CN114484118A - Joint - Google Patents
Joint Download PDFInfo
- Publication number
- CN114484118A CN114484118A CN202210105403.7A CN202210105403A CN114484118A CN 114484118 A CN114484118 A CN 114484118A CN 202210105403 A CN202210105403 A CN 202210105403A CN 114484118 A CN114484118 A CN 114484118A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- jaw
- mandrel
- functional surface
- outer sleeve
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 description 7
- 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
Images
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 large sleeve, a rear cover, a quick-insertion male head, a first screw, a first sealing ring, a second screw and a cylindrical pin, wherein the mandrel is arranged on the mandrel; the connector provided by the invention realizes that the jaw is turned to rotate along the direction of the cylindrical pin or the similar axis in the horizontal opening of the jaw in the diameter direction, so that the jaw moves more smoothly, the jaw is effectively prevented from being blocked in the moving process, and meanwhile, the jaw is larger in opening, and is more convenient to be butted 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 industrial production field, in particular to the helium gas filling industry. How to directly and stably connect the workpiece to be inflated with the joint directly influences the inflation quality of the workpiece. The existing common mode is that a claw is arranged at an inflation opening of a joint, when an inflation workpiece needs to be inflated, the claw is opened in parallel, after the relative position of the inflation workpiece and the joint is determined, the claw is closed, the claw is fixed on the inflation workpiece, and the inflation workpiece and the joint are stably connected under the action of the claw.
However, the existing clamping jaws can only be opened in parallel, the openings are small, axial acting force needs to be converted into acting force for controlling the clamping jaws to be opened in parallel under the action of the spring, the clamping jaws are easy to clamp and stagnate, and further the clamping jaws cannot be normally opened or closed, so that the inflating quality and the inflating efficiency are influenced.
Therefore, a joint with a large jaw opening and capable of effectively solving the technical problem that the jaw is easy to be blocked is needed.
Disclosure of Invention
In order to achieve the purpose, 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 large sleeve, a rear cover, a quick-insertion male head and a first screw;
the second spring is arranged in the first stepped through hole of the mandrel and the first stepped blind hole of the rear cover, and is in a compressed state; the quick-insertion male head is arranged on the outer circumferential surface of the rear sleeve;
a second step 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 first screws are formed in the inner part of the middle large sleeve, and the middle large sleeve is arranged on the circumferential outer surface of the mandrel;
a third step through hole for accommodating a first spring is formed in the inner part of the rear sleeve, a plurality of third through holes for accommodating first screws to penetrate are formed in the outer circumferential surface of the rear sleeve, the first spring is arranged in the third step 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 sleeves;
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 clamping jaw is provided with a jaw 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 clamping jaw is movably connected with the large sleeve.
According to the connector, when the clamping jaws are opened, the steel ball is jacked up by the step ring on the mandrel, part of the jacked steel ball is accommodated in the first through hole of the large and medium sleeve, and part of the jacked steel ball acts with the outer sleeve to clamp the outer sleeve; at the moment, the first inner boss on the outer sleeve acts on the end part of the third functional surface on the clamping jaw, the outer sleeve clamps the clamping jaw, and the opening angle of the clamping jaw is the largest.
When a workpiece to be inflated is in contact with the end face of a mandrel of the joint, the workpiece to be inflated extrudes the mandrel, the moving direction of the mandrel is consistent with that of the workpiece to be inflated, a step ring on the mandrel is separated from contact with a steel ball, the steel ball falls down and is separated from contact with an outer sleeve, the outer sleeve moves towards the direction close to the workpiece to be inflated under the action of a first spring, a first inner boss on the outer sleeve is in axial contact with a third functional surface on a jaw, the first inner boss extrudes the third functional surface on the jaw, the first functional surface of the outer sleeve and a second functional surface of the jaw start to move simultaneously, when the second functional surface of the jaw is clamped by the first functional surface of the outer sleeve, the movement stops, the jaw is in a closed state at the moment, and the jaw head of the jaw 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, the step ring on the mandrel extrudes the steel ball, the steel ball moves upwards, but the inner surface of the outer sleeve extrudes the upper surface of the steel ball, and the steel ball cannot move upwards continuously; at the moment, acting force deviating from the direction of the workpiece to be inflated is applied to the outer sleeve; 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 contacts with the inner surface of the outer sleeve again and is clamped to the outer sleeve, the first inner boss on the outer sleeve acts on the end portion of the third functional surface on the clamping jaw, the clamping jaw is clamped by the outer sleeve, and the clamping jaw is opened.
Furthermore, in order to better control the opening and closing of the jaws, the joint further comprises a cylindrical pin, a fourth through hole matched with the cylindrical pin is formed in the outer circumferential surface of the large and medium sleeve, a fifth through hole matched with the cylindrical pin is formed in the jaws, the jaws are movably connected with the large and medium sleeve through the cylindrical pin, and the jaws can rotate around the cylindrical pin.
Furthermore, 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 joint further comprises a second screw, a second screw hole matched with the second screw is formed in the outer circumferential surface of the middle large sleeve, and a single-side through groove matched with the second screw is formed in the outer circumferential surface of the outer sleeve.
Furthermore, for better realization aerify the work piece and connect the during operation sealed, connect still including first sealing washer, the dabber outer periphery is provided with the first ring channel with first sealing washer complex.
Further, for better realization dabber and the back cover between sealed, connect still including the second sealing washer, be provided with on the back cover with second sealing washer complex second ring channel.
Further, in order to realize the smoother movement of the clamping jaw, the first functional surface of the outer sleeve is composed of a group of planes, curved surfaces and inclined surfaces, and the second functional surface of the clamping jaw is composed of a group of planes, curved surfaces and inclined surfaces.
Furthermore, in order to realize smoother movement of the clamping jaw, the third functional surface on the clamping jaw consists of a group of inclined surfaces, arc transition surfaces, inclined surfaces and arc surfaces.
The invention has the beneficial effects that: the connector provided by the invention realizes that the jaw is turned to rotate along the direction of the cylindrical pin or the similar axis in the horizontal opening of the jaw in the diameter direction, so that the jaw moves more smoothly, the jaw is effectively prevented from being blocked in the moving process, and meanwhile, the jaw is larger in opening, and is more convenient to be butted 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 full-section structure of FIG. 1 along line A-A;
FIG. 3 is a schematic axial side view of the coupling jaws in a closed state;
FIG. 4 is a schematic structural view of a closed state of a joint jaw;
FIG. 5 is a schematic view of the structure of the open state of the jaws of the coupling;
FIG. 6 is a schematic view of the structure of the clamping jaws;
FIG. 7 is a schematic side view of the jaw shaft;
FIG. 8 is a schematic view of the jacket structure;
FIG. 9 is a schematic view of the full-section structure of FIG. 8 along line B-B;
FIG. 10 is a schematic view of the side structure of the outer sleeve;
FIG. 11 is a schematic view of a mandrel configuration;
FIG. 12 is a schematic axial side view of the mandrel;
FIG. 13 is a schematic view of a shaft side structure of the middle and large sleeve;
FIG. 14 is a schematic view of a large-medium sleeve structure;
FIG. 15 is a schematic side view of the rear sleeve;
fig. 16 is a schematic view of a rear cover shaft side structure.
In the figure: 1. jaw, 2, mandrel, 3, outer sleeve, 4, steel ball, 5, first spring, 6, second spring, 7, middle large sleeve, 8, rear sleeve, 9, rear cover, 10, quick plug male head, 11, first screw, 12, first sealing ring, 13, second sealing ring, 14, second screw, 15, cylindrical pin, 16, workpiece to be inflated, 101, second functional surface, 102, jaw head, 103, fifth through hole, 104, third functional surface, 201, first step through hole, 202, step ring, 203, first annular groove, 301, first functional surface, 302, first inner boss, 303, cavity, 304, single-sided through groove, 701, first through groove, 702, first through hole, 703, second through hole, 704, fourth through hole, 705, second step through hole, 706, second screw hole, 801, third step through hole, 802, third through hole, 901, second annular groove, 902, 903. a first stepped blind hole.
Detailed Description
The invention is described in further detail below with reference to specific embodiments of the drawings. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
The joint 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-insertion 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.
A first step through hole 201 is formed in the mandrel 2, a step ring 202 for supporting the steel ball 4 and a first annular groove 203 for accommodating a first sealing ring 12 are formed in the outer circumference of the mandrel; a first stepped blind hole 903 is formed in the rear cover 9, a plurality of first threaded holes 902 matched with the first screws 11 and a second annular groove 901 for accommodating the second sealing ring 13 are formed in the outer circumferential surface of the rear cover, the second spring 6 is arranged in the first stepped through hole 201 of the mandrel 2 and the first stepped blind hole 903 of the rear cover 9, and the second spring 6 is in a compressed state; the male quick-insertion head 10 is arranged on the outer circumferential surface of the rear sleeve 8.
A second step 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 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 are formed in the middle large sleeve 7; the large sleeve 7 is arranged on the outer circumferential surface of the mandrel 2.
A third stepped through hole 801 for accommodating the first spring 5 is formed in the rear sleeve 8, a plurality of third through holes 802 for accommodating the first screws 11 to penetrate through are formed in the outer circumferential surface of the rear sleeve 8, 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 large and medium sleeve 7.
The inner portion of the outer sleeve 3 is through, and the inner portion of the outer sleeve 3 is provided with a first functional surface 301, a first inner boss 302, a cavity 303 for accommodating the rear sleeve 8, and a single-side through groove 304 matched with the second screw 14. The outer jacket 3 is disposed on the outer circumferential surface of the rear jacket 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 with the large and medium sleeve 7, and the clamping jaw 1 is movably connected with the large and medium sleeve 7.
Preferably, in order to realize smoother movement of the jaw 1, the first functional surface 301 of the outer sleeve 3 is composed of a set of planes, curved surfaces and inclined surfaces, and the second functional surface 101 of the jaw 1 is composed of a set of planes, curved surfaces and inclined surfaces.
Preferably, in order to realize smoother movement of the jaw 1, the third functional surface 104 on the jaw 1 is composed of a group of inclined surfaces, arc transition surfaces, inclined surfaces and arc surfaces.
In the embodiment, when the clamping jaws 1 are opened, the steel ball 4 is jacked up by the step ring 202 on the mandrel 2, a part of the jacked steel ball 4 is accommodated in the first through hole 702 of the large and medium sleeve 7, and a part of the jacked steel ball 4 acts with the outer sleeve 3 to clamp the outer sleeve 3; at the moment, the first inner boss 302 on the outer sleeve 3 acts on the end part of the third functional surface 104 on the jaw 1, the outer sleeve 3 clamps the jaw 1, and the opening angle of the jaw 1 is the largest.
When a 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 moving 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 contact with the steel ball 4, the steel ball 4 falls down, the steel ball 4 is separated from the contact with the outer sleeve 3 at the moment, 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 axially contacted with the third functional surface 104 on the jaw 1, the first inner boss 302 extrudes the third functional surface 104 on the jaw 1, the first functional surface 301 of the outer sleeve 3 and the second functional surface 101 of the jaw 1 start to move, when the first functional surface 301 of the outer sleeve 3 is clamped with the second functional surface 101 of the jaw 1, the movement stops, and at the moment, the jaw 3 is in a closed state, and the jaw head 102 of the jaw 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, the steel ball 4 is extruded by the step ring 202 on the mandrel 2 at the moment, the steel ball 4 moves upwards, but the upper surface of the steel ball 4 is extruded by the inner surface of the outer sleeve 3, and the steel ball 4 cannot move upwards continuously; at the moment, acting force in the direction departing from the workpiece 16 to be inflated is applied to the outer sleeve 3; the outer sleeve 3 moves away from the workpiece 16 to be inflated, the inner surface of the outer sleeve 3 is separated from 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 contacts the inner surface of the outer sleeve 3 again and is clamped with the outer sleeve 3, the first inner boss 302 on the outer sleeve 3 acts on the end part of the third functional surface 301 on the clamping jaw 1, the outer sleeve 3 clamps the clamping jaw 1, and the clamping jaw 1 is opened.
Claims (10)
1. A joint 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-insertion male head and a first screw;
the second spring is arranged in the first stepped through hole of the mandrel and the first stepped blind hole of the rear cover, and is in a compressed state; the quick-insertion male head is arranged on the outer circumferential surface of the rear sleeve;
a second step 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 first screws are formed in the inner part of the middle large sleeve, and the middle large sleeve is arranged on the circumferential outer surface of the mandrel;
a third step through hole for accommodating a first spring is formed in the inner part of the rear sleeve, a plurality of third through holes for accommodating first screws to penetrate are formed in the outer circumferential surface of the rear sleeve, the first spring is arranged in the third step 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 sleeves;
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 clamping jaw is provided with a jaw 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 clamping jaw is movably connected with the large sleeve.
2. The joint of claim 1, further comprising a cylindrical pin, wherein a fourth through hole is formed in the outer circumferential surface of the large and medium sleeves and is matched with the cylindrical pin, a fifth through hole is formed in the jaw and is matched with the cylindrical pin, the jaw is movably connected with the large and medium sleeves through the cylindrical pin, and the jaw can rotate around the cylindrical pin.
3. The connector of claim 2, further comprising a second screw, wherein a second screw hole is formed on the outer circumferential surface of the middle and large sleeve for cooperating with the second screw, and a single-sided through groove is formed on the outer circumferential surface of the outer sleeve for cooperating with the second screw.
4. The fitting of claim 1 further comprising a first seal ring, wherein the outer circumferential surface of the mandrel is provided with a first annular groove that engages the first seal ring.
5. The fitting of claim 1 further comprising a second seal ring, wherein the rear sleeve is provided with a second annular groove that engages the second seal ring.
6. A coupling according to claim 3, further comprising a second sealing ring, wherein the rear sleeve is provided with a second annular groove for engagement with the second sealing ring.
7. The fitting of claim 1 wherein said first functional surface of said outer sleeve is comprised of a set of flat surfaces, curved surfaces and angled surfaces and said second functional surface of said jaws is comprised of a set of flat surfaces, curved surfaces and angled surfaces.
8. The fitting of claim 2 wherein said first functional surface of said outer sleeve is comprised of a set of flat surfaces, curved surfaces and angled surfaces and said second functional surface of said jaws is comprised of a set of flat surfaces, curved surfaces and angled surfaces.
9. The coupling of claim 1, wherein the third functional surface on the jaws consists of a set of inclined surfaces, radiused transition surfaces, inclined surfaces, radiused surfaces.
10. The coupling of claim 7, wherein the third functional surface on the jaws consists of a set of inclined surfaces, radiused transition surfaces, inclined surfaces, radiused 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 true CN114484118A (en) | 2022-05-13 |
| CN114484118B 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 Coupling Element, And A Quick-connect Coupling Incorporating Such An Element |
| 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 Coupling Element, And A Quick-connect Coupling Incorporating Such An Element |
| 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 |
|---|---|
| CN114484118B (en) | 2024-01-26 |
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