CN110878869A - Anti-drop quick connector and mounting method thereof - Google Patents
Anti-drop quick connector and mounting method thereof Download PDFInfo
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- CN110878869A CN110878869A CN201911118820.XA CN201911118820A CN110878869A CN 110878869 A CN110878869 A CN 110878869A CN 201911118820 A CN201911118820 A CN 201911118820A CN 110878869 A CN110878869 A CN 110878869A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 26
- 238000010168 coupling process Methods 0.000 claims description 26
- 238000005859 coupling reaction Methods 0.000 claims description 26
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to an anti-drop quick connector and an installation method thereof, wherein a main connector piece and an auxiliary connector piece are butted, the main connector piece is provided with a corrugated straight pipe, the auxiliary connector piece is provided with a pipe fitting, the outer diameter of the pipe fitting is sleeved with a rotary lock sleeve, and the end part of the pipe fitting is provided with an annular flanging; the quick connector comprises a connector sleeve and a sealing sleeve, the connector sleeve is provided with a through hole and an internal thread, a section of conical hole which is gradually enlarged towards the internal thread hole from the through hole is arranged between the through hole and the internal thread hole, and a C-shaped clamp spring is arranged at the large hole end of the conical hole; during installation, the perforation of the joint sleeve is sleeved with the corrugated straight pipe of the main joint piece, the clamp spring is sleeved into the corrugated straight pipe of the internal threaded hole, then the sealing sleeve is sleeved with the corrugated straight pipe of the internal threaded hole and is abutted against the clamp spring in a pre-tightening mode, finally, the rotary lock sleeve is screwed and locked with the internal threaded hole of the joint sleeve, the end portion of the sealing sleeve abuts against the clamp spring of the C type, the clamp spring is embedded into the conical hole along the inclined plane of the conical hole and deforms into an O type shape, and the clamp spring is clamped and limited in the corrugated groove of the corrugated straight pipe of the main joint piece.
Description
Technical Field
The invention relates to a connector connecting piece, in particular to an anti-drop quick connector and an installation method thereof.
Background
The quick connector is a connector for quickly connecting or disconnecting pipelines, and is widely applied to the field of gas-liquid conveying. The existing joints of some gas pipelines need frequent replacement or repair and replacement, so the joints are basically connected by adopting quick joints. However, the existing quick coupling usually includes a coupling sleeve, a sealing sleeve and a locking sleeve, the sealing sleeve inside the coupling sleeve and the butted pipeline form a tight seal by screwing the coupling sleeve and the locking sleeve, and the butted pipeline is usually designed as a corrugated pipe, so that when the sealing sleeve is compressed and expanded in the coupling sleeve, the corrugated pipe can be tight, so as to prevent the butt joint from being disengaged. However, the anti-dropping capability of the quick connection mode is limited, and when the gas-liquid pressure in the pipe is slightly higher, the risk of disengagement exists. Therefore, the problem that the existing quick joint anti-falling structure is unreliable is to be improved.
Disclosure of Invention
In order to overcome the defects, the invention aims to provide the anti-falling quick connector and the installation method thereof for the field, so that the technical problems of insufficient anti-falling reliability and complicated anti-falling structure of the existing similar quick connector are solved. The purpose is realized by the following technical scheme.
An anti-drop quick connector is characterized in that a main connector piece and an auxiliary connector piece are correspondingly connected, the main connector piece is provided with a corrugated straight pipe, the auxiliary connector piece is provided with a pipe fitting with an annular flanging at the end part and a rotary lock sleeve movably sleeved on the outer diameter of the pipe fitting, one end of the rotary lock sleeve is a plane and is abutted against the annular flanging of the pipe fitting, and the outer diameter surface of the rotary lock sleeve is provided with an external thread; the quick connector comprises a connector sleeve and a sealing sleeve for sleeving the corrugated straight pipe, wherein one end of the connector sleeve is provided with an internal threaded hole matched with the external thread of the rotary locking sleeve, the aperture of the internal threaded hole is matched with the external diameter of the sealing sleeve, the other end of the connector sleeve is provided with a through hole, the aperture of the through hole is matched with the external diameter of the corrugated straight pipe of the main connector, and the through hole and the internal threaded hole are arranged in a centering way; when the corrugated straight pipe of the main joint piece extends into the internal threaded hole along the through hole and is sleeved with the sealing sleeve, and the joint sleeve is locked with the rotary lock sleeve, one end of the sealing sleeve abuts against the end part of the pipe fitting of the auxiliary joint piece to form sealing, and the inner wall of the sleeve hole of the sealing sleeve and the outer diameter surface of the corrugated straight pipe of the main joint piece form extrusion sealing; the connector sleeve is structurally characterized in that a section of conical hole which is gradually and greatly arranged towards the inner threaded hole through the perforation is arranged between the perforation of the connector sleeve and the inner threaded hole, a C-shaped clamp spring is arranged at the large hole end of the conical hole, the clamp spring follows the clamp spring, when the end face of the sealing sleeve is extruded in place, the conical hole is embedded into the conical hole along the inclined plane of the conical hole to deform into an O-shaped shape, and the clamp spring which deforms into the O-shaped shape is sleeved and matched with the corrugated groove of the corrugated straight pipe of the main connector to form clamping limit, namely the corrugated straight pipe of the. Through the structure, the thrust to the sealing sleeve when the rotary lock sleeve is screwed with the joint sleeve is utilized, so that the sealing sleeve supports the clamping spring tightly to enter the conical hole of the joint sleeve, the clamping spring is clamped in the corrugated groove of the corrugated straight pipe of the main joint piece after being tightened, the corrugated straight pipe is effectively prevented from being separated from the quick joint, the anti-falling reliability is improved, the whole structure is simple, the processing and the production are easy, and the cost is effectively reduced.
A section of conical hole structure which is gradually enlarged from the through hole to the inner threaded hole is arranged between the through hole and the inner threaded hole of the joint sleeve, and a guide sleeve with a conical hole is nested in the inner threaded hole of the joint sleeve, the small hole end of the conical hole of the guide sleeve is aligned and communicated with the through hole of the joint sleeve, the large hole end of the conical hole of the guide sleeve faces the inner threaded hole, and the large hole end is provided with the C-shaped clamp spring. Through this structure, removed the processing that connects the cover bell mouth from to and solved the difficult drawback of adjusting of size after the bell mouth processing, convenient ripple straight tube size according to the main joint spare selects suitable guide pin bushing and jump ring, with the requirement that satisfies the card and ends, reach better card and end the effect. And the guide sleeve is easy to replace when damaged, thereby effectively reducing the maintenance and replacement cost.
The seal cover with be equipped with the annular packing ring that cup joints in main joint spare ripple straight tube between the jump ring, the aperture of annular packing ring matches with the external diameter of ripple straight tube, and the external diameter of annular packing ring matches with the internal thread hole aperture of adapter sleeve. Through this structure, utilize the gasket of rigidity to extrude the jump ring to guarantee that the rule of jump ring deformation is reliable, when effectively having solved the seal cover and directly supporting tight jump ring, the easy embedding seal cover trepanning of jump ring deformation in-process leads to the problem of anticreep function inefficacy.
A section of tapered hole structure which is formed by gradually enlarging the through hole towards the inner threaded hole is arranged between the through hole and the inner threaded hole of the joint sleeve, a guide sleeve with a tapered hole is nested in the inner threaded hole of the joint sleeve, the big hole end of the conical hole of the guide sleeve is opposite to the through hole of the joint sleeve, the aperture of the big hole end is larger than that of the through hole, the small hole end of the conical hole of the guide sleeve faces the inner threaded hole, the aperture of the small hole end is the same as the perforation aperture of the joint sleeve, the C-shaped snap spring is arranged at the large hole end of the conical hole of the guide sleeve, the snap spring is embedded into the conical hole along the inclined plane of the conical hole when the snap spring is mutually extruded in place along with the guide sleeve and the perforation end of the joint sleeve to deform into an O shape, and the clamp spring deformed into an O shape is sleeved and matched with the corrugated groove of the corrugated straight pipe of the main joint piece to form clamping limit, namely the corrugated straight pipe of the main joint piece and the joint sleeve form clamping limit. Through this structure, removed the processing of joint cover bell mouth from equally to and solved the difficult drawback of adjusting of size after the bell mouth processing, convenient ripple straight tube size according to the main joint spare selects suitable guide pin bushing and jump ring, with the requirement that satisfies the card and ends, reach better card and end the effect. And simultaneously, the two side surfaces of the clamp spring are in hard surface abutting contact, the deformation rule of the clamp spring is guaranteed to be reliable, and the problem that the anti-falling function is invalid due to the fact that the clamp spring is easily embedded into a sleeve hole of the seal sleeve in the deformation process when the seal sleeve directly abuts against the clamp spring is effectively solved.
A section of conical hole structure which is gradually enlarged towards the inner threaded hole from the perforation is arranged between the perforation of the joint sleeve and the inner threaded hole, and is replaced by a guide sleeve with double-end conical holes which is nested in the inner threaded hole of the joint sleeve, namely, both ends of the guide sleeve form conical large holes, the middle part of the guide sleeve is a conical small hole, one end of the conical large hole end of the guide sleeve is opposite to the perforation of the joint sleeve, the aperture of the conical large hole end of the guide sleeve is larger than the aperture of the perforation, the aperture of the conical small hole end of the guide sleeve is the same as the aperture of the perforation of the joint sleeve, the C-shaped snap springs are arranged at the large hole ends at both ends of the conical hole of the guide sleeve, the snap springs at both sides are embedded into the conical holes along the inclined planes of the conical holes at both ends when the seal sleeve, the guide sleeve and the perforation end of the joint sleeve are mutually extruded in place, the conical holes, namely, the corrugated straight pipe of the main joint piece and the joint sleeve form clamping limit. Through this structure, adopt bi-polar jump ring structure, make to stop between adapter sleeve and the ripple straight tube that the effect is better, the anticreep performance is stronger.
The corrugation of the corrugated straight pipe of the main joint piece is any one of arc corrugation, annular corrugation and conical corrugation. Through the structure, the clamping spring is matched to form clamping stop at the corrugated groove, and the purpose of reliable anti-falling can be achieved.
And a screwing nut or a screwing handle is integrated on the outer parts of the joint sleeve and the rotary lock sleeve. Through this structure, the relative spiral of convenient joint cover and rotatory lock cover is twisted the operation.
One end of the sealing sleeve, which is pressed against the auxiliary joint piece pipe fitting, is provided with a tapered section which is gradually reduced. Through this structure, when making the seal cover support tight atress, form reliable tight sealed that rises more easily, guarantee the sealed effect that quick-operation joint connects.
The installation method of the anti-drop quick connector comprises the following steps: firstly, the joint sleeve is sleeved with the corrugated straight pipe of the main joint piece, namely the corrugated straight pipe extends into the internal thread hole along the through hole of the joint sleeve; then the clamp spring is sleeved into the corrugated straight pipe of the internal threaded hole, the corrugated straight pipe of the main joint piece and the joint sleeve are kept in a vertical state, and the clamp spring is positioned at the large hole end of the conical hole by means of the dead weight part; and then, the sealing sleeve is sleeved with the corrugated straight pipe in the inner threaded hole, the sealing sleeve is embedded into the inner threaded hole of the joint sleeve, the end part of the sealing sleeve is pre-tightened and abutted with the clamp spring, finally, the rotary lock sleeve of the auxiliary joint piece is screwed and locked with the inner threaded hole of the joint sleeve, when the joint sleeve is locked, the end part of the sealing sleeve is abutted against the clamp spring, the clamp spring of the C type is embedded into the conical hole along the inclined plane of the conical hole of the joint sleeve and is deformed into an O type, namely, the opening of the clamp spring is closed, the clamp spring in the O type is sleeved and matched with the corrugated groove of the corrugated straight pipe of the main joint piece. The installation mode is simple and convenient, and the connection efficiency is high.
The anti-dropping quick connector is simple in overall structure, low in manufacturing cost, capable of effectively enhancing the anti-dropping capacity of the quick connector and guaranteeing the reliability and safety of connection, convenient and fast to install and operate, high in efficiency and suitable for being used as a quick connector for various pipelines, particularly for pipeline connection with high sealing requirements, or improving the structure of similar products.
Drawings
Fig. 1 is a schematic diagram of an explosive structure of the present invention.
Fig. 2 is a partial sectional structural view of fig. 1.
Fig. 3 is a schematic sectional structural view of the mounting connection of the present invention, partially enlarged.
Fig. 4 is a schematic view of an alternative construction of the main fitting of the present invention.
Fig. 5 is a schematic view of an alternative configuration of the main adapter member of the present invention.
Fig. 6 is a schematic sectional view of a modification of the present invention, partially enlarged.
Fig. 7 is a schematic sectional view of a second modification of the present invention, partially enlarged.
Fig. 8 is a schematic diagram of a third cross-sectional structure of a modified embodiment of the present invention, and a part of the diagram is enlarged.
The sequence numbers and names in the figure are: 1. the main joint piece comprises a main joint piece 101, a corrugated straight pipe 2, a joint sleeve 201, a through hole 202, a tapered hole 203, an internal threaded hole 3, a clamp spring 4, an annular gasket 5, a sealing sleeve 6, a pipe fitting 601, an annular flanging 7, a rotary lock sleeve 8 and a guide sleeve.
Detailed Description
The invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1-3, the anti-drop quick coupling correspondingly connects a main coupling member 1 and an auxiliary coupling member, the main coupling member has a corrugated straight pipe 101, the auxiliary coupling member includes a pipe member 6 with an annular flange 601 at the end thereof, and a rotary lock sleeve 7 sleeved on the outer diameter of the pipe member and freely rotating, one end of the rotary lock sleeve is a plane and abuts against the annular flange of the pipe member, and the outer diameter surface of the rotary lock sleeve is provided with external threads. The quick coupling comprises a coupling sleeve 2 and a sealing sleeve 5 for sleeving a corrugated straight pipe, wherein one end of the coupling sleeve is provided with an internal thread hole 203 matched with the external thread of the rotary lock sleeve, and the aperture of the internal thread hole is matched with the external diameter of the sealing sleeve so as to facilitate the sealing sleeve to be matched and embedded into the internal thread hole. The other end of the joint sleeve is provided with a through hole 201 with the aperture matched with the outer diameter of the corrugated straight pipe of the main joint piece, and the through hole and the internal threaded hole are arranged in a centering way. When the main joint piece is connected with the auxiliary joint piece, the corrugated straight pipe of the main joint piece extends into the internal thread hole along the through hole and is sleeved with the sealing sleeve, when the joint sleeve is locked with the rotary lock sleeve through threads, one end of the sealing sleeve abuts against the end part of the pipe fitting of the auxiliary joint piece to form sealing, and the inner wall of the sleeve hole of the sealing sleeve and the outer diameter surface of the corrugated straight pipe of the main joint piece form extrusion sealing. Be equipped with one section and be gradually big tapered hole 202 that sets up towards the screw hole by the perforation between the perforation of adapter sleeve and the internal thread hole, the macropore end of tapered hole is equipped with the jump ring 3 of C type, is equipped with between jump ring and the seal cover and cup joints in the annular packing ring 4 of main joint spare ripple straight tube, and the aperture of annular packing ring matches with the external diameter of ripple straight tube, and the external diameter of annular packing ring matches with the internal thread hole aperture of adapter sleeve. When the clamp spring is extruded along the end face of the sealing sleeve, the clamp spring is embedded into the conical hole along the inclined plane of the conical hole to deform into an O shape, and the clamp spring deformed into the O shape is sleeved and matched with the corrugated groove of the corrugated straight pipe of the main joint piece to form clamping limit, namely the corrugated straight pipe of the main joint piece and the joint sleeve form clamping limit.
When the anti-drop quick connector is used, the connector sleeve 2 is firstly sleeved with the corrugated straight pipe 101 of the main connector 1, namely, the corrugated straight pipe extends into the internal threaded hole 203 along the through hole 201 of the connector sleeve; then, the clamp spring 3 and the annular gasket 4 are sequentially sleeved into the corrugated straight pipe with the internal threaded hole, the corrugated straight pipe and the joint sleeve of the main joint piece are kept in a vertical state, and the clamp spring is positioned at the large hole end of the conical hole 202 by means of the dead weight part; then, sleeving the sealing sleeve 5 on the corrugated straight pipe in the internal threaded hole, embedding the sealing sleeve into the internal threaded hole of the joint sleeve, and enabling the end part of the sealing sleeve to abut against the annular gasket and abut against the snap spring in advance; and finally, screwing and locking the rotary lock sleeve 7 of the auxiliary joint piece and the inner threaded hole of the joint sleeve, wherein when the joint sleeve is locked, the end part of the seal sleeve abuts against the annular gasket, and the annular gasket extrudes the clamp spring, so that the C-shaped clamp spring is embedded into the conical hole along the inclined plane of the conical hole of the joint sleeve and deforms into an O shape, namely the opening of the clamp spring is closed, and the O-shaped clamp spring is sleeved and matched in the corrugated groove of the corrugated straight pipe of the main joint piece. The inside diameter of the clamp spring is located between the outside diameter of the corrugated straight pipe and the outside diameter of the corrugated groove, the outside diameter of the clamp spring is located between the small hole end aperture and the large hole end aperture of the conical hole of the joint sleeve, namely, the clamp spring effectively stops and limits the corrugated straight pipe of the main joint piece and the conical hole of the joint sleeve, and the purpose of preventing the quick joint from falling off after connection is achieved.
Besides the above-mentioned scheme structure, the following three alternative scheme structures can also be adopted.
As shown in fig. 6, a structure of an alternative scheme is mainly to replace the structure in which the tapered hole 202 is arranged between the through hole 201 and the internal threaded hole 203 of the joint sleeve 2 with a guide sleeve 8 with a tapered hole which is nested in the internal threaded hole of the joint sleeve, the small hole end of the tapered hole of the guide sleeve is aligned and communicated with the through hole of the joint sleeve, the large hole end of the tapered hole of the guide sleeve faces the internal threaded hole, the large hole end is provided with a C-shaped snap spring 3, and the rest structures are the same as the structure of the scheme. Through this scheme structure, removed the processing that connects the cover bell mouth from to and solved the difficult drawback of adjusting of size after the bell mouth processing, convenient ripple straight tube size according to the main joint spare selects suitable guide pin bushing and jump ring, with the requirement that satisfies the card and ends, reach better card and end the effect. And the guide sleeve is easy to replace when damaged, thereby effectively reducing the maintenance and replacement cost.
Fig. 7 shows a scheme structure replacing the second scheme, which also replaces the structure with the tapered hole 202 between the through hole 201 and the internal threaded hole 203 of the joint sleeve 2 with a guide sleeve 8 with a tapered hole embedded in the internal threaded hole of the joint sleeve, and the difference lies in that the large hole end of the tapered hole of the guide sleeve is opposite to the through hole of the joint sleeve, the aperture of the large hole end is larger than the aperture of the through hole, the small hole end of the tapered hole of the guide sleeve faces the internal threaded hole, the aperture of the small hole end is the same as the aperture of the through hole of the joint sleeve, the large hole end of the tapered hole of the guide sleeve is provided with a C-shaped snap spring 3, the snap spring is embedded into the tapered hole along the inclined plane of the tapered hole to deform into an O shape along with the mutual extrusion of the through hole of the guide sleeve and the joint sleeve, and the deformed snap spring in the O. That is, the annular gasket is omitted from the structure, the same purpose as that of the above alternative can be achieved, and the cost of the fitting is reduced.
The structure of the third alternative scheme is shown in figure 8, the structure that a conical hole 202 is arranged between a through hole 201 of a joint sleeve 2 and an internal thread hole 203 is replaced by a guide sleeve 8 with a double-end conical hole which is nested in the internal thread hole of the joint sleeve, namely, both ends of the guide sleeve form a conical big hole, the middle part is a conical small hole, one end of the conical big hole end of the guide sleeve is opposite to the through hole of the joint sleeve, the aperture of the conical big hole end of the guide sleeve is larger than that of the through hole, the aperture of the conical small hole end of the guide sleeve is the same as that of the joint sleeve, C-shaped clamp springs 3 are arranged at the big hole ends at both ends of the conical hole of the guide sleeve, the clamp springs at both sides are embedded into the conical holes along the inclined planes of the conical holes at both ends to be deformed into an O shape when the seal sleeve 5, the guide sleeve and the through hole end of the joint sleeve are mutually extruded in place, namely, the corrugated straight pipe of the main joint piece and the joint sleeve form clamping limit.
The corrugation of the corrugated straight pipe 101 of the main joint part 1 shown in fig. 1 is arc-shaped corrugation, as shown in fig. 4 and 5, the corrugation of the corrugated straight pipe can also adopt annular corrugation or conical corrugation, or other structures capable of forming a corrugation groove and forming a clamping stop at the corrugation groove by matching with the clamp spring 3, and the purpose of reliable anti-falling can also be achieved.
In each of the above-mentioned structure schemes, in order to facilitate the operation of screwing and locking the joint sleeve 2 and the rotary lock sleeve 7, a screwing nut or a screwing handle is integrated on the outer portions of the joint sleeve and the rotary lock sleeve.
Furthermore, in order to ensure that the sealing sleeve 5 is more reliable when abutting against the tightening sealing along with the screwing locking sleeve, one end of the sealing sleeve abutting against the auxiliary joint piece pipe fitting 6 is provided with a tapered section which is gradually reduced.
The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Obvious modifications, substitutions or simple combinations of the present invention by a person of ordinary skill in the art in combination with the prior art are also within the scope of the present invention as defined by the appended claims.
Claims (9)
1. An anti-drop quick connector is characterized in that a main connector (1) and an auxiliary connector are correspondingly connected, the main connector is provided with a corrugated straight pipe (101), the auxiliary connector is provided with a pipe fitting (6) with an annular flange (601) at the end part and a rotary lock sleeve (7) movably sleeved on the outer diameter of the pipe fitting, one end of the rotary lock sleeve is a plane and is abutted against the annular flange of the pipe fitting, and the outer diameter surface of the rotary lock sleeve is provided with an external thread; the quick connector comprises a connector sleeve (2) and a sealing sleeve (5) for sleeving a corrugated straight pipe, wherein one end of the connector sleeve is provided with an internal threaded hole (203) matched with the external thread of the rotary locking sleeve, the aperture of the internal threaded hole is matched with the external diameter of the sealing sleeve, the other end of the connector sleeve is provided with a through hole (201) matched with the external diameter of the corrugated straight pipe of the main connector, and the through hole and the internal threaded hole are arranged in a centering way; when the corrugated straight pipe of the main joint piece extends into the internal threaded hole along the through hole and is sleeved with the sealing sleeve, and the joint sleeve is locked with the rotary lock sleeve, one end of the sealing sleeve abuts against the end part of the pipe fitting of the auxiliary joint piece to form sealing, and the inner wall of the sleeve hole of the sealing sleeve and the outer diameter surface of the corrugated straight pipe of the main joint piece form extrusion sealing; the connector is characterized in that a tapered hole (202) which is gradually and greatly arranged from the through hole to the inner threaded hole is arranged between the through hole (201) of the connector sleeve (2) and the inner threaded hole (203), a large hole end of the tapered hole is provided with a C-shaped clamp spring (3), the clamp spring follows the tapered hole and is embedded into the tapered hole along the inclined surface of the tapered hole to deform into an O shape when the end surface of the sealing sleeve (5) is extruded in place, and the O-shaped clamp spring is sleeved and matched with the corrugated groove of the corrugated straight pipe (101) of the main connector (1) to form clamping limit, namely the corrugated straight pipe of the main connector and the connector sleeve form clamping limit.
2. The anti-drop quick coupling according to claim 1, characterized in that a section of tapered hole (202) which is gradually enlarged towards the inner threaded hole from the through hole is arranged between the through hole (201) of the coupling sleeve (2) and the inner threaded hole (203) so that a guide sleeve (8) with a tapered hole is nested in the inner threaded hole of the coupling sleeve, the small hole end of the tapered hole of the guide sleeve is aligned and communicated with the through hole of the coupling sleeve, the large hole end of the tapered hole of the guide sleeve faces the inner threaded hole, and the large hole end is provided with the C-shaped clamp spring (3).
3. The anti-drop quick connector according to claim 1 or 2, characterized in that an annular gasket (4) sleeved on the corrugated straight pipe (101) of the main connector (1) is arranged between the sealing sleeve (5) and the clamp spring (3), the aperture of the annular gasket is matched with the outer diameter of the corrugated straight pipe, and the outer diameter of the annular gasket is matched with the aperture of the internal thread hole (203) of the connector sleeve (2).
4. The anti-drop quick connector according to claim 1, characterized in that a section of tapered hole (202) which is gradually enlarged towards the inner threaded hole from the perforation is arranged between the perforation (201) of the connector sleeve (2) and the inner threaded hole (203) to replace a structure that a guide sleeve (8) with a tapered hole is nested in the inner threaded hole of the connector sleeve, the large hole end of the tapered hole of the guide sleeve is opposite to the perforation of the connector sleeve, the aperture of the large hole end is larger than that of the perforation, the small hole end of the tapered hole of the guide sleeve faces towards the inner threaded hole, the aperture of the small hole end is the same as that of the perforation of the connector sleeve, the large hole end of the tapered hole of the guide sleeve is provided with the C-shaped snap spring (3), the snap spring is embedded in the tapered hole along the inclined plane of the tapered hole to be deformed into an O shape when the guide sleeve and the perforation end of the connector sleeve are mutually extruded in place, and the O-shaped snap spring is sleeved and matched with the corrugated groove, namely, the corrugated straight pipe of the main joint piece and the joint sleeve form clamping limit.
5. The anti-drop quick coupling according to claim 1, characterized in that a tapered hole (202) is provided between the bore (201) of the coupling sleeve (2) and the female screw hole (203) and gradually enlarged toward the female screw hole, and a guide sleeve (8) with a double-ended tapered hole is inserted into the female screw hole of the coupling sleeve, i.e. both ends of the guide sleeve are formed with tapered large holes, the middle part is a tapered small hole, one tapered large hole end of the guide sleeve is opposite to the bore of the coupling sleeve, the diameter of the tapered large hole end of the guide sleeve is larger than that of the bore, the diameter of the tapered small hole end of the guide sleeve is the same as that of the bore of the coupling sleeve, the large hole ends of the tapered hole of the guide sleeve are provided with the C-shaped clamp springs (3), and the clamp springs on both sides are inserted into the tapered hole along the inclined planes of the tapered holes of the coupling sleeve when the clamp sleeve, the guide sleeve and the bore ends of the coupling, and the clamp spring deformed into an O shape is sleeved and matched with the corrugated groove of the corrugated straight pipe (101) of the main joint piece (1) to form clamping limit, namely the corrugated straight pipe of the main joint piece and the joint sleeve form clamping limit.
6. The anti-drop quick connector according to claim 1, wherein the corrugation of the corrugated straight pipe (101) of the main connector (1) is any one of arc corrugation, annular corrugation and conical corrugation.
7. The anti-drop quick connector according to claim 1, characterized in that a screwing nut or a screwing handle is integrated on the outer portions of the connector sleeve (2) and the rotary lock sleeve (7).
8. Anti-drop quick coupling according to claim 1, characterized in that the end of the sealing sleeve (5) against the secondary coupling member tube (6) is provided with a tapered section.
9. The installation method of the anti-drop quick connector as claimed in claim 1, characterized in that the installation method comprises: firstly, the joint sleeve (2) is sleeved with the corrugated straight pipe (101) of the main joint piece (1), namely the corrugated straight pipe extends into an internal threaded hole (203) along a through hole (201) of the joint sleeve; then the clamp spring (3) is sleeved into the corrugated straight pipe of the internal threaded hole, the corrugated straight pipe of the main joint piece and the joint sleeve are kept in a vertical state, and the clamp spring is partially positioned at the large hole end of the conical hole (202) by means of self weight; and then, the sealing sleeve (5) is sleeved with the corrugated straight pipe in the internal threaded hole, the sealing sleeve is embedded into the internal threaded hole of the joint sleeve, the end part of the sealing sleeve is pre-tightened and abutted with the clamp spring, finally, the rotary lock sleeve (7) of the auxiliary joint piece and the internal threaded hole of the joint sleeve are screwed and locked, when the clamp spring is locked, the end part of the sealing sleeve abuts against the clamp spring, the clamp spring of the C type is deformed into an O-shaped shape along the inclined plane of the conical hole of the joint sleeve embedded into the conical hole (202), namely, the opening of the clamp spring is closed, the clamp spring in the O-shaped shape is sleeved and matched with the corrugated groove of the corrugated straight pipe of the main joint piece to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118820.XA CN110878869A (en) | 2019-11-15 | 2019-11-15 | Anti-drop quick connector and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118820.XA CN110878869A (en) | 2019-11-15 | 2019-11-15 | Anti-drop quick connector and mounting method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110878869A true CN110878869A (en) | 2020-03-13 |
Family
ID=69728826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911118820.XA Pending CN110878869A (en) | 2019-11-15 | 2019-11-15 | Anti-drop quick connector and mounting method thereof |
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| Country | Link |
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| CN (1) | CN110878869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734896A (en) * | 2020-05-29 | 2020-10-02 | 宁波天鑫金属软管有限公司 | Anti-drop quick pipe joint and anti-drop connection method thereof |
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| CN208670327U (en) * | 2018-08-28 | 2019-03-29 | 台州同洋管业有限公司 | A kind of gas hose |
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| JP2000310375A (en) * | 1999-04-27 | 2000-11-07 | Benkan Corp | Connecting device of flexible pipe and coupling |
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