KR101625012B1

KR101625012B1 - Fittings for scaffolding construction method

Info

Publication number: KR101625012B1
Application number: KR1020150161522A
Authority: KR
Inventors: 송대호
Original assignee: 주식회사 금호
Priority date: 2015-11-18
Filing date: 2015-11-18
Publication date: 2016-05-27

Abstract

The present invention relates to an improved connector for a building scaffold. More specifically, a protruding strip is formed in an annular shape in the middle, and connection pipes of the same length are formed on the upper and lower sides of the protruding strip, A semicircular guide portion is formed laterally from the inside of the opening portion to form a locking protrusion having an arc-shaped contact surface on the inner upper end portion, and an extended contact surface is formed on the inner surface of the locking protrusion to stably engage the connecting rod of the scraper pipe, And a method of manufacturing the same.

Description

{Fittings for scaffolding construction method}

The present invention relates to an improvement of a connector for a building scaffold. More specifically, a protruding strip is formed in an annular shape in the middle, and connection pipes of the same length are formed on the upper and lower sides thereof, A guide groove is formed at an inner upper end portion of the guide groove so as to form an arc-shaped engagement protrusion having a curved surface corresponding to the outer diameter of the engagement rod, and an engagement groove having an extended contact surface having a predetermined width formed on the inner surface of the engagement protrusion Thereby reinforcing the strength of the connecting port for stably connecting the latching bar of the scaffold pipe.

Further, according to the present invention, it is also possible to selectively provide a reinforcement portion by further forming a concave groove in a longitudinal direction on a circumferential wall of a coupling pipe in which a coupling groove is formed. The method comprising the steps of:

A conventional scaffold connector is known from Utility Model Registration No. 20-0306734.

The conventional scaffold connector forms a connection pipe having a predetermined length on both sides of the middle protruding boundary portion and forms an engaging groove having a shape of "b" opening one end on the peripheral wall of the connecting pipe, Since the bottom portion leading to the engaging jaw is formed to have a long flat surface so that the engaging rod is loosely engaged, there is inconvenience that the engaging state is not stabilized, and the curved leg portions of the engaging groove are formed on the basis of the tensile force acting on the engaging jaw It was easily deformed or ruptured, resulting in a shortage of durability.

The present invention has been developed in order to solve the above drawbacks.

A semicircular guide portion is formed from the inside of the opening portion of the coupling groove to the side engaging jaw when the coupling groove formed in the peripheral wall of the connection pipe of the scaffold connector is formed, and a circular arc shape having a curved surface corresponding to the outer diameter of the engagement rod is formed on the inner upper end portion. And an extended contact surface having a predetermined width is formed on the inner surface of the latching jaw.

According to another aspect of the present invention, there is provided a method of manufacturing an electro-optical device, comprising the steps of: forming a reinforcing portion by further forming a concave groove in a longitudinal direction of a peripheral wall of a connecting tube; Method.

According to the present invention as described above, the coupling groove formed in the coupling pipe of the scaffold connector and coupled with the latching bar of the scaffold pipe is formed of a semi-circular guide portion from the inside of the opening to the side engaging jaw to form a curved surface, An arc-shaped locking protrusion having a corresponding curved surface is formed, and an extended contact surface having a constant width is formed on the inner surface of the locking protrusion of the arc. Therefore, if the connecting pipe is inserted into the coupling portion of the scraper pipe to twist the scraper pipe, The engaging rod is inserted into the opening portion and moves along the semicircular guide portion formed on the inner upper side of the opening portion with the engaging jaw formed on the inner upper end to be engaged with the engaging jaw on the circular arc, So that the locking bar can be stably accommodated and fixed, and the inner diameter of the coupling jaw And the inner surface of the coupling groove is connected by a single curved line so that the curved corner portion is formed in a curved shape There is an advantage that the tensile force is uniformly distributed when tensile force is applied to the connector, so that the inner surface of the coupling groove is not deformed or ruptured easily, thereby providing durability.

In addition, since the present invention can reinforce a peripheral wall of a connection pipe by forming a reinforcement portion having a recessed groove in the longitudinal direction on the peripheral wall of the connection pipe, there is an advantage that the durability of the connection port can be further assured,

Further, the present invention is characterized in that an extending protrusion is formed in the engaging jaw forming portion to form an extended contact surface on the inner surface of the engaging jaw on the arc inside the opening portion of the connecting pipe, a core having the forming groove is inserted into the connecting tube, Since the extended protrusion can be formed by forcing the connecting protrusion to the molding groove of the core body by forcing the extended protrusion to contact with the punching mold having the punch, the extended contact surface can be formed without welding, There is an advantage that the production of a good quality product can be achieved more inexpensively.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.
2 (a), 2 (b), 2 (c) and 2 (d) are diagrams of a manufacturing process for manufacturing the connector of the present invention
FIG. 3 is a view showing still another embodiment of the present invention
Fig. 4 is a plan view of Fig. 3. Fig.

The present invention is characterized in that a connecting pipe (2) (2a) having the same length is formed on both sides of an intermediate protruding band (1) of a building scaffolding connector having a tubular body and a coupling groove 3) (3a)

The engaging groove 3 (3a) is formed with a semicircular guide portion 31 on the side of the inner side of the opening portion 30 and an engaging protrusion 32 having a curved surface corresponding to the outer diameter of the engaging rod is formed on the inner upper end portion , And an extended contact surface (33) is formed with a constant width on the inner side of the latching jaw on the circular arc.

In addition, the connecting tube (2) (2a) of the present invention further includes a reinforcing portion (34) formed on the circumferential wall along the longitudinal direction as a concave groove.

The present invention further includes the steps of forming an extending protrusion 35 in the engaging protrusion 32 formed in the engaging groove 3 a of the connecting tube 2 a,
An insert 36 is inserted into the connecting pipe and a core body 36a is formed in the insert 36 so as to face the inner surface of the extending protrusion 35 so that the insert of the core is inserted into the inner surface An expanding contact surface molding preparation step of inserting the molding groove 36a formed in the core insertion portion 36 into the inner surface of the extending protrusion 35,
A molding member having a punch 37 so as to form the extended contact surface 33 by bending the lower end of the extending stone piece inwardly from the engaging jaw 32 by bending the extending protrusion 35 from the outside of the extending piece to the molding groove of the core body, And an extended contact surface forming step of forming an extended contact surface 33 on the inner surface of the stopping jaw by bending the lower end of the extension stone of the connection pipe into the inner surface of the stopping jaw by making the punch contact with the outer surface of the extending protrusion, And a method for manufacturing a scaffold connector.

1: intermediate protruding strip 2, 2a: connector
3,3a: coupling groove 30: opening portion
31: semicircular guide portion 32:
33: extended contact surface 34: reinforced portion
35: extension protrusion 36:
36a: forming groove 37: punch
: Core: Core

Claims

(2) (2a) of the same length are formed on the upper and lower sides of the intermediate protruding strip (1) of a building scaffolding connector as a tubular body, and engaging grooves (3) (3a) is formed,
The engaging groove 3 (3a) is formed with a semicircular guide portion 31 on the side of the inner side of the opening portion 30, and an engaging step 32 having a curved surface corresponding to the outer diameter of the engaging rod is formed on the inner upper end portion , And an extension contact surface (33) having a constant width on the inner side surface of the latching jaw

Claim 1
The connecting pipe (2) (2a) of the connecting port is provided with a reinforcing portion (34) formed as a concave groove along the longitudinal direction on the circumferential wall,

Forming an extending protrusion (35) in the engaging protrusion (32) forming portion formed in the engaging groove (3) (3a) of the connecting tube (2)
A core body 36a is formed by inserting the insertion portion 36 into the coupling tube 2 and forming a molding groove 36a in the insertion portion 36 so as to face the inner side surface of the extending protrusion 35 A predetermined contact surface molding preparation step of inserting an insert portion of the core body into the inner surface of the connecting pipe 2 (2a) and fitting the molding groove 36a formed in the insert portion 36 of the core body to the inner surface of the extending protrusion 35,
The extension protrusion 35 is pushed toward the molding groove 36a of the core and the lower end of the extension protrusion 35 is bent inward from the stopping protrusion 32 so as to form the extended contact surface 33, 37), forming an extended contact surface (33) on the inner surface of the stopping jaw by bending the lower end of the extended stone piece into the inner surface of the stopping jaw by making the punch contact with the outer surface of the extending stone, Method for manufacturing a connector for a building scaffolding