CN113586585A - Self-locking bolt fastener - Google Patents
Self-locking bolt fastener Download PDFInfo
- Publication number
- CN113586585A CN113586585A CN202110776634.6A CN202110776634A CN113586585A CN 113586585 A CN113586585 A CN 113586585A CN 202110776634 A CN202110776634 A CN 202110776634A CN 113586585 A CN113586585 A CN 113586585A
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- base
- screw rod
- locking
- rod
- fastening block
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- 238000001125 extrusion Methods 0.000 claims abstract description 17
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 210000005056 cell body Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005381 potential energy Methods 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000002337 anti-port Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a self-locking bolt fastener, which comprises a screw rod, when the fastener provided by the invention is used, the double effects of looseness prevention and convenient disassembly and assembly can be simultaneously achieved, the screw rod is locked and prevented from loosening by utilizing the structural cooperation among a locking cover, a fastening block and a base, when the screw rod passes through a torsional spring, the torsional spring is extruded to expand and deform so as to facilitate the smooth passing of the screw rod, when the screw rod has the tendency of screwing out after reversely rotating, the elastic force of the torsional spring can enable the screw rod to contract so as to prevent the screw rod from further reversely rotating, thereby achieving the self-locking effect, when the fastener is disassembled, only the locking cover needs to reversely rotate so as to enable a straight surface of an internal thread to be in extrusion contact with a short ejector rod, the deformation potential energy of the spring is released, the sliding locking of the fastening block is released, then the initial end of the torsional spring is extruded inwards to expand the torsional spring so as to release the limitation on the screw rod, the screw rod can be unscrewed fast, and the convenience is to the dismouting of fastener.
Description
Technical Field
The invention relates to the technical field of mechanical fasteners, in particular to a self-locking bolt fastener.
Background
In the prior art, the water inlet valve is usually fixed by means of matching of a screw and a nut, for example, in the technical field of water inlet valves, the water inlet valve is installed in a water inlet tank, when the water inlet valve is fixed, an external thread is usually arranged on a water inlet pipe of the water inlet valve, and then the nut is screwed on the water inlet pipe of the water inlet valve, so that the water inlet valve is fixed.
In bolt construction, the locking of nut fastener and screw rod is only realized through the screw thread, produces certain not hard up after long-term the use easily, and current solution often increases the auto-lock structure on the nut fastener, but the locking of current auto-lock structure be interference fit mostly, and is comparatively inconvenient when the dismouting, and how to realize locking up and dismantle the balance of convenience function and have certain improvement space.
Disclosure of Invention
The present invention is directed to a self-locking bolt fastener to solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a self-locking bolt fastener, contains the screw rod, the body of rod top fixed mounting of screw rod has the nut, and the nut keeps away from the one end center department of the body of rod and has seted up the cross recess, the external screw thread has been seted up in the outside of the body of rod, the body of rod is pegged graft in the base that has elasticity auto-lock structure, and the normal running fit of external screw thread and the inside center department of base, the last surface rotation of base installs the locking lid, and base upper surface symmetry ground slidable mounting has the holding block, the locking is covered and is equipped with the extrusion structure with base matched with, the inside and the normal running fit of holding block, and be equipped with the cell body structure of cooperation base on the holding block outer wall.
Preferably, the edge of the upper surface of the base is provided with a rotating groove, the locking cover is rotatably installed with the base through the rotating groove, the center of the base is provided with a through hole for the screw rod to pass through, the outside of the through hole is provided with a torsion spring, the outside of the torsion spring is symmetrically and fixedly provided with clamping blocks in sliding fit with the fastening blocks, one side of the upper surface of the base is fixedly provided with a limiting block, one side of the torsion spring is provided with a starting end, the starting end is inserted into the limiting block in a sliding manner, one side of the upper surface of the base, which is far away from the limiting block, is symmetrically and fixedly provided with fixing piles, a lantern ring is fixedly installed between the tops of the fixing piles, one side of the torsion spring, which is far away from the starting end, is provided with a first binding end, the first binding end is fixedly inserted into the lantern ring, one side of the torsion spring, which is close to the first binding end, is provided with a second binding end, the second binding end is fixedly installed on the base, and the upper surface of the base is symmetrically and fixedly provided with fixing columns, and the top of fixed column rotates installs the sleeve, sleeve one side fixed mounting has long ejector pin, and the perpendicular side fixed mounting of long ejector pin has short ejector pin on the sleeve, install the spring between sleeve and base.
Preferably, the outer sides of the fastening blocks are symmetrically provided with lugs, folding grooves are formed between the lugs and the fastening block bodies, internal threads are formed in the fastening blocks and meshed with the external threads, the bottom ends of the fastening blocks are symmetrically fixedly provided with clamping grooves in a symmetrical mode, and the clamping grooves are connected with the clamping blocks in a sliding mode.
Preferably, the inclined plane of the folding groove is in extrusion fit with the long ejector rod, and the straight plane of the folding groove 23 is in extrusion fit with the short ejector rod.
Preferably, the locking is covered the surface and is attached to have the protection film, locking lid outside equidistance ground fixed mounting has the flange, locking lid bottom fixed mounting has the connector, and the connector rotates with the rotation groove to be connected, fixed mounting has the boss symmetrically on the inner wall of locking lid, and boss and 23 extrusion contact in groove of rolling over.
Preferably, a through hole is formed in one side of the connector, and the starting end penetrates through the through hole.
Compared with the prior art, the invention has the beneficial effects that:
when the fastener provided by the invention is used, the dual effects of looseness prevention and convenient disassembly and assembly can be simultaneously achieved, the locking of the screw rod is realized by utilizing the structural cooperation among the locking cover, the fastening block and the base, the looseness of the screw rod is prevented, firstly, the screw rod is screwed in and is close to the upper surface of the locking cover, the torsion spring is extruded along the trend when the screw rod passes through the torsion spring, the torsion spring is extruded to expand and deform, the smooth passing of the screw rod is facilitated, when the screw rod has the tendency of reverse rotation, namely screwing out, the starting end of the torsion spring is limited by the inner wall of the limiting block, only can slide along the limiting block and cannot be twisted, the screw rod can be contracted by the elasticity of the torsion spring, the further reverse rotation of the screw rod can be prevented through the contraction of the torsion spring and the limitation of the friction force, the self-locking effect is achieved, in addition, the locking cover needs to rotate for a certain angle until the starting end of the torsion spring is attached to the hole wall of the through hole, when the locking lid rotates, thereby the boss can extrude the internal thread and make the fastening block slide in opposite directions, the internal thread and the torsional spring laminating of fastening block, further prevent the torsion of torsional spring, internal thread inclined plane makes the sleeve rotate with the long ejector pin of extrusion this moment, elastic potential energy is built up in the spring shrink, the realization is to the slip locking of fastening block, when dismantling in addition, only need to cover the antiport with the locking in the above-mentioned flow, make the straight face of internal thread and short ejector pin extrusion contact, the deformation potential energy release of spring, remove the slip locking to the fastening block, then the initiating terminal of inside side extrusion torsional spring, make the torsional spring expand, remove the restriction to the screw rod, the screw rod can screw out fast, the dismouting to the fastener is convenient.
Drawings
FIG. 1 is a schematic view of the overall exploded structure of the present invention;
FIG. 2 is a schematic view of the overall assembly structure of the present invention;
FIG. 3 is a schematic diagram of a partially exploded structure of the present invention;
FIG. 4 is a schematic view of a base structure according to the present invention.
In the figure: 1. a base; 11. a rotating groove; 12. a through hole; 13. a torsion spring; 131. a starting end; 132. a first termination end; 133. a second termination end; 14. a clamping block; 15. a limiting block; 16. fixing the pile; 17. a collar; 18. fixing a column; 181. a sleeve; 182. a long ejector rod; 183. a short ejector rod; 184. a spring; 2. a fastening block; 21. a lug; 22. an internal thread; 23. folding the groove; 24. a card slot; 3. a locking cover; 31. a protective film; 32. a convex plate; 33. a connector; 34. a via hole; 35. a boss; 4. a screw; 41. a rod body; 42. a nut; 43. a cross groove; 44. and (4) external threads.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a self-locking bolt fastener shown in the drawings includes a screw rod 4, a nut 42 is fixedly installed at the top end of a rod body 41 of the screw rod 4, a cross groove 43 is formed in a center of one end of the nut 42, which is far away from the rod body 41, an external thread 44 is formed on the outer side of the rod body 41, the rod body 41 is inserted into a base 1 with an elastic self-locking structure, the external thread 44 is rotatably matched with the center of the inside of the base 1, a locking cover 3 is rotatably installed on the upper surface of the base 1, fastening blocks 2 are symmetrically and slidably installed on the upper surface of the base 1, an extrusion structure matched with the base 1 is arranged on the locking cover 3, the inside of each fastening block 2 is matched with the external thread 44, and a groove structure matched with the base 1 is arranged on the outer wall of each fastening block 2.
When the device is used, the base 1 and the locking cover 3 are installed and combined in a rotating mode in advance, then the base 1 is erected at a screw hole position needing to be fastened, then the screw rod 4 penetrates through the base 1 and is inserted into the screw hole, the screw rod 4 is screwed into the screw hole by screwing the cross groove 43 through a tool such as a screwdriver and the like until the screw cap 42 is close to the upper surface of the locking cover 3, then the locking cover 3 is rotated, and the screw rod 4 is locked and prevented from loosening by means of structural matching among the locking cover 3, the fastening block 2 and the base 1.
Referring to fig. 3 and 4, the edge of the upper surface of the base 1 is provided with a rotation groove 11, the locking cover 3 is rotatably installed with the base 1 through the rotation groove 11, the center of the base 1 is provided with a through hole 12 for allowing the screw rod 4 to pass through, the outside of the through hole 12 is provided with a torsion spring 13, the outside of the torsion spring 13 is symmetrically and fixedly provided with a fixture block 14 in sliding fit with the fastening block 2, one side of the upper surface of the base 1 is fixedly provided with a limit block 15, one side of the torsion spring 13 is provided with a start end 131, the start end 131 is slidably inserted into the limit block 15, one side of the upper surface of the base 1 away from the limit block 15 is symmetrically and fixedly provided with a fixing pile 16, a collar 17 is fixedly provided between the top ends of the fixing piles 16, one side of the torsion spring 13 away from the start end 131 is provided with a first end 132, the first end 132 is fixedly inserted into the collar 17, one side of the torsion spring 13 close to the first end 132 is provided with a second end 133, and second end 133 is fixed on base 1, fixed column 18 is symmetrically fixed on the upper surface of base 1, sleeve 181 is rotatably installed on the top end of fixed column 18, long ejector pin 182 is fixedly installed on one side of sleeve 181, short ejector pin 183 is fixedly installed on the vertical side of long ejector pin 182 on sleeve 181, and spring 184 is installed between sleeve 181 and base 1.
Referring to fig. 3, the outer sides of the fastening block 2 are symmetrically provided with lugs 21, an internal thread 22 is formed between the lugs 21 and the block body of the fastening block 2, the internal thread 22 is formed inside the fastening block 2, the internal thread 22 is engaged with the external thread 44, the bottom end of the fastening block 2 is symmetrically and fixedly provided with clamping grooves 24, and the clamping grooves 24 are slidably connected with the clamping blocks 14.
Referring to fig. 3, the inclined surface of the internal thread 22 is press-fitted with the long post rod 182, and the flat surface of the internal thread 22 is press-fitted with the short post rod 183.
Referring to fig. 3, a protective film 31 is attached to the upper surface of the locking cover 3, convex plates 32 are fixedly mounted on the outer side of the locking cover 3 at equal intervals, a connector 33 is fixedly mounted at the bottom of the locking cover 3, the connector 33 is rotatably connected with the rotating groove 11, bosses 35 are symmetrically and fixedly mounted on the inner wall of the locking cover 3, and the bosses 35 are in pressing contact with the internal threads 22.
Referring to fig. 3, a through hole 34 is formed on one side of the connector 33, and the start end 131 penetrates through the through hole 34.
Through the arrangement, when the fastener provided by the invention is used, the dual effects of looseness prevention and convenience in disassembly and assembly can be achieved at the same time.
Firstly, the screw 4 is screwed in and close to the upper surface of the locking cover 3, when the screw 4 passes through the torsion spring 13, as shown in figure 1, because the trend, the pitch and the inner diameter of the torsion spring 13 are consistent with the inner thread 22, the torsion spring 13 is extruded along the trend of the torsion spring 13 while the screw 4 is screwed in, and the torsion spring 13 is fed along the trend of the torsion spring 13, the inner diameter of the torsion spring 13 is expanded, so that the screw 4 can pass through smoothly, when the screw 4 has the trend of reverse rotation, namely screwing out, the starting end 131 of the torsion spring 13 is limited by the inner wall of the limiting block 15, only can slide along the limiting block 15, but can not be twisted, so that the elasticity of the torsion spring 13 can contract the screw, the screw 4 can be prevented from further reverse rotation through the contraction of the torsion spring 13 and the limitation of the friction force, thereby achieving the self-locking effect, namely preventing the screw 4 from being loosened and strengthening the anti-loosening effect, need cover 3 rotatory certain angle until the pore wall laminating of the initiating terminal 131 of torsional spring 13 and via hole 34, when locking cover 3 rotates, thereby the boss 35 can extrude internal thread 22 and make the fastening block 2 slide in opposite directions, the internal thread 22 and the torsional spring 13 laminating of fastening block 2 further prevent the torsion of torsional spring 13, the inclined plane and the extrusion ejector pin 182 of internal thread 22 make sleeve 181 rotate this moment, spring 184 shrink accumulation elastic potential energy, the realization is to the slip locking of fastening block 2.
When still dismantling, only need with the locking lid 3 antiport in the above-mentioned flow for the straight face of internal thread 22 and short ejector pin 183 extrusion contact, the deformation potential energy release of spring 184 removes the slip locking to the fastening block 2, then inwards extrudees the initiating terminal 131 of torsional spring 13, makes torsional spring 13 expand, removes the restriction to screw rod 4, and screw rod 4 can be unscrewed fast, the convenient dismouting to the fastener.
In this scheme, the theory of use of a auto-lock bolt fastener is as follows: when the device is used, the base 1 and the locking cover 3 are rotatably installed and combined in advance, then the base 1 is erected at a screw hole part needing to be fastened, then the screw rod 4 passes through the base 1 and is inserted into the screw hole, the screw rod 4 is screwed into the screw hole by using a tool such as a screwdriver and the like until the screw cap 42 is close to the upper surface of the locking cover 3, then the locking cover 3 is rotated, the locking of the screw rod 4 is realized by utilizing the structural cooperation among the locking cover 3, the fastening block 2 and the base 1, the loosening is prevented, firstly, the screw rod 4 is screwed into the upper surface of the locking cover 3 and is close to the upper surface of the locking cover 3, when the screw rod 4 passes through the torsion spring 13, as shown in figure 1, because the trend, the pitch and the inner diameter of the torsion spring 13 are consistent with the inner thread 22, the torsion spring 13 is extruded and fed along the trend of the torsion spring 13, the torsion spring 13 is extruded to generate expansion deformation, namely, the inner diameter of the torsion spring 13 is expanded, and the smooth passing of the screw rod 4 is convenient, when the screw rod 4 is in a tendency of reverse rotation, i.e. screwing out, because the starting end 131 of the torsion spring 13 is limited by the inner wall of the limiting block 15, the screw rod can only slide along the limiting block 15 but can not be twisted, the elastic force of the torsion spring 13 can make the torsion spring contract, the screw rod 4 can be prevented from further reverse rotation through the contraction of the torsion spring 13 and the limitation of the friction force, so that the self-locking effect is achieved, i.e. the fastening of the screw rod 4 is prevented from loosening, in addition, in order to enhance the loosening prevention effect, the locking cover 3 needs to be rotated for a certain angle until the starting end 131 of the torsion spring 13 is attached to the hole wall of the via hole 34, when the locking cover 3 rotates, the boss 35 can extrude the internal thread 22 so that the fastening block 2 slides oppositely, the internal thread 22 of the fastening block 2 is attached to the torsion spring 13, further preventing the torsion of the torsion spring 13, at this time, the inclined plane of the folding groove 23 and the extrusion long ejector rod 182 make the sleeve 181 rotate, spring 184 contracts the elastic potential energy of gathering up, realize the slip locking to the fastening block 2, when dismantling again, only need with the locking lid 3 antiport in the above-mentioned flow for the straight face and the short ejector pin 183 extrusion contact of folded groove 23, the deformation potential energy release of spring 184 removes the slip locking to fastening block 2, then inwards extrudees the initiating terminal 131 of torsional spring 13, make torsional spring 13 expand, remove the restriction to screw rod 4, screw rod 4 can screw out fast, the dismouting to the fastener is convenient.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a self-locking bolt fastener, contains screw rod (4), the body of rod (41) top fixed mounting of screw rod (4) has nut (42), and nut (42) keep away from the one end center department of the body of rod (41) and seted up cross recess (43), external screw thread (44), its characterized in that have been seted up in the outside of the body of rod (41): the utility model discloses a locking structure, including the body of rod, base (1), the body of rod (41) is pegged graft in base (1) that has elasticity auto-lock structure, and external screw thread (44) and base (1) inside center department normal running fit, the upper surface of base (1) rotates installs locking lid (3), and base (1) upper surface symmetry ground slidable mounting has fastening block (2), be equipped with on locking lid (3) with base (1) matched with extrusion structure, inside and external screw thread (44) cooperation of fastening block (2), and be equipped with the cell body structure of cooperation base (1) on fastening block (2) outer wall.
2. A self-locking bolt fastener according to claim 1, wherein: the edge of the upper surface of the base (1) is provided with a rotating groove (11), the locking cover (3) is rotatably installed with the base (1) through the rotating groove (11), the center of the base (1) is provided with a through hole (12) through which a screw rod (4) can pass conveniently, a torsion spring (13) is arranged on the outer side of the through hole (12), the outer side of the torsion spring (13) is symmetrically and fixedly provided with a clamping block (14) in sliding fit with the fastening block (2), one side of the upper surface of the base (1) is fixedly provided with a limiting block (15), one side of the torsion spring (13) is provided with a starting end (131), the starting end (131) is inserted into the limiting block (15) in a sliding manner, one side of the upper surface of the base (1), far away from the limiting block (15), is symmetrically and fixedly provided with a fixing pile (16), a lantern ring (17) is fixedly arranged between the top ends of the fixing piles (16), one side of the torsion spring (13), far away from the starting end (131), is provided with a first binding end (132), and first end (132) is fixed to be pegged graft in lantern ring (17), torsional spring (13) are close to first end (132) one side and are equipped with second end (133), and second end (133) fixed mounting on base (1), the upper surface of base (1) is fixed mounting fixed column (18) symmetrically, and the top of fixed column (18) rotates and installs sleeve (181), sleeve (181) one side fixed mounting has long ejector pin (182), and the perpendicular side fixed mounting of long ejector pin (182) has short ejector pin (183) on sleeve (181), install spring (184) between sleeve (181) and base (1).
3. A self-locking bolt fastener according to claim 1, wherein: the outside of fastening block (2) all is equipped with lug (21) symmetrically, and opens between lug (21) and fastening block (2) block and is equipped with dog-ear (23), internal thread (22) have been seted up to the inside of fastening block (2), and internal thread (22) and external screw thread (44) meshing, draw-in groove (24) have been seted up to the bottom of fastening block (2) fixed mounting symmetrically, and draw-in groove (24) and fixture block (14) sliding connection.
4. A self-locking bolt fastener according to claim 3, wherein: the inclined plane of the folding groove (23) is in extrusion fit with the long ejector rod (182), and the straight plane of the folding groove (23) is in extrusion fit with the short ejector rod (183).
5. A self-locking bolt fastener according to claim 1, wherein: locking lid (3) upper surface is attached to have protection film (31), locking lid (3) outside equidistance ground fixed mounting has flange (32), locking lid (3) bottom fixed mounting has connector (33), and connector (33) and rotation groove (11) rotate and be connected, fixed mounting has boss (35) symmetrically on the inner wall of locking lid (3), and boss (35) and broken groove (23) extrusion contact.
6. A self-locking bolt fastener according to claim 5, wherein: through hole (34) have been seted up to connector (33) one side, and initiating terminal (131) alternate through hole (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110776634.6A CN113586585A (en) | 2021-07-09 | 2021-07-09 | Self-locking bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110776634.6A CN113586585A (en) | 2021-07-09 | 2021-07-09 | Self-locking bolt fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113586585A true CN113586585A (en) | 2021-11-02 |
Family
ID=78246736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110776634.6A Withdrawn CN113586585A (en) | 2021-07-09 | 2021-07-09 | Self-locking bolt fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113586585A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114476410A (en) * | 2022-03-09 | 2022-05-13 | 刘芳业 | Hydraulic engineering is pressure water tank for drainage station |
-
2021
- 2021-07-09 CN CN202110776634.6A patent/CN113586585A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114476410A (en) * | 2022-03-09 | 2022-05-13 | 刘芳业 | Hydraulic engineering is pressure water tank for drainage station |
| CN114476410B (en) * | 2022-03-09 | 2024-03-22 | 刘芳业 | Hydraulic engineering drainage station is with pressure water tank |
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Application publication date: 20211102 |
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| WW01 | Invention patent application withdrawn after publication |