KR20190054371A - One-touch Quick-coupler for Connecting Reinforcing Rods - Google Patents

Abstract

The present invention relates to a one touch-type rebar coupler which connects a plurality of rebars. According to the present invention, the one touch-type rebar coupler comprises: a pair of coupler bodies having a hollow part with a taper unit whose internal diameter gradually increases from an entrance towards the opposite side; a socket inserted through an end unit on the opposite side to the entrance of the coupler bodies; a plurality of shells installed to have an external side surface, which is adjacent to the taper unit, inside the hollow part of each of the coupler bodies, including: a plurality of locking bumps supported by hanging a joint of the rebars on an internal side surface, and an engagement piece is formed on one end unit to be extended towards the socket; a cylindrical holder which includes: a disc-shaped holder disc; and a flange formed on the outer circumferential edge unit of the holder disc to be inserted into an internal side surface of the engagement piece of the shells, and which, when the rebar is inserted through the entrance, collides with an end unit of the rebar to be dislodged to the outside of the engagement piece of the shells; and a compressed coil spring which applies an elastic force towards an upper side of the shells and the socket. An internal side surface of the engagement piece of the shells is made of an internal taper unit which is inclined towards the outside in a radial direction from the entrance side towards the socket. The present invention aims to provide a one touch-type rebar coupler which is able to reduce the number of used parts and be easily assembled and maintained.

Description

One-touch Quick-coupler for Connecting Reinforcing Rods

The present invention relates to a coupler for connecting reinforcing bars, and more particularly, to a coupler for connecting reinforcing bars, more specifically, a structure in which a plurality of pieces having teeth-shaped protrusions are held at predetermined intervals by a holder and a spring, The present invention relates to a one-touch type reinforced concrete coupler which is capable of fixing a reinforcing bar with a strong force by automatically disengaging a holder from a body by a reinforcing bar.

Conventionally, in order to connect reinforcing bars for use in concrete structures in various construction sites, reinforcing bars are conventionally bundled and fixed in a double layer structure. However, in this reinforcing bar fixing method, an operator has to wire the reinforcing bars around the reinforcing bars a plurality of times The work is troublesome and the center of the reinforcing bar is not vertical and is not straight, but the strength of the wire is weak, so that it is easily broken and the connection state is released.

In order to solve these problems, reinforcing bars (coupling devices) have been developed and used for easily and firmly connecting reinforcing bars by means other than wires.

However, most of the conventional reinforcing bars are structured by inserting the reinforcing bars into the housing and then screwing the housing into the housing, which is complicated in structure and difficult to connect the reinforcing bars. there is a problem.

In order to solve such a problem, Korean Registered Patent No. 0439305 (registered on June 28, 2004), Korean Registered Patent No. 0462291 (registered on December 2004), Korea Registered Patent No. 1003302, One-touch type reinforcing couplers are disclosed.

The conventional one-touch type reinforcing couplers have a plurality of assemblies for holding reinforcing bars inside the coupler. When the reinforcing bars are inserted, they naturally spread outwardly. When the reinforcing bars are completely inserted, When the tensile force is applied to the reinforcing bar, the wing acts as the wing is supported by the inclined surface of the coupler body so that the reinforcing bar is firmly supported from the coupler body.

However, the conventional one-touch type reinforcing couplers are required to maintain a widened state when the reinforcing bars are inserted, but it is difficult to maintain the predetermined position due to the elastic force of the spring disposed at the lower portion of the fitting. And there is a problem that the verticality of the reinforcing bar is not accurately displayed.

Japanese Patent Application No. 10-1683143 discloses a structure in which a cylindrical holder is inserted into one end of a plurality of assemblies to maintain a state where a plurality of assemblies are inserted and when the reinforcing bars are inserted into the coupler body, A type of one-touch type reinforcing coupler is disclosed in which the outer surfaces of the reinforcing bars can be firmly gripped by automatically disengaging the plates.

However, in such a conventional one-touch type reinforcing coupler, a ring-shaped spring is required to be inserted into the inner part of the fixture so that the fixtures are not pinched before the reinforcement is inserted into the coupler, There is a drawback that it is difficult to manage and assembly is difficult.

Also, in the middle part of the coupler, there is provided a socket having a cylindrical shape for limiting the entry position of the reinforcing bars and connecting the two coupler bodies. Such a socket limits the entry position of the reinforcing bars in the middle part, The sockets can not be manufactured by injection molding, and both end portions of the round bar shaped material must be cut into a hollow tube shape, which makes it difficult to manufacture, and there is a problem that the production cost is increased due to waste of the material.

Korean Registered Patent No. 10-1683143 (Registered on November 30, 2016) Korean Registered Patent No. 10-0462291 (Registered on December 8, 2004) Korean Registered Patent No. 10-1003302 (Registered on December 16, 2010) Korean Registered Patent No. 10-1259959 (Registered on April 25, 2013)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to reduce the number of parts to be used, Touch type reinforcing coupler that is easy to manage.

Another object of the present invention is to provide a one-touch type ferrule coupler which can easily and cheaply manufacture a socket having a circular tube shape connecting two coupler bodies.

According to an aspect of the present invention, there is provided a one-touch type reinforced coupler having an inlet through which a reinforcing bar is inserted into an upper end portion and a lower end portion, respectively, and a hollow portion having a tapered portion gradually increasing in diameter toward the opposite side A pair of coupler bodies having a portion; A socket disposed between the pair of coupler bodies and inserted through opposite ends of an inlet of each coupler body; Wherein a plurality of locking protrusions are arranged on the inner side of the hollow portion of each of the coupler bodies so as to be connected to the tapered portion, A plurality of elastics; And a flange inserted into the inner side of the coupling piece of the plurality of coupling bodies, the coupling disk being formed on the outer periphery of the holder disk so as to extend toward the inlet side of the holder disk. A holder in the form of a circular tube which is brought into contact with the end of the reinforcing bar when the reinforcing bar is inserted through the inlet, And an inner side surface of the coupling piece is formed as an inner side taper portion which is inclined radially outward from the inlet side toward the socket side.

According to the present invention, when the inner side surface of the engaging piece formed at one end of the fixture is made of an inner tapered portion that is inclined radially outwardly, when the flange of the holder is inserted into the engaging piece of the fixture, And the flange of the holder acts to open the upper part of the engagement piece of the plate body radially outwardly. Therefore, since a ring-shaped spring is not required to spread the gap between the plates before entering the reinforcing bar, the number of parts can be reduced.

And a compression coil spring that is inserted into the flange outer side surface of the coupling piece and the flange outer side surface of the coupling body and an elastic part which is supported in contact with one end of the socket and generates an elastic force, When the holder is detached from the body and the compression coil spring presses the body in the axial direction, the elastic body can stably support the plurality of bodies without causing the body and the compression coil spring to separate from each other, There is an effect.

A socket body for connecting a pair of coupler bodies and restricting the insertion position of the reinforcing bars, a socket body having a cylindrical hollow tube shape, and a socket body inserted into the socket body through one end of the socket body, In the case of a disk-shaped diaphragm to be coupled, the manufacture of the socket becomes very easy, and the manufacturing cost can be greatly reduced.

1 is an exploded cross-sectional view of a one-touch type reinforcing coupler according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a main portion of the reinforcing coupler shown in FIG. 1; FIG.
3 is a cross-sectional view of the reinforcing coupler shown in FIG.
FIG. 4 is an exploded cross-sectional view of a part of the reinforcing coupler shown in FIG. 1. FIG.
FIG. 5 is a cross-sectional view showing a coupled state of components shown in FIG.
6 is a sectional view of the socket body constituting the socket of the reinforcing coupler shown in Fig.
7 is a plan view showing a diaphragm constituting the socket of the reinforcing coupler shown in Fig.
8 is a cross-sectional view of a main portion of a one-touch type reinforcing coupler according to another embodiment of the present invention.
Figure 9 is a front view of a compression coil spring applied to the reinforcing coupler of Figure 8;

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, as claimed, and it is to be understood that the invention is not limited to the disclosed embodiments.

Hereinafter, a one-touch type reinforcing coupler will be described in detail with reference to the embodiments described below with reference to the accompanying drawings. Like numbers refer to like elements throughout the drawings.

Referring to FIGS. 1 to 7, a one-touch type reinforced coupler according to an embodiment of the present invention includes a pair of coupler bodies 10a and 10b in the form of a cylindrical tube, a pair of coupler bodies 10a and 10b, A plurality of assemblies 20 provided inside the coupler bodies 10a and 10b and firmly holding the reinforcing bars B inserted into the coupler bodies 10a and 10b and the holder 30 and the compression coil springs 40, ).

The two coupler bodies 10a and 10b are paired and coupled to each other through the socket 50. [ The coupler bodies 10a and 10b are made of a rigid metal material and have an inlet 11a through which the reinforcing bar B is inserted at one end thereof. The coupler bodies 10a and 10b are formed so as to extend from the opposite side of the inlet 11a toward the inlet 11a And a hollow portion 11 in which a tapered portion 12 gradually decreases in inner diameter is formed. Another coupler body 10a having a symmetrical shape is connected to one end of the opposite end of the one end of the coupler body 10a or 10b through which the inlet 11a of the coupler body 10a is formed via a socket 50, 10a and 10b, the two reinforcing bars B can be connected to each other.

The end of the fixture 20 is hooked and supported when the fixture 20 is moved toward the inlet 11a by the elastic force of the compression coil spring 40 at the inner periphery of the inlet 11a of the coupler bodies 10a and 10b The stopper 14 is formed so as to protrude radially inward. It is preferable that the stopper 14 is formed to be curved in a shape corresponding to the shape of the end portion of the body 20.

A female thread 13 for coupling with the socket 50 is formed on the inner peripheral surface of the end of the coupler body 10a or 10b into which the socket 50 is inserted.

The assembly 20 and the holder 30 and the compression coil spring 40 formed inside the pair of the coupler bodies 10a and 10b are installed symmetrically with respect to the socket 50. [ The structure and operation of the reinforcing coupler of the present invention are mainly carried out with the coupler body 10a disposed on the upper side and the fixture 20, the holder 30, and the compression coil spring 40 formed on the inside thereof, An example is given.

The plurality of (typically three to four) assemblies 20 are arranged in the circumferential direction in the hollow portion 11 of the coupler body 10a, and each of the outer surfaces is curved, And are connected to each other in correspondence with each other. The plurality of fixtures 20 have the same shape and a plurality of locking protrusions 21 and 21 are formed on the inner surface of the fixture 20 so as to be supported by the nodule P of the reinforcing bar B while being caught. The locking protrusions 21 and 21 are arranged at a constant pitch along the axial direction of the coupler body 10a and are fixed to the ratchet B so as to resist the tensile force applied from the node P of the reinforcing bar B, ratchet) saw tooth shape. The locking protrusions 21 are preferably formed at a pitch of 1 +/- 0.05 mm, but may be changed according to the standard of the reinforcing bars.

A coupling piece 22 supported by the holder 30 and the compression coil spring 40 is formed at the lower end of the body 20 so as to extend toward the socket 50 at the lower side. The holder 30 is composed of a disk-like holder disk 31 and a flange 32 formed along the outer periphery of the holder disk 31. The flange 32 is inserted into the engaging piece 22 of the body 20 And is brought into close contact with the inner surface of the engaging piece 22 to support the body 20.

When the reinforcing bars B are not inserted into the coupler bodies 10a and 10b, the fixtures 20 are spaced apart by a predetermined distance from the holder 30 and the reinforcing bars B are inserted into the coupler bodies 10a and 10b 11a and the holder 30 is released to the outside of the engaging piece 22, the pressing coil spring 40 pushes it upward and is moved by the tapered portion 12, The locking protrusions 21 firmly fix the outer surface of the reinforcing bar B. At this time, the bracket 20 acts as a wedge to resist the tensile force applied to the reinforcing bar (B).

The engaging piece 22 formed at the lower end of the body 20 has a thickness slightly smaller than the thickness of the upper body so that a step 23 is formed between the upper portion of the body 20 and the outer surface of the upper end of the engaging piece 22 , And the upper end of the compression coil spring (40) is hooked to the step (23). The inner side surface of the engaging piece 22 is composed of an inner tapered portion 22a inclined outward in the radial direction from the inlet 11a side toward the socket 50 side. The outer side surface of the engaging piece 22 is composed of an outer tapered portion 22b inclined inward in the radial direction from the inlet 11a side toward the socket 50 side.

The flange 32 of the holder 30 is inserted into the engaging piece 22 of the fitting body 20 and the inner tapered portion 22a of the engaging piece 22 is inclined radially outwardly toward the lower side The flange 32 of the holder 30 acts to open the upper part of the engaging piece 22 of the plate 20 radially outward as well as to be inserted smoothly without being caught by the end of the engaging piece 22 do. Therefore, it is not necessary to use a ring-shaped spring to spread the gap of the body 20 before entering the reinforcing bar.

When the outer surface of the coupling piece 22 is formed of the outer tapered portion 22b, the coupling piece 22 can be smoothly slid into the compression coil spring 40 and inserted.

The holder 30 has a disc-like holder disc 31 which is brought into contact with an end of the reinforcing bar B inserted through the inlet 11a of the coupler body 10a, And a flange 32 formed to extend toward the inlet 11a and inserted into the inner side surface of the engaging piece 22 of the body 20 to be in close contact therewith. The holder 30 acts to support the gap between the plurality of fixtures 20 in an enlarged state before the reinforcement B is inserted into the coupler body 10a and the reinforcement B is inserted through the inlet 11a, The end portion of the reinforcing bar B abuts against the outside of the engaging piece 22 of the bracket 20.

The compression coil spring 40 is configured such that the coil is wound in a spiral shape and applies an elastic force to the body 20 toward the inlet 11a. The compression coil spring 40 is provided on the outer side of the engaging piece 22 and on the outer side of the flange 32 of the holder 30, And the elastic pieces 43 that are held in contact with each other and generate an elastic force and the knitting fasteners 42 are arranged such that the coils 41 are connected to each other without a gap between the coils 41, And the elastic portion 43 is formed with a predetermined spacing between the coils 41 to generate an elastic force in the axial direction of the coupler body 10a .

As described above, the compression coil spring 40 is inserted into the outer surface of the engagement piece 22 of the fixture 20 and the outer surface of the flange 32 of the holder 30, The holder 30 is detached from the body 20 and the elastic piece 43 is held in contact with the elastic body 43. When the holder 30 is detached from the body 20, When the compression coil spring 40 presses the fixture 20 in the axial direction, there is no phenomenon that the fixture 20 and the compression coil spring 40 are separated from each other, and the compression coil spring 40 is fixed to the plurality of fixtures 20 So that the elastic force can be applied.

The socket 50 is inserted into the socket body 51 through the one end of the socket body 51 in an independent form with the socket body 51 and is inserted into the socket body 51 at the center of the inner space of the socket body 51 And includes a diaphragm 52 that is coupled to the disk. On the outer circumferential surface of the socket body 51 is formed a male screw thread 56 which is helically engaged with the female screw thread 13 formed on the inner peripheral surface of the end portion of the pair of coupler bodies 10a and 10b. When the female thread 13 at the end of the coupler body 10a or 10b is aligned with the male thread 56 of the socket body 51 and the coupler body 10a or 10b or the socket body 51 is rotated, The coupler bodies 10a and 10b are coupled to the socket 50 by the spiral coupling between the coupler bodies 13 and 13 and the male threads 56 so that the two coupler bodies 10a and 10b can be connected to each other via the socket 50 do.

A coupling groove 55 is formed in the center of the inner circumferential surface of the socket body 51 in a ring shape along the circumferential direction. A plurality of engaging projections 53 are formed at predetermined intervals on the rim of the diaphragm 52 while being inserted into the engaging groove 55. The engaging protrusions 53 are arranged alternately along the circumferential direction of the first engaging protrusions 53 and the second engaging protrusions 53 having a triangular shape having opposite phases and the hexagonal wrench (Hexagonal in this embodiment) in which a tool such as a tool or the like is inserted.

A tool such as a hexagonal wrench is inserted into the through hole 54 to fix the socket 50 to the tool and the socket 50 to be fixed to the tool when the socket 50 is rotated relative to the coupler bodies 10a, The socket 50 can be easily coupled to the coupler bodies 10a and 10b or the socket 50 can be easily separated from the coupler bodies 10a and 10b by relatively rotating the coupler bodies 10a and 10b with respect to the end portions of the coupler bodies 10a and 10b have. At this time, since the engaging projections 53 formed on the diaphragm 52 have mutually opposite triangular shapes, when the socket 50 is rotated in the tightening direction and in the direction separating the socket 50, The diaphragm 52 and the socket body 51 are allowed to move integrally without the diaphragm 52 being covered by the engagement protrusions 53 in the reverse phase.

The diaphragm 52 is manufactured separately from the socket body 51 in the form of a hollow tube, and then inserted into the inner space through one end of the socket body 51 to be coupled. Since the diaphragm 52 has an outer diameter slightly larger than the inner diameter of the socket body 51, when the diaphragm 52 is inserted into the inner space of the socket body 51, the diaphragm 52 deforms slightly, When the outer circumferential edge of the engaging groove 55 reaches the engaging groove 55, the engaging groove 55 is elastically inserted and engaged. The engaging projection 53 of the outer circumferential edge of the diaphragm 52 is caught while being in close contact with the inner surface of the engaging groove 55. Accordingly, when the tool is inserted into the through hole 54 of the diaphragm 52, So that they can be rotated together with the socket body 51.

The thus constructed one-touch type reinforcing coupler of the present invention works as follows.

The assemblies 20 disposed inside the coupler bodies 10a and 10b before inserting the reinforcing bars B into the coupler bodies 10a and 10b are separated from each other by the holder 30 inserted through the space at the lower end thereof at predetermined intervals And keeps the state open. At this time, the flange 32 of the holder 30 is inserted into the engagement piece 22 of the fixture 20 while being closely attached thereto, thereby opening the fixture 20 radially outward. The outer surface of the engaging piece 22 of the fixture 20 and the outer surface of the flange 32 of the holder 30 are inserted into the one end of the compression coil spring 40 supported by the socket 50 .

When the reinforcing bars B are inserted into the hollow portion 11 through the inlet 11a of the coupler body 10a in this state, the reinforcing bars B pass through the joints 20. The ends of the reinforcing bars B which have passed between the joints 20 contact the holder disc 31 of the holder 30 and push the holder 30 toward the socket 50. As a result, The force for supporting the inner side portion of the body 20 is removed while exiting from the engagement piece 22 of the body 20 and the body 20 is brought into close contact with the tapered portion 12 while receiving the elastic force by the compression coil spring 40 The knobs 20 are automatically closed. The locking protrusion 21 on the inner surface of the braid 20 is strongly pressed against the outer surface of the reinforcing bar B.

The holder 30 which has moved away from the body 20 by the reinforcing bars B is inserted into the inner space of the socket 50 and is hooked on and supported by the diaphragm 52 of the socket 50, The approach position is limited.

When the reinforcing bars B are inserted into the coupler bodies 10a and 10b and connected to the reinforcing bars B in the axial direction of the coupler bodies 10a and 10b to separate the reinforcing bars B The nip P of the reinforcing bar B hits the locking protrusion 21 of the bracket 20 and presses the bracket 20 upward. At this time, the tapered portion 12 is pushed toward the inlet 11a The joints 20 act as a wedge to tightly restrain the reinforcing bars B inside the coupler bodies 10a and 10b without falling off.

Particularly, the upper end of the body 20 is caught by the stopper 14 formed on the periphery of the inlet 11a of the coupler body 10a so that the body 20 is released to the outside through the inlet 11a .

When the reinforcing bars B are inserted and fixed to the coupler bodies 10a and 10b, the concrete mortars are poured and the coupler bodies 10a and 10b and the reinforcing bars B are fixed in the concrete.

The reinforcing coupler of the first embodiment has a structure in which the compression coil spring 40 has a substantially constant diameter from the top to the bottom so that one end of the compression coil spring 40 is connected to the outer surface of the coupling piece 22 of the coupling body 20 and the flange 32 of the holder 30, And the other end is supported outside the one end of the socket body 51 to apply an elastic force to the body 20.

However, as shown in other embodiments in Figs. 8 and 9, the compression coil spring 40 is attached to the outer surface of the engaging piece 22 of the fixture 20 and the outer surface of the flange 32 of the holder 30 The tapered shape may have a diameter decreasing from the portion to be inserted into the socket 50 toward the socket 50. The tapered compression coil spring 40 has a relatively large diameter portion inserted into the outer surface of the engaging piece 22 of the fixture 20 and the outer surface of the flange 32 of the holder 30, Is inserted into the relatively small socket body (51) and is supported by the diaphragm (52).

When the compression coil spring 40 is tapered and inserted into the socket body 51 and supported by the diaphragm 52, the overall size of the coupler bodies 10a and 10b can be advantageously reduced .

Even when the compression coil spring 40 has a tapered shape, the compression coil spring 40 is inserted into the outer side surface of the coupling piece 22 and the outer side surface of the flange 32 of the holder 30, The coil may be connected to each other without a space between the coils and the coil may be formed at a distance from each other to generate an elastic force.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims. And it is to be understood that such modified embodiments belong to the scope of protection of the present invention defined by the appended claims.

10a, 10b: Coupler body 11: Hollow part
11a: inlet 12: tapered portion
13: female thread 14: stopper
20: coupling 21: locking projection
22: engaging piece 22a: inner taper part
22b: outer tapered portion 23: stepped portion
30: Holder 31: Holder disk
32: flange 40: compression coil spring
41: coil 42:
43: elastic portion 50: socket
51: socket body 52: diaphragm
53: engaging projection 54: through hole
55: engaging groove 56: male thread

Claims (10)

And a hollow portion 11 having an inlet 11a for inserting reinforcing bars into the upper and lower ends thereof and a tapered portion 12 having an inner diameter gradually increasing toward the opposite side from the inlet 11a, A pair of coupler bodies 10a and 10b;
A socket 50 disposed between the pair of coupler bodies 10a and 10b and inserted through an opposite end of the inlet 11a of each of the coupler bodies 10a and 10b;
A plurality of coupler bodies 10a and 10b are provided in such a manner that an outer side surface of the coupler bodies 10a and 10b is connected to the tapered portion 12 and an inner side surface of the coupler bodies 10a and 10b is supported by a node P of a reinforcing bar B A plurality of fixtures (20) having locking projections (21) arranged at one end thereof and a coupling piece (22) extending toward the socket (50) at one end;
A disc-shaped holder disc 31 which strikes an end portion of the reinforcing bar B inserted through the inlet 11a of the coupler bodies 10a and 10b and an inlet 11a formed in the outer periphery of the holder disc 31, And a flange 32 formed to extend to the inner side surface of the coupling piece 22 of the plurality of fixtures 20. When the reinforcing bar B is inserted through the inlet 11a, A holder 30 in the form of a circular tube which is brought into contact with an end of the coupling body 22 and is released to the outside of the coupling piece 22 of the coupling body 20;
A compression coil spring (40) for applying an elastic force upward to the fixture (20) with respect to the socket (50);
/ RTI >
Wherein the inner side surface of the engaging piece 22 of the fixture 20 is an inner tapered portion 22a inclined outward in the radial direction from the inlet 11a side toward the socket 50 side. The connector according to claim 1, wherein the compression coil spring (40) has one end supported on one end of the socket (50) and the other end supported on the outer surface of the engagement piece (22) Type ferrule coupler which is inserted into the outer surface of the flange 32 and applies an elastic force to the fitting body 20 toward the inlet 11a with respect to the socket 50. [ The connector according to claim 2, wherein the compression coil spring (40) comprises a fastening part (42) inserted into an outer surface of the coupling piece (22) and an outer side surface of the flange (32) of the holder (30) And the elastic pieces 43 are supported by being in contact with the elastic parts 43. The elastic pieces 43 are connected to the coils 41 without the gap between the coils 41, Type ferrite coupler in which coils 41 are spaced apart from each other to generate an elastic force. The connector according to any one of claims 1 to 3, wherein an outer side surface of the engaging piece (22) of the fixture (20) has an outer tapered portion inclined radially inwardly from the inlet (11a) side toward the socket (50) 22b). The connector according to claim 1, wherein the socket (50) is inserted into the inner ends of the pair of coupler bodies (10a, 10b) A socket body 51 in the form of a hollow tube in which a male thread 56 is formed to be spirally engaged with the socket body 51 and a socket body 51 provided to cross the center of the inner space of the socket body 51, Shaped diaphragm (52) for supporting the diaphragm
Wherein the diaphragm (52) is formed separately from the socket body (51), inserted through an open end of the socket (50), and then coupled to the center of the inner space of the socket (50). The socket body according to claim 5, wherein a coupling groove (55) is formed in a ring shape along the circumferential direction at the center of the inner peripheral surface of the socket body (51) Shaped reinforcing coupler having a plurality of engaging projections (53) joined at predetermined intervals. 7. The apparatus according to claim 6, wherein the engaging projections (53) have first engaging projections (53) and second engaging projections (53) having a triangular shape with opposite phases being alternately arranged in the circumferential direction, Shaped through-hole 54 is formed at the center of the reinforcing coupler 54. [ 6. The one-touch type reinforced coupler according to claim 5, wherein the compression coil spring (40) has a tapered shape whose diameter decreases from a portion in contact with the fitting body (20) to a portion in contact with the socket (50). The connector according to claim 8, wherein the compression coil spring (40) has one end inserted into the socket body (51) and supported by the diaphragm (52) Type reinforcing coupler which is inserted into the outer surface of the flange 32 of the holder 30 and applies an elastic force to the fitting body 20 toward the inlet 11a with respect to the socket 50. [ The coupling body (20) according to claim 1, wherein when the coupling body (20) is moved toward the inlet (11a) by the elastic force of the compression coil spring (40) on the inner periphery of the inlet (11a) of the pair of coupler bodies (10a, And a stopper (14), which is supported by an end portion of the stopper (20), is protruded radially inward.

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