CN209943312U - Round sealing nut - Google Patents

Abstract

The utility model discloses a circle gland nut, including outer cylinder, the inside of outer cylinder sets up the axial hole, its characterized in that: the upper section of the axial hole is an inner hexagonal hole, the middle lower section of the axial hole is an inner threaded hole, the inner hexagonal hole and the inner threaded hole are not communicated, and the outer cylindrical surface of the outer cylinder is provided with a sealing groove for placing an O-shaped sealing ring; the bottom opening of the internal thread hole is connected with a section of unthreaded hole, and the aperture of the unthreaded hole is equal to the major diameter of the internal thread hole. The utility model discloses be applied to the counter bore installation, can seal the protection to counter bore and nut and coupling bolt's threaded connection pair, make things convenient for simultaneously and connect soon with coupling bolt's screw thread alignment, raise the efficiency to processing is convenient.

Description

Round sealing nut

Technical Field

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

Background

The round nut is generally applied to the installation of the counter bore and is fastened and connected with the connecting bolt in the counter bore. At present, the operation of hexagonal cap in order to make things convenient for the spanner is all taken to the top to the round nut, but does not have outer hexagonal spanner or under the not enough condition in outer hexagonal spanner operating space, the round nut hardly obtains using. In addition, after the round nut is fastened and connected with the connecting bolt in the counter bore, the counter bore and the threaded connection pair of the nut and the connecting bolt cannot be protected in a sealing way, and a cover cap needs to be additionally arranged outside the counter bore in the outdoor environment. Still, the internal thread hole opening of round nut generally has the chamfer to make things convenient for the screw thread alignment with the coupling bolt to connect soon, but the condition that actually meets is, because the opening screw thread in internal thread hole easily receives external force collision deformation in round nut production, transportation and assembling process, including the screw head screw thread of coupling bolt is impaired, all can make the screw thread alignment of round nut and coupling bolt connect soon to have the difficulty, and just begin to connect soon the easy incline of inclining to be difficult to perceive, the nut often just can not twist into after the certain angle of rotation, need withdraw and twist again, both lost time reduces work efficiency again.

Disclosure of Invention

In view of the problems existing in the prior art, the to-be-solved technical problem of the utility model is to provide a be applied to the counter bore installation, can seal the protection to counter bore and nut and coupling bolt's threaded connection pair, make things convenient for simultaneously to aim at with coupling bolt's screw thread and connect soon, raise the efficiency to process convenient round gland nut.

The utility model discloses a through following technical scheme implementation:

circle gland nut, including outer cylinder, the inside of outer cylinder sets up axial hole, its characterized in that: the upper section of the axial hole is an inner hexagonal hole, the middle lower section of the axial hole is an inner threaded hole, the inner hexagonal hole and the inner threaded hole are not communicated, and the outer cylindrical surface of the outer cylinder is provided with a sealing groove for placing an O-shaped sealing ring; the bottom opening of the internal thread hole is connected with a section of unthreaded hole, and the aperture of the unthreaded hole is equal to the major diameter of the internal thread hole.

The seal groove is provided with an upper seal groove and a lower seal groove.

According to the circular sealing nut in the technical scheme, the upper section of the axial hole is the hexagon socket, and the hexagon socket is not communicated with the internal thread hole, so that the nut is screwed with the connecting bolt to achieve the sealing effect on the connecting thread pair, and can be pulled by using the hexagon socket wrench to expand the application range. In addition, the outer circle surface of the outer cylinder is provided with a sealing groove for placing an O-shaped sealing ring, so that after the round nut is fastened and connected with the connecting bolt in the counter bore, the outer circle of the O-shaped sealing ring is in sealing contact with the wall of the counter bore, the sealing protection effect on the counter bore is achieved, and in fact, the sealing protection on the bottom end face of the counter bore, namely the fastening end face, is achieved. The bottom opening of the internal thread hole is connected with a section of unthreaded hole, and the internal thread hole equivalent to the nut is internally processed, so that the opening of the internal thread hole is protected from being collided and deformed by external force, more importantly, the aperture of the unthreaded hole is equal to the major diameter of the internal thread hole, namely slightly larger than the outer diameter of a screw rod of the connecting bolt, when the internal thread hole of the nut is close to the head part of the screw rod of the connecting bolt, the unthreaded hole can actually perform central positioning on the head part of the screw rod of the connecting bolt, and the internal thread hole equivalent to the nut and the external screw 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 basically have no problem, the deflection problem can not occur any more, and the screwing.

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 top view in the direction 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 figures, the round sealing nut of the utility model comprises an outer cylinder 3, an axial hole is arranged inside the outer cylinder 3, the upper section of the axial hole is an inner hexagonal hole 1, the middle lower section of the axial hole is an inner threaded hole 4, the inner hexagonal hole 1 and the inner threaded hole 4 are not communicated with each other, and the outer cylindrical surface of the outer cylinder 3 is provided with an upper sealing groove 2 and a lower sealing groove 2 for placing an O-shaped sealing ring; the bottom opening of the internal thread hole 4 is connected with a section of unthreaded hole 5, and the aperture of the unthreaded hole 5 is equal to the major diameter of the internal thread hole 4.

Claims (3)

1. Circle gland nut, including outer cylinder, the inside of outer cylinder sets up axial hole, its characterized in that: the upper segment of axial hole is interior hexagonal hole, and well hypomere is the internal thread hole, and interior hexagonal hole and internal thread hole do not link up each other, and the excircle surface of outer cylinder is equipped with the seal groove that is used for O shape sealing washer to place.

2. The round seal nut of claim 1 wherein: the bottom opening of the internal thread hole is connected with a section of unthreaded hole, and the aperture of the unthreaded hole is equal to the major diameter of the internal thread hole.

3. The round seal nut as claimed in claim 1 or 2, wherein: the seal groove is provided with an upper seal groove and a lower seal groove.

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