JPH05202604A - Supporting leg of panel for double floor - Google Patents

Abstract

PURPOSE:To secure a larger height adjustment margin while enabling the mainte nance and readjustment of a height after adjustment. CONSTITUTION:A pipelike sleeve 3 is furnished at a penetration hole 2 which penetrates both sides of a floor panel 1. A housing portion 4 is formed at an upper part space in the sleeve 3. A female screw portion 5 is provided at the lower part space of the sleeve 3. The diameter of the female screw portion 5 is made smaller than that of the housing portion 4, and a positioning step portion 6 is provided between the female screw portion 5 and the housing portion 4. A flange piece 7 on which the opening edge of the penetration hole 2 is mounted, is provided at the lower portion of the sleeve 3. A supporting leg main body 9 at whose upper portion a screw-driving groove 8 for rotary operation is provided, is screwed into the female screw portion 5. A loosening- stop nut 11 whose upper portion possesses a screw-driving groove 10 for rotary operation, is screwed onto the support leg main body 9 projecting from the female screw portion 5 into the housing portion 4. The lower end of the nut 11 is butted against the positioning step portion 6.

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 on a floor slab of a building at a predetermined height to form a double floor.

[0002]

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

[0003]

However, in the conventional example as described above, there is a problem that the height dimension cannot be readjusted after the construction if the height adjusting portion is adhered and fixed by the adhesive a. there were. Therefore, for example, as disclosed in Japanese Utility Model Laid-Open No. 61-150930, there is provided a device that allows the height dimension after the adjustment and the readjustment. As shown in FIG. 6, these are the upper side of the support leg body 9 whose height dimension can be adjusted by adjusting the screwing depth to the sleeve 3 having the female screw portion 30 formed on the inner surface. A loosening prevention screw 40 is screwed onto the screw, and the heightening dimension after adjustment can be maintained and readjusted by the loosening prevention screw 40. However, the locking screw 40 is arranged in series within the sleeve 3 with respect to the support leg body 9, and therefore,
The lock screw 40 is always arranged in the sleeve 3 at the upper part of the support leg body 9, and the screwing depth of the support leg body 9 in the sleeve 3 is reduced by the height dimension E of the lock screw 40. Therefore, there is a problem that the height adjustment allowance (S ₁ ) is reduced by the height dimension E of the loosening prevention screw 40.

An object of the present invention is to solve the above-mentioned problems, and to provide a double floor panel which allows a large height adjustment allowance while maintaining and re-adjusting the height dimension after adjustment. It is intended to provide support legs.

[0005]

According to the present invention, in order to achieve the above object, a through hole 2 penetrating the front and back of a floor panel 1 is formed.
The tubular sleeve 3 is attached to the sleeve 3, the housing 4 is formed in the upper space of the sleeve 3, and the female screw portion 5 is formed in the lower space.
And a positioning step portion 6 is provided between the female screw portion 5 and the accommodating portion 4 so that the female screw portion 5 has a smaller diameter than the accommodating portion 4, and the opening edge of the through hole 2 is placed under the sleeve 3. A support leg body 9 provided with a piece 7 and a screwdriver groove 8 for rotating operation is screwed to the female screw portion 5, and a locking nut 11 having a screwdriver groove 10 for rotating operation is provided on the female screw portion. 5 is screwed to the support leg main body 9 projecting into the storage portion 4 from 5, and the lower end of the locking nut 11 is brought into contact with the positioning step portion 6.

[0006]

The height dimension of the floor panel 1 can be freely adjusted by adjusting the screwing depth of the support leg body 9 with the female screw portion 5 of the sleeve 3. By contacting the lower end of the locking nut 11 screwed to the support leg body 9 protruding further into the storage portion 4 with the positioning step portion 6 formed between the storage portion 4 and the female screw portion 5 of the sleeve 3. The height dimension after adjustment can be maintained. Further, the height dimension can be easily readjusted by loosening the loosening prevention nut 11 and adjusting the screwing depth of the support leg body 9. To prevent the loosening by the loosening prevention nut 11, the lower end of the loosening prevention nut 11 screwed to the upper part of the support leg body 9 protruding from the female threaded portion 5 of the sleeve 3 into the accommodation portion 4 is connected to the female threaded portion 5 and the accommodation portion 4. The height dimension of the locking nut 11 affects the screwing depth of the support leg main body 9 to the female screw portion 5 because it is performed by contacting the positioning step portion 6 formed between The height dimension of the storage part 4 in the sleeve 3 can be used as a height adjustment allowance, and the height dimension after adjustment can be maintained and readjusted. A large adjustment allowance can be taken.

[0007]

The present invention will be described below in detail based on the illustrated embodiments. As shown in FIG. 2, the supporting legs are a sleeve 3 mounted in through holes 2 penetrating the front and back of a floor panel 1, a supporting leg main body 9 screwed to a lower portion of the sleeve 3, and a spring washer in the sleeve 3. The main body is constituted by a locking nut 11 which is screwed to the upper part of the support leg body 9 via 12. The through hole 2 of the floor panel 1 into which the sleeve 3 is mounted is formed by inserting a cylindrical plastic bush 13 into the through hole 1a provided in the floor panel 1, and the sleeve 3 includes the plastic bush 13. It is designed to be inserted inside.

The sleeve 3 is formed by a tubular body 3a, and a storage portion 4 is provided in an upper space inside the tubular body 3a.
A female screw portion 5 is provided in the lower space. Female thread 5
A flange piece 7 is provided so as to project from the lower outer surface of the sleeve 3 provided with the above, and the opening edge of the through hole 2 of the floor panel 1 is placed on this flange piece 7. A knurl 14 is formed on the outer surface of the cylindrical body 3 a on the upper side of the collar piece 7. The female screw portion 5 has a smaller diameter than the housing portion 4, and a positioning step portion 6 is formed between the female screw portion 5 and the housing portion 4. 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 portion 9a to which a rubber cap 15 is attached. A screwdriver groove 8 for rotating the support leg body 9 is provided above the bolt 9b.

The locking nut 11 screwed onto the upper portion of the support leg main body 9 protruding into the storage portion 4 has a diameter slightly smaller than the inner diameter of the storage portion 4, and the support leg is provided inside the storage portion 4. The screwing depth to the main body 9 can be freely adjusted. A screwdriver groove 10 for rotating operation for rotating the locking nut 11 is provided on the upper part of the locking nut 11, so that it can be rotated by a dedicated tool 17 as shown in FIG. It has become. This tool 17 has a screwdriver groove 1 at the tip of the cylindrical body 17a.
An engaging projection 17b that is engaged with 0 is provided, and the engaging projection 17b can be engaged with the screwdriver groove 10 by inserting the upper portion of the support leg body 9 into the cylindrical body 17a. By doing so, the locking nut 11 can be freely rotated to adjust the screwing depth to the support leg body 9.

As shown in FIG. 1, the sleeve 3 is mounted in the through hole 2 of the floor panel 1, the support leg body 9 is screwed into the female screw portion 5 of the sleeve 3, and the female screw portion is accommodated in the storage portion 4. The floor panel 1 is supported at a predetermined height by screwing a loosening prevention nut 11 onto the upper portion of the support leg main body 9 protruding from the sleeve 5.
The height dimension of the floor panel 1 can be freely adjusted by adjusting the screwing depth of the support leg main body 9 to the female screw portion 5 of, and the loosening screwed to the upper part of the support leg main body 9 By contacting the lower end of the lock nut 11 with the positioning step portion 6 formed between the storage portion 4 and the female screw portion 5 via the spring washer 12, the height dimension after adjustment can be maintained. . Also, loosen the lock nut 11 to support the leg body 9
It is possible to easily readjust the height dimension by readjusting the screwing depth of. The locking by the locking nut 11 is performed by abutting the lower end of the locking nut 11 on the positioning step 6 formed between the female screw portion 5 and the storage portion 4, so that the locking nut 11 is loosened. Height dimension E of lock nut 11 and lock nut 11
The engagement margin G does not affect the screwing depth of the support leg body 9 to the female screw portion 5, that is,
The locking nut 11 is designed to prevent locking by contacting the lower end with a positioning step 6 formed between the female screw portion 5 and the storage portion 4, and depends on the depth of screwing into the female screw portion 5. The support leg body 9 can be prevented from loosening irrespective of the protruding size of the support leg body 9 into the storage portion 4. For example, as shown in FIG. The screwing depth of the support leg main body 9 can be adjusted until the upper end is located at the upper end of the through hole 2, and the length dimension L of the storage portion 4 in the sleeve 3 is set to the total length of the support leg main body 9
Can be used as a height adjustment allowance, and a large height adjustment allowance can be taken while maintaining the height dimension after adjustment and allowing readjustment. In the figure, t is the thickness of the spring washer 12.

[0011]

As described above, according to the present invention, a cylindrical sleeve is attached to the through holes penetrating the front and back of the floor panel, a storage portion is formed in the upper space of the sleeve, and a female screw portion is provided in the lower space. Provide a positioning step part between the internal thread part and the storage part by making the internal thread part smaller in diameter than the storage part, and provide a collar piece on which the opening edge of the through hole is placed on the lower part of the sleeve and rotate it on the upper part. The support leg body with the screwdriver groove for use is screwed to the female screw part, and the locking nut with the screwdriver groove for rotating operation is screwed to the support leg body protruding from the female screw part into the storage part. Since the lower end of the lock nut is in contact with the positioning step, the lower end of the lock nut screwed to the support leg body protruding from the female screw part into the storage part is brought into contact with the positioning step to adjust the height after adjustment. The size can be maintained Also, it is possible to easily readjust the height dimension by loosening the loosening prevention nut and adjusting the screwing depth of the support leg body. This is done by abutting the lower end of the locking nut, which is screwed on the upper part of the support leg main body protruding from the female screw portion into the storage portion, to the positioning step formed between the female screw portion and the storage portion. Since the height of the lock nut does not affect the screwing depth of the support leg body to the female thread, the length of the storage part inside the sleeve can be adjusted by adjusting the height. The height adjustment allowance can be increased while the height dimension after adjustment can be maintained and readjusted.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a partially broken exploded view of the above.

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

FIG. 4 is a perspective view of a tool for rotating the lock nut of the above.

FIG. 5 is a sectional view of a conventional example.

FIG. 6 is a cross-sectional view of another conventional example.

[Explanation of symbols]

 1 Floor panel 2 Through hole 3 Sleeve 4 Storage part 5 Female screw part 6 Positioning step part 7 Collar piece 8 Screwdriver groove 9 Support leg body 10 Screwdriver groove 11 Locking nut

Claims (1)

[Claims] 1. A tubular sleeve is mounted in through holes penetrating the front and back of a floor panel, a storage portion is formed in an upper space of the sleeve, and a female screw portion is provided in the lower space. As a small diameter, a positioning step is provided between the female screw part and the storage part, a collar piece on which the opening edge of the through hole is placed is provided at the bottom of the sleeve, and a screwdriver groove for rotating operation is provided at the top. The support leg body is screwed into the female thread part, and the lock nut with a screwdriver groove for rotation operation on the upper part is screwed into the support leg body protruding from the female thread part into the storage part, and the lower end of the lock nut is positioned at the positioning step. A support leg for a double-floor panel, characterized in that the support leg is formed by abutting against the section.