JP3077991U - Structure of loosening fixing nut for wood products - Google Patents

Abstract

(57) [Summary] [Problem] To provide a structure of a loosening prevention fixing nut for wood products. SOLUTION: A fixing positioning sheet is extended to a peripheral edge of a front end of a fixing nut, an inner front end thereof is formed in a gradually contracting shape toward the front, and finally a tightening block is mounted in the fixing nut. When the fixing nut is fixed in the positioning hole of the wooden board and a bolt is screwed into the female screw at the front stage inside the fixing nut for coupling with another part, the foremost end of the bolt is mounted in the fixing nut. By pressing the block toward the front end of the positioning sheet, and expanding the positioning sheet outward, several locking rings provided annularly around the front edge of the positioning sheet forcibly force the positioning holes. , Whereby the fixing nut is effectively tightened and fixed to the positioning hole to prevent the fixing nut from falling off.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a structure of a locking nut for a wooden product, which is a well-known fixing nut for a wooden product, which is screwed into a positioning hole of a wooden product part and is screwed with a bolt for combining with another part. Another object of the present invention is to improve the disadvantage that the fixing nut is not firmly fixed in the positioning hole, and to effectively fix the whole fixing nut to the positioning hole of the wooden product so as not to loosen and fall off.

[0002]

[Prior art]

 At present, manufacturers have adopted a system in which semi-finished products are manufactured at the time of the first production of articles, and users complete assembly by themselves in order to save product stock and transport space, and to take advantage of the DIY trend. are doing. The assembly of a well-known wood product is shown in FIGS. That is, as shown in FIG. 1, the wooden board 2 is provided with the positioning holes 21 in advance. The fixing nut 3 combined with this has an outer peripheral edge slightly larger than the positioning hole 21, a male screw 31 is formed on the outer peripheral edge, a screw hole is provided inside, and a rear portion of the screw hole is hexagonal. A part 32 is provided, and a female screw 31 is provided at the front part. A manual or pneumatic hexagonal spanner is fitted into the hexagonal portion 322 of the fixing nut 3, and the fixing nut 3 is screwed into the positioning hole 21 of the wooden board 2 with the male screw 31. Further, when the wooden board 2 is connected to another part 4, the bolt 5 is passed through the part 4 and then screwed with a female screw 33 provided at the front inside of the fixing nut 3, so that the two can be fixed. Can be achieved.

The above-mentioned fixing nut 3 can be previously connected to the positioning hole 21 of the wooden board 2 by screwing a male screw 31 provided on the outer peripheral edge into the positioning hole. However, when the wooden board 2 is further joined to another part 4, similarly, the bolt 5 is screwed into the female screw 33 inside the fixing nut 3 by the screw fitting method. When screwing the bolts, the entire fixing nut 3 becomes wobble and sometimes falls off.

[0004]

[Problems to be solved by the invention]

 The main object of the present invention is to provide a kind of structure of a locking nut for wooden products, which is provided with a male screw on an outer peripheral edge of the fixing nut and a rear portion of a screw hole provided therein. A hexagonal hole is provided, a female screw is provided in the front part, the fixing nut is screwed into a positioning hole provided in a wooden product part with a hexagonal spanner and fixed, and another part is attached to the part using the fixing nut. When fixing the fixing nut, the bolt passed through the other part is screwed into the female screw at the front of the screw hole of the fixing nut to fix the joint. The stop positioning sheet is extended, its inner front end is made to gradually contract toward the front, and finally a tension block is installed in the fixing nut.According to the above composition, the fixing nut is inserted into the positioning hole of the wooden product part. And fix it to another When a bolt is screwed into the female screw at the front of the fixing nut for connection with the screw, the foremost end of the bolt presses the tension block mounted in the fixing nut toward the front end of the seat in the fixing position. By expanding the fitting positioning sheet outward, several fitting rings provided in an annular shape around the front edge of the fitting positioning sheet are forcibly inserted into the peripheral wall of the positioning hole, thereby fixing nut. Can be effectively fixed tightly in the positioning hole, thereby achieving the effect of preventing falling off.

[0005] A second object of the present invention is to provide a structure of a locking nut for preventing looseness for wood products, that is, the total length of a bolt to be combined with a female screw provided at the front inside the fixing nut is reduced by the total length of the fixing nut. In a situation where the bolt is screwed into the front part of the fixing nut and advanced forward, the fixing nut is also effectively tightened and fixed to the positioning hole, thereby strengthening the coupling force and preventing the bolt from falling off. Provide an effect.

[0006]

[Means for Solving the Problems]

 According to the invention of claim 1, a male screw is provided on an outer peripheral edge of a fixing nut, a hexagonal hole is provided at a rear portion of a screw hole provided therein, a female screw is provided at a front portion thereof, and the fixing nut is provided with a hexagonal spanner. When fixing another part to the part by screwing it into the positioning hole provided on the wooden board of the wooden product with the fixing nut and using the fixing nut, screw the bolt passed through the other part in front of the screw hole of the fixing nut. In the structure of a wooden product fixing nut that is fixed by screwing it into the female screw of the part, a fitting positioning sheet is extended around the front edge of the fixing nut, and its inner front end is not gradually reduced toward the front Finally, a tension block is installed in the fixing nut, and with the above composition, the fixing nut is fixed in the positioning hole of the wooden board, and a bolt is screwed into the female screw at the front stage inside the fixing nut for coupling with another part. When installing the bolt, The end is fixed. The tension block attached to the nut is pressed toward the front end of the fitting positioning sheet, and the fitting positioning sheet is expanded outward. The locking ring is forcibly inserted into the peripheral wall of the positioning hole, whereby the fixing nut is effectively tightened and fixed to the positioning hole, thereby preventing the nut from falling off. It has a structure. According to the invention of claim 2, the total length of the bolt to be combined with the female screw provided at the front of the screw hole of the fixing nut is made slightly longer than the total length of the fixing nut. 2. The structure according to claim 1, wherein the fixing nut is also effectively tightened and fixed to the positioning hole when installed and moved forward to enhance the binding force and prevent falling off. And

[0007]

[Embodiment of the invention]

 As shown in FIGS. 3, 4, and 5, the fixing nut 3 of the present invention is provided with a male screw 31 at the outer peripheral edge thereof, and a hexagonal hole at the rear of the screw hole provided inside the fixing nut 3. A female screw 33 is provided at the front of the screw hole, and the fixing nut is screwed into a positioning hole 21 previously provided in the wooden board 2 of the wooden product with a hexagonal spanner, and is fixed using the fixing nut 3. When another part 4 is fixed to the wooden board 2, the bolt 5 passed through the other part 4 is screwed into the female screw 33 at the front of the screw hole of the fixing nut 3 to perform the connection and fixing. The structure of the nut is characterized as follows.

A fixing positioning sheet 34 extends around the front end of the fixing nut 3, and an inner front end thereof is formed as a tapered portion 35. At the forefront thereof, several fixing rings 36 are provided in an annular shape. Several grooves 37 are provided in the periphery along the axial direction, and the tightening block 6 is mounted inside the fixed nut 3.

With the above composition, a direct or pneumatic hexagonal wrench is directly fitted into the hexagonal hole 32 provided at the rear part of the fixing nut 3 and the whole fixing nut 3 is provided on the outer peripheral edge thereof. The male screw 31 can be screwed into the positioning hole 21 of the wooden board 2 (see FIG. 4). Further, in order to connect another part 4 to the wooden board 2, when the user passes the bolt 5 through the other part 4 and then screws the bolt 5 into the female screw 33 inside the fixing nut 3 at the front stage. The foremost end of the bolt 5 presses the tensioning block 6 mounted in the fixing nut toward the front end of the fitting positioning sheet 34, and by design of several grooves 37 provided in the fitting positioning sheet 34. The entire positioning sheet 34 is elastically expanded outward, and several locking rings 36 are forcibly provided at the forefront end of the positioning sheet 34 with the positioning holes 21 of the wooden board 2. (See Fig. 5). Thereby, when the whole fixing nut 3 is screwed into the positioning hole 21 of the wooden board 2 and the other part 4 is connected to the wooden board 2, the bolt 5 is inserted into the fixing nut 3 by the screw design. When screwed, the whole fixing nut 3 is firmly fixed in the positioning hole 21, without loosening or falling off, and effectively forming the coupling effect with the positioning hole 21 of the wooden board 2.

[0010]

[Effect of the invention]

 Taken together, the present invention enhances the simpler effect than the well-known structure.Especially, it strengthens the connection between the locking nut for preventing the looseness of the wooden product and the positioning hole provided in the wooden product, and prevents the falling off from occurring. Has been achieved and meets the requirements for utility model registration.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view of a known structure.

FIG. 2 is a combination sectional operation display diagram of a known structure.

FIG. 3 is an exploded three-dimensional sectional view of the structure of the present invention.

FIG. 4 is a cross-sectional view of the structure of the present invention;

FIG. 5 is a view showing a combined sectional operation of the structure of the present invention.

[Explanation of symbols]

2 wooden board 21 positioning hole 3 fixing nut 31 male screw 32 hexagonal hole 33 female screw 34 fitting positioning sheet 35 tapered portion
36 Fitting ring 37 Groove 4 Another part 5 Bolt 6 Tightening block

Claims (2)

[Utility model registration claims] 1. An external thread is provided on an outer peripheral edge of a fixing nut, a hexagonal hole is provided at a rear portion of a screw hole provided therein, and a female screw is provided at a front portion thereof. When fixing another part to the wooden board using the fixing nut by screwing into a positioning hole provided in advance, a female screw at the front of the screw hole of the fixing nut with a bolt passed through the other part. In the structure of the wooden product fixing nut which is fixed by being screwed in, the fitting positioning sheet is extended around the front end periphery of the fixing nut,
With its inner front end facing forward, it is made to be a gradually contracted shape, and finally, a tightening block is installed in the fixed nut, and by the above composition,
When the fixing nut is fixed in the positioning hole of the part of the wooden product and a bolt is screwed into the female screw at the front stage inside the fixing nut for coupling with another part, the foremost end of the bolt is mounted in the fixing nut. By pressing the tension block toward the front end of the positioning sheet, and expanding the positioning sheet outward, several locking rings provided annularly around the front edge of the positioning sheet are forcibly forced. A locking nut for wooden products, wherein the fixing nut is inserted into a peripheral wall of the positioning hole, thereby effectively tightening and fixing the fixing nut to the positioning hole to prevent the fixing nut from falling off. 2. The total length of a bolt to be combined with a female screw provided at a front part of a screw hole of the fixing nut is made slightly longer than the total length of the fixing nut. 2. The structure of claim 1, wherein the fixing nut is also effectively tightened and fixed to the positioning hole to enhance the coupling force and prevent the nut from falling off.