KR101699371B1

KR101699371B1 - O-ring having a slip ring

Info

Publication number: KR101699371B1
Application number: KR1020150045653A
Authority: KR
Inventors: 안수현
Original assignee: 안수현
Priority date: 2015-03-31
Filing date: 2015-03-31
Publication date: 2017-01-25
Also published as: KR20160117845A

Abstract

The present invention relates to an O-ring having a slip ring having a slip ring inside to prevent leaking to the lever side due to twisting or deformation, and further, a rotation shaft of the ball valve can be smoothly operated.
A first body disposed between the housing of the ball valve and the handle shaft, and a pair of ball valve housings formed integrally with the outer peripheral surface of the first body at two points of an outer circumferential surface symmetrical with respect to the center point of the first body, A mounting groove formed in an inner circumferential surface of the first body or the second body or both and having an opening toward a center point of the first body or the second body, And a slip ring.

Description

O-RINGS WITH SLIP RINGS {O-RING HAVING A SLIP RING}

The present invention relates to an O-ring which is provided inside a housing of a ball valve to secure waterproofness,

And more particularly to an o-ring having a slip ring provided inside thereof to prevent leakage to the lever side due to twisting or deformation, and further to enable the rotation of the rotary shaft of the ball valve to be facilitated.

Since oil and lubricating oil are used in automotive engines, transmissions, etc., oil can leak and flow into other devices, which can lead to malfunctions and defects. Therefore, an O-ring is used to form an airtight structure do. That is, the engine uses a valve mechanism embedded in the cylinder head and engine oil to lubricate and cool the crankshaft, the piston, and the connecting rod contained in the cylinder block. In order to prevent the engine oil from leaking to the outside O-rings are installed around the shaft.

As shown in Fig. 1, the O-ring according to the prior art has an annular ring shape having a circular cross-section and a certain radius at the center point, and is made of synthetic resin such as rubber. Such an O-ring is installed between two objects or parts, thereby preventing the oil from leaking between the two objects.

These O-rings must be tightly adhered between two objects that are firmly assembled (or combined) in order to have sufficient sealing between the two objects. However, O-rings interposed between two objects and firmly adhered to each other cause abrasion due to friction between the two objects when relative motion of the two objects occurs. In addition, if the external force applied by the intention to assemble the O-ring rigidly in the process of assembling the parts is excessive, the O-ring may be torn and the damage may occur.

In order to solve the problems of the related art, in Patent Publication No. 2007-20985 (published on February 22, 2007), a grease receiving groove is formed in the upper and lower portions of the O-ring body to accommodate the grease therein, A technique for preventing damage is disclosed.

However, in this prior art, since the grease receiving grooves are formed on the upper and lower portions of the O-ring, there is a disadvantage that it is impossible to prevent wear on the side of the O-ring contacting the object. Also, even if a lubricant such as grease is used, there is a disadvantage that it is difficult for the mutual opposing action of two objects to smoothly occur on the friction surface due to the material properties of the O-ring made of materials such as rubber.

Therefore, in addition to the attempt to lower the friction coefficient of the O-ring simply by using a lubricant, the necessity of another attempt is reconsidered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

A slip ring is additionally provided in the inside of the O-ring so as to minimize the friction on the friction surface between the ball valve and the handle shaft or the ball.

Further, the slip ring is provided with protrusions to prevent the slip rings from loosening in the mounting grooves.

In addition, a recess is formed in the slip ring to provide a lubricant, thereby further reducing the friction between the slip ring and the handle shaft of the ball valve or the ball, thereby facilitating the rotation of the lever, And to be able to do so.

According to the present invention,

A first body disposed between the housing of the ball valve and the handle shaft, and a pair of ball valve housings formed integrally with the outer peripheral surface of the first body at two points of an outer circumferential surface symmetrical with respect to the center point of the first body, A mounting groove formed in an inner circumferential surface of the first body or the second body or both and having an opening toward a center point of the first body or the second body, And a slip ring.

Further, the slip ring has a protrusion protruding toward the inner wall of the mounting groove to be pressed against the inner wall of the mounting groove.

Further, the slip ring may further include a recess portion formed in the opening-side surface, and the recess portion may receive the lubricant.

The present invention having the above-

The slip ring provided inside the O-ring can reduce the friction on the friction surface between the handle shaft of the ball valve and the ball,

Further, since the slip ring does not idle in the mounting groove, it is possible to provide stability to the rotation operation of the lever,

In addition, a recess is formed in the slip ring to provide a lubricant, thereby further reducing the friction between the slip ring and the handle shaft of the ball valve or the ball, thereby facilitating the rotation of the lever, The effect can be achieved.

1 shows a general structure of a ball ball;
2 is an external view of the present invention.
3 is a detailed view of the first body.
4 is a first embodiment of the present invention (protruding portion).
5 is a second embodiment of the present invention (recess).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

The present invention is provided inside the housing (1, 2) of the ball valve (B) so as to ensure waterproofness, and a slip ring (40) is provided inside to prevent leakage to the lever side by twisting, To an O-ring having a slip ring (40) for enabling the rotation of the ball valve (B).

Hereinafter, an O-ring for a ball valve (B) having a slip ring (40) according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a general structure of a ball valve (B).

1, the ball valve B includes two housings 1 and 2 having an inner space in which balls 4 are seated, a handle shaft 3 coupled to one side of the two housings 1 and 2, And a ball (4).

The ball valve B having such a structure is configured such that the arrangement of the through holes formed in the balls 4 is changed according to the rotation operation of the handle shaft 3 and the pipes formed in the two housings 1 and 2, The passage is opened by the ball 4 and the passage is closed by the ball 4 when the other part of the ball 4 is not in the same direction as the pipe.

Therefore, in order to control the opening and closing of the ball valve B, the handle shaft 3 must be operated to rotate, and when the opening / closing cycle of the ball valve B is frequent,

The O-ring is interposed between the two housings (1,2) and the handle shaft (3). In order for the o-ring to perform a sufficient sealing function, the O- . However, when the relative movement of the housing 1, 2 and the handle shaft 3 occurs (the housings 1, 2 are in contact with the housing 1, 2 and the handle shaft 3) And the handle shaft 3 rotates), and wear occurs due to friction between the housings 1, 2 and the handle shaft 3. In addition, if the external force applied by the intention to assemble the O-ring firmly during the assembling process of the component is excessive, the O-ring may be damaged.

In order to solve this problem, the present invention has a slip ring 40 formed in the body of the O-ring to form a mounting groove 30 and to be inserted thereinto. Accordingly, the present O-ring can prevent the O-ring from being worn or damaged by friction at the housing (1, 2) and the rotation axis boundary without interfering with the rotation operation of the rotary shaft.

Next, Fig. 2 is an external view showing the outer shape of the o-ring. The O-ring will be described with reference to FIG.

1 and 2, the O-ring includes a first body 10 disposed between the housing 1 and the handlebar 3 of the ball valve B and a first body 10 disposed between the handlebar 3 and the first body 10. [ (B) housing (1, 2) and the ball (4) formed integrally with the outer circumferential surface of the first body (10) at two points of the outer circumferential surface symmetrical with respect to the center point, And a second body (20).

Each body of the present o-ring is preferably made of a synthetic resin such as rubber, soft plastic, PVC, or other sheet material.

2, the O-ring is formed on the inner circumferential surface of the first body 10 or the second body 20 or both of the first body 10 and the second body 20 and the center point of the first body 10 or the second body 20 And a mounting groove (30) having an opening (31) toward the base (30).

The mounting groove 30 formed in the first body 10 of the O-ring has an opening 31 toward the center of the first body 10 and has a ' 2 body 20, or may be formed on both.

The mounting groove 30 has a structure in which the slip ring 40 is inserted and the first body 10 (or the second body 20) has a width corresponding to the width of the opening 31 of the mounting groove 30, The surface of the slip ring 40 comes into contact with the handle shaft 3 without directly contacting the handle 3 (or the ball 4).

When the mounting groove 30 is formed only on the first body 10, the slip ring 40 is inserted into the first body 10 and contacts the rotary shaft,

When the mounting groove 30 is formed only on the second body 20, the slip ring 40 is inserted only into the second body 20 and contacts the ball 4, which can be determined by the user's choice It is also possible to insert the slip ring 40 into both the first body 10 and the second body 20. Therefore, in the following description, the case where the mounting groove 30 is provided in the first body 10 will be described. However, when the first body 10 or the second body 20 is described as being mixed It is also desirable to take into account that this is also for the same reason.

3 is a detailed view of the first body 10. FIG. 3, the slip ring 40, which is a key feature of the present invention, will be described in more detail.

3, the slip ring 40 inserted into the mounting groove 30 of the first body 10 has a width (width) formed by the upper surface 32 and the lower surface 33 of the mounting groove 30, It is preferable that the first body 10 is made of a material having a slight elasticity such as rubber or the like.

3 shows that the slip ring 40 is provided in the mounting groove 30 of the first body 10. The slip ring 40 may be made of a material such as plastic or PVC, The surface of the shaft 3 or the surface of the ball 4) to minimize the frictional force between the shaft 3 and the ball 4 to prevent the valve operation process from being hindered, it is preferably made of a nonflammable material having a small frictional coefficient such as Teflon. These Teflon materials are polyfluoroethylene-based synthetic fibers that are excellent in chemical resistance and heat resistance and are characterized in that they do not change their properties even in a wide temperature range. Furthermore, they are nonflammable, weather resistant, and non-tacky and have a low coefficient of friction.

Therefore, there is less friction between the handle shaft 3 and the ball 4 compared to the first body 10 and the second body 20 such as rubber, so there is no motion interference due to friction during the operation of the valve, The durability is not deteriorated due to abrasion or the like.

2 and 3, it is confirmed that the discharge groove 34 is provided at the upper and lower sides of the opening 31 of the mounting groove 30 of the first body 10 (including the second body 20) have. These discharge grooves 34 form an important feature together with the lubricant 45. The characteristics relating to the discharge groove 34 will be described below in addition to the characteristics of the lubricant 45. [

4 is a first embodiment related to the slip ring 40. [ A more detailed description of the slip ring 40, which is the core of the present invention, will be described with reference to FIG.

4, the slip ring 40 in this O-ring has protrusions 41 that protrude toward the inner wall of the mounting groove 30 and are pressed against the inner wall of the mounting groove 30 .

The protruding portion 41 rotates together with the handle shaft 3 when the handle shaft 3 is rotated (or when the ball 4 is applied to the second body 20 to perform opening and closing operations) There is a possibility that a wobbling phenomenon may occur. Even if the slippage does not occur due to the relative difference in the frictional force, the smooth rotation of the handle shaft 3 is disturbed. Therefore, the present invention solves this problem through the protruding portion 41 which is inserted into the inner wall of the mounting groove 30 I want to.

As shown in FIG. 4, it is preferable that the protrusions 41 are formed as point protrusions formed along the outer circumferential surface of the first body 10 at predetermined intervals. However, as shown in the right side of FIG. 4, And a line projection formed over the entire outer peripheral surface of the first body. However, it is preferable that it is a point projection formed at a predetermined interval in consideration of the fixation in the left and right directions as well as the fixing in the vertical direction with respect to the projection. In order to prevent the projection 41 from being separated, It is preferable that the protruding portion 41 is formed in a point projection shape in terms of preventing the key function of the protruding portion 41 from being lost.

4, the width of the protruding portion 41 is narrower toward the inner wall of the mounting groove 30. The protruding portion 41 is a slanting protrusion that is narrower toward the inner wall of the mounting groove 30, It is possible to more easily engage the first body 10 and the slip ring 40 when the inner wall of the mounting groove 30 of the protrusion 41 is inserted.

Fig. 4A shows a state in which the main O-ring is not coupled to the housings 1 and 2. Fig. At this time, it is preferable that the slip ring 40 is slightly deviated to the outside of the opening 31, and the degree of disengagement is as long as the length of the protruding portion 41 is preferable for ensuring waterproofness by perfect close contact.

Fig. 4 [B] shows a state in which the main O-ring is coupled to the housing 1, 2. At this time, it is preferable that the projection 41 of the slip ring 40 be in contact with the inner wall of the mounting groove 30. In this case, the slip ring 40 is also slightly deviated to the outside of the opening 31 do.

4 (C) shows a state in which the main O-ring is coupled to the housing 1 and the handle shaft 3 and the housing 1 and 2 are coupled. And the slip ring 40 is brought into contact with the surface of the handle shaft 3 so as to be in contact with each other. The protrusion 41 of the slip ring 40 is inserted into the first body 10 while being inserted into the first body 10 and fixed to the inner surface of the mounting groove 30 of the protrusion 41, The insertion of the slip ring 40 is completely fixed inside the first body 10 to prevent the slip ring 40 from loosening during the rotation of the handle shaft 3.

Next, Fig. 5 shows a second embodiment related to the slip ring 40. Fig.

Although the slip ring 40 is a Teflon material and has a low coefficient of friction, inevitable friction occurs when two objects move in mutually opposite directions in contact with each other. The present invention proposes that the slip ring 40 is provided with the recess portion 43 and the lubricant 45 is inserted into the recess portion 43 in order to minimize this.

5 (A), the slip ring 40 further includes a recess portion 43 formed on a surface of the opening 31 side, and the recess portion 43 is provided with a lubricant 45 Is accommodated.

5, it is preferable that the shape of the recess portion 43 is a groove formed at regular intervals along the inner circumferential surface of the first body 10, but in the embodiment shown on the right side of FIG. 5 It is also possible to provide a slit shape extending over the entire inner circumferential surface of the first body 10 as shown in FIG. However, since the use of an excessive lubricant deteriorates the airtightness of the present invention, and it is not preferable that the lubricant is leaked to other components such as the engine even though the lubricant is small in quantity, a groove- .

The recessed portion 43 may be provided as a through hole 44 extending to the inner wall of the mounting groove 30 as shown in Fig. 5 Since the lubricant 45 is stored in the mounting groove 30 or stored in the cylinder 44 when the slip ring 40 is inserted into the mounting groove 30 after storing the lubricant 45 in the mounting groove 30, It is possible to store a larger amount of lubricant than the embodiment provided.

The discharge groove 34 provided at the upper and lower sides of the opening 31 of the mounting groove 30 of the first body 10 (including the second body 20) The lubricant 45 contained in the lubricating oil 43 is discharged.

More specifically, when an external force is applied due to the assembly of the housing 1, 2 and the handle shaft 3, the upper surface 32 of the mounting groove 30 is deformed to be deformed downward, The lower surface 33 of the handle shaft 3 is deformed and deformed upward so as to partially cover the recessed portion 43. This is because the lubricant 45 appropriately contacts the slip ring 40 and the surface of the handle shaft 3 So that it can not be put into the boundary. Therefore, as an additional technical construction for solving such a problem, the o-ring introduces the discharge groove 34.

While the invention has been shown and described with reference to certain 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 invention as defined by the appended claims.

B: Ball valve 1, 2: Housing
3: Handle Axis 4: Ball
R: O-ring 10: First body
20: second body
30: mounting groove 31: opening
32: upper surface 33: lower surface
34: discharge groove
40: slip ring 41: projection
43: recessed portion 45: lubricant

Claims

A first body 10 disposed between the housings 1 and 2 of the ball valve B and the handle shaft 3;
A pair of ball valve housings 1 and 2 formed integrally with the outer circumferential surface of the first body 10 at two points of the outer circumferential surface symmetrical with respect to the center point of the first body 10, 4);
The first body 10 or the second body 20 or both the first body 10 and the second body 20 are formed on the inner circumferential surface of the first body 10 or the second body 20, (30); And
A slip ring (40) inserted into the mounting groove (30);
, &Lt; / RTI >
The slip ring 40 has a protruding portion 41 that protrudes toward the inner wall of the mounting groove 30 and is inserted into the inner wall of the mounting groove 30,
The protruding portion 41 is formed of a slanting protrusion which becomes narrower toward the inner wall side of the mounting groove 30 and is inserted into the inner wall of the mounting groove 30,
The slip ring (40) further includes a recessed portion (43) formed on a surface of the opening (31)
A lubricant 45 is accommodated in the recessed portion 43,
The recess portion 43 is a groove formed at regular intervals along the inner peripheral surface of the slip ring 40,
The first body 10 or the second body 20 or both 10 and 20 are provided on the upper and lower sides of the opening 31 so that the lubricant 45 And an exhaust groove (34) through which the exhaust gas is discharged.

The method according to claim 1,
Wherein the recess portion (43) is formed by a through hole (44) extending to the inner wall of the mounting groove (30).

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