TW202130937A - Pipe joint which has enhanced sealing effect and better clamping and locking effect between pipe member and the pipe joint within the tolerance range - Google Patents

Abstract

The invention is a pipe joint which has a hollow body. One end of the body is protruded outward to form a mounting part and disposed with an opening communicated with the inside of the body. The mounting part is provided with a restraining member and a seal ring adjacent to the opening. The ring portion of the restraining member and the sealing ring are arranged side by side and abutted against each other, the inner side of the ring portion is protrudingly formed with a plurality of teeth, and each of the teeth has a first engaging tooth and a second engaging tooth with different lengths. The overall structure is simple with few components. When the pipe member is inserted into the body, the sealing ring is deformed to tightly abutted and engagingly positioned with the teeth of the restraining member. Since the transferred fluid will cause pressure changes in the pipe member and the body, the two components can move back and forth slightly to form a pressed or loose state, so as to maintain the required sealing effect of the seal ring and avoid elastic fatigue. Moreover, when the pipe member and the pipe joint within the tolerance range are combined, it still has a better clamping and locking effect.

Description

Pipe joint

The invention relates to a pipe fitting assembly, especially a pipe fitting that can effectively fix pipe fittings within a tolerance range and used as a connection between pipe fittings or a pipe joint for closing the ends of the pipe fittings.

The prior art pipe joint can be used in a pipeline system that provides fluid transmission. The pipeline system is connected by a plurality of pipe fittings or the ends of the pipe fittings are closed according to the pipeline design to provide fluid transmission in the pipeline system. flow.

As shown in Figure 11, the pipe joint has a hollow body 50. In order to provide a single pipe or to provide the assembly of more than one pipe, the body 50 has at least one opening, and a ring seat portion 501 and A connecting portion 502 is provided with a sealing ring 51 at the position of the ring seat portion 501, the sealing ring 51 abuts against the ring seat portion 501, and an assembling member 54 in a ring shape is provided, and a fixing ring 55 is penetrated inside the sealing ring 51 , There is also a restraining member 53 and a fastener 52 combined in sequence. When the assembly 54 is installed on the coupling portion 502 of the body 50, the sealing member 52 is pressed against the sealing ring 51, and the tube 60 is inserted into it during use. The main body 50 is positioned inside. At this time, the tube 60 is positioned by the teeth of the restraining member 53 against and biting, and the assembly of the tube joint and the tube 60 can be completed.

Since the sealing ring 51 provided inside the pipe joint in the prior art is unable to move due to the combination and positioning of the sealing member 52, and the pipe member 60 is locked and positioned by the restraint member 53, any displacement between the pipe member 60 and the pipe joint cannot be generated for a long time, This will cause the sealing ring 51 located between the ring seat portion 501, the sealing member 52 and the outer wall surface of the pipe 60 to be often resisted by a certain external force. After the pipeline system is used for a period of time, the sealing ring 51 will be elastically fatigued, making The sealing effect between pipe joints and pipe fittings is reduced, which will cause leakage and other problems in serious cases;

Furthermore, after the pipe 60 is manufactured, it is marked as an outer diameter within the specified tolerance range. The actual outer diameter of the pipe 60 product can be larger or smaller than the marked size, and the pipe 60 is inserted into the body 50 When combined with each other, the actual outer diameter of the pipe 60 with an actual outer diameter greater than the marked size and the actual outer diameter of the pipe 60 with an actual outer diameter smaller than the marked size will make the offset angles formed by the teeth of the restraining member 53 different, resulting in a blocking force for each teeth to bite and position. Different, and even cause the problems and shortcomings of unable to effectively bite and fix;

In addition, since the pipe joint in the prior art is constructed of a plurality of components that can be assembled together with the pipe, it has the disadvantages of complicated structure and high cost.

In view of the problems and shortcomings in the implementation of the prior art, the present invention is re-created in the inner ring chamber of the hollow body. The pressure-changing pipe can be slightly displaced relative to the body, so that the restraining member reciprocally presses against the sealing ring, which can prevent the elastic fatigue of the sealing seal and ensure the tightness between the pipe joint and the pipe. Moreover, after the restraining member has a plurality of unequal-length clamping teeth and the pipe fitting within the dimensional tolerance range, the fixing effect can be improved due to the use of various unequal-length clamping teeth and the outer wall surface of the pipe fitting to be fixedly combined.

In order to achieve the aforementioned purpose of the invention, the technical means used in the present invention is to provide a pipe joint, which includes a body, a restraint and a sealing ring; the body is a hollow body with an opening at one end and an opening at the other end. A closed end, the body adjacent to the opening forms a mounting portion, the mounting portion protrudes radially outward from the body and forms an inner ring chamber inside, the inner ring chamber communicates with the opening, and the inner ring The chamber is an annular space, the two side walls of which are respectively a first abutment surface and a second abutment surface, the opening is located at the first abutment surface; the restraint member is a hollow ring-shaped sheet body, It has a ring portion, the ring portion protruding from the inner edge to form a plurality of tooth portions, each tooth portion includes a first tooth and at least one second tooth, the first tooth is protruding from the ring portion The length is greater than the length of the second clamping tooth protruding from the ring portion; the sealing ring is a hollow ring body, which is arranged in the inner ring chamber of the mounting portion side by side with the restraining member, and the restraining member is located adjacent to the At the second abutting surface, one side of the sealing ring is adjacent to the first abutting position, and the other side is abutting against the ring portion of the restraint member.

In the pipe joint, each of the teeth of the restraining member is arranged at intervals and sequentially arranged in a circle, the first clamping tooth and the second clamping tooth protrude obliquely toward the central extension line of the restraining member, and the protrusions The extension direction is away from the opening position.

In the pipe joint, the closed end of the main body is formed with another opening, and further includes another restraint member and another sealing ring; the main body is formed with another mounting portion adjacent to the other opening, The other mounting portion protrudes radially outward from the main body and forms another inner ring chamber inside, the other inner ring chamber communicates with the other opening, the other restraining member and the other sealing ring In order to be arranged side by side in the other inner ring chamber, the other restraining member is a hollow ring-shaped sheet and has a ring portion, and the ring portion of the other restraining member protrudes from the inner edge to form a plurality of tooth portions, and the other Each of the teeth of the restraining member includes a first tooth and a plurality of second teeth, the length of the first tooth protruding from the ring part is greater than the length of the second tooth protruding from the ring part, and the other Each of the teeth of the restraining member is arranged at intervals and sequentially arranged in a circle. The first clamping tooth and the second clamping tooth protrude obliquely toward the center extension line of the other restraining member, and the protruding direction is away from the other restraining member. At an opening position, one side of the other sealing ring is adjacent to the other opening, and the other side is adjacent to the ring portion of the other restraining member.

In the pipe joint, the number of the first clamping teeth of each tooth portion of the restraining member is one, and the number of the second clamping teeth is two.

In the pipe joint, the number of the first clamping teeth of each tooth portion of the restraining member is one, and the number of the second clamping teeth is one.

The present invention implements the aforementioned technical means, the pipe fitting is inserted into the body to be positioned by the first and second locking teeth of each tooth of the restraining member, and the sealing ring provided in the inner ring chamber Close to the restraint parts, the sealing effect of the sealing ring will be maintained. The pressure change formed by the flow of fluid inside the pipe will cause relative reciprocating movement between the pipe and the body to be pressed or loosened. The sealing ring is pressed or loosened by the reciprocating pressure, even after long-term use. It can maintain its elasticity and have a sealing effect, which can avoid its elastic fatigue. When the present invention is used, when the internal pressure of the tube body increases, the ring position of the restraint member can be forced to form a larger thrust to push against the sealing ring, so as to improve the sealing effect formed by the sealing ring. Moreover, after the restraining member has a plurality of unequal-length clamping teeth and the pipe fitting within the dimensional tolerance range, the fixing effect can be improved due to the use of various unequal-length clamping teeth and the outer wall surface of the pipe fitting to be fixedly combined. In addition, because the overall structure uses fewer components, it has the practical effect of convenient assembly.

Referring to Figures 1 to 5, the pipe joint of the present invention includes a body 10, a restraining member 20, and a sealing ring 30;

The body 10 is one of the embodiments of the present invention. The body 10 is a hollow body with an opening 11 at one end and a closed end at the other end. The body 10 is formed as a mounting portion 12 adjacent to the end with the opening 11 The mounting portion 12 protrudes radially outward, and an inner ring chamber 120 is formed on the inside. The inner ring chamber 120 is an annular space and communicates with the opening 11 and the inside of the body 10. The ring of the inner ring chamber 120 The two sides of the shaped space are respectively a first abutting surface 121 and a second abutting surface 122, and the opening 11 is located at the first abutting surface 121.

The restraining member 20 is a hollow ring-shaped sheet body with a ring portion 21. A plurality of teeth are protrudingly formed at the inner edge of the ring portion 21. The teeth are arranged at intervals and are arranged in sequence. The portion includes a first locking tooth 22 and a plurality of second locking teeth 23. The first locking teeth 22 and each of the second locking teeth 23 protrude obliquely toward the central extension line of the restraint member 20, and the direction of protrusion is away from the opening 11 position, as shown in the enlarged view of FIG. 4, where the length of the first locking tooth 22 protruding from the ring portion 21 is greater than the length of the second locking tooth 23 protruding from the ring portion 21, the first locking tooth 22 and the second The length difference between the two locking teeth 23 is the distance A. The restraining member 20 is arranged at the second abutment surface 122 of the inner ring chamber 120 of the mounting portion 12, and the first locking teeth 22 of each tooth portion are free The hole formed around the end or the hole formed around the free end of the second clamping tooth 23 has a diameter smaller than the pipe diameter of the pipe 40 to be assembled and connected. As shown in the first embodiment shown in FIGS. 3 and 4, the restriction Each tooth portion of the member 20 includes a first locking tooth 22 and two second locking teeth 23.

The sealing ring 30 is a hollow ring body and is arranged in the inner ring chamber 120 of the mounting portion 12, and its two sides respectively abut against the first abutting surface 121 and the ring portion 21 of the restraining member 20.

Referring to Figures 5 and 6, when the present invention is implemented as a pipe joint assembled with a pipe, the body 10 is assembled with a pipe 40 through the opening 11, and the pipe 40 is inserted into the body 10 through the opening 11 and penetrates The sealing ring 30 and the restraining member 20, the first locking teeth 22 and the second locking teeth 23 of the tooth portion of the restraining member 20 are pushed by the outside of the tube 40 to expand. When the tube 40 is assembled to the completion of positioning, the The free ends of the first clamping teeth 22 and each of the second clamping teeth 23 of the restraining member 20 and the outside of the pipe 40 are locked and combined for positioning. As shown in Fig. 7, the pipe diameter of the pipe fitting 400 is slightly smaller than that of the pipe fitting 40 shown in Fig. 6, that is, the outer diameter of the pipe fitting 400 is still within the tolerance range, and the pipe fitting 400 is inserted through the opening 11 It is inserted into the body 10 and penetrates the sealing ring 30 and the restraining member 20. The free ends of the first locking teeth 22 and the second locking teeth 23 of the restraining member 20 and the outside of the tube 400 are locked and positioned in a mutually locking manner.

Referring to FIG. 6, when the pipe 40 actually provides fluid transmission, the pressure of the fluid located inside the body 10 and the pipe 40 will change to different degrees when the transmission fluid is used. At this time, the pressure between the body 10 and the pipe 40 It will move back and forth, so that the restraint piece 20 combined with the pipe 40 will reciprocately press or loosen the sealing ring 30 in the body 10, so the sealing ring 30 can maintain its sealing elasticity, which can avoid the long time after assembly for a period of time. The elastic fatigue is caused by the same pressure over time; when the fluid pressure inside the pipe 40 is greater, the pressure formed will force the ring portion 21 of the restraint member 20 to form a greater thrust against the sealing ring 30, thereby increasing Its sealing effect.

Refer to FIG. 8, which shows a pipe joint according to another embodiment of the present invention. The body 10A of the pipe joint is a hollow body with an opening at both ends, and the openings at both ends are a right opening 11A and a left opening 110A. , The main body 10A has a mounting portion 12A and another mounting portion 12A formed at one end adjacent to the right opening 11A and the left opening 110A, respectively, wherein the mounting portion 12A adjacent to one end of the right opening 11A is provided in parallel with each other The restraining member 20 and the sealing ring 30 are arranged in the other mounting portion 12A adjacent to one end of the left opening 110A, and the other restraining member 20 and the other sealing ring 30 are arranged in parallel with each other. The structure of the side-by-side restraint member 20 and the sealing ring 30 is the same as that of the previous embodiment, at the inner edge of the ring portion 21 of the other restraint member 20 in the other mounting portion 12A adjacent to one end of the left opening 110A The plurality of protruding teeth are arranged at intervals. The first locking teeth 22 and the second locking teeth 23 of the teeth protrude obliquely toward the central extension line of the restraint member 20, and the protruding direction is away from the position of the right opening 110A.

When the embodiment of assembling the two pipes 40A with the present invention is implemented, the two pipes 40A are inserted into the body 10A from the main body 10A, the right opening 11A and the left opening 110A, respectively, and penetrate through the installation parts 12A respectively. The sealing ring 30 and the restraining member 20, the teeth of each restraining member 20 are pushed by the outside of the pipe 40A to expand. When the two pipes 40A are assembled, the teeth of each restraining member 20 The first clamping teeth 22 and the second clamping teeth 23 are locked and combined with the outside of the pipe 40A. When the pipeline is assembled for fluid transmission, the fluid pressure will change to varying degrees due to the flow of the internal fluid. At this time, the body 10A and each tube body 40A will move back and forth, and the sealing ring 30 will be resisted by the reciprocating pressure. Or slightly loosened, so it can maintain its sealing elasticity and have a better sealing effect.

Referring to Figures 9 and 10, it is a second embodiment of the restraining member of the present invention, wherein the restraining member 200 is a hollow ring-shaped sheet body with a ring portion 210, and the inner edge of the ring portion 210 is protrudingly formed with A plurality of teeth, each tooth includes a first clamping tooth 220 and a second clamping tooth 230, the first clamping tooth 220 and the second clamping tooth 230 are arranged at intervals and arranged in a circle, the first clamping The teeth 220 and the second latching teeth 230 protrude obliquely toward the center extension line of the restraining member 200, wherein the length of the first latching teeth 220 protruding from the ring portion 210 is greater than that of the second latching teeth 230 protruding from the ring portion 210 The length of the out.

A: distance 10.10A: Body 11: opening 11A: Right opening 110A: Left opening 12.12A: Installation Department 120: inner ring room 121: First contact surface 122: second contact surface 20, 200: restraints 21, 210: Ring 22, 220: the first tooth 23, 230: second card tooth 30: Sealing ring 40, 400, 40A: pipe fittings 50: body 501: Ring Seat 502: Joint 52: sealing firmware 53: Binding 54: Assembly 60: pipe fittings

Figure 1: The three-dimensional appearance of the present invention. Figure 2: An exploded perspective view of the present invention. Figure 3: A plan view of the first embodiment of the restraint member of the present invention. Figure 4: A partial enlarged view of the first embodiment of the restraint member of the present invention. Figure 5: A schematic cross-sectional view of the present invention and the pipe in a separated state. Figure 6: A schematic cross-sectional view of the combination of the present invention and the pipe fitting. Figure 7: A schematic cross-sectional view of another combination of the present invention and the pipe after being combined. Figure 8: A schematic cross-sectional view of another embodiment of the present invention combined with two pipes. Figure 9: External view of the second embodiment of the restraint member of the present invention. Figure 10: A plan view of the second embodiment of the restraining member of the present invention. Figure 11: A schematic cross-sectional view of a combination of the prior art.

10: body

11: opening

22: The first tooth

23: second card tooth

30: Sealing ring

Claims (5)

A pipe joint, which includes a body, a restraint and a sealing ring; The body is a hollow body with an opening at one end and a closed end at the other end. The body adjacent to the opening is formed with a mounting portion which protrudes radially outward from the body and forms an inner Annular chamber, the inner ring chamber is in communication with the opening, the inner ring chamber is an annular space, and its two side walls are respectively a first abutment surface and a second abutment surface, the opening is located in the first Close to the surface The restraining member is a hollow ring-shaped sheet body, which has a ring portion protruding from the inner edge to form a plurality of teeth portions, each of the teeth portion includes a first tooth and at least one second tooth, the The length of the first tooth protruding from the ring portion is greater than the length of the second tooth protruding from the ring portion; The sealing ring is a hollow ring body, which is arranged in the inner ring chamber of the mounting part side by side with the restraining member. The other side of the first abutting place is abutted against the ring part of the restraint member. The pipe joint according to claim 1, wherein each of the teeth of the restraining member is arranged at intervals and sequentially arranged in a circle, and the first clamping tooth and the second clamping tooth are projecting obliquely toward the center of the restraining member. The direction of extension is away from the opening position. The pipe joint according to claim 1 or 2, wherein the closed end of the body is formed to have another opening, and further includes another restraining member and another sealing ring; The body is adjacent to the other opening to form another mounting portion, the other mounting portion protrudes radially outward from the body and forms another inner ring chamber inside, the other inner ring chamber and the other The opening is in communication, the other restraining member and the other sealing ring are arranged side by side in the other inner ring chamber, the other restraining member is a hollow ring-shaped sheet body and has a ring portion, and the ring of the other restraining member A plurality of teeth are formed protruding from the inner edge of the part, and each tooth part of the other restraining member includes a first tooth and a plurality of second teeth. The length of the first tooth protruding from the ring part is longer than the first tooth The length of the two retaining teeth protruding from the ring portion, the teeth portions of the other restraining member are arranged at intervals and are arranged in sequence, and the first retaining teeth and the second retaining teeth are inclined toward the other restraining member The central extension line of the ring protrudes away from the other opening position, one side of the other sealing ring is adjacent to the other opening, and the other side is adjacent to the ring portion of the other restraining member. The pipe joint according to claim 3, wherein the number of the first clamping teeth of each tooth portion of the restraining member is one, and the number of the second clamping teeth is two. The pipe joint according to claim 3, wherein the number of the first locking teeth of each tooth portion of the restraining member is one, and the number of the second locking teeth is one.

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