JP2575567B2 - Double floor panel support legs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support leg for a double floor panel for supporting a floor panel at a predetermined height on a floor slab of a building to form a double floor.

[0002]

2. Description of the Related Art Conventionally, various support legs for forming a double floor by supporting a floor panel 1 at a predetermined height on a floor slab a have been provided. It is important to maintain the height of the support leg after the height adjustment for a long period of time. As a method of adjusting and maintaining the height, for example, as shown in FIG. 11, an adhesive A is used.

[0003]

However, in the conventional example described above, if the height adjustment portion is bonded and fixed by the adhesive a, the height dimension cannot be readjusted after construction. there were. For this reason, for example, Japanese Unexamined Utility Model Publication No. 61-150930 discloses a device capable of maintaining and adjusting the height after the adjustment. As shown in FIG. 12, the upper side of the support leg main body 9 whose height can be adjusted by adjusting the screwing depth to the sleeve 3 having the female screw portion 30 formed on the inner surface as shown in FIG. A locking screw 40 is screwed through a spring washer 50 so that the adjusted height can be maintained and readjusted by the locking screw 40. However, the locking screw 40 and the sleeve 3
The upper surface portion of the support leg body 9 to which the spring washer 50 contacts is smooth. Therefore, when a load such as vibration is repeatedly applied, the locking screw 40 or the spring washer 50 is loosened and slips in the rotating direction, and the loosening is performed. There is a problem that the set screw 40 becomes loose and the height position changes.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and to make it possible to maintain and re-adjust the height dimension after adjustment and to easily change the height dimension after adjustment. The purpose of the present invention is to provide a double-floor panel support leg without a floor.

[0005]

According to the present invention, in order to achieve the above object, a through hole 2 penetrating through the front and back of a floor panel 1 is provided.
A sleeve 3 is mounted on the sleeve 3, and a storage section 4 is formed in an upper space inside the sleeve 3, and a female thread 5 is formed in a lower space.
And a positioning step portion 6 is provided between the female screw portion 5 and the storage portion 4 so that the female screw portion 5 has a diameter smaller than that of the storage portion 4, and a flange on which an opening edge of the through hole 2 is placed below the sleeve 3. A support leg main body 9 provided with a piece 7 and a screwdriver groove 8 for rotation operation provided on an upper portion thereof is screwed to the female screw portion 5, and a locking nut 11 having a screwdriver groove 10 for rotation operation on the upper portion is provided with a female screw portion. 5 and is screwed to a support leg body 9 projecting into the storage section 4.
The concave portion 12a and the convex portion 1
2b, a wave washer 12 formed in an alternately continuous wave shape is attached, and the wave washer 12 is sandwiched between the locking nut 11 and the positioning step 6, and the uneven portions 12a, 1
2b, the upper and lower surfaces of the positioning step 6 and the locking nut 11 are brought into contact with each other.
Are provided on the lower surface.

[0006]

The height of the floor panel 1 can be freely adjusted by adjusting the screwing depth of the support leg body 9 to the female screw portion 5 of the sleeve 3. The lower end of the locking nut 11 screwed to the support leg body 9 projecting further into the storage portion 4 abuts on the positioning step 6 formed between the storage portion 4 and the female screw portion 5 of the sleeve 3. The height dimension after the adjustment can be maintained. In addition, the height dimension can be easily readjusted by loosening the lock nut 11 and adjusting the screwing depth of the support leg body 9. Then, the concave and convex portions 12a, 12 of the wave washer 12 formed in a wave shape by tightening the locking nut 11 are formed.
b and the uneven contact portions 19 provided on the upper surface of the positioning step portion 6 and the lower surface of the locking nut 11 mutually match, and the locking nut 1 is caused by a load such as vibration.
1 and the wave washer 12 are prevented from rotating in the loosening direction, and the loosening is reliably prevented.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. As shown in FIG. 2, the support legs are a sleeve 3 attached to a through hole 2 penetrating the front and back of the floor panel 1, a support leg body 9 screwed to a lower portion of the sleeve 3, and a wave washer in the sleeve 3. The main body is constituted by the locking nut 11 screwed onto the upper part of the support leg body 9 via the center 12. The through hole 2 of the floor panel 1 to which the sleeve 3 is to be mounted is formed by inserting a cylindrical plastic bush 13 into a through hole 1 a provided in the floor panel 1. It is designed to be inserted inside.

[0008] As shown in FIG.
The storage space 4 is provided in the upper space in the cylindrical body 3a, and the female screw 5 is provided in the lower space. A flange piece 7 protrudes from the lower outer surface of the sleeve 3 provided with the female screw portion 5, and the opening edge of the through hole 2 of the floor panel 1 is placed on the flange piece 7. A knurl 14 is provided on the outer surface of the cylindrical body 3a on the upper side of the flange piece 7.
Are formed. The female screw portion 5 has a smaller diameter than the storage portion 4, and a positioning step 6 is formed between the female screw portion 5 and the storage portion 4. As shown in FIGS. 8 and 9, an uneven contact portion 19 is provided on the upper surface of the positioning step portion 6. The uneven contact portion 19 is provided with uneven portions 12 a and 12 b of the wave washer 12 described later. So that they match. The support leg body 9 to be screwed to the female screw portion 5 of the sleeve 3 is configured by projecting a bolt 9b having a male screw portion 16 on the outer surface from a support base 9a to which a rubber cap 15 is attached. On the upper part of the bolt 9b, a screwdriver groove 8 for rotating operation for rotating the support leg main body 9 is provided.

The locking nut 11 screwed onto the upper part of the support leg body 9 projecting into the storage part 4 has a slightly smaller diameter than the inner diameter of the storage part 4, as shown in FIG. The depth of screwing to the support leg body 9 in the storage section 4 can be freely adjusted. A screwdriver groove 10 for rotating operation for rotating the lock nut 11 is provided at an upper portion of the lock nut 11.
It can be rotated by a dedicated tool 17 as shown in FIG. This tool 17 is a cylinder 17
a engagement projection 17b engaged with the screwdriver groove 10 at the tip of
The engaging projection 17b is screwed so that the upper part of the support leg body 9 is inserted into the cylindrical body 17a.
, So that the locking nut 11 can be freely rotated to support the support leg body 9.
The screwing depth of the screw can be adjusted. As shown in FIG. 6, an uneven contact portion 19 is provided on the lower surface of the locking nut 11, and the uneven contact portion 1 is provided.
Numeral 9 matches the concave and convex portions 12a and 12b of the wave washer 12 described later.

A wave washer 12 mounted on the upper part of the support leg body 9 projecting into the storage part 4 and held between the lower surface of the locking nut 11 and the upper surface of the positioning step 6 is shown in FIG.
As shown in FIG. 1, the concave portions 12a and the convex portions 12b are formed in a wave shape that is alternately continuous, and when sandwiched between the locking nut 11 and the positioning step 6, as shown in FIG. The concave and convex portions 12a and 12b are mutually matched with the concave and convex contact portions 19 provided on the lower surface of the locking nut 11 and the upper surface of the positioning step 6, respectively. Here, the uneven portions 12a and 12b of the wave washer 12
The contact portion 19 of the locking nut 11 and the positioning step 6
The relationship with the contact portion 19 is as follows.
Height of contact portion 19 (F) <height of contact portion 19 of positioning step 6 (E), locking nut 11
Height of contact portion 19 (F)> height of contact portion 19 of positioning step 6 (E), height of contact portion 19 of locking nut 11 (F) = contact of positioning step 6 The height dimension (E) of the portion 19 can be considered, and in any case, the locking effect can be obtained.

As shown in FIG. 1, the sleeve 3 is attached to the through hole 2 of the floor panel 1, the support leg body 9 is screwed to the female screw 5 of the sleeve 3, and the female screw The floor panel 1 is supported at a predetermined height by screwing a locking nut 11 onto an upper portion of a support leg body 9 protruding from the sleeve 5.
The height of the floor panel 1 can be freely adjusted by adjusting the screwing depth of the support leg body 9 to the female screw portion 5 of the female screw portion 5, and furthermore, the looseness screwed onto the upper portion of the support leg body 9 The height of the adjusted nut can be maintained by abutting the lower end of the lock nut 11 on the positioning step 6 formed between the storage section 4 and the female screw section 5 via the wave washer.
Further, the height dimension can be easily readjusted by loosening the locking nut 11 and adjusting the screwing depth of the support leg body 9 again. And nut for locking 1
1 is performed by bringing the lower end of the lock nut 11 into contact with the positioning step portion 6 formed between the female screw portion 5 and the storage portion 4, so that the height of the lock nut 11 is reduced. The length E and the allowance G of the locking nut 11 do not affect the screwing depth of the support leg body 9 to the female screw portion 5, that is, the locking nut 11 has a lower end with a female screw. By contacting the positioning step 6 formed between the section 5 and the storage section 4, the locking is performed, and the support leg in the storage section 4 is formed by the screwing depth to the female screw section 5. The support leg body 9 can be prevented from loosening irrespective of the protrusion size of the main body 9. For example, as shown in FIG.
The screwing depth of the support leg body 9 can be adjusted until the upper end of the support leg body 9 is positioned at the upper end of the through hole 2. It can be used as a height adjustment allowance, and a large height adjustment allowance can be taken while maintaining and re-adjusting the height dimension after adjustment. In the drawing, t is the thickness dimension of the wave washer. Also, the concave and convex portions 12a and 12b of the wave washer 12 formed in a wave shape by tightening the locking nut 11 are formed.
The upper surface of the positioning step portion 6 and the uneven contact portion 19 provided on the lower surface of the locking nut 11 coincide with each other, and the locking nut 11 is caused by a load such as vibration.
And the wave washer 12 is prevented from rotating in the loosening direction, and the loosening is reliably prevented.

[0012]

As described above, according to the present invention, a cylindrical sleeve is mounted in a through hole penetrating the front and back of a floor panel, a storage portion is formed in an upper space in the sleeve, and a female screw portion is formed in a lower space. The female screw part is smaller in diameter than the storage part, the positioning step is provided between the female screw part and the storage part, the flange piece on which the opening edge of the through hole is placed is provided at the lower part of the sleeve, and the rotation operation is provided at the upper part The supporting leg body provided with a screwdriver groove for screwing is screwed to the female screw portion, and a locking nut having a screwdriver groove for rotation operation is screwed to the supporting leg body projecting into the storage portion from the female screw portion, Attach a wave washer formed in a wavy shape in which the concave and convex portions are alternately continuous on the upper part of the support leg body protruding into the storage part, and clamp this wave washer between the locking nut and the positioning step, Concavo-convex shape that will match each other with corrugated washer irregularities Since the contact portion is provided on the upper surface of the positioning step portion and the lower surface of the locking nut, the lower end of the locking nut screwed to the support leg body projecting into the storage portion from the female screw portion is brought into contact with the positioning step portion. The height dimension after adjustment can be maintained, and the height dimension can be easily readjusted by loosening the locking nut and adjusting the screwing depth of the support leg body. Things. Furthermore, the uneven portion of the wave washer formed in a wavy shape by tightening the locking nut and the uneven contact portion provided on the upper surface of the positioning step portion and the lower surface of the locking nut are in a state in which they match each other. This prevents the lock nut or wave washer from rotating in the loosening direction due to the load of vibration, etc., and ensures that the lock is securely performed and the adjusted height can be maintained for a long time. It is.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, in which FIG. 1A is a cross-sectional view, and FIG. 1B is an enlarged cross-sectional view of a portion A in FIG.

FIG. 2 is an exploded view of the above, with a part cut away.

FIG. 3 is a cross-sectional view showing the same operation.

FIG. 4 is a perspective view of a tool for rotating the locking nut according to the first embodiment;

FIG. 5 shows the locking nut according to the first embodiment;
(A) is a plan view and (b) is a cross-sectional view.

FIG. 6 is an enlarged cross-sectional view of a part shown in FIG.

FIGS. 7A and 7B show the same sleeve, in which FIG. 7A is a plan view and FIG. 7B is a partially cutaway front view.

FIG. 8 is an enlarged cross-sectional view of a portion C in FIG.

FIG. 9 is an enlarged cross-sectional view of a portion shown in FIG.

FIGS. 10A and 10B show the wave washer according to the embodiment, wherein FIG. 10A is a plan view and FIG. 10B is a perspective view.

FIG. 11 is a sectional view of a conventional example.

FIG. 12 is a sectional view of another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor panel 2 Through-hole 3 Sleeve 4 Storage part 5 Female screw part 6 Positioning step part 7 Flange piece 8 Screw driving groove 9 Support leg main body 10 Screw driving groove 11 Loose lock nut 12 Wave washer 12a Depression 12b Convex part 19 Contact part

Claims (1)

(57) [Claims] 1. A tubular sleeve is mounted in a through hole penetrating the front and back of a floor panel, a storage portion is formed in an upper space in the sleeve, and a female screw portion is provided in a lower space. Also, a positioning step is provided between the female screw portion and the storage portion as a small diameter, a flange piece on which the opening edge of the through hole is placed is provided at the lower portion of the sleeve, and a screwdriver groove for rotating operation is provided at the upper portion. The support leg body is screwed to the female screw part, and a locking nut having a screwdriver groove for rotation operation at the top is screwed to the support leg body projecting into the storage part from the female screw part, and protruding into the storage part. Attach a wave washer formed in a wavy shape in which concave and convex portions are alternately continuous at the top of the upper part, clamp this wave washer between the locking nut and the positioning step, and Positioning step for uneven contact that will match each other A support leg for a panel for a double floor, wherein the support leg is provided on an upper surface of a lower surface and a lower surface of a locking nut.