JPH04105619U - Nuts for long bolts - Google Patents

Abstract

(57) [Summary] [Configuration] Main body 1 with a screw escape hole and a tapered part on the inner surface
The rotating piece 2, which has a tapered surface that can be rotated and slid on the tapered part and has a screw hole formed therein, is fitted into the tapered part, and by pushing down the main body 1, the rotating piece 2 is rotated by the remaining pressing force of the bamboo shoot spring 4. while moving along the threaded portion of the long bolt 6. [Effect] It is not necessary to rotate the main body 1 in a narrow hole, and the tightening work can be done quickly by simply pushing the main body 1 downward.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is useful when connecting a member with a deep relief hole for the bolt head to another member. This invention relates to nuts for long bolts used for.

0002

[Conventional technology]

Conventionally, parts with deep relief holes for bolt heads are connected to other parts. In some cases, long bolts with long threads are used. In such cases, Do not use adjustable wrenches or spanners when tightening the bolts. For this reason, the As an attachment tool, for example, one end of a long pipe is formed into a hexagonal hole, and the other end is I've been using a special wrench with a handle that intersects the pipe at right angles.

0003 When tightening parts using this special wrench, first tighten the long bolts. Pass the long bolt through the hole in the material, prevent the bolt head from rotating, and insert the long bolt in the deep hole on the other side. Screw the nut into the threaded part of the bolt, and then insert the nut into the hexagonal hole of the special wrench. Insert the text. Next, grasp the handle of the special wrench, rotate the special wrench, and tighten the nut. Insert the screw into the same part and tighten.

0004

[Problem that the idea aims to solve]

However, with conventional nuts, it is difficult for the nut to reach the seating surface of a member with a deep hole. However, the disadvantage is that the special wrench must be rotated many times, making it inefficient.

[0005] The purpose of the present invention is to solve this problem by using a long material that can be tightened efficiently. To provide nuts for bolts.

[0006]

[Means to solve the problem]

The nut for long bolts of this invention has a thread formed on the inside that matches the thread of the long bolt. A trapezoidal cylindrical rotary piece with a tapered outer periphery and a It has a tapered inner surface that slides on a tapered part around the outer periphery of the rolling piece, and the long bolt passes through it. a main body in which a relief hole is formed, and a main body that is inserted into the main body and connected to the rotating piece; A bamboo shoot spring that applies a pressing force and a bamboo spring that is in contact with the end surface of the rotating piece and that is suspended from the main body. and a washer that is attached via a spring.

[0007]

【Example】

Next, the present invention will be explained with reference to the drawings.

[0008] Figures 1 (a) and (b) are cross sections of a long bolt nut showing an embodiment of the present invention. 2 are top views showing the main body of FIG. 1. This long bolt nut is shown in Figure 1. As shown, a thread that fits the thread of the long bolt 6 is formed on the inside, and the outer periphery is The rotating piece 2 is formed into a tapered shape, and the rotating piece 2 slides on a tapered part around the outer periphery of the rotating piece 2. a main body 1 having a tapered inner surface and having an escape hole through which a long bolt 6 passes; a bamboo shoot spring 4 that is inserted into the main body 1 and applies a pressing force to the rotating piece 2; It is in contact with the end surface of the rotating piece 2 and is attached to the main body 1 via a suspension spring 5. It consists of a washer 3. Also, on the top of the main body 1, as shown in Figure 2, , the L-shaped groove 8 and a notch 8a are formed in a part of the L-shaped groove 8.

[0009] Next, the procedure for tightening this long bolt nut will be explained. Figure 3 shows the long bolt nut. FIG. First, as shown in Figure 1(a), the escape hole for the screw is The members having the holes formed thereon are brought into contact with each other, and the positions of the holes are aligned with each other. Next, the long bolt 6 into the hole, align the thread of the rotating piece 2 with the thread of the long bolt 6, and tighten the screw one pin. Grind your teeth to a certain degree. Next, the notch 8a of the main body 1 shown in FIG. 2 and the tool 7 of FIG. Insert the arrow tip of the tool 7 into the L-shaped groove 8 of the main body 1, aligning it with the protrusion 7a of the tool 90. Rotate degrees. Next, the tool 7 is pushed down as shown in FIG. 1(a). this As a result, the two members are tightened as shown in FIG. 1(b).

0010 This tightening operation is rotated by the pressing force of the main body 1 and the bamboo shoot spring 4 as the tool 7 descends. This is because the rolling piece 2 rotates and descends along the threaded portion of the long bolt 6. i.e. This is because the rotating piece 2 rotates by sliding on the tapered part of the outer periphery and the surface of the washer 3. Ru. Conversely, to tighten this long bolt nut, lift the main body 1 with the tool 7. When the rotary piece 2 is rotated by the washer 3, the rotary piece 2 is rotated by the long bolt. 6.

[0011] In addition, in this embodiment, the tapered part, which is the sliding surface, and the surface between the main body 1 and the washer 3 are , we have explained using normal surface contact, but if a ball contact mechanism is provided, tightening can be done more smoothly. It is possible to perform tightening and tightening operations.

0012

[Effect of the idea]

As explained above, the present invention has a taper that is fitted into the main body and can rotate and slide. A rotating piece with a surface is provided, and the rotating piece is not rotated by the force that pushes the main body in one direction. It can be moved along the thread of a long bolt. Therefore, tighten by turning the tool. An efficient long bolt that allows you to tighten by simply pushing the main body with a tool. This has the effect of providing nuts for bolts.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a long bolt nut according to an embodiment of the present invention.

FIG. 2 is a top view of the main body of FIG. 1;

FIG. 3 is a plan view showing one end side of the tool.

[Explanation of symbols]

1 Main body 2 Rotating piece 3 Washer 4 Bamboo shoot spring 5 Hanging spring 6 Long bolt 7 Tools

Claims (1)

[Scope of utility model registration request] [Claim 1] A trapezoidal cylindrical rotating piece having a thread formed on the inside that matches the thread of a long bolt and having a tapered outer periphery, and a rotating piece that slides on the tapered portion on the outer periphery of the rotating piece. a main body having a tapered inner surface and in which an escape hole is formed through which the long bolt passes; a bamboo shoot spring inserted into the main body and applying a pressing force to the rotating piece; and a bamboo spring that is in contact with an end surface of the rotating piece and A nut for a long bolt, comprising a washer attached to the main body via a suspension spring.