KR20200094038A - tube fitting structure of line for purification - Google Patents

Abstract

The present invention relates to a tube fitting structure of a water purification line. According to the present invention, the tube fitting structure of a water purification line comprises a body, a tube, and a collet fixed to the body, wherein the body includes a tube insertion pipe, a separation space, and an outer pipe. According to the present invention, tube fitting can be simply performed without a separate tool.

Description

Tube fitting structure of line for purification}

The present invention relates to a fitting structure for connecting a tube forming a flow path in a water purification line of a product such as a water purifier or a refrigerator to an appliance, and more specifically, it is easy to assemble and disassemble easily without the need for a separate mechanical device or tool. It is related to the tube fitting structure of the water purification line.

In general, products such as water purifiers and refrigerators are formed with a water purification line inside the product to discharge water after being purified, and various types of filters including water valves for supplying water are installed to pass water through the filter. While the essence is made.

A fitting structure is applied to the water purifying line to connect various devices such as water valves and filters to each other. Since the leakage occurs when the fitting structure is vulnerable, the production line uses a press device to assemble the fitting connections to ensure robustness. While being assembled properly, it is possible to prevent leakage at the fitting connection.

However, because products such as water purifiers and refrigerators have a lot of accessories built in, it is impossible to perform all assembly in one line, so the parts for each part are modularized and provided, and then assembled in the final assembly line to complete product production.

However, in the final assembly line, the application of the press device is practically impossible because the final assembly of the water purification line is performed while the modular parts are inserted into the casing.

Therefore, an insert member such as a metal is inserted into the cap for fastening in the part for fitting by manual labor, and the fitting structure is adopted by pressing the cap while the tube is mounted and fitting in one touch.

However, since this fastening method is a structure in which a metal is embedded in a water purification line, not only does it not give the consumer a sense of trust, there is a problem that production is cumbersome, productivity decreases, and cost increases.

Therefore, the applicant of the present invention forms a guide groove to be curved on the outer circumferential surface of the tube connection portion as in Korean Patent No. 1359819 (2014.01.29.), and a guide protrusion is formed on the inner circumferential surface of the cap to guide the protrusion while the tube is inserted into the tube connection portion. A method has been proposed in which a fastening is made in a spiral structure while rotating along the guide groove.

However, in this type of fastening, the inner diameter of the spiral rotating part is very small, so that it is tightened by forcibly pressing a small diameter, and as a result, assembling according to the interference fit requires a lot of force, and uses tools, etc. There is a disadvantage that it is difficult to assemble practically without it.

In addition, since the assembly is made by forcing, there is a disadvantage that the connecting parts such as guide grooves or guide protrusions are crushed when assembling. After separation, if it is necessary to separate the tube from the appliance for leak testing or maintenance work If reassembly occurs, there is a risk of leakage at the connection site by crushing.

In particular, when the fitting structure is separated two or three times or more, as the assembly part is already crushed in the fitting fastening process, the connection part is loosened and there is a problem of random separation, so it cannot function as a fitting structure.

In addition, the cap is locked at the time when the tube fitting is completed. For the locking of the cap, there is a problem in that the binding state of the tube is loosened because the structure is locked while falling in the direction opposite to the direction in which the cap is inserted. There is a risk of leaks, and if it is repeatedly assembled as described above, it cannot function as a fitting structure.

The present invention is to solve the problems as described above, it is easy to insert the tube, but it is made to be firmly coupled in the final step, so that it can be easily fastened with a small force, as well as a water purification line that prevents damage to the connection part. It is an object of the present invention to provide a fitting structure of.

The present invention as a technical idea for achieving the above object, the body provided on the water purification line, and the tube constituting the water purification line is inserted into the body, and the tube is fastened and fixed to the body so as not to be separated in the state coupled to the body It comprises a collet, the body is formed to form a tube insertion tube protruding so that the tube is inserted, the tube is coupled, but the outer circumference of the tube insertion tube forms a spacer space and an outer tube to form the tube and collet insertion tube. To be inserted into the spaced part, and to secure the coupling radius between the body and the collet, a spiral guide hole is formed in the outer tube of the body, and a fastening protrusion is inserted into the guide hole in the collet's insertion tube to form a fastening protrusion. While the rotational radius is secured along the guide hole of the tube body, the fastening is guided from the outside, and the end of the insertion tube is spaced so that the tip of the insertion tube can be crushed inside the spacer space near the radius where the tube fastening is completed by the rotation of the collet. By forming the pressing surface so that the width gradually narrows at the end of the space portion, the tube fitting is made while the insertion tube is pressed and fixed to the outer surface of the tube.

In addition, the insertion tube forms an incision so that the tip of the insertion tube can be easily crushed, and the collet pulls the tube deeper in the state where the tube is inserted into the body at a certain depth inside the body of the insertion tube 340. By forming a protruding frame-shaped pressing protrusion for minimizing the frictional force with the outer surface of the tube when inserting the tube, it facilitates the initial entry of the tube while allowing the tube to be sealed, as well as forming the pressing protrusion in a spiral shape to insert the collet This is to make it easy and firmly fixed.

In addition, the locking means is provided so that the upper surface of the body and the lower surface of the collet knob are engaged with each other and fixed in order to further increase the bonding force in the state where the body and the collet are fastened and prevent any separation.

According to the water purifying line fitting structure of the present invention, the collet is rotated while the tube is inserted to a certain depth, and the tube is guided by the collet, and then the collet is closed at the distal end. The tube fitting is easily made with a small force without the need for a tool, and of course, the coupling is made on the outer surface of the tube and the coupling parts are fixed by complementing each other. .

1 is a perspective view showing a fitting structure of the water purification line of the present invention
Figure 2 is an exploded perspective view of Figure 1
Figure 3 is a partial cut-away perspective view of Figure 2
Figure 4 is a cross-sectional view of Figure 2
Figure 5 is a flow chart showing the fitting structure of the present invention
Figure 6 is a plan view showing the fitting structure of the present invention
Figure 7 is a cross-sectional flow chart showing the fitting structure of the present invention
8 is a partially enlarged view showing a structure in which the tube fastening of FIG. 7 is made;
9 is a perspective view showing a second embodiment of the collet of the present invention
10 is a cross-sectional view of FIG. 9
11 is a flow chart of the fastening protrusion is guided to the guide hole of the present invention
12 is a partially enlarged view showing a structure in which the tube is fastened by the collet of FIG. 9;
13 is a perspective view showing a third embodiment of the collet of the present invention
14 is a cross-sectional view of FIG. 13
15 is a perspective view showing the structure of the locking means of the present invention
16 is a perspective view showing a structure according to another embodiment of the locking means of the present invention
17 is a use state diagram showing the fastening structure of the locking means of Figure 16
Figure 18 is a cross-sectional view showing the fastening structure of the locking means of Figure 16

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The water purifying line fitting structure of the present invention is a structure mounted to connect the flow path of the water purifying line in a product such as a water purifier or a refrigerator, and the body 100 provided on the water purifying line as shown in FIGS. 1 to 4, It may be configured to include a tube 200 that is inserted into the body and constitutes a water purification line, and a collet 300 that is fastened and fixed to the body so as not to be separated while the tube is coupled to the body.

The body 100 is formed with a fastening end portion 100a for connecting to an internal part disposed on the water purification line on one side, and a tube fastening portion 100b for connecting the tube 200 constituting the water purification line on the other side. As it may be configured, in the present invention, the fastening end portion 100a is shown in the shape of a tube body, but the fastening end portion 100a is configured as a part of an internal part disposed on a water purification line, and the tube fastening portion 100b is attached to one side of the accessory. It may be configured to protrude.

The tube fastening part 100b provided in the body 100 may include a tube insertion tube 120, a spacer space part 140, an outer tube body 160, and a guide hole 180.

The tube insertion tube 120 may be configured to be formed of a tube body having a shape protruding from the center of the tube fastening part, and the tube insertion tube 120 in order to be tightly fixed to the inner surface of the tube while being inserted inside the tube 200 The outer diameter of may be formed to have a slightly larger diameter than the inner diameter of the tube.

At this time, the tube insertion tube 120 may be formed in a shape in which the diameter of the tip portion is formed to be small to facilitate the insertion of the tube 200 and gradually has a large diameter.

At this time, the length of the surface inclined at the tip of the tube insertion tube 120 is formed to correspond to the starting point where the tube 200 is inserted by the collet 300 described later with respect to the longitudinal direction of the tube insertion tube. Preferably.

And the outer periphery of the tube insertion tube 120 may be formed of a spaced space 140 so that the tube 200 and the insertion tube 340 of the collet 300 can be inserted, and the spaced space part 140 The outer periphery 160 is formed on the outer periphery, and may be configured as a wall to support the inserted tube 340 of the tube 200 and the collet 300.

In addition, a guide hole 180 having a spirally penetrated shape may be formed in the outer tube 160, and a fastening protrusion 380 inserted into the guide hole and guided along the path of the guide hole at the outer periphery of the insert tube 340 ) May be configured to protrude.

At this time, the guide hole 180 and the fastening protrusion 380 are arranged in a plurality of two or more along the circumference of the outer tube 160 and the insert tube 340, and are not eccentric when the collet 300 is inserted. It can be configured to be inserted stably in a maintained state.

Therefore, since the guide hole 180 is formed in the outer tube 160 of the body as described above, the rotation radius of the collet 300 is rotated at a relatively long distance from the central axis of rotation when the collet 300 is fastened. When sufficiently secured and the fastening protrusion 380 is guided by the guide hole 180, the contact pressure is minimized to rotate the collet 300 from the body 100 with less force so that the fastening is achieved.

In addition, by increasing the rotational radius of the fastening protrusion 380, the pressure between the fastening protrusion 380 and the guide hole 180 is minimized, so that the corresponding part is not crushed by the frictional force, and thus the shape can be maintained. Even when the fastening and separation are repeatedly performed several times, it is possible to prevent the fastening force from being lowered and maintain the same fastening force.

On the other hand, the collet 300 is formed of a cylindrical tube as described above, is in close contact with the outer periphery of the tube 200, but is inserted into the spacer 140 of the body 100 is inserted tube 340 is formed, The insertion tube 340 may be formed with a knob 350 for rotation of the collet 300 at the top.

Accordingly, the operator or the user can hold the knob 350 and rotate the collet 350 without requiring a separate tool so that the fastening of the tube 200 can be easily performed, and the body 100 also corresponds to the collet knob. A knob 150 may be formed on the outer periphery in a shape.

Therefore, as shown in FIGS. 5 and 6, after the tube 200 is first inserted into the insert tube 340 of the collet 300, the tip of the tube 200 is inserted into the tube tube of the body 100 ( 120), the collet 300 is firmly fastened while the collet 300 presses the tube 200 by rotating it using a knob while inserting and inserting the collet 300 into the spacer 140.

At this time, the body 100 may be formed with an entry portion 162 entering the guide hole 180 in the outer tube body 160, and an entry ramp 164 is formed in the entry portion 162 to form a fastening protrusion. (380) can be guided to the guide hole 180, even if the width of the entry portion 162 is formed to be relatively larger than the width of the fastening protrusion 380, even if the fastening protrusion 380 is not positioned in place When the collet 300 is rotated, the fastening protrusion 380 is guided to the guide hole 180 through the entrance part 162 and the entrance slope path 164 so that the fastening can be achieved.

At this time, the inner circumferential end of the separation space part 140 may be formed with a pressing surface 142 such that the outer periphery slopes inward so that the width gradually decreases, and the tube fastening is completed by the rotation of the collet 300. It is preferable that the pressing surface 142 is formed to be inclined by using a radius near the starting point.

Therefore, as the insertion tube 340 is gradually inserted by rotating the collet 300, as shown in FIGS. 7 and 8, the insertion tube 340 is self-elastic, and the tip is crushed inward, thereby gradually narrowing the inner diameter. , Due to this, the front end of the insertion tube 340 presses the outer surface of the tube 200 to make a solid connection.

At this time, the body 100 and the collet 300 are formed with knobs 150 and 350, respectively, so that the forcing can be made by holding the knob and rotating in the opposite direction, and the collet 300 is easily rotated without the need for a tool. The fitting structure of can be fastened or separated.

In addition, the insertion tube 340 is a cut-out portion 342 of a partially incised shape along the longitudinal direction is formed so that the tip of the insertion tube 340 can be easily manufactured to be crushed, this incision ( 342) may be made of a shape in which two or more incisions 342 are radially arranged in plurality around the central axis of the insertion tube.

Meanwhile, as shown in FIGS. 9 and 10, the collet 300 may have a pressing protrusion 360 formed on an inner surface of the insertion tube 340.

The pressure protrusion 360 may be provided to pull the tube deeper in a state in which the tube is inserted into the body at a certain depth, and in the state where the tube 200 is fully inserted, the pressure protrusion 360 covers the outer surface of the tube. By pressing, the outer surface of the tube is brought into close contact with the tip of the insertion tube 340 described above in an advantageous manner so that it can be double-fixed.

At this time, when the pressure protrusion 360 is first inserted into the collet 300, the pressure protrusion 360 minimizes the friction between the outer surface of the tube 200 and the pressure protrusion 360 and facilitates initial entry of the tube. It may be provided with a protruding frame (362) made of the shape of.

At this time, the protruding frame 362 is a guide surface 364 for guiding the initial entry of the tube 200 and the tube 200 is inserted into the insertion tube 340 of the collet 300 while the tube 200 is removed. It may be formed to include a traction surface 366 inclined to the lower side to prevent.

In addition, the guide hole 180 of the body 100 may be configured to be separated into a towing section 182 and a pressing section 184 as shown in FIG. 11.

The traction section 182 is a section for gradually inserting the insertion tube 340 into the spaced part 140 when the collet 300 is rotated, and is inclined in the form of a spiral to be inserted deeper as it rotates. Can be done.

The pressing section 184 is a section for pressing the outer surface of the tube 200 to the protruding frame 362 in a state in which the insertion tube 340 is inserted up to the inner tip of the spacer 140 to make a solid connection. While the insertion tube 340 of the collet 300 is rotated without being inserted anymore, the protruding frame 362 presses the outer surface of the tube 200 so that the inner diameter of the tube 200 closely adheres to the outer diameter of the tube insertion tube 120 As it can be made to be sealed, it can be securely fixed to prevent leakage even under high pressure.

That is, as illustrated in FIG. 12, the traction of the tube 200 is performed by the rotation of the collet 300 in the traction section 182, and the sealing of the tube 200 by the rotation of the collet 300 in the pressure section 184. This is done.

In addition, as shown in FIGS. 13 and 14, the pressing protrusion 360 may be formed such that the protruding frame 362 has a helical slope so that the collet can easily enter the body.

That is, after the insertion tube 340 is inserted in the traction section 182, when the collet 300 is rotated in the pressurized section 184, the protruding frame 362 is formed by spirally forming the protruding frame 362 Since the guide is spirally guided along the outer diameter of the tube 200, the collet 300 can be rotated with less force, and the tube 200 is further pressurized toward the inner side of the spacer 140. Since the body 100, the tube 200 and the collet 300 are more firmly fastened, the sealing effect can be further improved.

On the other hand, the body 100 and the collet 300 may be provided with a locking means that is locked or unlocked at the point where the tube fastening is completed by the rotation of the collet.

The locking means may be provided so that the stopper 190 is formed on the body 100, and the engaging portion 390 is respectively formed on the collet 300 to be engaged and fixed.

Then, the tube 200 is locked to the upper surface of the outer tube body 160 and the collet knob 350 as shown in FIG. 15 so that the locking can be performed without being flowed in the state in which the collet 300 is fastened to the body 100. Means may be formed, most preferably to form a stopper 190 on the upper end of the knob 150 formed on the body 100, as shown in Figures 16 to 18, of the knob 350 formed on the collet 300 An engaging portion 390 may be formed at the lower portion so as to be engaged with the stopper and fixed.

At this time, the design may be reflected so that the locking means to be formed on the knobs are engaged at a position where they are engaged with each other, that is, the knobs are arranged vertically up and down in a state where the fastening is completed.

100: body 100a: fastener end 100b: tube fastening
120: tube insertion tube
140: spaced apart portion 142: pressing surface
150: knob
160: external body 162: entry section 164: entry ramp
180: Guide hole 182: Traction section 184: Pressurization section
190: stopper
200: tube
300: collet
340: insertion tube 342: incision
350: Knob
360: pressurized projection 362: protrusion 364: guide surface
366: towing surface
380: fastening protrusion
390: interlocking

Claims (7)

The body 100 provided on the water purification line, the tube 200 constituting the water purification line fitted on the body, and the collet 300 fixed to the body so as not to be separated from the tube coupled to the body 300 ,
The body 100 is formed with a tube insertion tube 120 that is protruded so that a tube is inserted so that the tube 200 is coupled, but the outer space of the tube insertion tube 120 is spaced apart from the space 140 and the outer tube 160 ) Is formed so that the insertion tube 340 of the tube and collet is inserted into the spaced part,
A spiral guide hole 180 is formed in the outer tube body 160 of the body and a fastening protrusion 380 inserted into the guide hole is formed in the insert tube 340 of the collet to secure the fastening radius of the body and collet. The fastening protrusion is guided along the guide hole of the outer tube body,
A pressing surface 142 is formed at the end of the spacer 140 to gradually narrow the width so that the tip of the insertion tube can be crushed inside the spacer near the radius where the tube fastening is completed by the rotation of the collet. The tube fitting structure of the water purification line, characterized in that the inserted tube is pressed and fixed to the outer surface of the tube. The method of claim 1, wherein the insertion tube 340 is a water-tight tube fitting structure, characterized in that the incision (342) is formed so that the tip of the insertion tube can be easily crushed. According to claim 1 or claim 2, The collet (300) is formed on the inner surface of the insertion tube 340, a pressure protrusion (360) for pulling the tube deeper in a state in which the tube is inserted into the body at a certain depth. The pressure protrusion is formed of a tube fitting structure of a water purification line, characterized in that it is formed of a protruding frame 362 to facilitate the initial entry of the tube by minimizing the friction force with the outer surface of the tube when the tube is inserted. According to claim 3, The guide hole 180 of the body 100 is divided into a traction section 182 and a pressing section 184, the tube 200 is colleted in the pressing section after being pulled by the collet 300 Tube fitting structure of the water purification line, characterized in that the protruding frame (362) is pressed against the outer surface of the tube by the rotation of (300) to secure the fastening. According to claim 3, wherein the pressing protrusion 360 is a tube fitting structure of a water purification line, characterized in that the protruding frame (362) has a spiral inclination so that the collet can easily enter the body. The method according to claim 5, wherein the body 100 and the collet 300 are formed to correspond to each other and the locking/unlocking of the stopper 190 and the engaging portion 390 within a radius where the tube fastening is completed by the rotation of the collet. Features of water line fitting structure. The method of claim 6, wherein the body 100 is formed with a knob 150 for supporting the body when the collet rotates on the outer periphery, and the collet 300 has a knob 350 for rotating the collet on the outer periphery. Is formed, the tube fitting structure of the water purification line, characterized in that the stopper 190 and the engaging portion 390 are formed to engage with each other on the knobs 150 and 350 of the body and collet.

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