JPH0624512Y2 - Floor board support device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a floor plate support device for supporting a floor plate of a building such as a gymnasium or a house so that its level can be adjusted.

[Conventional technology]

As a floor board supporting device of this type, conventionally, for example, one shown in FIG. 11 is known (Jitsuko Sho 56-316).
No. 37 publication). This includes a floor plate supporting portion 2 for supporting the floor plate 1, a supporting bolt 3 for screwing and supporting the floor plate supporting portion 2 to an upper screw portion 3a, and a support bolt 3 placed on the underfloor foundation surface 4 and below the supporting bolt 3 above. And a support base 5 that supports the side. The threaded portion 3 is provided on the lower shaft of the support bolt 3.
On the other hand, a male screw portion 3b having a reverse thread to that of a is formed, while a female screw portion 5a with which the male screw portion 3b is screwed is formed on the support base 5, and by screwing the male screw portion 3b and the female screw portion 5a. The support bolt 3 is supported by the support base 5.

When arranging the floor board 1 using this support device, for example, the floor board supporting portion 2 is fixed to the floor board 1, while the support bolt 3 is screwed into the support base 5, and the support bolt 3 with the support base 5 is attached. It is screwed into the floor plate supporting portion 2 fixed to the floor plate 1. Then, the floor board 1 is arranged on the underfloor foundation surface 4 together with the supporting device.

In this state, when a driver is inserted into the groove 3c at the upper end of the support bolt 3 and the support bolt 3 is rotated, the support bolt 3 moves up and down with respect to the support base 5, and the floor plate support portion 2 moves up and down with respect to the support bolt 3. The level of the floor board 1 is adjusted.

Further, as a conventional floor board supporting device, one shown in FIG. 12 is also known (published in Japanese Utility Model Laid-Open No. 59-28139). This includes a floor plate support portion 7 that supports the floor plate 6, a support bolt 8 that supports the floor plate support portion 7 by screwing, and a support base 10 that is mounted on the underfloor foundation surface 9 and supports the support bolt 8. I have it. The lower end shaft portion 8a of the support bolt 8 has a larger diameter than the general shaft 8b. The support base 10 is
An accommodating portion 11 that rotatably supports the lower end shaft portion 8a.
And a cap 1 for retaining that is fitted and attached to the housing portion 11 and presses the shaft portion 8a so as not to come off from the housing portion 11.
2 and. Reference numeral 13 is a rubber base that supports the housing 11.

When arranging the floor board 6 using this support device, for example, the floor board support portion 7 is fixed to the floor board 6, while the lower end shaft portion 8a of the support bolt 8 is accommodated in the accommodation portion 11, and then the cap is removed. 12 is fitted in the housing portion 11, and the support bolt 8 is attached to the support base 10. Next, this support base 10
The support bolt 8 accompanied by is screwed into the floor plate supporting portion 7 fixed to the floor plate 6. Then, the floor board 6 is placed on the underfloor foundation surface 9 together with the supporting device.

In this state, when a driver is inserted into the groove 8c at the upper end of the support bolt 8 and the support bolt 8 is rotated, the floor plate supporting portion 7 moves up and down with respect to the support bolt 8 and the level of the floor plate 6 is adjusted.

[Problems to be solved by the invention]

By the way, in the former support device described above, if the support bolt 3 is excessively rotated during level adjustment, the support bolt 3
However, there is a problem in that it may come off the support 5. If it comes off, the support device is under the floor, so that reassembly is difficult and the floor board 1 is not sufficiently supported. Further, in order to prevent the support bolt 3 from coming off as much as possible, the male screw portion 3b of the support bolt 3 must be deeply screwed into the support base 5 in advance to adjust the relative position with respect to the support base 5. As a result, the number of man-hours has increased, and there has been a problem that the workability on site is deteriorated.

Further, in the latter supporting device, the support bolt 8 is prevented from coming off the support base 10 by the cap 12, but the cap 12 must be covered one by one to hold the support bolt 8 on the support base 10. Therefore, there is a problem that the man-hours are increased and the workability is deteriorated accordingly.

Then, the subject of this invention is holding | maintaining a support bolt so that it may not come out from a support stand, and reducing the man-hour of an assembly.

[Means for solving problems]

The technical means of the present invention for solving such a problem is that the support bolt is provided with a protruding shaft that projects from the end face of the shaft portion along the axis and has a diameter smaller than that of the shaft portion. The base is a base placed on the underfloor foundation surface, a support receiving portion fixed to the upper side of the base for supporting the end face of the shaft by inserting the protruding shaft, and a support receiving portion on the lower side of the support receiving portion. A push nut provided with a plurality of spring steel plate tongues that are arranged and pressed against the inserted protruding shaft, and a rotation guide that is fixed to the base and supports the push nut. .

[Action]

According to this means, when the support bolt is assembled to the support base, the protruding shaft of the support bolt is inserted into the support receiving portion. In this case, the tongue piece of the push nut is pushed by the projecting shaft and spreads while flexing and is pressed against the periphery of the projecting shaft, whereby the push nut is crimped to the projecting shaft. Further, in this case, since the push nut is supported by the rotation guide, it cannot be pulled out downward.

When the support bolt is inserted, the end surface of the shaft portion of the support bolt abuts against and is supported by the support receiving portion, and the support receiving portion receives the load of the floor plate without applying a load to the push nut. Become.

Further, in the support bolt, the push nut is in pressure contact with the projecting shaft, and the pressing force increases the frictional resistance between the projecting shaft and the tongue piece, so that the support bolt is prevented from coming off from the push nut. Further, since the push nut is also under the support receiving portion, it is pressed by the support receiving portion, so that the situation where the push nut is pulled out is prevented.

Rotate the support bolts to adjust the floorboard level. Then, the end surface of the shaft portion of the support bolt slides on the support receiving portion, while the push nut is pressure-bonded to the protruding shaft, so that the push nut rotates while being supported by the rotation guide. Due to this rotation, the floor plate support portion moves up and down with respect to the support bolt.

〔Example〕

Hereinafter, a floor board supporting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the basic structure of the supporting device according to the embodiment is that a floor plate supporting portion 21 that supports the floor plate 20, a supporting bolt 30 that supports the floor plate supporting portion 21, and an underfloor foundation surface 1 are provided.
9 and a support base 40 that supports the support bolt 30.

The floor plate support portion 21 is, as shown in FIGS. 2 (a) and 2 (b),
It is composed of a tubular portion 22 and a flange portion 24 fixed to the upper end portion 23 side of the tubular portion 22 and abutting on the lower surface of the floor plate 20. The upper end portion 23 of the tubular portion 22 projects from the contact surface of the flange portion 24, and is formed to have an outer diameter that fits into a hole portion 25 formed in the floor plate 20. A female screw portion 26 that is screwed into the support bolt 30 is formed inside the lower end portion of the tubular portion 22. Except for the female screw portion 26 of the tubular portion 22, the support bolt 30 has an inner diameter into which the support bolt 30 is loosely inserted. Reference numeral 27 is a mounting hole for a screw 28 for fixing the collar portion 25 to the floor plate 20.

As shown in FIG. 1, the support bolt 30 includes a male screw portion 31 formed on the upper side and screwed into the female screw portion 26 of the floor plate supporting portion 21, a lower shaft portion 32, and an end surface 34 of the shaft portion 32. And a projecting shaft 33 that has a smaller diameter than the shaft portion 32 and projects along the axis. Reference numerals 30a and 30b denote driver slits formed on the upper end of the male screw portion 31 and the lower end of the protruding shaft 33.

As shown in FIGS. 1, 3, and 4, the support base 40 includes a support receiving portion 41, a push nut 50, a rotation guide 55, and a base portion 60.

As shown in FIG. 5, the support receiving portion 41 is formed in a cup-shaped accommodating portion 42 in which the lower end of the shaft portion 32 of the support bolt 30 is rotatably accommodated, and an opening edge 42 a of the accommodating portion 42. And an outward flange 43. Storage part 4
An insertion hole 46 through which the protruding shaft 33 of the support bolt 30 is inserted is formed in the bottom surface 45 of the second member 2.

The push nut 50, as shown in FIGS. 6 (a), (b) and FIG. 7, is a ring-shaped base end formed to have an outer diameter substantially the same as the outer diameter of the bottom surface 45 of the accommodating portion 42. A part 51 and a plurality of spring steel plate tongues 53 that radially extend from the inner circumference 51a of the base end part 51 toward the center and form a through hole 52 having a diameter smaller than that of the protruding shaft 33 at the tip 53a thereof; It is composed of a tubular portion 54 that hangs from the outer periphery 51b of the base end portion 51.

As shown in FIGS. 8A and 8B, the rotation guide 55 has a bottom surface 58 in which the push nut 50 is rotatably accommodated and which supports the end surface of the tubular portion 54 of the push nut 50 from below. Cup-shaped storage section 56, and storage section 56
And an outward flange 57 formed on the opening edge 56a. An insertion hole 59 through which the protruding shaft 33 of the support bolt 30 is inserted is formed in the bottom surface 58 of the storage portion 56.

As shown in FIGS. 9 (a) and 9 (b), the base 60 is a rubber member formed in a truncated cone shape, and holes having different diameters are continuously formed along the axis thereof. . This hole is
Fitting hole 61 into which the housing portion 42 of the support receiving portion 41 is fitted.
An intermediate hole 63 formed by a collar-shaped portion 62 with which the bottom surface 45 of the storage portion abuts, and a storage portion 56 of the rotation guide 55.
Is formed of a fitting hole 64, a central hole 65 having the same diameter as the insertion hole 59 of the storage portion 56, and a lower hole 66 having a larger diameter than the central hole 65. Then, as shown in FIG. 9B, the base portion 60 is fitted with the accommodating portion 42 of the support receiving portion 41 in the fitting insertion hole 61, and the flange 43 thereof is adhered to the upper surface 60a of the base portion 60. The storage portion 58 of the guide 55 is fitted into the fitting hole 64 and the flange 57 is embedded,
It is integrally molded with the support receiving portion 41 and the rotation guide 55.

Further, as shown in FIG. 4, the push nut 50 is previously housed in the rotation guide 55 with the tubular portion 54 facing downward in the base portion 60 in which the support receiving portion 41 and the rotation guide 55 are integrated. To be done.

Therefore, when the floor board supporting device according to this embodiment is assembled to the floor board 20, for example, first, as shown in FIG. 1, the upper end portion 23 of the floor board support portion 21 is fitted into the hole 25 of the floor board 20. The floor plate supporting portion 21 is fixed to the floor plate 20 with screws 28.

On the other hand, separately from this, as shown in FIG. 4, the support bolts 30 are assembled to the support base 40. At this time, the protruding shaft 33 of the support bolt 30 is inserted into the insertion hole 46 of the support receiving portion 41, and the support bolt 30 is pushed. In this case, as shown in FIG. 7, the protruding shaft 33 is inserted while pushing out the tongue piece 53 of the push nut 50, and the tongue piece 53 is inserted into the tubular portion 5.
It will bend downward within 4. Further, in this case, the cylindrical portion 54 of the push nut 50 has the bottom surface 58 of the rotation guide 55.
Since it has been received at, it is prevented from going out downward. When the protruding shaft 33 is inserted, the spring action of the tongue piece 53 of the push nut 50 presses the tongue piece 53 against the protruding shaft 33, so that the push nut 50 is crimped to the protruding shaft 33. At the same time, the end surface 34 of the shaft portion 32 of the support bolt 30 contacts the bottom surface 45 of the support receiving portion 41. This assembling work is performed by the support bolt 30.
Since the work is a one-touch operation of just pushing into the support base 40, the work is extremely easy to perform and the work efficiency is good.

After that, the support bolt 30 with the support base 40 is screwed into the floor plate support portion 21 fixed to the floor plate 20. in this case,
If a driver is inserted into the slot 30b at the lower end of the support bolt 30 and the support bolt 30 is rotated, the support bolt 30 can be screwed in while holding the support base 40, which facilitates the work. ing.

Then, the assembled floor board supporting device is arranged on the underfloor foundation surface 19 together with the floor board 20. In this case, the support base 4
Even if the support bolt 30 comes off from 0, as shown in FIG. 4, the push bolt 50 is press-contacted to the support shaft 30 of the support bolt 30, and the press-fitting force causes the projection shaft 33 and the tongue piece 53 to contact. Has a large friction resistance, so that the push nut 50 is prevented from being pulled out. The push nut 50 is pressed by the rotation guide 55, and the bottom surface 45 of the support receiving portion 41 is pressed.
Further, the push nut 50 itself is prevented from coming off because it is abutted and pressed through the collar-shaped portion 62 of the base portion 60.

When the floor board support device is arranged on the underfloor foundation surface 19, when adjusting the level of the floor board 20, a driver is inserted into the slot 30a at the upper end of the support bolt 30 to rotate the support bolt 30. In this case, as shown in FIG. 4, the end surface 34 of the shaft portion 32 of the support bolt 30 has the support receiving portion 4
While being supported by the bottom surface 45 of the first housing portion 42, the bottom surface 45
On the other hand, the push nut 50 is pressed against the protruding shaft 33 while being in sliding contact with the upper portion, and therefore is rotated by the support bolt 30 while being supported by the rotation guide 55. In this case, the load of the floor plate 20 is received by the bottom surface 45 of the housing portion 45 and is not applied to the push nut 50 or the rotation guide 55. By this rotation, the floor plate support portion 21 moves up and down with respect to the support bolt 30.

FIG. 10 shows another example of the rotation guide. In this rotation guide 70, a disc body 73 is put on a storage part 72 with a flange 71 similar to the above, and the disc body 73 is joined at the flange 71. Coaxial insertion holes 74, 7 through which the protruding shaft 33 is inserted are formed in the storage portion 72 and the disk body 73.
5 has been opened.

When molding the base portion 76 to which the rotation guide 70 is fixed, as shown in FIG. 10, the push nut 50 is stored in advance in the storage portion 72 of the rotation guide 70, and then the disc body 73 is flanged. It is joined to 71. Next, the push nut 50 is integrally molded together with the rotation guide 70 and the support receiving portion 41.

In the above embodiment, the protruding shaft 33 is formed in a cylindrical shape, but the shape is not limited to this, and it may be formed in a polygonal shape such as a rectangular cross section.

[Effect of device]

As described above, according to the floor board supporting device of the present invention,
At the time of assembling the device, it can be assembled to the support base with one touch by simply pushing the support bolts, so that workability at a construction site is significantly improved. Moreover, once the support bolts are assembled to the support base, it becomes difficult for the support bolts to come off. Therefore, when the floor plate level is adjusted, the support bolts may come off the support base, resulting in incomplete support of the floor plate. Can be suppressed.

[Brief description of drawings]

FIG. 1 is a half sectional view showing the floor plate supporting device of the present invention together with its assembled state, FIGS. 2 (a) and 2 (b) are front and bottom views showing the floor plate supporting portion, and FIG. 3 is a view of the floor plate supporting device. FIG. 4 is a half sectional view showing an essential part of the floor board supporting device, and FIGS. 5 (a) and 5 (b) are a plan view and a front half sectional view showing a support receiving part of the support base. 6 (a) and 6 (b) are a plan view and a front sectional view showing a push nut of the support base,
FIG. 7 is a perspective view of a main part showing a state where the support bolt is assembled to the push nut, and FIGS. 8 (a) and 8 (b) are a plan view and a front half sectional view showing a rotation guide of the support base, and FIG. (A)
(B) is a plan view and a front cross-sectional view showing the base of the support, FIG. 10 is a cross-sectional view showing another example of the rotation guide together with its assembled state, and FIG. 11 is an example of a conventional floor board supporting device. FIG. 12 is a half sectional view showing the assembled state, and FIG. 12 is a sectional view showing another example of the conventional floor board supporting device together with the assembled state. 19 ...... Underfloor foundation surface 20 ...... Floor plate 21 ...... Floor plate support portion 30 ...... Support bolt 31 ...... Screw portion 32 ...... Shaft portion 33 ...... Projection shaft 34 ...... End surface 40 ...... Support base 41 ...... Support support 50: Push nut 53: Tongue 55, 70 Rotation guide 60, 76 Base

Claims (1)

[Scope of utility model registration request] 1. A floor plate bearing portion for supporting a floor plate, a support bolt for screwing and supporting the floor plate bearing portion to an upper screw portion, and a shaft portion mounted on the underfloor foundation surface and below the support bolt. In the floor board support device including a support base for supporting the support bolt, the support bolt is configured to include a protruding shaft that projects from the end surface of the shaft portion along the axis and has a diameter smaller than that of the shaft portion. A base that is placed on the surface, a support receiver that is fixed to the upper side of the base and that supports the end surface of the shaft by inserting the protruding shaft, and is provided below the support receiver. A floor plate support device comprising a push nut having a plurality of spring steel plate tongues pressed against the inserted protruding shaft, and a rotation guide fixed to a base part and supporting the push nut. .