CN113062908A - Spring pin with quick-release mechanism - Google Patents
Spring pin with quick-release mechanism Download PDFInfo
- Publication number
- CN113062908A CN113062908A CN202110290120.XA CN202110290120A CN113062908A CN 113062908 A CN113062908 A CN 113062908A CN 202110290120 A CN202110290120 A CN 202110290120A CN 113062908 A CN113062908 A CN 113062908A
- Authority
- CN
- China
- Prior art keywords
- head
- assembly
- lateral
- outer side
- blind hole
- 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- Withdrawn
Links
- 238000001125 extrusion Methods 0.000 claims abstract description 38
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding 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
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/02—Bolts or sleeves for positioning of machine parts, e.g. notched taper pins, fitting pins, sleeves, eccentric positioning rings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
-
- 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
- F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
- F16B21/06—Releasable fastening devices with snap-action
- F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention relates to the technical field of hardware assembly parts, in particular to a spring pin with a quick-release mechanism. The spring pin with the quick-release mechanism is used for assembling and disassembling the positioning pin through the top assembling head with the built-in elastic locking mechanism, the size of the positioning pin can be quickly changed as required, so that the spring pin can be adapted to beams and columns with various specifications and sizes, and the application range is very wide; the inside of seting up externally that the built-in outside was adjusted to the shutoff head and is loosened the inside of putting the device and tighten up the cavity, adjust through the outside and loosen and put the device can be quick control locating pin, top assembly head and extrusion spring, make it can the quickly separating dismantle, need not to slot in the beam column outside, do not influence structural strength, and convenient operation reduces the degree of difficulty that the separation was dismantled in the later stage simultaneously.
Description
Technical Field
The invention relates to the technical field of hardware assembly parts, in particular to a spring pin with a quick-release mechanism.
Background
The glass curtain wall is mainly installed by a beam and a column, and is made of aluminum alloy materials. In some building engineering, after the aluminum corner connectors, stainless steel bolts and upright columns are mainly adopted for fixing, drilling is carried out, then the aluminum corner connectors are installed, and finally the aluminum corner connectors are reinforced by bolts and screws. The stability of frame construction has been guaranteed to a certain extent in the application of this kind of mode, but still has certain problem to aspects such as application of manpower, material resources and financial resources, and the extravagant condition is comparatively serious, and constructor's working strength is great. In addition, the arrangement of the cross beams and the vertical columns adopts openings in different forms, but the utilization rate of materials cannot reach corresponding standards, which has certain obstruction to construction engineering. In order to solve the above problems, a new construction technology has been developed by technicians, which mainly uses a stainless steel spring pin structure to connect and fix the stainless steel spring pin.
The spring pin is also called an elastic cylindrical pin and is a headless hollow cylindrical body, an axial groove is formed, and the end parts of two ends of the spring pin are provided with chamfers for positioning, connecting, fixing and the like of parts; good elasticity and shear resistance are required, and the outer diameter of such pins is slightly larger than the assembly bore diameter.
Traditional spring catch simple structure, the specification is single, and the adaptation scope is limited, although convenient assembling, it is very troublesome nevertheless to dismantle in the later stage, need set up rectangular shape control mouth at the link and come to carry out translation shrink control to the location end, and is higher to the requirement of mounted position, destroys the exterior structure of beam column simultaneously, also can cause the influence to overall structure, and later stage dismantlement cost is higher.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problems existing in the background technology, the improved spring pin with the quick-release mechanism is provided, and the problems that the traditional spring pin is simple in structure, single in specification and limited in adaptation range, although later-stage disassembly is very troublesome, the requirement on the installation position is higher, the integral structure is influenced, and the later-stage disassembly cost is higher are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a spring pin with quick detach mechanism, includes outside shutoff head, extrusion spring and locating pin, outside shutoff head link lateral surface on seted up the interior assembly blind hole, extrusion spring one end fixed through inserting the inside and outside shutoff head joint of interior assembly blind hole, the extrusion spring other end is pegged graft and is fixed with the top assembly head, the locating pin link seted up with top assembly head matched with exterior assembly blind hole, top assembly head internally mounted have elasticity locking mechanism, outside shutoff head inside set up the inside chamber of tightening up that is linked together with the interior assembly blind hole, inside tighten up the inside activity of chamber and be equipped with the outside and adjust the loose device of putting, the locating pin pass through elasticity locking mechanism and top assembly head joint fixed.
The lateral limiting blind holes are symmetrically formed in the inner side face of the external assembly blind hole, the elastic locking mechanism comprises an internal telescopic block inserted into the external assembly blind hole, a lateral overturning limiting rod movably assembled on the outer side face of the internal telescopic block and an internal extrusion elastic sheet with elasticity on the inner side face of the lateral overturning limiting rod, and the outer side face of the internal telescopic block is located at the connecting end of the lateral overturning limiting rod and provided with a longitudinal assembly groove.
And an external mounting groove with a built-in assembling rotating shaft is formed in the center of the outer side end of the internal telescopic block.
The outer side surface of the outer blocking head is provided with a lateral adjusting hole communicated with the inside of the inner tightening cavity, the outer side adjusting releasing device comprises a transverse releasing shaft inserted in the inner tightening cavity, lateral limiting discs fixed on two sides of the transverse releasing shaft and an outer linkage pull rope wound on the outer side of the transverse releasing shaft, and the top end of the outer side of the outer linkage pull rope penetrates through the inside of the extrusion spring and is bound and connected with the assembly rotating shaft.
Lateral limiting clamping grooves are symmetrically formed in the inner side face of the inner assembling blind hole.
The transverse releasing shaft is positioned at the top end of the outer side of the lateral adjusting hole and is provided with a lateral control groove.
The inside assembly blind hole medial surface be located inside and tighten up the cavity link and offer the inside fixed slot that is used for fixed extrusion spring, top assembly head lateral surface be located the extrusion spring link and offer the outside fixed slot that is used for fixed extrusion spring.
The invention has the beneficial effects that:
(1) the spring pin with the quick-release mechanism comprises the external plugging head, the extrusion spring and the positioning pin, the positioning pin is assembled and disassembled through the top assembling head with the built-in elastic locking mechanism, the size of the positioning pin can be quickly changed as required, the spring pin can be adapted to beam columns with various specifications and sizes, and the application range is very wide;
(2) an internal tightening cavity with a built-in external side adjusting releasing device is formed in the external plugging head, and the positioning pin, the top assembling head and the extrusion spring can be quickly controlled through the external side adjusting releasing device, so that the positioning pin, the top assembling head and the extrusion spring can be quickly separated and disassembled, grooves do not need to be formed in the outer side of the beam column, the structural strength is not influenced, the operation is convenient, and the difficulty in later-stage disassembling and separating is reduced;
(3) the connecting end of the extrusion spring is arranged in the inner assembly blind hole, the top assembly head can be completely retracted into the inner assembly blind hole under the control of the outer adjusting and releasing device, and the lateral overturning limiting rod is inserted into the inner fixing groove for limiting, so that the storage and transportation are facilitated, and the later-stage disassembly is facilitated;
(4) the elastic locking mechanism and the outer side adjusting and releasing device are in linkage control through the external linkage pull rope, the external linkage pull rope is arranged on the inner side of the extrusion spring, the control is convenient, and meanwhile, the safety can be indirectly improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an internal cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of the elastic locking mechanism of the present invention.
Fig. 4 is a schematic view of the outer adjustment release mechanism of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
FIG. 1, a spring pin with quick detach mechanism that fig. 2 and fig. 3 show, including outside shutoff head 1, extrusion spring 2 and locating pin 3, inside assembly blind hole 4 has been seted up on the 1 link lateral surface of outside shutoff head, 2 one end of extrusion spring is fixed through inserting inside assembly blind hole 4 inside and outside shutoff head 1 joint, 2 other ends of extrusion spring are pegged graft and are fixed with top assembly head 5, the 3 link of locating pin is seted up with top assembly head 5 matched with outside assembly blind hole 6, top assembly head 5 internally mounted has elasticity locking mechanism, outside shutoff head 1 is inside to be seted up the inside cavity 7 that tightens up that is linked together with inside assembly blind hole 4, inside activity of tightening up cavity 7 is equipped with the outside and adjusts the relaxation device, locating pin 3 is fixed through elasticity locking mechanism and top assembly head 5 joints.
Example (b): people drive the outside through the spanner and adjust the releaser and rotate, utilize winding control outside linkage stay cord 15 to tighten up, outside linkage stay cord 15 drives top assembly head 5 withdrawal, drive extrusion spring 2 shrink, make locating pin 3 outwards translate, when translating outside shutoff head 1, locating pin 3 receives and blocks, separate with top assembly head 5, elasticity locking mechanism upset retraction vertical assembly groove 12, then insert side direction spacing draw-in groove 16, it is fixed with outside shutoff head 1 joint inside assembly blind hole 4 at last, only need insert inside the side direction spacing draw-in groove 16 from the opening in the outside shutoff head 1 outside if the separation, control elasticity locking mechanism upset retraction vertical assembly groove 12, top assembly head 5 just can receive extrusion of extrusion spring 2 and pop out, then insert locating pin 3 alright with the completion assembly, install once more.
Further, for the cooperation elasticity assembly is fixed, the spacing blind hole 8 of side direction has been seted up to the symmetry on the 6 medial surfaces of outside assembly blind hole, elasticity locking mechanism is including pegging graft at the inside flexible piece 9 of outside assembly blind hole 6, the activity assembly is at the inside extrusion shell fragment 11 of side direction upset gag lever post 10 and elasticity on the 10 medial surfaces of side direction upset gag lever post on the 9 lateral surfaces of inside flexible piece, vertical assembly groove 12 has been seted up to the 9 lateral surfaces of inside flexible piece located the 10 links of side direction upset gag lever post, furtherly, for the convenience side direction installation, the outside mounting groove of built-in assembly pivot 13 has been seted up to the end central point of the.
Further, in order to conveniently receive and release internal regulation, the lateral regulation hole communicated with the inside of the internal tightening cavity 7 is formed in the outer side surface of the external plugging head 1, the lateral regulation hole is formed in the outer side surface of the external plugging head and comprises a transverse loosening shaft 14 connected with the inside of the internal tightening cavity 7 in an inserting mode, lateral limiting discs 155 fixed to two sides of the transverse loosening shaft 14 and an external linkage pull rope 15 wound on the outer side of the transverse loosening shaft 14, the top end of the outer side of the external linkage pull rope 15 penetrates through the inside of the extrusion spring 2 to be bound with the assembly rotating shaft 13, further, the internal limiting fixing is achieved in a matching mode, and lateral limiting clamping grooves 16 are symmetrically formed in.
Further, in order to facilitate lateral control, a lateral control groove 17 is formed in the top end, located at the outer side of the lateral adjusting hole 13, of the transverse releasing shaft 14. Lateral control recess 17 can be a word structure, cross structure, interior hexagonal structure or outer hexagonal structure, then externally set up the through-hole, utilize bottle opener or spanner to insert inside lateral control recess 17, control through the rotation, further, for cooperation both sides fixed assembly, the inside mounting blind hole 4 medial surface is located inside and tightens up the inside fixed slot 18 that the cavity 7 link was offered and is used for fixed extrusion spring 2, top assembly head 5 lateral surface is located extrusion spring 2 link and offers the outside fixed slot 19 that is used for fixed extrusion spring 2.
The spring pin with the quick-release mechanism comprises an external plugging head 1, an extrusion spring 2 and a positioning pin 3, wherein the positioning pin 3 is assembled and disassembled through a top assembling head 5 with a built-in elastic locking mechanism, so that the size of the positioning pin 3 can be quickly changed as required, the spring pin can be adapted to beam columns with various specifications and sizes, and the application range is very wide; an internal tightening cavity 7 with a built-in external side adjusting releasing device is formed in the external plugging head 1, and the positioning pin 3, the top assembling head 5 and the extrusion spring 2 can be quickly controlled through the external side adjusting releasing device, so that the positioning pin, the top assembling head and the extrusion spring can be quickly separated and disassembled, grooves do not need to be formed in the outer side of a beam column, the structural strength is not influenced, the operation is convenient, and the difficulty in later-stage separation and disassembly is reduced; the connecting end of the extrusion spring 2 is arranged in the inner assembly blind hole 4, the top assembly head 5 can be completely retracted into the inner assembly blind hole 4 under the control of the outer side adjusting and releasing device, and the lateral overturning limiting rod 10 is inserted into the inner fixing groove 18 for limiting, so that the storage and transportation are convenient, and the later-stage disassembly is convenient; the elastic locking mechanism and the outer side adjusting and releasing device are in linkage control through the external linkage pull rope 15, the external linkage pull rope 15 is arranged on the inner side of the extrusion spring 2, control is facilitated, and meanwhile safety can be indirectly improved.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (7)
1. The utility model provides a spring pin with quick detach mechanism, includes outside shutoff head (1), extrusion spring (2) and locating pin (3), characterized by: an inner assembly blind hole (4) is arranged on the outer side surface of the connecting end of the outer plugging head (1), one end of the extrusion spring (2) is clamped and fixed with the external plugging head (1) by being inserted into the internal assembly blind hole (4), the other end of the extrusion spring (2) is fixedly provided with a top assembly head (5) in an inserting way, the connecting end of the positioning pin (3) is provided with an external assembly blind hole (6) matched with the top assembly head (5), an elastic locking mechanism is arranged in the top assembling head (1), an internal tightening cavity (7) communicated with the internal assembling blind hole (4) is arranged in the external plugging head (1), the inner part of the inner tightening chamber (7) is movably provided with an outer side adjusting and releasing device, the positioning pin (3) is fixedly connected with the top assembly head (5) in a clamping mode through an elastic locking mechanism.
2. The spring pin with the quick release mechanism as claimed in claim 1, wherein: the lateral limiting blind hole (8) is symmetrically formed in the inner side face of the external assembly blind hole (6), the elastic locking mechanism comprises an internal telescopic block (9) which is inserted into the external assembly blind hole (6), a lateral overturning limiting rod (10) which is movably assembled on the outer side face of the internal telescopic block (9) and an internal extrusion elastic sheet (11) of the elasticity on the inner side face of the lateral overturning limiting rod (10), and the outer side face of the internal telescopic block (9) is located at the connecting end of the lateral overturning limiting rod (10) and is provided with a longitudinal assembly groove (12).
3. The spring pin with the quick release mechanism as claimed in claim 1, wherein: and an external mounting groove with a built-in assembling rotating shaft (13) is formed in the center of the outer side end of the internal telescopic block (9).
4. A spring pin with a quick release mechanism as claimed in claim 3, wherein: the outer side surface of the outer blocking head (1) is provided with a lateral adjusting hole communicated with the inside of the inner tightening cavity (7), the outer side adjusting releasing device comprises a transverse releasing shaft (14) inserted into the inner tightening cavity (7), lateral limiting discs (155) fixed on two sides of the transverse releasing shaft (14) and an outer linkage pull rope (15) wound on the outer side of the transverse releasing shaft (14), and the top end of the outer side of the outer linkage pull rope (15) penetrates through the inside of the extrusion spring (2) to be bound with the assembly rotating shaft (13).
5. The spring pin with the quick release mechanism as claimed in claim 1, wherein: lateral limiting clamping grooves (16) are symmetrically formed in the inner side face of the inner assembly blind hole (4).
6. The spring pin with the quick release mechanism as claimed in claim 4, wherein: the top end of the transverse releasing shaft (14) positioned at the outer side of the lateral adjusting hole is provided with a lateral control groove (17).
7. The spring pin with the quick release mechanism as claimed in claim 1, wherein: the inner assembly blind hole (4) inner side is located inside and tightens up chamber (7) link and offers inside fixed slot (18) that is used for fixed extrusion spring (2), top assembly head (5) lateral surface be located extrusion spring (2) link and offer outside fixed slot (19) that are used for fixed extrusion spring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290120.XA CN113062908A (en) | 2021-03-18 | 2021-03-18 | Spring pin with quick-release mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110290120.XA CN113062908A (en) | 2021-03-18 | 2021-03-18 | Spring pin with quick-release mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113062908A true CN113062908A (en) | 2021-07-02 |
Family
ID=76561609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110290120.XA Withdrawn CN113062908A (en) | 2021-03-18 | 2021-03-18 | Spring pin with quick-release mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113062908A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7507110B1 (en) * | 2008-03-25 | 2009-03-24 | Cheng Uei Precision Industry Co., Ltd. | Probe connector |
| CN106558784A (en) * | 2015-09-30 | 2017-04-05 | 苹果公司 | Magnetic surface contact |
| CN107649813A (en) * | 2017-10-31 | 2018-02-02 | 天津市君治旺科技发展有限公司 | A kind of spring catch stopping means |
| CN208546390U (en) * | 2018-04-03 | 2019-02-26 | 佛山市汉云天家居有限公司 | A kind of assembled device for assembled family product |
| CN208982432U (en) * | 2018-10-10 | 2019-06-14 | 浙江瑞强汽车部件有限公司 | A kind of high strength elastic pin easy to disassemble |
| CN212155392U (en) * | 2020-04-23 | 2020-12-15 | 扬州久久塑业有限公司 | Elastic bolt part |
-
2021
- 2021-03-18 CN CN202110290120.XA patent/CN113062908A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7507110B1 (en) * | 2008-03-25 | 2009-03-24 | Cheng Uei Precision Industry Co., Ltd. | Probe connector |
| CN106558784A (en) * | 2015-09-30 | 2017-04-05 | 苹果公司 | Magnetic surface contact |
| CN107649813A (en) * | 2017-10-31 | 2018-02-02 | 天津市君治旺科技发展有限公司 | A kind of spring catch stopping means |
| CN208546390U (en) * | 2018-04-03 | 2019-02-26 | 佛山市汉云天家居有限公司 | A kind of assembled device for assembled family product |
| CN208982432U (en) * | 2018-10-10 | 2019-06-14 | 浙江瑞强汽车部件有限公司 | A kind of high strength elastic pin easy to disassemble |
| CN212155392U (en) * | 2020-04-23 | 2020-12-15 | 扬州久久塑业有限公司 | Elastic bolt part |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CZ333795A3 (en) | Device for connecting structural elements | |
| JPS63308206A (en) | Connector for frame structure assembly bars | |
| NO177402B (en) | Connecting device for releasably attaching a tubular rod to a column | |
| CN206789983U (en) | A kind of expander applied to R type locking pins | |
| CN113062908A (en) | Spring pin with quick-release mechanism | |
| CN220167183U (en) | Large-span steel truss connection structure | |
| CN219732740U (en) | Scaffold fixing mechanism for construction | |
| CN219764438U (en) | Tennis column | |
| EP3176446B1 (en) | System and method for assembling elements together using threaded male and female elements | |
| CN105415280B (en) | Potent dismounting and assembling tool for screw | |
| CN112160475B (en) | Curtain wall closed cavity keel system and construction method thereof | |
| CN208221278U (en) | Setscrew | |
| CN215548246U (en) | Auxiliary tool for assembling automobile screw | |
| CN2809311Y (en) | Expansion bolt | |
| CN208381078U (en) | A kind of standard connector of detachable door and window outline border and auxiliary frame | |
| TWI789302B (en) | Formwork support structure | |
| CN218668182U (en) | Crossbeam pushes up structure to one side | |
| CN113235779A (en) | Stainless steel spring pin for curtain wall | |
| CN213360709U (en) | Brace quick positioning structure | |
| CN112576277A (en) | Spatial combined supporting structure for shallow-buried bias section of opening and construction method | |
| CN217372166U (en) | Auxiliary tool for installing expansion bolt suite | |
| CN211709195U (en) | Special assembly and disassembly tools of handle positioning mechanism | |
| CN219755059U (en) | Press riveting stud | |
| CN220336774U (en) | Fixing structure for explosion venting window | |
| CN220204333U (en) | Bolt convenient to rotate |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210702 |
|
| WW01 | Invention patent application withdrawn after publication |