JPH11108030A - Magnetic nut body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with a screw hole of a support body, facilitate fastening even in a narrow space, and prevent droppage of a nut body by composing the nut body at least of an assembly of a magnetic body, a screw hole body and a droppage preventive body linked thereto. SOLUTION: A nut body 1 is composed of a rectangular magnetic body 1A made of metal or rubber, a screw hole body 1B attached thereto, a base plate 1C integrated therewith, and a droppage preventive body 1D linked thereto by a wire 1d. A screw hole 1b of the screw hole body 1B is aligned concentrically with a screw body through-hole 2A formed on a specified position of a support body 2. The resultant body is attracted to the support body 2 by means of a magnet body IA, while the droppage preventive body 1D is engaged with the support body 2. A supported body 3 is abutted against a specified position of the support body 2. A screw body 4 is inserted into the screw body through- hole 3A and the screw body through-hole 2A and fastened thereto. The screw body 4 is screwed into the screw hole 1b to fasten the support body 2 to the supported body 3. It is thus possible to dispense with a screw hole of the support body, elongate the life, facilitate the fastening operation and prevent droppage of the nut body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a nut used for fastening a support, which is a structure, to a supported body.

[0002]

2. Description of the Related Art Conventionally, when a supported body such as a design cover is fixed to a surface side of a support which is a structure, it is necessary to directly screw the screw body into a screw hole provided in the support from the supported side. Usually, the head of the screw body is tightened while the nut body provided on the back side of the support is prevented from rotating with a tool such as a spanner.

[0003]

In the above-described conventional structure in which the screw body is directly screwed into the screw hole of the support, the supported body is detached over time, that is, the screw body is loosened (removed) and screwed (re-inserted). Repeated fixing) causes significant wear of the screw holes, which causes a serious problem in terms of service life of renewal of the support itself. Further, in the case of using the above-mentioned conventional nut body, since a tool is used as a detent support for the nut body, a work space is required, and the back side of the support body is in a closed state so that hands and tools do not enter. In such a case, there is a fundamental problem that the fastening operation is not possible and the design structure itself cannot be established. Further, in this case, even if the working space for supporting the nut body is sufficiently secured, the nut body cannot be visually observed, so that the alignment with the screw body does not work well. In the worst case, the nut body is dropped (lost). There was also a problem that would.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a long life by eliminating a screw hole of a support for fixing a supported body, to enable easy fastening even in a place where a fastening work space for the nut body is narrow, and to provide a support for the nut body. An object of the present invention is to provide a configuration of a nut body that can prevent the nut from falling off.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a method for fixing a support such as a design cover to a surface of a support which is a structure. A screw body such as a bolt or a screw that penetrates a screw body passing hole provided in the body is inserted from the front side of the supported body and fastened by a nut body arranged on the back side of the supported body. The nut body comprises at least a magnetic body and a screw hole body, and further comprises a combination of a fall prevention body connecting the magnetic body and the screw hole body to the support.

[0006]

The nut body according to the present invention comprises a magnetic body for abutting and fixing to the back side of the support, and a screw hole body integrated with the magnetic body to form a nut body with a screw hole for the screw body. While the main part is formed, the magnetic body and the screw hole are constituted by a combination of a fall prevention member that connects to the support, so that the positioning of the screw hole is performed by the screw passage hole of the support. If the screw holes are aligned and released, the magnetic force of the magnetic material strongly adheres to the support and is fixed. On the other hand, for example, when the screw body passage hole and the screw hole are misaligned, the nut body is strongly pressed by the tightened screw body, and the pushing force is equal to or higher than the magnetic force and the nut body falls off, As shown in the figure, the fall prevention body connected to the support exerts a backup function of stopping the fall. This drop prevention measure is particularly effective when the above structure is applied to a rotating machine, and is effective in preventing the nut body from entering a gear or the like and preventing a serious failure associated therewith.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In the figure, a nut body 1 according to the present invention is shown.
Is a rectangular magnet 1A made of metal or rubber material
And a screw hole 1B fixedly attached to a part thereof, and a joint (welding or bonding) 1A with the magnet 1A.
At A, it is joined with the screw hole 1B (welding or bonding etc.)
The substrate 1C integrated by the portion 1BB, one end of a string 1d is connected to a part of the substrate 1C, and the other end of the string 1d is connected to a fall prevention body 1D. Of the nut body 1 (magnet body 1A,
The screw hole 1B and the substrate 1C) are prevented from falling off. When the supported body 3 such as a design cover is fastened and fixed to the support body 2 with the screw body 4 as shown in the drawing, first, the support body 3 is positioned concentrically with the screw body passage hole 2A provided at a predetermined position of the support body 2. Screw hole 1b of screw hole 1B
And the whole is attracted to the support 2 by the magnetic force of the magnet body 1A in this state. Next, the fall prevention body 1D is mounted and engaged with a part (upper end) of the support 2. Then, the supported member 3 is brought into contact with a predetermined position to be fixed to the supporting member 2,
The screw body 4 is inserted into the screw body passage hole 3A and the screw body passage hole 2A, and tightened with a screwdriver or the like.
B is screwed into the screw hole 1b of the supporting member 2 and the supported member 3
Are fastened and fixed.

At the time of the above-mentioned fastening operation, the screw body passage hole 2
If the screw body 4 is strongly pushed in with the position of the screw body 1 and the screw hole 1b being displaced, the magnet body 1A loses the attraction force and falls off. However, the magnet body 1A, the screw hole body 1B and the substrate 1
Since the entirety of C is connected to the support 2 by the string 1d and the fall prevention body 1D, the fall thereof is prevented. This is effective when the supported member 3 covers a rotating machine such as a gear, and has an effect of eliminating the cause of damage to the rotating member.

In the combination of the illustrated structures,
A part of the nut body 1 can be visually recognized from the back side of the support body 2 and the supported body 3, and the normal nut body 1 can be supported in a detent by a tool such as a spanner. For example, a common inner deck cover of an escalator balustrade can be used. In the case of a structure such as the back side of the above, in which it is difficult to visually check and insert the hand (a configuration like the imaginary line Z in FIG. 2), the magnet body 1A itself stops the rotation of the screw hole body 1B (by screwing the screw body 4). (Response to the generated rotational force). Further, since there is no screw hole in the support 2 that affects the life, the support 2 itself does not need to be renewed as in the related art. On the other hand, when the screw hole 1b of the nut body 1 is worn over time, the function may be restored by replacing it with a new one as a consumable item. Note that the nut body 1 of the present invention may have a configuration in which the string 1d is directly connected to the magnet body 1A or the screw hole body 1B without the substrate 1C.

[0010]

According to the present invention described above, a nut body having magnetism that eliminates the screw hole of the support for fixing the supported body, has a long service life, can be easily fastened, and can prevent the nut body from falling off. Can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a nut body and a structure showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Nut body, 1A ... Magnet body, 1AA ... Joint part, 1B ...
Screw hole 1BB: Joint, 1b: Screw hole, 1C: Substrate, 1D: Fall prevention body 1d: String, 2: Support body, 2A: Screw body passage hole, 3: Supported body 3A: Screw body passage hole, 4 Screw body

Claims (1)

[Claims] An object of the present invention is to fix a support such as a design cover on a surface side of a support which is a structural body, such as a bolt which penetrates a screw passage hole provided in the support and the support. A screw body is inserted from the front side of the supported body and fastened with a nut body arranged on the back side of the supported body, wherein the nut body includes at least a magnetic body and a screw hole body. And a nut body having magnetism, wherein the magnetic body and the screw hole body are constituted by a combination of a fall prevention body connecting the support body to the screw body.