CN113775661A - Pressure-controllable tile type expansion shaft - Google Patents
Pressure-controllable tile type expansion shaft Download PDFInfo
- Publication number
- CN113775661A CN113775661A CN202111054845.5A CN202111054845A CN113775661A CN 113775661 A CN113775661 A CN 113775661A CN 202111054845 A CN202111054845 A CN 202111054845A CN 113775661 A CN113775661 A CN 113775661A
- Authority
- CN
- China
- Prior art keywords
- tooth
- driving
- tile
- shaft
- tube
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007789 sealing 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/0829—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial loading of both hub and shaft by an intermediate ring or sleeve
Abstract
The invention relates to the technical field of expansion shafts, and discloses a pressure-controllable tile type expansion shaft which comprises an inner shaft in transmission connection with an external power source, wherein the outer side wall of the inner shaft is provided with a plurality of fan-shaped tiles which can be spliced into a cylinder, and the middle parts of the fan-shaped tiles are provided with chutes facing the shaft. This controllable tile formula inflation axle of pressure, the effort of opening that provides is adjustable, can be applicable to more application occasions, also can be when guaranteeing to fix simultaneously, avoid the effort too big, bad core pipe rises, on the other hand, when the unexpected situation takes place, also can realize unloading the power automatically, avoid taking place rigid destruction, guarantee the intact of equipment, secondly, at the during operation, the centrifugal force that open effort partly can trun into fan-shaped tile, it is less as the stress between fixed drive tooth and the driven tooth promptly, difficult emergence damage and not hard up, and, in terms of the structure, drive the tooth and can keep pasting tightly with the driven tooth all the time, can not take place to become flexible, keep the normal work of inflation axle all the time.
Description
Technical Field
The invention relates to the technical field of expansion shafts, in particular to a pressure-controllable tile type expansion shaft.
Background
The surface of the expansion shaft can be raised, so that the expansion shaft is used for locking an external tubular part and is widely applied to packaging printing, papermaking films and lithium battery equipment.
The expansion shaft is of a hydraulic type, an air pressure type and a mechanical type, the structures of the air pressure and the hydraulic pressure are relatively simple, but the requirement on the sealing performance is high, and meanwhile additional equipment is needed to provide pressure, so that the trend that the mechanical type expansion shaft is generally adopted in the industry at present is achieved, the fixing force provided in the mechanical type expansion shaft is single and unadjustable, if the force applied by the expansion block is not enough, the fixing effect of the core pipe on the expansion shaft cannot be achieved, and if the force applied by the expansion block is too large, the inner wall of the core pipe is possibly damaged due to too large bearing force. On the other hand, if the load applied to the expansion shaft by the core tube exceeds the load of the expansion blocks due to incidental factors, such as machine failure, vibration, etc., it is also easy to cause hard destruction of the expansion blocks and associated machine components, resulting in large losses.
Secondly, the expansion tile is fixed by the mechanical component in the expansion shaft, and after the expansion shaft is used for a long time, the mechanical component is easy to loosen, so that the expansion shaft cannot fix the core pipe.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides the technical scheme of the tile type expansion shaft with controllable pressure, which has the advantages of adjustable staring force, small bearing capacity of a fixed structure and the like and solves the problems in the background technology.
The invention provides the following technical scheme: the utility model provides a controllable tile formula inflation axle of pressure, includes the interior axle of being connected with the transmission of external power source, the lateral wall of interior axle is equipped with a plurality of fan-shaped tiles that can splice into the cylinder, the middle part of fan-shaped tile is equipped with the spout towards the axle, the outer wall of interior axle is equipped with the connection piece that corresponds with the spout, the both ends of fan-shaped tile all have the regulating plate through slider swing joint, be equipped with angle adjustment cover between interior axle and the regulating plate, the inner ring of regulating plate is equipped with driven tooth, the lateral wall of angle adjustment cover is equipped with scalable drive tooth, and when regulating plate and angle adjustment cover's relative rotation, driven tooth can drive the shrink of drive tooth, the shrink power of drive tooth is adjustable, and drives the tooth and shrink to the top and break away from with driven tooth, the regulating plate is equipped with the adjustment groove with the junction of slider.
Preferably, the adjustment groove is inclined outward in a rotation direction of the inner shaft.
Preferably, the angle adjustment cover includes driving tube and adjustment inner tube, threaded connection between driving tube and the adjustment inner tube, the driving tooth run through the lateral wall of driving tube and with the lateral wall swing joint of driving tube, the bottom of driving tooth is connected with the removal pipe through wedge axial, be equipped with the spring between removal pipe and the adjustment inner tube.
Preferably, the side wall of the inner shaft is movably connected with a positioning column, the end part of the positioning column can be tightly attached to the inner wall of the angle adjusting sleeve, the end inside of the inner shaft is movably connected with a loosening rod, and the side wall of the loosening rod is provided with a cushion block corresponding to the positioning column.
Preferably, the inner wall of the adjusting inner tube is provided with a limiting groove, the end face of the positioning column is provided with a wedge-shaped tooth corresponding to the limiting groove, one side of the wedge-shaped tooth is provided with an inclined surface, and the inclined surface faces the screwing direction of the adjusting inner tube.
The invention has the following beneficial effects:
1. this controllable tile formula inflation axle of pressure, the effort of opening that provides is adjustable, can be applicable to more application occasions, also can avoid the effort too big simultaneously when guaranteeing to fix, rises bad core pipe, and on the other hand, when the unexpected situation takes place, also can realize unloading the power automatically, avoids taking place rigid destruction, guarantees the intact of equipment.
2. This controllable tile formula inflation axle of pressure, at the during operation, open effort partly can trun into the centrifugal force of fan-shaped tile, and is less as the stress between fixed drive tooth and the driven tooth promptly, and difficult emergence is damaged and not hard up, and secondly, with regard to the structure, the drive tooth can remain throughout and paste tightly with the driven tooth, can not take place to become flexible, remains the normal work of inflation axle throughout.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side cross-sectional view of the present invention;
FIG. 3 is a partial schematic view of the present invention;
FIG. 4 is a schematic structural view of an angle adjustment sleeve according to the present invention;
FIG. 5 is a schematic view of the release lever of the present invention;
FIG. 6 is a schematic view of the release lever and the angle adjustment sleeve of the present invention.
In the figure: 1. an inner shaft; 2. a sector-shaped tile; 3. a chute; 4. connecting sheets; 5. an adjusting plate; 6. a slider; 7. an adjustment groove; 8. a driven tooth; 9. an angle adjusting sleeve; 91. a drive tube; 92. adjusting the inner pipe; 93. moving the tube; 94. a spring; 10. a drive tooth; 11. a positioning column; 12. loosening the rod; 13. cushion blocks; 14. wedge-shaped teeth; 15. a limiting groove.
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. 2, a pressure-controllable tile type expansion shaft comprises an inner shaft 1 in transmission connection with an external power source, a plurality of fan-shaped tiles 2 capable of being spliced into a cylinder are arranged on the outer side wall of the inner shaft 1, the inner shaft 1 and the fan-shaped tiles 2 are coaxially arranged, a sliding chute 3 facing the shaft is arranged in the middle of each fan-shaped tile 2, a connecting sheet 4 corresponding to the sliding chute 3 is arranged on the outer wall of the inner shaft 1, the connecting sheets 4 correspond to the fan-shaped tiles 2 one by one, the fan-shaped tiles 2 slide along the connecting sheets 4 to change the diameter of the cylinder formed by the fan-shaped tiles 2 and tightly attach to the inner wall of a core barrel, referring to fig. 1, two ends of each fan-shaped tile 2 are movably connected with an adjusting plate 5 through a sliding member 6, the sliding member 6 is composed of a sliding rod with threads, a nut and a gasket, two sides of the sliding rod are fastened through the nut and the gasket, two side end faces of the adjusting plate 5 are clamped, and a proper friction force is kept between the adjusting plate 5 and the nut and the gasket on the two sides of the gasket, so that the adjusting plate 5 and the sliding member 6 can be fixed when not being subjected to external force, referring to fig. 3, an angle adjusting sleeve 9 is arranged between the inner shaft 1 and the adjusting plate 5, the angle adjusting sleeve 9 is sleeved on the outer wall of the inner shaft 1 and can slide relative to the inner shaft 1, the inner ring of the adjusting plate 5 is provided with driven teeth 8, the side wall of the angle adjusting sleeve 9 is provided with telescopic driving teeth 10, and when the adjusting plate 5 and the angle adjusting sleeve 9 rotate relatively, the driven tooth 8 can drive the driving tooth 10 to contract, the contraction force of the driving tooth 10 can be adjusted, and the driving tooth 10 is contracted to the top to be separated from the driven tooth 8, when the acting force between the driving tooth 10 and the driven tooth 8 is larger than the contraction force, the driving tooth 10 slides along the driven tooth 8, the adjusting slot 7 is arranged at the joint of the adjusting plate 5 and the sliding piece 6, when the adjusting plate 5 rotates, the sector tiles 2 are driven to move outwards or inwards, and the diameter of a cylinder formed by the sector tiles 2 is changed.
The adjustment groove 7 is inclined outward in the rotation direction of the inner shaft 1, and the force of rotation is partially converted into the force of opening the sector tiles 2 when the inner shaft 1 rotates.
Referring to fig. 4, the angle adjusting sleeve 9 includes a driving tube 91 and an adjusting inner tube 92, portions of the driving tube 91 and the adjusting inner tube 92 are tightly attached to a side wall of the inner shaft 1 to ensure stability, the driving tube 91 is in threaded connection with the adjusting inner tube 92, a driving tooth 10 penetrates through the side wall of the driving tube 91 and is movably connected with the side wall of the driving tube 91, a moving tube 93 is axially connected to the bottom of the driving tooth 10 through a wedge, the driving tooth 10 interacts with the moving tube 93 to push the moving tube 93 to move when retracting, a spring 94 is disposed between the moving tube 93 and the adjusting inner tube 92, the adjusting inner tube 92 rotates, and is screwed in or out, so that the elastic force of the spring 94 changes, and the acting force required for retracting the driving tooth 10 is controlled.
Referring to fig. 5, wherein the side wall of the inner shaft 1 is movably connected with two positioning posts 11 whose end portions can be tightly attached to the inner wall of the angle adjusting sleeve 9, the positioning posts 11 can limit the rotation of the angle adjusting sleeve 9, two sets of positioning posts 11 are provided, the two sets of positioning posts 11 respectively correspond to the driving tube 91 and the adjusting inner tube 92, the end of the inner shaft 1 is movably connected with a loosening rod 12, the loosening rod 12 penetrates through the end surface of the inner shaft 1 for convenient installation and control, the side wall of the loosening rod 12 is provided with a cushion block 13 corresponding to the positioning post 11, one side of the cushion block 13 is provided with an inclined surface, when the loosening rod 12 is pushed, the positioning post 11 is driven to extend out, the driving tube 91 or the adjusting inner tube 92 is tightly attached, so that the angle adjusting sleeve 9 does not rotate relative to the inner shaft 1, on one hand, the adjusting plate 5 is prevented from rotating by the angle adjusting sleeve 9, the acting force between the adjusting plate and the core tube is reduced, on the other hand, the relative rotation between the driving tube 91 and the adjusting inner tube 92 can also be avoided, the retraction force of the drive tooth 10 is varied.
Referring to fig. 6, a limiting groove 15 is formed in an inner wall of the inner adjusting tube 92, a wedge-shaped tooth 14 corresponding to the limiting groove 15 is formed on an end surface of the positioning post 11, an inclined surface is formed on one side of the wedge-shaped tooth 14, the inclined surface faces a screwing direction of the inner adjusting tube 92, when the force is insufficient and needs to be increased, the driving tube 91 or the inner adjusting tube 92 can be selected without unscrewing the loosening rod 12 to separate the positioning post 11 from the angle adjusting sleeve 9, and the use convenience is improved.
The working principle and the working process of the invention are as follows:
the core pipe sleeve is sleeved on the expansion shaft, the inner adjusting pipes 92 at two ends are rotated, the elastic force of the spring 94 is adjusted, the force required by retraction of the driving teeth 10 is controlled, the angle adjusting sleeve 9 is rotated to a later degree, the driving teeth 10 drive the adjusting plate 5 to rotate, the fan-shaped tiles 2 are enabled to gradually open the inner wall of the tightly-supported core pipe, after the tightly-supported acting force reaches a set value, the driving teeth 10 are retracted and cannot rotate on the driving adjusting plate 5, the phenomenon that the opened acting force is too large is avoided, meanwhile, when the acting force is larger in the moment due to accidents, the force unloading can be achieved.
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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a package does not explicitly list other elements, or also include elements inherent to such processes, methods, articles, or apparatuses.
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 (5)
1. The utility model provides a controllable tile formula inflation axle of pressure, includes interior axle (1) of being connected with external power source transmission, its characterized in that: the outer side wall of the inner shaft (1) is provided with a plurality of fan-shaped tiles (2) which can be spliced into a cylinder, the middle parts of the fan-shaped tiles (2) are provided with chutes (3) facing the shaft, the outer wall of the inner shaft (1) is provided with connecting sheets (4) corresponding to the chutes (3), two ends of each fan-shaped tile (2) are movably connected with an adjusting plate (5) through sliding pieces (6), an angle adjusting sleeve (9) is arranged between the inner shaft (1) and the adjusting plate (5), an inner ring of the adjusting plate (5) is provided with driven teeth (8), the side wall of the angle adjusting sleeve (9) is provided with telescopic driving teeth (10), when the adjusting plate (5) and the angle adjusting sleeve (9) rotate relatively, the driven teeth (8) can drive the driving teeth (10) to contract, the contraction force of the driving teeth (10) is adjustable, and the driving teeth (10) contract to the top and are separated from the driven teeth (8), and an adjusting groove (7) is arranged at the joint of the adjusting plate (5) and the sliding piece (6).
2. A pressure controllable tile expansion shaft according to claim 1, wherein: the adjustment groove (7) is inclined outward in the rotational direction of the inner shaft (1).
3. A pressure controllable tile expansion shaft according to claim 1, wherein: angle adjustment cover (9) are including driving tube (91) and adjustment inner tube (92), threaded connection between driving tube (91) and adjustment inner tube (92), drive tooth (10) run through the lateral wall of driving tube (91) and with the lateral wall swing joint of driving tube (91), the bottom of driving tooth (10) is connected with through the wedge axial and removes pipe (93), it is equipped with spring (94) to remove between pipe (93) and adjustment inner tube (92).
4. A pressure controllable tile expansion shaft according to claim 3, wherein: the side wall of the inner shaft (1) is movably connected with a positioning column (11) of which the end part can be tightly attached to the inner wall of the angle adjusting sleeve (9), the end inside of the inner shaft (1) is movably connected with a loosening rod (12), and the side wall of the loosening rod (12) is provided with a cushion block (13) corresponding to the positioning column (11).
5. A pressure controllable tile expansion shaft according to claim 4, wherein: the inner wall of the adjusting inner tube (92) is provided with a limiting groove (15), the end face of the positioning column (11) is provided with a wedge-shaped tooth (14) corresponding to the limiting groove (15), one side of the wedge-shaped tooth (14) is provided with an inclined plane, and the inclined plane faces the screwing direction of the adjusting inner tube (92).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111054845.5A CN113775661B (en) | 2021-09-09 | Tile type expansion shaft with controllable pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111054845.5A CN113775661B (en) | 2021-09-09 | Tile type expansion shaft with controllable pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113775661A true CN113775661A (en) | 2021-12-10 |
| CN113775661B CN113775661B (en) | 2024-05-10 |
Family
ID=
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4911376A (en) * | 1988-09-14 | 1990-03-27 | Thompson Johnnie W | Expandable shaft |
| CN201258925Y (en) * | 2008-06-24 | 2009-06-17 | 曹雨 | Elastic expansion block ring double-shaft sleeve suspension cross coupling device |
| CN201309777Y (en) * | 2008-08-15 | 2009-09-16 | 王士川 | Novel expansion shaft |
| CN202214038U (en) * | 2011-08-18 | 2012-05-09 | 苏州金韦尔机械有限公司 | Single-pivot no-core type mechanical expanding mandrel |
| CN204369315U (en) * | 2014-12-19 | 2015-06-03 | 四川创越炭材料有限公司 | A kind of multiple-piece combination reducing gets a cylinder |
| CN104875407A (en) * | 2015-05-14 | 2015-09-02 | 天津恒鸿鑫德机械有限公司 | Automobile tire molding drum with taper expansion device |
| WO2016019919A1 (en) * | 2014-08-08 | 2016-02-11 | 杨东佐 | Expansion fastening connection structure and connection method, and expansion fastening connection assembly |
| CN112427666A (en) * | 2020-10-27 | 2021-03-02 | 湖北中油科昊机械制造有限公司 | Expansion mandrel device |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4911376A (en) * | 1988-09-14 | 1990-03-27 | Thompson Johnnie W | Expandable shaft |
| CN201258925Y (en) * | 2008-06-24 | 2009-06-17 | 曹雨 | Elastic expansion block ring double-shaft sleeve suspension cross coupling device |
| CN201309777Y (en) * | 2008-08-15 | 2009-09-16 | 王士川 | Novel expansion shaft |
| CN202214038U (en) * | 2011-08-18 | 2012-05-09 | 苏州金韦尔机械有限公司 | Single-pivot no-core type mechanical expanding mandrel |
| WO2016019919A1 (en) * | 2014-08-08 | 2016-02-11 | 杨东佐 | Expansion fastening connection structure and connection method, and expansion fastening connection assembly |
| CN204369315U (en) * | 2014-12-19 | 2015-06-03 | 四川创越炭材料有限公司 | A kind of multiple-piece combination reducing gets a cylinder |
| CN104875407A (en) * | 2015-05-14 | 2015-09-02 | 天津恒鸿鑫德机械有限公司 | Automobile tire molding drum with taper expansion device |
| CN112427666A (en) * | 2020-10-27 | 2021-03-02 | 湖北中油科昊机械制造有限公司 | Expansion mandrel device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113414693A (en) | Pipeline rust removal device for hydraulic engineering and application method thereof | |
| CN114227836B (en) | On-spot saw-dust rubbish suction processing system of wood working | |
| CN113775661A (en) | Pressure-controllable tile type expansion shaft | |
| CN207777455U (en) | A kind of ball-type torque limiter | |
| CN113775661B (en) | Tile type expansion shaft with controllable pressure | |
| CN114075938A (en) | Self-tightening anti-deflection setting device | |
| CN206846212U (en) | A kind of tunnel IMAQ robot Fast Installation adjustment structure | |
| CN110939630A (en) | Hydraulic cylinder capable of adjusting buffer speed | |
| CN110635616A (en) | Coupling for motor with protection function | |
| CN213452262U (en) | Double-flange limiting expansion joint for valve | |
| CN216444908U (en) | Interim attachment device of construction tower crane | |
| CN213647705U (en) | Pipeline cutting device for hydraulic engineering | |
| CN209130074U (en) | Surely type fluid-flywheel clutch coupling arrangement is filled | |
| CN210504868U (en) | Wrapping bag paper tape rolling dish shifts mechanism | |
| CN215443257U (en) | Grout nozzle for crack repairing | |
| CN208308136U (en) | Material strip devices for taking-up | |
| CN112254508A (en) | Novel rotary kiln is supported for dry process cement manufacture device | |
| CN212335910U (en) | Water conservancy channel construction bank protection builder | |
| CN220037260U (en) | Flange ring piece for rotary driving device | |
| CN218194755U (en) | Clamping device with adjusting structure | |
| CN109538665A (en) | A kind of mechanical wind clip wheel apparatus with worm drive | |
| CN219380554U (en) | Simple drawing device for disassembling sealing end cover | |
| CN216588915U (en) | Novel tidal current energy water turbine self-adjusting hub | |
| CN213201978U (en) | Pipeline coating machine | |
| CN217232268U (en) | Novel outer wall screw hole blocking device |
Legal Events
| 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 | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240414 Address after: Room 301-4, Building 10, No. 1390 Cangxing Street, Cangqian Street, Yuhang District, Hangzhou City, Zhejiang Province, 310000 Applicant after: Hangzhou Xiaoxi Intelligent Technology Co.,Ltd. Country or region after: China Address before: 264000 No. 5, No. 200-44, Zhenshan Road, Zhifu District, Yantai City, Shandong Province Applicant before: Dong Yanlai Country or region before: China |
|
| GR01 | Patent grant |