JPS6210336Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a ceiling structure for a building made of reinforced concrete.

Conventionally, this type of ceiling has a large number of main reinforcing bars and a large number of slightly thinner sub-reinforcing bars that intersect with the main reinforcing bars, and both are tied together with wire rods, etc., or both are joined by welding, and they are buried in concrete. As a result, there are disadvantages such as a lot of effort required for binding or welding the main reinforcing bars and sub reinforcing bars, and poor work efficiency. Furthermore, when hanging various types of equipment from the ceiling, anchor bolts were driven into the ceiling or hanging fixtures were buried in the ceiling in advance, so the construction costs and labor involved were ignored. Furthermore, there was the problem that various instruments could not be easily moved after construction.

This invention was proposed in view of the above, and it shortens the construction period for ceiling formation and saves construction work.
In addition, various instruments can be easily hung, and their hanging positions can be freely adjusted.
It is an object of the present invention to provide the ceiling structure, which can be quickly and firmly fixed in position after adjustment.

In order to achieve the above object, the present invention has a number of engaging grooves for hanging equipment that open downward and have a groove shape with a cross section, and a number of anchor grooves for concrete that open upward and have a groove shape with a cross section. a ceiling board in which are alternately arranged in parallel; a large number of sub-reinforcements connected to the back surface of the ceiling board by intersecting with the engagement groove and the anchor groove; and driven on the back surface of the ceiling board and the sub-reinforcement. an enlarged head of a suspension member that suspends an instrument at its lower end is accommodated and held in at least a portion of the engagement groove;
A pair of engaging slopes are provided on opposing inner surfaces of the engaging groove and are slidably in surface contact with each other in the longitudinal direction of the groove, and a bottom surface of the engaging groove is provided with a vertical clearance. It is characterized by facing.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a ceiling plate made of a steel plate fixed on a beam 2 made of reinforced concrete to cover the ceiling part of a building made of reinforced concrete; By alternately arranging a large number of engagement grooves 3 for hanging equipment that open downward and have a groove shape with a cross section, and a large number of concrete anchor grooves 4 that open upward and have a groove shape with a cross section. configured.
On the back side of the ceiling board 1, there is a sub-reinforcement 5 made of a large number of steel bars.
is welded to the outer surface of the bottom wall of the engagement groove 3 so as to intersect with the engagement groove 3 and the anchor groove 4. Concrete 7 with reinforcing bars 6 embedded is placed on the back surface of the ceiling board 1 and on the sub-reinforcements 5, and the ceiling board 1, the sub-reinforcements 5,
A ceiling 8 is made up of reinforcing bars 6 and concrete 7. Since the concrete 7 is filled into the dovetail anchor groove 4 of the ceiling plate 1, the concrete 7
A large bonding strength can be obtained between the ceiling plate 1 and the ceiling plate 1.

A suspension member H is used to suspend the appliances 9 ₁ and 9 ₂ from the ceiling plate 1 . The suspension member H is composed of a suspension bolt 10, a long nut 11 whose upper end is screwed to the lower end of the suspension bolt 10, and a suspension rod 12 whose upper end is screwed to the lower end of the long nut 11. Instruments 9 ₁ and 9 ₂ are attached to the lower end of the rod 12 . The suspension bolt 10 has an enlarged head 13 that is housed and held in the engagement groove 3 and has an inverted trapezoidal shape when viewed from the side. A pair of engaging slopes 13a are formed on both opposing inner surfaces 3a of the groove 3, respectively, and are slidably in surface contact with each other in the longitudinal direction of the groove 3.
The upper surface of both inner surfaces 3 of the engagement slope 13a
It faces the bottom surface 3b of the engagement groove 3 with a vertical clearance S for allowing upward separation from the engagement groove 3a. Further, the enlarged head 13 is inserted into the groove 3 with both sides of the inverted trapezoidal shape along both side edges of the engagement groove 3, as shown in FIG. 3a, and then as shown in FIG. 3b. Rotate the ampullae head 13 by 90 degrees,
It is dovetail-grooved into the engagement groove 3. In the fitted state, the weights of the instruments 9 ₁ and 9 ₂ are used to wedge the engagement slopes 13 a of the enlarged head 13 against the inner surfaces 3 a of the dovetail engagement groove 3 . It can be tightly bitten, and therefore, the hanging member H can be firmly fixed to the ceiling plate 1 by the biting force without being rotated. Also equipment 9
₁ and 9 ₂ to make the engaging slopes 13a of the enlarged head 13 slightly higher than the inner surfaces 3a of the engaging groove 3, the wedge effect can be immediately eliminated. In that state, the appliance 9 ₁ , 9
₂ can be freely moved along the engagement groove 3 to a desired position. Moreover, after the movement, the equipment 9
Since fixing of the hanging member H is immediately completed by simply releasing ₁ and 9 ₂ , the handling operation is extremely easy.

As described above, the ceiling of the reinforced concrete building according to the present invention has a large number of engaging grooves 3 for hanging equipment that open downward and have a groove shape with a cross section, and a large number of engagement grooves 3 that open upward and have a groove shape with a cross section. A ceiling board 1 in which concrete anchor grooves 4 of Concrete 7 placed on the back surface and sub-reinforcement 5;
Since the structure is made up of It is possible to facilitate the welding work for 1 and improve its work efficiency, and also to eliminate the need for finishing work on the ceiling surface, thereby shortening the construction period for ceiling formation and reducing construction costs. can. Further, since each anchor groove 4 is filled with concrete 7, a large bond strength can be obtained between the ceiling plate 1 and the concrete 7.

Further, an enlarged head 13 of a suspension member H having instruments 9 ₁ , 9 ₂ suspended at its lower end is accommodated and held in at least a part of the engagement groove 3 , and this enlarged head 13 is
A groove 3 is provided on both opposing inner side surfaces 3a of the engagement groove 3.
The instrument 9 ₁ is provided with a pair of engagement slopes 13 a that are slidably in surface contact with each other in the longitudinal direction of the instrument 9 , and faces the bottom surface 3 b of the engagement groove 3 with a clearance S in the vertical direction. _. Due to the biting force, the hanging member H can be firmly fixed to the ceiling board 1 without rotating, and there is no fear that the hanging member H will fall off. Since there is no need to use special tools, the structure is simple and can contribute to cost reduction and improved assembly. In addition, by simply lifting the instruments 9 ₁ , 9 ₂ and slightly lifting both the engagement slopes 13 a of the enlarged head 13 above the inner surfaces 3 a of the engagement groove 3 , the wedge effect can be immediately eliminated. Since it is possible, use the equipment 9 in that condition.
₁ and 9 ₂ can be freely moved along the engagement groove 3 to a desired position, and after the movement, fixing of the hanging member H is immediately completed by simply releasing the instruments 9 ₁ and 9 ₂ . Therefore, handling and operation are extremely easy.

[Brief explanation of the drawing]

Fig. 1 is a partially cut away perspective view showing an embodiment of the present invention, and Fig. 2 shows a suspension bolt, a long nut,
FIG. 3 is a perspective view showing the hanging rod, FIGS. 3A and 3B are explanatory diagrams of the hanging operation, and FIG. 4 is a perspective view of the fixture suspended from the ceiling. 1... Ceiling board, 3... Engagement groove, 3a... Inner surface, 3b... Bottom surface, 4... Anchor groove, 5... Sub-reinforcement, 7... Concrete, 13... Enormous head, 1
3a... Engagement slope, S... Play gap.

Claims (1)

[Scope of utility model registration request] A large number of engagement grooves 3 for hanging equipment that open downward and have a groove shape with a cross section, and a large number of anchor grooves 4 for concrete that open upward and have a groove shape with a cross section.
a ceiling board 1 which is arranged in alternating rows; a large number of sub-reinforcements 5 connected to the back surface of the ceiling board 1 by intersecting with the engagement grooves 3 and the anchor grooves 4; the back surface of the ceiling board 1 and the Concrete 7 placed on sub-reinforcement 5
In at least a portion of the engagement groove 3, an enlarged head 13 of a suspension member H having instruments 9 ₁ , 9 ₂ suspended at its lower end is housed and held, and this enlarged head 13 is , both opposing inner side surfaces 3a of the engagement groove 3
is provided with a pair of engagement slopes 13a that are slidably in surface contact with each other in the longitudinal direction of the groove 3, and are opposed to the bottom surface 3b of the engagement groove 3 with a clearance S in the vertical direction. Ceiling structure of a building made of reinforced concrete.