CN114484118B - Joint - Google Patents
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- Publication number
- CN114484118B CN114484118B CN202210105403.7A CN202210105403A CN114484118B CN 114484118 B CN114484118 B CN 114484118B CN 202210105403 A CN202210105403 A CN 202210105403A CN 114484118 B CN114484118 B CN 114484118B
- Authority
- CN
- China
- Prior art keywords
- sleeve
- mandrel
- claw
- matched
- functional surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 210000000078 claw Anatomy 0.000 claims description 49
- 230000007704 transition Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
Classifications
-
- 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
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/0847—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of hooks
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention provides a joint, which comprises a plurality of clamping jaws, a mandrel, an outer sleeve, a plurality of steel balls, a first spring, a second spring, a middle and large sleeve, a rear cover, a quick-plug male head, a first screw, a first sealing ring, a second screw and a cylindrical pin, wherein the clamping jaws are arranged on the middle and large sleeve; the joint provided by the invention realizes that the flat-open of the clamping jaw in the diameter direction is changed into the rotation along the cylindrical pin or similar axial direction, so that the clamping jaw moves more smoothly, the clamping stagnation of the clamping jaw in the moving process is effectively prevented, and meanwhile, the opening of the clamping jaw is larger, so that the clamping jaw is more convenient to butt joint with a workpiece to be inflated.
Description
Technical Field
The invention belongs to the field of inflation, and particularly relates to a joint.
Background
The existing joint is a common product in the field of industrial production, in particular to the helium gas filling industry. How to connect the workpiece to be inflated with the joint in a direct and stable way directly affects the inflation quality of the workpiece. At present, a mode is generally adopted in which a claw is arranged at an inflation port of a joint, when an inflatable workpiece is required to be inflated, the claw is opened in parallel, after the relative position of the inflatable workpiece and the joint is determined, the claw is closed, the claw is fixed on the inflatable workpiece, and stable connection is formed between the inflatable workpiece and the joint under the action of the claw.
However, the existing clamping jaw can only be opened in parallel, the opening is smaller, axial acting force is required to be converted into acting force for controlling the parallel opening of the clamping jaw under the action of a spring, the clamping jaw is easy to clamp, and then the clamping jaw cannot be normally opened or closed, so that the inflation quality and the inflation efficiency are affected.
Therefore, there is a need for a joint that has a large jaw opening and that can effectively solve the technical problem of easy clamping of the jaws.
Disclosure of Invention
In order to achieve the aim, the invention provides a connector which comprises a plurality of clamping jaws, a mandrel, an outer sleeve, a plurality of steel balls, a first spring, a second spring, a middle large sleeve, a rear cover, a quick-plug male head and a first screw, wherein the clamping jaws are arranged on the middle large sleeve;
the inner part of the mandrel is provided with a first stepped through hole, the outer circumference of the mandrel is provided with a stepped circular ring for supporting the steel ball, the inner part of the rear cover is provided with a first stepped blind hole, the outer circumference of the rear cover is provided with a plurality of first threaded holes matched with first screws, the second springs are arranged in the first stepped through hole of the mandrel and the first stepped blind hole of the rear cover, and the second springs are in a compression state; the quick plug male head is arranged on the outer circumferential surface of the rear cover;
the middle large sleeve is internally provided with a second stepped through hole matched with the mandrel, a plurality of first through grooves matched with the clamping jaws, a plurality of first through holes for accommodating steel balls to pass through, and a plurality of second through holes matched with the first screws, and is arranged on the circumferential outer surface of the mandrel;
the inside of the rear sleeve is provided with a third stepped through hole for accommodating a first spring, the outer circumferential surface of the rear sleeve is provided with a plurality of third through holes for accommodating first screws to pass through, the first spring is arranged in the third stepped through hole of the rear sleeve, and the first spring is in a compressed state; the rear sleeve is arranged on the outer circumferential surface of the middle and large sleeve;
the inner part of the outer sleeve is communicated, a first functional surface, a first inner boss and a cavity for accommodating the rear sleeve are arranged in the outer sleeve, and the outer sleeve is arranged on the outer circumferential surface of the rear sleeve; the claw is provided with a claw head, a second functional surface matched with the first functional surface of the outer sleeve and a third functional surface matched with the first inner boss of the outer sleeve, and the claw is movably connected with the middle and large sleeve.
When the clamping claw is opened, the step ring on the mandrel jacks up the steel ball, one part of the jacked steel ball is accommodated in the first through hole of the middle and large sleeve, and the other part of the jacked steel ball acts with the outer sleeve to clamp the outer sleeve; at this time, the first inner boss on the outer sleeve acts on the end part of the third functional surface on the claw, the claw is clamped by the outer sleeve, and at this time, the opening angle of the claw is maximum.
When the workpiece to be inflated is in contact with the end face of the mandrel of the connector, the workpiece to be inflated extrudes the mandrel, the movement direction of the mandrel is consistent with that of the workpiece to be inflated, the step ring on the mandrel is separated from the steel ball, the steel ball falls down, at the moment, the steel ball is separated from the outer sleeve, the outer sleeve moves towards the direction close to the workpiece to be inflated under the action of the first spring, the first inner boss on the outer sleeve is in axial contact with the third functional surface on the claw, the first inner boss extrudes the third functional surface on the claw, meanwhile, the first functional surface of the outer sleeve starts to move with the second functional surface of the claw, after the first functional surface of the outer sleeve clamps the second functional surface of the claw, the movement is stopped, at the moment, the claw head of the claw clamps the workpiece to be inflated.
After the inflation is finished, the workpiece to be inflated is separated from the joint, the mandrel moves towards the direction close to the workpiece to be inflated under the action of the second spring, at the moment, the step ring on the mandrel presses the steel ball, the steel ball moves upwards, but the inner surface of the outer sleeve presses the upper surface of the steel ball, and the steel ball cannot move upwards continuously; at the moment, acting force is applied to the outer sleeve in a direction deviating from the workpiece to be inflated; the outer sleeve moves away from the workpiece to be inflated, the inner surface of the outer sleeve is separated from the steel ball, the steel ball moves upwards under the extrusion of the step ring of the mandrel until the steel ball is contacted with the inner surface of the outer sleeve again and is blocked, at the moment, the first inner boss on the outer sleeve acts on the end part of the third functional surface on the claw, the claw is blocked by the outer sleeve, and the claw is opened.
Further, in order to better control opening and closing of the claw, the connector further comprises a cylindrical pin, a fourth through hole matched with the cylindrical pin is formed in the outer circumferential surface of the middle and large sleeve, a fifth through hole matched with the cylindrical pin is formed in the claw, the claw and the middle and large sleeve are movably connected through the cylindrical pin, and the claw can rotate around the cylindrical pin.
Further, in order to better control the movement of the outer sleeve and prevent the outer sleeve from rotating in the circumferential direction in the movement process, the connector further comprises a second screw, a second screw hole matched with the second screw is formed in the outer circumferential surface of the middle and large sleeve, and a single-sided through groove matched with the second screw is formed in the outer circumferential surface of the outer sleeve.
Further, in order to better realize the sealing of the inflatable workpiece and the joint during operation, the joint further comprises a first sealing ring, and the outer circumferential surface of the mandrel is provided with a first annular groove matched with the first sealing ring.
Further, in order to better realize the sealing between the mandrel and the rear sleeve, the joint further comprises a second sealing ring, and the rear sleeve is provided with a second annular groove matched with the second sealing ring.
Further, in order to realize smoother movement of the jaws, the first functional surface of the outer sleeve is composed of a set of planes, curved surfaces and inclined surfaces, and the second functional surface of the jaws is composed of a set of planes, curved surfaces and inclined surfaces.
Further, in order to realize smoother movement of the claw, the third functional surface on the claw is composed of a group of inclined surfaces, arc transition surfaces, inclined surfaces and arc surfaces.
The beneficial effects of the invention are as follows: the joint provided by the invention realizes that the flat-open of the clamping jaw in the diameter direction is changed into the rotation along the cylindrical pin or similar axial direction, so that the clamping jaw moves more smoothly, the clamping stagnation of the clamping jaw in the moving process is effectively prevented, and meanwhile, the opening of the clamping jaw is larger, so that the clamping jaw is more convenient to butt joint with a workpiece to be inflated.
Drawings
FIG. 1 is a schematic view of a joint structure;
FIG. 2 is a schematic view of the structure of FIG. 1 taken along line A-A;
FIG. 3 is a schematic view of the shaft side structure of the joint claw in the closed state;
FIG. 4 is a schematic view of the structure of the joint claw in a closed state;
FIG. 5 is a schematic view of the structure of the joint claw in an opened state;
FIG. 6 is a schematic diagram of a claw structure;
FIG. 7 is a schematic diagram of a jaw shaft side structure;
FIG. 8 is a schematic illustration of a jacket structure;
FIG. 9 is a schematic view of the structure of FIG. 8 in full section along line B-B;
FIG. 10 is a schematic illustration of the sleeve shaft side structure;
FIG. 11 is a schematic diagram of a mandrel structure;
FIG. 12 is a schematic view of the axial side structure of the mandrel;
FIG. 13 is a schematic diagram of the axle side structure of the middle and large sleeves;
FIG. 14 is a schematic view of the medium-large sleeve structure;
FIG. 15 is a schematic view of the rear sleeve shaft side structure;
fig. 16 is a schematic view of the rear cover shaft side structure.
In the figure: 1. the tool comprises a jaw, 2, a mandrel, 3, a jacket, 4, a steel ball, 5, a first spring, 6, a second spring, 7, a middle large sleeve, 8, a rear sleeve, 9, a rear cover, 10, a quick-insert male head, 11, a first screw, 12, a first seal ring, 13, a second seal ring, 14, a second screw, 15, a cylindrical pin, 16, a work piece to be inflated, 101, a second functional surface, 102, a jaw 103, a fifth through hole, 104, a third functional surface, 201, a first stepped through hole, 202, a stepped annular ring, 203, a first annular groove, 301, a first functional surface, 302, a first inner boss, 303, a cavity, 304, a single-sided through groove, 701, a first through groove, 702, a first through hole 703, a second through hole, a fourth through hole, a second stepped through hole, 706, a second screw hole, 801, a third stepped through hole, 802, a third through hole, 901, a second annular groove, 902, a first threaded hole, 903, a first stepped blind hole.
Detailed Description
The invention is described in further detail below with reference to specific embodiments in the drawings. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
The connector comprises a plurality of clamping jaws 1, a mandrel 2, an outer sleeve 3, a plurality of steel balls 4, a first spring 5, a second spring 6, a middle and large sleeve 7, a rear sleeve 8, a rear cover 9, a quick-plug male head 10, a first screw 11, a first sealing ring 12, a second sealing ring 13, a second screw 14 and a cylindrical pin 15.
The mandrel 2 is internally provided with a first stepped through hole 201, and the outer circumference is provided with a stepped circular ring 202 for supporting the steel ball 4 and a first annular groove 203 for accommodating the first sealing ring 12; the inside of the rear cover 9 is provided with a first stepped blind hole 903, the outer circumferential surface of the rear cover is provided with a plurality of first threaded holes 902 matched with the first screws 11 and a second annular groove 901 for accommodating the second sealing rings 13, the second springs 6 are arranged in the first stepped through holes 201 of the mandrel 2 and the first stepped blind hole 903 of the rear cover 9, and the second springs 6 are in a compressed state; the quick-connect plug 10 is arranged on the outer circumferential surface of the rear sleeve 8.
The middle large sleeve 7 is internally provided with a second stepped through hole 705 matched with the mandrel 2, a plurality of first through grooves 701 matched with the clamping jaws 1, a plurality of first through holes 702 for accommodating the steel balls 4 to pass through, a plurality of second through holes 703 matched with the first screws 11, a plurality of fourth through holes 704 matched with the cylindrical pins 15 and second screw holes 706 matched with the second screws 14; the middle and large sleeve 7 is arranged on the circumferential outer surface of the mandrel 2.
The inside of the rear sleeve 8 is provided with a third stepped through hole 801 for accommodating the first spring 5, the outer circumferential surface is provided with a plurality of third through holes 802 for accommodating the first screws 11 to pass through, the first spring 5 is arranged in the third stepped through hole 801 of the rear sleeve 8, and the first spring 5 is in a compressed state; the rear sleeve 8 is arranged on the outer circumferential surface of the middle and large sleeve 7.
The inner part of the outer sleeve 3 is communicated, and a first functional surface 301, a first inner boss 302 and a cavity 303 for accommodating the rear sleeve 8 are arranged in the outer sleeve 3, and a single-sided through groove 304 matched with the second screw 14 is formed. The outer sheath 3 is disposed on the outer circumferential surface of the rear sheath 8.
The claw 1 is provided with a claw head 102, a second functional surface 101 matched with a first functional surface 301 of the outer sleeve 3, a fifth through hole 103 matched with the cylindrical pin 15 and a third functional surface 104 matched with a first inner boss 302 of the outer sleeve 3; the cylindrical pin 15 is used for connecting the clamping jaw 1 and the middle large sleeve 7, and the clamping jaw 1 is movably connected with the middle large sleeve 7.
Preferably, in order to achieve smoother movement of the jaw 1, the first functional surface 301 of the outer sleeve 3 is formed by a set of flat surfaces, curved surfaces and inclined surfaces, and the second functional surface 101 of the jaw 1 is formed by a set of flat surfaces, curved surfaces and inclined surfaces.
Preferably, in order to realize a smoother movement of the jaw 1, the third functional surface 104 on the jaw 1 is composed of a set of inclined surfaces, arc transition surfaces, inclined surfaces and arc surfaces.
When the clamping jaw 1 is opened, the step ring 202 on the mandrel 2 jacks up the steel ball 4, one part of the jacked steel ball 4 is contained in the first through hole 702 of the middle and large sleeve 7, and the other part of the jacked steel ball acts with the outer sleeve 3 to clamp the outer sleeve 3; at this time, the first inner boss 302 on the outer sleeve 3 acts on the end of the third functional surface 104 on the jaw 1, and the outer sleeve 3 clamps the jaw 1, at this time, the jaw 1 opens at the maximum angle.
When the workpiece 16 to be inflated contacts with the end face of the mandrel 2 of the joint, the workpiece 16 to be inflated extrudes the mandrel 2, the movement direction of the mandrel 2 and the workpiece 16 to be inflated keeps consistent, the step ring 202 on the mandrel 2 is separated from the steel ball 4, the steel ball 4 falls down, at the moment, the steel ball 4 is separated from the outer sleeve 3, the outer sleeve 3 moves towards the direction close to the workpiece 16 to be inflated under the action of the first spring 5, the first inner boss 302 on the outer sleeve 3 is in axial contact with the third functional surface 104 on the claw 1, the first inner boss 302 extrudes the third functional surface 104 on the claw 1, meanwhile, the first functional surface 301 of the outer sleeve 3 starts to move with the second functional surface 101 of the claw 1, after the first functional surface 301 of the outer sleeve 3 is clamped with the second functional surface 101 of the claw 1, the movement is stopped, at the moment, the claw 3 is in a closed state, and the claw head 102 of the claw 1 clamps the workpiece to be inflated.
After the inflation is finished, the workpiece 16 to be inflated is separated from the joint, the mandrel 2 moves towards the direction close to the workpiece 16 to be inflated under the action of the second spring 6, at the moment, the step ring 202 on the mandrel 2 presses the steel ball 4, the steel ball 4 moves upwards, but the inner surface of the outer sleeve 3 presses the upper surface of the steel ball 4, and the steel ball 4 cannot move upwards continuously; at this point, a force is applied to the outer sleeve 3 in a direction away from the workpiece 16 to be inflated; the outer sleeve 3 moves away from the workpiece 16 to be inflated, the inner surface of the outer sleeve 3 is separated from contact with the steel ball 4, the steel ball 4 moves upwards under the extrusion of the step ring 202 of the mandrel 2 until the steel ball 4 is contacted with the inner surface of the outer sleeve 3 again and is blocked, at the moment, the first inner boss 302 on the outer sleeve 3 acts on the end part of the third functional surface 301 on the claw 1, the claw 1 is blocked by the outer sleeve 3, and the claw 1 is opened.
Claims (10)
1. The connector is characterized by comprising a plurality of clamping jaws, a mandrel, an outer sleeve, a plurality of steel balls, a first spring, a second spring, a middle and large sleeve, a rear cover, a quick-plug male head and a first screw;
the inner part of the mandrel is provided with a first stepped through hole, the outer circumference of the mandrel is provided with a stepped circular ring for supporting the steel ball, the inner part of the rear cover is provided with a first stepped blind hole, the outer circumference of the rear cover is provided with a plurality of first threaded holes matched with first screws, the second springs are arranged in the first stepped through hole of the mandrel and the first stepped blind hole of the rear cover, and the second springs are in a compression state; the quick plug male head is arranged on the outer circumferential surface of the rear cover;
the middle large sleeve is internally provided with a second stepped through hole matched with the mandrel, a plurality of first through grooves matched with the clamping jaws, a plurality of first through holes for accommodating steel balls to pass through, and a plurality of second through holes matched with the first screws, and is arranged on the circumferential outer surface of the mandrel;
the inside of the rear sleeve is provided with a third stepped through hole for accommodating a first spring, the outer circumferential surface of the rear sleeve is provided with a plurality of third through holes for accommodating first screws to pass through, the first spring is arranged in the third stepped through hole of the rear sleeve, and the first spring is in a compressed state; the rear sleeve is arranged on the outer circumferential surface of the middle and large sleeve;
the inner part of the outer sleeve is communicated, a first functional surface, a first inner boss and a cavity for accommodating the rear sleeve are arranged in the outer sleeve, and the outer sleeve is arranged on the outer circumferential surface of the rear sleeve; the claw is provided with a claw head, a second functional surface matched with the first functional surface of the outer sleeve and a third functional surface matched with the first inner boss of the outer sleeve, and the claw is movably connected with the middle and large sleeve.
2. The joint of claim 1, further comprising a cylindrical pin, wherein the outer circumference of the middle and large sleeves is provided with a fourth through hole matched with the cylindrical pin, the claw is provided with a fifth through hole matched with the cylindrical pin, the claw and the middle and large sleeves are movably connected through the cylindrical pin, and the claw can rotate around the cylindrical pin.
3. The joint according to claim 2, further comprising a second screw, wherein the outer circumferential surface of the middle and large sleeve is provided with a second screw hole matched with the second screw, and the outer circumferential surface of the outer sleeve is provided with a single-sided through groove matched with the second screw.
4. The fitting of claim 1 further comprising a first seal ring, wherein the mandrel outer circumferential surface is provided with a first annular groove that mates with the first seal ring.
5. The fitting of claim 1 further comprising a second seal, wherein the rear housing is provided with a second annular groove that mates with the second seal.
6. A fitting according to claim 3, further comprising a second seal, wherein the rear sleeve is provided with a second annular groove which mates with the second seal.
7. The joint of claim 1 wherein the first functional surface of the outer sleeve is comprised of a set of flat, curved and beveled surfaces and the second functional surface of the pawl is comprised of a set of flat, curved and beveled surfaces.
8. The coupling of claim 2 wherein the first functional surface of the outer sleeve is comprised of a set of flat, curved and beveled surfaces and the second functional surface of the pawl is comprised of a set of flat, curved and beveled surfaces.
9. The joint of claim 1 wherein the third functional surface on the pawl is comprised of a set of inclined surfaces, rounded transition surfaces, inclined surfaces, rounded surfaces.
10. The joint of claim 7 wherein the third functional surface on the pawl is comprised of a set of inclined surfaces, rounded transition surfaces, inclined surfaces, rounded surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210105403.7A CN114484118B (en) | 2022-01-28 | 2022-01-28 | Joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210105403.7A CN114484118B (en) | 2022-01-28 | 2022-01-28 | Joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114484118A CN114484118A (en) | 2022-05-13 |
| CN114484118B true CN114484118B (en) | 2024-01-26 |
Family
ID=81477409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210105403.7A Active CN114484118B (en) | 2022-01-28 | 2022-01-28 | Joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114484118B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0754899A1 (en) * | 1995-07-19 | 1997-01-22 | FIMCIM S.r.l. | Quick-acting connector with shot-off value |
| WO2004072537A1 (en) * | 2003-02-12 | 2004-08-26 | Emer S.R.L. | Clamping jaw type plug coupling device |
| CN104048128A (en) * | 2013-03-12 | 2014-09-17 | 史陶比尔法万举 | Female quick-connect fitting element and quick-connect fitting incorporating the same |
| WO2017006225A1 (en) * | 2015-07-09 | 2017-01-12 | Marco Pozzi | Quick coupling |
| KR20170067988A (en) * | 2015-12-09 | 2017-06-19 | 킴스엔지니어링 주식회사 | Screw coupler |
| CN108375455A (en) * | 2018-01-05 | 2018-08-07 | 爱发科东方真空(成都)有限公司 | A kind of Automatic-falling seal nipple, vacuum leak detector and detection method |
| CN209055293U (en) * | 2018-12-11 | 2019-07-02 | 上海汽车空调配件股份有限公司 | Flute profile quick coupling airtight fixture |
| CN216743335U (en) * | 2022-01-28 | 2022-06-14 | 爱发科东方检测技术(成都)有限公司 | Joint |
-
2022
- 2022-01-28 CN CN202210105403.7A patent/CN114484118B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0754899A1 (en) * | 1995-07-19 | 1997-01-22 | FIMCIM S.r.l. | Quick-acting connector with shot-off value |
| WO2004072537A1 (en) * | 2003-02-12 | 2004-08-26 | Emer S.R.L. | Clamping jaw type plug coupling device |
| CN104048128A (en) * | 2013-03-12 | 2014-09-17 | 史陶比尔法万举 | Female quick-connect fitting element and quick-connect fitting incorporating the same |
| WO2017006225A1 (en) * | 2015-07-09 | 2017-01-12 | Marco Pozzi | Quick coupling |
| KR20170067988A (en) * | 2015-12-09 | 2017-06-19 | 킴스엔지니어링 주식회사 | Screw coupler |
| CN108375455A (en) * | 2018-01-05 | 2018-08-07 | 爱发科东方真空(成都)有限公司 | A kind of Automatic-falling seal nipple, vacuum leak detector and detection method |
| CN209055293U (en) * | 2018-12-11 | 2019-07-02 | 上海汽车空调配件股份有限公司 | Flute profile quick coupling airtight fixture |
| CN216743335U (en) * | 2022-01-28 | 2022-06-14 | 爱发科东方检测技术(成都)有限公司 | Joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114484118A (en) | 2022-05-13 |
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