetermined distance.
• Hangers 20 are mounted to the respective foundation bolts 10 by first nuts 12 and second nuts 14 being coupled to the foundation bolts 10.
• Each of the hangers 20 is formed with a hole 22, through which the corresponding foundation bolt 10 is inserted, at an upper portion, and includes an U-shaped holding portion 24, which has an opening 26, at a lower portion.
• a section steel bar 6 (an example of an object 4) passes through the opening 26 of the holding portion 24 of the hanger 20, so that a portion of the section steel bar 6 is supported by the hanger 20.
• a pin 30 is inserted through the upper portion of the holding portion 24 so as to prevent the separation of the section steel bar 6 by blocking the opening 26. Disclosure of Invention
• the first nut 12 is first coupled to the foundation bolt 10, and the foundation bolt 10 is inserted through the hole 22 of the hanger 20. Then, the second nut 14 is coupled to the foundation bolt 10 to fixedly interpose the upper portion of the hanger 20 between the first nut 12 and the second nut 14. Therefore, the conventional device for fixing objects to a ceiling has problems that the installation process is very troublesome, time consuming, and complicated. Also, in order to prevent the separation of the pin 30 which is inserted through the holding portion 24 of the hanger 20, an end portion of the pin 30 should be bent using a tool, such as pincers or a nipper, that makes the installation process more troublesome and complicated.
• a tool such as pincers or a nipper
• the first nut 12 and the second nut 14 are easily loosened from the foundation bolt 10 by vibration exerted on the foundation bolt 10 and the hanger 20. If the second nut 14 is loosened from the foundation bolt 10, the hanger 20 fixed to the foundation bolt 10 descends. When both end portions of the section steel bar 6 are supported by two hangers 20, if the second nut 14 is loosened and the hanger 20 descends, the section steel bar 6 becomes unbalanced. In a severe case, if the hanger 20 is separated from the foundation bolt 10, an accident where the section steel bar 6 falls down happens.
• the present invention has been made to solve the foregoing problems of the prior art, and it is an object of the present invention to provide a device for fixing objects to a ceiling that is capable of conveniently and promptly mounting various objects to a supporting member protruding from a structure.
• the hanger is securely mounted to the supporting member by a clamping force of the clamp, thereby increasing reliability and safety.
• the hanger can also be mounted to the supporting member even when the supporting member has scars or burrs due to cutting, thereby increasing workability. Further, a worker working in a high place is able to have safe and optimum posture and actions without carrying additional tools for mounting the hanger to the supporting member.
• FIG. 1 is a perspective view illustrating a constitution of a conventional device for fixing objects to a ceiling
• FIG. 2 is a perspective view illustrating a constitution of a device for fixing objects to a ceiling in accordance with a first embodiment of the present invention
• FIG. 3 is an exploded perspective view illustrating a constitution of a device for fixing objects to a ceiling in accordance with a first embodiment of the present invention
• FIG. 4 is a front view illustrating the state that a clamp is located at a second position in a device for fixing objects to a ceiling in accordance with a first embodiment of the present invention
• FIG. 5 is a front view illustrating the state that a clamp is located at a first position in a device for fixing objects to a ceiling in accordance with a first embodiment of the present invention
• Fig. 6 is a sectional view taken along line VI - VI in Fig. 4;
• Fig. 7 is a sectional view taken along line VII - VII in Fig. 5;
• FIG. 8 is a sectional view illustrating an operation that a clamp moves between a third position and a fourth position in a device for fixing objects to a ceiling in accordance with a first embodiment of the present invention
• Fig. 9 is a perspective view illustrating a constitution of a device for fixing objects to a ceiling in accordance with a second embodiment of the present invention
• Fig. 10 is an exploded perspective view illustrating a constitution of a device for fixing objects to a ceiling in accordance with a second embodiment of the present invention
• Fig. 11 is a front view illustrating a constitution of a device for fixing objects to a ceiling in accordance with a second embodiment of the present invention
• FIG. 12 is a sectional view illustrating the state that a clamp is located at a first position in a device for fixing objects to a ceiling in accordance with a second embodiment of the present invention
• Fig. 13 is a sectional view illustrating the state that a clamp is located at a second position in a device for fixing objects to a ceiling in accordance with a second embodiment of the present invention
• Fig. 14 is a perspective view illustrating a constitution of a device for fixing objects to a ceiling in accordance with a third embodiment of the present invention
• Fig. 15 is a perspective view illustrating a clamp of a device for fixing objects to a ceiling in accordance with a third embodiment of the present invention
• Fig. 16 is a sectional view illustrating the state that a clamp is located at a first position in a device for fixing objects to a ceiling in accordance with a third embodiment of the present invention
• Fig. 17 is a sectional view illustrating the state that a clamp is located at a second position in a device for fixing objects to a ceiling in accordance with a third embodiment of the present invention.
• a device for fixing objects to a ceiling comprising: a supporting member which is protrudingly fixed to a structure; a hanger which includes a clamping portion having a first side plate, a second side plate arranged in parallel with the first side plate at a predetermined gap from the first side plate to accommodate the supporting member, and a connecting plate connecting the first side plate and the second side plate, the first side plate and the second side plate being respectively formed with a first operation hole and a second operation hole which are positioned opposite to each other, and a holding portion provided below the clamping portion and having an opening for accommodating the objects; a clamp which is fitted through the first operation hole and the second operation hole and has a knob at one end to be in contact with an outer surface of the first side plate, the clamp moving between a first position for providing a clamping force to the clamping portion to fix the clamping portion to the supporting member accommodated between the
• FIGs. 2 to 8 show a device for fixing objects to a ceiling in accordance with a first embodiment of the present invention.
• objects 4 such as section steel bars, beams, carrying channels, pipes, wires, cables, and the like can be mounted to a structure 2, such as a ceiling or column of a building.
• the device for fixing objects to a ceiling includes supporting members 110 which are protrudingly fixed to the structure 2.
• the supporting members 110 are configured as foundation bolts 112 that protrudingly fixed to a ceiling of a building (an example of the structure 2).
• the foundation bolts 112 are arranged at a predetermined distance therebetween.
• the supporting members 110 may be configured as stud bolts, stud pins, support bars, bosses or protrusions protrudingly formed at the structure 2, or the like.
• the device for fixing objects to a ceiling includes a hanger 120 which is mounted to each foundation bolt 112.
• the hanger 120 is made by press forming of a metal plate or die casting.
• the hanger 120 is formed with a C-shaped clamping portion 122 at an upper portion.
• the clamping portion 122 has a first side plate 126 and a second side plate 128 which are arranged in parallel with each other at a predetermined gap therebetween, so as to provide a space 124 in which the foundation bolt 112 is fitted.
• An end of the first side plate 126 is connected to an end of the second side plate 128 by a connecting plate 130.
• the first side plate 126 and the second side plate 128 are respectively formed with a first operation hole 132 and a second operation hole 134 at their central portions.
• the first operation hole 132 and the second operation hole 134 are positioned opposite to each other.
• the connecting plate 130 has a curved shape and is formed with a female screw 136 on its inner surface to be coupled with the foundation bolt 112.
• the hanger 120 is formed with a U-shaped holding portion 138 below the clamping portion 122.
• a section steel bar 6 (an example of the object 4) passes through the holding portion 138, so that a portion of the section steel bar 6 is supported by the holding portion 138.
• the holding portion 138 has an opening 140 at an upper portion.
• the holding portion 138 is formed with a bead 142 on its inner surface to reinforce strength and graduations 144 on its outer surface which are arranged in a vertical direction.
• a snap lock 146 having an elastic force is formed integrally with an upper end of the holding portion 138.
• the snap lock 146 elastically blocks a portion of the opening 140.
• the holding portion 138 is formed in a U shape and has the opening 140 at the upper portion, this is not restricted thereto.
• the holding portion 138 may be formed in a C shape, which has the opening at any side portion.
• the device for fixing objects to a ceiling includes a clamp 150 that provides a clamping force to the clamping portion 122 so that the clamping portion 122 is securely fixed to the foundation bolt 112 which is fitted in the space 124 of the clamping portion 122.
• the clamp 150 includes a main body 152 which has a circular cross-sectional shape. The main body 152 of the clamp 150 is movably inserted through the first and second operation holes 132 and 134 of the clamping portion 122.
• the main body 152 of the clamp 150 performs a rotational movement between a first position Pl and a second position P2 and performs a linear movement between a third position P3 and a fourth position P4.
• the connecting plate 130 of the clamping portion 122 is forced toward the foundation bolt 112 to be fixed to the foundation bolt 112.
• a gap between the inner surface of the connecting plate 130 of the clamping portion 122 and the main body 152 is smaller than an outer diameter of the foundation bolt 112.
• the main body 152 of the clamp 150 is formed with a semicircular-shaped recess 154 at its outer surface.
• the clamp 150 has a knob 156 for the worker's manipulation, which is formed at an end of the main body 152.
• the knob 156 is in supportedly contact with the outer surface of the first side plate 126 of the clamping portion 122.
• the clamp 150 has a flange 158 which is formed at the other end of the main body 152 extending outward through the second operation hole 134 of the clamping portion 122.
• the movement of the clamp 150 is restricted by the operation of a position restriction mechanism 160.
• the position restriction mechanism 160 includes a first stopper 162 which is formed at the outer surface of the main body 152 of the clamp 150, and a guide recess 168 which is formed at the inner surface of the first operation hole 132 of the clamping portion 122 to guide the movement of the first stopper 162.
• the guide recess 168 is formed with a first stopping end 164 and a second stopping end 166 at both ends to stop the movement of the first stopper 162.
• the first stopping end 164 and the second stopping end 166 are arranged at an angle of 90 degrees therebetween. As shown in Figs.
• the position restriction mechanism 160 further includes a second stopper 170 which is formed at the knob 156 of the clamp 150, and a first position determination hole 172 and a second position determination hole 174 which are formed in a peripheral direction around the first operation hole 132 at the first side plate 126 of the clamping portion 122, into which the second stopper 170 is fitted.
• the first position determination hole 172 and the second position determination hole 174 are arranged at an angle of 90 degrees therebetween.
• the main body 152 of the clamp 150 rotates to the first position Pl to force the foundation bolt 112
• the second stopper 170 is caught by being fitted into the first position determination hole 172.
• Figs. 5 and 7 when the main body 152 of the clamp 150 rotates to the first position Pl to force the foundation bolt 112, the second stopper 170 is caught by being fitted into the first position determination hole 172.
• Figs. 5 and 7 when the main body 152 of the clamp 150 rotates to the first position Pl to force the foundation bolt 112, the second stopper 170
• the second stopper 170 is caught by being fitted into the second position determination hole 174.
• the second stopper 170 is fitted into either the first position determination hole 172 or the second position determination hole 174.
• the second stopper 170 is separated from the first position determination hole 172 or the second position determination hole 174 to allow the rotation of the clamp 150.
• the device for fixing objects to a ceiling further includes a spring 180 which provides an elastic force for biasing the clamp 150 from the fourth position P4 where the knob 156 of the clamp 150 is spaced apart from the first side plate 126 of the clamping portion 122 as shown by a real line in Fig. 8 to the third position P3 where the knob 156 of the clamp 150 is contactingly supported by the first side plate 126 as shown by an alternate long and two short dashes line in Fig. 8.
• the spring 180 is provided at the other end portion of the main body 152 of the clamp 150 which extends outward through the second operation hole 134 of the second side plate 128 of the clamping portion 122.
• the spring 180 is configured as a compression coil spring. One end of the spring 180 is supported by the outer surface of the second side plate 128 and the other end is supported by the flange 158, so that the separation from the main body 152 of the clamp 150 is prevented.
• the flange 158 may be configured as a snap ring or a split pin which is coupled to the other end of the main body 152 to prevent the separation of the spring 180.
• the spring 180 may be configured as a compression coil spring whose both ends are respectively caught by the second side plate 128 and the other end of the main body 152.
• the hanger 120 can be mounted conveniently and promptly to the foundation bolt 112 protrudingly fixed to the structure 2, the mounting process can be achieved with a short working time and a less manpower, thereby increasing workability and reducing constructing costs. Because the hanger 120 is securely mounted to the foundation bolt 112 by the clamping force of the clamp 150, when the both ends of the section steel bar 6 are supported by two hangers 120, safety accidents due to separation of the hanger 120 and the fall of the section steel bar 6 are prevented and thus reliability and safety increase.
• the hanger 120 is securely fixed to the foundation bolt 112 by the clamping operation of the clamp 150 itself, the worker does not need to carry additional tools and can take a safe and optimum posture and actions when working in a high place, thereby preventing the occurrence of safety accidents.
• the second stopper 170 gets out of the first position determination hole 172 to permit the rotation of the clamp 150.
• the first stopper 162 moves along the guide recess 168, starting from the first stopping end 164, to the second stopping end 166 and is stopped by the second stopping end 166.
• the recess 154 of the clamp 150 opposes the connecting plate 130, and the clamping force exerted by the clamp 150 is released. Accordingly, the worker can demount the hanger 120 from the foundation bolt 112 conveniently and promptly.
• Figs. 9 to 13 show a device for fixing objects to a ceiling in accordance with a second embodiment of the present invention.
• the device for fixing objects to a ceiling according to the second embodiment includes a foundation bolt 212, a hanger 220, a position restriction mechanism 260, and a spring 280, similarly to the above first embodiment which includes the foundation bolt 112, the hanger 120, the position restriction mechanism 160, and the spring 180.
• the constitutio n and the operation of the foundation bolt 212, the hanger 220, the position restriction mechanism 260 and the spring 280 of the device for fixing objects to a ceiling according to the second embodiment will be described by referring to the constitution and the operation of the foundation bolt 112, the hanger 120, the position restriction mechanism 160, and the spring 180 of the device for fixing objects to a ceiling according to the first embodiment, and the detailed explanation thereof will be omitted.
• the device for fixing objects to a ceiling includes a clamp 250 that provides a clamping force to a clamping portion 222 so that the clamping portion 222 is securely fixed to the foundation bolt 212 that is fitted in a space 224 of the clamping portion 222.
• the clamp 250 has a main body 252.
• the main body 252 is movably inserted through first and second operation holes 232 and 234 which are respectively formed at first and second side plates 226 and 228 of the clamping portion 222.
• the clamp 250 performs a rotational movement and a linear movement between the first position Pl and the second position P2 through the first and second operation holes 232 and 234.
• the main body 252 of the clamp 250 is formed with an eccentric cam portion 254, so as to force the foundation bolt 212 to the inner surface of the clamping portion 222 when the main body 252 is located at the first position Pl.
• a gap between the inner surface of a connecting plate 230 of the clamping portion 222 and the main body 252 is larger than an outer diameter of the foundation bolt 212, so as to release the clamping force applied to the foundation bolt 212.
• the clamp 250 has a knob 256 for the worker's manipulation that is formed at an end of the main body 252.
• the knob 256 is in supportedly contact with the outer surface of the first side plate 226 of the clamping portion 222.
• the clamp 250 has a flange 258, which is formed at the other end of the main body 252 extending outward through the second operation hole 234 of the second side plate 228, to support the spring 280.
• the eccentric cam portion 254 of the clamp 250 at the first position Pl forces the foundation bolt 212 to the inner surface of the connecting plate 230, and the forced foundation bolt 212 comes into close contact with the connecting plate 230 and is engaged with a female screw 236 of the connecting plate 230, so that the hanger 220 is securely fixed to the foundation bolt 212.
• the device for fixing objects to a ceiling according to the second embodiment has an effect that the hanger 220 can be mounted to the foundation bolt 212 conveniently and promptly.
• Figs. 14 to 17 show a device for fixing objects to a ceiling in accordance with a third embodiment of the present invention.
• the device for fixing objects to a ceiling according to the third embodiment includes a foundation bolt 312, a hanger 320, a clamp 350, and a spring 380.
• the hanger 320 is formed with a C-shaped clamping portion 322.
• the clamping portion 322 has a first side plate 326 and a second side plate 328 which are arranged in parallel with each other at a predetermined gap therebetween, so as to provide a space 324 in which the foundation bolt 312 is fitted.
• An end of the first side plate 326 is connected to an end of the second side plate 328 by a connecting plate 330.
• the first side plate 326 and the second side plate 328 are respectively formed with a rectangular first operation hole 332 and a circular second operation hole 334 at their central portions.
• the first operation hole 332 and the second operation hole 334 are positioned opposite to each other.
• the hanger 320 is formed with a U-shaped holding portion 338 below the clamping portion 322.
• the holding portion 338 has an opening 340 through which the section steel bar 6 passes so that a portion of the section steel bar 6 is supported by the hanger 320.
• the main body 352 of the clamp 350 is inserted through the first and second operation holes 332 and 334 of the hanger 320 such that the main body 352 can move linearly between the first position Pl and the second position P2.
• the main body 352 is formed with a rectangular shaft portion 352a which is non-rotatably fitted through the rectangular first operation hole 332, and a circular shaft portion 352b that extends from the rectangular shaft portion 352a and is fitted through the circular second operation hole 334.
• a gap between the rectangular shaft portion 352a and the inner surface of the connecting plate 330 of the clamping portion 322 is smaller than an outer diameter of the foundation bolt 312, so that the rectangular shaft portion 352a forces the foundation bolt 312 to the inner surface of the clamping portion 322.
• a screw thread 352c is formed at one side surface of the rectangular shaft portion 352a that is engaged with the foundation bolt 312 at the first position Pl.
• the circular shaft portion 352b is formed with a semicircular- shaped recess 354 at its outer surface.
• the main body 352 of the clamp 350 is formed with a knob 356 and a flange 358 at both ends.
• the knob 356 is contactingly supported by the outer surface of the first side plate 326. It is depicted in Figs. 16 and 17 that the knob 356 is formed in a flange shape, however the shape of the knob 356 can be changed adequately for the worker to conveniently grasp the same.
• the device for fixing objects to a ceiling further includes a spring 380 which is provided at the other end portion of the main body 352 of the clamp 350 which extends outward through the second operation hole 334 of the second side plate 328.
• One end of the spring 380 is supported by the second side plate 328 and the other end is supported by the flange 358.
• the spring 380 is configured as a compression coil spring which provides an elastic force for biasing the knob 356 to the first side plate 326.
• the worker fits the foundation bolt 312 fixed to the structure 2 through the space 324 between the connecting plate 330 and the recess 354.
• the compressed spring 380 is restored by its own elastic force, and the clamp 350 returns to the first position Pl from the second position P2.
• a portion of the foundation bolt 312 received in the recess 354 gets out of the recess 354.
• the device for fixing objects to a ceiling according to the third embodiment has features that the hanger 320 can be mounted to the foundation bolt 312 by the linear reciprocating movement of the clamp 350, the position determination mechanism 160 and 260 of the first and second embodiments is not needed in the third embodiment. Accordingly, the constitution of the device for fixing objects to a ceiling according to the third embodiment is relatively simple, and manufacturing costs reduce.
• the device for fixing objects to a ceiling can be mounted to a supporting member like a foundation bolt, which is fixed to a ceiling, with a less manpower. Accordingly, labor costs and construction period reduce. Further, since the mounting process can be easily performed just with a present technical standard, industrial applicability is very high. Especially, the present invention has a considerable ripple effect on buoyantly growing construction industry and interior industry.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Clamps And Clips (AREA)
• Conveying And Assembling Of Building Elements In Situ (AREA)
• Connection Of Plates (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38581325

Family Applications (1)

Country Status (3)

Cited By (2)

Families Citing this family (7)

Citations (4)

Family Cites Families (3)

• 2006
  • 2006-04-07 KR KR1020060031975A patent/KR100811242B1/ko not_active IP Right Cessation
• 2007
  • 2007-01-29 CN CN2007800211068A patent/CN101466904B/zh not_active Expired - Fee Related
  • 2007-01-29 WO PCT/KR2007/000491 patent/WO2007117077A1/en active Application Filing

Patent Citations (4)

Also Published As

Similar Documents

Legal Events