KR101669473B1

KR101669473B1 - Screw for fixing balcony railings

Info

Publication number: KR101669473B1
Application number: KR1020160063236A
Authority: KR
Inventors: 유인규
Original assignee: 유인규; 주식회사 비룡금속
Priority date: 2016-05-24
Filing date: 2016-05-24
Publication date: 2016-10-26

Abstract

The present invention relates to a screw for fixing a veranda guardrail, which has a sleeve inserted into a guardrail bracket to tightly attach a bottom surface of a window frame to the guardrail bracket to prevent a gap from spreading when fixing a guardrail on a veranda using the guardrail bracket and then installing the window frame on the veranda, and inserts the head of a screw into the sleeve to expand a volume by compression during a cross groove forming process and be tightly attached to the inner circumferential surface of the sleeve to eliminate concern for loss of an integrated body of the screw and the sleeve and shorten work time to facilitate use. According to the present invention, the screw for fixing a veranda guardrail aligns a mounting hole of a guardrail bracket with a knife block inserted into the outer wall of a veranda, then mounts a screw to fix the guardrail bracket on the outer wall of the veranda, and comprises a sleeve inserted into the mounting hole. The sleeve comprises an outward flange disposed on the outer circumferential surface of an upper end thereof and tightly attached to a surface of the guardrail bracket, and an inward flange formed on the inner circumferential surface of a lower end thereof to stop a lower end of the head of the screw. The outer circumferential surface of the head of the screw is expanded outwardly and tightly attached to the inner circumferential surface of the sleeve by tight fitting to integrate the sleeve and the head when a cross groove of the head of the screw inserted into the sleeve is compressed.

Description

{Screw for fixing balcony railings}

More particularly, the present invention relates to a screw for fixing a veranda guardrail, more particularly, to a guardrail bracket that fixes a guardrail to a veranda with a guardrail bracket and then attaches the window frame to the veranda, so that the bottom surface of the window frame is in close contact with the guardrail bracket, The head of the screw is inserted into the inside of the sleeve to expand the volume by the compression during the forming of the cruciform groove and to be in close contact with the inner circumferential surface of the sleeve so that the screw and the sleeve are formed as one body, .

Generally, in order to install the railings on the apartment veranda, a number of railing brackets are fastened and fixed to the outside wall of the veranda by screwing the heads of the screws to the surface of the railing brackets. When the head of the screw protrudes like this, when the window frame is installed on the outer wall of the veranda, the bottom of the window frame is placed on the head of the screw, and the rail bracket and the gap are opened. Silicone is injected to fill the gap.

However, there is a disadvantage in that a large amount of silicon is injected because of a large gap, and there is a problem that when the silicone is used for a long time after construction, rainwater is poured into the veranda.

To solve this problem, the head of the screw should be embedded inside the rail bracket. If the head is buried, the bracket can not be fixed and a separate washer should be used.

Conventional patent No. 1359792 has proposed a technique in which a nut is buried using a flush washer. This is to fix the support of the rail or the streetlight. In order to prevent the nut fastened to the bolt from protruding to the outside of the bracket, a place where the buried washer can be fitted in the foundation concrete layer is provided.

However, in the case of the conventional patent, since holes are formed in the base concrete layer so as to fit the buried washers, or holes are formed in the molding process, the buried washers must be inserted so that molding work of the base concrete layer is troublesome. Further, since the bolt, the nut, and the flush washer are separated from each other, the worker has to increase the number of assembling parts, and there is a fear of losing the parts when the parts are separately formed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a handrail bracket that fixes a handrail to a veranda, and when the window frame is installed on the veranda, the bottom of the window frame is closely contacted with the handrails bracket, The head of the screw is inserted into the inside of the sleeve to expand the volume by the compression during the cruciform forming process so as to be brought into close contact with the inner circumferential surface of the sleeve so that the screw and the sleeve are not lost to one body, And to provide a screw for fixing a veranda guardrail which is short in working time and easy to use.

In order to achieve the above object, the present invention is a screw for fixing a verandah railing for fixing a railing bracket on an outer wall of a veranda, and a screw hole for fixing the railing bracket to a knife bracket fitted on an outer wall of the veranda, Wherein the sleeve has an outward flange in close contact with a surface of the railing bracket on an upper outer circumferential surface thereof and an inward flange is formed on an inner circumferential surface of the lower end so that the lower end of the head of the screw is hooked; The head of the screw is inserted into the sleeve, and when the cross groove is pressed and pressed, the outer circumferential surface of the head is expanded outward, and the screw and the inner surface of the sleeve are tightly contacted with each other.

According to the present invention, since the head of the screw is located inside the sleeve fitted to the rail bracket, the head does not protrude to the surface of the rail bracket. During the process of forming the screw, the head is inserted into the sleeve and the cross-groove is pressed to the head by press-punching. In this case, the head is expanded in volume while the outer circumferential surface of the head is tightly coupled with the inner circumferential surface of the sleeve. , And a part of the head portion protrudes into a plurality of through holes formed in the sleeve.

Therefore, the fastening force applied to the head portion is transmitted to the sleeve, and the outward flange formed on the outer peripheral surface of the sleeve is placed on the surface of the railing bracket to fix the railing bracket to the outer wall of the veranda. And since the screw and the sleeve are integrated and are not separated, there is an advantage such that the handling is convenient.

Fig. 1 is a view showing the state of a veranda provided with a screw in the embodiment of the present invention
Figure 2 is a perspective view of a sleeve of one embodiment of the present invention;
Fig. 3 is a schematic view showing a molding process of the screw and the sleeve in the embodiment of the present invention
Fig. 4 is a view showing an installation state of the screw in the embodiment of the present invention

1 to 4, the screw of the embodiment of the present invention has a threaded portion 10 on the outer circumferential surface and a head 11 on the upper end. A sleeve 20 fitted to the head part 11 is provided in a cylindrical shape. The sleeve 20 and the head part 11 are fitted in a loose state. In the sleeve 20, a plurality of through holes 23 are radially drilled.

The threaded portion 10 is threaded on the outer circumferential surface in a rolling manner, and the cross groove 12 of the head 11 is formed by a press-pressing method. The head portion 11 is fitted in the sleeve 20 before the cross groove 12 is formed. In this state, when the cross groove 12 is pressed, the head 11 is expanded and the outer circumferential surface is tightly engaged with the inner circumferential surface of the sleeve 20, Is inserted into the through hole (23) of the housing (20) and is formed as the expansion projection (13).

The sleeve 20 is provided with an outward flange 21 at the upper end and an inward flange 22 at the lower end and the outward flange 21 lies on the surface of the railing bracket 30. The outer circumferential surface of the sleeve 20 is inserted into the fastening hole 31 of the railing bracket 30 so that the outer circumferential surface of the sleeve 20 is close to the inner circumferential surface of the fastening hole 31, do.

In the embodiment of the present invention configured as described above, a part of the screw protrudes into the through hole of the sleeve 20 in the process of pressing the head 11 of the screw to form the cruciform groove 12 so that the expansion projection 13 So that the head 11 and the sleeve 20 are integrated and not separated.

These screws are used as follows. First, a hole is drilled in the outer wall 40 of the veranda, and a plastic re-knob 50 is inserted into the hole. Thereafter, a railing bracket 30 for fixing the railing support 32 is placed on the outer wall 40 of the veranda, and the fastening hole 31 and the rake 50 are aligned with each other, and then the rails are fastened to the rake 50 . In this process, the sleeve 20 is inserted into the fastening hole 31. When the outward flange 21 provided at the upper end of the sleeve 20 contacts the surface of the railing bracket 30, (40).

When the window frame 41 is placed on the outer wall 40 of the veranda, the bottom surface of the window frame 41 is directed to the rail bracket 30. At this time, the gap between the window frame 41 and the rail bracket 30 is minimized by contacting the outward flange 21 . Therefore, when the silicone-based finishing material 42 is filled between the window frame 41 and the veranda outer wall 40, the amount of filling can be reduced and the spread of the finishing material 42 can be advantageously reduced.

10: screw portion 11: head portion
12: Cross groove 13: Expansion projection
20: Sleeve 21: Outward flange
22: inward flange 23: through hole
30: railing bracket 31: fastening hole

Claims

A screw for fixing a veranda guardrail for fixing a fixing hole of a railing bracket to a knife block fitted on an outer wall of a veranda to fix a railing bracket to an outer wall of the veranda,
Wherein the sleeve is provided with an outward flange which is in close contact with the surface of the railing bracket on an upper outer circumferential surface thereof and an inward flange is formed on the inner circumferential surface of the lower end so that the lower end of the head of the screw is hooked;
Wherein a head portion of the screw is inserted into the sleeve so that when the cruciform groove is press-pressed, the outer circumferential surface of the head portion is expanded outward, and the screw and the head portion are integrated by tightly fitting the inner circumferential surface of the sleeve. Screws.

The method according to claim 1,
A plurality of through holes are drilled radially in the sleeve,
Wherein the head is formed with an expansion protrusion that is inserted into the through hole while the outer circumferential surface is expanded in the process of pressing the cruciform groove.