JP3444594B2 - Joist construction method and joist unit used therefor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joist construction method for a dry type double floor constructed by forming a space between it and an existing foundation floor in various buildings such as apartment houses, and a joist unit used for the method. It is a thing.

[0002]

2. Description of the Related Art A method for constructing a dry double floor joist constructed by forming a space between a square or rectangular floor panel and an existing foundation floor using unit supporting legs, and a joist unit used therefor. There is Kaihei 2000-166309.

According to the present invention, as shown in FIG. 13, a joist member b having a predetermined length in which a groove a is formed on one side surface in the longitudinal direction.
And a joist unit d having an elastic pedestal c at its lower end and at least one support leg i whose upper part is attached to the joist member b so as to be vertically adjustable. Even after applying the elastic adhesive e having elasticity to a predetermined thickness along the groove a of the joist member b, the joist unit d is attached along the wall surface f, and then the elastic adhesive e
The floor panel g is constructed by allowing the floor panel g to be finely adjusted after leaving it until it hardens.

Therefore, the joist member b of the joist unit d is the wall f.
Since the elastic adhesive e layer is interposed between them and does not directly contact the floor, and this functions as an insulating layer or a barrier layer that prevents the vibration of the floor from being transmitted to the wall, the floor impact sound is generated. It is possible to effectively prevent it from being transmitted to the wall and to the downstairs and the next room, and it is excellent in floor impact sound insulation performance.

Even after the adhesive fixing with the elastic adhesive e, the height level of the joist unit d can be finely adjusted, and a uniform floor surface can be obtained, and the workability is remarkably improved. is there.

[0006]

However, as shown in FIG. 14, the floor panel g provided between the joist unit d and the unit support leg h is formed by compression molding a chip material, and most of them are formed by compression molding. The reality is that warpage has occurred.

Therefore, when the floor panel g is used for flooring, the height of the joist unit d is first adjusted, and the height of the unit support leg h is adjusted by a horizontal ruler based on the height of the joist unit d. However, since the floor panel g is warped, when the weight is put on the floor panel g and an attempt is made to correct the weight horizontally, the joist unit d is subjected to a force to lift, and thus elastically bonded. The fixing with the agent e causes an error in the height of the joist unit d, which causes a problem that the height of the unit support leg h cannot be accurately adjusted.

Further, since the joist unit d is fixed by the elastic adhesive e with the wall surface f, when the wall surface cannot be sufficiently heightened such as a place without a wall surface or a frame, There is a problem that the joist unit d of the above mechanism cannot be used because there is no means for fixing.

Further, in the standardized joist unit d, since the position of the support leg c which is vertically adjustable is determined, it is necessary to change the position of the support leg i by a pipe passing under the floor. There is a problem that the joist unit d cannot handle it.

Therefore, in the present invention, in order to solve the above-mentioned problems, a joist construction method for fixing the joist unit to the floor, and height adjustment and movement of the support legs, and joist used therefor. It is intended to provide units.

[0011]

According to a first aspect of the present invention, in a method for constructing a dry double floor joist constructed by forming a space between the existing foundation floor surface and the existing foundation floor surface, a wall is formed on the existing foundation floor. Fixing the rails along the rails, and vertically slidably mooring a required number of unit support legs equipped with floor panel support plates whose height can be freely adjusted with respect to the rails, Sliding each unit support leg according to the floor panel width for positioning, adjusting the height of the floor panel support plate, and providing the floor support plate without directly contacting the wall. Is a joist construction method.

According to a second aspect of the present invention, in a joist unit used in a joist construction method for a dry type double floor constructed by forming a space between it and an existing foundation floor surface, the joist unit slides along the upper end surface in the length direction. A rail having a rectangular cross section provided with a moving groove portion and a fixing means for fixing to a foundation floor, a unit support leg to which a pedestal slidable in the rail is attached at a lower end portion thereof, and the unit The floor joist unit is provided with a height-adjustable floor panel support plate on an upper portion of the support leg.

A third aspect of the present invention is characterized in that a sound insulating plate is attached to the rear surface of the rail according to the second aspect.

A fourth aspect of the present invention is characterized in that a notch portion into which the pedestal of the unit supporting leg can be inserted is opened in the middle of the rail length direction of the second or third aspect.

A fifth aspect is characterized in that the pedestal according to the second, third or fourth aspect is formed of an elastic body excellent in sound insulation.

As a means for fixing the rail to the foundation floor surface, there is a method of forming a nail hole in the inner bottom surface of the rail and fixing it with a nail. Further, by providing recesses on both sides of the rail or on the bottom of the rail as locations where the nail holes are provided, it becomes a mechanism that allows the pedestal of the unit support leg to slide smoothly.

In the present invention, the floor panel support plate is constructed so as not to be in direct contact with the wall, so that the impact sound from the floor panel is not propagated to the wall, effectively preventing it from propagating to the downstairs or the adjacent room and blocking the floor impact sound. It has excellent properties.

Further, since the construction method is not directly fixed to the wall, it is possible to perform construction at a place where the wall is low, such as a frame, or where there is no wall, and further because the Yunot support legs are fixed by the rails. It becomes the standard for the floor height when adjusting the level, which enables highly accurate height adjustment.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings showing examples thereof. As shown in FIG. 1, the joist unit 1 includes a rail 2 fixedly installed on the floor surface, and at least one (two in this embodiment) unit support leg 3 that is movable left and right along the rail 2.
Further, it is composed of a floor panel support plate 4 on the unit support leg 3 whose height is adjustable.

Therefore, as shown in FIG. 2, the rail 2 is a long tubular body having a rectangular cross section with a sliding groove 5 being opened at the top. Further, nail holes 6 for fixing are drilled on the bottom surface of the rail 2 at regular intervals, and the rail 2 is fixed to the floor surface A by nailing the rail 2 with the nail holes 6. Then, the pedestal 8 attached to the lower end of the unit support leg 3 is inserted into the rail 2, and the unit support leg 3 is inserted into the sliding groove portion 5 of the rail 2 so that the pedestal 8 is anchored inside the rail 2 Can be slid in the longitudinal direction.

In the case where the rail 2 is fixed by nails, as shown in FIG. 3, a recess 9 is formed along the bottom surface of the rail 2.
By forming the nail hole 6 in the hollow portion 9, the head 10 of the nail 7 does not come into contact with the bottom surface of the pedestal 8 and smooth sliding is possible.

Next, as shown in FIG. 4, there is a mechanism in which fixing plates 11 having nail holes 6 drilled are extended on both sides of the rail 2 and the rail 2 is fixed to the floor surface A by nails 7.

Further, as shown in FIG. 5, a sound insulation plate 12 made of rubber or urethane is attached to the back surface of the rail 2 to prevent the impact sound from propagating to the floor surface A.

Further, as shown in FIG. 6, a mechanism is provided in which a cutout portion 19 into which the pedestal 8 can be inserted is opened on the side wall of the rail 2 at the middle thereof.

As shown in FIG. 7, the basic structure of the unit support leg 3 and the floor panel support plate 4 whose height is adjustable on the unit support leg 3 is as shown in FIG. A pedestal 8 formed of an elastic body such as rubber is rotatably attached to the bulged portion 13 that is expanded in one direction.

Further, a bolt screw 14 is provided around the outer peripheral surface thereof, and a minus groove 15 is provided at the tip thereof. Then, a support nut 17 having a support portion 16 that is laterally expanded at the lower end is provided so as to penetrate through the center of the rectangular panel-shaped floor panel support plate 4. In this case, the panel support plate 4 is supported horizontally by the support portion 16 at the lower end of the support nut 17.

The height of the floor panel support plate 4 can be freely adjusted by screwing the support nut 17 into the bolt screw 14 of the unit support leg 3 and rotating it in the left-right direction, and the floor panel support plate 4 is fixed. By rotating the minus groove 15 with a screwdriver in this state, the floor panel support plate 4
This is a mechanism that can adjust the height of the.

Further, a double-sided adhesive sheet 18 for temporarily fixing the floor panel is provided on the upper surface of the floor panel support plate 4.

A floor panel is constructed by the joist unit 1 having the above-mentioned construction. First, as shown in FIG.
The rails 2 are fixed to the concrete slab-shaped floor surface A with nails or the like at regular intervals along. In this case, the distance between the rail 2 and the wall B is set such that the floor panel support plate 4 does not come into contact with the wall B surface even if the floor panel support plate 4 is rotated to the wall B surface.

Then, the pedestals 8 of the unit support legs 3 having the floor panel support plates 4 mounted on the fixed rails 2 are inserted, and the unit support legs 3 are provided at intervals of each floor panel width (about 60 cm).
Set up sequentially while sliding 3.

Next, as shown in FIG. 9, the floor panel support plate 4
After adjusting the height while rotating the right and left direction, the steel support bolts 21 are attached to the base 20 made of anti-vibration rubber on the floor surface A.
Is rotatably erected, and a floor panel C is attached between the floor panel C and a floor panel support leg 24 to which a support plate 23 is attached via a level adjusting nut 22 screwed onto the upper portion of the support bolt 21. And install it with screws with a gap.

Then, as shown in FIG. 10, after the laying of the floor panel C is completed, a horizontal ruler is applied on the basis of the height of the floor panel support plate 4 of the unit support leg 3 erected on the rail 2. Support plate 23 to which the support leg 24 is attached
Adjust the level of the floor panel C while adjusting the height of the floor panel. In this case, the height of the floor panel support plate 4 can be finely adjusted.

When the height is adjusted while the floor panel support plate 4 and the support plate 23 are fixed to the floor panel C with screws or the like, the bolt screw 14 and the support bolt 21 are used.
The height can be freely adjusted by fitting the tip of a rotating tool such as a screwdriver into the minus groove 15 formed in the tip of the and rotating the tool.

In the joist construction method and joist unit used therefor according to the present invention, as shown in FIG. 11, the unit support legs 3 can be erected at intervals with which the floor panel support plate 4 can be rotated with respect to the wall B surface. Become.

Therefore, the height can be adjusted by rotating the floor panel support plate 4 left and right while the unit support legs 3 are erected, and the workability is greatly improved. Further, since the floor panel support plate 4 is installed in a state in which there is a gap with the wall B surface, it is possible to prevent the floor impact sound from being transmitted to the wall and propagating to the downstairs and the adjacent room.

Further, by mounting a sound insulating plate 12 such as rubber or urethane on the rear surface of the rail 2, the propagation of impact sound to the floor surface A is prevented and at the same time, the pedestal under the unit supporting leg 3 which slides in the rail 2 is mounted. When 8 is made of anti-vibration rubber, it is possible to minimize the propagation of vibration and impact sound to the floor surface A.

Further, when a step is provided in the middle of the floor as shown in FIG. 12, by installing the joist unit of the present invention, the unit support legs 3 can be fixed to the floor surface A, so that the floor panel C warps. An error in height adjustment of the panel support plate 4 can be eliminated.

Since the unit support legs 3 are slidable left and right on the rails 2, the unit support legs 3 can be easily moved even when the pipes arranged on the floor A are required to move. Is something that can be done. In the present embodiment, the rail 2 is combined with two unit support legs 3, but the rail 2 may be shortened to combine one rail 3 with one unit support leg 3. Various forms are conceivable depending on the conceivable situation.

[0039]

As described above, according to the present invention, the floor panel support plate of the joist unit is not in direct contact with the wall,
This is to prevent floor vibrations from being transmitted to the walls,
It is possible to effectively prevent the floor impact sound from being transmitted to the wall and propagating to the downstairs or the adjacent room, and the floor impact sound insulation performance is excellent.

Further, since the unit support legs can be slid to the left and right with respect to the floor surface by rails and can be fixed, the unit support legs can be lifted due to the warp of the floor panel when the level is adjusted in the floor panel attaching work. Without this, highly accurate level adjustment is possible.

Further, by fixing the unit support legs on the floor surface, it is possible to perform the construction even in a place where the wall is low or where there is no wall, such as a frame, as compared with the conventional construction method in which the joist member is fixed to the wall surface. Further, the unit supporting leg can be slid so that the unit supporting leg can be sufficiently moved even when the floor panel is constructed or pipes are required to move.

[Brief description of drawings]

FIG. 1 is an overall explanatory view showing an embodiment of a joist unit of the present invention.

FIG. 2 is a cross-sectional explanatory view of a rail of a joist unit of the present invention.

FIG. 3 is an explanatory view showing an embodiment of a rail fixing mechanism of the joist unit of the present invention.

FIG. 4 is an explanatory view showing another example of the rail fixing mechanism of the joist unit of the present invention.

FIG. 5 is an explanatory diagram in which a sound insulating plate is attached to the bottom surface of the rail of the joist unit of the present invention.

FIG. 6 is an explanatory view showing a state where a cutout portion is provided in the middle of the rail of the joist unit of the present invention.

FIG. 7 is an explanatory view showing a unit support leg and a floor panel support plate of the joist unit of the present invention.

FIG. 8 is a construction explanatory view of a joist unit of the present invention.

FIG. 9 is a construction explanatory view of a floor panel by the joist unit of the present invention.

FIG. 10 is an explanatory view showing a level adjusting step after construction of a floor panel by the joist unit of the present invention.

FIG. 11 is an explanatory view of the operation of the joist unit of the present invention.

FIG. 12 is an explanatory view showing another usage example of the joist unit of the present invention.

FIG. 13 is an explanatory diagram of a conventional joist unit.

FIG. 14 is a construction explanatory view of a conventional floor panel.

[Explanation of symbols]

1 jota unit 2 rails 3 unit support legs 4 floor panel support plate 5 Grooves for sliding 6 nail holes 8 pedestals 9 depressions 11 Fixed plate 12 sound insulation board 14 bolt screws 15 slot 16 Support plate 17 Support nut

Claims (5)

(57) [Claims] 1. A method for constructing a dry double floor joist constructed by forming a space between an existing foundation floor and a step of fixing a rail along a wall on the existing foundation floor, and said rail. A step of vertically mooring a required number of unit support legs equipped with a floor panel support plate whose height can be freely adjusted by a pedestal that is slidably inserted into the floor panel; A method of joisting a joist, comprising the steps of sliding and positioning according to the width, adjusting the height of the floor panel support plate, and providing the floor support plate without directly contacting the wall. 2. A joist unit used in a method for constructing a joist for a dry double floor constructed by forming a space between it and an existing foundation floor surface, wherein a sliding groove is provided along an upper end surface in the length direction. A rail having a rectangular cross section, which is opened and provided with a fixing means for fixing to the foundation floor, a unit support leg to which a pedestal slidable in the rail is attached at its lower end, and a unit support leg of the unit support leg. A joist unit having a floor panel support plate whose height is adjustable. 3. The joist unit according to claim 2, wherein a sound insulating plate is attached to the back surface of the rail. 4. The joist unit according to claim 2 or 3, wherein a notch portion into which a pedestal of the unit support leg can be inserted is opened in the middle of the rail length direction. 5. The joist unit according to claim 2, 3, or 4, wherein the pedestal is formed of an elastic body having excellent sound insulation.