CN209943313U

CN209943313U - Outer hexagonal nut

Info

Publication number: CN209943313U
Application number: CN201920689730.5U
Authority: CN
Inventors: 陈木火; 陈建荣
Original assignee: Ruian Shengsheng Fasteners Co Ltd
Current assignee: Ruian Shengsheng Fasteners Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-01-14
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses an outer hexagon nut has outer hexagon, and the inside of outer hexagon sets up the internal thread hole, its characterized in that: the bottom of the internal thread hole is provided with a section of unthreaded hole at the opening, the aperture of the unthreaded hole is equal to or slightly larger than the major diameter of the internal thread hole, and the slightly larger size is less than 0.6 mm. The utility model discloses can conveniently realize more aligning with coupling bolt's screw thread and connect soon, the practicality is strong, improves assembly efficiency.

Description

Outer hexagonal nut

Technical Field

The utility model relates to a fastener product, concretely relates to outer hexagon nut.

Background

Outer hexagon nut is most common in the fastener product, however, the outer hexagon nut who uses at present, although internal thread hole opening at the nut has the chamfer, in order to make things convenient for the screw thread alignment with the attachment bolt to connect soon, but often can meet such circumstances, because the opening screw thread in internal thread hole is in nut production, easily receive external force collision deformation in transportation and the assembling process, screw head screw thread including the attachment bolt is impaired, it has the difficulty to all to make the screw thread alignment of nut and attachment bolt connect soon, often just begin to twist into, and just begin to connect soon and incline easily and be difficult to perceive, the nut just can not twist into after the certain angle of rotating, need withdraw and heavily twist, both destroy the screw thread and waste time, influence assembly efficiency.

Disclosure of Invention

In view of the problems existing in the prior art, the to-be-solved technical problem of the present invention is to provide an outer hexagon nut which can be aligned and screwed with the screw thread of the coupling bolt more conveniently, has strong practicability and improves the assembling efficiency.

The utility model discloses a through following technical scheme implementation:

outer hexagon nut has outer hexagon, and the inside of outer hexagon sets up internal thread hole, its characterized in that: the bottom of the internal thread hole is provided with a section of unthreaded hole at the opening, the aperture of the unthreaded hole is equal to or slightly larger than the major diameter of the internal thread hole, and the slightly larger size is less than 0.6 mm.

The length distance of the unthreaded hole is 2-4 times of the thread pitch of the internal threaded hole.

The key of the outer hexagonal nut in the technical scheme is the improvement of the opening at the bottom of the inner threaded hole, so that the opening at the bottom of the inner threaded hole is provided with a section of unthreaded hole, thus, firstly, the opening of the internal thread hole is protected from being collided and deformed by external force, and more importantly, because the aperture of the unthreaded hole is equal to or slightly larger than the major diameter of the internal thread hole, namely slightly larger than the outer diameter of the screw rod of the connecting bolt, therefore, when the internal thread hole of the nut is close to the head of the screw rod of the connecting bolt, the unthreaded hole can actually perform center positioning on the head of the screw rod of the connecting bolt, which is equivalent to the fact that the internal thread hole of the nut and the external thread of the screw rod of the connecting bolt are centered and aligned, so that the alignment and the screwing of the nut and the connecting bolt are basically free from problems, and the problem of deflection can not occur any more, so that the alignment can be realized, the screw thread screwing can be carried out, the practicability is high, and the assembly efficiency is greatly improved.

Drawings

The utility model discloses there is following figure:

FIG. 1 is a half-section structure view of the present invention,

fig. 2 is a bottom view of fig. 1.

Detailed Description

The details and the working principle of the embodiments of the present invention are described in detail below with reference to the accompanying drawings:

as shown in the figure, the utility model discloses an outer hexagon nut has outer hexagon body 1, and the inside of outer hexagon body 1 sets up internal thread hole 2, the bottom in internal thread hole 2 is equipped with one section unthreaded hole 3 at the opening part, and the aperture of this unthreaded hole 3 equals or slightly is greater than the big footpath of internal thread hole 2, and the size that slightly is greater than is less than 0.6mm, the length distance of unthreaded hole 3 is the pitch of 2-4 times internal thread hole 2.

Claims

1. Outer hexagon nut has outer hexagon, and the inside of outer hexagon sets up internal thread hole, its characterized in that: the bottom of the internal thread hole is provided with a section of unthreaded hole at the opening, the aperture of the unthreaded hole is equal to or slightly larger than the major diameter of the internal thread hole, and the slightly larger size is less than 0.6 mm.

2. The external hex nut of claim 1, wherein: the length distance of the unthreaded hole is 2-4 times of the thread pitch of the internal threaded hole.