CN108661999B

CN108661999B - Unilateral bolt fastener

Info

Publication number: CN108661999B
Application number: CN201810818511.2A
Authority: CN
Inventors: 汤建惠
Original assignee: Zhejiang Hathaway Technology Co ltd
Current assignee: Zhejiang Hathaway Technology Co ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2023-07-07
Anticipated expiration: 2038-07-24
Also published as: CN108661999A

Abstract

The invention discloses a unilateral bolt fastener which comprises a screw body, a plurality of sliding grooves, a plurality of sliding bodies, a plurality of blocking bodies, a plurality of magnets and a lining, wherein all the sliding grooves are uniformly distributed on the peripheral surface of the rear end of the screw body in a circumferential shape, the bottom surfaces of the sliding grooves are inclined planes with lower front and higher back, the sliding bodies are arranged in the sliding grooves, the lower end surfaces of the sliding bodies are matched with the bottom surfaces of the sliding grooves, the magnets used for fixing the sliding bodies in the sliding grooves in a sliding manner are inlaid on the lower end surfaces of the sliding bodies, the blocking bodies are arranged on the upper parts of the rear ends of the sliding bodies, the lining is sleeved on the screw body in front of the blocking bodies, and when the front ends of the sliding bodies are contacted with the front ends of the sliding grooves, the upper ends of the blocking bodies exceed the notch of the sliding grooves.

Description

Unilateral bolt fastener

[ field of technology ]

The invention relates to the technical field of unilateral bolt fasteners, and belongs to the technical fields of civil construction engineering and mechanical assembly.

[ background Art ]

At present, in the fields of civil construction and mechanical installation, the installation requirement for fastening the connection of structural members is large. In the case of bolts currently in common use, when performing a joint tightening operation on a member, a worker needs to simultaneously insert a bolt with a nut on one side of the member and then tighten the nut with a tool on the other side. The connecting and fastening method has the advantages of simple structure, convenient operation and good bearing capacity, but is only suitable for the open section components, and the common bolt and nut connecting and fastening method cannot be used in certain special occasions, such as connecting and fastening the closed section components or the components inconvenient to operate on the other side. Such as: in the steel pipe structure and the steel pipe concrete structure, the beam column connecting joint is provided with a closed section, and the steel pipe column cannot be operated on two sides and can only be connected and installed on one side, so that a unilateral bolt fastener with simple structure and convenient use is needed.

[ invention ]

The invention aims to solve the problems in the prior art and provides a unilateral bolt fastener which is simple in structure and convenient to use.

In order to achieve the above purpose, the invention provides a unilateral bolt fastener, which comprises a screw body, a plurality of sliding grooves, a plurality of sliding bodies, a plurality of blocking bodies, a plurality of magnets and a lining, wherein all the sliding grooves are uniformly distributed on the peripheral surface of the rear end of the screw body in a circumferential shape, the bottom surface of each sliding groove is an inclined surface with low front and high rear, the sliding bodies are arranged in the sliding grooves, the lower end surfaces of the sliding bodies are matched with the bottom surface of each sliding groove, the magnets for fixing the sliding bodies in the sliding grooves in a sliding way are embedded on the lower end surfaces of the sliding bodies, the blocking bodies are arranged at the upper parts of the rear ends of the sliding bodies, the lining is sleeved on the screw body in front of the blocking bodies, and when the front ends of the sliding bodies are contacted with the front ends of the sliding grooves, the upper ends of the blocking bodies exceed the notch of the sliding grooves.

Preferably, when the rear end of the sliding body is contacted with the rear end of the sliding groove, the upper end of the sliding body is flush with the notch of the sliding groove.

Preferably, the sliding body and the blocking body are of an integrally formed structure, the upper end of the blocking body is arc-shaped, and when the front end of the sliding body is contacted with the front end of the sliding groove, the upper end of the blocking body is flush with the peripheral surface of the bushing.

Preferably, the rear end of the screw body is integrally formed with an annular protrusion, the diameter of the annular protrusion is equal to that of the bushing, and when the rear end of the sliding body contacts with the rear end of the sliding groove, the rear end of the sliding body also contacts with the annular protrusion.

Preferably, a square head is arranged at the front end of the screw body.

The invention has the beneficial effects that: according to the invention, the unilateral bolt fastener is inserted into the mounting hole of the first component until the rear end of the bushing exceeds the rear end of the mounting hole, then the bushing is pushed backwards, the bushing pushes the blocking body and drives the sliding body to move backwards until the rear end of the sliding body contacts with the rear end of the sliding groove, as the bottom surface of the sliding groove is a slope with low front and high rear, the lower end surface of the sliding body is matched with the bottom surface of the sliding groove, the sliding body moves upwards while moving backwards, the part of the blocking body extending out of the sliding groove is driven by the sliding body to be more, then the unilateral bolt fastener is pulled forwards until the blocking body presses the rear end of the first component, and then the second component is sleeved on the bushing and is screwed with the fixing nut on the screw body to be screwed.

The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic cross-sectional view of a single-sided bolt fastener of the present invention;

FIG. 2 is a schematic illustration of the installation of a single-sided bolt fastener of the present invention;

FIG. 3 is a partial side view of a single sided bolt fastener of the present invention;

fig. 4 is a perspective view of the blocking body provided on the sliding body.

In the figure: 1-screw body, 2-spout, 3-slider, 4-blocking body, 5-magnet, 6-bush, 7-annular protruding, 8-square head, 9-mounting hole, 10-first component, 11-second component, 12-fixation nut.

[ detailed description ] of the invention

Referring to fig. 1, 2, 3 and 4, the unilateral bolt fastener of the invention comprises a screw body 1, a plurality of sliding grooves 2, a plurality of sliding bodies 3, a plurality of blocking bodies 4, a plurality of magnets 5 and a lining 6, wherein all the sliding grooves 2 are uniformly distributed on the peripheral surface of the rear end of the screw body 1 in a circumferential shape, the bottom surfaces of the sliding grooves 2 are inclined surfaces with low front and high back, the sliding bodies 3 are arranged in the sliding grooves 2, the lower end surfaces of the sliding bodies 3 are matched with the bottom surfaces of the sliding grooves 2, the magnets 5 which are used for fixing the sliding bodies 3 in the sliding grooves 2 in a sliding manner are embedded on the lower end surfaces of the sliding bodies 3, the blocking bodies 4 are arranged on the upper parts of the rear ends of the sliding bodies 3, the lining 6 is sleeved on the screw body 1 in front of the blocking bodies 4, and when the front ends of the sliding bodies 3 are contacted with the front ends of the sliding grooves 2, the upper end of blocking body 4 surpasses the notch of spout 2, when the rear end of slider 3 and the rear end of spout 2 contact, the upper end of slider 3 and the notch parallel and level of spout 2, slider 3 and blocking body 4 are integrated into one piece structure, the upper end of blocking body 4 is the convex shape, when the front end of slider 3 and the front end of spout 2 contact, the upper end of blocking body 4 and the outer peripheral face parallel and level of bush 6, the rear end integrated into one piece of screw body 1 has annular bulge 7, the diameter of annular bulge 7 equals with the diameter of bush 6, when the rear end of slider 3 and the rear end of spout 2 contact, the rear end of slider 3 also contacts with annular bulge 7, the front end of screw body 1 is equipped with square head 8.

The working process of the invention comprises the following steps:

in the working process of the unilateral bolt fastener, the unilateral bolt fastener is inserted into the mounting hole 9 of the first component 10 until the rear end of the bushing 6 exceeds the rear end of the mounting hole 9, then the bushing 6 is pushed backwards, the bushing 6 pushes the blocking body 4 and drives the sliding body 3 to move backwards until the rear end of the sliding body 3 contacts with the rear end of the sliding groove 2, the lower end surface of the sliding body 3 is matched with the bottom surface of the sliding groove 2 due to the fact that the groove bottom surface of the sliding groove 2 is a front-low and rear-high inclined surface, the sliding body 3 moves upwards while moving backwards, the sliding body 3 drives the blocking body 4 to extend out of the sliding groove 2 more, then the unilateral bolt fastener is pulled forwards until the blocking body 4 presses on the rear end of the first component 10, then the second component 11 is sleeved on the bushing 6, and the fixing nut 12 is sleeved on the screw body 1 and screwed.

The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims

1. A single sided bolt fastener, characterized by: including screw rod body (1), a plurality of spout (2), a plurality of slide body (3), a plurality of magnet (5) and bush (6) that block body (4), all spout (2) are circumference form evenly distributed on the rear end global of screw rod body (1), the tank bottom face of spout (2) is the inclined plane of low back height in front, all be equipped with slide body (3) in spout (2), the lower terminal surface of slide body (3) coincide with the tank bottom face of spout (2), the lower terminal surface of slide body (3) all inlays and is used for with slide body (3) can fore-and-aft sliding fix magnet (5) in spout (2), the rear end upper portion of slide body (3) all is equipped with and blocks body (4), the cover is equipped with bush (6) on the screw rod body (1) of block body (4) the place ahead, when the front end of slide body (3) and the front end contact of spout (2), the upper end of block body (4) exceeds the notch of spout (2), the lower terminal surface of slide body (3) and the slot (2) are the upper end of a body (3) and the upper end of a whole body (4) that blocks when the body (3) is the body (4), when the front end of the sliding body (3) contacts with the front end of the sliding groove (2), the upper end of the blocking body (4) is flush with the outer peripheral surface of the bushing (6), the rear end of the screw body (1) is integrally formed with an annular bulge (7), the diameter of the annular bulge (7) is equal to that of the bushing (6), and when the rear end of the sliding body (3) contacts with the rear end of the sliding groove (2), the rear end of the sliding body (3) also contacts with the annular bulge (7).

2. A single sided bolt fastener as claimed in claim 1 wherein: the front end of the screw body (1) is provided with a square head (8).