JPH04126011U - Easy to put on and take off nuts - Google Patents

Abstract

(57) [Summary] [Purpose] To improve work efficiency by allowing nuts to be easily attached and detached from bolts, and tightening and loosening operations can be performed by simply turning the nut a little. [Structure] A through hole 5 is provided which has an opening axis that intersects the axis of the female screw hole 2 of the nut 1 and has an inner diameter into which the bolt 7 can be inserted, and the female screw hole 2 is provided outside the area occupied by the through hole 5.
A remaining female threaded portion 6 is left, and the bolt 7 is screwed using this remaining female threaded portion 6. [Effect] It is easier to attach and detach the nut to the bolt, and the number of times the nut needs to be turned is reduced, reducing work time.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a nut that is paired with a bolt or the like to fix a member, and in particular This invention relates to a nut that can be easily attached to and removed from a bolt.

0002

[Conventional technology]

Conventionally, nuts generally have female threads passing through them in the axial direction.

0003 Therefore, when screwing onto a long bolt, etc., screw the nut from the tip of the bolt. This requires a lot of work until tightening after inserting, which reduces work efficiency. and For example, when constructing temporary concrete frames at a construction site, the concrete pouring space must be A large number of bolts are inserted through the pair of temporary frame boards to be constructed, and these are screwed together to tighten the temporary frame boards. Since a large number of nuts are used, handling such nuts requires a considerable amount of time. become longer.

0004

[Problem that the idea aims to solve]

The problem to be solved with this invention is that nuts can be easily attached and detached from bolts, etc., and tightened easily. Raising and loosening work can be done with just a slight turn of the nut, improving work efficiency. There are many things.

[0005]

[Means to solve the problem]

The present invention has an opening axis that intersects the axis of the female screw hole of the nut, and A through hole is formed with an inner diameter that allows the bolt to be inserted into the nut. The opening area opened on both sides is large enough to cover the female screw hole, leaving a part of the female screw hole. It is characterized by having a

[0006]

[Effect]

When screwing a nut onto a long bolt, etc., hold the nut diagonally and insert it into the through hole. Insert the bolt into the female threaded hole with the nut in its normal position near the base of the bolt. Screw the part onto the bolt and tighten it by turning it a few times. This allows the This reduces the amount of work required to tighten the nut even if the bolt is long. It will be done.

[0007]

【Example】

FIG. 1 is a plan view showing an embodiment of the nut of the present invention, and FIG. FIG.

[0008] In the figure, the nut 1 has a female thread 2 cut in the axial direction like a normal product. I'm letting it pass. Then, the axis 4 intersects with the axis 3 of this female screw 2, and it penetrates. Hole 5 is opened. The inner diameter of this through hole 5 is the same as that of the other bolt into which the nut 1 is screwed. Make it slightly larger than the outside diameter so that the bolt can be easily inserted in the 4 axis directions. do. In addition, the inner diameter is such that the entire female thread 2 does not disappear when the through hole 5 is opened. As shown in Figure 2, it is necessary to The remaining threaded portion 6 of the female thread 2 is formed on the inner periphery. and through hole The inclination of 5 with respect to the female thread 2 takes into consideration the tightening force of the remaining threaded portion 6, the thickness of the nut 1, etc. to obtain the appropriate tilt.

[0009] FIG. 3 is a schematic diagram for explaining how to fasten the nut 1 to a long bolt 7, etc. Ru.

0010 First, as shown in FIG. On the other hand, the attitude of the nut 1 is determined so that the axis 4 of the through hole 5 of the nut 1 is almost parallel. Melt. Then, as shown in (b) of the same figure, fit the through hole 5 into the bolt 7. and then move the nut 1 close to its tightening position. Then, Na Gradually change the posture of bolt 1 so that its axis coincides with the axis of bolt 7. change the momentum. When changing this position, start turning nut 1 and tighten the male screw of bolt 7. The remaining threaded portions 6 are gradually engaged with each other. Then check this engagement Then, tighten the nut 1 with a tool as shown in (c) in the same figure, facing the tightening surface. and then fully tighten.

[0011] In this way, even if the bolt 7 is long, the through hole 5 is closed until the part where the nut 1 is fully tightened. Since the bolt 7 is simply inserted into the hole, there is no need to turn the nut 1 while working. stomach. Therefore, all you have to do is move nut 1 to its tightening surface and then tighten it. This will significantly shorten the time it takes to tighten.

0012 In addition, according to the nut 1 of the present invention, the fastening force is about 1/3 of that of a normal nut. However, there will be no problem with the construction of formwork and other temporary frames at construction sites.

[0013]

[Effect of the idea]

In this invention, when fastening the nut to the bolt, the bolt is inserted into the through hole drilled in the nut. Once the bolt is inserted, the nut can move freely along the bolt and is close to the tightening surface. It is only necessary to screw them together only when they are completely worn out. For this reason, even if the bolt is long, the nut It can be set immediately on the tightening surface, reducing the time it takes to tighten the nut. This greatly improves business efficiency.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the nut of the present invention.

FIG. 2 is a longitudinal cross-sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic diagram showing in order how to set a nut on a bolt and tighten it.

[Explanation of symbols]

1 nut 2 female screw 3 Axis 4 axis 5 Through hole 6 Remaining screw part 7 bolts

Claims (1)

[Scope of utility model registration request] 1. A through hole is formed, the through hole having an opening axis that intersects with the axis of the female threaded hole of the nut and having an inner diameter into which a bolt to be screwed into the nut can be inserted, and the through hole is open on both sides of the nut. A nut that is easy to attach and detach, characterized in that the opening area has a size that covers the female screw hole, leaving a part of the female screw hole.