CN107725565A - A kind of automatic locking nut - Google Patents
A kind of automatic locking nut Download PDFInfo
- Publication number
- CN107725565A CN107725565A CN201710966686.3A CN201710966686A CN107725565A CN 107725565 A CN107725565 A CN 107725565A CN 201710966686 A CN201710966686 A CN 201710966686A CN 107725565 A CN107725565 A CN 107725565A
- Authority
- CN
- China
- Prior art keywords
- nut
- spring
- component
- boss
- automatic locking
- 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.)
- Pending
Links
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
-
- 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
- F16B37/00—Nuts or like thread-engaging members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses a kind of automatic locking nut, and it solves the problems, such as that stop nut can not eliminate gap between nut and clamping element in the prior art, and workpiece, effect convenient for production, cost is low can be clamped again by having；Its technical scheme is：Including fixing nut component, traveling nut component and spring, the side of the traveling nut component is contacted with clamping element, and its opposite side is connected by spring with fixing nut component；The traveling nut component, spring and fixing nut component are sequentially arranged on bolt；When gap occur in traveling nut component and clamping element, traveling nut component is automatically rotated to the gap between clamping element along locking direction with respect to bolt and eliminated.
Description
Technical field
The present invention relates to component of machine field, more particularly to a kind of automatic locking nut.
Background technology
Stop nut is a kind of common fastening locknut, be widely used in bicycle, roller-skating ski equipment, furniture,
Multiple industries such as sports equipment, medicine equipment.Existing stop nut limits the relative fortune of nut and bolt by special construction
It is dynamic, prevent nut relative to bolt rotation, the purpose released to reach.
Yet with reasons such as external force, when causing to occur between nut and clamping element gap, existing stop nut can not
Rotated automatically along locking direction relative to bolt, it is impossible to the gap between nut and clamping element is cancelled, and then can not be realized again
Clamp workpiece.
In summary, in the prior art for how to realize nut auto lock the problem of, still lack effective solution party
Case.
The content of the invention
For overcome the deficiencies in the prior art, the invention provides a kind of automatic locking nut, and it has in nut and folder
When there is gap between tight part, nut can rotate automatically relative to bolt along locking direction, between nut and clamping element
Gap eliminates, and then clamps the effect of workpiece again.
The present invention uses following technical proposals：
It is described the invention provides a kind of automatic locking nut, including fixing nut component, traveling nut component and spring
The side of traveling nut component is contacted with clamping element, and its opposite side is connected by spring with fixing nut component；The movable screw
Female component, spring and fixing nut component are sequentially arranged on bolt；When there is gap in traveling nut component and clamping element, activity
Nut assembly is automatically rotated to the gap between clamping element along locking direction with respect to bolt and eliminated.
Further, the fixing nut component includes the first nut assembly and the second nut assembly, first nut
Component includes first flange and the first nut to link together；Second nut assembly includes the second nut, second flange
With the first spring groove, the second flange is connected between the first spring groove and the second nut.
Further, the side of second nut is provided with first boss, on first spring groove with the second nut phase
Back of the body side is provided with second boss, and the first boss the second nut central shaft relative with second boss differs 180 °.
Further, second flange side opposite with the second nut is provided with the first spring boss.
Further, the traveling nut component includes the 3rd flange, the 3rd nut and second spring groove, the 3rd method
Blue and second spring groove is connected to the both ends of the 3rd nut；3rd flange contacts with clamping element.
Further, side opposite with the 3rd flange is provided with second spring boss on the 3rd nut.
Further, the upper surface of one end of the spring and second spring boss, the other end of the spring with
The upper surface of first spring boss.
Further, the spring is helical spring or spring washer, can be that the auto lock of traveling nut component is transported
It is dynamic that power is provided.
Present invention also offers a kind of automatic locking nut, including fixing nut component, traveling nut component and spring, institute
The side for stating traveling nut component is contacted with clamping element, and its opposite side is connected by spring with fixing nut component；The activity
Nut assembly, spring and fixing nut component are sequentially arranged on bolt.
The fixing nut component includes the first nut and the second nut assembly, and second nut assembly includes the second spiral shell
Female and sleeve, the external circumferential of the sleeve are provided with external screw thread, and the sleeve is internally threaded hole, the sleeve screw-in the
Two nut interiors.
Further, the side of second nut is provided with the first spring boss；Described first nut interior one end is provided with
The first internal thread being engaged with the external screw thread, its other end are provided with the second internal thread being engaged with bolt thread.
Further, the pitch of second internal thread is less than the pitch of the first internal thread.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention includes three fixing nut component, traveling nut component and spring parts, in traveling nut with clamping
When occurring gap between part, due to the effect of spring, traveling nut can rotate automatically relative to bolt along locking direction, by nut
Gap between clamping element eliminates, and realizes that workpiece clamps again；
(2) present invention is equipped with spring boss on traveling nut component and fixing nut component, and spring boss is to spring
Restriction effect is played, prevents spring pivotal, spring is provided the power of auto lock motion for traveling nut component；
(3) fixing nut component of the invention makes fixing nut group by the cooperation between the first nut and the second nut
Realize locking in some position that part can be fixed on bolt；
(4) present invention there is automatic fastening function, while be simple to manufacture, production cost it is low.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the first nut assembly structural representation of the present invention；
Fig. 3 is the first nut assembly structural representation of the present invention；
Fig. 4 is the traveling nut component structure diagram of the present invention；
Fig. 5 is the spring schematic diagram of the present invention；
Fig. 6 is the first nut assembly structural representation in embodiments of the invention 2；
Fig. 7 is the second nut assembly structural representation in embodiments of the invention 2；
Fig. 8 is fixing nut structural representation in embodiments of the invention 3；
Wherein, the nut assemblies of 1- second, 2- traveling nut components, 3- springs, the nut assemblies of 4- first, 5- clamping elements, 6-
Bolt, 7- second boss, 8- first boss, 9- first flanges, 10- screwed holes, 11- the first spring boss, 12- second flanges,
The screwed holes of 13- second, the spring grooves of 14- first, the flanges of 15- the 3rd, 16- second spring grooves, 17- second spring boss, 18- screw threads
Hole, the nuts of 19- first, the internal threads of 20- second, the internal threads of 21- first, 22- flanks, the nuts of 23- second, the springs of 24- first
Groove, 25- the first spring boss, 26- screwed holes, 27- open slots, 28- screwed holes, 29- bearing pins, the nuts of 30- first, 31- second
Nut, the nuts of 32- the 3rd.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, exist in the prior art between stop nut can not be eliminated between nut and clamping element
The deficiency of gap, in order to solve technical problem as above, present applicant proposes a kind of automatic locking nut.
Embodiment 1：
This application provides a kind of automatic locking nut, as Figure 1-Figure 5, including fixing nut component, traveling nut
Component 2 and spring 3, the traveling nut component 2, spring 3 and fixing nut component are sequentially arranged on bolt 6, the bolt 6
External circumferential is provided with bolt thread；One end of the grip bolt 6 of clamping element 5, the traveling nut component 2 contact with clamping element 5.
As shown in Fig. 2 the fixing nut component includes the first nut assembly 4 and the second nut assembly 1, first spiral shell
Female component 4 includes the nut 30 of first flange 9 and first, and first nut 30 is internally threaded hole 10, first spiral shell
One end of mother 30 is connected with first flange 9.
As shown in figure 3, second nut assembly 1 includes the second nut 31, the spring groove 14 of second flange 12 and first, institute
The one end for stating second flange 12 is threadedly coupled with the first spring groove 14, the other end and the spiral shell of the second nut 31 of the second flange 12
Line connects；The side of second nut 12 is provided with first boss 8.
First spring groove 14 is socket type structure, is internally threaded hole；With second on first spring groove 14
12 opposite side of nut is provided with second boss 7, and the first boss 8 differs with second boss 7 with respect to the central shaft of the second nut 31
180°。
The second flange 12 and 31 opposite side of the second nut are provided with the first spring boss 11, the first spring boss 11 with
Second boss 7 is located at homonymy.
As shown in figure 4, the traveling nut component 2 includes the 3rd flange 15, the 3rd nut 32 and second spring groove 16, institute
Stating the 3rd flange 15 and second spring groove 16 can be structure as a whole, the second spring groove 16 be with the one of the 3rd flange 15 into
The socket type structure of type, the 3rd nut 32 are sheathed on the outer circumferential of second spring groove 16 and are threadedly coupled with it.
3rd flange 15 and second spring groove 16 can also be Split type structure, one end of the 3rd nut 32 and the
Three flanges 15 are threadedly coupled, and the other end of the 3rd nut 32 is threadedly coupled with second spring groove 16；The second spring groove
16 be cylindrical structure, is internally provided with screwed hole 18.
3rd nut 32 is provided with second spring boss 17 with 15 opposite side of the 3rd flange, and the one of the spring 3
The upper surface of end and the upper surface of second spring boss 17, the other end of the spring 3 and the first spring boss 11,
First spring boss 11 prevents spring 3 from rotating with second spring boss 17, and the spring 3 is the automatic lock of traveling nut component 2
Tight motion provides power.
The spring 3 is helical spring or spring washer, and its spiral internal diameter is slightly larger than the first spring groove 11 and second spring
The external diameter of groove 17.
After traveling nut component 2, the first nut assembly 4, the second nut assembly 1 are assembled with bolt 6, the first spring boss
Line and the axis of bolt 6 between 11 and second spring boss 17 are in certain angle.
Its operation principle is：
First, the side that traveling nut component 2 is screwed in the flange 15 of bolt 6 to the 3rd contacts with clamping element 5, now movable
Nut assembly 2 clamps clamping element 5.
Then, spring 3 is sheathed on the second spring groove 16 of traveling nut component 2, and one end of spring 3 and the second bullet
The lower surface contact of spring boss 17.
Afterwards, the second nut assembly 1 is screwed in into bolt 6, spring 3 is sheathed on the first spring groove 14, and spring 3 is another
The upper surface of one end and the first spring boss 11, now spring 3 there is torsional-energy.
Finally, the first nut assembly 4 is screwed on bolt 6, until the on side and the second nut 31 of first flange 9
One boss 8 contacts；The thread center of power of the first boss 8 with second boss 7 by direction, the second nut 31 and the first nut 30
Axis no longer overlaps with the axis of bolt 6.
Now the fixing nut component of the first nut 30 and the second nut 31 composition can not rotate around the axis of bolt 6；Gu
Determine nut assembly to be fixed on bolt 6.
If there is gap between the side of the 3rd flange 15 and the plane of clamping element 5, under the driving of the torsional-energy of spring 3,
Traveling nut component 2 can rotate automatically along locking direction, the side of the 3rd flange 15 is contacted again with the plane of clamping element 5, press from both sides
Tight part 5 is clamped again.
Embodiment 2：
A kind of automatic locking nut, including fixing nut component, traveling nut component and spring, the traveling nut component
Side contacted with clamping element, its opposite side is connected by spring with fixing nut component；The traveling nut component, spring and
Fixing nut component is sequentially arranged on bolt.
As shown in Figure 6 and Figure 7, the fixing nut component includes the first nut 19 and the second nut assembly, and described second
Nut assembly includes the second nut 23 and sleeve, and the external circumferential of the sleeve includes flank 22 and non-threaded face, the set
Cylinder is internally threaded hole 26, and the sleeve is screwed in inside the second nut 23 by flank 22, and non-threaded face side is formed
First spring groove 24.
The side of second nut 23 is provided with the first spring boss 25；Described inside one end of first nut 19 is provided with and institute
The first internal thread 21 that flank 22 is engaged is stated, its other end is provided with the second internal thread 20 being engaged with bolt thread.
Second internal thread 20, the pitch of sleeve inner screwed hole 26 are less than the pitch of the first internal thread 21.
Other structures are same as Example 1, and here is omitted.
Its operation principle is：
First nut 19 is connected as one with the second nut 23 by the first internal thread 21 and the flank 22 on the outside of sleeve,
Fixing nut component is tightened against some position of bolt by screwed hole 26, the bolt thread of the second internal thread 20, sleeve inner
Put.
Now, fix the second nut 23, rotate the first nut 19, due to the second internal thread 20, sleeve inner screwed hole 26,
The pitch of bolt thread is less than the first internal thread 21, the pitch in sleeve outside screw face 22, and fixing nut component is fixed on into spiral shell
This position of bolt.
Embodiment 3：
A kind of automatic locking nut, including fixing nut component, traveling nut component and spring, the traveling nut component
Side contacted with clamping element, its opposite side is connected by spring with fixing nut component；The traveling nut component, spring and
Fixing nut component is sequentially arranged on bolt.
As shown in figure 8, the fixing nut component includes fixing nut and bearing pin 29, the fixing nut is axially arranged with
Screwed hole 28, the side both ends of fixing nut are provided with open slot 27, and the open slot 27 is used to insert bearing pin 29.
The screwed hole 28 is identical with the pitch of bolt thread, and both cooperate.
Other structures are same as Example 1, and here is omitted.
Its operation principle is：
Fixing nut component is located at some position of bolt by screwed hole 28, bolt thread, and now bearing pin 29 inserts in
In open slot 27, while bearing pin 29 passes through bolt, and fixing nut component is fixed on this position of bolt.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of automatic locking nut, it is characterised in that including fixing nut component, traveling nut component and spring, the work
The side of dynamic nut assembly is contacted with clamping element, and its opposite side is connected by spring with fixing nut component；The traveling nut
Component, spring and fixing nut component are sequentially arranged on bolt；When there is gap in traveling nut component and clamping element, movable screw
Female component is automatically rotated to the gap between clamping element along locking direction with respect to bolt and eliminated.
2. a kind of automatic locking nut according to claim 1, it is characterised in that the fixing nut component includes first
Nut assembly and the second nut assembly, first nut assembly include first flange and the first nut to link together；Institute
Stating the second nut assembly includes the second nut, second flange and the first spring groove, and the second flange is connected to the first spring groove
Between the second nut.
3. a kind of automatic locking nut according to claim 2, it is characterised in that the side of second nut is provided with the
One boss, side opposite with the second nut is provided with second boss, the first boss and second boss on first spring groove
180 ° are differed with respect to the second nut central shaft.
4. a kind of automatic locking nut according to claim 2, it is characterised in that the second flange and the second nut phase
Back of the body side is provided with the first spring boss.
5. a kind of automatic locking nut according to claim 1, it is characterised in that the traveling nut component includes the 3rd
Flange, the 3rd nut and second spring groove, the 3rd flange and second spring groove are connected to the both ends of the 3rd nut；Institute
The 3rd flange is stated to contact with clamping element.
A kind of 6. automatic locking nut according to claim 5, it is characterised in that on the 3rd nut with the 3rd flange
Opposite side is provided with second spring boss.
A kind of 7. automatic locking nut according to claim 4 or 6, it is characterised in that one end of the spring and second
The upper surface of the upper surface of spring boss, the other end of the spring and the first spring boss.
8. a kind of automatic locking nut according to claim 1, it is characterised in that the fixing nut component includes first
Nut and the second nut assembly, second nut assembly include the second nut and sleeve, and the external circumferential of the sleeve is provided with
External screw thread, the sleeve are internally threaded hole, and the sleeve screws in the second nut interior.
9. a kind of automatic locking nut according to claim 8, it is characterised in that the side of second nut is provided with the
One spring boss；Described first nut interior one end is provided with the first internal thread being engaged with the external screw thread, and its other end is set
There is the second internal thread being engaged with bolt thread.
10. a kind of automatic locking nut according to claim 9, it is characterised in that the pitch of second internal thread is small
In the pitch of the first internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966686.3A CN107725565A (en) | 2017-10-17 | 2017-10-17 | A kind of automatic locking nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710966686.3A CN107725565A (en) | 2017-10-17 | 2017-10-17 | A kind of automatic locking nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107725565A true CN107725565A (en) | 2018-02-23 |
Family
ID=61211627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710966686.3A Pending CN107725565A (en) | 2017-10-17 | 2017-10-17 | A kind of automatic locking nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725565A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930705A (en) * | 2018-08-27 | 2018-12-04 | 安徽西马新能源技术有限公司 | A kind of anticreep fastening automobile component |
| CN108953352A (en) * | 2018-09-30 | 2018-12-07 | 孙团结 | A kind of crawler belt stop nut |
| CN109185316A (en) * | 2018-11-23 | 2019-01-11 | 航天精工股份有限公司 | A kind of squash type slotted nut component |
| CN111188884A (en) * | 2020-02-17 | 2020-05-22 | 常州机电职业技术学院 | Anti-backlash mechanism suitable for double-nut ball screw pair and double-nut ball screw pair |
| CN113847330A (en) * | 2021-09-22 | 2021-12-28 | 嘉兴圣龙五金科技股份有限公司 | Self-supporting iron tower equipment is with preventing tearing open bolt |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191009514A (en) * | 1910-04-19 | 1910-09-29 | Charles L Dunham | New and Useful Improvements in Nut Locks. |
| CN2103041U (en) * | 1991-08-21 | 1992-04-29 | 蒋志忠 | Combined locknut |
| US5248232A (en) * | 1992-02-10 | 1993-09-28 | Chiang Chih Chung | Fixing means |
| CN1162073A (en) * | 1996-04-10 | 1997-10-15 | 严明 | Self-locking energy-storage device for bolt |
| JP2001003920A (en) * | 1999-06-17 | 2001-01-09 | Masao Sato | Projection double tightening nut |
| CN1839266A (en) * | 2003-08-22 | 2006-09-27 | 共创有限会社 | Lock nut |
| CN101476587A (en) * | 2009-01-22 | 2009-07-08 | 福州汇和现代科技有限公司 | Self-locking bolt |
-
2017
- 2017-10-17 CN CN201710966686.3A patent/CN107725565A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191009514A (en) * | 1910-04-19 | 1910-09-29 | Charles L Dunham | New and Useful Improvements in Nut Locks. |
| CN2103041U (en) * | 1991-08-21 | 1992-04-29 | 蒋志忠 | Combined locknut |
| US5248232A (en) * | 1992-02-10 | 1993-09-28 | Chiang Chih Chung | Fixing means |
| CN1162073A (en) * | 1996-04-10 | 1997-10-15 | 严明 | Self-locking energy-storage device for bolt |
| JP2001003920A (en) * | 1999-06-17 | 2001-01-09 | Masao Sato | Projection double tightening nut |
| CN1839266A (en) * | 2003-08-22 | 2006-09-27 | 共创有限会社 | Lock nut |
| CN101476587A (en) * | 2009-01-22 | 2009-07-08 | 福州汇和现代科技有限公司 | Self-locking bolt |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930705A (en) * | 2018-08-27 | 2018-12-04 | 安徽西马新能源技术有限公司 | A kind of anticreep fastening automobile component |
| CN108953352A (en) * | 2018-09-30 | 2018-12-07 | 孙团结 | A kind of crawler belt stop nut |
| CN109185316A (en) * | 2018-11-23 | 2019-01-11 | 航天精工股份有限公司 | A kind of squash type slotted nut component |
| CN109185316B (en) * | 2018-11-23 | 2020-08-04 | 航天精工股份有限公司 | Extrusion formula fluting lock nut subassembly |
| CN111188884A (en) * | 2020-02-17 | 2020-05-22 | 常州机电职业技术学院 | Anti-backlash mechanism suitable for double-nut ball screw pair and double-nut ball screw pair |
| CN111188884B (en) * | 2020-02-17 | 2021-05-18 | 常州机电职业技术学院 | Anti-backlash mechanism suitable for double-nut ball screw pair and double-nut ball screw pair |
| CN113847330A (en) * | 2021-09-22 | 2021-12-28 | 嘉兴圣龙五金科技股份有限公司 | Self-supporting iron tower equipment is with preventing tearing open bolt |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180223 |
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| RJ01 | Rejection of invention patent application after publication |