CN112728259A - Quick connector - Google Patents
Quick connector Download PDFInfo
- Publication number
- CN112728259A CN112728259A CN202011600359.4A CN202011600359A CN112728259A CN 112728259 A CN112728259 A CN 112728259A CN 202011600359 A CN202011600359 A CN 202011600359A CN 112728259 A CN112728259 A CN 112728259A
- Authority
- CN
- China
- Prior art keywords
- connector
- locking
- male connector
- valve clack
- rod
- 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.)
- Withdrawn
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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
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
- F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
- F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
- F16L37/36—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied with two lift valves being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal
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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
- 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
- F16L37/12—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members
- F16L37/127—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members using hooks, pawls or other movable or insertable locking members using hooks hinged about an axis
Abstract
The invention relates to a quick connector, which comprises a male connector and a female connector; the right end of the male connector is provided with an installation head, and the right end face of the installation head is provided with a plurality of fixing rods along the circumferential direction; the middle part of the male connector is provided with a first mounting cavity, the male connector valve clack is connected in the first mounting cavity in a sliding manner, and a first spring is arranged between the left end of the male connector valve clack and the first mounting cavity; the left end of the male connector is provided with a left connector; the female joint is provided with a mounting hole with a left opening, and the right end face of the mounting hole is provided with a plurality of locking mechanisms along the circumferential direction; a second mounting cavity is formed in the middle of the female joint, the female joint valve clack is connected into the second mounting cavity in a sliding mode, and a second spring is arranged between the right end of the female joint valve clack and the second mounting cavity; the right end of the female joint is provided with a right connector; the locking mechanism is arranged in the invention, and the quick connector is connected through the matching of the locking block and the locking rod, so that the connection step is simple and the operation is easy; so that the joint can not cause environmental pollution and oil loss during installation.
Description
Technical Field
The invention belongs to the field of fluid pipeline connection, and particularly relates to a quick connector.
Background
The quick connector is a connecting device which can be used for quickly connecting or disconnecting pipelines and realizing quick assembly and disassembly. The quick connector has a bidirectional non-return function, so that the pipeline is disconnected without leakage, and the quick connector is widely applied to the fields of petroleum, metallurgy, hydropower, engineering machinery, ship equipment and the like. The quick joint connecting structure is the most important part of the quick joint, and the connecting mode and the structure of the quick joint directly determine the use convenience, the reliability and the product quality of the quick joint. Quick-operation joint has public plug and female socket two parts to constitute, and public plug and female socket contain the valve structure, and ordinary quick-operation joint operates complicacy when the butt joint, connects the degree of difficulty big, runs into easily when opening the structure and leads to breaking away when carelessly, has designed neotype quick-operation joint in order to solve these problems.
Disclosure of Invention
The invention aims to provide a quick connector which is simple in structure and reliable in connection.
In order to achieve the above object, the present invention provides the following technical solution, a quick connector, comprising a male connector and a female connector; an installation head is arranged at the right end of the male connector, a plurality of fixing rods are arranged on the right end face of the installation head in the circumferential direction, a penetrating left through hole is horizontally arranged in the installation head, and the axis of the left through hole is perpendicular to the axis of the fixing rods; the left end of the male connector is provided with a left connector; a first mounting cavity is formed in the middle of the male connector, a male connector valve clack used for controlling the connection and disconnection of a left connector and a left through hole is arranged in the first mounting cavity in a sliding mode, a first spring is arranged between the left end of the male connector valve clack and the first mounting cavity, the male connector valve clack is forced to move rightwards by the first spring to close the left through hole, and a horizontal left linkage pin extends rightwards by the male connector valve clack; the female joint is provided with a mounting hole with a left opening, a plurality of locking mechanisms are arranged in the mounting hole along the circumferential direction, and a right through hole penetrating through the right end face of the mounting hole is horizontally arranged; the right end of the female joint is provided with a right connector; a second installation cavity is arranged in the middle of the female joint, a female joint valve clack used for controlling the connection and disconnection of the right connector and the right through hole is arranged in the second installation cavity in a sliding mode, a second spring is arranged between the right end of the female joint valve clack and the second installation cavity, and the second spring forces the female joint valve clack to move leftwards to close the right through hole; a horizontal right linkage pin extends leftwards from the female joint valve clack; the female joint valve clack is horizontally provided with a plurality of sliding pins along the circumferential direction; when the male connector and the female connector are connected, the mounting head extends into the mounting hole, a closed connecting cavity is formed between the male connector and the female connector, the left linkage pin and the right linkage pin push each other, and the valve clack of the male connector compresses the first spring to move leftwards to open the left through hole; the female joint valve clack compresses the second spring to move rightwards, so that the right through hole is opened, and the left connector is communicated with the right connector; and meanwhile, the locking mechanism is matched with the fixed rod to fixedly connect the male connector and the female connector together.
Preferably, the locking mechanism comprises a locking block, a rotating shaft, an automatic locking rod and a tension spring; the rotating shaft is fixedly connected in the mounting hole, the locking block is rotatably connected on the rotating shaft, and the left end of the locking block can be matched with the fixed rod to complete self-locking; a third installation cavity is formed in the right side of the locking block, a self-locking rod is connected in the third installation cavity in a sliding mode, and a shifting groove is formed in the outer side of the third installation cavity; the left part of the self-locking rod extends outwards to form a spring rod, the right part of the self-locking rod extends outwards to form a poke rod matched in the poke groove, and the poke rod is provided with a ring in sliding fit with the female connector; one end of the tension spring is fixedly connected to the spring rod, the other end of the tension spring is fixedly connected to the locking block, and the tension spring forces the self-locking rod to move leftwards and simultaneously forces the locking block to rotate outwards.
Preferably, the right end of the locking piece is provided with a rotation stopping groove, the upper portion of the rotation stopping groove is provided with a first driving portion, the sliding pin pushes the first driving portion to enable the locking piece to rotate outwards by taking the rotating shaft as an axis, the left end of the locking piece is provided with a locking groove matched with the fixed rod, when the self-locking rod extends into the rotation stopping groove, the locking piece cannot rotate outwards the mounting hole to prevent the fixed rod from being separated from the locking groove, the lower portion of the locking groove is provided with a second driving portion, and the fixed rod pushes the second driving portion to enable the locking piece to rotate inwards by taking the rotating shaft as the axis.
Preferably, when the male joint and the female joint are connected, the left linkage pin and the right linkage pin push each other, so that the valve clack of the male joint compresses the first spring to move leftwards, and the left through hole is opened; the female joint valve clack compresses the second spring to move rightwards, so that the left through hole is opened, and the left connector is communicated with the right connector; when the male connector and the female connector move to the fixed rod and the second driving part to touch the position, the fixed rod pushes the locking block to rotate inwards, the locking block rotates to the relative position of the self-locking rod and the rotation stopping groove, and the self-locking rod stretches into the rotation stopping groove leftwards under the action of the tension spring to fixedly connect the male connector and the female connector together.
Preferably, when the male connector and the female connector need to be separated, the ring is shifted to the right, the shifting rod drives the self-locking rod to retract from the rotation stopping groove, the locking block can rotate, then the second spring pushes the female connector valve clack to the left, the sliding pin pushes the first driving portion, the locking block rotates outwards from the mounting hole, the fixing rod and the locking groove are not buckled any more, the male connector and the female connector start to be separated, meanwhile, the first spring pushes the male connector valve clack to the right to close the left through hole, and the second spring pushes the female connector valve clack to the left to close the right through hole.
Compared with the prior art, the invention has the advantages that:
1. the quick connector is connected through the matching of the locking block and the fixed rod, so that the connection step is simple and the operation is easy; when the plug connector is installed, the fixing rod pushes the second driving part to enable the locking block to rotate to fix the fixing rod, and meanwhile, the self-locking rod extends into the rotation stopping groove to prevent the locking block from rotating;
2. the locking block is positioned by using the rotation stopping groove, so that when the quick connector is connected for use, the self-locking rod extends into the rotation stopping groove to limit the rotation of the locking block, the positioning effect of the locking block is better, and the phenomenon of disengagement caused by mistaken touch can be prevented;
3. the valve clack is used for preventing oil in the pipe from leaking after disassembly, the first spring pushes the male connector valve clack rightwards to close the left through hole, and the second spring pushes the female connector valve clack leftwards to close the right through hole, so that environmental pollution and oil loss cannot be caused during connector installation;
4. when the male connector and the female connector are separated, the locking mechanism can be automatically unlocked under the action of the tension spring only by sliding the circular ring, and the disassembly is very convenient.
Drawings
FIG. 1 is a schematic view of the male and female connectors of the present invention in an unlocked state;
FIG. 2 is a schematic view of the male and female connectors of the present invention when connected;
FIG. 3 is a schematic structural view of a male connector of the present invention;
FIG. 4 is a schematic view of the female connector of the present invention;
FIG. 5 is an enlarged view of a portion of the area I of FIG. 1 according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1-5, is a preferred embodiment of the present invention.
A quick connector comprises a male connector 1 and a female connector 2; the right end of the male connector 1 is provided with an installation head 13, the right end face of the installation head 13 is provided with a plurality of fixing rods 12 along the circumferential direction, and a penetrating left through hole 131 is horizontally arranged in the installation head 13; the axis of the left through hole 131 is perpendicular to the axis of the fixing rod 12; the left end of the male connector 1 is provided with a left connector 17; public 1 middle part of the joint is equipped with first installation cavity 15, public joint valve clack 11 sliding connection is in first installation cavity 15 for the break-make of control left interface 17 and left through-hole 131, be equipped with first spring 14 between public joint valve clack 11 left end and the first installation cavity 15, first spring 14 forces public joint valve clack 11 to move right in order to close left through-hole 131, public joint valve clack 11 extends right and is equipped with horizontally left link pin 16.
A mounting hole 22 with a leftward opening is formed in the female connector 2, a plurality of locking mechanisms 23 are arranged in the mounting hole 22 along the circumferential direction, and a right through hole 210 penetrating through the right end face of the mounting hole 22 is horizontally formed; the right end of the female joint 2 is provided with a right connector 29; a second mounting cavity 27 is formed in the middle of the female joint 2, the female joint valve flap 21 is connected in the second mounting cavity 27 in a sliding mode and used for controlling the connection and disconnection between the right connector 29 and the right through hole 210, a second spring 25 is arranged between the right end of the female joint valve flap 21 and the second mounting cavity 27, and the second spring 25 forces the female joint valve flap 21 to move leftwards to close the right through hole 210; the female joint valve clack 21 extends leftwards and is provided with a horizontal right linkage pin 24; the female joint valve flap 21 is horizontally provided with a plurality of sliding pins 26 in the circumferential direction.
When the male connector 1 is connected with the female connector 2, the mounting head 13 extends into the mounting hole 22, a closed connecting cavity 19 is formed between the male connector 1 and the female connector 2, the left linkage pin 16 and the right linkage pin 24 push each other, and the male connector valve clack 11 compresses the first spring 14 to move leftwards, so that the left through hole 131 is opened; the female joint valve clack 21 compresses the second spring 25 to move rightwards, so that the right through hole 210 is opened, and the left connector 17 is communicated with the right connector 29; meanwhile, the locking mechanism 23 is matched with the fixed rod 12 to fixedly connect the male connector 1 and the female connector 2 together.
The locking mechanism 23 comprises a locking block 231, a rotating shaft 232, a self-locking rod 233 and a tension spring 234; the rotating shaft 232 is fixedly connected in the mounting hole 22, the locking block 231 is rotatably connected on the rotating shaft 232, and the left end of the locking block 231 can be matched with the fixed rod 12 to complete self-locking; a third installation cavity 28 is arranged on the right side of the locking block 231, a self-locking rod 233 is connected in the third installation cavity 28 in a sliding manner, and a toggle groove 281 is arranged on the outer side of the third installation cavity 28; a spring rod 2331 is arranged at the left part of the self-locking rod 233 in an outward extending manner, a poke rod 2332 matched in the poke groove 281 is arranged at the right part of the self-locking rod 233 in an outward extending manner, and a circular ring 2333 in sliding fit with the female connector 2 is arranged on the poke rod 2332; one end of the tension spring 234 is fixedly connected to the spring rod 2331, and the other end is fixedly connected to the locking block 231, and the tension spring 234 forces the locking rod 233 to move leftwards and simultaneously forces the locking block 231 to rotate outwards.
The right end of the locking block 231 is provided with a rotation stopping groove 2311, the upper part of the rotation stopping groove 2311 is provided with a first driving part 2314, the sliding pin 26 pushes the first driving part 2314 to enable the locking block 231 to rotate outwards by taking the rotating shaft 232 as an axis, the left end of the locking block 231 is provided with a locking groove 2312 matched with the fixing rod 12, when the self-locking rod 233 extends into the rotation stopping groove 2311, the locking block 231 cannot rotate outwards towards the mounting hole 22 to prevent the fixing rod 12 from being separated from the locking groove 2312, the lower part of the locking groove 2312 is provided with a second driving part 2313, and the fixing rod 12 pushes the second driving part 2313 to enable the locking block 231 to rotate inwards by taking the rotating shaft 232 as an axis.
When the male connector 1 and the female connector 2 are connected, the left linkage pin 16 and the right linkage pin 24 push each other, so that the male connector valve clack 11 compresses the first spring 14 to move leftwards, and the left through hole 131 is opened; the female joint valve clack 21 compresses the second spring 25 to move rightwards, so that the left through hole 131 is opened, and the left connector 17 is communicated with the right connector 29; when the male connector 1 and the female connector 2 move to the position where the fixing rod 12 and the second driving portion 2313 touch each other, the fixing rod 12 pushes the locking block 231 to rotate inward, the locking block 231 rotates to the position where the self-locking rod 233 and the rotation stopping groove 2311 are opposite, and the self-locking rod 233 extends into the rotation stopping groove 2311 to the left under the action of the tension spring 234, so that the male connector 1 and the female connector 2 are fixed.
When the male connector 1 and the female connector 2 need to be separated, the ring 2333 is shifted to the right, the shifting rod 2332 drives the self-locking rod 233 to retract from the rotation stopping groove 2311, the locking block 231 can rotate, then the second spring 25 pushes the female connector valve clack 21 to the left, the sliding pin 26 pushes the first driving part 2314, the locking block 231 rotates towards the outside of the mounting hole 22, the fixing rod 12 is not buckled with the locking groove 2312, the male connector 1 and the female connector 2 start to be separated, meanwhile, the first spring 14 pushes the male connector valve clack 11 to the right, the left through hole 131 is closed, liquid leakage in the left connector 17 is avoided, the second spring 25 pushes the female connector valve clack 21 to the left, the right through hole 210 is closed, and liquid leakage in the right connector 29 is avoided.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A quick coupling, its characterized in that: comprises a male connector (1) and a female connector (2); an installation head (13) is arranged at the right end of the male connector (1), a plurality of fixing rods (12) are arranged on the right end face of the installation head (13) along the circumferential direction, a penetrating left through hole (131) is horizontally arranged in the installation head (13), and the axis of the left through hole (131) is perpendicular to the axis of each fixing rod (12); the left end of the male connector (1) is provided with a left connector (17); a first installation cavity (15) is arranged in the middle of the male connector (1), a male connector valve clack (11) used for controlling the connection and disconnection of a left connector (17) and a left through hole (131) is arranged in the first installation cavity (15) in a sliding mode, a first spring (14) is arranged between the left end of the male connector valve clack (11) and the first installation cavity (15), the male connector valve clack (11) is forced to move rightwards by the first spring (14) to close the left through hole (131), and a horizontal left linkage pin (16) extends rightwards from the male connector valve clack (11);
a mounting hole (22) with a leftward opening is formed in the female joint (2), a plurality of locking mechanisms (23) are arranged in the mounting hole (22) along the circumferential direction, and a right through hole (210) penetrates through the right end face of the mounting hole (22) horizontally; the right end of the female joint (2) is provided with a right connector (29); a second mounting cavity (27) is formed in the middle of the female joint (2), a female joint valve clack (21) used for controlling the connection and disconnection of a right connector (29) and a right through hole (210) is arranged in the second mounting cavity (27) in a sliding mode, a second spring (25) is arranged between the right end of the female joint valve clack (21) and the second mounting cavity (27), and the second spring (25) forces the female joint valve clack (21) to move leftwards to close the right through hole (210); a horizontal right linkage pin (24) extends leftwards from the female joint valve clack (21); the female joint valve clack (21) is horizontally provided with a plurality of sliding pins (26) along the circumferential direction;
when the male connector (1) is connected with the female connector (2), the mounting head (13) extends into the mounting hole (22), a connecting cavity (19) is formed between the male connector (1) and the female connector (2), the left linkage pin (16) and the right linkage pin (24) are mutually pushed, and the male connector valve clack (11) compresses the first spring (14) to move leftwards so as to open the left through hole (131); the female joint valve clack (21) compresses the second spring (25) to move rightwards, so that the right through hole (210) is opened, and the left connector (17) is communicated with the right connector (29); meanwhile, the locking mechanism (23) is matched with the fixed rod (12) to fixedly connect the male connector (1) and the female connector (2) together.
2. A quick coupling according to claim 1, wherein: the locking mechanism (23) comprises a locking block (231), a rotating shaft (232), an automatic locking rod (233) and a tension spring (234); the rotating shaft (232) is fixedly connected in the mounting hole (22), the locking block (231) is rotatably connected on the rotating shaft (232), and the left end of the locking block (231) can be matched with the fixing rod (12) to complete self-locking; a third installation cavity (28) is arranged on the right side of the locking block (231), a self-locking rod (233) is connected in the third installation cavity (28) in a sliding mode, and a shifting groove (281) is formed in the outer side of the third installation cavity (28); a spring rod (2331) is arranged at the left part of the self-locking rod (233) in an outward extending mode, a poke rod (2332) matched with the poke groove (281) is arranged at the right part of the self-locking rod (233) in an outward extending mode, and a circular ring (2333) in sliding fit with the female joint (2) is arranged on the poke rod (2332); one end of the tension spring (234) is fixedly connected to the spring rod (2331), the other end of the tension spring is fixedly connected to the locking block (231), and the tension spring (234) forces the self-locking rod (233) to move leftwards and simultaneously forces the locking block (231) to rotate outwards.
3. A quick coupling according to claim 2, wherein: the locking device is characterized in that a rotation stopping groove (2311) is formed in the right end of the locking block (231), a first driving portion (2314) is arranged at the upper portion of the rotation stopping groove (2311), the sliding pin (26) pushes the first driving portion (2314) to enable the locking block (231) to rotate outwards with the rotating shaft (232) as an axis, a locking groove (2312) matched with the fixing rod (12) is formed in the left end of the locking block (231), when the self-locking rod (233) extends into the rotation stopping groove (2311), the locking block (231) cannot rotate outwards towards the mounting hole (22), the fixing rod (12) is prevented from falling out of the locking groove (2312), a second driving portion (2313) is arranged at the lower portion of the locking groove (2312), and the fixing rod (12) pushes the second driving portion (2313) to enable the locking block (231) to rotate inwards with the rotating shaft (232) as the axis.
4. A quick coupling according to claim 3, wherein: when the male connector (1) is connected with the female connector (2), the left linkage pin (16) and the right linkage pin (24) are mutually pushed, so that the male connector valve clack (11) compresses the first spring (14) to move leftwards, and the left through hole (131) is opened; the female joint valve clack (21) compresses the second spring (25) to move rightwards, so that the left through hole (131) is opened, and the left connector (17) is communicated with the right connector (29); when the male connector (1) and the female connector (2) move to the position where the fixed rod (12) and the second driving part (2313) touch each other, the fixed rod (12) pushes the locking block (231) to rotate inwards, the locking block (231) rotates to the position where the self-locking rod (233) and the rotation stopping groove (2311) are opposite, the self-locking rod (233) extends into the rotation stopping groove (2311) leftwards under the action of the tension spring (234), and the male connector (1) and the female connector (2) are fixedly connected together.
5. A quick coupling according to claim 3, wherein: when the male connector (1) and the female connector (2) need to be separated, the ring (2333) is stirred rightwards, the stirring rod (2332) drives the self-locking rod (233) to retract from the rotation stopping groove (2311), the locking block (231) can rotate, the second spring (25) pushes the female connector valve clack (21) leftwards, the sliding pin (26) pushes the first driving part (2314), the locking block (231) rotates outwards from the mounting hole (22), the fixing rod (12) and the locking groove (2312) are not buckled any more, the male connector (1) and the female connector (2) start to be separated, meanwhile, the first spring (14) pushes the male connector valve clack (11) rightwards to close the left through hole (131), and the second spring (25) pushes the female connector valve clack (21) leftwards to close the right through hole (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600359.4A CN112728259A (en) | 2020-12-29 | 2020-12-29 | Quick connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600359.4A CN112728259A (en) | 2020-12-29 | 2020-12-29 | Quick connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112728259A true CN112728259A (en) | 2021-04-30 |
Family
ID=75610005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011600359.4A Withdrawn CN112728259A (en) | 2020-12-29 | 2020-12-29 | Quick connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112728259A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202957A (en) * | 2021-05-17 | 2021-08-03 | 师海荣 | Axial flow type check valve |
| CN113653872A (en) * | 2021-07-14 | 2021-11-16 | 深圳大学 | Comprehensive connecting assembly of coring robot |
-
2020
- 2020-12-29 CN CN202011600359.4A patent/CN112728259A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202957A (en) * | 2021-05-17 | 2021-08-03 | 师海荣 | Axial flow type check valve |
| CN113653872A (en) * | 2021-07-14 | 2021-11-16 | 深圳大学 | Comprehensive connecting assembly of coring robot |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210430 |
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| WW01 | Invention patent application withdrawn after publication |