JP2574270Y2 - Nut with coil spring - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fasteners such as bolts for drawing wooden building members such as pillars and vertical frames to each other, and more particularly to nuts fastened via coil springs or steel springs. It is.

[0002]

2. Description of the Related Art A metal fastener 13 is wound around a conventional fastener for fastening a hexagon bolt 11 as shown in FIG. 6 with a hexagon nut 12, or a support member 14 as shown in FIG. The one that is pressed between the plates 15 and 15 and screwed 16 is often used.

In this conventional method, in a fastening nut, both members are firmly fastened at the time of fastening. However, if the nut has been used for many years, the nut will loosen and the fastening portion will be loosened, causing damage and the like. Such a method using an ammunition not only complicates the attaching / detaching process but also increases the mounting cost, and has a problem in terms of construction cost.

[0004]

There is a problem to be solved by the present invention in solving such a conventional problem. That is, the problem to be solved by the present invention is to eliminate the disadvantages of both the conventional nut type and the spring type so as to adopt only the advantages, and to provide the conventional nut head (hexagon type) with an elastic material. To fix directly,
To tighten the nuts with bolts (hexagonal) so that the members can be fastened to each other.

[0005]

SUMMARY OF THE INVENTION The present invention has been developed to solve the above-mentioned problem, and a spring washer for preventing loosening is attached to a head of a bolt or an upper surface of a nut to be screwed with the head. A nut body 1 with a coil spring having a holding plate 3 fixed to one end surface of the nut 2 and a coil spring 4 integrally formed on the holding plate 3 is provided. A nut with a coil spring, wherein a bolt 5 is inserted through a bolt hole 7a of a square washer 6a, and the holding plate 3 of the nut 2 and the square washer 6a are elastically provided via the coil spring 4. On offer. In other words, the means for solving the problem of the present invention is that the conventional bolt nut with slack prevention is improved to integrally form the nut head and the coil spring.

[0006]

[Function] (1) A metal fitting for connecting wooden building members to each other, wherein a metal material is attached to a nut which is pulled toward each other via a metal holding plate and tightened. In addition to being able to always be elastically attached, there is no gap between the two members even if they have been used for many years, so that they can always be fixed in an elastic pressure state.

(2) Since the elastic member is constituted by a coil spring, the coil spring is directly fixed to the head of the nut. Therefore, since the nut and the coil spring are integrally formed, it is possible to provide a fastener that is stronger than a conventional nut.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a fastening nut of the present invention, and 1 is a nut body with a coil spring. This nut body 1 with a coil spring is a conventional hexagonal nut 2
A coil spring 4 is fixed to the head portion via a holding plate 3. That is, the nut body 1 with the coil spring of the present invention
The nut 2 and the coil spring 4 are formed in an integrated state.

FIGS. 2-13 to 5 show the use state of the present invention. First, as shown in FIG. 2, a square washer 6a is inserted into a conventional hexagonal bolt 5 through bolt holes 7a and 7b.
6b is inserted and the other end is fastened by the nut body 1 with a coil spring. Then, the coil spring 4 is sandwiched between the square washer 6a and the holding plate 3 as shown in FIG.

If the building member (not shown) between 6b is pressed as shown in FIG. 4 for a long time in this state, the square washer 6a is pressed by the coil spring 4 even if the building member (not shown) is pressed.
The building member will always be pressed.

FIG. 6 shows an embodiment in which the nut body 1 with a coil spring of the present invention is used to fix and hold the column A and the floor beam 13.

[0012]

[Effects of the Invention] Since the present invention is configured as described above, it has many effects as follows.

(1) Since the head portion of the nut and the coil spring are formed so as to be integrated, the structure is simpler than that of a conventional spring-type nut, and the handling is simpler.

(1) Since the nut and the spring are integrated, the building member can be constantly pressed and fixed. (C) Since molding can be performed, mass production processing can be performed at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a nut body with a coil spring according to the present invention.

FIG. 2 is an explanatory schematic diagram showing a use state of the nut body with a coil spring shown in FIG. 1;

FIG. 3 is an enlarged explanatory view showing an operation of a coil spring which is a main part of the present invention.

FIG. 4 is an operation explanatory view of a main part shown in FIG. 3;

FIG. 5 is a schematic explanatory view showing an embodiment of the present invention.

FIG. 6 is a perspective view showing a conventional bolt and nut of the present invention.

FIG. 7 is a partially enlarged explanatory view showing the conventional fastening fitting with a metal spring of the present invention.

[Explanation of symbols]

Reference Signs List 1 nut body with coil spring 2 nut 3 holding plate 4 coil spring 6a, 6b square washer 7a, 7b bolt hole A pillar B floor beam 11 hexagon bolt 12 hexagon nut 13 metal spring 14 support member 15 fixing plate 16 screw fixing

Claims (1)

(57) [Scope of request for utility model registration] 1. A bolt nut comprising a bolt head or an upper surface of a nut for screwing the bolt with a spring washer for preventing loosening, wherein a holding plate 3 is fixed to one end surface of the nut 2, and the holding plate is fixed. 3, a nut body 1 with a coil spring formed integrally with a coil spring 4 is provided, and a bolt 5 is inserted into the nut body 1 with a coil spring via a bolt hole 7a of a square washer 6a. A nut with a coil spring, wherein a holding plate 3 of a nut 2 and a square washer 6a are elastically provided.