WO2016169291A1

WO2016169291A1 - Fast connection pipe

Info

Publication number: WO2016169291A1
Application number: PCT/CN2015/098872
Authority: WO
Inventors: 刁振彬; 林细勇; 程佳佳; 孙世裕; 何群赞; 何旺枝; 谭学良; 付秀丽
Original assignee: 日丰企业集团有限公司; 日丰科技有限公司
Priority date: 2015-04-24
Filing date: 2015-12-25
Publication date: 2016-10-27

Abstract

A fast connection pipe comprises a core pipe (10), a housing sleeve (30) and a holding pipe sleeve (40). The housing sleeve (30) is sleeved outside the core pipe. One end of the housing sleeve (30) is provided at one end of the core pipe, and an accommodation space for a pipe material to be inserted in is provided between the other end of the housing sleeve (30) and the core pipe. The holding pipe sleeve (40) is sleeved outside the core pipe and located in the housing sleeve (30). The holding pipe sleeve (40) matches the housing sleeve (30) by a space. The holding pipe sleeve (40) comprises an annular pipe sleeved outside the core pipe and a plurality of holding pieces connected to the annular pipe. An inner side wall of the housing sleeve (30) is provided with a first gradually-reducing section (32) having an inner diameter gradually reducing in a direction away from the other end of the core pipe. A holding piece (42) is provided with a second gradually-reducing section (421) having an outer diameter gradually reducing in a direction away from a second threaded section (31). The second gradually-reducing section (421) matches the first gradually-reducing section (32). The fast connection pipe comprises a simple structure of the holding pipe sleeve (40) and the housing sleeve (30), and achieves, by holding the pipe material via the holding pipe sleeve (40), a better effect of preventing the pipe material from breaking loose.

Description

Quick connecting pipe fitting

Technical field

The invention relates to the field of pipeline technology, and in particular to a quick-connecting pipe fitting.

Background technique

How to realize quick disassembly and assembly, convenient maintenance and good sealing performance between the pipe fittings has become the constant pursuit of technicians in the pipe fitting industry. At present, pipe joints are often used in clamped and nut ferrule configurations. Among them, the clamp-type joint needs to be installed with a special pressure clamp, which is time consuming and laborious. In addition, if the clamp-on joint is not pressed into place, the sealing performance of the pipe is not guaranteed. Furthermore, if the clamped joint leaks, it is difficult to disassemble, and the pipe must be cut so that the joint cannot be reused. The nut ferrule joint requires a wrench to tighten the nut for installation, which is more time consuming and labor intensive. And if the pipe is not inserted in place, or if the installer does not tighten the nut, the sealing performance of the pipe is also not guaranteed. After a period of use, the nut is prone to loosening and the sealing performance of the pipe will be greatly affected.

Summary of the invention

Based on this, the present invention overcomes the deficiencies of the prior art, and provides a quick-connecting pipe member that is easy to disassemble and disassemble the pipe material and has a good anti-loose effect.

Its technical solutions are as follows:

A quick-connecting pipe member comprising: a die; a casing sleeve, the casing sleeve is disposed outside the die, the casing sleeve is disposed at one end of the casing, and the other end of the casing sleeve is An accommodating space for pipe insertion is provided between the dies, and the inner side wall of the outer casing is provided with a first tapered portion whose inner diameter gradually decreases in a direction toward the pipe insertion opening of the accommodating space; and a jacket sleeve, The pinch sleeve is sleeved outside the die and is located in the outer casing, the pinch sleeve is in clearance fit with the outer casing, and the clamp sleeve includes an annular pipe sleeved outside the die And a plurality of clamping members connected to the annular tube, the clamping member having a second tapered portion whose outer diameter gradually decreases in a direction toward the tube insertion opening of the receiving space, the second gradually The constricted section is adapted to the first tapered section.

In one embodiment, the outer side wall of one end of the die is provided with a first threaded section, and the inner side wall of one end of the outer sleeve is provided with a second threaded section, and the first threaded section is matched with the second threaded section. .

In one embodiment, the outer sidewall of the die is provided with a first boss and/or the inner sidewall of the outer casing is provided with a second boss, and the first thread segment is disposed on the first boss And/or the second thread segment is disposed on the second boss.

In one embodiment, the outer casing is provided with more than one through hole, and the through hole is disposed adjacent to the second threaded portion, and the through hole communicates with the external environment through the through hole.

In one of the embodiments, the outer sidewall of the die is provided with a first flange, the outer sleeve end being in interference with the first flange.

In one embodiment, further comprising a housing seat having a passage for mounting the die, and a second flange disposed on a sidewall of the passage for forming the passage, the outer side of the die The wall is provided with a first mounting groove, and the second flange is mounted in the first mounting groove, and one end of the outer casing is mounted on the die through the outer casing.

In one embodiment, the outer side wall of the outer casing is provided with a first step, the outer end of the outer casing sleeve is sleeved on the first step, and the first step is provided with a second mounting groove, the outer casing The sleeve end is provided with a third flange, and the third flange is fitted into the second mounting groove.

In one embodiment, the outer side wall of the outer end of the outer casing has a diverging surface that gradually expands along the axial direction of the die, and the end of the clamping member and the diverging surface of the end of the outer casing Inconsistent.

In one of the embodiments, the side wall for forming the passage is provided with a second step, and the second flange is located on the second step.

In one embodiment, the second flange defines a plurality of first open slots, and the plurality of first open slots divide the second flange into a plurality of segments.

In one embodiment, two ends of the inner side wall of the outer casing are respectively provided with two second opening grooves, and the two second opening grooves are symmetrically arranged with respect to the axis of the core.

In one embodiment, further comprising a booster seat disposed within the outer casing and sleeved outside the die, the booster seat having an outer sidewall facing the end of the jacket sleeve along the tube The gradually expanding surface of the core axially expanding, the end of the clamping member is in opposition or opposite to the diverging surface of the end of the booster seat.

In one embodiment, the outer sidewall of the die is provided with more than one third mounting slot, and the third mounting slot is provided with a sealing ring.

In one embodiment, the inner side wall of the clamping member is provided with a plurality of mutually parallel annular calipers, wherein the height of one of the calipers is higher than the height of the other calipers.

In one embodiment, the inner side wall of the outer casing is provided with a fourth flange, and the outer side wall of the clamping member is provided with a fifth flange, and the fourth flange is offset from the fifth flange; The fourth flange interferes with the fifth flange after pulling the clamping member away from the second thread segment, and the second tapered portion and the first tapered portion The paragraphs are in conflict.

In one of the embodiments, a portion of the annular tube projects outside of the outer casing when the fourth flange interferes with the fifth flange.

In one embodiment, the outer side wall of the annular tube protrudes from the clamping member, and the outer side wall of the annular tube is opposite to the clamping member when the clamping member is pushed toward the second thread segment. The fourth flange is in conflict.

In one embodiment, the method further includes a pipe fitting, the pipe fitting includes a pipe body, and the pipe body is provided with a curved opening adapted to the outer side wall of the pipe, the pipe member body further provided with a sixth flange and a handle, the sixth flange is disposed around the arcuate opening, and the sixth flange and the ring The tube is matched.

In one embodiment, the method further includes a tube sleeve, the tube tube set is disposed in the outer casing, the end portion of the tube sleeve is opposite to the annular tube, and the inner side wall of the end portion of the outer casing is disposed The seventh flange, the outer side wall of the take-up sleeve is provided with an eighth flange that cooperates with the seventh flange.

The principle and effect of the present invention will be further described below in conjunction with the above technical solutions:

1. The above quick-connecting pipe member, when the pipe is pulled out from the pinch sleeve by the external pulling force, the pipe drives the pinch sleeve to move, so that the second tapered portion of the pinch sleeve and the first tapered portion of the outer sleeve Inconsistent, the clamp sleeve is removed and the tube is clamped through the clamp sleeve to prevent the tube from being pulled out of the quick-connect fitting. Compared with the prior art connecting pipe fittings, the structure of the present invention is simpler only by the clamping sleeve and the outer casing, and the pipe is clamped by the clamping sleeve to prevent the loosening effect of the pipe.

2. The first boss is connected to the second boss, so that an accommodation space for installing the pipe is formed between the outer casing and the die, and the pipe is in conflict with the first boss after the pipe is inserted into the receiving space. To prevent the pipe from continuing to insert inward.

3. When the outer casing is mounted on the die, the first flange is in contact with the end of the outer casing, so that the installation structure is more stable. After the tube is loaded into the accommodating space, it is convenient to observe whether the tube is inserted into place through the through hole, and if the tube is not inserted into position, the tube is continuously inserted into the quick-connect tube. By providing a sealing ring between the die and the pipe, the sealing performance of the quick-connect pipe is greatly improved.

4. When the pipe is inserted, the top of the tooth with the higher tooth height grasps the pipe, forming a circle of wire tightening instead of tightening the one ring, so that the friction of the pipe inserted into the quick-connect pipe is reduced. It ensures that the pipe is easier to insert into the quick-connect fitting.

5. When the pipe is pulled out of the quick-connect pipe, the pipe drives the pinch sleeve to move away from the second threaded section, since the outer casing has an inner diameter gradually in a direction toward the pipe insertion opening of the receiving space. a reduced first tapered section, and the clamping member has a second tapered section whose outer diameter gradually decreases in a direction toward the tubular insertion opening of the receiving space, which will cause the second tapered section to be the first tapered The constricted section is in contact with the tube sleeve, and the clamping force of the tube sleeve on the tube is getting larger and larger as the tube is pulled out, which can better prevent the tube from being pulled out from the quick-connecting tube.

6. If the pipe needs to be pulled out from the quick-connecting pipe fitting, during the process of pulling the pipe from the quick-connecting pipe fitting, the annular pipe is placed in the outer casing through the resisting member against the annular pipe, thereby avoiding the clamping pipe sleeve being pulled out during the pulling process. Moving and clamping the tubing together with the tubing makes it easier to remove the tubing from the quick-connect fitting.

7. During the process of inserting the pipe into the quick-connecting pipe fitting, the pipe material pushes the clamping member into the quick-connecting pipe fitting, and the fourth flange is in contact with the annular pipe, so that the clamping pipe sleeve can be prevented from continuing to move into the quick-connecting pipe fitting. . It can be seen that the position of the pinch sleeve can be limited by the fourth flange. At the same time, when the pipe continues to be inserted, the clamping member is naturally opened, which makes the pipe material more labor-saving, so that the clamping sleeve has better clamping effect on the pipe.

8. By adding a housing seat on the die, and providing a housing sleeve on the housing seat, and the housing seat end portion is disposed along the axial direction of the tube core The gradually expanding diverging surface causes each end of the clamping member to collide with the diverging surface. When the pipe needs to be taken out, the annular pipe is pushed into the die along the axial direction of the die, and the end of each clamping member slides along the diverging surface and is expanded by the diverging surface, so that the pipe can be easily extracted at this time. . It can be seen that compared with the prior art connecting pipe fittings, the invention is more convenient to disassemble the pipe material and prevent the pipe material from loosening effect.

9. When it is necessary to take out the pipe, firstly, the arc-shaped opening of the pipe body is sleeved, so that the sixth flange abuts the end of the ring pipe, and the handle is pressed so that the pinch sleeve is pressed into the casing along the axial direction of the die. Internally, the end of the clamping member abuts the diverging surface and is expanded by the diverging surface, so that the tube can be easily pulled out of the tube sleeve. It can be seen that the pipe fitting of the invention has a simple structure and is convenient for drawing out the pipe.

10. The second flange is provided with three first open slots. The three first opening slots divide the second flange into three segments. Thus, during the mounting of the housing to the die, the plurality of segments of the second flange can be gradually enlarged until the housing is mounted to the die. It can be seen that the provision of a plurality of first open slots allows the inner bore to be easily expanded, i.e., it is easier to mount the housing on the die.

11. By adding a booster seat in the outer casing, the end of the booster seat is arranged as a diverging surface, so that each end of the clamping member is in contact with the diverging surface. When the pipe needs to be taken out, the annular pipe is pushed into the die along the axial direction of the die, and the end of each clamping member slides along the diverging surface and is expanded by the diverging surface, so that the pipe can be easily extracted at this time. .

DRAWINGS

1 is a schematic structural view of a quick-connect pipe fitting according to Embodiment 1 of the present invention;

2 is a schematic structural view of the quick-connect pipe fitting after loading the pipe according to the first embodiment of the present invention;

3 is a schematic structural view of the quick-connecting pipe member pulling the pipe outward according to the first embodiment of the present invention;

4 is a schematic structural view of a pinch sleeve according to an embodiment of the present invention;

5 is a schematic structural view of a quick-connect pipe fitting according to Embodiment 2 of the present invention;

6 is a schematic view of the quick-connecting pipe fitting according to the second embodiment of the present invention;

7 is a schematic structural view of a pipe fitting according to Embodiment 2 of the present invention;

Figure 8 is a side view of the pipe fitting according to the second embodiment of the present invention.

9 is a schematic structural view of a housing seat according to Embodiment 2 of the present invention;

10 is a schematic view of the housing seat in the axial direction according to Embodiment 2 of the present invention;

11 is a schematic structural view of a casing according to Embodiment 2 of the present invention;

12 is a schematic view of the outer casing of the second embodiment of the present invention in an axial direction;

Figure 13 is a partial cross-sectional view showing the outer casing of the second embodiment of the present invention;

14 is a schematic structural view of a quick-connecting pipe member according to Embodiment 3 of the present invention;

Figure 15 is a partial cross-sectional view showing a pinch sleeve according to an embodiment of the present invention;

Figure 16 is an enlarged schematic view of the portion I in Figure 15.

Description of the reference signs:

10, the die, 11, the first thread segment, 12, the first boss, 13, the first mounting groove, 14, the sealing ring, 15, the first flange, 16, the third mounting groove, 20, the housing seat, 21, second flange, 22, diverging surface, 23, first step, 24, second mounting groove, 25, second step, 26, first open slot, 27, booster seat, 30, outer casing, 31 , second threaded section, 32, first tapered section, 33, second boss, 34, third flange, 35, through hole, 36, rough surface, 37, fourth flange, 38, second opening Slot, 39, seventh flange, 40, pinch sleeve, 41, annular tube, 42, clamping member, 421, second tapered portion, 422, caliper, 423, fifth flange, 50, accommodation space, 60, pipe, 70, take the pipe body, 71, curved opening, 72, sixth flange, 73, handle, 80, take the pipe sleeve, 81, the eighth flange.

detailed description

The embodiments of the present invention are described in detail below:

FIG. 1 is a structural view showing a quick-connecting pipe member according to Embodiment 1 of the present invention, and FIG. 2 is a structural view showing a pipe fitting 60 in which the quick-connecting pipe member is installed in the first embodiment, and FIG. 3 is correspondingly illustrated. The structure of the quick-connecting pipe clamping pipe 60 when the pipe 60 is pulled is taken out. The quick connect fitting of the present invention comprises a die 10, a casing sleeve 30 and a jacket sleeve 40.

The outer casing 30 is sleeved outside the die 10 . One end of the outer casing 30 is mounted on one end of the die 10, and an accommodating space 50 for inserting the pipe 60 is disposed between the other end of the outer casing 30 and the die 10. The jacket sleeve 40 is sleeved outside the die 10 and located within the outer casing 30. The pinch sleeve 40 is in clearance fit with the outer casing 30. The gap B between the tube sleeve 40 and the outer casing 30 may be 0.35 to 0.45 cm. This size range is easy to insert into the tube 60, and does not cause the tube 60 to be too loose after insertion, and has a good pull-out resistance. Once the outer casing 30 is mounted on the die 10, the tubular 60 can be loaded into the receiving space 50 between the outer casing 30 and the die 10. By clamping the tube 60 by the pinch sleeve 40, the tube 60 can be better prevented from coming loose.

Referring to FIG. 4, the jacket sleeve 40 includes an annular tube 41 sleeved outside the die 10 and a plurality of clamping members 42 coupled to the annular tube 41. The inner side wall of the outer casing cover 30 is provided with a first tapered portion 32 whose inner diameter gradually decreases in a direction toward the pipe insertion opening of the accommodating space 50. The clamping member 42 has a second tapered section 421 whose outer diameter gradually decreases in a direction toward the tube insertion opening of the accommodating space 50. The second tapered section 421 is adapted to the first tapered section 32. During the process of the tube 60 being pulled from the pinch sleeve 40, the tube 60 moves the pinch sleeve 40 to cause the second tapered section 421 of the pinch sleeve 40 and the first tapered section 32 of the outer casing 30. Inconsistent, the pinch sleeve 40 is restrained from being pulled out while the pipe 60 is clamped by the pinch sleeve 40 to prevent the pipe 60 from being pulled out of the quick-connect pipe.

In the above quick-connecting pipe fitting, compared with the prior art connecting pipe fitting, the structure of the present invention only has the pinch sleeve 40 and the outer casing 30. The addition of the tube 60 by clamping the tube sleeve 40 makes it easier to prevent the tube 60 from coming loose.

The outer sidewall of the die 10 is provided with a first boss 12 and/or the inner sidewall of the outer casing 30 is provided with a second boss 33. The first threaded section 11 is disposed on the first boss 12 and/or the second threaded section 31 is disposed on the second boss 33. 1 to 3, the outer side wall of the die 10 is provided with a first boss 12, the first boss 12 is provided with a first thread segment 11, and the inner side of the outer casing 30 is provided with a second boss 33, second A second thread segment 31 is provided on the boss 33. Thus, the first boss 12 is connected to the second boss 33, so that the accommodating space 50 for arranging the pipe 60 can be formed between the outer casing 30 and the die 10, and after the pipe 60 is inserted into the accommodating space 50, the pipe The 60 is in opposition to the first boss 12 to prevent the tube 60 from continuing to be inserted inwardly.

The outer side wall of the die 10 is provided with a first flange 15 , and the end of the outer casing 30 is in contact with the first flange 15 . Thus, when the outer casing 30 is mounted on the die 10, the first flange 15 is in contact with the end of the outer casing 30, so that the mounting structure is more stable. The outer casing 30 is provided with more than one through hole 35. The through hole 35 is disposed adjacent to the second thread segment 31, and the die 10 communicates with the external environment through the through hole 35. The die 10 communicates with the external environment through the through hole 35. After the tube 60 is loaded into the accommodating space 50, it can be easily seen through the through hole 35 whether the tube 60 is inserted into place, and if the tube 60 is not inserted into position, the tube 60 is continuously inserted into the quick-connect tube.

Referring to FIG. 3, the inner side wall of the outer casing 30 is provided with a fourth flange 37. The outer side wall of the clamping member 42 is provided with a fifth flange 423. The fourth flange 37 is offset from the fifth flange 423. After the clamping member 42 is pulled away from the second thread segment 31, the fourth flange 37 is in contact with the fifth flange 423, and the second tapered portion 421 is The first tapered section 32 is in conflict. When the tubing 60 is withdrawn from the quick connect fitting, the tubing 60 causes the collet sleeve 40 to move in a direction away from the second threaded section 31. Since the outer casing 30 has a first tapered portion 32 whose inner diameter gradually decreases in a direction toward the pipe insertion opening of the accommodation space, and the clamping member 42 has a direction toward the pipe insertion opening of the accommodation space The second tapered section 421, which gradually decreases in diameter, will cause the second tapered section 421 to interfere with the first tapered section 32, restricting the pinch sleeve 40 from being pulled out. At the same time, the clamping force of the tube sleeve 40 to the tube 60 is larger and larger as the tube 60 is pulled out, which can better prevent the tube 60 from being pulled out from the quick-connect tube.

When the fourth flange 37 is in contact with the fifth flange 423, a portion of the annular tube 41 projects outside the outer casing 30. If it is necessary to pull the pipe 60 out of the quick-connecting pipe, during the process of pulling the pipe 60 out of the quick-connecting pipe, the end of the annular pipe 41 is made to pass against the end of the annular pipe 41 by the abutting member (not shown) such that the annular pipe 41 is in the outer casing. In 30, the pinch sleeve 40 is prevented from moving with the tubing 60 and clamping the tubing 60 during the extraction process, thus making it easier to remove the tubing 60 from the quick connect fitting.

The outer side wall of the annular tube 41 protrudes from the clamping member 42. When the clamping member 42 is pushed toward the second threaded section 31, the outer side wall of the annular tube 41 interferes with the fourth flange 37. When the clamping member 42 is pushed toward the second threaded section 31, the outer side wall of the annular tube 41 is in contact with the fourth flange 37. Thus, during the insertion of the tubing 60 into the interior of the quick-connecting tubular member, the tubular member 60 pushes the clamping member 42 into the quick-connecting tubular member, and the fourth flange 37 is in contact with the annular tubular member 41, such that It is possible to prevent the pinch sleeve 40 from continuing to move into the quick connect fitting. It can be seen that the pinch sleeve 40 can be limited by the fourth flange 37. At the same time, when the pipe 60 continues to be inserted, the clamping member 42 is naturally opened, so that the pipe 60 is more labor-saving when inserted, so that the clamping sleeve 40 has a better clamping effect on the pipe 60.

Referring to Figures 5-6, the quick-connecting tubular member is a modified structural view of the quick-connecting tubular member illustrated in Figures 1-3, which is provided with a housing 20 in the quick-connecting tubular member of the present invention. The housing base 20 is provided with a passage for mounting the die 10, and a second flange 21 for forming a side wall of the passage. The outer sidewall of the die 10 is provided with a first mounting groove 13 . The second flange 21 is mounted in the first mounting groove 13 . One end of the outer casing 30 is mounted on the die 10 through the outer casing 20. The outer side wall of the end of the outer casing 20 has a diverging surface 22 that gradually expands along the axial direction of the die 10. The end of the clamping member 42 opposes the diverging surface 22 of the end of the housing seat 20.

By attaching the outer casing 20 to the die 10 and providing the outer casing 30 on the outer casing 20, and the end of the outer casing 20 is provided with a diverging surface 22 which gradually expands along the axial direction of the die 10, so that the clamping member Each end portion 42 is in contact with the diverging surface 22. When the pipe 60 needs to be taken out, the annular pipe 41 is pushed into the die 10 along the axial direction of the die 10, and the ends of the clamping members 42 slide along the diverging surface 22 and are expanded by the diverging surface 22. At this point, the tube 60 can be easily withdrawn. It can be seen that the present invention is more convenient to disassemble the pipe 60 than the prior art connecting pipe member, and prevents the pipe 60 from being loosened.

Referring to Figures 7-8, the quick connect fitting of the present invention further includes a take-up member. The pipe take-up member includes a pipe body 70. The tube body 70 is provided with an arcuate opening 71 adapted to the outer side wall of the tube 60, and the arcuate opening 71 illustrated in Fig. 7 is semicircular. The tube body 70 is further provided with a sixth flange 72 and a handle 73. The sixth flange 72 is disposed around the arcuate opening 71 and the sixth flange 72 is mated with the annular tube 41. When the pipe 60 needs to be taken out, the arcuate opening 71 of the pipe fitting body 70 is first sleeved to the pipe 60 such that the sixth flange 72 abuts the end of the annular pipe 41, and the handle 73 is pressed so that the pinch sleeve 40 is along the die 10 The axial direction is pressed into the interior of the outer casing 30, and the end of the clamping member 42 abuts against the diverging surface 22 and is expanded by the diverging surface 22, so that the pipe 60 can be easily pulled out of the jacket 40. It can be seen that the pipe fitting of the present invention has a simple structure and is convenient for drawing the pipe 60.

Referring to FIGS. 9-10, the outer side wall of the outer casing 20 is provided with a first step 23. The end of the outer casing 30 is sleeved on the first step 23 . The first step 23 is provided with a second mounting groove 24 . The end of the outer casing 30 is provided with a third flange 34, and the third flange 34 is fitted into the second mounting groove 24. In this way, the end of the outer casing 30 is sleeved on the first step 23 of the outer casing 20, and the third flange 34 is inserted into the second mounting groove 24, so that the outer casing 30 can be mounted on the outer casing 20, and installed. Extremely convenient.

A second step 25 is provided on the side wall for forming the passage. The second flange 21 is located on the second step 25. When the tubing 60 is inserted from one end of the die 10, the second step 25 can abut the end of the tubing 60 such that the end of the tubing 60 is mounted on the second step 25 and the tubing 60 is prevented from continuing to be inserted.

The second flange 21 defines a plurality of first opening slots 26 . a plurality of the first open slots 26 to the second flange 21 Divided into multiple segments. The first open slots 26 illustrated in the figures are three. The three first opening grooves 26 divide the second flange 21 into three segments. Thus, during the mounting of the outer casing 20 to the die 10, the plurality of segments of the second flange 21 can be gradually enlarged until the outer casing 20 is mounted to the die 10. It can be seen that the provision of a plurality of first open slots 26 allows the inner bore to be easily expanded, i.e., it is easier to mount the housing 20 on the die 10.

Referring to FIGS. 11-13, two ends of the inner side wall of the outer casing 30 are respectively provided with two second opening grooves 38. The two second opening slots 38 are arranged symmetrically about the axis of the die 10. In this way, the mold release of the outer casing 20 during the injection molding production is facilitated, making the outer casing 30 easier to manufacture.

Referring to Figure 14, the quick-connecting tubular member is a deformed structural view of the quick-connecting tubular member illustrated in Figures 1-13, which is provided with a booster seat 27 in the quick-connecting tubular member of the present invention. The quick connect fitting of the present invention further includes a booster seat 27 disposed within the outer casing 20 and sleeved outside the die 10. The booster seat 27 has a diverging surface 22 that gradually expands along the axial direction of the die 10 toward the outer side wall of the end of the pinch sleeve 40. The end of the clamping member 42 is in contact with or opposite to the diverging surface 22 of the end of the booster seat 27.

By adding a booster seat 27 in the outer casing 20, the end of the booster seat 27 is provided as a diverging surface 22 such that each end of the clamping member 42 is in contact with the diverging surface 22. When the pipe 60 needs to be taken out, the annular pipe 41 is pushed into the die 10 along the axial direction of the die 10, and the ends of the clamping members 42 slide along the diverging surface 22 and are expanded by the diverging surface 22. At this point, the tube 60 can be easily withdrawn.

The quick connect fitting of the present invention further includes a take-up sleeve 81. The take-up sleeve 81 is mounted in the outer casing 30, and the end of the take-up sleeve 81 is opposite to the annular tube 41. The inner side wall of the end of the outer casing 30 is provided with a seventh flange 39. The outer side wall of the outer sleeve 81 is provided with an eighth flange 81 that cooperates with the seventh flange 39. By the seventh flange 39 being in contact with the eighth flange 81, it is possible to prevent the take-up sleeve 81 from slipping out of the outer casing 30 for convenient use.

The outer sidewall of the die 10 is provided with more than one third mounting groove 16. A seal ring 14 is disposed in the third mounting groove 16 . By providing the sealing ring 14 between the die 10 and the tube 60, the sealing performance of the quick-connecting pipe member is greatly improved.

Referring to FIGS. 15-16, the inner side wall of the clamping member 42 is provided with a plurality of annular calipers 422 that are parallel to each other. One of the calipers 422 has a higher ruler height than the other calipers 422. When the tube 60 is inserted, the crests of the teeth having a higher tooth height grasp the tube 60, forming a loop of wire tightening instead of tightening one turn. This reduces the frictional force of the tube 60 inserted into the quick-connecting tubular member, which ensures that the tubular member 60 is easier to insert into the quick-connecting tubular member.

The technical features of the above-described embodiments may be arbitrarily combined. For the sake of brevity of description, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be considered as the scope of this manual.

The above-described embodiments are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but is not to be construed as limiting the scope of the invention. It should be noted that those of ordinary skill in the art, without departing from the inventive concept, It is also possible to make several modifications and improvements, which are within the scope of the invention. Therefore, the scope of the invention should be determined by the appended claims.

Claims

A quick-connecting pipe characterized by comprising:

Die

a casing sleeve, the casing sleeve is disposed outside the die, one end of the casing sleeve is mounted on one end of the die, and the other end of the casing sleeve and the die are provided with a tube for insertion a space, the inner side wall of the outer casing is provided with a first tapered portion whose inner diameter gradually decreases in a direction toward the pipe insertion opening of the receiving space; and

a jacket sleeve that is sleeved outside the core and located in the outer casing, the clamp sleeve is in clearance fit with the outer casing, and the clamp sleeve includes a sleeve disposed on the die An outer annular tube and a plurality of clamping members connected to the annular tube, the clamping member having a second tapered portion whose outer diameter gradually decreases in a direction toward the tube insertion opening of the receiving space, The second tapered section is adapted to the first tapered section.
The quick-connecting pipe fitting according to claim 1, wherein the outer side wall of one end of the die is provided with a first threaded section, and the inner side wall of one end of the outer casing is provided with a second threaded section, the first threaded section and The second thread segments are mated.
The quick-connecting tubular member according to claim 2, wherein the outer sidewall of the die is provided with a first boss and/or the inner sidewall of the outer casing is provided with a second boss, the first thread segment is disposed The second boss is disposed on the first boss and/or the second threaded section.
The quick-connecting pipe member according to claim 2, wherein the outer casing is provided with one or more through holes, the through holes are disposed adjacent to the second threaded portion, and the through-hole passes through the through-hole and the outside The environment is connected.
The quick connect fitting of claim 1 wherein said outer tubular sidewall is provided with a first flange, said outer casing end being in interference with said first flange.
A quick connect fitting according to claim 1 further comprising a housing seat, said housing seat having a passage for mounting said die, and a second portion disposed on a side wall for forming said passage a flange, the outer sidewall of the die is provided with a first mounting groove, the second flange is disposed in the first mounting groove, and one end of the outer casing is mounted on the die through the outer casing .
The quick-connecting pipe fitting according to claim 6, wherein the outer side wall of the outer casing is provided with a first step, the outer end of the outer casing sleeve is sleeved on the first step, and the first step is provided with a second mounting groove, the outer sleeve end portion is provided with a third flange, and the third flange is inserted into the second mounting groove.
The quick-connecting tubular member according to claim 6, wherein the outer side wall of the outer end of the outer casing has a gradually expanding surface that gradually expands along the axial direction of the die, and the end of the clamping member is The tapered faces of the end of the housing are in conflict.
The quick connect fitting according to claim 8, wherein a side wall for forming the passage is provided with a second step, and the second flange is located on the second step.
The quick-connecting tubular member according to claim 6, wherein the second flange is provided with a plurality of first opening grooves, and the plurality of the first opening grooves divide the second flange into a plurality of segments.
The quick-connecting pipe fitting according to claim 6, wherein two ends of the inner side wall of the outer casing are respectively provided with two second opening grooves, and the two second opening grooves are arranged with respect to the axis of the core Symmetrical settings.
The quick connect fitting according to claim 6, further comprising a booster seat disposed in the outer casing and sleeved outside the die, the booster seat facing an end of the jacket sleeve The outer side wall has a flared surface that tapers along the axial direction of the die, the end of the clamping member being in opposition or oppositely disposed with the flared surface of the end of the booster seat.
The quick-connecting pipe member according to claim 1, wherein the outer wall of the die is provided with one or more third mounting grooves, and the third mounting groove is provided with a sealing ring.
The quick-connecting tubular member according to claim 1, wherein the inner side wall of the clamping member is provided with a plurality of mutually parallel annular calipers, wherein one of the calipers has a higher ruler height than the other calipers.
The quick-connecting tubular member according to claim 1, wherein the inner side wall of the outer casing is provided with a fourth flange, and the outer side wall of the clamping member is provided with a fifth flange, the fourth flange and the a fifth flange staggered arrangement; the fourth flange is in interference with the fifth flange after the clamping member is pulled away from the second thread segment, and the second taper The segment is in conflict with the first tapered segment.
The quick connect fitting of claim 15 wherein a portion of the annular tube projects beyond the outer casing when the fourth flange interferes with the fifth flange.
The quick-connecting tubular member according to claim 15, wherein an outer side wall of the annular tube protrudes from the clamping member, and when the clamping member is pushed toward the second threaded portion, The outer side wall of the annular tube is in contact with the fourth flange.
The quick-connecting pipe member according to any one of claims 1 to 17, further comprising a pipe fitting, wherein the pipe fitting comprises a pipe body, and the pipe body is provided to be adapted to an outer wall of the pipe. An arcuate opening, the tube body is further provided with a sixth flange and a handle, the sixth flange is disposed around the arcuate opening, and the sixth flange is mated with the annular tube.
The quick-connecting pipe member according to any one of claims 1 to 17, further comprising a pipe sleeve, wherein the pipe set is disposed in the outer casing, the pipe sleeve end and the ring The inner side wall of the outer end of the outer sleeve is provided with a seventh flange, and the outer side wall of the outer sleeve is provided with an eighth flange which cooperates with the seventh flange.