JP2003247330A - Support leg for double floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support leg for a double floor capable of preventing a floor panel from subsiding excessively and preventing a vibrationproof member from deforming even when an excessive load acts on the floor panel. <P>SOLUTION: An elastically deformable vibrationproof member 6 is interposed between a floor support member 4 supporting a floor panel 3 arranged apart above a floor backing member 2 and a leg 5 erected on the floor backing member 2. When the vibrationproof member 6 is subjected to a compressive deformation larger than a specified value by an overload, a rigid overload support part 7 supporting the floor support member 4 or the floor panel 3 is installed on the leg 5. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a support leg for a double floor.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 2001-207628 (FIG. 8) is known as a support leg 1 having a double floor. This double-floor support leg 1 is an elastically-deformable anti-vibration system between a floor receiving member 4 for receiving a floor panel 3 spaced above a floor base 2 and a leg 5 standing on a floor slab. The floor panel 3 is configured by interposing the material 6, that is, the floor panel 3 is provided with a soundproof effect by elastically contacting the floor support material 4 with the vibration damping material 6.

[0003]

However, the double-floor support leg 1 having the above structure has a structure in which the vibration isolator 6 supports the load applied to the floor panel 3 and the floor support member 4. Therefore, when the floor panel 3 is overloaded, the amount of compressive deformation of the vibration isolator 6 increases and the floor panel 3
There was a problem that the subsidence of the car would become excessively large. Furthermore, if the vibration damping material 6 is overloaded to cause the vibration damping material 6 to undergo large compressive deformation, there is a problem that the vibration damping material 6 will be settled.

The present invention has been made in view of the above points, and prevents the floor panel from excessively sinking even when an overload is applied to the floor panel, and also prevents the vibration damping material from being settled. It is an object to provide support legs for a double floor.

[0005]

In order to solve the above-mentioned problems, a double-floor support leg according to the present invention comprises a floor support member 4 for receiving a floor panel 3 arranged above a floor base 2 and a space below the floor base 2. When the vibration isolator 6 is compressed and deformed by a predetermined amount or more due to an overload in the support leg 1 of the double floor in which an elastically deformable vibration isolator 6 is interposed between the leg 5 erected on the ground 2 A rigid overload receiving portion 7 for receiving the floor receiving member 4 or the floor panel 3 is provided on the upper portion of the leg portion 5. According to this, when an overload that causes the vibration isolator 6 to compressively deform more than a predetermined amount is applied to the floor panel 3 and the floor bearing member 4, the rigid overload bearing portion provided on the upper portion of the leg portion 5 The floor panel 3 or floor support 4 can be supported by 7. Therefore, the vibration damping material 6 is prevented from being compressed or deformed more than a predetermined amount, the floor panel 3 is prevented from being excessively depressed, and the vibration damping material 6 is prevented from being settled.

Further, a substantially U-shaped frame body 8 having a pair of vertical pieces 9 and a lower piece 10 and having an upper opening is provided on the upper portion of the leg portion 5, and the longitudinal end portion of the frame body 8 is provided. Of the vibration-proof material 6 and the floor receiving material 4 in the frame 8 by inserting from the side opening 17 of
An upper opening formed by projecting flange pieces 11 having upper surfaces as overload receiving portions 7 inwardly from the upper end portions of a pair of vertical pieces 9 of the frame body 8 and forming a pair between the flange pieces 11, 11. 1
It is also preferable that the upper surface of the floor receiving member 4 is projected above the frame 8 from 6. According to this, the vibration damping material 6 and the floor receiving material 4 can be housed in the frame body 8 by inserting from the side opening 17 of the frame body 8,
The support leg 1 can be easily assembled, and the upper surface of the flange piece 11 constituting the frame 8 is overloaded with the overload receiving portion 7.
Therefore, it is not necessary to separately provide the overload receiving portion 7, and the structure of the support leg 1 can be simplified.

Further, an upper projection 12 is provided on the upper surface of the floor receiving member 4 so as to project above the frame 8 through the upper opening 16, and a portion of the upper surface of the floor receiving member 4 other than the upper protruding portion 12 is buffered. It is also preferable that the cushioning material mounting portion 13 is provided, the upper surface of the cushioning material mounting portion 13 is arranged to face the lower surface of the flange piece 11, and the cushioning material mounting portion 13 is provided with a cushioning material 14.
According to this, the cushioning material mounting part 13 of the floor receiving material 4 which opposes
Of the cushioning material mounting portion 13 of the floor receiving material 4 and the bottom surface of the flange piece 11 caused by the vibration-proof material 6 elastically restored by the cushioning material 14 interposed between the upper surface of the flange piece 11 and the lower surface of the flange piece 11. The impact of a collision can be softened. Therefore, it is possible to prevent breakage of the support leg 1 and generation of a collision sound caused by the collision.

It is also preferable to provide a plurality of receiving projections 15 having different heights on the upper surface of the vibration isolator 6 for receiving the floor receiving material 4. According to this, the vibration-proof material 6 receives the floor receiving material 4 according to the magnitude of the load applied to the floor panel 3, and the receiving projection 1
The floor support material 4 can be received by changing the number of five, that is, by changing the contact area. Therefore, when the load applied to the floor panel 3 is small, the vibration isolator 6 softens the floor support material 4. It is possible to improve the absorption effect of the lightweight impact sound by supporting it with elastic force, and when the load applied to the floor panel 3 is large, the vibration isolator 6 gradually increases the floor support material 4 with a strong elastic force. The floor panel 3 can be supported to suppress the sinking of the floor panel 3.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on the embodiments shown in the accompanying drawings.

1 to 5 show an example of an embodiment of the present invention. The double floor has a floor structure in which a floor panel 3 which is a floor material is arranged above a floor base 2 such as a floor slab so as to be spaced from each other. This double-floor support leg (hereinafter, support leg 1) supports the floor panel 3 at a position above the floor base 2, and the floor panel 3 is placed on the fixing leg (Fig. Floor support material 4 fixed with (not shown), and the above-mentioned floor support material 4
The main body is composed of a vibration-damping material 6 which is an elastic body on which is mounted, and a metal leg 5 which is erected on the floor base 2 and supports the vibration-damping material 6 at its upper end.

A frame 8 for accommodating the floor receiving member 4 and the vibration isolator 6 is provided at the upper end portion of the leg portion 5. The frame body 8 is a metal frame body having excellent rigidity, and is formed by connecting the lower ends of a pair of vertical pieces 9 standing on the left and right with a horizontal lower piece 10 and opening upward. Vertical section U
It is a character-shaped frame. In this frame 8, flange pieces 11 are horizontally and inwardly projected at the upper ends of a pair of vertical pieces 9, respectively, and an upper opening 16 is formed between the pair of flange pieces 11, 11. ing. Each upper surface of the pair of flange pieces 11 constitutes an overload receiving portion 7 described later.
Here, for convenience, the direction in which the pair of vertical pieces 9 is arranged side by side is referred to as the left-right direction, and the direction that is horizontal and orthogonal to this left-right direction is referred to as the front-back direction. A side opening 17 is formed at each of the front and rear ends.

The leg portion 5 is a tubular lower leg member 1 having a pedestal portion 18a at its lower end for stable placement on the floor base 2.
8 and a solid shaft-shaped upper leg member 1 having the frame body 8 at the upper end
The upper and lower leg members 19 and 18 are provided with a telescopic mechanism that allows the vertical length of the leg portion 5 to freely extend and contract. This expansion / contraction mechanism includes a female screw portion (not shown) formed on the inner surface of the lower leg member 18 and a male screw portion 20 formed on the peripheral surface of the upper leg member 19.
And a nut 21 (see FIG. 7) screwed into the male screw portion 20. That is, by screwing the male screw portion 20 into the female screw portion and rotating the upper leg member 19 with respect to the lower leg member 18, the upper leg member 19 is vertically movable with respect to the lower leg member 18. Then, the nut 21 screwed into the male screw portion 20 of the upper leg member 19 is tightened toward the lower leg member 18, whereby the upper leg member 19 is positioned and fixed to the lower leg member 18. . The length of the leg 5 in the height direction can be adjusted steplessly.

Inside the frame body 8, the floor receiving material 4 is laminated on the vibration isolating material 6 and is slidably inserted from the side opening 17 of the frame body 8 to be housed. Here, the vibration isolator 6 is an elastically deformable rubber material formed in a rectangular shape in vertical cross section, and the floor receiving material 4 has a convex cross section in vertical section by providing an upper projection 12 at the center of the upper surface thereof. It is a wood material formed in. A portion of the upper surface of the floor receiving member 4 other than the upper protrusion 12 is formed as a flat cushioning material mounting portion 13. The cushioning material mounting portion 13 has an upper surface made of an elastic material such as rubber. Cushioning material 1
4 is attached. More specifically, since the upper protrusion 12 is provided at the center of the upper surface of the floor receiving material 4, the cushioning material mounting portion 1 is provided.
The pair of floor support members 3 are provided at the left and right ends of the upper surface of the floor support member 4. When the vibration isolator 6 and the floor receiving member 4 are housed inside the frame body 8, the vibration isolator 6 is placed on the upper surface of the lower piece 10 of the frame body 8 and the vibration isolator 6 is installed. The floor receiving member 4 is placed on the upper surface of the member 6, and the upper protrusion 1 of the floor receiving member 4 is placed.
2 is projected upward from the upper opening 16 of the frame body 8, and the upper surface of the cushioning material mounting portion 13 of the floor receiving material 4 is arranged so as to face the lower surface of each flange piece 11 of the frame body 8. .

When the floor panel 3 is supported by the support leg 1 having the above-mentioned structure, as shown in FIG.
The floor panel 3 is placed and fixed on the upper surface of the upper protrusion 12 of the vehicle, and the load applied downward to the floor panel 3 and the floor support member 4 is supported by the vibration isolator 6, that is, the floor panel 3 is supported by the vibration isolator 6. 3 is vibration-proofed and supported. The vibration isolator 6 is compressed and deformed in proportion to the magnitude of the load applied to the floor panel 3. When the vibration isolator 6 is compressed and deformed, the floor support 4 And the floor panel 3 is depressed so that its upper and lower positions are located downward.

At this time, since the load applied to the floor panel 3 is small, the distance between the upper surface of the upper protruding portion 12 of the floor receiving member 4 and the upper surface of the flange piece 11 of the frame 8 is larger than that of the vibration insulating material 6. When the amount of compressive deformation is small, the depressed floor panel 3 is positioned above the upper surface of the flange piece 11, and the load applied to the floor panel 3 is supported only by the vibration isolator 6. On the other hand, the load applied to the floor panel 3 is large, and the amount of compressive deformation of the vibration isolator 6 is larger than the distance between the upper surface of the upper projection 12 of the floor receiving member 4 and the upper surface of the flange piece 11 of the frame body 8. If it is large, the submerged floor panel 3 has flange pieces 11
The upper surface of the flange piece 11 bears the load applied to the floor panel 3 (FIG. 4).
As described above, in the support leg 1 of this example, the floor panel 3 is normally supported by the vibration isolator 6, but a load of a predetermined amount or more, that is, the upper surface of the upper protrusion 12 of the floor support 4 and the frame body 8 are supported. When the floor panel 3 is subjected to a load (overload) larger than the distance between the upper surface of the flange piece 11 and the vibration damping material 6, the floor panel 3 is covered by the upper surface of the flange piece 11 of the frame body 8. Are supported. Thus, the upper surface of the flange piece 11 of the frame body 8 constitutes the overload receiving portion 7 that receives the floor panel 3 when the vibration isolator 6 is compressed and deformed by a predetermined amount or more due to the overload applied to the floor panel 3. Of.

As described above, when the floor panel 3 is subjected to an overload that causes the vibration isolator 6 to be compressed and deformed by a predetermined amount or more, the vibration isolator 6 is lowered by a predetermined amount of compressive deformation. If the floor panel 3 is received by the overload receiving portion 7, there is an advantage that the floor panel 3 is prevented from being excessively depressed. At this time, since the floor panel 3 is elastically contacted by the vibration isolator 6 via the floor support member 4, the vibration and soundproof effect of the floor panel 3 by the vibration isolator 6 can be continuously maintained. There is also an advantage. Further, as described above, when the floor panel 3 is overloaded, the floor panel 3 is supported by the overload receiving portion 7, so that the vibration isolator 6 is not compressed and deformed by a predetermined amount or more. That is, there is an advantage that excessive compression deformation is not performed, and the vibration damping material 6 is prevented from settling.

When the vibration-proof material 6 that has been compressed and deformed elastically returns, the floor panel 3 and the floor support material 4 are lifted upward. For example, like the support leg 1 shown in FIG. 5, the support leg 1 in which the cushioning material 14 is not installed between the lower surface of the flange piece 11 of the frame body 8 and the cushioning material mounting portion 13 of the floor receiving material 4 which face each other. In this case, when the vibration-damping material 6 that is compressed and deformed elastically returns, the lower surface of the flange piece 11 and the cushioning material mounting portion 13 of the floor receiving material 4 collide with each other with an impact, and The collision may cause breakage of the support leg 1 or generation of collision noise. However, in the support leg 1 of this example, as described above, the cushioning material 14 is interposed between the lower surface of the flange piece 11 of the frame body 8 and the cushioning material mounting portion 13 of the floor receiving material 4 facing each other. Therefore, the shock-absorbing material 14 softens the collision between the lower surface of the flange piece 11 of the frame 8 and the shock-absorbing material mounting portion 13 of the floor receiving material 4, and the damage of the support leg 1 caused by the collision or There is an advantage that the generation of collision noise is prevented.

FIG. 6 shows another example of the embodiment of the present invention. This example is an example in which the shape of the upper protrusion 12 of the floor receiving member 4 in the example of the previous embodiment is changed. That is, in the upper protrusion 12 of this example, the flange protrusion 2 that extends horizontally in the upper end portion of the upper protrusion 12 is arranged so as to increase the area of the upper surface portion on which the floor panel 3 is placed and fixed.
2 is formed. By providing the flange protrusions 22 on the upper protrusions 12 in this way, the mounting area of the floor panel 3 can be made wider, and the stability of the mounting and fixing of the floor panel 3 on the support legs 1 can be improved. It is being done.
In addition, in the support leg 1 of the present example in which the flange projection 22 is provided on the upper projection 12 of the floor receiving member 4, the flange projection is formed on the overload receiving portion 7 formed by the upper surface of the flange piece 11 of the frame body 8. The lower surfaces of 22 are opposed to each other. This allows
When the floor panel 3 is overloaded more than a predetermined amount, the overload receiving portion 7 can support the lower surface of the flange protrusion 22 of the floor receiving member 4, and the floor panel 3 can be prevented from sinking more than a certain amount. At the same time, excessive compression deformation of the vibration isolator 6 is prevented to prevent the vibration isolator 6 from settling.

FIG. 7 shows another example of the embodiment of the present invention. In this example, a plurality of receiving protrusions 15 having different heights are provided on the upper surface of the vibration isolator 6 that receives the floor receiving member 4. That is, in the vibration-proof material 6 provided with the plurality of receiving projections 15 having different heights, the number of the receiving projections 15 that receive the floor receiving material 4 varies depending on the magnitude of the load applied to the floor panel 3. The floor support 4 can be received by changing the contact area. According to this, when the load applied to the floor panel 3 is small, the vibration-proof material 6 supports the floor receiving material 4 with a soft elastic force,
Therefore, it is possible to improve the light impact sound absorbing effect. When the load applied to the floor panel 3 is large,
Since the vibration isolator 6 gradually supports the floor receiving member 4 with a strong elastic force, it is possible to suppress the sinking of the floor panel 3.

[0020]

As described above, in the invention according to claim 1 of the present invention, the floor receiving material for receiving the floor panel spaced apart above the floor base and the leg portion standing on the floor base. In a double-floor support leg in which an elastically deformable vibration isolator is interposed, a rigid overload receiver that receives a floor support material or floor panel when the vibration insulation material is compressed and deformed by a certain amount or more due to overload. Since the part is provided on the upper part of the leg part, when the floor panel and the floor support material are overloaded to cause the vibration isolator to compressively deform more than a predetermined amount, the rigid body installed on the upper part of the leg part The overload receiving part can support the floor panel or the floor receiving material, the vibration damping material is prevented from being deformed more than a predetermined amount, and the floor panel is prevented from being excessively depressed. It is possible to prevent the vibration damping material from being sagged.

In addition to the effect of claim 1, the invention according to claim 2 provides a substantially U-shaped frame body which is composed of a pair of vertical pieces and a lower piece and which is open at the top. A flange piece is provided on the upper part of the leg, which is inserted from the side opening at the end of the frame in the longitudinal direction to accommodate the vibration-proof material and the floor receiving material in the frame, and the flange piece having the upper surface as the overload receiving portion. Each of the pair of vertical pieces is inwardly projected from the upper end portion, and the upper surface of the floor receiving member is projected upward from the frame through the upper opening formed between the pair of flange pieces. Can be inserted from the opening to store the vibration damping material and floor receiving material in the frame, and the support legs can be easily assembled.
Further, since the upper surface of the flange piece that constitutes such a frame body is the overload receiving portion, it is not necessary to separately provide the overload receiving portion, and the structure of the support leg can be simplified.

According to the invention of claim 3, in addition to the effect of claim 2, the upper surface of the floor receiving material is provided with an upper projecting portion which projects upward from the frame through the upper opening, and the floor receiving material is provided. Since a portion other than the upper protrusion of the upper surface of the material is used as the cushioning material mounting portion, the upper surface of this cushioning material mounting portion is arranged to face the lower surface of the flange piece, and the cushioning material is provided on the upper surface of the cushioning material mounting portion. , The upper surface of the cushioning material mounting portion of the floor receiving material caused by the elastically restored vibration damping material by the cushioning material interposed between the upper surface of the cushioning material mounting portion of the opposing floor receiving material and the lower surface of the flange piece The impact of the collision with the lower surface of the flange piece can be softened, and therefore, it is possible to prevent the damage of the support leg and the generation of the collision noise caused by the collision.

According to the invention of claim 4, in addition to the effect of claim 1, a plurality of receiving projections having different heights are provided on the upper surface of the vibration isolator for receiving the floor receiving material. Anti-vibration material
Depending on the size of the load applied to the floor panel, the number of receiving projections that receive the floor receiving material can be changed to change the contact area to receive the floor receiving material. The material can support the floor support material with a soft elastic force to improve the absorption effect of lightweight impact sound, and when the load applied to the floor panel is large, the vibration isolator gradually increases the floor support material. It is possible to suppress the sinking of the floor panel by supporting the with a strong elastic force.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a support leg showing an example of an embodiment of the present invention.

FIG. 2 is a partially enlarged front view of the same support leg.

FIG. 3 is a front view showing a state in which the support legs of the same support the floor panel.

FIG. 4 is a front view of the support leg in a state where an overload is applied to the floor panel of the above.

FIG. 5 is a partially enlarged front view of the same support leg.

FIG. 6 is a partial front view of a supporting leg in an example of another embodiment of the present invention.

FIG. 7 is a front view of a support leg in an example of still another embodiment of the present invention.

FIG. 8 is a front view showing a conventional technique.

[Explanation of symbols]

1 Support leg 2 floor base 3 floor panels 4 floor support 5 legs 6 Anti-vibration material 7 Overload receiving part 8 frame 11 Flange piece 12 Upper protrusion 13 Buffer material mount 14 cushioning material 15 Receiving protrusion

Claims (4)

[Claims] 1. A double structure in which an elastically deformable vibration damping material is interposed between a floor receiving material for receiving a floor panel spaced above a floor base and a leg portion standing on the floor base. In the floor support legs, a rigid overload receiving portion for receiving the floor receiving material or floor panel when the vibration damping material is compressed and deformed by a predetermined amount or more due to an overload is provided on the upper portion of the leg portion of the double floor. Support legs. 2. A substantially U-shaped frame body, which is composed of a pair of vertical pieces and a lower piece and is open at the upper side, is provided on the upper part of the leg portion, and the frame body is provided with a side opening at a longitudinal end thereof. By inserting the vibration damping material and the floor receiving material into the frame body, the flange pieces having the upper surface as the overload receiving portion project inwardly from the upper end portions of the pair of vertical pieces of the frame body. The double-floor support leg according to claim 1, wherein an upper surface of the floor receiving member is projected upward from the frame through an upper opening formed between the pair of flange pieces. 3. An upper projection is provided on the upper surface of the floor receiving material so as to project upward from the frame through an upper opening, and a portion other than the upper protruding portion of the upper surface of the floor receiving material is used as a cushioning material mounting portion. The double-floor support leg according to claim 2, wherein an upper surface of the cushioning material mounting portion is arranged to face a lower surface of the flange piece, and a cushioning material is provided on an upper surface of the cushioning material mounting portion. 4. The double-floor support leg according to claim 1, wherein a plurality of receiving projections having different heights are provided on the upper surface of the vibration isolator for receiving the floor receiving material.