CN109099047A - Never becoming loose nut and installation method - Google Patents
Never becoming loose nut and installation method Download PDFInfo
- Publication number
- CN109099047A CN109099047A CN201811113321.7A CN201811113321A CN109099047A CN 109099047 A CN109099047 A CN 109099047A CN 201811113321 A CN201811113321 A CN 201811113321A CN 109099047 A CN109099047 A CN 109099047A
- Authority
- CN
- China
- Prior art keywords
- nut
- matrix
- hole
- accepting hole
- sub
- 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
- 238000009434 installation Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- 239000011159 matrix material Substances 0.000 claims abstract description 62
- 210000003205 muscle Anatomy 0.000 claims description 15
- 239000011148 porous material Substances 0.000 claims description 2
- 230000008774 maternal effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 206010058109 Hangnail Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000009987 spinning 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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/282—Locking by means of special shape of work-engaging surfaces, e.g. notched or toothed nuts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
Never becoming loose nut of the present invention includes nut body and the sub- nut that is arranged in nut body, the nut body includes the first matrix, it is provided with first accepting hole and the second accepting hole at the middle part of first matrix, first accepting hole and the second accepting hole connection, the angle of the first accepting hole hole wall and vertical direction is 3 ° -5 °, limit chuck is formed between first accepting hole bottom end and the second accepting hole top, the sub- nut includes the second matrix, the detent for being provided with the threaded hole in the middle part of the second matrix and being arranged on the second matrix lateral margin, second matrix is reverse taper, the gradient of second matrix side is 3 ° -5 °, second matrix is attached in first accepting hole and the second accepting hole, chuck is limited described in the detent clamping；Never becoming loose nut of the present invention has the advantages that center type is held tightly, more fastens compared to hinge type is biased to；One nut completes fastening；Production cost is low.
Description
Technical field
The present invention relates to assembly fastening fields, more particularly to a kind of never becoming loose nut and installation method.
Background technique
Nut is a kind of common fastening spare and accessory parts, is widely used in various mechanically and electrically equipment.Common application equipment
There is no particularly severe requirement to the locking characteristic of nut, but the fields such as automobile, high-speed rail, aerospace and nuclear power are come
It says, many equipment or component are chronically under vibration environment and work, and generation is easy between bolts and nuts and is loosened, to make to set
Standby normal work is affected, or even will cause safety accident.
In order to solve the problems, such as nut loosening, there are various self-locking nuts, its structure is complicated, production cost
Height, and inconvenience is installed, anti-loosing effect is undesirable.Most commonly used at present is the never becoming loose nut of Japan's production, mainly
Using double nut form, setting eccentric cam is raised on first nut, and second nut setting groove and inclined-plane squeeze first
The cam lobe of a nut, when the continuous spinning of second nut, the cam lobe of first nut will be along second
The inclined-plane of nut is toward moving on least radius, and reaching first nut will not loosen, however, being first nut or second
A nut is the effect by eccentric force always.In addition, all kinds of not loose nuts of many producer's designs, are all to increase
Frictional force or increase hangnail between nut and fastening workpiece etc. are come the purpose for the never becoming loose reached, but effect is not enough managed
Think.
Summary of the invention
It is a primary object of the present invention to overcome the disadvantage mentioned above of the prior art and deficiency, a kind of never becoming loose nut is provided
And installation method.
A kind of never becoming loose nut, for the fastening of screw rod and workpiece, including nut body and setting are in nut body
Sub- nut, the nut body include the first matrix, the first accepting hole and the second accepting hole, first accepting hole and second
Accepting hole is provided with the middle part of first matrix, first accepting hole and the second accepting hole connection, first accepting hole
For reverse taper, the angle of the first accepting hole hole wall and vertical direction is 3 ° -5 °, first accepting hole bottom end and second
Limit chuck is formed between accepting hole top, the sub- nut includes the second matrix, the threaded hole that is provided in the middle part of the second matrix
With the detent being arranged on the second matrix lateral margin, second matrix is reverse taper, and the gradient of second matrix side is
3 ° -5 °, second matrix is attached in first accepting hole and the second accepting hole, limiting card described in the detent clamping
Platform.
If several grooves are offered on second matrix in one of the embodiments, to be divided into the second matrix top
Clamping muscle is done, several limiting sections are provided on the first accepting hole hole wall, the limiting section receiving is in the groove.
The height of the groove slot bottom is lower than the height of the detent in one of the embodiments,.
The quantity of the groove is six or eight in one of the embodiments, and the quantity of the clamping muscle is six
Or eight.
Height of the height of second matrix less than the first matrix in one of the embodiments,.
The angle of the first accepting hole hole wall and vertical direction is 5 ° in one of the embodiments, second base
The gradient of body side surface is 5 °.
Second matrix offers through-hole, the through-hole and screw thread below threaded hole in one of the embodiments,
Hole connection, the aperture of the through-hole are greater than the aperture of threaded hole.
The aperture of second accepting hole is greater than the average pore size of the first accepting hole in one of the embodiments,.
A kind of installation method of never becoming loose nut, comprising the following steps:
1) by the tightening of the clamping muscle of the second matrix so that sub- nut is inserted into the first accepting hole and the of nut body
In two accepting holes, chuck is limited described in detent clamping；
2) screw rod is screwed in the threaded hole of sub- nut；
3) screw rod is screwed in workpiece；
4) rotating nuts ontology makes nut body support workpiece, then proceedes to rotating nuts ontology, sub- nut relative to
Nut body is mobile in vertical direction, so that sub- nut and nut body locking, nut body and workpiece locking, sub- nut and spiral shell
Rod locking.
Never becoming loose nut of the present invention includes nut body and the sub- nut that is arranged in nut body, the nut body
Including the first matrix, the first accepting hole and the second accepting hole, first accepting hole and the second accepting hole are provided with described first
The middle part of matrix, first accepting hole and the second accepting hole connection, first accepting hole are reverse taper, and described first receives
The angle for holding hole hole wall and vertical direction is 3 ° -5 °, and limit is formed between first accepting hole bottom end and the second accepting hole top
Position chuck, the sub- nut include the second matrix, the threaded hole being provided in the middle part of the second matrix and are arranged in the second matrix lateral margin
On detent, second matrix is reverse taper, and the gradient of second matrix side is 3 ° -5 °, the second matrix dress
It is set in first accepting hole and the second accepting hole, limits chuck described in the detent clamping；Never becoming loose nut of the present invention
It has the advantages that 1. center types are held tightly, is more fastened compared to hinge type is biased to；2. a nut completes fastening；3. raw
It produces at low cost.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of never becoming loose nut of the present invention；
Fig. 2 is the cross-sectional view of never becoming loose nut of the present invention；
Fig. 3 is the cross-sectional view of nut body in Fig. 2 never becoming loose nut of the present invention；
Fig. 4 is the cross-sectional view of Fig. 2 never becoming loose nut neutron nut of the present invention；
Fig. 5 is the cross-sectional view of another angle of never becoming loose nut of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element may be simultaneously present centering elements.Term as used herein "vertical", "horizontal", "left" and "right"
And similar statement is for illustrative purposes only, is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that the limitation present invention.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
It please refers to Fig.1 to Fig.3, a kind of never becoming loose nut 100 provided by the invention, for screw rod 200 and workpiece 300
Fastening, including nut body 1 and the sub- nut 2 being arranged in nut body 1, screw rod 200 is screwed in sub- nut 2 and workpiece 300,
Never becoming loose nut 100 and workpiece 300 are locked.Screw rod 200 is not limited to screw rod, also includes bolt or other threaded bars
Shape object.
Referring to Fig. 3, the nut body 1 includes the first matrix 11, the first accepting hole 12 and the second accepting hole 13, it is described
First accepting hole 12 and the second accepting hole 13 are provided with the middle part of first matrix 11, and first accepting hole 12 and second is received
Hold 13 connection of hole, first accepting hole 12 is reverse taper, and second accepting hole 13 is circular hole, first accepting hole 12
The angle of hole wall and vertical direction is 3 ° -5 °, and the aperture of second accepting hole 13 is greater than the minimum-value aperture of the first accepting hole 12,
That is the aperture of 12 least significant end of the first accepting hole, so that being formed between 13 top of 12 bottom end of the first accepting hole and the second accepting hole
To limit chuck 14.
Wherein, the side of first matrix 11 is five jiaos or hex bolts face, belongs to conventional design, repeats no more.
Several limiting sections 121 are provided on first accepting hole, 12 hole wall, the limiting section 121 can be with siding stopping nut
2 relative to the rotation between nut body 1.
Fig. 1, Fig. 4 and Fig. 5 are please referred to, the sub- nut 2 includes the second matrix 21, the spiral shell for being provided with 21 middle part of the second matrix
Pit 22 and the detent 23 being arranged on 21 lateral margin of the second matrix, second matrix 21 are reverse taper, second matrix
The gradient of 21 sides is 3 ° -5 °, is divided into 21 top of the second matrix if offering several grooves 24 on second matrix 21
Dry clamping muscle 25, the bore of the detent 23 are greater than the minimum-value aperture of the first accepting hole 12, and the height of 24 slot bottom of groove is low
In the height of the detent 23.
Wherein, the bulge size range of the detent 23 is in 0.2-0.4mm.
Fig. 2 is please referred to, the sub- nut 2 is attached in the nut body 1, and second matrix 21 is attached to described
In one accepting hole 12 and the second accepting hole 13, chuck 14 is limited described in 23 clamping of detent, the limiting section 121 is housed in institute
It states in groove 24.
Wherein, the quantity of the groove 24 is three, four, five, six or eight, and the quantity of the clamping muscle 25 is
Three, four, five, six or eight.The quantity for being certainly not limited to groove 24 and clamping muscle 25 is not limited to above-mentioned number, can be with
According to installation workpiece, different needs are changed.
Wherein, since the bore of detent 23 is greater than the minimum-value aperture of the first accepting hole 12, in order to enable sub- nut 2 can fill
It is set in nut body 1, groove 24 is set by the second matrix 21 and is divided into several clamping muscle 25, and the height of 24 slot bottom of groove
Lower than the height of the detent 23, groove 24 simultaneously divides detent 23, during installation, since clamping muscle 25 has certain bullet
Property shrink so that detent 23 also simultaneously to center tighten.Further, since the segmentation of groove 24 so that clamping muscle 25 relative to screw rod
200 frictional force increases, and increases the binding force of screw rod 200 Yu sub- nut 2.
Limitation nut body 1 and 2 relative movement distance of sub- nut, the height of second matrix 21 when wherein, to install
Less than the height of the first matrix 11.
Wherein, the angle of 12 hole wall of the first accepting hole and vertical direction is 5 °, 21 side of the second matrix it is oblique
Degree is 5 °.5 ° of angles of wedge are optimal direction of rotation self-locking angles, during installation, sub- nut 2 and nut body 1 can be made to carry out
It is self-locking.
Wherein, second matrix 21 offers through-hole 26 below threaded hole 22, and the through-hole 26 connects with threaded hole 22
Logical, the aperture of the through-hole 26 is greater than the aperture of threaded hole 22.The through-hole 26 is threaded hole 22 and workpiece screw thread in order to prevent
It grinds one's teeth between hole.
It between nut body 1 and sub- nut 2 of the present invention is cooperated with 5 ° of angles of wedge, 5 ° of angle itself is that have direction of rotation certainly
Lock function, while groove 24 and clamping muscle 25 are set on sub- nut 2 in order to increase self-lock force.
A kind of installation method of never becoming loose nut, comprising the following steps:
1) by the tightening of clamping muscle 25 of the second matrix 21 so that sub- nut 2 is inserted into the first receiving of nut body 1
In hole 12 and the second accepting hole 13, chuck 14 is limited described in 23 clamping of detent；
2) screw rod 200 is screwed in the threaded hole 22 of sub- nut 2；
3) screw rod 200 is screwed in the threaded hole (not shown) of workpiece 300；
4) rotating nuts ontology 1 makes nut body 1 support workpiece 300, then proceedes to rotating nuts ontology 1, sub- nut 2
Mobile in vertical direction relative to nut body 1, sub- nut 2 holds screw rod 200 tightly so that sub- nut and 2 nut bodies 1 lock,
Nut body 1 and the locking of workpiece 300, sub- nut 2 and screw rod 200 are locked.
Wherein, when workpiece 300 has not been entered into tightening state, nut body 1 is stirred by clamping muscle 25 and 5 ° of angles of wedge
Sub- nut 2 advances along 200 workpiece of screw rod, 300 direction；When between nut body 1 and workpiece 300 not movably apart from when, into tight
Gu the period, nut body 1 is motionless or slightly little by little mobile in screw rod 200 at this time, and sub- nut 2 at this time is along this spiral shell
Bar 200 is mobile to the direction of workpiece 300, screw rod 200 is held tightly along 5 ° of angles of wedge again while sub- nut 2 is mobile, until nut sheet
Body 1 reaches fastening effect when revolving motionless.
The center line of never becoming loose nut neutron nut and nut body of the present invention is overlapped, and is belonged to center type in assembly and is embraced
Tightly, so that the contact surface or joint surface of sub- nut and nut body increase, while the contact surface of sub- nut and screw rod is maximum, entirely
The binding force of assembly enhances；Furthermore it only needs to carry out tapping to sub- nut, relative to the locking mode of two nuts, production cost
It is lower.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not present
Contradiction all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of never becoming loose nut, the fastening for screw rod and workpiece, it is characterised in that: including nut body and be arranged in spiral shell
Maternal intracorporal sub- nut, the nut body include the first matrix, the first accepting hole and the second accepting hole, first receiving
Hole and the second accepting hole are provided with the middle part of first matrix, first accepting hole and the second accepting hole connection, and described
One accepting hole is reverse taper, and the angle of the first accepting hole hole wall and vertical direction is 3 ° -5 °, first accepting hole bottom
Limit chuck is formed between end and the second accepting hole top, the sub- nut includes the second matrix, is provided in the middle part of the second matrix
Threaded hole and the detent that is arranged on the second matrix lateral margin, second matrix be reverse taper, second matrix side
Gradient be 3 ° -5 °, second matrix is attached in first accepting hole and the second accepting hole, described in the detent clamping
Limit chuck.
2. never becoming loose nut according to claim 1, it is characterised in that: offering several grooves on second matrix will
Second matrix top is divided into several clamping muscle, and several limiting sections, the limiting section are provided on the first accepting hole hole wall
Receiving is in the groove.
3. never becoming loose nut according to claim 2, it is characterised in that: the height of the groove slot bottom is lower than the detent
Height.
4. never becoming loose nut according to claim 2, it is characterised in that: the quantity of the groove is six or eight, institute
The quantity for stating clamping muscle is six or eight.
5. never becoming loose nut according to claim 1, it is characterised in that: the height of second matrix is less than the first matrix
Height.
6. never becoming loose nut according to claim 1, it is characterised in that: the first accepting hole hole wall and vertical direction
Angle is 5 °, and the gradient of second matrix side is 5 °.
7. never becoming loose nut according to claim 1, it is characterised in that: second matrix offers below threaded hole
Through-hole, the through-hole are connected to threaded hole, and the aperture of the through-hole is greater than the aperture of threaded hole.
8. never becoming loose nut according to claim 1, it is characterised in that: the aperture of second accepting hole is greater than first and receives
Hold the average pore size in hole.
9. a kind of installation method of never becoming loose nut, it is characterised in that: the following steps are included:
1) by the clamping muscle tightening of the second matrix so that sub- nut is inserted into the first accepting hole and the second receipts of nut body
Hold in hole, limits chuck described in detent clamping；
2) screw rod is screwed in the threaded hole of sub- nut；
3) screw rod is screwed in workpiece；
4) rotating nuts ontology makes nut body support workpiece, then proceedes to rotating nuts ontology, sub- nut is relative to nut
Ontology is mobile in vertical direction, so that sub- nut and nut body locking, nut body and workpiece locking, sub- nut and screw rod are locked
Tightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113321.7A CN109099047A (en) | 2018-09-25 | 2018-09-25 | Never becoming loose nut and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113321.7A CN109099047A (en) | 2018-09-25 | 2018-09-25 | Never becoming loose nut and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109099047A true CN109099047A (en) | 2018-12-28 |
Family
ID=64867366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113321.7A Pending CN109099047A (en) | 2018-09-25 | 2018-09-25 | Never becoming loose nut and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109099047A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513527A (en) * | 2020-04-10 | 2021-10-19 | 江苏力达实业科技有限公司 | Self-locking type assembling, locking and fixing connecting piece |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE375605A (en) * | ||||
| AT300472B (en) * | 1969-12-11 | 1972-07-25 | Eugen Buechel | Locking screw with polygon head |
| CN1043546A (en) * | 1990-01-25 | 1990-07-04 | 陆正家 | The locking device that the screw threads for fastening of fast demountable connects |
| DE4037255A1 (en) * | 1990-11-23 | 1992-05-27 | Bayerische Motoren Werke Ag | Holder for spare wheel in motor vehicle - uses clamp element with fixing tongues and fastening bolt |
| CN2530088Y (en) * | 2002-04-02 | 2003-01-08 | 郑州铁路新科机车车辆配件有限公司 | Cushion height continuous regulatable backer |
| WO2010123742A1 (en) * | 2009-04-22 | 2010-10-28 | As Ip Holdco, Llc | Push and turn nut for quick faucet installation |
| CN104132052A (en) * | 2013-04-30 | 2014-11-05 | Rbw制造有限责任公司 | Nut and sleeve fastener |
| CN104246244A (en) * | 2012-03-14 | 2014-12-24 | 联合工业有限公司 | Fastener and fastener assembly having improved vibrational and tightening characteristics |
| CN106337867A (en) * | 2016-10-17 | 2017-01-18 | 广西师范大学 | Conical threaded connecting mechanism |
| CN107740807A (en) * | 2017-11-29 | 2018-02-27 | 忻建国 | A kind of combination stop nut locked using tapered thread |
| CN108361267A (en) * | 2018-05-04 | 2018-08-03 | 宁波洋丹尔母婴用品有限公司 | A kind of included clamping head stop nut |
-
2018
- 2018-09-25 CN CN201811113321.7A patent/CN109099047A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE375605A (en) * | ||||
| AT300472B (en) * | 1969-12-11 | 1972-07-25 | Eugen Buechel | Locking screw with polygon head |
| CN1043546A (en) * | 1990-01-25 | 1990-07-04 | 陆正家 | The locking device that the screw threads for fastening of fast demountable connects |
| DE4037255A1 (en) * | 1990-11-23 | 1992-05-27 | Bayerische Motoren Werke Ag | Holder for spare wheel in motor vehicle - uses clamp element with fixing tongues and fastening bolt |
| CN2530088Y (en) * | 2002-04-02 | 2003-01-08 | 郑州铁路新科机车车辆配件有限公司 | Cushion height continuous regulatable backer |
| WO2010123742A1 (en) * | 2009-04-22 | 2010-10-28 | As Ip Holdco, Llc | Push and turn nut for quick faucet installation |
| CN104246244A (en) * | 2012-03-14 | 2014-12-24 | 联合工业有限公司 | Fastener and fastener assembly having improved vibrational and tightening characteristics |
| CN104132052A (en) * | 2013-04-30 | 2014-11-05 | Rbw制造有限责任公司 | Nut and sleeve fastener |
| CN106337867A (en) * | 2016-10-17 | 2017-01-18 | 广西师范大学 | Conical threaded connecting mechanism |
| CN107740807A (en) * | 2017-11-29 | 2018-02-27 | 忻建国 | A kind of combination stop nut locked using tapered thread |
| CN108361267A (en) * | 2018-05-04 | 2018-08-03 | 宁波洋丹尔母婴用品有限公司 | A kind of included clamping head stop nut |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513527A (en) * | 2020-04-10 | 2021-10-19 | 江苏力达实业科技有限公司 | Self-locking type assembling, locking and fixing connecting piece |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181228 |