KR20150002450U

KR20150002450U - Air coupler

Info

Publication number: KR20150002450U
Application number: KR2020130010461U
Authority: KR
Inventors: 박현규
Original assignee: 박언수
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2015-06-24

Abstract

The present invention relates to an air coupler and a locking means for the socket portion of the automatic air coupler so that the socket and the plug are not separated during use, and the air hose, which is forcedly coupled to the rear end of the socket, So that the air hose and the spring are not separated from each other and a receiving space is formed in the packing chamber formed on the inner surface of the socket so that the deformed portion of the packing deformed by the compressed air is accommodated so that a reliable airtightness between the socket and the plug .

Description

Air Coupler {AIR COUPLER}

More particularly, the present invention relates to an air coupler, and more particularly, to an air coupler having a locking means for preventing a socket and a plug from being separated during use, and an air hose forcibly coupled to a rear end of the socket, So that the air hose and the coil spring are not separated from each other and a receiving space is formed in the packing chamber of the socket so that the deformed portion of the packing deformed by the compressed air is accommodated so that the air tightness Tight).

2. Description of the Related Art Generally, a machine or a tool (hereinafter referred to as a 'pneumatic device') using compressed air is connected to an air compressor (air compressor) using an air hose, and an air coupler Coupler is installed to separate the pneumatic device. When the plug and the socket are connected, the compressed air is delivered to the pneumatic device. When the plug and the socket are separated, the compressed air is blocked by the valve installed in the socket.

Since the air coupler is operated by high pressure compressed air, the air coupler portion is pulled to the floor of the workplace during use, or due to external pressure or impact such as being caught by objects in the workplace, The socket is instantly moved to an unspecified position when the socket is detached to cause a collision or shock, thereby leading to safety accidents and delays in operation.

In addition, the engagement screlock of the conventional plug is configured to be relatively long around 5.2 mm to prevent the socket and the plug from being separated from each other due to the movement of the sleeve installed in the socket. However, since a long stroke is required, The sleeve is moved when the sleeve is separated from the socket, but the grip portion gripped by the hand (finger) is small on the surface of the sleeve and the frictional force is small, which makes it difficult to move the sleeve.

1 to 4, the lock pin 4 is fixed to a portion of the body 3 of the socket 2 constituting the air coupler 1, and the lock pin 4 is mounted on the outer periphery of the socket 2, By forming the receiving groove 7 in the portion of the sleeve 6 to be resiliently received and allowing the locking pin 4 to be received, the plug 8 coupled to the socket 2 during use of the air coupler 1 "Fluid and gas coupling coupler" which is configured not to be separated is disclosed in Korean Patent Laid-Open Publication No. 10-2013-0091383 (published on Mar. 8, 2013).

The air coupler 1 moves the sleeves 6 resiliently biased by the springs 5 when the plugs 8 and the sockets 2 are engaged in the direction B of FIG. 9 is moved outwardly and then the plug 8 is coupled to the coupling hole 10 formed at the center of the socket 2 and then the sleeve 6 moved in the direction B is moved in the direction A in FIG. The plurality of balls 9 move in the center direction of the engaging hole 10 by the pressing portion 11 of the plug 6 so that the engaging groove 12 formed on the outer periphery of the plug 6 is engaged, (2) is achieved. Of course, an air hose (not the same) is connected or coupled to the plug 8 and the socket 2 portion.

3, the sleeve 6 is rotated in the direction C (or the direction D) in FIG. 4 in a state where the plug 8 is coupled to the socket 2 so that the locking groove 7 engages the locking pin 4 The movement of the sleeve 6 (the movement in the direction B in FIG. 2) is prevented and the locking is achieved, so that the separation of the plug 8 during use is prevented. However, And the spring 5 and the spring chamber 13 are exposed so that the foreign substances 14 such as dust, There is a problem in that smooth operation of the sleeve 6 and the spring 5 can not be performed because the small size stone including sand and soil is buried like various kinds of water and / or oil in the work space and flows into the spring chamber 13 .

In addition to the problem that various foreign substances 14 flow into the spring chamber 13 and the sleeve 6 does not move properly, the life of the sleeve 6 is shortened by oxidation of the components, It is difficult to move the sleeve 6 rearward and the locking groove 4 formed in the sleeve 6 is prevented from entering the locking pin 4, so that unlocking is difficult or difficult.

5, in the conventional air coupler, the end portion of the air hose 17 is tightly coupled to a portion of the inclined jaw 16 formed in the hose engaging portion 15 provided at the rear end of the socket 2, The air hose 17 is tightly adhered to and supported by the inclined jaws 16 by the pressing surface 19 of the fixture 18 fastened to the engaging portion 15 to prevent separation of the air hose 17, The coil spring 20 is coupled at one end to prevent the air hose 17 from being bent.

5, the coil spring 20 is simply fastened to the thread groove 21 formed on the inner peripheral surface of the rear end of the fastener 18, There is a problem that the spring 20 is easily loosened and separated from the fixture 18 while being rotated in the direction opposite to the fastening direction.

In the conventional air coupler, the packing 21 which is in close contact with the plug to keep the airtightness is provided inside the socket 2, but the airtightness is broken because it is not a structure that can withstand the compressed air caused by long- And short life span.

Korean Patent Publication No. 10-2011-0018326 (entitled: Pneumatic Safety Coupler, Published on February 23, 2011) Korean Patent Laid-Open Publication No. 10-2013-0091383 (Title of the invention: coupler for fluid and gas connection, published on Aug. 19, 2013)

The present invention aims to provide locking means in the socket portion of the air coupler to prevent separation of the socket and the plug during use.

Another object of the present invention is to prevent the air hose and the coil spring from being separated by allowing the air hose, which is detachably coupled to the rear end of the socket, to be pressed and supported by the coil spring.

Another object of the present invention is to provide a packing space formed in an inner circumferential surface of a socket so as to accommodate a deformed portion of a packing deformed by compressed air so that reliable airtightness between the socket and the plug is maintained .

The present invention can include an air coupler composed of a socket and a plug, a locking protrusion having a predetermined width protruding to the rear end of the socket, and an open locking recess formed in the body of the socket and receiving the locking protrusion have.

The engaging projection and the engaging groove may be two pairs to six pairs.

The present invention relates to an air compressor comprising an air coupler composed of a socket and a plug, a hose coupling part formed at a rear end of the socket, an air hose forcibly coupled to the hose coupling part, a tip end of a coil spring for pressing and supporting the air hose, So as to prevent separation of the air hose and the coil spring.

The present invention relates to an air bag comprising an air coupler composed of a socket and a plug, a packing chamber formed on an inner circumferential surface of the socket, and a receiving space formed in the packing chamber so that the deformation of the packing deformed by the compressed air is accommodated in the receiving space So that a reliable airtightness between the socket and the plug can be maintained.

According to the present invention, the plug and socket of the air coupler in use are not separated by the locking means constituted in the socket, so that safety accidents are prevented and the device can be used with confidence.

In the present invention, the locking protrusion formed on the sleeve protrudes to the rear end of the sleeve, and the locking groove formed in the body of the socket has an open structure, preventing foreign matter from entering during use, preventing malfunction, have.

In the present invention, since the latching groove formed in the body of the socket is an open structure, foreign matter introduced into the latching groove is removed by moving backward (backward) of the latching portion even if foreign substances or the like are introduced during use. It is possible to prevent shortening of the service life and the like.

The present invention has the effect of preventing the air hose and the coil spring from being separated while the air hose that is detachably coupled to the hose coupling portion is pressed and supported by a coil spring coupled to the hose coupling portion.

The present invention has the effect that the coupling stroke of the plug is formed to be about 2.9 mm shorter by shortening the coupling length so that the coupling and separation of the socket and the plug are quick and simple and dust and foreign matter are not introduced and the service life is prolonged .

The present invention has two to six pairs of locking means composed of a locking hole and a locking groove to quickly and easily separate the socket and the plug and prevent separation in other directions other than the predetermined direction, .

Since the present invention is an automatic coupling method, it is possible to assemble by pressing the socket and the plug, and it is possible to lock the socket or the sleeve by rotating clockwise or counterclockwise while holding the socket.

The present invention is very effective in that a part of a packing deformed by compressed air is accommodated in a receiving space formed in a packing chamber and a reliable (or stiff or rigid) airtightness between the socket and the plug is maintained. It is a useful design.

1 is a cross-sectional view of a socket portion of a conventional air coupler;
Fig. 2 is a plan view of a conventional air coupler in which a socket and a plug are separated; Fig.
3 is a plan view of a conventional air coupler in which a socket and a plug are engaged;
4 is a plan view of a lock state of a conventional air coupler;
5 is a cross-sectional view of a hose coupling part of a conventional air coupler.
6 is a plan view of one embodiment of the present invention;
Figure 7 is a plan view of a combined state of one embodiment of the present invention;
8 is a locked state plan view of one embodiment of the present invention.
9 is a perspective view of one embodiment of the present invention;
10 is a cross-sectional view of one embodiment of the present invention;
11 is a cross-sectional view of a hose coupling part of another embodiment of the present invention;
Figure 12: a sectional view of a packing portion of another embodiment of the present invention.
Figure 13: A sectional view of a packing portion of another embodiment of the present invention.
Figure 14 is a sectional view of the use state of the present invention.
Fig. 15: Cross section of the use state of the present invention Fig.
Figure 16 is a cross-sectional view of the present invention before the socket and the plug are engaged.
Fig. 17 is a cross-sectional view of the socket in a state in which the plug is engaged in the present invention;
Fig. 18: Reference figure in which two locking means are provided in the present invention.
Fig. 19: Reference figure in which six locking means are provided in the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the embodiments of the present invention, the same components as in the drawings are denoted by the same reference numerals as possible, and detailed descriptions of known configurations and functions are omitted so as not to obscure the gist of the present invention. May be different from what is actually embodied in the schematized drawings in order to facilitate the description of embodiments of the present invention.

6 to 17 are views showing an automatic air coupler 30 according to one embodiment of the present invention and another embodiment. A locking means 32 is formed in the socket 31 of the air coupler 30 and a socket 31 And the plug 33 are not separated during use and the air hose 35 which is detentively coupled to the hose engaging portion 34 at the rear end of the socket 31 is pressed and supported by the coil spring 36, 35 and the coil spring 36 and the packing chamber 63 formed on the inner circumferential surface of the socket 31 is provided with deformed portions 64b and 64c of the packing 64 deformed by the compressed air, Tight space between the socket (31) and the plug (33) is formed by forming the receiving space (65) (66)

The locking means 32 includes a locking protrusion 43 having a predetermined width W1 protruding rearward at a rear end portion of a sleeve 42 provided on the outer periphery of the socket 31, (45) of a predetermined width (W2) formed in the side wall portion (44) and sufficiently capable of accommodating the engagement protrusion (43), and a space of a predetermined width (W3) is formed therebetween.

The locking protrusion 43 and the locking groove 45 constituting the locking means 32 are composed of two pairs to six pairs. When the socket 31 and the plug 33 are separated from each other, The separation time is shortened. That is, when the socket 31, or the sleeve 42, or the socket 31 and the sleeve 42 are rotated and separated, the locking means 32 is rotated However, in the case of FIG. 19 composed of six pairs of locking means 32, the separation time between the socket 31 and the plug 33 is shortened because the locking means 32 is rotated at 60 degrees or less.

The stopper portion 43 is integrally formed with the sleeve 42 and moves together with the sleeve 42. The sleeve 42 is urged forward (in the direction of the plug 33) by the spring 55 provided in the spring chamber 54 It will be reborn.

The width W1 of the engaging protrusion 43 is slightly smaller than the width of the engaging groove 45 so as to be sufficiently received in the engaging groove 45 and the edge of the locking protrusion 43 is curved So that it can be easily coupled to the latching groove 45.

6 and 16, when the plug 33 is inserted into the coupling hole 62 of the socket 31 and then pushed in the direction of the socket 31, the designed air coupler 30 is an automatic air- . For example, as shown in FIG. 6, the engaging hole (43) and the engaging groove (45) constituting the locking means (32) When the plug 33 is pushed in the F direction after inserting the spring 33, the support ring 59 and the valve body 61, which have been resiliently urged by the spring 72 of the spring chamber 71, The ball 58 pushes the plurality of balls 58 inward (in the direction of the engaging hole 62) while the sleeve 42 which has been urged in the direction of the arrow E in Fig. The coupling between the plug 33 and the socket 31 is achieved as shown in Fig. 16 and the air is discharged by the plurality of packings 64, 70, Leakage is prevented. Tight sealing is maintained between the socket 31 and the plug 33 by the packing 64 and the accommodation spaces 65 and 66 to be described later.

The locking protrusion 43 constituting the locking means 32 is detached from the locking groove 45 by the advancement of the sleeve 42 as shown in Fig. 6 so that the sleeve 42 is rotated in the clockwise direction (G direction) (H direction). In this state, the sleeve 42 is rotated counterclockwise (H direction) as shown in FIG. 8 so that the engaging protrusion 43, which is integrally formed with the sleeve 42, The stopper portion 43 is engaged with the stopper portion 44 and the backward movement of the sleeve 42 is prevented as shown in FIG. 8, so that locking of the lock means 32 is achieved do.

Therefore, the plug 33 and the socket 31 are not separated from each other by an external pressure or the like during use of the air coupler 30, so that safety accidents are prevented, and it is possible to use them with confidence, and foreign materials, various kinds of water, And is prevented from being influenced or adhered to the spring chamber (43), the spring chamber (54) or the like, thereby preventing malfunction, oxidation, and the like.

The locking protrusion 43 is protruded rearward of the sleeve 42 and the locking groove 45 formed at a predetermined interval in the stop portion 44 of the socket 31 is completely 16 and 17, the spring chamber 54 of the sleeve 42 is not exposed. Therefore, foreign substances such as small-sized stones including dust, sand and soil and various moisture in the workplace And / or oil does not flow into the stopper portion 43 and its periphery and the spring chamber 54, thereby achieving smooth locking and unlocking of the locking means 32.

Even if some foreign substances such as small-sized stones including dust, sand and soil and various kinds of water and / or oil in the work area are partially introduced into the open engagement groove 45 during use of the air coupler 30, The oil and / or oil including the foreign matter which has flowed into the latching groove 45 by the engaging trough portion 43 accommodated while moving rearward is naturally removed in the opening direction, And the unlocking is achieved, and it is possible to prevent defective operation of the sleeve, oxidation of various components, and shortening of the service life.

The compressed air flowing into the socket 31 through the air hose 35 passes through the through hole 53 of the hose engaging portion 34 → the inflow hole 75 of the valve body 61 → the hollow portion of the valve body 61 Through the air hose connected to the hollow plug 35 of the plug 67 and the hollow plug of the plug 33.

When the socket 31 and the plug 33 are separated from each other and the sleeve 42 is pushed backward by using a hand or a finger, And the plug 33 are quickly and easily separated.

The sleeve 42 provided on the outer periphery of the socket 31 of the socket 31 in a state in which the locking protrusion 43 and the locking groove 45 constituting the locking means 32 are positioned on the straight line, 7, the locking protrusion 43 is received in the locking groove 45 and the locking means 32 is released from the locked state and the plurality of balls 58 are moved in the inward direction The pressing force of the ball 58 is released while the pressing portion 42a of the sleeve 42 which has been pushed in the direction of the arrow F direction 62 is moved in the F direction along the sleeve 42, The plug 33 is pushed in the opposite direction of the socket 31 while the ring 59 and the valve body 61 are advanced so that the socket 31 and the plug 33 are easily separated as shown in Figs.

Even if the pressing force of the sleeve 42 that has been pushed in the F direction is removed, the ball 58 moved in the outward direction (opposite direction of the engaging hole 62) as shown in Fig. 17 is prevented from moving forward The lock means 32 is kept in a locked state as shown in Fig. 7 and the compressed air flowing through the air hose 35 is leaked or leaked by the inward action (check valve function) of the valve body 61 .

11 is a partial cross-sectional view of the hose coupling portion 34 disclosed in another embodiment of the present invention. The end portion of the air hose 35 is forcedly engaged with the inclined surface 34a formed at the rear end of the hose coupling portion 34, A coil spring 36 is fastened and fixed to a threaded portion 79 formed on the inner periphery of the rear end of the hose fixing portion 77 and a threaded portion 78 formed on the inner circumference of the hose fixing hole 77 is formed on the outer peripheral surface of the rear end of the hose engaging portion 34 The distal end portion 36a of the coil coil spring 36 fastened and fixed to the hose fixing port 77 is pressed against the inclined surface 34a by pressing the outer circumferential surface of the air hose 35, Not only the separation of the air hose 35 is prevented, but also the separation of the coil spring 36 is prevented. That is, the air hose 35 and the coil spring 36 are in close contact with each other between the hose fixing port 77 and the inclined surface 34a, so that the air hose 35 and the coil spring 36 are securely engaged. The hose support portion 80 is a hose support portion that supports an end portion 35a of the air hose 35 joined past the inclined surface 34a of the hose engagement portion 34. [

12 and 13 show a modification in which packing spaces 63 and 65 are formed at one side of a packing chamber 63 formed at the front end of the valve body 61 and the deformed portions 64b of the packing deformed by the high- (Or stiff or tight) airtightness between the socket 31 and the plug 33 by allowing the plugs 66a, 66b, and 66c to be received, respectively.

12 is a sectional view showing a state in which a packing space 63 having a predetermined size opened in the direction of the plug 33 is formed at one side of the packing chamber 63, The packing space 63 is formed to have a predetermined size and the high pressure compressed air introduced into the packing chamber 63 through the gap X between the socket 31 and the plug 33, When the high pressure is applied to the groove 64a, the deformed portions 64b and 64c of the packing 64 are introduced into the accommodating spaces 65 and 66, respectively, Or rigid) air tightness is maintained.

14 shows a state in which the inner circumferential surface of the packing 64 is brought into close contact with the plug 33 while the deformation portion 64b of the packing deformed by the high-pressure compressed air is accommodated in the accommodating space 65 of Fig. 12, A tight (or stubborn, or rigid) airtight seal is achieved between the plug 31 and the plug 33.

15 shows a state in which the inner peripheral surface of the packing 64 is brought into close contact with the plug 33 while receiving the deformation portion 64c of the packing deformed by the high-pressure compressed air into the accommodation space 66 of Fig. A tight (or stubborn, or rigid) airtight seal is achieved between the plug 31 and the plug 33.

In the present invention, a recessed groove 47 is formed on the outer circumferential surface of the sleeve 42, so that the sleeve 42 can be firmly gripped when the sleeve 42 is moved in the direction F in FIG.

In the present invention, the length of the engagement of the plug 33 with the socket 31, for example, by forming the combined length of the inclined portion 51 of the plug 33 and the flat portion 52 about 2.9 mm, The socket 31 and the plug 33 can be easily combined and separated, and dust and foreign matter can not be basically introduced, thereby extending service life.

Reference numeral 46 denotes a guide portion for supporting the spring 55 and guiding the movement of the sleeve 42. Reference numeral 48 is a screw portion for fastening the air hose connected to the pneumatic device, And is coupled to the outside of the valve body 61.

The present invention described above is not limited to the embodiment and the accompanying drawings, and various substitutions, modifications and changes may be made without departing from the technical idea of the present invention, It is self-evident to those of ordinary skill.

(30) - Air Coupler (31) - Socket
(32) - locking means (33) - plug
(34) hose engaging portion (34a) - inclined surface
(35) - Air hose (36) - Coil spring
(36a) - tip (42) - sleeve
(42a) -pressure portion (43)
(44) - stop (45) - latching groove
(49) - coupling groove (53) - through hole
(54) (71) - Spring chamber (55) (72) - Spring
(58) - ball (59) - support ring
(61) - valve body (64) (70) (73) - packing
(64b) (66c) - packing deformations (65) (66)
(67) - hollow (75) - inflow hole
(77) - Hose clamp (78) (79) - Screw
(X) - gaps

Claims

An air coupler consisting of a socket and a plug;
A locking protrusion 43 protruding from the sleeve 42 of the socket 31 to a rear end thereof;
An open engaging groove 45 formed in the stop portion 44 of the socket 31 and receiving the locking projection 43;
.

An air coupler consisting of a socket and a plug;
A hose coupling portion 34 formed at a rear end of the socket 31;
An air hose 35 detachably coupled to the hose coupling portion 34;
A distal end portion 36a of a coil spring 36 for pressingly supporting the air hose 35;
A hose fixing port 77 for pressing and supporting the tip end 36a of the coil spring 36 to prevent separation of the air hose 35 and the coil spring 36;
.

An air coupler consisting of a socket and a plug;
A packing chamber 63 formed on an inner peripheral surface of the socket 31;
A receiving space (65) (66) formed in the packing chamber (63);
(64b) (64c) of the packing deformed by the compressed air is accommodated in the accommodating space, so that a reliable airtightness is maintained between the socket (31) and the plug (33) Coupler.

The method of claim 1,
And the engaging recess (43) and the engaging groove (45) are two pairs to six pairs.