JP2955098B2 - Steady stop structure for male screw member screwed to cylindrical member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION This invention is, down at least one end
The male screw member screwed into the female screw portion provided on the inner periphery of the small-diameter portion of the cylindrical member which is formed as the small-diameter portion has a cylindrical shape due to backlash of the screwing portion or deformation of the peripheral wall of the small-diameter portion. The present invention relates to an anti-sway structure for a male screw member that prevents relative swinging of a male member.

[0002]

2. Description of the Related Art At least one end is narrowed to form a small diameter portion.
When a male screw member is screwed into a female screw portion provided on the inner periphery of the small-diameter portion of the cylindrical member, the male screw member is formed on the cylindrical member by play of the screw portion, deformation of the peripheral wall of the cylindrical portion, or the like. May swing relatively. Conventionally, in order to prevent such relative deflection of the male screw member with respect to the cylindrical member, while increasing the screwing accuracy between the cylindrical member and the male screw member, the rigidity of the small diameter portion of the cylindrical member is reduced. I needed to make it bigger.

[0003]

However, in such a case, there is a problem that the cost becomes very high.

[0004] The present invention has been made in view of the above circumstances, and a female screw provided at the inner periphery of the small diameter portion of a cylindrical member having at least one end narrowed to a small diameter portion. It is an object of the present invention to provide an anti-sway structure for an externally threaded member that can prevent at a low cost relative deflection of an externally threaded member screwed to a portion with respect to a cylindrical member.

[0005]

According to the present invention, there is provided a steady rest structure for a male screw member in which at least one end is narrowed and a small diameter portion is formed.
And a female screw portion provided on the inner periphery of the small diameter portion of the cylindrical member, a male screw member screwed to the female screw portion, and the female screw portion of the male screw member .
A steadying body screwed into the vicinity of the threaded portion, and the steadying body is disposed so as to surround the axis of the steadying body, and the steadying body is rotated in a tightening direction with respect to the male screw member. Thus, the pressing member has an inner surface side and an abutting portion that is in contact with the outer peripheral side of the tubular member.

[0006]

According to the present invention, since the inner surface of the holding portion of the steady rest abuts against the outer peripheral side of the cylindrical member, the accuracy of screwing the cylindrical member and the male screw member can be increased, or the cylindrical member can be made more precise. Before
The relative deflection of the male screw member with respect to the cylindrical member can be prevented without increasing the rigidity of the small diameter portion .

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIGS. 1 and 2 show an embodiment of a steady rest structure according to the present invention. This embodiment is an example in which the present invention is applied to a floor panel support structure. 3 to 6 show the steady rest 1 alone in this embodiment.
Is formed integrally with a shoulder 1a, a cylindrical portion 1b, and four holding portions 1c by press working. The shoulder 1
a has a substantially rectangular shape, and the cylindrical portion 1b has a shoulder portion 1a.
From the center of the upper part in the direction perpendicular to the shoulder 1a. A female screw portion 1d is provided on the inner periphery of the cylindrical portion 1b. Each holding portion 1c has a tongue-like shape, and extends from four sides of the shoulder portion 1a in a direction opposite to the cylindrical portion. As shown in FIG. 7, the portion other than the vicinity of the front end of each holding portion 1c is flat and has an axial line of the anti-vibration body 1 (the axial line of the female screw portion 1d) so as to spread outward toward the distal end side. The portion near the tip of each holding portion 1c is curved and further expanded outward.

In FIGS. 1 and 2, reference numeral 2 denotes a base floor made of a concrete floor. The base member 3 includes a base plate 4 fixed on the base floor 2 with an adhesive or the like, and a tubular member 5 fixed to the base plate 4 and rising vertically from the base plate 4. I have. The upper end side of the tubular member 5 is narrowed to a small diameter portion 5a, and a tapered portion 5c is formed between the small diameter portion 5a and the large diameter portion 5b on the lower end side. On the inner periphery of the small diameter portion 5a,
A female screw portion 5d is provided. The male screw member 6 includes a lower male screw part 6a and an upper male screw part 6b formed above the lower male screw part 6a and coaxial with the lower male screw part 6a and having a smaller diameter than the lower male screw part 6a. A step 6c is formed between the lower male screw portion 6a and the upper male screw portion 6b. A driver fitting groove 6d is provided on the upper end surface of the upper male screw portion 6b. The lower male screw portion 6a
Is screwed into the female screw portion 5d of the tubular member 5 of the base member 3. The lower male screw portion 6a has a cylindrical member 5 attached thereto.
The female screw portion 1d of the steady rest 1 is screwed above the screw portion between the lower male screw portion 6a and the lower male screw portion 6a. A disk-shaped receiving member 7 is provided on the upper male screw portion 6b of the male screw member 6.
It is screwed to the position where it contacts the step 6c. A disk-shaped upper plate 8 is rotatably fitted to the upper male screw portion 6b, and the upper plate 8 is placed on the receiving member 7. It is preferable that the upper plate 8 is made of a material such as plastic which is easy to slide on the receiving member 7. Projections 8a are provided at 90 ° intervals on the outer peripheral portion of the upper surface of the upper plate 8.

The panel holding member 9 has a female screw portion 9a and a panel holding portion 9b. The panel holding portion 9b has a disk shape, and is provided with a cross-shaped hole 9c for fitting with a driver at the center thereof, as shown in FIG.

When the floor panel 10 is supported on the base floor 2, the steady rest 1 is first loosened, and the steady rest 1
The pressing portion 1c is separated from the tapered portion 5c of the tubular member 5, and a screwdriver (not shown) is fitted into a driver fitting groove 6d of the male screw member 6 to rotate the male screw member 6. Thereby, the position of the male screw member 6 in the vertical direction and, consequently, the height of the receiving member 7 are adjusted to an appropriate position. When the steady rest 1 is loosened, the male screw member 6 may swing with respect to the cylindrical member 5 as shown by an arrow A in FIG. However, next, the steady rest 1 is tightened, and the inner surface of the pressing portion 1c of the steady rest 1 is attached to the outer periphery of the tapered portion 5c of the tubular member 5 and the outer periphery of the distal end of the tubular member 5 as shown in FIG. If it is brought into contact, it is possible to prevent the external thread member 6 from swinging with respect to the tubular member 5. And
In this case, the screwing accuracy of the cylindrical member 5 and the male screw member 6 is improved.
Accuracy or increase the rigidity of the small diameter portion 5a of the cylindrical member 5.
No need to do.

Next, the corners of four adjacent floor panels 10 are placed on the upper plate 8. At this time, the projection 8a of the upper plate 8 is fitted into a groove provided at a side end of the floor panel 10. The female screw 9a of the panel holding member 9 is screwed into the upper male screw 6b of the male screw member 6, and the floor panel 10 is pressed by the panel holding portion 9b.
At a desired height on the base floor 2.

FIG. 8 shows another embodiment of the steady rest structure according to the present invention, and FIGS. 9 to 12 show the steady rest body 11 in this embodiment alone. The steady body 11 is
Hex nut part 1 with the same shape as normal hexagon nut
On one end side of 1a, a short tapered cylindrical holding portion 11b having a widened front end side is integrally provided. In FIG. 8, the cylindrical member 5 and the male screw member 6 are the same as those in the embodiment. The lower male screw portion 6a of the male screw member 6 is screwed with a female screw portion 11c provided on a hexagonal nut portion 11a of the steadying member 11, and the inner circumferential surface of the holding portion 11b has a cylindrical shape. The member 5 is tightened until it comes into contact with the outer periphery of the tip.

Also in this embodiment, since the inner periphery of the holding portion 11b of the steady rest 11 is in contact with the outer periphery of the distal end of the cylindrical member 5, the accuracy of screwing the cylindrical member 5 and the male screw member 6 is improved. The relative deflection of the male screw member 6 with respect to the cylindrical member 5 can be prevented without increasing the accuracy or increasing the rigidity of the small diameter portion 5a of the cylindrical member 5.

FIGS. 13 and 14 show still another embodiment of the steady rest according to the present invention. This steady rest 11
Is a holding part 11b of the steady rest 11 shown in FIGS.
Is provided with a notch 11d. In this embodiment, since the holding portion 11b is easily elastically deformed, the deflection of the male screw member 6 with respect to the tubular member 5 can be more effectively prevented.

[0016]

As described above, according to the present invention, at least
Be throttled one end the tubular member is a small diameter portion
The relative deflection of the male screw member screwed to the female screw portion provided on the inner periphery of the small diameter portion with respect to the cylindrical member can be improved, and the screwing accuracy between the cylindrical member and the male screw member can be made high, or the cylindrical member can be formed. of
An excellent effect can be obtained in that the small diameter portion can be prevented at low cost without increasing the rigidity.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of a steadying structure of a male screw member screwed to a tubular member according to the present invention.

FIG. 2 is a plan view showing the embodiment.

FIG. 3 is a front view showing the steady rest according to the embodiment.

FIG. 4 is a side view showing the steady rest according to the embodiment.

FIG. 5 is a plan view showing a steady rest according to the embodiment.

FIG. 6 is a bottom view showing the steady rest according to the embodiment.

FIG. 7 is a sectional view taken along line VII-VII in FIG. 5;

FIG. 8 is a longitudinal sectional view showing another embodiment of the present invention.

FIG. 9 is a front view showing the steady rest according to the embodiment.

FIG. 10 is a plan view showing the steady rest according to the embodiment.

FIG. 11 is a bottom view showing the steady rest according to the embodiment.

FIG. 12 is a sectional view taken along line XII-XII in FIG. 10;

FIG. 13 is a front view showing still another embodiment of the steady rest according to the present invention.

FIG. 14 is a bottom view showing the steady rest.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Steady-stop body 1c Holding part 5 Cylindrical member 5a Small diameter part 5d Female screw part 6 Male screw member 11 Steady-stop body 11b Holding part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F16B 39/12 F16B 7/18 F16B 37/00

Claims (2)

(57) [Claims] At least one end is narrowed to form a small diameter portion.
A cylindrical member, threadedly of a female screw portion provided on the inner periphery of the small diameter portion of the tubular member, and the male screw member screwed into the female screw portion, and the internal thread portion of said male screw member Combination
A steadying body screwed in the vicinity of the portion, and the steadying body is disposed so as to surround the axis of the steadying body, and the steadying body is rotated in a tightening direction with respect to the male screw member. And a pressing portion having an inner surface abutting against an outer peripheral side of the cylindrical member. The anti-sway structure of a male screw member screwed to the cylindrical member. 2. The pressing part is divided into a plurality of parts.
The inner surface of each of the plurality of portions is
2. The material according to claim 1, wherein the material is in contact with an outer peripheral side of the material.
The steady rest structure of the male screw member screwed into the cylindrical member.