JP3058573B2 - Insert female screw - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a female screw portion, which is inserted into a hole provided in an object to be inserted, such as a floor material, a wall, a ceiling, and various parts, so as to be mounted on the object. The present invention also relates to an insertion female screw tool into which a male screw is screwed into the female screw portion.

[0002]

2. Description of the Related Art As a conventional insertion female screw of this kind,
Mainly, (a) a male screw portion is provided on the outer periphery, and the male screw portion is screwed into a hole provided in the inserted object to prevent the male screw portion from falling out of the inserted object, and (b) an inserted object. In some cases, after being inserted into the hole provided in the hole, the portion inserted into the hole is expanded outward by some means so as not to fall out of the inserted object.

[0003]

A conventional insertion female screw of the type (a) cannot be used unless the material to be inserted is made of a material into which a male screw can be screwed. Further, since the external screw is formed on the outer periphery, the cost is reduced. There was a problem of getting high.

Further, the conventional insertion female screw of the type (b) requires an operation of inserting into a hole provided in the object to be inserted and then expanding the portion inserted into the hole outward by some means. Therefore, there is a problem that it takes time and effort to mount the device on the inserted object.

[0005] The present invention has been made in view of such circumstances, and one of the objects of the present invention is to provide a male screw portion and to screw into or out of the inserted object by the male screw portion. The present invention provides an insertion female screw which can be easily and firmly attached to an inserted object without inserting a part inserted into the hole provided in the hole and then expanding the part inserted into the hole outward by any means. is there.

Another object of the present invention is to provide an insertion female screw which does not rattle against an inserted object.

Another object of the present invention is to provide an insertion female screw which can firmly prevent rotation of an inserted object.

It is still another object of the present invention to provide an insertion female screw which can reduce the manufacturing cost.

[0009]

According to the present invention, there is provided an insertion female screw having a cylindrical member made of metal and a plate member.
The tubular member has a bulge formed by compressing the tubular member in the axial direction so that the peripheral wall of the tubular member bulges outward, and the tubular member is compressed in the axial direction. A brim-shaped part formed by bending the peripheral wall of the cylindrical material so as to be folded twice and spreading outwardly in a brim shape, and from one end of the cylindrical material to the other end side so as to enter the bulging portion. And a female screw portion provided on the inner periphery of the cylindrical member, wherein the plate member has a cylindrical member insertion hole, and the cylindrical member is inserted into the cylindrical member insertion hole. The tubular member is supported between the bulging portion and the brim-shaped portion of the tubular member while being inserted.

[0010]

According to the present invention, the thickness of the hole of the object to be inserted and the thickness of the bulging portion of the cylindrical material are set to appropriate sizes, and the side provided with the slit of the cylindrical material is inserted into the inserted material. The plate is inserted into the hole provided in the object until the plate comes into contact with the object.
Then, the bulging portion is strongly pressed against the wall surface of the hole of the inserted object, so that the inserted female screw is firmly attached to the inserted object.

At this time, if the tubular member is not provided with a slit, the tubular member is unlikely to be elastically deformed. Therefore, when the object to be inserted is made of a hard material to some extent, the tubular member is inserted into the hole. Insertion becomes difficult, and when the inserted object is made of a hard and brittle material of a certain degree or more, there is a risk that the hole portion of the inserted object may be destroyed, but in the present invention, a slit is provided in the tubular material. Therefore, the tubular member is easily elastically deformed, and the above-mentioned inconvenience can be prevented.

When the plate-shaped member is not provided, the cylindrical member locally contacts the wall surface of the hole of the inserted object only at the bulging portion, so that the cylindrical member rattles against the inserted object. Although there is a possibility that the plate-shaped member is provided in the present invention, the plate-shaped member is brought into contact with the object to be inserted, so that the entire internal female screw tool does not rattle against the object to be inserted. be able to. Further, the brim-shaped portion functions to restrain the plate-shaped material from moving in the direction opposite to the insertion direction of the cylindrical material with respect to the cylindrical material.

[0013] Since the insertion female screw can be manufactured mainly by press working, the manufacturing cost can be reduced.

Further, if the claw portion is formed by cutting and raising a part of the plate-shaped material and the claw portion is driven into the inserted object, the claw portion can be easily formed without using an adhesive or a nail. The insertion female screw can be more firmly attached to the insert and can be prevented from rotating, so that the occurrence of backlash can be more strongly prevented.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. 1 to 5 show a first embodiment of the present invention. In the present embodiment, the insertion female screw 1 is composed of a cylindrical tubular member 2 made of a metal such as steel and a plate member 3 made of a metal such as steel.

The tubular member 2 has a bulge 4 and a brim 5
Are provided. The bulging portion 4 compresses the bulging portion 4 by compressing the tubular member 2 in the axial direction in a state where it is restrained so as not to be deformed in the radial direction except for the portion where the bulging portion 4 is to be formed. It is formed by plastically deforming the peripheral wall of the portion to be formed so as to bulge outwardly over the entire circumference. Similarly, the brim-shaped portion 5 is used to connect the tubular material 2 to
By compressing in the axial direction while constrained so as not to deform in the radial direction except for the portion where the collar portion 5 is to be formed,
It is formed by plastically deforming the peripheral wall of the portion where the brim-shaped portion 5 is to be formed so as to be double folded over the entire circumference and spread radially outward in a brim shape. In terms of the processing surface, the difference in the shape between the collar portion 5 and the bulging portion 4 is mainly caused by the difference in the timing at which the compression in the axial direction ends. In other words, when the tubular material 2 is compressed,
First, as the bulging portion 4 bulges outwards and then continues to be compressed, it folds and doubles like the brim-like portion 5 and deforms so as to spread radially outward in a brim-like shape.

The cylindrical member 2 extends in the direction parallel to the axial direction of the cylindrical member 2 from the end on the side of the bulging portion 4 of the cylindrical member 2 toward the other end, and Is 6
The books are provided at positions at 180 degrees to each other. In the present embodiment, in the manufacturing process, the cut 6 is formed first, and then the bulging portion 4 is formed. Conversely, the bulge 4 is formed first, and then the cut 6 is formed. You may.

The other end of the tubular member 2 is narrowed down to a small diameter.
A female screw portion 7 is provided on the inner periphery thereof. In the present invention, the portion of the tubular member 2 where the female screw portion 7 is provided does not necessarily have to be reduced to a small diameter as in this embodiment.

The plate-like material 3 has a substantially square shape with four corners cut off, and is flat except for a claw portion 8 described later. The plate-shaped member 3 is provided with a cylindrical member insertion hole 9 (see FIG. 2) at a central portion, and when the cylindrical member 2 is inserted through the hole 9, the tubular member 2 expands. It is supported between the protrusion 4 and the brim-shaped portion 5 and extends in the direction perpendicular to the cylindrical member 2. In the present embodiment, in the manufacturing process, the plate-shaped material 3 is formed by first forming the brim-shaped portion 5 and then forming the bulging portion 4 with the cylindrical material 2 inserted into the hole 9. Although it is made to be supported between the bulging part 5 and the brim-like part 5, the brim-like part 5 may be formed after forming the bulging part 4 first, or the bulging part 4 may be formed. The collar portion may be formed at the same time. The plate member 3 may be completely fixed to the cylindrical member 2, may be only rotatable with respect to the cylindrical member 2, or may be rotatable with respect to the cylindrical member 2 and in the axial direction. May be movable within a certain range. When the plate member 3 is completely fixed to the tubular member 2, the diameter of the portion of the tubular member 2 inserted into the plate member 3 is adjusted to the bulging portion 4 or the brim-like portion 5. At the time of formation, they are sufficiently enlarged so that they are strongly pressed against the inner periphery of the hole 9, and the plate-like material 3 is firmly clamped from both sides by the bulging portion 4 and the brim-like portion 5. do it.

The claw portion 8 is formed near the four corners of the plate-shaped material 3 by cutting and raising the portion of the plate-shaped material 3, and the tip of the claw portion 8 has a sharp shape. And is directed toward the bulging portion 4 side.

FIG. 6 shows a use state of this embodiment.
As shown in this figure, the diameter of the hole 11 of the inserted object 10 and the diameter of the bulging portion 4 of the tubular material 2 are set to appropriate sizes, and the cut 6 of the tubular material 2 is provided. The inserted side is inserted into the hole 11 until the plate-shaped material 3 comes into contact with the inserted object 10. Then, since the bulging portion 4 is strongly pressed against the wall surface of the hole 11 of the inserted object 10, the inserted female screw 1 is firmly attached to the inserted object 10.

At this time, if the cutout 6 is not provided in the tubular member 2, the tubular member 2 is unlikely to be elastically deformed.
It becomes difficult to insert the cylindrical member 2 into the hole 11, and if the inserted object 10 is made of a hard and brittle material to a certain degree or more, there is a possibility that the hole 11 of the inserted object 10 may be broken. In the present invention, since the slits 6 are provided in the tubular member 2, the tubular member 2 is easily elastically deformed, and the above-mentioned inconvenience can be prevented.

When the plate-shaped member 3 is not provided, the cylindrical member 2 locally contacts the wall surface of the hole 11 of the inserted member 10 only at the bulging portion 4 so that the inserted member 10 On the other hand, there is a possibility that the tubular member 2 will rattle. However, since the inserted female screw 1 is provided with the plate-shaped member 3, the plate-shaped member 3 is brought into contact with the inserted member 10, so that the inserted member 10 is removed. In contrast, the insertion female screw 1 can be prevented from rattling.

In addition, the brim-shaped portion 5 is formed such that the plate-shaped material 3 is
In contrast to this, it has a function of restraining the cylindrical member 2 from moving in the opposite direction (downward in FIG. 6) to the insertion direction of the tubular member 2 into the inserted object 10.

Since the insertion female screw 1 can be manufactured mainly by press working, the manufacturing cost can be reduced.

Also, as in the present embodiment, the tabs 8
By inserting the claw portion 8 into the inserted object 10 as shown in FIG. 6, the inserted female screw tool 1 can be more firmly fixed to the inserted object 10 without using an adhesive or a nail. And can be stopped.

FIG. 7 shows an example in which the internal female screw 1 of this embodiment is used for a support structure for a floor material. In this case, a floor material such as a floor panel is used as the object 10 to be inserted. Screw support 1
2 is provided with a brim-like portion 13 near the lower end, and a male screw portion 14 is provided on the outer periphery of a portion above the brim-like portion 13. The screw support 12 has a male screw portion 14 screwed into the female screw portion 7 of the female screw tool 1 and a rubber base 16 on a foundation 15 such as a concrete floor surface.
Stand up through. Here, the rubber base 16 was placed on a foundation 15, the lower end of the screw post 12 was fitted into a hole 17 provided in the rubber base 16, and the lower surface of the collar 13 was penetrated by the screw post 12. The state is in contact with the upper surface of the rubber base 16 via the washer 18. Thus, the floor member 10 is supported on the foundation 15 by the insertion female screw 1 and the screw post 12, and the interval between the floor material 10 and the foundation 15 is such that the screw post 12 rotates with respect to the insertion female screw 1. Can be adjusted. In addition, the screw support 12
May be erected on the base 15 without the rubber base 16 interposed.

FIGS. 8 to 13 show a second embodiment of the present invention. In the present embodiment, the plate-shaped material 3 has a substantially circular shape, and three claw portions 8 are provided at intervals of 120 degrees. Other configurations are the same as in the first embodiment. In this embodiment, the same operation and effect as those of the above embodiment can be obtained.

FIG. 14 shows a third embodiment of the present invention. In the present embodiment, the claw portions 8 are not provided on the plate-shaped material 3. Other configurations are the same as those of the second embodiment.

Also in this embodiment, the same operation and effects as those of the above embodiments can be obtained except for the operation and effect of the claw portion 8. In the case where the claw portions 8 are not provided on the plate-shaped material 3 as described above, the plate-shaped material 3 can be made of a material other than metal.

In each of the above embodiments, the cylindrical member 2
Although two divisions 6 are provided in the present embodiment, the number of divisions may be other than 2 in the present invention.

Further, in each of the above embodiments, the portion other than the claw portion 8 of the plate-like material 3 is entirely flat, but in the present invention, a part or all of the plate-like material has a curved shape. You may do it.

The female insert screw of the present invention can also be used for objects other than flooring, such as walls, ceilings and various parts.

[0034]

As described above, the inserted female screw according to the present invention is provided with (a) a male screw portion, which is screwed into an inserted object by this male screw portion or inserted into a hole provided in the inserted object. The part inserted into the hole can be easily and firmly attached to the inserted object without expanding the part inserted into the hole by any means. (B) To prevent the inserted object from rattling (C) The manufacturing cost can be reduced. (D) By forming the claw portion on the plate-like material, the insertion female screw can be more firmly attached to the inserted object and rotated. It is possible to obtain excellent effects such as stopping the movement and preventing the generation of play more strongly.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of an insertion female screw according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a front view showing the first embodiment.

FIG. 4 is a side view showing the first embodiment.

FIG. 5 is a bottom view showing the first embodiment.

FIG. 6 is a sectional view showing a state in which the first embodiment is mounted on an inserted object.

FIG. 7 is a cross-sectional view showing a state where the first embodiment is used for a flooring support structure.

FIG. 8 is a plan view showing a second embodiment of the insertion female screw 1 according to the present invention.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a front view showing the second embodiment.

FIG. 11 is a side view showing the second embodiment.

FIG. 12 is a bottom view showing the second embodiment.

FIG. 13 is a rear view showing the second embodiment.

FIG. 14 is a sectional view showing a third embodiment of the insertion female screw according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 insertion female screw 2 cylindrical member 3 plate member 4 bulging portion 5 brim portion 6 cut 7 female screw portion 8 claw portion 9 cylindrical material insertion hole 10 object to be inserted (floor material) 11 hole of object to be inserted

Claims (2)

(57) [Claims] 1. A cylindrical member made of metal and a plate-shaped member, wherein the cylindrical member is compressed in an axial direction so that a peripheral wall of the cylindrical member is outward. A bulging portion formed by bulging, and a brim-shaped portion formed by compressing the cylindrical material in the axial direction so that the peripheral wall of the cylindrical material is double-folded and deformed so as to spread outwardly in a brim shape. And a notch that extends from one end of the tubular material toward the other end so as to enter the bulging portion, and a female screw portion provided on an inner periphery of the tubular material. Has a cylindrical material insertion hole, and is supported between the bulging portion of the cylindrical material and the collar portion in a state where the cylindrical material is inserted through the cylindrical material insertion hole. An insertion female screw tool characterized in that: 2. The insertion female screw according to claim 1, wherein the plate-shaped material is made of metal and has a claw portion formed by cutting and raising a part of the plate-shaped material.