JP3004874B2 - Nut and nut holding member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nut for inserting a nut into a T-groove formed in a structural material, for fixing other components to the structural material, and holding the nut in the T-groove. The present invention relates to a nut holding member.

[0002]

2. Description of the Related Art Conventionally, there are generally two types of mounting nuts in T-grooves. One is a case where at least one end of the T-slot is open, insert a nut of a predetermined size from the open end, slide it to a desired position, and screw a bolt together with other mounting parts. Are to be combined.

Another aspect is a case where both ends of a T-groove are closed and a nut is inserted and fixed directly from an opening on the upper surface of the T-groove. In the latter case, as shown in FIG. 6, a nut 4 insertable from above is held in a T-groove 2 of the structural material 1 by a nut holding member 5 formed by bending a metal piece. The nut 4 is locked at a predetermined position in the inside. At this time, the engaging piece 6 of the nut holding member 5 is
And the nut 4 is fixed in the T groove 2.

[0004]

In the case of the above-mentioned conventional technique, the engaging piece 6 of the nut holding member 5 has an upper portion on the outer surface of the T-shaped groove 2.
That is, the protrusion protrudes from the surface of the structural material 1, and this protruding portion is sandwiched between the component mounted on the structural material 1 and the structural material 1, which causes a reduction in mounting strength and rattling.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and provides a nut and a nut holding member that have no portion protruding from the surface of a structural material and can be securely mounted in a T-groove. The purpose is to:

[0006]

According to the present invention, there is provided a nut which is inserted into a T-groove formed on a side surface of a long structural material and is held at a predetermined position in the T-groove by a nut holding member. a pair of side surfaces facing each other around the internal thread portion of the nut, orthogonal to the longitudinal direction of the T-shaped groove
A mounting portion mounting portion such as a concave portion or a convex portion of the nut holding member is formed on the side surface to be formed, and the nut is elastically urged toward the upper surface of the mounting portion which is axially above the female screw portion by the nut holding member. The part is a nut formed on the lower surface side of the mounting part. Further, a cutout portion is formed along a longitudinal direction of the T groove on a side of the nut where a pair of side surfaces orthogonal to the side surface on which the mounting portion is formed, on a side where the receiving portion is formed.

According to another aspect of the present invention, there is provided a nut holding member for holding a nut to be inserted into a T-shaped groove formed on a side surface of a long structural material at a predetermined position. And a pair of side faces facing each other ,
A mounting portion for the nut holding member is formed on a side surface orthogonal to the longitudinal direction of the T groove, and is elastically urged by the nut holding member toward the mounting portion upper surface, which is axially above the female screw portion. A receiving portion is formed on the lower surface side of the mounting portion, the engaging portion engages with the mounting portion formed on a pair of side surfaces of the nut, and the nut provided on both sides with the engaging portion as a center. An elastic piece that abuts on the receiving portion to urge the nut toward the opening of the T-groove; and a support piece extending from the elastic piece and elastically abutting on the bottom in the T-groove. It is a nut holding member. Further, the elastic pieces are formed in two pairs symmetrically with each other in a substantially rectangular shape.

[0008]

According to the nut and the nut holding member of the present invention, the nut in the T-groove is formed by the support piece and the elastic piece of the nut holding member.
The nut is urged outward from the inside of the T groove via the receiving portion to hold the nut at a desired position in the T groove.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, this embodiment includes a square nut 10 having a female screw portion 11 at the center, and a nut holding member 20 for holding the nut 10. As shown in FIGS. 1 and 3, the nut 10 has a mounting portion 12 formed of a concave portion formed on a pair of side surfaces facing each other around the female screw portion 11 of the nut 10. The receiving portion 1 of the nut holding member 20 has a slope formed at an edge of the concave portion at the lower side.
4 are provided.

As shown in FIGS. 1 and 3, lower portions of a pair of side surfaces orthogonal to the side surface on which the mounting portion 12 of the nut 10 is formed, on the side where the receiving portion is formed, extend in the longitudinal direction of the side surface. A notch 16 is formed along the upper surface, and the upper part thereof is formed in a pair of flanges 17.

As shown in FIG. 2, the nut 10 is inserted into a T-shaped groove 32 formed on a side surface of a long structural material 30. The member 20 is attached. This nut holding member 20 is, as shown in FIGS.
It has a pair of engaging portions 22 that engage with the mounting portion 12 of the nut 10. Further, a U-shaped elastic piece 24 is formed on both sides of the engaging portion 22 so as to contact the receiving portion 14 of the nut 10. The elastic pieces 24 are opposed to each other and formed in two pairs, one on each side. Four support pieces 26 are provided extending from the elastic pieces 24 and elastically abutting on the bottom in the T-shaped groove 32. ing. This support piece 24
As shown in FIG. 4, the support pieces 24 facing each other are located alternately.

As shown in FIG. 4, the nut holding member 20 is formed by punching out spring steel and bending the elastic pieces 24 in a symmetrical shape about the engaging portion 22. is there. Further, the elastic piece 24 may be integrally formed of a synthetic resin.

Next, a method of using the nut 10 and the nut holding member 20 of this embodiment will be described. First, as shown in FIG. 1, the nut holding member 20 is attached to the mounting portion 12 of the nut 10.
The nut 10 is held by the nut holding member 20 in such a manner that the elastic pieces 24 are brought into contact with the receiving portions 14 of the nut 10. Then, as shown in FIG. 5A, one of the flanges 17 of the nut 10 is slanted so as to face downward, and one side surface thereof is inserted from the opening of the T groove 32.

One of the inserted flanges 17 is a T-shaped groove 32.
5B, the other flange portion 17 is also positioned at the opening of the T-groove 32, and pushes the nut 10 and the nut holding member 20 into the T-groove 32 as it is. Then, as shown in FIG. 5C, the notch 16 of the nut 10 contacts the step 32a of the T groove 32. As a result, the nut 10 completely enters the T-groove, and at the same time, the urging force of the elastic piece 24 urges the nut 10 through the receiving portion 14 in a direction to protrude from the opening of the T-groove. . And, as shown in FIG.
It is pressed against the upper edge 32b of the opening of the T groove 32 and locked. At this time, the support piece 26 is at the bottom 32 of the T-shaped groove 32.
c, and supports the nut 10 upwardly against the elastic force of the elastic piece 24.

According to the nut and the nut supporting member of this embodiment, since the nut holding member 20 holding the nut 10 is not exposed to the outside of the T-shaped groove 32, the external member can be securely fixed to the structural member 30. it can.

Incidentally, the nut of the present invention is not limited to the shape of the above embodiment, and the mounting portion may be a convex portion other than the concave portion, or may be a surface with which the nut holding member comes into contact. Further, the nut holding member only needs to have an elastic piece capable of urging the nut toward the opening of the T groove, and the shape of the elastic piece is not limited.

[0017]

The nut and the nut holding member of the present invention are:
There is no protruding part from the surface of the structural material, which is not only favorable in appearance, but also does not cause rattling of external attachments,
Further, the mounting strength and mounting accuracy of the structural material and other parts are increased. Furthermore, even when the nut is inserted, the nut can be easily attached without rattling, and the external member can be attached efficiently.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a nut and a nut holding member according to an embodiment of the present invention are combined.

FIG. 2 is a partially broken perspective view showing a state in which the nut and the nut holding member of this embodiment are combined and attached to a structural material.

FIG. 3 is a plan view (a) and a front view (b) of the nut of this embodiment.

FIG. 4 is a plan view (a) of the nut holding member of this embodiment when punched out, a front view (b) after bending, and a side view (c).

FIG. 5 is a view showing a process of attaching the nut and the nut holding member of the embodiment.

FIG. 6 is a longitudinal sectional view showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Nut 11 Female thread part 12 Attachment part 14 Receiving part 16 Notch part 20 Nut holding member 22 Engagement part 24 Elastic piece 26 Support piece

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16B 37/04 F16B 41/00

Claims (4)

(57) [Claims] 1. A nut inserted into a T-groove formed on a side surface of a long structural material and held at a predetermined position in the T-groove by a nut holding member. A pair of opposing side surfaces , the T groove
A mounting portion for the nut holding member is formed on a side surface orthogonal to the longitudinal direction of the nut, and a receiving portion elastically urged by the nut holding member toward the mounting portion upper surface side, which is axially above the female screw portion, is provided. A nut formed on the lower surface side of the mounting portion. 2. A notch is formed along a longitudinal direction of the T-groove on a side of the nut on which the receiving portion is formed, on a pair of side surfaces orthogonal to a side surface on which the mounting portion is formed. The nut according to claim 1, wherein 3. A nut holding member for holding a nut inserted in a T-groove formed on a side surface of a long structural material at a predetermined position, wherein the nut is opposed to each other around its internal thread. A pair of side surfaces , the length of the T-groove
The mounting portion of the nut holding member is formed on a side surface orthogonal to the direction, and the receiving portion elastically urged by the nut holding member toward the upper surface of the mounting portion, which is axially above the female screw portion, is An engaging portion formed on the lower surface side of the mounting portion and engaging with the mounting portion formed on a pair of side surfaces of the nut, and the receiving portion of the nut provided on both sides with the engaging portion as a center. A nut holding member comprising: an elastic piece that abuts and urges the nut toward the opening of the T-groove; and a support piece that is extended from the elastic piece and elastically abuts the bottom in the T-groove. 4. The nut holding member according to claim 3, wherein said elastic pieces are formed symmetrically with each other and substantially in a V shape.