KR102632634B1 - Cap assembly and joint pipe including the same - Google Patents

Abstract

The present invention relates to a fixed cap assembly and a fitting pipe including the same. The fixed cap assembly according to an embodiment of the present invention is fastened to a connection portion of a main body where at least one pipe is connected, and connects the main body and the pipe. A fixing cap for fixing, a washer located inside the fixing cap, which compresses the sealing member 120 interposed between the main body and the pipe according to the fastening of the fixing cap, and whose diameter is contracted and restored in the radial direction, And a binding member that protrudes in a radial direction from the inner peripheral surface of the washer toward the outer peripheral surface of the pipe and includes a plurality of tooth-shaped protrusions that press the outer peripheral surface of the pipe according to contraction of the washer and secure the pipe. do.

Description

Fixed cap assembly and joint pipe for pipe connection {CAP ASSEMBLY AND JOINT PIPE INCLUDING THE SAME}

Embodiments of the present specification relate to a fixing cap assembly for pipe connection and a fitting pipe including the same, and more specifically, a fitting pipe connecting a plurality of pipes, and the main body of a facility such as a sewage tank or small manhole that requires pipe connection. It relates to a fixed cap assembly used to connect a pipe to a pipe and a fitting pipe including the same.

Pipes are mainly used to transport fluids (gas or liquid) or powder. The passage of fluid made up of pipes is called a ‘pipe’. Pipes that are installed considering the flow rate, physical properties, friction resistance, etc. of the fluid are called piping.

Generally, during piping work, at least one pipe, preferably a plurality of pipes, are connected to each other, and in this case, a pipe connection cap (hereinafter referred to as a fixed cap assembly) is mainly used.

For example, the fixed cap assembly can be used not only for joints connecting a plurality of pipes, but also for equipment products such as sewage drains or small manholes.

Joint pipes are mainly used to connect multiple pipes to change the direction of the pipe or to branch the pipe.

Additionally, a sewage drain or small manhole may have various shapes and structures depending on the purpose. Sewage collected in one place by a sewage drain or small manhole must be discharged to the outside through at least one branch pipe. In this case, a fixed cap assembly for pipe connection may be used.

According to the conventional method, to connect the pipe, one end of the pipe was inserted into the main body and then a cap was fastened to restrain the connection portion of the pipe. However, this conventional method had the disadvantage of being unsuitable for withstanding pressure under conditions of high water pressure above the set level and making it difficult to secure watertightness.

Recently, a method has been introduced in which a sealing member is installed between the main body (or pipe fitting body) and the pipe to connect the pipe, and when the cap is fastened, the cap directly pressurizes the sealing member to seal the pipe.

However, not only did the watertight function deteriorate under conditions of high water pressure at the set level, but the structure to strongly bind the pipes was insufficient, and the pipe connection work was complicated, resulting in poor work convenience.

The purpose of this specification is a fixed cap assembly that simplifies the connection work between the target body to which the pipe is to be connected (e.g., pipe, sewage drain, small manhole, etc.) and the pipe, while maintaining the connection of the pipe with strong binding force. is to provide.

Additionally, the purpose of the present specification is to provide a joint that connects a plurality of pipes using the above-mentioned fixed cap assembly.

The object of the present invention is not limited to the object mentioned above, and other objects and advantages of the present invention that are not mentioned will be more clearly understood by the embodiments of the present invention described below. Additionally, the objects and advantages of the present invention can be realized by the components and combinations thereof described in the claims.

According to one aspect of the present invention, a fixed cap assembly that connects a pipe to a pipe connection part such as a joint or a main body to which at least one pipe is connected, for example, a sewage drain or a small manhole, can be provided.

The fixing cap assembly according to an embodiment of the present invention is a fixing cap that is coupled to the main body end of the fitting and fixes the pipe to the main body, is located inside the fixing cap, and is connected to the main body when the fixing cap is fastened. A washer that compresses the sealing member interposed between the pipes and protrudes radially from the inner peripheral surface of the washer toward the outer peripheral surface of the pipe, and presses the outer peripheral surface of the pipe according to contraction of the washer to secure the pipe. Includes a binding member.

The binding member according to an embodiment of the present invention may be configured to include a plurality of tooth-shaped protrusions that are inserted and fixed in the circumferential direction at intervals from each other on the inner peripheral surface of the washer. As an example, tooth-shaped protrusions divided into 3 to 10 pieces are arranged circumferentially around the inner circumferential surface of the washer, so that when the washer is contracted, the pipe can be fixed by pressing the outer circumferential surface of the pipe.

Additionally, the binding member according to another embodiment of the present invention may be configured to include a ring-shaped body and a plurality of tooth-shaped protrusions.

The ring-shaped body is inserted into the inner peripheral surface of the washer and can be contracted and restored in response to the washer. Each of the plurality of tooth-shaped protrusions may have one end connected in the circumferential direction at a predetermined interval groove on the inside of the ring-shaped body, and the other end may protrude in a sawtooth shape toward the outer peripheral surface of the pipe.

Additionally, a plurality of spaced grooves may be formed between each of the plurality of tooth-shaped protrusions to be spaced apart from each other at a certain distance.

Here, each of the plurality of spacing grooves may have a circular groove shape.

If the shape of each gap groove is a circular groove shape, for example, each gap groove has a circular groove shape with a constant radius of curvature, when the ring-shaped body is contracted in response to the washer, a large load is applied to a specific area within the gap. This can have the effect of distributing the load evenly rather than concentrating it. As a result, even when the ring-shaped body made of a metal material is repeatedly contracted and restored, local deformation of the material can be prevented and the durability life is increased. Furthermore, improvements in shrinkage and restoration performance of the ring-shaped body can be expected.

Additionally, the ring-shaped body may be inserted into a circular fitting groove provided on the inner peripheral surface of the washer. The ring-shaped body is inserted into a circular fitting groove provided on the inner peripheral surface of the washer and can contract or restore in the radial direction together with the washer according to the contraction and restoration of the washer. Accordingly, the plurality of tooth-shaped protrusions connected to the inside of the ring-shaped body move in a direction in which the pressure is released or are pressed toward the outer peripheral surface of the pipe, making it possible to fix and release the pipe.

In addition, the binding member further includes an elastic connection member that provides elastic force necessary for restoration of the ring-shaped body when it is contracted.

The elastic connection member is connected at both ends to an opening where a portion of the circular arc section is cut off in the ring shape of the ring-shaped body, and may be made of an elastic material. As an example, the elastic connection member may use an elastic material band having a shape and length corresponding to the disconnected opening portion of the ring-shaped body.

Additionally, the tooth-shaped protrusion may have a sharp portion whose cross-section is reduced as it moves away from the ring-shaped body and moves toward the protruding direction. As an example, the pointed portion may have a sharp sawtooth shape that can bite and secure the outer peripheral surface of the pipe.

Additionally, one surface of the pointed portion may be formed to have a curved surface bent toward the connection direction of the pipe. One side of the pointed portion has a curved surface bent into a round shape, and as this curved surface is formed to face the connection direction of the pipe, interference between the pipe and the pointed portion is reduced when inserting the pipe, making insertion of the pipe easier. In addition, after connection between the pointed part and the pipe, the pipe can be fastened in the opposite direction to the direction in which the pipe is separated, thereby securing stronger bonding force.

Additionally, the plurality of tooth-shaped protrusions may be provided in the form of a plurality of pieces separated from each other.

In addition, the washer includes: a first annular body located in the front based on the fastening direction of the fixing cap, contracted and restored in the radial direction, and provided with the circular fitting groove; A second annular body is connected to the rear end of the first annular body based on the fastening direction of the fixing cap and has a reduced diameter compared to the first annular body, wherein the first annular body moves in a circumferential direction. It may include a plurality of gaps cut in a straight line at set intervals, and the outer peripheral surface of the first annular body may be further provided with a wedge-shaped protrusion protruding downwardly in a direction in which the fixing cap is fastened.

In addition, the fixed cap includes an annular cap body portion having a hollow space through which the pipe is inserted, wherein the cap body portion has an inner diameter size larger than the outer diameter size of the connection target pipe, and an outer circumference of the cap body portion. The surface may be provided with a plurality of circumferential protrusions that protrude and are spaced apart from each other in the circumferential direction, and the inner circumferential surface of the cap body may be provided with female threads that are screwed to male threads at both ends of the fitting body.

In addition, the main body includes: a pipe receiving portion formed at a connection part of the main body to which the pipe is connected and into which at least a portion of the pipe is inserted; a pipe support portion formed inside the pipe receiving portion and protruding to limit the insertion length of the pipe; a male thread portion formed outside the pipe receiving portion and screwed to the female thread portion of the fixing cap; and a sealing member accommodating portion that is formed to be stepped inside the pipe accommodating portion and accommodates the sealing member.

The washer is formed so that its tip enters toward the sealing member accommodating part when the fixing cap is fastened, and the sealing member is pressurized by the tip of the washer within the sealing member accommodating part when the fixing cap is fastened. and at least one elastic ring elastically deformed to expand the contact area between the main body and the pipe.

According to another aspect of the present invention, a joint using a fixed cap assembly is provided.

A fitting pipe according to an embodiment of the present invention includes a fitting pipe body connecting a plurality of pipes; A sealing member inserted into both ends of the fitting pipe body and sealing between both ends of the fitting pipe body and the pipe; And a fixing cap that surrounds the connection part of the pipe and is screwed to both ends of the fitting pipe body, and is located inside the fixing cap, and is located between the fitting main body and the pipe according to the fastening of the fixing cap. A washer that compresses the sealing member, shrinks and restores in the radial direction, and protrudes in the radial direction from the inner peripheral surface of the washer toward the outer peripheral surface of the pipe, pressing the outer peripheral surface of the pipe according to the contraction of the washer. It includes a fixing cap assembly including a fastening member including a plurality of tooth-shaped protrusions for fixation.

The joint pipe body is located at both ends of the length, and includes a plurality of pipe receiving portions into which a plurality of connection target pipes are inserted. and a connecting portion connecting the plurality of pipe receiving portions and having a smaller diameter than the plurality of pipe receiving portions, wherein a pipe support portion restricting insertion of each of the plurality of connection target pipes is provided at the center of the length of the connecting portion. It may be provided to protrude in a direction to reduce the inner diameter of the connection part.

The washer includes: a first annular body located in front based on the fastening direction of the fixing cap, contracted and restored in the radial direction, and provided with the circular fitting groove; A second annular body is connected to the rear end of the first annular body based on the fastening direction of the fixing cap and has a reduced diameter compared to the first annular body, wherein the first annular body moves in a circumferential direction. It may include a plurality of gaps cut in a straight line at set intervals, and the outer peripheral surface of the first annular body may be further provided with a wedge-shaped protrusion protruding downwardly in a direction in which the fixing cap is fastened.

According to the embodiments of the present specification, by connecting the pipes with strong binding force, it is possible to ensure watertightness and prevent the pipes from coming off even when the water pressure condition is high.

In addition, according to embodiments of the present specification, a fitting groove is provided on the inner peripheral surface of the washer, and a plurality of tooth-shaped protrusions, each in a divided form, are directly assembled into the fitting groove, or a plurality of tooth-shaped protrusions are formed into a ring-shaped body inserted into the fitting groove. A binding member for fastening a pipe can be formed by integrally connecting the tooth-shaped protrusions of the pipe.

Accordingly, according to the embodiments of the present specification, although it has a relatively simple structure, the shape of the washer and the binding member is not exposed to the outside of the fixing cap, so it has the advantage of excellent external appearance, and the washer shrinks simply by fastening the fixing cap. The binding member can strongly press the outer surface of the pipe, thereby improving the connection strength of the pipe.

Figure 1 is a perspective view showing a pipe connected to a main body using a fixed cap assembly according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing a pipe connected to the main body using a fixed cap assembly according to an embodiment of the present invention.
Figure 3 is a perspective view showing a fixed cap assembly according to an embodiment of the present invention from a first direction.
Figure 4 is a perspective view showing a fixing cap assembly according to an embodiment of the present invention from a second direction.
Figure 5 is a cross-sectional view of a fixed cap assembly according to one embodiment of the present invention.
Figure 6 is a view showing the coupling structure and shape between the washer and the binding member among the detailed configuration of the fixing cap assembly according to an embodiment of the present invention.
Figure 7 is a diagram showing an exemplary shape of a binding member among the detailed configurations of a fixing cap assembly according to an embodiment of the present invention.
Figure 8 is a diagram showing an exemplary shape of a binding member among the detailed configurations of a fixing cap assembly according to another embodiment of the present invention.
Figure 9 is a cross-sectional view showing a state before connecting a pipe to the main body using a fixed cap assembly according to an embodiment of the present invention.
Figure 10 is a cross-sectional view showing a state after connecting a pipe to the main body using a fixed cap assembly according to an embodiment of the present invention.
11 and 12 are perspective views showing a joint pipe connection structure including a fixed cap assembly according to an embodiment of the present invention.

Hereinafter, with reference to the drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification. Additionally, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. In adding reference numerals to components in each drawing, identical components may have the same reference numerals as much as possible even if they are shown in different drawings. Additionally, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description may be omitted.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, order, or number of the components are not limited by the term. When a component is described as being “connected,” “coupled,” or “connected” to another component, that component may be directly connected or connected to that other component, but there are no other components between each component. It should be understood that may be “interposed” or that each component may be “connected,” “combined,” or “connected” through other components.

Additionally, in implementing the present invention, the components may be subdivided for convenience of explanation, but these components may be implemented in one device or module, or one component may be implemented in multiple devices or modules. It may be implemented separately.

retaining cap assembly

Figure 1 shows a pipe 10 connected to a main body (e.g., sewage tank, small manhole, joint pipe, etc.) 110 using a fixed cap assembly according to an embodiment of the present invention.

Referring to FIG. 1, although not separately shown, a main body (e.g., sewage tank, small manhole, joint pipe, etc.) 110 to which the pipe 10 is connected is located on one side, and the pipe 10 is located on the other side. Located.

A fixed cap assembly 130 is located between the main body 110 and the pipe 10, and the fixed cap assembly 130 serves to quickly fasten the main body 110 and the pipe 10 in a simple manner.

The term 'main body' is used for the main body 110 for convenience of explanation, but specific examples may include various facilities to which the pipe 10 is connected, for example, a sewage drain, a small manhole, etc.

Additionally, the main body 110 may be a pipe of various types connected to change or diverge the flow direction of fluid between the plurality of pipes 10.

The fixed cap assembly 130 can connect the main body 110 and the pipe 10 under high water pressure conditions. In addition, it not only has high waterproof performance but also secures the connected pipe 10 with strong binding force, so that the pipe 10 Separation and separation can be prevented.

Additionally, the fixed cap assembly 130 can reduce complicated preliminary work for connecting the pipe 10 to the main body 110. For example, the fixing cap 140 must be fastened with the pipe 10 first partially inserted into the main body 110, or a separate washer 160 must be inserted in advance before fastening the fixing cap 140. Troublesome work can be eliminated.

In this way, when the fixed cap assembly 130 according to an embodiment of the present invention is used, the worker can easily and quickly perform pipe construction work for connecting the pipe 10 to the main body 110.

Figure 2 is a view showing an exploded view before connecting a pipe to the main body using a fixed cap assembly according to an embodiment of the present invention.

Referring to FIG. 2, the fixing cap assembly 130 according to an embodiment of the present invention includes a fixing cap 140, a washer 160, and a binding member 180.

The fixing cap 140 is coupled to the connection portion of the main body 110 to which the pipe 10 is connected, and serves to fix the pipe 10 to the main body 110.

Specifically, the fixing cap 140 surrounds the connection part of the pipe 10 and is screwed to the connection part of the main body 110.

The fixing cap 140 fixes between the main body 110 and the pipe 10 and is fastened to the main body 110, thereby restricting and maintaining the connection state of the pipe 10 connected to the main body 110, and the pipe 10 ) prevents separation and separation.

For example, the fixed cap 140 includes an annular cap body portion 141. The cap body portion 141 has an inner diameter size that is larger than the outer diameter size of the pipe 10 and has a size that allows the pipe 10 to be inserted inside.

A circumferential protrusion 142 is provided on the outer peripheral surface of the cap body portion 141. The circumferential protrusions 142 may protrude in a strip shape from the outer peripheral surface of the cap body portion 141 and are spaced apart from each other in the circumferential direction.

Additionally, a female thread portion 144 is provided on the inner peripheral surface of the cap body portion 141. The female thread portion 144 of the cap body portion 141 is screw-coupled with the male thread portion 112 provided in the main body 110.

Here, the main body 110, although not specifically shown, refers to the main body 110 of various equipment devices to which at least one pipe 10 is connected, for example, a sewage drain, a small manhole, and a fitting pipe.

Referring to FIG. 2, the main body 110 includes a connection part 115 to which the pipe 10 is connected, and a pipe receiving part 111 formed in the connection part 115 and into which at least a portion of the pipe 10 is inserted.

A pipe support portion 116 that limits the length of the pipe 10 to be inserted may be further provided inside the pipe receiving portion 111.

And the male thread portion 112 is formed on the outside of the pipe receiving portion 111 and is screwed to the female thread portion 144 of the fixing cap 140 to enable fastening of the fixing cap 140.

Meanwhile, a sealing member accommodating part 117 (see FIG. 9) that accommodates the sealing member 120 may be further provided inside the main body 110, more specifically, inside the pipe accommodating part 111.

The sealing member receiving portion 117 (see FIG. 9) is formed to be stepped inside the pipe receiving portion 11, and the sealing member 120 is interposed at a set position between the main body 110 and the pipe 10 to ensure watertightness. It allows you to have

The sealing member 120 is formed to be strongly compressed on the sealing member receiving portion 117 (see FIG. 9) upon fastening of the fixing cap 140 to provide a watertight function between the main body 110 and the pipe 10. do. To this end, the sealing member 120 may be made of a material capable of elastic contraction and restoration by external force. For example, the sealing member 120 may be made of a sealing rubber material.

The washer 160 is located inside the fixing cap 140, and compresses the sealing member 120 interposed between the main body 110 and the pipe 10 according to the fastening of the fixing cap 140 to ensure watertightness. to provide.

The sealing member 120 is strongly compressed between the main body 110 and the pipe 10 by pressure from the tip of the washer 160 when the fixing cap 140 is fastened to seal the gap. As a result, watertightness can be secured even under high water pressure conditions.

In addition, the washer 160 is coupled to the inside of the fixing cap 140 in a ring shape, and is contracted in the radial direction when the fixing cap 140 is fastened, and is restored in the radial direction when the fixing cap 140 is released. do.

For example, the washer 160 is located in the front based on the fastening direction of the fixing cap 140 and is located at the first annular body 161 that is contracted and restored in the radial direction, and at the rear end of the first annular body 161. It includes a second annular body 163 that is connected. In addition, the first annular body 163 includes a plurality of gaps 1612 cut in a straight shape at set intervals along the circumferential direction, and a fixing cap 140 is provided on the outer peripheral surface of the first annular body 163. A wedge-shaped protrusion 1611 is provided that protrudes downwardly in the fastening direction.

The binding member 180 includes a plurality of tooth-shaped protrusions 183 that protrude in the radial direction from the inner peripheral surface of the washer 160 toward the outer peripheral surface of the pipe 10.

Specifically, the plurality of tooth-shaped protrusions 183 protrude at a predetermined length toward the outer peripheral surface of the pipe 10 inserted through the inner diameter of the washer 160 when the washer 160 is contracted to strongly bind the pipe 10. It can have a sawtooth shape that can be used.

As an example, a plurality of tooth-shaped protrusions 183 may be provided in the form of divided pieces of about 3 to 10, and each tooth-shaped protrusion 183 is spaced apart from each other on the inner peripheral surface of the washer 160. At least one can be inserted and fixed and arranged in the circumferential direction. By having this shape, the plurality of tooth-shaped protrusions 183 can bite the outer peripheral surface of the pipe 10 when the washer 160 is contracted, thereby strongly fastening the pipe.

As another example, the binding member 180 may have a structure including a ring-shaped body 181 and a plurality of tooth-shaped protrusions 183. This will be described in detail with reference to FIGS. 6 to 8.

Figures 3 and 4 are perspective views showing the fixing cap assembly from the first and second directions according to an embodiment of the present invention, Figure 5 is a cross-sectional view briefly showing the fixing cap assembly, and Figure 6 is a coupling between the washer and the binding member. Shows structure and shape.

The fixing cap 140 surrounds the connection part of the pipe 10 and is screwed to the connection part 115 of the main body 110, and fixes the main body 110 and the pipe 10.

The fixed cap 140 includes an annular cap body portion 141. The annular cap body 141 has an inner diameter size larger than the outer diameter size of the pipe 10, and a circumferential protrusion 142 is provided on the outer circumferential surface of the cap body 141, so that the main body rotates in a set direction. It is formed to enable screw connection at (110).

For example, the circumferential protrusion 142 may protrude in a strip shape from the outer peripheral surface of the cap body portion 141. However, it is not necessarily limited to the shape shown and may have various modified shapes.

And the inner peripheral surface of the annular cap body 141 is provided with a female thread 144, and the female thread 144 is screwed to the male thread 112 (see Fig. 2) of the main body 110 (see Fig. 2). .

The fixing cap 140 further includes an inner diameter reduction portion 143.

The inner diameter reduction portion 143 is formed at the rear end of the annular cap body portion 141 in the fastening direction of the fixed cap 140, and has a shape in which the diameter is reduced to have an inner diameter size corresponding to the outer diameter size of the pipe 10. It can be formed step by step.

The inner diameter reduction portion 143 is formed to surround the pipe 10 connected to the main body 110 and supports the pipe 10, and is in contact with the second annular body 163 of the washer 160 to form a fixed cap. It serves to prevent separation and separation between (140) and washer (160).

The washer 160 is coupled to the inside of the fixing cap 140. The washer 160 compresses the sealing member 120 between the main body 110 and the pipe 10 when the fixing cap 140 is fastened.

For example, the washer 160 is formed so that the tip of the washer 160 enters the sealing member receiving portion 117 (see FIG. 9) when the fixing cap 140 is fastened.

The washer 160 is coupled to the inside of the fixing cap 140 in a ring shape. In particular, the washer 160 is contracted in the radial direction as the fixing cap 140 is fastened, and when the fixing cap 140 is unfastened, the radially contracted shape is restored to its original state. For this purpose, the washer 160 is located in the front based on the fastening direction of the fixing cap 140 and is composed of a first annular body 161 that is contracted and restored in the radial direction, and a first annular body 161 ) includes a second annular body 163 connected to the rear end of the. The second annular body 163 has a shape with a relatively reduced diameter compared to the first annular body 161.

The first annular body 161 includes a plurality of gaps 1612 cut in a straight shape at set intervals along the circumferential direction. The plurality of gaps 1612 enable radial contraction and restoration of the first annular body 161. That is, the first annular body 161 can be contracted or restored in the radial direction by reducing and expanding the plurality of gaps 1612.

A wedge-shaped protrusion 1611 is further provided on the outer peripheral surface of the first annular body 161.

The wedge-shaped protrusion 1611 refers to a wedge-shaped portion that protrudes from the outer peripheral surface of the first annular body 161 in a downward direction in the fastening direction of the fixing cap 140.

The wedge-shaped protrusion 1611 is pressed in the radial direction against the insertion guide surface 118 of the extended body 113 protruding from the main body 110 when the fixing cap 140 is fastened to the main body 110. Accordingly, when the fixing cap 140 is fastened, the washer 160 may be contracted so that the first annular body 161 is retracted toward the pipe 10.

The binding member 180 includes a plurality of tooth-shaped protrusions 183 that protrude in the radial direction from the inner peripheral surface of the washer 160 toward the outer peripheral surface of the pipe 10.

In one embodiment of the present invention, the binding member 180 includes a ring-shaped body 181, a plurality of tooth-shaped protrusions 183, and an elastic connection member 182. (see Figure 7)

Referring to FIG. 7, the ring-shaped body 181 refers to a ring-shaped metal member inserted into the inner peripheral surface of the washer 160 (see FIG. 6). The ring-shaped body 181 may be made of a soft metal material that can be bent by external pressure.

Since the ring-shaped body 181 is inserted into the inner peripheral surface of the washer 160 (see FIG. 6), which is contracted in the radial direction when the fixing cap 140 is fastened, in response to the contraction of the washer 160 (see FIG. 6), the washer ( 160, see FIG. 6) and can be contracted in the radial direction.

One end of each of the plurality of tooth-shaped protrusions 183 is connected in the circumferential direction at a predetermined interval on the inside of the ring-shaped body 181. The other end of each of the plurality of tooth-shaped protrusions 183 protrudes in the radial direction of the ring-shaped body 181 in a sawtooth shape.

At this time, a plurality of gap grooves 185 are formed between each of the plurality of tooth-shaped protrusions 183 and spaced apart from each other at a certain distance.

For example, each of the plurality of spacing grooves 185 may have a circular groove (or semicircular groove or arc-shaped groove) shape.

When the plurality of spacing grooves 185 have a circular groove shape with a constant radius of curvature, when the ring-shaped body 181 is contracted in response to the contraction of the washer 160 (FIG. 6), any specific spacing groove 185 It can prevent large loads from being concentrated on an area. In this way, as each circular groove-shaped gap 185 is formed between each of the plurality of tooth-shaped protrusions 183, when the binding member 180 is contracted or expanded (restored), pressure is applied to the binding member 180. The load can be distributed evenly. As a result, local damage or deformation of the metal binding member 180 can be prevented. In addition, durability can be expected to be improved due to shrinkage and restoration of the binding member 180.

Meanwhile, the ring-shaped body 181 may be inserted into the circular fitting groove 162 provided on the inner peripheral surface of the washer 160. Therefore, it is not necessary to assemble the plurality of tooth-shaped protrusions 183 in the form of separate pieces one by one into the washer 160, and the ring-shaped body 181 is formed by the washer 160 according to the contraction and restoration of the washer 160. It can shrink or recover in the radial direction. Accordingly, the plurality of tooth-shaped protrusions 183 connected to the inside of the ring-shaped body 181 can press the outer peripheral surface of the pipe 10 or appear in the direction in which the pressure is released, and can fix and release the pipe. there is.

The elastic connection member 182 serves to provide the elastic force necessary for restoration of the ring-shaped body 181.

The elastic connection member 182 may be an elastic band-shaped member whose both ends are connected to an opening where a portion of the circular arc section is cut off in the ring shape of the ring-shaped body 181. For example, the elastic connection member 182, unlike the ring-shaped body 181 made of a metal material, is more elastic and flexible and is not easily broken, but is a material that can be stretched as needed or restored to its initial shape when external force is released after stretching. can be used. For example, the elastic connection member 182 may be made of a material such as rubber.

In one embodiment of the present invention, when the fixed cap assembly 130 is rotationally coupled to the main body 110, the washer 160 contracts and the ring-shaped body 181 contracts in the radial direction. As the ring-shaped body 181 contracts in the radial direction, both ends of the elastic connection member 182 are pressed, causing the elastic connection member 182 to contract.

Conversely, when the fixed cap assembly 130, which is rotatably coupled to the main body 110, is separated from the main body 110, the washer 160 expands. When the washer 160 is expanded, the elastic force of the elastic connection member 182 is transmitted to the connection portion between the ring-shaped body 181 and the elastic connection member 182. Due to this elastic force, the contracted ring-shaped body 181 expands. As the ring-shaped body 181 expands, the tooth-shaped protrusion 183 does not press the outer peripheral surface of the pipe 10, and the pipe 10 can be easily separated from the main body 110.

Meanwhile, the tooth-shaped protrusion 183 may have a pointed portion 1831 whose cross-section is reduced as it protrudes away from the ring-shaped body 181. The pointed part (1831) refers to the sawtooth-shaped tip that can be fixed by sharply biting the outer circumferential surface of the pipe.

At this time, one surface of the pointed portion 1831 may be formed to have a curved surface 1832 bent toward the pipe connection direction (W1, see FIG. 5).

When one side of the pointed portion 1831 has a curved surface 1832 bent into a round shape, and this curved surface 1832 is formed facing the connection direction of the pipe (W1, see FIG. 5), the pipe 10, FIG. When inserting (see 10), friction or interference between the pipe and the pointed portion (1831) may be reduced. As a result, insertion of the pipe 10 becomes easier and damage to the surface of the pipe 10 can be reduced.

In addition, after connection between the pointed part 1831 and the pipe 10, the pointed part 1831 can be directed in the opposite direction to the direction in which the pipe 10 is separated, thereby preventing separation and separation of the pipe 10. It is possible to bind pipes with higher strength.

Meanwhile, in another embodiment of the present invention, the binding member 180 may include only a plurality of tooth-shaped protrusions 183a to 183h, some of which are directly inserted and fixed to the inner peripheral surface of the washer 160. (See Figure 8) In this case, the plurality of tooth-shaped protrusions 183a to 183h are provided in the form of a plurality of pieces separated from each other.

Each tooth-shaped protrusion (183a to 183h) may be made of a soft metal material that can be bent by external pressure.

Additionally, a circular or semicircular spacer groove 185 is formed in each of the tooth-shaped protrusions 183a to 183h. The load applied to the binding member 180 can be evenly distributed when the binding member 180 is contracted or expanded (restored) by the spacing grooves 185 formed in each of the tooth-shaped protrusions 183a to 183h. As a result, local damage or deformation of the metal binding member 180 can be prevented. In addition, durability can be expected to be improved due to shrinkage and restoration of the binding member 180.

8 shows an embodiment in which the binding member 180 includes eight tooth-shaped protrusions 183a to 183h, but the number of tooth-shaped protrusions included in the binding member 180 may vary depending on the embodiment. Each of the tooth-shaped protrusions 183a to 183h may be inserted and fixed into the inner peripheral surface of the washer 160 and protrude in a sawtooth shape.

Figure 9 is a cross-sectional view showing the state before connecting the pipe to the main body using a fixed cap assembly according to an embodiment of the present invention, and Figure 10 is a cross-sectional view showing the state after connecting the pipe to the main body using the fixed cap assembly. am.

First, the fixed cap assembly 130 is partially fastened to the main body 110 (see FIG. 9). Next, the pipe 10 is inserted into the main body 110, and fastening of the fixed cap assembly 130 is completed (see FIG. 10).

Referring to FIG. 9, before inserting the pipe 10, the sealing member 120 is inserted into the main body 110. When fastening the fixing cap 140, the washer 160 enters the interior of the main body 110 in the fastening direction together with the fixing cap 140 and presses the sealing member 120.

The sealing member 120 includes an elastic ring 121 and an elastic band 123. The elastic ring 121 is accommodated in the sealing member receiving portion 117, and is pressed by the tip of the washer 160 when the fixing cap 140 is fastened. The elastic band 123 is provided to protrude from the elastic ring 121 in a band shape, and the elastic ring 121 may be deformed by the pressure of the washer 160 to increase the contact area. As a result, watertight function can be secured even under high water pressure conditions.

Referring to FIG. 10, after the pipe 10 is completely inserted into the main body 110, fastening of the fixing cap 140 is completed.

The main body 110 refers to at least a part of the device 101, such as various facilities to which the pipe 10 is connected, for example, a sewage drain, a small manhole, etc. The pipe 10 is connected to and fixed to the main body 110.

While the fixing cap 140 is fully fastened, the first annular body 161 of the washer 160 is contracted in the radial direction in close contact with the insertion guide surface 118. Accordingly, the binding member 180 fixed to the fitting groove 162 of the first annular body 161 is contracted in the radial direction, and the tooth-shaped protrusion 183 strongly bites the outer peripheral surface of the pipe 10 to form the pipe 10. ) fixes the connection state.

The insertion guide surface 118 of the main body 110 serves to contract the washer 160 and the binding member 180 in the radial direction according to the progress of fastening of the fixing cap 140, and as a result, the tooth-shaped protrusion 183 is formed. It pressurizes the outer peripheral surface of the pipe (10).

joint pipe

11 and 12 are perspective views showing a joint pipe connection structure including a fixed cap assembly according to an embodiment of the present invention.

The fitting pipe according to an embodiment of the present invention includes a fitting pipe main body 310, a plurality of sealing members 120, and a plurality of fixing cap assemblies 130.

The joint body 310 extends or changes the flow direction by connecting a plurality of pipes 10 at both ends, and is not necessarily limited to the shape shown, and has various shapes such as an 'L' shape and a 'Y' shape. You can have

The fitting body 310 includes a pipe receiving portion 311 in which the pipe is accommodated, and a male threaded portion 312 that is screw-coupled with the female threaded portion 144 formed on the inner peripheral surface of the fixing cap 140. In addition, an extension body 113 is formed at the outer end of the male thread portion 112 and protrudes by extending a predetermined length in the direction of both ends of the joint body 310.

In addition, the fitting pipe body 310 includes a connection part 315, which is a tubular body that connects the plurality of pipe receiving parts 311. The connection portion 315 has a tubular shape with a smaller diameter than the plurality of pipe receiving portions 311. The length of the connection portion 115 is not necessarily limited to the shape shown, and may have a length longer or shorter than this. The connection portion 115 may have various shapes, such as an 'L' shape or a 'Y' shape, depending on the embodiment.

The plurality of sealing members 120 are inserted into both ends of the fitting pipe body 310 and seal between both ends of the fitting pipe body 310 and the plurality of pipes 10.

And the fitting pipe according to the embodiment of the present invention includes a plurality of fixing cap assemblies 130 that connect and fix the fitting pipe body 310 and the plurality of pipes 10. The fixing cap assembly 130 includes a fixing cap 140, a washer 160, and a binding member 180.

Here, the description of the fixing cap assembly 130 will be omitted since it overlaps with the content previously described with reference to FIGS. 1 to 10.

As described above, according to embodiments of the present invention, the pipes are connected with strong binding force, so there is an advantage in ensuring watertightness and preventing the pipes from coming off even when the water pressure is high.

In addition, according to embodiments of the present invention, by connecting the pipes with a strong binding force, it is possible to ensure watertightness and prevent the pipes from coming off even when the water pressure is high.

In addition, according to embodiments of the present invention, a fitting groove is provided on the inner peripheral surface of the washer, and a plurality of tooth-shaped protrusions each in a divided form are directly assembled into the fitting groove, or are attached to a ring-shaped body inserted into the fitting groove. A binding member for fastening a pipe can be formed by integrally connecting a plurality of tooth-shaped protrusions. Accordingly, according to the present invention, although it has a relatively simple structure, it has the advantage of excellent external appearance because the shapes of the washer and the binding member are not exposed to the outside of the fixing cap, and the washer is contracted by simply fastening the fixing cap and the binding member is connected to the pipe. The outer peripheral surface of the pipe can be strongly pressurized, thereby improving the connection strength of the pipe.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained in the above description of the embodiments of the present invention, it is natural that the predictable effects due to the configuration should also be recognized.

10: pipe 110: body
111: pipe receiving part 112: male thread part
113: extension body 115: connection part
116: pipe support 117: sealing member receiving portion
118: Insertion guide surface 120: Sealing member
121: elastic ring 123: rubber band
130: fixed cap assembly 140: fixed cap
141: cap body 142: circumferential projection
143: inner diameter reduction part 144: female thread part
160: Washer 161: First annular body
1611: wedge-shaped protrusion 1612: gap
162: Fitting groove 163: Second annular body
180: Binding member 181: Ring-shaped body
182: elastic connection member 183: tooth-shaped protrusion
1831: Acute part 1832: Curved surface
185: Spacing groove (or circular groove) 310: Joint pipe body
311: pipe receiving part 312: male thread part
313: extension body 315: connection part
316: pipe support portion 317: sealing member receiving portion
318: Insertion guide surface

Claims (12)

A fixing cap coupled to the main body end of the fitting and fixing the pipe to the main body;
a washer located inside the fixing cap and compressing the sealing member interposed between the main body and the pipe when the fixing cap is fastened; and
It protrudes in a radial direction from the inner peripheral surface of the washer toward the outer peripheral surface of the pipe, and includes a binding member that secures the pipe by pressing the outer peripheral surface of the pipe according to contraction of the washer,
The binding member is,
plural denticles; and
It is inserted into the inner peripheral surface of the washer and includes a ring-shaped body that contracts and restores in the radial direction in response to the washer,
Each of the plurality of tooth-shaped protrusions,
One end is connected in the circumferential direction at a predetermined interval groove on the inside of the ring-shaped body, and the other end protrudes in a sawtooth shape toward the outer peripheral surface of the pipe.
Fixed cap assembly.
delete According to paragraph 1,
Characterized in that a plurality of spaced grooves are formed between each of the plurality of tooth-shaped protrusions to be spaced apart from each other at a certain distance.
Fixed cap assembly.
According to paragraph 3,
Each of the plurality of spacing grooves is,
Characterized by having a circular groove shape
Fixed cap assembly.
According to paragraph 1,
The ring-shaped body,
Characterized in that it is inserted into a circular fitting groove provided on the inner peripheral surface of the washer.
Fixed cap assembly.
According to clause 5,
The binding member is,
It further includes an elastic connection member that provides the elastic force necessary for restoration when the ring-shaped body is contracted,
The elastic connection member is,
Among the ring shapes of the ring-shaped body, both ends are connected to an opening where some arc sections are cut off, and are made of an elastic material.
Fixed cap assembly.
According to paragraph 1,
The plurality of tooth-shaped protrusions are,
It has a pointed portion whose cross-section is reduced as it moves away from the ring-shaped body and in the protruding direction,
One surface of the pointed portion is formed to have a curved surface bent toward the connection direction of the pipe.
Fixed cap assembly.
According to paragraph 1,
The plurality of tooth-shaped protrusions
Supplied in multiple separate pieces
Fixed cap assembly.
According to paragraph 1,
The washer is
a first annular body located in front based on the fastening direction of the fixing cap, contracted and restored in the radial direction, and provided with the circular fitting groove;
It includes a second annular body connected to the rear end of the first annular body based on the fastening direction of the fixing cap and having a reduced diameter compared to the first annular body,
The first annular body includes a plurality of gaps cut in a straight shape at set intervals along the circumferential direction,
Characterized in that the outer circumferential surface of the first annular body is further provided with a wedge-shaped protrusion protruding downward and inclined in the fastening direction of the fixing cap.
Fixed cap assembly.
According to paragraph 1,
The fixed cap is,
It includes a ring-shaped cap body portion having a hollow space through which the pipe is inserted,
The cap body portion has an inner diameter size larger than the outer diameter size of the pipe to be connected,
The outer peripheral surface of the cap body is provided with a plurality of circumferential protrusions that protrude from each other in the circumferential direction,
Characterized in that the inner peripheral surface of the cap body portion is provided with a female screw portion that is screwed to the male screw portion of the main body.
Fixed cap assembly.
According to paragraph 1,
The main body is,
a pipe receiving portion formed at a connection portion of the main body to which the pipe is connected and into which at least a portion of the pipe is inserted;
a pipe support portion formed inside the pipe receiving portion and protruding to limit the insertion length of the pipe;
a male thread portion formed outside the pipe receiving portion and screwed to the female thread portion 144 of the fixing cap; and
a sealing member accommodating portion formed to be stepped inside the pipe accommodating portion and accommodating the sealing member;
A fixed cap assembly comprising a.
According to clause 11,
The washer is formed so that its tip enters toward the sealing member receiving portion when the fixing cap is fastened,
The sealing member includes at least one elastic ring that is elastically deformed to expand the contact area between the main body and the pipe by pressing the tip of the washer within the sealing member receiving portion when the fixing cap is fastened.
Fixed cap assembly.

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