JPS5933593Y2 - insert - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an insert in which a bolt can be securely attached and fixed simply by inserting the bolt and pulling it back.

Conventionally known inserts were simply a nut into which a bolt was screwed into a casing that was to be fixed to the substrate, so each bolt had to be rotated each time it was installed, which was time-consuming. In short, it was inconvenient.

However, in order to eliminate the above-mentioned inconvenience, the present invention provides an insert that can be installed in one piece without rotating the bolt when installing the bolt, and only needs to be rotated when adjusting the length of the bolt or removing it. Therefore, the specific structure of the insert of the present invention will be explained below with regard to the illustrated embodiment.

That is, inside a cylindrical synthetic resin casing 1 with a hole 1° wide enough to insert a bolt A at the bottom, a cup-shaped casing 1 with a rib 2 □ that bulges inward near the lower end and which widens upward is provided. At the same time as fitting the cylindrical body 2, a rib 2□ is inserted into the cylindrical body.
Fitting a two-split Nand 3 having an outer diameter larger than the inner diameter and having a concave groove 3 around a part of the outer peripheral surface into which the rib 2 □ fits,
This insert is characterized by an insert structure in which a camp 4 having an inner diameter smaller than the outer diameter of the nut 3 is screwed and fixed to the upper part of the cylindrical body.

In addition, in the figure, 5 and 5 are the upper and lower flanges 1 of the casing 1.
□, 13 are commonly inserted through the holes provided in the base plate, and their heads are hidden by the flange 4 of the camp 4.

14...14 are pleats integral with the casing 1 that are cut radially and protect the base cement from entering the inside of the casing.

Next, in accordance with the above-mentioned structure of the present invention, the specific usage, operation, and effects of the inventive insert will be explained with reference to the illustrated embodiment.

That is, when the tip of the bolt A is inserted into the hole 1 at the bottom of the casing 1 while the insert of the present invention is fixed to the base, the IJ block 2 and the nut 3 placed on it are pushed up, and the camp 4 is pushed up. The nut 3 stops when it comes into contact with the step formed by the edge, but when the bolt A is pushed in further, the inner diameter of the upper part of the cylindrical body 2 is larger than the outer diameter of the nut 3, so the nut 3 tightens the thread of the bolt A. It is pushed by the mountain and separated into left and right parts, and the bolt A is inserted into the threaded hole of the nut 3, resulting in the state shown in Fig. 3.

When the bolt A is pulled back in this state, the thread of the bolt and the thread of the Nand 3 are engaged and the Nand comes down to the point where it comes into contact with the rib 2 □, resulting in the state shown in Figure 4.
When the bolt is pulled back further, the outer periphery of the lower surface of the nut 2 once pushes the rib 2 □ outward, so the nut 3 climbs over the rib 2 □ and descends, causing the nut 3 to fall into the groove 3 provided around the outer periphery of the nut 1. Rib 2 is fitted to □, resulting in the state shown in Figure 5.

In this state, the NAND 3 spreads to the left and right and cannot be separated, so it acts as a single NAND, and when adjusting the length of the bolt or removing it, the bolt must be rotated in the same way as with conventional inserts. Let's do this.

As mentioned above, according to the insert according to the present invention, it can be attached to the NAND by simply inserting it into the bolt casing and pulling it back, so unlike conventional inserts, it is not necessary to rotate the bolt from the beginning. There is no need to attach it, making the work extremely easy, and in the end, the two divided Nandos act as a single Nando, so there is no risk of looseness or large loads. Sometimes there is no risk of dropping out,
Construction can be carried out with peace of mind.

[Brief explanation of drawings]

The drawings illustrate an embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view of the insert of the invention, and FIGS. 2 to 5 are longitudinal sectional side views showing the procedure for installing a bolt using the insert. 1...Casing, 2...Cylindrical body, 3
...Nand's, 4...Cap, 510
0.1. nail.

Claims (1)

[Scope of utility model registration request] A cup-shaped cylindrical body 2 with a rib 21 that bulges inward near the lower end and a cup-shaped cylindrical body 2 that widens upward is fitted into a cylindrical casing 1 that has a hole 1□ large enough to insert a bolt A at the bottom. At the same time, a split nonant 3 having an outer diameter larger than the inner diameter of the rib 21 and having a groove 3 □ in which the rib 2 □ fits in a part of the outer circumferential surface is fitted in the same cylindrical body, and the upper part of the cylindrical body is An insert in which a cap 4 having an inner diameter smaller than the outer diameter of the nand 3 is fitted and fixed.