JPH04109218U - Tightening bolts on both sides - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To provide a double-sided tightening bolt that can be tightened on both sides of a wall, etc. from one side by penetrating and threading an internal bolt with a hook into the bolt. It is something. [Structure] A bolt 1 and a nut 2 for fixing a member to a wall surface include a bolt that is provided with an internal bolt hole 6 that penetrates in the length direction at a position near the circumference of the bolt, and a bolt that is inserted into the internal bolt hole. It consists of an internal bolt 3 that is screwed together and has a hook 7 with one end bent at right angles, and the nut 4 that is screwed onto the bolt and the hook of the internal bolt connect the front and back sides of the wall. It is secured by tightening from both sides.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a tightening bolt for fixing a member on one side of a wall, etc. Ru.

0002

[Conventional technology]

Conventionally, this type of idea used adhesive bonding when fixing a member on one side of a wall, etc. , fixation with nails or welding are known. Also, bolts and nuts In the case of fixed installation by tightening the then tighten the bolts and nuts from the back side of the wall to secure the parts, and after fixing, It is known to block the guard hole.

0003

[Problem that the idea aims to solve]

As mentioned in the conventional technology, in the former case, bonding with adhesive and fixing with nails are possible. When bonded or welded, the component cannot be easily removed from the wall, and maintenance holes are For items that are opened in the wall and fixed by tightening bolts and nuts, The maintenance hole must be opened and closed every time it is removed, which saves time and extra work. The problem was that it took a long time.

0004 This invention was made in view of such problems with the conventional technology. The purpose of this is to make it easy to attach and remove components to and from the wall, and to The purpose is to provide a double-sided tightening bolt that can be tightened from the sides.

[0006]

[Means to solve the problem]

In order to achieve the above purpose, the double-sided tightening bolt in this invention is attached to the wall surface. For the bolts and nuts that fix the A bolt that has an internal bolt hole that penetrates in the opposite direction, and a bolt that is inserted into the internal bolt hole and screwed together. , and an internal bolt having a hook portion bent at a right angle at one end. The bent length of the bolt hook is equal to or less than the diameter of the bolt, and the internal bolt is The circumference of the shortest distance of the bolt when it is inserted into the internal bolt hole and rotated. A nut having a protruding end and screwed onto the bolt, and a hook portion of the internal bolt. It is secured by tightening from both sides of the wall, front and back.

[0007]

[Effect]

The hook part of the internal bolt is used when tightening the bolt to secure it to the wall. If you rotate the internal bolt inserted into the bolt and make it protrude from the circumference of the bolt, It hooks onto the wall surface and can be tightened from the back side of the wall surface. The bent length of the hook of the internal bolt shall be less than or equal to the diameter of the bolt to be inserted. Since the tip of the hook is located within the circumference of the bolt, the inside of the bolt is The bolt can be inserted into the bolt hole with the bolt attached. The internal bolt hole is provided near the circumference of the bolt, so the internal bolt hole is located near the circumference of the bolt. When the bolt is inserted and rotated, the tip of the hook will be positioned within the circumference of the bolt and You can select the position where the bolt circumference protrudes.

[0008]

【Example】

To explain the embodiment using the drawings, as shown in Fig. 1, the bolt 1 has a An internal bolt hole 6 is provided near the circumference and penetrates in the length direction. 3. One end of the internal bolt 3 has a hook portion 7 bent at a right angle. , the bending length of the hook portion 7 is equal to or less than the diameter of the bolt 1, and When the installation bolt 3 is inserted and rotated, the shortest circumferential part of the bolt 1 will protrude. It is the length. Tighten the internal bolt 3 with a nut 4. Also, bolt 1 and internal bolt A stopper 5 is provided to penetrate the side surface of the head of the bolt 3 and fix it.

[0009] In this embodiment, when the member 9 is fixed to the wall 8, the bolt hole between the wall 8 and the member 9 is 10, the bolt 1 is inserted and screwed together in the state shown in FIG. That is, Insert the internal bolt 3 into the internal bolt hole 6 of the bolt 1 so that the hook part 7 is aligned with the circumference of the bolt 1. The parts are inserted into the bolt holes 10 of the wall 8 and the member 9 so that they do not protrude, and are screwed together.

0010 Next, as shown in Figure 3, rotate the internal bolt 3 and pull the hook 7 to the back side of the wall 8. In the hanging state, tighten the nut 4 from the front side of the wall 8 to fix the member 9 to the wall 8. do.

[0011]

[Effect of the idea]

Since this invention is configured as described above, it produces the effects described below. This idea penetrates the internal bolt and screws it into the bolt, so it can be attached to one side of the wall etc. It can be tightened from both sides, there is no need to drill maintenance holes in the wall, and it can be tightened from the back side of the wall etc. Space can be used effectively without requiring space for people to enter through maintenance holes. , the work of attaching and removing members to walls, etc. becomes easier, and the work time can be shortened.

[Brief explanation of drawings]

FIG. 1 schematically shows a side view of an embodiment of the invention.

FIG. 2 schematically shows a side view of an embodiment of the invention when inserting a bolt;

FIG. 3 schematically shows a side view of the embodiment of the invention during bolt tightening.

[Explanation of symbols]

1 volt 2 nuts 3 Internal bolt 4 Nut 5 Stopper 6 Internal bolt hole 7 Hook part 8 Wall 9 Components 10 bolt hole

Claims (1)

[Scope of utility model registration request] Claim 1: In a bolt and nut for fixing a member to a wall surface, the bolt is provided with a bolt at a position near the circumference of the bolt,
An internal bolt hole penetrating in the length direction is provided, an internal bolt is inserted into the internal bolt hole and screwed together, and an internal bolt having a hook portion bent at a right angle at one end is provided. The bending length of the hook of the installed bolt is equal to or less than the diameter of the bolt, and when the internal bolt is inserted into the internal bolt hole of the bolt and rotated, the shortest distance circle of the bolt is determined. A double-sided tightening bolt having a length with a protruding circumferential end, and characterized in that it is fixed by tightening from both the front and back sides of a wall using a nut screwed onto the bolt and a hook of the internal bolt. .